start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=69 end-page=80 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Basic Study on Nonlinear Sound Propagation by Finite Element Simulation en-subtitle= kn-subtitle= en-abstract= kn-abstract=A finite element approach to the calculation of nonlinear sound propagation is proposed. Under the assumption of a weak nonlinearity, a linearized one-dimensional equation is considered. The equation is discretized in space, and is then solved for time by using Newmark-ƒÀ integration scheme, in which a numerical damping is devised. Some numerical demonstrations are made for the nonlinear sound propagation of a single-shot pulse in air. It is shown that the shock wave propagation is stably and accurately simulated by the introduction of the numerical damping. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TsuchiyaTakao kn-aut-sei=Tsuchiya kn-aut-mei=Takao aut-affil-num=1 ORCID= en-aut-name=KagawaYukio en-aut-sei=Kagawa en-aut-mei=Yukio kn-aut-name=‰ÁìK—Y kn-aut-sei=‰Áì kn-aut-mei=K—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=2 article-no= start-page=77 end-page=92 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19920328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Beam Focusing Antenna for the TE(0)n Mode High-Power Millimeter Wave en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper describes a method to design an antenna to focus millimeter-wave beam generated by a gyrotron. The antenna, which has been proposed by the authors, consists of a stair-cut circular waveguide and two cylindrical reflectors; one is elliptic and the other is parabolic. Its principle is based on the geometrical optics though slightly modified to consider the diffraction effect. Results of low-power experiments agree well with the design on beam direction, beam width and the position of the focal point. At 35.5 GHz using TE(01) mode, a focused beam with half-power thickness of 13 mm x 10 mm was obtained. This type of antennas find applications to millimeter-wave scattering measurement in fusion plasma research and high- energy-density source for material heating. en-copyright= kn-copyright= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakajimaMasamitsu kn-aut-sei=Nakajima kn-aut-mei=Masamitsu aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electronics, Kyoto University END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=2 article-no= start-page=9 end-page=19 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19890330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Design Method for Pin Holding Type Jig en-subtitle= kn-subtitle= en-abstract= kn-abstract=Multi-item flexible manufacturing systems have been spread to correspond the short life-cycle and the diversification of products. Part handling plays an important role to operate multi-functional robot efficiently in these systems, and many jigs are widely used to hold a part. They should be exchanged at once according to changing products. In this paper, we propose a pin jig which holds a part with two pins, and design method of the position, length and diameter of those pins for a cylindrical part. This jig has the following characteristics. As a surface of the jig is inclined to use gravity, the part can be fixed without any external forces. Therefore the structure of jig becomes simple, and loading and unloading of a part becomes easy for a robot hand. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KurodaTsutomu kn-aut-sei=Kuroda kn-aut-mei=Tsutomu aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=MatsudaMasaaki en-aut-sei=Matsuda en-aut-mei=Masaaki kn-aut-name=¼“c³–¾ kn-aut-sei=¼“c kn-aut-mei=³–¾ aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujisawaKeita kn-aut-sei=Fujisawa kn-aut-mei=Keita aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Tosco Co. LTD. affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Mitsubishi Electric Co., LTD. END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=2 article-no= start-page=73 end-page=87 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200303 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Fast Implementation of Elliptic Curve Cryptosystem with Prime Order Defined over F(p8) en-subtitle= kn-subtitle= en-abstract= kn-abstract=Public key cryptosystem has many uses, such as to sign digitally, to realize electronic commerce. Especially, RSA public key cryptosystem has been the most widely used, but its key for ensuring sufficient security reaches about 2000 bits long. On the other hand, elliptic curve cryptosystem(ECC) has the same security level with about 7-fold smaller length key. Accordingly, ECC has been received much attention and implemented on various processors even with scarce computation resources. In this paper, we deal with an elliptic curve which is defined over extension field F(p2c) and has a prime order, where p is the characteristic and c is a non negative integer. In order to realize a fast software implementation of ECC adopting such an elliptic curve, a fast implementation method of definition field F(p2c) especially F(p8) is proposed by using a technique called successive extension. First, five fast implementation methods of base field F(p2) are introduced. In each base field implementation, calculation costs of F(p2)-arithmetic operations are evaluated by counting the numbers of F(p)-arithmetic operations. Next, a successive extension method which adopts a polynomial basis and a binomial as the modular polynomial is proposed with comparing to a conventional method. Finally, we choose two prime numbers as the characteristic, and consider several implementations for definition field F(p8) by using five base fields and two successive extension methods. Then, one of these implementations is especially selected and implemented on Toshiba 32-bit micro controller TMP94C251(20MHz) by using C language. By evaluating calculation times with comparing to previous works, we conclude that proposed method can achieve a fast implementation of ECC with a prime order. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Communication Network Engineering Okayama University affil-num=2 en-affil= kn-affil=Department of Communication Network Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=207 end-page=212 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Group Signature Scheme with Easy Membership Canceling en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the group signature scheme with a trusted party, a verifier can determine whether or not a signature is made by a member of the group, but cannot identify the member who signed the signature. In case of dispute later on, the signer can be identified by the trusted party. However, for efficient group signature schemes proposed so far, removing a member from the group can be not efficiently performed. In this paper, a group signature scheme with an easy membership canceling is proposed. By sending a request to use a resource together with the group signature on it to the manager of the resource, the manager can control anonymous accesses to the resource. In such an application, the proposed group signature scheme is suitable for canceling of the access privilege. en-copyright= kn-copyright= en-aut-name=NakanishiToru en-aut-sei=Nakanishi en-aut-mei=Toru kn-aut-name=’†¼“§ kn-aut-sei=’†¼ kn-aut-mei=“§ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiwaraToru kn-aut-sei=Fujiwara kn-aut-mei=Toru aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Communication Network Engineering affil-num=2 en-affil= kn-affil=Department of Informatics and Mathematical Science, Osaka University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=99 end-page=107 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A High-Speed Square Root Algorithm for Extension fields -Especially for Fast Extension Fields- en-subtitle= kn-subtitle= en-abstract= kn-abstract=A square root (SQRT) algorithm in extension field F(p(m))(m = r(0)r(1)¥¥¥r(n?1)¥2(d), r(i) : odd prime, d : positive integer) is proposed in this paper. First, a conventional SQRT algorithm, the Tonelli-Shanks algorithm, is modified to compute the inverse SQRT in F(p(2d)), where most of the computations are performed in the corresponding subfields F(p(2i)) for 0 ? i ? d-1. Then the Frobenius mappings with addition chain are adopted for the proposed SQRT algorithm, in which a lot of computations in a given extension field F(p(m)) are also reduced to those in a proper subfield by the norm computations. Those reductions of the field degree increase efficiency in the SQRT implementation. The Tonelli-Shanks algorithm and the proposed algorithm in F(p(6)) and F(p(10)) were implemented on a Core2 (2.66 GHz) using the C++ programming language. The computer simulations showed that, on average, the proposed algorithm accelerated the SQRT computation by 6 times in F(p(6)), and by 10 times in F(p(10)), compared to the Tonelli-Shanks algorithm. en-copyright= kn-copyright= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=82 end-page=92 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A High-Speed Square Root Computation in Finite Fields with Application to Elliptic Curve Cryptosystem en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we focus on developing a high-speed square root (SQRT) algorithm required for an elliptic curve cryptosystem. Examining Smart algorithm, the previously well-known SQRT algorithm, we can see that there is a lot of computation overlap in Smart algorithm and the quadratic residue (QR) test, which must be implemented prior to a SQRT computation. It makes Smart algorithm inefficient. The essence of our proposition is thus to present a new QR test and an efficient SQRT algorithm to avoid all the overlapping computations. The authors devised a SQRT algorithm for which most of the data required have been computed in the proposed QR test. Not only there is no computation overlap in the proposed algorithm and the proposed QR test, but also in the proposed algorithm over GF(p(2)) (4 | p ? 1) some computations can be executed in GF(p); whereas in Smart algorithm over GF(p(2)) all the computations must be executed in GF(p(2)). These yield many reductions in the computational time and complexity. We implemented the two QR tests and the two SQRT algorithms over GF(pm) (m=1, 2) in C++ language with NTL (Number Theory Library) on Pentium4 (2.6GHz), where the size of p is around 160 bits. The computer simulations showed that the proposed QR test and the proposed algorithm over GF(p(m)) were about 2 times faster than the conventional QR test and Smart algorithm over GF(p(m)). en-copyright= kn-copyright= en-aut-name=WangFeng en-aut-sei=Wang en-aut-mei=Feng kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Communication Network Engineering Okayama University affil-num=2 en-affil= kn-affil=Department of Communication Network Engineering Okayama University affil-num=3 en-affil= kn-affil=Department of Communication Network Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=9 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Logical Problem Decomposing Method for Decision Makers en-subtitle= kn-subtitle= en-abstract= kn-abstract=Decision Support Systems (DSS) have been taken as hopeful support tools for decision making for more than 20 years. There are a lot of literatures on DSS, but most of them are not so practical as the designers expected. This paper points out the crux of this situation and argues that the research on DSS should pay some more attention to the decision making activities before the model using stage. A method named "Problem Situation Decomposing Graph (PSDG)" is presented in this paper for helping the decision maker(DM) elicit the decision making problems. A PSDG is an acycle AND/OR logical directed graph, and which includes all the factors affecting the problem situation based on the DM's knowledge. The logical nodes and parameter determining methods in PSDG can reflect the DM's decision making style. This paper introduces some basic concepts of PSDG, discusses some of its characteristics, and proposes a logical adjacency matrix for PSDG representation and analysis. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=DingRonggui kn-aut-sei=Ding kn-aut-mei=Ronggui aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=110 end-page=114 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Checking the Parity of (#Jc - 1)=2 of Genus 2 and 3 Hyperelliptic Curves en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper shows a method for checking the parity of (#Jc ? 1)/2 without calculating the order #Jc, where #Jc is the order of genus 2 or 3 hyperelliptic curve. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=183 end-page=189 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Design Production System with Multi Energy Resources en-subtitle= kn-subtitle= en-abstract= kn-abstract=This research proposes a strategy for reducing both electricity charge and environmental load by considering multi energy sources. The reduction of the contract electric demand is considered, and its differential cost is used for purchasing substitute power sources. Some variables, such as the amount of reduced contract demand, and amount of electricity are generated by each substitute power source. By using those variables, we formulate a simulation model that enables to minimize the energy cost and environmental cost. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TabuchiSatoshi kn-aut-sei=Tabuchi kn-aut-mei=Satoshi aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=53 end-page=57 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Designing an Automatic Monitoring System for Unmanned Rooms en-subtitle= kn-subtitle= en-abstract= kn-abstract=A method for designing a monitoring system with multiple cameras is proposed in order to supervise and recognize the progress of wide work area. First, a wide view camera is deveeloped by combining several usual cameras so that its visual angle could cover more than ƒÎ/2. Secondly, A method for determining the number and location points of cameras is proposed by considering the shape of monitored area and the installation cost of cameras. The monitored area is divided into three kinds of basic shape (rectangular form, L form and convex form). For every basic shape area, the camera is located at the vertex pasition, so that the whole area can be monitored by the camera. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=LiSen kn-aut-sei=Li kn-aut-mei=Sen aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYosiomi en-aut-sei=Munesawa en-aut-mei=Yosiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=13 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Designing the Supplying Method of Parts to an Assembly Line en-subtitle= kn-subtitle= en-abstract= kn-abstract=We propose a method to design the supplying method of parts to an assembly line. Three types of supplying model (Serial, Parallel, and Mixed) are proposed based on the relation between the area of part and that of the transportation equipment. The part is supplied by the pallet on which the all parts of one product are arranged or by the lot of one part. AGV or conveyor are used to transport the pallet. The supplying model is evaluated from the total transportation cost calculated from the price of the transportation equipment and of land. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=DwiantoGatot kn-aut-sei=Dwianto kn-aut-mei=Gatot aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Dept. of Mechanical Engineering. Faculty of Engineering affil-num=3 en-affil= kn-affil=Dept. of Mechanical Engineering. Faculty of Engineering END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=71 end-page=81 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Generating Prime Order Elliptic Curves over F(q(2c)) en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper proposes an algorithm for generating prime order elliptic curves over extension field whose extension degree is a power of 2. The proposed algorithm is based on the fact that the order of the twisted elliptic curve is able to be a prime number when the extension degree for the twist operation is a power of 2. When the definition field is F(2(40)?87)(4) , the proposed algorithm can generate a prime order elliptic curve within 5 seconds on PentiumIII (800MHz) with C language. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Communication Network Engineering Okayama University affil-num=2 en-affil= kn-affil=Department of Communication Network Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method for Standardizing Parts with Integer Programming en-subtitle= kn-subtitle= en-abstract= kn-abstract=A method for standardizing parts is proposed. This method aims to reduce the sort of parts for cutting the manufacturing cost and for improving specifications of parts. Two linear mathematical programming models are proposed for standardizing the parts. One model aims at cutting cost half without causing any degradation of mechanical specifications of parts. The other model aims at doubling mechanical specifications of parts below the acceptable manufacturing cost. These models are formulated in 0-1 integer programming forms. The integer programming model shows which part is common to other parts. An example is shown to demonstrate the use of the developed method. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=DongLiu kn-aut-sei=Dong kn-aut-mei=Liu aut-affil-num=1 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=2 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=1 article-no= start-page=1 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19901214 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method of Cubic Object Feature Extraction en-subtitle= kn-subtitle= en-abstract= kn-abstract=How to reduce and simplify the calculation for image recognition is a very attractive and important issue in order to realize the real time control of a robot based on the image recognition results. This paper describes a method of extracting 2 - dimensional geometrical features of cubic objects based on the normal vector distributions from the visual information obtained with the laser range finder to reduce the calculation of the image recognition. In this research a laser beam is scanned in the horizontal plane to which the cubic objects stand vertically and the laser spot is detected with a TV camera every sampling time. These spots make an intermittent locus which includes some special lines corresponding to the cubic objects. To extract the features of the cubic objects, we utilize the normal vectors formed on the locus. If some normal vectors distribute in the same direction and the origin of the normal vectors are very close to their neighbor's, these normal vectors can be classified into the same class, -the straight line class. Because the normal vectors on the neighbor surfaces of the cubic objects are vertical to each other, we use this property to determine the pair of straight lines which belong to the cubic objects. Making the histogram based on the normal vectors with the same direction, we obtain the peaks which are supported by the points on the cubic object surfaces. Then, the points can be extracted from the set of points on the whole locus inversely according to the relations with the peaks and the features of the cubic object can be extracted by applying method of least square to these extracted points. The experiments proved the availability of the proposed processing algorithm. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=GaoHong kn-aut-sei=Gao kn-aut-mei=Hong aut-affil-num=1 ORCID= en-aut-name=WadaTsutomu en-aut-sei=Wada en-aut-mei=Tsutomu kn-aut-name=˜a“c—Í kn-aut-sei=˜a“c kn-aut-mei=—Í aut-affil-num=2 ORCID= en-aut-name=NoritsuguToshiro en-aut-sei=Noritsugu en-aut-mei=Toshiro kn-aut-name=‘¥ŽŸr˜Y kn-aut-sei=‘¥ŽŸ kn-aut-mei=r˜Y aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Industrial and Mechanical Engineering affil-num=3 en-affil= kn-affil=The Graduate School of Natural Science and Technology END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=61 end-page=65 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method of Shape Recognition Using Geometry Information en-subtitle= kn-subtitle= en-abstract= kn-abstract=At present, the two dimensional CAD systems which are used to make drawings go around widely. But in order to use design data at the lower stream of production process, the replacement from the two dimensional CAD systems to the three dimensional CAD systems have started. Accordingly it is dimensional drawings for the three dimensional shapes. And it is also necessary to store them in the three dimensional CAD systems. And in the studying of the machine vision which is often used as "Eyes of robot" , it is being studied the method to recognize the three dimensional objects from the two dimensional image. This is the problem about data exchange, too. Therefore in this report, we propose the method to exchange the plural two dimensional elements of figure from image relations between elements were found from reference of the element coordinates. Next, the three dimensional shapes were reasoned from reference of the knowledge (for corner, etc) prepared beforehand. Then that data were exchanged to the three dimensional CAD data. We report one example about this method. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamadaMitsuru kn-aut-sei=Yamada kn-aut-mei=Mitsuru aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Industrial Technology Center of Okayama Prefecture affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=85 end-page=89 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Method of Shape Recognition Using CAD Data and Vertex-Dictionary en-subtitle= kn-subtitle= en-abstract= kn-abstract=We reason the circumstances around the three-dimensional vertex from the information about the intersection point in the two-dimensional image data inputted from a camera on the premise that we use this method as the eye ot the robot. In this method, we use the Vertex-Dictionary. We make the Vertex-Dictionary by calculation from CAD data of object figure (these data are already known) and the position data of the point of view. This dictionary includes the data of position and relations of connect surface etc. about a vertex. We get the data of three-dimensional vertex by comparison the data of two-dimensional intersection point in image data and Vertex-Dictionary. And we get the three-dimensional object by reasoning about the information of circumstances of all vertexes. Then we can recognize the three-dimensional object from image data. In this report, we explain the process to calculate the Vertex-Dictionary and some examples about this method. en-copyright= kn-copyright= en-aut-name=YamadaMitsuru en-aut-sei=Yamada en-aut-mei=Mitsuru kn-aut-name=ŽR“c[ kn-aut-sei=ŽR“c kn-aut-mei=[ aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=25 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Numerical Study on the Performance of an Open-type Flat-plate Solar Collector en-subtitle= kn-subtitle= en-abstract= kn-abstract=A set mathematical models was developed for predicting the performance of an open-type flat-plate solar collector, and solved numerically through an implicit difference method. The effects of various parameters on the absorption of solar energy for the collector were investigated. The results showed that the solar energy absorptance of the open-type flat-plate collector was relatively high especially for the region where the weather was humid and hot, and there were an optimum length and an optimum tilt angle for the absorbing plate on which the collector could obtain the highest solar energy absorptance. It was found that the latent heat flux of water evaporation could be 5 to 15 times larger than the sensible heat flux. The effects of the magnitude of the solar incident flux, the atmospheric humidity, the atmospheric temperature, the absorbing plate tilt angle, and water film thickness on the temperature rising of the water film were clarified in numerical quantities. The increase of the solar incident flux, the atmospheric humidity or the atmospheric temperature also resulted in a rise in the energy absorptance of the collector. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SongBaoyin kn-aut-sei=Song kn-aut-mei=Baoyin aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= en-aut-name=HoribeAkihiko en-aut-sei=Horibe en-aut-mei=Akihiko kn-aut-name=–x•”–¾•F kn-aut-sei=–x•” kn-aut-mei=–¾•F aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=55 end-page=67 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Procedure for Settling Multi-Criteria Problem by a Small Group of Decision Makers en-subtitle= kn-subtitle= en-abstract= kn-abstract=AHP can handle decision-making problems involving several criteria when some of these are difficult or impossible to compare other than numerically. When a small group of decision makers settle the multi-criteria problem by AHP, the members of group could not often reach an agreement with hierarchic structure involving objectives, criteria, sub-criteria and alternatives because they have different positions, interests, and opinions. Further, the members have different importances for criteria and sub-criteria, and have dissimilar preferences for alternatives. In this article, we reveal the troubleness of AHP in case of being used by a small group of decision makers. Moreover, we proposed a procedure of AHP which the members of group could easily agree with the structure of problem and the weights of criteria etc. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OhkuraAkira kn-aut-sei=Ohkura kn-aut-mei=Akira aut-affil-num=1 ORCID= en-aut-name=KameyamaYoshimasa en-aut-sei=Kameyama en-aut-mei=Yoshimasa kn-aut-name=‹TŽR‰Ã³ kn-aut-sei=‹TŽR kn-aut-mei=‰Ã³ aut-affil-num=2 ORCID= en-aut-name=SayamaHayatoshi en-aut-sei=Sayama en-aut-mei=Hayatoshi kn-aut-name=²ŽR”¹•q kn-aut-sei=²ŽR kn-aut-mei=”¹•q aut-affil-num=3 ORCID= en-aut-name=SuzukiKazuhiko en-aut-sei=Suzuki en-aut-mei=Kazuhiko kn-aut-name=—é–ؘa•F kn-aut-sei=—é–Ø kn-aut-mei=˜a•F aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FukumotoShuichi kn-aut-sei=Fukumoto kn-aut-mei=Shuichi aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering affil-num=5 en-affil= kn-affil=Daio Seishi Corporation END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=93 end-page=101 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Scheme to Classify Clouds with the Depolarization Ratio andBackscattering Coeffcient Measured by Lidar en-subtitle= kn-subtitle= en-abstract= kn-abstract=The optical properties of clouds were measured with a polarization Mie lidar during April, 2004 and investigated to categorize the particles detected by the lidar. The cloud layers were categorized into five types according to the depolarization ratios, as follows: (I) constant and small (less than 5%); increasing with height (II) nearly from 0% and (III) from about 50%; (IV) large and varying with the backscattering coefficient; and (V) sharply decreasing. This categorization of clouds enabled us to separate aerosols from clouds in a lidar signal. Comparison of the backscattering coefficients between clouds of types (I) and (II) suggested that the depolarization ratio induced by multiple scattering in dense clouds does not depend on the particle density. Estimation of the particle phase for the five cloud categories was also examined. en-copyright= kn-copyright= en-aut-name=IokibeKengo en-aut-sei=Iokibe en-aut-mei=Kengo kn-aut-name=ŒÜ•SŠø“ªŒ’Œá kn-aut-sei=ŒÜ•SŠø“ª kn-aut-mei=Œ’Œá aut-affil-num=1 ORCID= en-aut-name=ToyotaYoshitaka en-aut-sei=Toyota en-aut-mei=Yoshitaka kn-aut-name=–L“cŒ[F kn-aut-sei=–L“c kn-aut-mei=Œ[F aut-affil-num=2 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=3 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=1 end-page=25 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Simple Method to Evaluate Structural Stability of Group IV and III-V Semiconductors en-subtitle= kn-subtitle= en-abstract= kn-abstract=The structural stabilities of bulk Si, Ge, and GaAs are discussed based on the total energy evaluated by the summation of the band structure energy and the short-range repulsive potential between ions. The band structure energy is calculated by means of the simple tight-binding method. The tight-binding parameters are determined so as to fit to the results of a pseude potential calculation and Harrison's model is employed to include the influence of lattice deformation. The short-range-force is assumed to be of the exponential form and parameters are determined so as to reproduce an experimental value of bulk modulus. This treatment qualitatively well describes structural properties in spite of the simple computational procedure and roughly gives the known variation of the total energy for a <100> uniaxial strain. This method is able to be applied to an investigation of the structural stabilities of superlattices, for example, a strained layer superlattice consisting of hetero-semiconductors. en-copyright= kn-copyright= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MihoShigeru kn-aut-sei=Miho kn-aut-mei=Shigeru aut-affil-num=2 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=39 end-page=50 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Simple Model for Hydrogen-Bonding Ferroelectrics en-subtitle= kn-subtitle= en-abstract= kn-abstract=There are some substances in which their hydrogen bonds are considered to play quite important roles in their ferroelectric or antiferroelectric phase transition. These ferroelectrics usually have large isotope effects in phase transition temperatures and we expect the physics of hydrogen bonds is closely related to the effects. We propose a simple model describing the isolated hydrogen bond. Based on quantum-mechanical analyses of this model, we study the difference between the behavior of a proton and a deuteron in hydrogen bonds. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MatsubaraTakeo kn-aut-sei=Matsubara kn-aut-mei=Takeo aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Institute for Condensed Matter Theory END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=2 article-no= start-page=39 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Simple Model for Oxygen Conduction in Some Perovskite Compounds en-subtitle= kn-subtitle= en-abstract= kn-abstract=A simple model for oxygen ion conduction in perovskite compounds is proposed. The potential for an oxygen ion is calculated as the sum of the long range Coulomb potential and short range repulsive potential in a cubic lattice. The activation energy is estimated as the difference in the values of potential at the barrier and at the stable site. When appropriate conditions are satisfied, the activation energy has a minimum as a function of lattice constant in accordance with recent experiments. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=111 end-page=119 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study of Facility Layout Method in Recycling Plant using AGV en-subtitle= kn-subtitle= en-abstract= kn-abstract=Our country faces a serious problem of the environmental pollution by the production and the large quantity consumption of the industry product. The thoroughness of resources recycling has become necessary to solve these problems. As for the product design and the production control, how productivity should be improved has been discussed with extreme emphasis. But from now, as for the product design, both assemblability and disassemblability must be taken into consideration at the same time. And also in production management, it must be investigated how the products can be recycled in the low cost. Therfore, the facility layout method with two phases in recycling plant, which is composed of both the procedure for the layout of facility group and the procedure for the layout of intermal facility group by the optimal solution method and the suboptimal solution method by neural network is proposed in this paper. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiharaYutaka kn-aut-sei=Fujihara kn-aut-mei=Yutaka aut-affil-num=1 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=2 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Matsue National College of Technology, Department of Control Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=31 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study on Robot System to Hand Surgical Intrument to a Surgeon in a Surgery (1st Report, Development of Surgical Instrument Recognition System) en-subtitle= kn-subtitle= en-abstract= kn-abstract=The nurse supporting robot system to prepare and hand surgical instruments to a surgeon is proposed to reduce work of nurse in a surgical operation. In this paper, the surgical instrument recognition system (SIRS) is developed to hand the surgical instruments to a surgeon by the robot. The characteristics ot the instruments are area of the instruments, ratio of minimum center-contour distance to maximum one and its outline contour, are recognized by using the image processing. Kinds of the instruments are distinguished by these characteristics. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IwamotoHidehisa kn-aut-sei=Iwamoto kn-aut-mei=Hidehisa aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HashimotoAtsufumi kn-aut-sei=Hashimoto kn-aut-mei=Atsufumi aut-affil-num=5 ORCID= en-aut-name=SekiShuji en-aut-sei=Seki en-aut-mei=Shuji kn-aut-name=ŠÖB“ñ kn-aut-sei=ŠÖ kn-aut-mei=B“ñ aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Kure National College of Technology affil-num=2 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=3 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=4 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=5 en-affil= kn-affil=Dept. of System Engineering, Okayama University affil-num=6 en-affil= kn-affil=Dept. of Medicine, Okayama University END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=59 end-page=75 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study on the Elasto-plastical Constitutive Equation for Unsaturated Soil en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, first, an elasto-plastic consitituve equation for unsaturated soil was developed by considering of the basically behavior of unsaturated soil. Second, the results of a number of triaxial test and a set of rigid foundation model tests were simulated by using this constitutive equation, the agreement between observed and computed results was satisfactory and confirms the possibilities of this constitutive equation. en-copyright= kn-copyright= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SunYao kn-aut-sei=Sun kn-aut-mei=Yao aut-affil-num=2 ORCID= en-aut-name=KohnoIichiro en-aut-sei=Kohno en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=15 end-page=42 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Study on the Planning and Scheduling of Production System Considering Demand Changes en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we studied a planning and scheduling of production system considering demand changes. In the proposed system, planning part determines lot-size and amount of jobs in production. On the other hand, scheduling part determines the production sequence of jobs. In order to treat with the demand changes, both planning and scheduling should work well simultaneously. In the proposed system, preset and real time production control system is newly constructed from the view point of adaptive control. In the system, production planning is modified when the difference between production amount and demand becomes large. Moreover, production schedule is regenerated when the determined schedule is deviated from the prospected one. The scheduling system is characterized as the autonomous decentralized optimization system where each job works as agent and agent searches its appropriate starting time of processing. The effectiveness of the proposed system is confirmed by numerical examples. en-copyright= kn-copyright= en-aut-name=OhtaniRyuji en-aut-sei=Ohtani en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=97 end-page=135 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Abductive Proof Procedure with Adjusting Derivations for General Logic Programs en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we formulate a new integrity constraint in correlation with 3-valued stable models in an abduction framework based on general logic programs. Under the constraint, not every ground atom or its negation is a logical consequence of the theory and an expected abductive explanation, but some atom may be unspecified as a logical consequence by an adjustment. As a reflection of the integrity constraint with an adjustment, we augment an adjusting derivation to Eshghi and Kowalski abductive proof procedure, in which such an unspecified atom can be dealt with. en-copyright= kn-copyright= en-aut-name=YamasakiSusumu en-aut-sei=Yamasaki en-aut-mei=Susumu kn-aut-name=ŽRèi kn-aut-sei=ŽRè kn-aut-mei=i aut-affil-num=1 ORCID= en-aut-name=KuroseYoshinori en-aut-sei=Kurose en-aut-mei=Yoshinori kn-aut-name=•£‹`‘¥ kn-aut-sei=•£ kn-aut-mei=‹`‘¥ aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=39 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Acousticmyogram Measured with Electrosimulation During Muscle Fatigue en-subtitle= kn-subtitle= en-abstract= kn-abstract=The acousicmyogram (AMG) is a mechanical phenomenon recorded at the surface of an active muscle. It is used to monitor force production, fatigue, and contractile properties of muscle. In this study, the new electrode with accelerometer for electrostimulation and acoustic detection. It consists of Ag-AgCl active electrode and solid-gel annular groud, and a very light piezoresistive accelerometer. The recorded AMG waveform depends on the pulse amplitude and duration of stimulation current and its lag from the electroatimulation is about 7 ms. The strengh-duration (S-D) curve (the threshold current for stimulation vs. pulse duration) describes the excitability of muscle. The left forearm is electrostimulated by using the same electrode and the muscle vibration (AMG) is recorded with accelerometer. During the muscle fatigue, the S-D curve changes and the current threshold increases under the same pulse duration. The rheobase of S-D curve increases gradually but the chronaxie hardly changes during muscle fatigue. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YanagiMakoto kn-aut-sei=Yanagi kn-aut-mei=Makoto aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=93 end-page=105 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Advection Dispersion by Eulerian Lagrangian Finite Element Method en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper the author will be describe phenomena of advection dispersion in subsurface flow by using Eulerian Lagrangian Finite Element Method. Where Finite Element Method with Galerkin formulation and weigthed residual method is used to solve seepage and advection dispersion equation. The problem of one dimensional and two dimensional rectangular wave are analyzed in this paper. And the result of numerical analyses will be compared with analytical solutions. The numerical results showed the very good agreement with the analytical solutions. en-copyright= kn-copyright= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SudindaTeddy kn-aut-sei=Sudinda kn-aut-mei=Teddy aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HishiyaTomoyuki kn-aut-sei=Hishiya kn-aut-mei=Tomoyuki aut-affil-num=3 ORCID= en-aut-name=KohnoIchiro en-aut-sei=Kohno en-aut-mei=Ichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Graduate Student in Department of Civil Engineering affil-num=3 en-affil= kn-affil=D I A Consultant affil-num=4 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=2 article-no= start-page=89 end-page=97 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200303 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Aerosol Extinction Coefficient Continuously Measured with Polarized Mie Scattering Lidar en-subtitle= kn-subtitle= en-abstract= kn-abstract=Aerosol extinction coefficients of clouds and dust were continuously measured in the year of 2002 with a polarized Mie-scattering lidar controlled by an automatic and remotely operating system utilizing internet services. Measured cloud extinctions were greater than 1.0 km(-1) below the altitude 6 km, 0.17 - 1.0 km(-1) between 6 and 10 km, and 0.091 - 0.3 km(-1) beyond 10km. Extinction of dust were 0.10 and 0.20 km(-1) for Asian dust and 0.057 km(-1) for urban dust. en-copyright= kn-copyright= en-aut-name=IokibeKengo en-aut-sei=Iokibe en-aut-mei=Kengo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ToyotaYoshitaka en-aut-sei=Toyota en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Departement of Communication Network Engineering, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=40 end-page=45 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Agent Based Plant Allocation and Transfer Routing of Productsin Case of Emergency en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, two problems, plant allocation problem and that of transfer routing from plants to customers, are considered simultaneously. Especially, adaptation scheme for emergency cases are checked. To solve these problems, decentralized agent based optimization procedures are used. In our study, oil production and products transfer in Saudi Arabia are treated. Through numerical experiments, practicability of the proposed method is verified. en-copyright= kn-copyright= en-aut-name=Al-SehaimSulaiman en-aut-sei=Al-Sehaim en-aut-mei=Sulaiman kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=NoseKazuo en-aut-sei=Nose en-aut-mei=Kazuo kn-aut-name=”\¨˜a•v kn-aut-sei=”\¨ kn-aut-mei=˜a•v aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School Okayama University affil-num=2 en-affil= kn-affil=Faculty of Engineering Okayama University affil-num=3 en-affil= kn-affil=Faculty of Engineering Osaka Sangyo University END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=1 article-no= start-page=1 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200211 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Agent Based Routing Control for Multi Mobile Robots in Transportation en-subtitle= kn-subtitle= en-abstract= kn-abstract=Auto Guided Vehicles (AGVs) are widely used in a semi-conductor fabricating factory and contribute to the stable production of a high quality semi-conductor products. In the near future, further expansion of the transportation system is expected accompanied with the rapid growth of semi-conductor industries. In such situation, the necessity of performing quick planning of transportation route and transportation control will be elevated. In this paper, practicable planning of the transportation route and transportation control are studied based on the decentralized agent method. Especially, the geometrical sizes of AGVs are considered in the determination of transportation routes and control strategy avoiding the occurrence of mutual collisions or deadlock of AGVs. en-copyright= kn-copyright= en-aut-name=SotobayashiKen en-aut-sei=Sotobayashi en-aut-mei=Ken kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=11 end-page=16 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Aging in Dilute Al-Si Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=Aging behavior of Al-0.23mass % Si alloy was studied by measurements of elecrical resistivity. Resistvity maximum was observed in the aging curves at 273K after quenching from various temperatures. Appearance of maximum and its dependence on the quenching temperature were attributed to the formation of GP zones. Even in a more dilute alloy as 0.01mass % Si, the maximum of resistivity was also recognized. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=41 end-page=46 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Alkenylation and Allylation of Aldehydes by Using an Ni/Cr/TDAE Redox System en-subtitle= kn-subtitle= en-abstract= kn-abstract=In 360 females, Bone mineral density (BMD) in lumbar vertebrae (L2-L4) was assessed by quantitative computed tomography (QCT), and the values obtained were compared with the frequency of vertebral transformation or fracture as assessed by lateral scan image (scanogram) by X-ray CT. A correlation was observed between the frequency of vertebral transformation (or fracture) and lumbar BMD values : BMD under 125 mg/cm(3) was observed over 90% of women with vertebral transformation, and BMD under 70mg/cm(3) was found about 50% of them. These results suggest that decrease in BMD in lumbar vertebrae leads to vertebral transformation or fracture. Thus, measurement of BMD by QCT would be very useful in predicting vertebral transformation or fractures. en-copyright= kn-copyright= en-aut-name=KuroboshiManabu en-aut-sei=Kuroboshi en-aut-mei=Manabu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TanakaMuneaki en-aut-sei=Tanaka en-aut-mei=Muneaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KishimotoSuguru en-aut-sei=Kishimoto en-aut-mei=Suguru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=GotoKentaro en-aut-sei=Goto en-aut-mei=Kentaro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TanakaHideo en-aut-sei=Tanaka en-aut-mei=Hideo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemistry affil-num=2 en-affil= kn-affil=Department of Applied Chemistry affil-num=3 en-affil= kn-affil=Department of Applied Chemistry affil-num=4 en-affil= kn-affil=Department of Applied Chemistry affil-num=5 en-affil= kn-affil=Department of Applied Chemistry END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=1 article-no= start-page=39 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19881122 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Amorphous Oxides Prepared from Organometallic Compounds Part2. Structure Evolution in Sodium Borosilicate Gels en-subtitle= kn-subtitle= en-abstract= kn-abstract=Sodium borosilicate gels of compositions similar to that of Vycor(R) glass like 80SiO(2).15B(2)O(3).5Na(2)O (wt%) were prepared from hydrolysis and polycondensation of metal alkoxides under the HCl catalysis. Variation of specific surface area and porosity with temperature indicated that closed pores were opened below 400Ž, and collapsed above 450Ž after the porosity reached a maximum value around 450Ž. The structural evolution was examined due to IR spectra and a phase separation in the gels was observed. The solubility of the gels into 1N-HCl was studied as a function of the treatment temperature. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YuasaMotokazu kn-aut-sei=Yuasa kn-aut-mei=Motokazu aut-affil-num=2 ORCID= en-aut-name=MiuraYoshinari en-aut-sei=Miura en-aut-mei=Yoshinari kn-aut-name=ŽO‰Y‰Ã–ç kn-aut-sei=ŽO‰Y kn-aut-mei=‰Ã–ç aut-affil-num=3 ORCID= en-aut-name=TakahashiKatsuaki en-aut-sei=Takahashi en-aut-mei=Katsuaki kn-aut-name=‚‹´Ž–¾ kn-aut-sei=‚‹´ kn-aut-mei=Ž–¾ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemistry affil-num=2 en-affil= kn-affil=Sekisui Chemical Industry, Ltd. affil-num=3 en-affil= kn-affil=Department of Applied Chemistry affil-num=4 en-affil= kn-affil=Department of Applied Chemistry END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=1 article-no= start-page=31 end-page=38 dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19881122 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Amorphous Oxides Prepared from Organometallic Compounds Part 1. Preparation of Sodium Borosilicate Gels en-subtitle= kn-subtitle= en-abstract= kn-abstract=Sodium borosilicate gels of compositions similar to that of Vycor(R) glass like 80SiO(2).15B(2)O(3).5Na(2)O(wt%) were prepared from hydrolysis and polycondensation of tetraethyl orthosilicate, trimethyl borate, and sodium methylate under the HCl catalysis. Variation of the gelation time is examined as a function of the mixing ratio of the starting materials and the catalyst. The thermal behavior of the gels has been discussed on the basis of their TG and DTA traces. en-copyright= kn-copyright= en-aut-name=MiuraYoshinari en-aut-sei=Miura en-aut-mei=Yoshinari kn-aut-name=ŽO‰Y‰Ã–ç kn-aut-sei=ŽO‰Y kn-aut-mei=‰Ã–ç aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YuasaMotokazu kn-aut-sei=Yuasa kn-aut-mei=Motokazu aut-affil-num=2 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=3 ORCID= en-aut-name=TakahashiKatsuaki en-aut-sei=Takahashi en-aut-mei=Katsuaki kn-aut-name=‚‹´Ž–¾ kn-aut-sei=‚‹´ kn-aut-mei=Ž–¾ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemistry affil-num=2 en-affil= kn-affil=Sekisui Chemical Industry, Ltd. affil-num=3 en-affil= kn-affil=Department of Applied Chemistry affil-num=4 en-affil= kn-affil=Department of Applied Chemistry END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=11 end-page=19 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Algorithm for Generating Irreducible Cubic Trinomials over Prime Field en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper proposes an algorithm for generating irreducible cubic trinomials in the form x(3) + ax + b, b ¸ F(p), where a is a certain fixed non-zero element in the prime field F(p). The proposed algorithm needs a certain irreducible cubic trinomial over F(p) to be previously given as a generator; however, the proposed algorithm can generate irreducible cubic polynomials one after another by changing a certain parameter in F(p). In this paper, we compare the calculation cost and the average computation time for generating an irreducible cubic polynomial, especially trinomial, among Hiramoto et al. irreducibility testing algorithm, Berlekamp-Massey minimal polynomial determining algorithm, and the proposed algorithm. From the experimental results, it is shown that the proposed algorithm is the fastest among the three algorithms for generating irreducible cubic trinomials. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=The Graduate School of Natural Science and Technology Okayama University en-keyword=irreducible cubic polynomial kn-keyword=irreducible cubic polynomial en-keyword=minimal polynomial kn-keyword=minimal polynomial END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=105 end-page=110 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Analytical Method of Human Motion by Image Processing en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper deals with analytical method of human motion by image processing to make a model of the scooping process, Firstly, the scooping tool is the spoon, and while the scooping process is performing, the movement of the mouth center position and the spoon top position are measured by two cameras. As the amount of substance is over the uppermost area of the cup, the spoon is stuck obliquely into substance. Then the spoon is rotated and lifted up to the mouth. Secondly, we recognize the mouth center from the characteristic of the face image data and calculate the spoon top position to extract two points on the spoon handle from the time series images by two cameras. Finally, we describe the method of recognizing the coordinate of the mouth center and estimating the coordinate of the spoon top to analyse the scooping process. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TokunagaShuichi kn-aut-sei=Tokunaga kn-aut-mei=Shuichi aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Takuma National College of Technology affil-num=2 en-affil= kn-affil=Department of system engineering END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=2 article-no= start-page=21 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19890330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Applicability of Aggregate and Disaggregate Estimations to Mode Choice by Inter-regional Occupational Person Trips en-subtitle= kn-subtitle= en-abstract= kn-abstract=Diversion model and disaggregate behavioral model of logit type are adopted as aggregate and disaggregate estimates, respectively. Diversion model is assumed as a binary choice process including diversion ratio function at each step in the process. Diversion ratio is assumed as a function of generalized-travel-time ratio. The function is identified with each of the two steps of diversion; diverson from rail and bus to car at first and from the rest undiverted to bus at second. The data used are those on inter-regional occupational person trips. Each function are found enough and/or critically significant in the statistical sense. At the begginning, sixteen characteristics variables are enrolled in disaggregate model, which are identified by use of the above data. Six variables are reached finally and are all reasonable. A brief comparison of goodness of fit to the data are made between two models. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamadaMasahito kn-aut-sei=Yamada kn-aut-mei=Masahito aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiiNaoto kn-aut-sei=Fujii kn-aut-mei=Naoto aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Graduate Student END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue= article-no= start-page=45 end-page=62 dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19880331 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Experimental Study on Levee Failure Caused by Seepage and Preventive Measures en-subtitle= kn-subtitle= en-abstract= kn-abstract=There are two classifications of the mechanism of levee failure caused by floods; local seepage failure and progressive failure. The fundamental causes of levee failure produced by piping and erosion were studied and the safety of river leves during floods evaluated in terms of soil machanics. The critical hydraulic gradient and the process of progressive failure were obtained from one- and two- dimensional model experiments for piping and erosion. Problems inherent in and preventive measures against levee failure are discussed. In particular, effects of the Tsukinowa method, the most representative Japanese flood fighting method, were studied experimentally and improvements proposed. en-copyright= kn-copyright= en-aut-name=KohnoIichiro en-aut-sei=Kohno en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=1 ORCID= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=2 ORCID= en-aut-name=TakeshitaYuji en-aut-sei=Takeshita en-aut-mei=Yuji kn-aut-name=’|‰º—S“ñ kn-aut-sei=’|‰º kn-aut-mei=—S“ñ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=2 article-no= start-page=1 end-page=9 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19930325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Expert System for Determining Precedence Relation in Assembly en-subtitle= kn-subtitle= en-abstract= kn-abstract=Precedence relation in assembly has been determined by experience only. Now, an expert system is developed for determining such precedence relation. The conjugate states of the units of a product are shown in face frames and unit frames following the frame model. Seven rules are formulated. They consider geometrical interference of units, and make the precedence relation enable operation time to be shorter, and the number of JIG and substandards to be smaller. These rules are programized by computer language(PROLOG). en-copyright= kn-copyright= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=23 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Expert System for Reducing the Variety of Parts in Multi-item Production en-subtitle= kn-subtitle= en-abstract= kn-abstract=A method for reducing the variety of parts is proposed. The variety of parts in a product and the variety of parts among products are evaluated in consideration of some factors that influence the production cost. Rules are formulated for selecting parts which should be eliminated or whose designs should be changed to reduce these varieties. An expert system is developed based on this method for reducing the variety of parts. en-copyright= kn-copyright= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=DongRui kn-aut-sei=Dong kn-aut-mei=Rui aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=25 end-page=39 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Expert System for the Scheduling of a Flexible Assembly Line for Multi Item Products en-subtitle= kn-subtitle= en-abstract= kn-abstract=An expert system, in which preconditions and rules are expressed in logical formulas, is developed to support the scheduling of an automated job shop type multi-item assembly line. This system has the foIIowing characteristics to apply any case of schedulings: (1)Forward scheduling orbackward scheduling can be made. (2)The criterion on the input order of products, the dispatching process at each assembly station, and the selection of products from a buffer can be selected from several priority criteria. (3)Layout, number and velocity of vehicles, and the capacity of each buffer can be changed. en-copyright= kn-copyright= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Graduate school of natural science and technology affil-num=2 en-affil= kn-affil=Department of mechanical engineering END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=1 article-no= start-page=78 end-page=82 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Eye-Contour Extraction Algorithm from Face Image usingDeformable Template Matching en-subtitle= kn-subtitle= en-abstract= kn-abstract=A variety of studies on face components such as eyes, lips, noses, and teeth have been proceeding in medicine, psychology, biometrics authentication, and other areas. In this paper, we present an algorithm of extracting eye contours from a face image using the deformable template matching method. Our template for an eye contour is composed of three quadratic functions for the perimeter and one circle for the pupil. In our algorithm, a digital color face image is rst converted to a binary image of representing eyes, after the region around eyes is identied on the face image by using hues and values of the color image. Then, parameters in the template are optimized by a local search method with a tabu period and a hill-climbing, so as to t the template to the eye contour in the binary image. The accuracy of our algorithm is evaluated through sample face images of students. In addition, the application of our proposal to eye shape indices is investigated in a face image database "HOIP", where recognizable dierence exists in index distributions between males and females. en-copyright= kn-copyright= en-aut-name=FunabikiNobuo en-aut-sei=Funabiki en-aut-mei=Nobuo kn-aut-name=‘D‰gM¶ kn-aut-sei=‘D‰g kn-aut-mei=M¶ aut-affil-num=1 ORCID= en-aut-name=IsogaiMegumi en-aut-sei=Isogai en-aut-mei=Megumi kn-aut-name=ˆéŠLˆ¤ kn-aut-sei=ˆéŠL kn-aut-mei=ˆ¤ aut-affil-num=2 ORCID= en-aut-name=HigashinoTeruo en-aut-sei=Higashino en-aut-mei=Teruo kn-aut-name=“Œ–ì‹P•v kn-aut-sei=“Œ–ì kn-aut-mei=‹P•v aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OdaMasashi kn-aut-sei=Oda kn-aut-mei=Masashi aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Grad. School of Natural Science & Tech. Okayama University affil-num=2 en-affil= kn-affil=Grad. School of Natural Science & Tech. Okayama University affil-num=3 en-affil= kn-affil=Grad. School of Inform. Science & Tech. Osaka University affil-num=4 en-affil= kn-affil=Grad. School of Inform. Science & Tech. Osaka University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=169 end-page=175 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=An Image Processing Method for Handling Subject Piled in a Container en-subtitle= kn-subtitle= en-abstract= kn-abstract=We propose an image processing method for part handling robot for picking up subjects piled in a container. Line laser light is projected on subjects, and its external shape is detected by many segments of a line laser, and pitch, roll, and yaw angles of subject are recognized precisely. A priority rule is settled to choose one subject that is taken out. This rule is determined by considering the grasping space, the position of a subject, the movement space of hand and so on. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UedaKiyotaka kn-aut-sei=Ueda kn-aut-mei=Kiyotaka aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=2 article-no= start-page=21 end-page=25 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Quantum Waveguide : Effective Width and Height of Potential for Quantum Wires under Split Gates en-subtitle= kn-subtitle= en-abstract= kn-abstract=In order to apply quantum waveguides to electronic devices, we calculate the electrostatic potential in the split-gate quantum wire and establish the relation between the electrostatic potential and the square well potential which is usually assumed in simulations of these waveguides. The height and width of the square well potential are expressed as simple functions of the gate voltage and their dependencies are clarified. The results may be useful in calculating the characteristics of electronic devices based on quantum waveguides as functions of controllable parameters such as gate voltage. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TachibanaHiroyuki kn-aut-sei=Tachibana kn-aut-mei=Hiroyuki aut-affil-num=1 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electric and Electronic Engneering affil-num=2 en-affil= kn-affil=Department of Electric and Electronic Engneering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=95 end-page=113 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Superconducting Microstructures: Critical Temperature of Two-Dimensional Structures en-subtitle= kn-subtitle= en-abstract= kn-abstract=Critical temperatures of two-dimensional microstructures with superconducting proximity effect in the dirty limit are evaluated for various geometrical constructions. As a numerical method, the finite element method is applied. Guidelines in estimating critical temperatures are given for the case where the decay of superconducting order parameter is either sufficiently slow or fast in comparison with the scale length of the structure. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IshikuraSatoshi kn-aut-sei=Ishikura kn-aut-mei=Satoshi aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakayamaNorihisa kn-aut-sei=Takayama kn-aut-mei=Norihisa aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=81 end-page=93 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of Superconducting Microstructures: Formulation en-subtitle= kn-subtitle= en-abstract= kn-abstract=Numerical methods for the analysis of the proximity effect in superconducting microstructures in the dirty limit are formulated on the basis of the finite element method. One- and two-dimensional cases are considered and third order Hermite shape functions are used. The results are also applicable to investigations of electronic states in semiconductor superlattice structures. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=81 end-page=92 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Analysis of the Radiation Characteristics of a Primary-Feed Waveguide in a Quasi-Optical Antenna for Circular TE(On) Mode en-subtitle= kn-subtitle= en-abstract= kn-abstract=Are calculated the radiation characteristics of two types of primary-feed waveguides of millimeter wave quasi-optical antennas, which transform circular TE(On) mode into a linearly polarized beam. These antennas are utilized for heating and diagnostics of fusion plasma. Analysis is based on the Huygens-Fresnel principle, which takes the diffraction effect into account. For Convenience in analysis, a feed waveguide is divided into two sections, an uniform waveguide section and a visor section. Assuming that the diameter of the waveguide is several times as large as the wavelength and that the structure of the visor is open, the radiation field is approximated by superposition of direct radiation, and first and second reflection on the visor. Numerical results are presented and compared with experimental results. In these types of waveguides, the shadow section on the visor has a great influence on the radiation field. The results of calculation show that the length of the visor should be longer than that obtained by the geometrical optics, and the longer visor reduces the side-lobe level in the direction of the waveguide axis. The results agree well with those in experiments. en-copyright= kn-copyright= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=79 end-page=84 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Apatite Formation on Electrochemically Treated Titanium en-subtitle= kn-subtitle= en-abstract= kn-abstract=A titanium oxide gel was electrochemically prepared on Ti with a cell consisting of Ti as the working electrode, Pt as the counter one, AgCl as the reference one, and an aqueous solution of 0.1 mol/L Ca(NO(3))(2) as the electrolyte solution. The Ti electrode was kept at 9.5V for 1 hr for oxidation and subsequently kept at-3.0V for 10 min (Ca9.5-3.0):calcium ions were expected to be adsorbed at the latter treatment. Other Ti specimen was kept at -3.0V for 10 min (Ca-3.0). Both specimens were found so bioactive as to deposit apatite in 12 hr (Ca9.5-3.0) and in 1 day (Ca-3.0) when soaked in a simulated body fluid (Kokubo solution). Calcium carbonate detected on the surface of Ca9.5-3.0 caused no harmful effects on spontaneous deposition of apatite in the fluid. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=1 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=‘ì‘ kn-aut-sei=‘ì kn-aut-mei=‘ aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KoyanoKeiko kn-aut-sei=Koyano kn-aut-mei=Keiko aut-affil-num=3 ORCID= en-aut-name=TsuruKanji en-aut-sei=Tsuru en-aut-mei=Kanji kn-aut-name=“s—¯Š°Ž¡ kn-aut-sei=“s—¯ kn-aut-mei=Š°Ž¡ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Graduate School of Natural Science, Okayama University END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=1 article-no= start-page=17 end-page=28 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Application of Dead Beat Control method to the Water Level Control of Small-scale Hydroelectric Power Plant en-subtitle= kn-subtitle= en-abstract= kn-abstract=Small Scale Hydroelectric Power Generation is made using the water drop caused by the gradient difference between that of the river and that of the penstock. The water flow in this system apt to vary with time. Especially, at the time of the flood or that of the dry, the flow in the water stream varies largely. To realize the stable generation, it is necessary to maintain the water level in the head tank located in the mid way in the stream channel at a constant level. In this paper, variation of water level is forecasted using two-tank model for the penstock and the head tank and the water level control algorithm is proposed by deadbeat control. The effectiveness of the algorithm is evaluated beforehand using the simulation program of the water environment for the hydroelectric generation system. en-copyright= kn-copyright= en-aut-name=EndoShinichiro en-aut-sei=Endo en-aut-mei=Shinichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Dept. Electronic Control Engineering Gifu National College of Technology affil-num=2 en-affil= kn-affil=Dept. Electrical and Electronic Engineering Okayama Univerisity END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=21 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Application of Neural Network to Fault Diagnosis ofElectro-Mechanical System en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, neuro based intelligent diagnosis methods for electro-mechanical control system are proposed. A self organizing map neural network (SOM) is used to classify measured data of the target system as a qualitative diagnostic method. Besides of the above procedure, it is expected to attain more efficient maintenance by a quantitative estimation of failure. For the purpose, new method is proposed using a hierarchical neural network (HNN). In the method, classified results by SOM are processed for the quantitative diagnosis. Hierarchical neural network can identify inner structure of the relations between failure causes and its results that enables a quantitative diagnosis. en-copyright= kn-copyright= en-aut-name=TorigoeTakashi en-aut-sei=Torigoe en-aut-mei=Takashi kn-aut-name=’¹‰z’Žj kn-aut-sei=’¹‰z kn-aut-mei=’Žj aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name=¼—³Žu kn-aut-sei=¼ kn-aut-mei=—³Žu aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=28 end-page=39 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Application of Sequential Quadratic Programming Method toTemperature Distribution Control in Reactor Furnace en-subtitle= kn-subtitle= en-abstract= kn-abstract=In reactor furnace, due to high temperature and high pressure, data can be measured only near the furnace wall. In this paper, the way to estimate temperature distribution in a reactor furnace using measured data near the furnace walls and to control temperature distribution to the desired temperature distribution was studied. In the estimation, SQP method is employed using measured data near the furnace walls. As the result, the whole temperature distribution in a furnace could be obtained from such limited data. Furthermore, to control the temperature distribution in a reactor furnace, gas flow from multiple tuyeres and supplying material for controlling temperature distribution in a reactor furnace were determined by the SQP method. It was shown that temperature distribution in a furnace was regulated to achieve various desired distribution. Thus, it was verified that complicated temperature distribution in a reactor furnace could be controlled by combining furnace simulation and SQP method. en-copyright= kn-copyright= en-aut-name=IshimaruKazuhito en-aut-sei=Ishimaru en-aut-mei=Kazuhito kn-aut-name=ΊۘaŽj kn-aut-sei=ÎŠÛ kn-aut-mei=˜aŽj aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name=¼—³Žu kn-aut-sei=¼ kn-aut-mei=—³Žu aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=73 end-page=82 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Application of Transfer Matrix Method with Signal Flow-Chart to Analyze Optical Multi-Path Ring-Resonator en-subtitle= kn-subtitle= en-abstract= kn-abstract=A multi-path ring-resonator (MPRR) was proposed to extend FSR of ring resonator. However, it is complicated to analyze the MPRR by using well-known analysis techniques such as scattering matrix or other numerical methods. This paper describes procedure for deriving transfer matrix by means of signal flow-chart to analyze the MPRR. We do not need complicated calculation for steady state analysis because transfer matrix elements are formulated clearly. As a result, The calcultaion time in this method can be reduced 1/3 to 1/20 times compared with using scattering matirx method. Furthermore, a transmittance characteristics of the MPRR at FSR extension-factor of 10 will also be shown. This suggests that analysis of other types of the MPRR by using this method can be performed simply and take a shorter time. en-copyright= kn-copyright= en-aut-name=HidayatIip Syarif en-aut-sei=Hidayat en-aut-mei=Iip Syarif kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ToyotaYoshitaka en-aut-sei=Toyota en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TorigoeOsamu en-aut-sei=Torigoe en-aut-mei=Osamu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Departement of Communication Network Engineering, Okayama University affil-num=3 en-affil= kn-affil=Departement of Electrical and Electronic Engineering, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=5 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=1 article-no= start-page=43 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19911130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Application of the Adjoint Spectrum to the Frequency Tracking in Spectrometry with Tunable Diode Lasers Suffering from Temperature Drift en-subtitle= kn-subtitle= en-abstract= kn-abstract=A numerical technique called as "adjoint spectrum" has been proposed by the authors in a previous work. Two applications of it are presented here. It is demonstrated that by generalizing the aspect of adjoint spectrum it becomes possible to measure densities of mixed gases simultaneously. An experimental proof of this has been carried on and simultaneous measurement of densities of both methane and dinitrogen oxide was realized. On the other hand, it is also reported that frequency shifting of spectra, which is a cause of error in spectrometric measurements, can be corrected by exploiting the adjoint spectrum technique in connection with the Taylor expansion. Numerical examples showing the success of this method are reported as well. en-copyright= kn-copyright= en-aut-name=BouzidiMoncef en-aut-sei=Bouzidi en-aut-mei=Moncef kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=2 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=3 ORCID= en-aut-name=KagawaNaoki en-aut-sei=Kagawa en-aut-mei=Naoki kn-aut-name=ì’¼ŒÈ kn-aut-sei=ì kn-aut-mei=’¼ŒÈ aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HaiXu kn-aut-sei=Hai kn-aut-mei=Xu aut-affil-num=5 ORCID= en-aut-name=KosakaMegumi en-aut-sei=Kosaka en-aut-mei=Megumi kn-aut-name=¬âŒb kn-aut-sei=¬â kn-aut-mei=Œb aut-affil-num=6 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SanoHIroya kn-aut-sei=Sano kn-aut-mei=HIroya aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=5 en-affil= kn-affil=Measurement and Test Center, North-East Normal University affil-num=6 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=7 en-affil= kn-affil=Faculty of Engineering, Fukuyama University END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=1 article-no= start-page=41 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200211 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Automatic Camera Model Selection for Multibody Motion Segmentation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We study the problem of segmenting independently moving objects in a video sequence. Several algorithms exist for classifying the trajectories of the feature points into independent motions, but the performance depends on the validity of the underlying camera imaging model. In this paper, we present a scheme for automatically selecting the best model using the geometric AIC before the segmentation stage, Using real video sequences, we confirm that the segmentation accuracy indeed improves if the segmentation is based on the selected model. We also show that the trajectory data can be compressed into low-dimensional vectors using the selected model. This is very effective in reducing the computation time for a long video sequence. en-copyright= kn-copyright= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Information Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=1 article-no= start-page=107 end-page=116 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Automatic Detection of Circular Objects by Ellipse Growing en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a new method for automatically detecting circular objects in images: we detect an osculating circle to an elliptic arc using a Hough transform, iteratively deforming it into an ellipse, removing outlier pixels, and searching for a separate edge. The voting space is restricted to one and two dimensions for efficiency, and special weighting schemes are introduced to enhance the accuracy. We demonstrate the effectiveness of our method using real images. Finally, we apply our method to the calibration of a turntable for 3-D object shape reconstruction. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OhtaNaoya en-aut-sei=Ohta en-aut-mei=Naoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science Gunma University END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=89 end-page=94 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Backward Scheduling to Minimize the Actual Mean Flow Time with Dependent and Independent Setup Times en-subtitle= kn-subtitle= en-abstract= kn-abstract=The present paper deals with a new perfomance measure, the actual mean flow time, defined as a mean of the elapsed time of each job counted from the start time on a schedule to the corresponding due date. For the one machine backward scheduling model with a common due date and independent setup times, LPT schedule is shown as the optimal solution for the proposed measure. An optimal algorithm is presented for the case with dependent setup times on the basis of the algorithm by Arcelus and Chandra for a n / 1 / F forward scheduling problem. The proposed algorithm is coded in C-language and a computational experience is reported through a 16-bit computer. en-copyright= kn-copyright= en-aut-name=SekoguchiKenji en-aut-sei=Sekoguchi en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MiyazakiShigeji en-aut-sei=Miyazaki en-aut-mei=Shigeji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Sience and Technology affil-num=2 en-affil= kn-affil=Engineering Mathematics END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=31 end-page=40 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Basic Characteristics of Microvibration on the Skin Surface en-subtitle= kn-subtitle= en-abstract= kn-abstract=A small vibration on the body surface is expected to apply to a clinical examination of the autonomic nervous system. The vibration cannot be found by the naked eyes. It is called a microvibration (MV) or a minor tremor (MT). It is not cleared out why and how the MV occurs, but many papers about its occurrence and clinical application have been published. In this study, the typical spectrum of MV and the various causes of MV occurrence are studied. The relationships of MV with heart rate, muscle contraction and MV are discussed. The power spectrum of MV is obtained by using an autoregressive model. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IsayamaYoshiharu kn-aut-sei=Isayama kn-aut-mei=Yoshiharu aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NakauchiMakoto kn-aut-sei=Nakauchi kn-aut-mei=Makoto aut-affil-num=3 ORCID= en-aut-name=YamamotoTatsuma en-aut-sei=Yamamoto en-aut-mei=Tatsuma kn-aut-name=ŽR–{’C”n kn-aut-sei=ŽR–{ kn-aut-mei=’C”n aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=45 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bioactive Calcium Borosilicate Glasses for Enameling Titanium en-subtitle= kn-subtitle= en-abstract= kn-abstract=The thermal expansion coefficient of some bioactive glasses in the system CaO-SiO(2)-B(2)O(3) were adjusted to be similar to that of titanium by controlling the composition. A glass of composition 45CaO¥30SiO(2)¥25B(2)O(3) was selected among those as the enameling glass. A slurry was prepared by mixing the glass powder and ethanal to be developed on titanium and heated at 740Ž for 30 min. Thus treated specimen was soaked in a simulated body fluid (Kokubo solutiion). FT-IR reflection and thin film X-ray diffraction analyses indicated apatite formation on the glass coating layer within 12 h of soaking in the fluid. Thus titanium could be provided with bioactivity due to the enameling. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KobayashiKeizo kn-aut-sei=Kobayashi kn-aut-mei=Keizo aut-affil-num=2 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=‘ì‘ kn-aut-sei=‘ì kn-aut-mei=‘ aut-affil-num=3 ORCID= en-aut-name=OhtsukiChikara en-aut-sei=Ohtsuki en-aut-mei=Chikara kn-aut-name=‘å’ÎŽåÅ kn-aut-sei=‘å’Î kn-aut-mei=ŽåÅ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioengineering Science affil-num=2 en-affil= kn-affil=Department of Bioengineering Science affil-num=3 en-affil= kn-affil=Department of Bioengineering Science affil-num=4 en-affil= kn-affil=Department of Bioengineering Science END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=39 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bioactivity of Nb(V) and Ta(V)-Doped Calcium Silicate Glasses en-subtitle= kn-subtitle= en-abstract= kn-abstract=Nb(2)O(5)-and Ta(2)O(5)-doped calcium si1icate glasses were soaked for various periods in a simulated body fluid(Kokubo solution) up to 30 days. Apatite formation ability of the surface of these glasses were investigated with thin-film X-ray diffraction and FT-IR reflection spectroscopy. The effects of these additive oxides on the bioactivity of CaO¥SiO(2) based glass were discussed. A small amount of Nb(2)O(5) and Ta(2)O(5) suppressed the rate of silica hydrogel layer formation and the apatite formation on the surface of the glasses. The rate of the apatite nucleation on the surface of Nb(2)O(5)-doped calcium silicate glass was slower than that on the surface of Ta(2)O(5)-doped calcium silicate glass. It was concluded that the decrease in the apatite forming ability of calcium silicate glasses by these additive oxides is attributed to the suppression of formation of silica hydrogel layer which plays an important role in apatite nucleation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ImayoshiNaoki kn-aut-sei=Imayoshi kn-aut-mei=Naoki aut-affil-num=1 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=‘ì‘ kn-aut-sei=‘ì kn-aut-mei=‘ aut-affil-num=2 ORCID= en-aut-name=OhtsukiChikara en-aut-sei=Ohtsuki en-aut-mei=Chikara kn-aut-name=‘å’ÎŽåÅ kn-aut-sei=‘å’Î kn-aut-mei=ŽåÅ aut-affil-num=3 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue= article-no= start-page=27 end-page=35 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=201101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Bundle Adjustment for 3-D Reconstruction: Implementation and Evaluation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We describe in detail the algorithm of bundle adjustment for 3-D reconstruction from multiple images based on our latest research results. The main focus of this paper is on the handling of camera rotations and the efficiency of computation and memory usage when the number of variables is very large; an appropriate consideration of this is the core of the implementation of bundle adjustment. Computing the fundamental matrix from two views and reconstructing the 3-D structure from multiple views, we evaluate the performance of our algorithm and discuses technical issues of bundle adjustment implementation. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=46 cd-vols= no-issue= article-no= start-page=10 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Calibration of Ultra-Wide Fisheye Lens Cameras by Eigenvalue Minimization en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a new technique for calibrating ultra-wide fisheye lens cameras by imposing the constraint that collinear points be rectified to be collinear, parallel lines to be parallel, and orthogonal lines to be orthogonal. Exploiting the fact that line fitting reduces to an eigenvalue problem, we do a rigorous perturbation analysis to obtain a Levenberg-Marquardt procedure for the optimization. Doing experiments, we point out that spurious solutions exist if collinearity and parallelism alone are imposed. Our technique has many desirable properties. For example, no metric information is required about the reference pattern or the camera position, and separate stripe patterns can be displayed on a video screen to generate a virtual grid, eliminating the grid point extraction processing. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=49 end-page=65 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Characteristics of Errors in Open and Closed Trilateration Nets en-subtitle= kn-subtitle= en-abstract= kn-abstract=Distance measurements have been more and more easy and accurate to carry out, and it is expected that distance mesurements may provide rather accurate results than angle measurements. Under these circumstances, caracteritics of errors in typical trilateration nets are investigated. The nets investigated are as follows: From single row of chains to pranimetrically extended nets in figure, open and closed networks with respect to external constraint, and with and without as to internal constraint. Computations are performed by use of the method of condition equations, and behaviours of error propagation and errors of coordinates of stations in the nets are shown in case of typical nets. For example, effects for decrease in error by composing a double row of chains and by enforcing external constraints are explained. en-copyright= kn-copyright= en-aut-name=MoriChuji en-aut-sei=Mori en-aut-mei=Chuji kn-aut-name=X’‰ŽŸ kn-aut-sei=X kn-aut-mei=’‰ŽŸ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MachidaKen-ichi kn-aut-sei=Machida kn-aut-mei=Ken-ichi aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Sagae Technical High School END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=137 end-page=146 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Characteristics of a Monoacylglycerol Lipase Isolated from Pseudomonas sp. LP7315 -Hydrolysis and Synthesis of Monoglycerides en-subtitle= kn-subtitle= en-abstract= kn-abstract=A monoacylglycerol lipase (MGL) was purified from Pseudomonas sp. LP7315 by ammonium sulfate precipitation, anion-exchange chromatography, and preparative electrophoresis. The purified enzyme was homogeneous on an SDS-polyacrylamide gel with a molecular mass of 59 kDa. Its hydrolytic activity was confirmed to be specific for monoglycerides: the enzyme did not hydrolyze diand triglycerides. MGL was found to be stable even after l-h incubation at 65Ž. The hydrolytic activity depended not only on temperature and pH but also on the type of monoglyceride used. MGL also catalyzed monoglyceride synthesis at 65Ž in a solvent-free two-phase system, in which fatty acid droplets were dispersed in the glycerol phase with a low water content. The synthetic reaction proceeded at a constant rate for approximately 24 h and reached an equilibrium after 48 h of reaction. The initial rate of the synthetic reaction depended on several factors: the type of fatty acid used as the substrate, the amounts of fatty acid and glycerol, and the concentration of MGL in the glycerol phase. To analyze the effects of these factors, a kinetic model was developed based on the assumption that the adsorption equilibrium of MGL molecules at the interface between the two phases is the rate-determining factor for the synthetic reaction. The model was found to yield a good approximation of the initial synthetic rate under various reaction conditions. The analysis suggests that the adsorption behavior of MGL onto the interface had a large effect on the initial rate of the monoglyceride synthesis. en-copyright= kn-copyright= en-aut-name=SakiyamaTakaharu en-aut-sei=Sakiyama en-aut-mei=Takaharu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YoshimiTsuyoshi en-aut-sei=Yoshimi en-aut-mei=Tsuyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MiyakeAkira en-aut-sei=Miyake en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=UmeokaMidori en-aut-sei=Umeoka en-aut-mei=Midori kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TanakaAtsushi en-aut-sei=Tanaka en-aut-mei=Atsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=OzakiSho en-aut-sei=Ozaki en-aut-mei=Sho kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=NakanishiKazuhiro en-aut-sei=Nakanishi en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=5 en-affil= kn-affil=Daiwa Kasei K.K. affil-num=6 en-affil= kn-affil=Daiwa Kasei K.K. affil-num=7 en-affil= kn-affil=Department of Bioscience and Biotechnology END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=77 end-page=84 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Chemical States of Fluorine Atoms and Laser-Induced Crystallization in rf-Sputtered Thin Films of Amorphous Lead Fluorosilicate en-subtitle= kn-subtitle= en-abstract= kn-abstract=Amorphous films of lead oxyfluorosilicate were prepared with a rf-sputtering technique, and the distribution profiles of the component elements and chemical states of the fluoride ions were analyzed with an X-ray photoelectron spectrometer. Si atoms with an expanded coordination, O(4)Si-F, were present near the surface, and O(3)Si-F units were present in the deeper part of the films. Electrical resistance indicated transition to a conduction state for the films containing fluoride ions, while the films were crystallized to precipitate low quartz by the irradiation of He-Ne laser of 3 mW up to 1 sec. en-copyright= kn-copyright= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KawamuraHaruyuki kn-aut-sei=Kawamura kn-aut-mei=Haruyuki aut-affil-num=2 ORCID= en-aut-name=MiuraYoshinari en-aut-sei=Miura en-aut-mei=Yoshinari kn-aut-name=ŽO‰Y‰Ã–ç kn-aut-sei=ŽO‰Y kn-aut-mei=‰Ã–ç aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Applied Chemsitry affil-num=2 en-affil= kn-affil=Department of Applied Chemsitry affil-num=3 en-affil= kn-affil=Department of Applied Chemsitry END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=9 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Clusters in Low-Concentrated Al-Mg Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=The state above the solubility temperature of GP zones of Al-3mass % Mg alloy, which has a tendency for precipitation and preprecipitation at low temperature, was studied by resistivity measurement. Homogenization treatment at high temperature reduced Mg atoms in the surface layer. After quenching from 623K, the specimen was annealed sequentially at various temperatures above the GP zone solvus. The stationary resistivity obtained in annealing at a temperature was the same irrespective of the starting state and increased with decreasing annealing temperature. No precipitation was observed in the annealing. The results are not in favor of the segregation of Mg atoms to the dislocation loops but of the short range clustering. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NakagawaK. en-aut-sei=Nakagawa en-aut-mei=K. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YokotaY. en-aut-sei=Yokota en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science affil-num=3 en-affil= kn-affil=Okayama University of Science affil-num=4 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=33 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Collimation of Cerenkov-SHG Blue Light with a Parabolic Mirror en-subtitle= kn-subtitle= en-abstract= kn-abstract=Proposed here is a convenient optical system to collimate the crescent shaped blue laser beam radiated from a Cerenkov SHG in channel waveguide configuration. This collimation system is consisted of a parabolic mirror and has a very large tolerance to the mirror displacement. The anisotropy of the nonlinear crystal on which the waveguide is fabricated has been taken into account. The optimum mirror location is given to obtain a collimated blue laser beam with an aberration less than 0.07ƒÉ. By using an objective lens, the collimated beam can be focused down to a thin beam with the spot size less than 1ƒÊm. en-copyright= kn-copyright= en-aut-name=WangMing en-aut-sei=Wang en-aut-mei=Ming kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AhmedAnis en-aut-sei=Ahmed en-aut-mei=Anis kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=3 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=73 end-page=89 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Combinatorial Boundary Tracking of a 3D Lattice Point Set en-subtitle= kn-subtitle= en-abstract= kn-abstract=Boundary tracking and surface generation are ones of main topological topics for three-dimensional digital image analysis. However, there is no adequate theory to make relations between these different topological properties in a completely discrete way. In this paper, we present a new boundary tracking algorithm which gives not only a set of border points but also the surface structures by using the concepts of combinatorial/algebraic topologies. We also show that our boundary becomes a triangulation of border points (in the sense of general topology), that is, we clarify relations between border points and their surface structures. en-copyright= kn-copyright= en-aut-name=KenmochiYukiko en-aut-sei=Kenmochi en-aut-mei=Yukiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ImiyaAtsushi en-aut-sei=Imiya en-aut-mei=Atsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology, Okayama University affil-num=2 en-affil= kn-affil=National Institute of Informatics Department of Informatics, The Graduate University for Advanced Studies END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=7 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Comparative Considerations of Eliminating Method for Power Line Interference in Electrocardiography en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper describes a new measurment method and principle of power line interference elimination in ECG signal using inverse loop and AC power line configuration (APC). First, we considered that magnetic induction effect not only depend on a conductive loop area that formed by shielded wires that connect the object and amplifier but also effect of body area effective must be considered. It is simple and useful because interference can be eliminated to very small value show that the condition and it can be applied in a real ECG signal recording. Second, results show that the contribution of displacement currents into the object especially APC in vertical configuration is smaller than it in other one. Because this method is so easy that it is convenient to be used to understand some aspects of power line interference elimination phenomenon. Hence we expect that this method can be used as one of improvement method in measurement system of ECG signal recording. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=Adli kn-aut-sei=Adli kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamamotoYoshitake en-aut-sei=Yamamoto en-aut-mei=Yoshitake kn-aut-name=ŽR–{®• kn-aut-sei=ŽR–{ kn-aut-mei=®• aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department ot Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=2 article-no= start-page=19 end-page=40 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19930325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Complex Dynamics and Search in A Cycle-Memory Neural Network en-subtitle= kn-subtitle= en-abstract= kn-abstract=Numerical simulations of a single layer recurrent neural network model in which the synaptic connection matrix is formed by summing cyclic products of succesive patterns show that complex dynamics can occur with the reduction of a connectivity parameter which is the number of connection between neurons. The structure in these dynamics is discussed from the viewpoint of realizing complex function using complex dynamics. en-copyright= kn-copyright= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=1 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of ElectricaJ and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of ElectricaJ and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=46 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=201201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=Faculty of Engineering, Okayama University en-aut-sei=Faculty of Engineering, Okayama University en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=47 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=Faculty of Engineering, Okayama University en-aut-sei=Faculty of Engineering, Okayama University en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=201101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Contents en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=Faculty of Engineering, Okayama University kn-aut-sei=Faculty of Engineering, Okayama University kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=5 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Control Method for Temperature Distribution in Reactor Furnace by Sequential Quadratic Programming Method en-subtitle= kn-subtitle= en-abstract= kn-abstract=Temperature distribution in the reactor furnace is mainly operated by gas blowing from multiple tuyeres and material charge distribution. The objective of our research is obtain the optimal profile of gas flow to control temperature distribution in the reactor furnace in the shortest possible time. We formulated the optimization problem to reduce deviation of temperature distribution from its desired one in the reactor furnace. Based on the formulation, gas blow conditions are optimized by a sequential quadratic programming method to realize the desired temperature distribution. The validity of the method was checked through numerical experiments. en-copyright= kn-copyright= en-aut-name=IshimaruKazuhito en-aut-sei=Ishimaru en-aut-mei=Kazuhito kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=41 end-page=47 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Control of Microscopic Superconducting Channel by the Proximity Effect en-subtitle= kn-subtitle= en-abstract= kn-abstract=A possibility to control the microscopic superconducting channel based on the proximity effect is theoretically shown by a simple one-dimensional analysis of de Gennes' equation for the order parameter. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Elecrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=91 end-page=103 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cooperation of Production, Product Handling and TransferScheduling for Semiconductor Fabrication en-subtitle= kn-subtitle= en-abstract= kn-abstract=Various kind of productions are made in semiconductor fabrications, where it employs the production system with multiprocesses and multiple Automated Guided Vehicles(AGVs) for transportation. It is difficult to optimize planning of production and transportation simultaneously because of the complicated flow of semifinished products. This paper describes the formulations of production scheduling, transportation routing and sequence planning of material handling system, and algorithm for simultaneous optimization of plannings by using solution space reduction and simulated annealing method. In this paper, all production system is decomposed to the production scheduling problem, transportation routing problem by AGVs and sequence planning of material handling system with managing stockers and buffers. Production scheduling problem and transportation routing problem are solved by the optimization algorithm using the decomposition routing problem. Sequence planning of material handling robot problem is solved by the algorithm using simulated annealing method. en-copyright= kn-copyright= en-aut-name=RyoheiHamana en-aut-sei=Ryohei en-aut-mei=Hamana kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Science Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=177 end-page=182 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cooperative Handling Robot with Human Beings en-subtitle= kn-subtitle= en-abstract= kn-abstract=The focus of this paper is on the analysis of delivery motion of human, development of an image processing method based on the motion analysis and development of the cooperative delivery robot using the image processing method. The proposed image processing method uses two cameras, and it uses a stereo reconstruction technique for measuring position and postures of hands. In addition, this image processing method recognize the number of fingers extending consciously, so the cooperative human beings could choose the kind of tool which he wants by holding out his hand in front of cameras. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KankiKunihiko kn-aut-sei=Kanki kn-aut-mei=Kunihiko aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OhtaKazuharu kn-aut-sei=Ohta kn-aut-mei=Kazuharu aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering affil-num=5 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=39 end-page=47 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Correction of Apparent Viscoelasticity of Skin Surface en-subtitle= kn-subtitle= en-abstract= kn-abstract=The body structures under the skin surface, such as bones and tendon, have an influence on the stiffness evaluation observed from the surface. In this case, the observed stiffness should be called an apparent stiffness. To obtain the biomechanical properties of skin itself, the influence of body structure should be removed. This study deals with the correction method of apparent viscoelasticity which calculated from apparent biomechanical impedance. This method is applied to the measured result of the forearm and the right chest to confirm its effectiveness. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=SakamotoShun-ya en-aut-sei=Sakamoto en-aut-mei=Shun-ya kn-aut-name=â–{rÆ kn-aut-sei=â–{ kn-aut-mei=rÆ aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IrieTakashi kn-aut-sei=Irie kn-aut-mei=Takashi aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=3 en-affil= kn-affil=Faculty of Education, University of Kochi END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=113 end-page=116 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cost Evaluation of The Improvement of Twisted Ate Pairing That Uses Integer Variable X of Small Hamming Weight en-subtitle= kn-subtitle= en-abstract= kn-abstract=Barreto?Naehrig (BN) curve has been introduced as an efficient pairing-friendly elliptic curve over prime field F(p) whose embedding degree is 12. The characteristic and Frobenius trace are given as polynomials of integer variable X. The authors proposed an improvement of Miller's algorithm of twisted Ate pairing with BN curve by applying X of small hamming weight in ITC?CSCC2008; however, its cost evaluation has not been explicitly shown. This paper shows the detail of the cost evaluation. en-copyright= kn-copyright= en-aut-name=SakemiYumi en-aut-sei=Sakemi en-aut-mei=Yumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=Katohidehiro en-aut-sei=Kato en-aut-mei=hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshikawa en-aut-sei=Morikawa en-aut-mei=Yoshikawa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Crystal rotation behavior with fatigue crack propagation in copper films en-subtitle= kn-subtitle= en-abstract= kn-abstract=Using a fatigue testing method by which fatigue cracks can be initiated and propagated in a film adhered to cover an elliptical through-hole in a base plate subjected to push-pull cyclic loads, annealed copper films with the thickness of 100ƒÊm and those reduced the thickness from the 100ƒÊm to 50ƒÊm by an electro-polishing were fatigued under a constant stress amplitude with a stress ratio of zero. The crystal rotation behavior with the fatigue crack propagation was investigated by measuring the crystal orientation around the fatigue crack initiated from the notch root before and after fatigue testing, using EBSD (Electron Back-scatter Diffraction) method. Then, the change of crystal orientation with fatigue testing was evaluated quantitatively from the misorientation between the crystal orientation matrix on the same point obtained before and after fatigue testing. As a result, the angle of the crystal rotation obtained from the region showing the high fatigue crack propagation rate was larger than that obtained from the region showing the low fatigue crack propagation rate for the film with the thickness of 100ƒÊm, while the fatigue crack propagated faster in the film with the thickness of 50ƒÊm than that with the thickness of 100ƒÊm regardless of the small crystal rotation angles with the fatigue testing for the film with the thickness of 50ƒÊm. en-copyright= kn-copyright= en-aut-name=ShimizuKenichi en-aut-sei=Shimizu en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ToriiTashiyuki en-aut-sei=Torii en-aut-mei=Tashiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=IshidaKoki en-aut-sei=Ishida en-aut-mei=Koki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Uchiyama Manufacturing Corp. END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=21 end-page=31 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cyclone Dust Collector with a Perforated Internal Rotating Cylinder en-subtitle= kn-subtitle= en-abstract= kn-abstract=An experimental investigation has been made of the cyclone dust collector with a perforated internal rotating cylinder. The size of the rotating cylinder is of 0.5D, where D is the diameter of the cyclone body, and is the same size as the outlet tube. The dust collection efficiency as well as the pressure loss has been measured when the inlet flow speed is 9 ~ 21 m/s and the rotating speed of the cylinder is 37 ~ 63 m/s. The velocity and pressure distributions were also measured. It is found that the collection efficiency decreases and the pressure loss increases as the rotating speed increases. It is also shown that both the inward radial velocity and the upward vertical velocity become large as the rotating cylinder increases its speed. As a whole, the rotation of the internal cylinder makes worse performance of the cyclone dust collector. en-copyright= kn-copyright= en-aut-name=YamamotoKyoji en-aut-sei=Yamamoto en-aut-mei=Kyoji kn-aut-name=ŽR–{‹±“ñ kn-aut-sei=ŽR–{ kn-aut-mei=‹±“ñ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=JiaoXuezhen kn-aut-sei=Jiao kn-aut-mei=Xuezhen aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=The Graduate School of Natural Science and Technology END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=1-2 article-no= start-page=39 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cytocompatibility of Silicone Elastomer Treated with Hydrogenperoxide Containing Tantalum Chloride en-subtitle= kn-subtitle= en-abstract= kn-abstract=Silicone elastomer was chemically treated at 60Ž for 7 days with 30 wt% H(2)O(2) solutions with or without TaCl(5) and soaked for various periods in a simulated body fluid(Kokubo solution) up to 21 days. Apatite formation ability of the surface of the silicone elastomer specimens was investigated with thin-film X-ray diffraction and FT-IR reflection spectroscopy. These silicone specimens did not deposit apatite or calcium phosphates, irrespective of chemical treatment. Osteoblast-like cells (MC3T3-El) derived from mouse were cultured on the specimens at 36.5Ž under 5%C0(2) and 95% humidity. Similar degree of proliferation of cells was observed at 7 days among three specimens, while the no treatment specimen after incubation for 5 days showed a lower degree of proliferation than the silicone treated with 30 wt% H(2)O(2) solutions with or without TaCl(5). Alkaline phosphatase activity of the cells proliferated on the no treatment specimen was lower than those of the silicone treated with 30 wt% H(2)O(2) solutions with or without TaCl(5). These results indicate that the cytotoxicity of the silicone could be improved by the chemical treatment with 30 wt% H(2)O(2) solutions with or without TaCl(5). en-copyright= kn-copyright= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name=‘ì‘ kn-aut-sei=‘ì kn-aut-mei=‘ aut-affil-num=1 ORCID= en-aut-name=ShirosakiYuki en-aut-sei=Shirosaki en-aut-mei=Yuki kn-aut-name=éè—R‹I kn-aut-sei=éè kn-aut-mei=—R‹I aut-affil-num=2 ORCID= en-aut-name=YabutaTakeshi en-aut-sei=Yabuta en-aut-mei=Takeshi kn-aut-name=âÖ“c•Ži kn-aut-sei=âÖ“c kn-aut-mei=•Ži aut-affil-num=3 ORCID= en-aut-name=TsuruKanji en-aut-sei=Tsuru en-aut-mei=Kanji kn-aut-name=“s—¯Š°Ž¡ kn-aut-sei=“s—¯ kn-aut-mei=Š°Ž¡ aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OhtsukiChikara kn-aut-sei=Ohtsuki kn-aut-mei=Chikara aut-affil-num=5 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology affil-num=5 en-affil= kn-affil=Graduate School of Materials Science. Nara Institute of Science and Technology affil-num=6 en-affil= kn-affil=Department of Bioscience and Biotechnology END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=61 end-page=66 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Cytotoxicity of the Bacillus thuringiensis Crystal Protein against Mammalian Cells en-subtitle= kn-subtitle= en-abstract= kn-abstract=The crystal proteins produced by Bacillus thuringiensis subsp, israelensis (Bti) and subsp. coreanensis A1519 strain were examined for the cytotoxicity against MOLT-4 and HeLa cells by MTT assay and LDH assay, The A1519 crystal proteins processed by proteinase K exhibited the specific cell-killing activity toward MOLT-4 with little damage to the cell membrane, On the other hand, the Bti crystal proteins processed by proteinase K caused the substantial damage to the cell membrane of both MOLT-4 and HeLa, leading to the cell lysis. The non-digested crystal proteins of both strains exhibited no cytotoxicity, These data suggested that while the Bti crystal proteins caused the colloid-osmotic swelling and cell lysis of MOLT-4 and HeLa, the proteinase K-digested A1519 crystal proteins induced the specific cell death of MOLT-4 through a mechanism other than that of Bti. en-copyright= kn-copyright= en-aut-name=YamagiwaMasashi en-aut-sei=Yamagiwa en-aut-mei=Masashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NambaAkitoshi en-aut-sei=Namba en-aut-mei=Akitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=AkaoTetsuyuki en-aut-sei=Akao en-aut-mei=Tetsuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MizukiEiichi en-aut-sei=Mizuki en-aut-mei=Eiichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhbaMichio en-aut-sei=Ohba en-aut-mei=Michio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=SakaiHiroshi en-aut-sei=Sakai en-aut-mei=Hiroshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology, Okayama University affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology, Okayama University affil-num=3 en-affil= kn-affil=Biotechnology and Food Research Institute, Fukuoka Industrial Technology Center affil-num=4 en-affil= kn-affil=Biotechnology and Food Research Institute, Fukuoka Industrial Technology Center affil-num=5 en-affil= kn-affil=Graduate School of Agriculture, Kyusyu University affil-num=6 en-affil= kn-affil=Department of Bioscience and Biotechnology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=44 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Decomposition of Time Petri Nets for Solving Optimal FiringSequence Problem en-subtitle= kn-subtitle= en-abstract= kn-abstract=Petri net model is a frequently-used versatile tool which can represent a widely discrete event system. However, when the scale of the system becomes large, the calculation time for solving optimal problem (optimal firing sequence problem) is markedly increased. In this paper, we propose an approximation method that achieves the efficiency improvement of the solution by decomposing the Petri net for solving the optimal firing sequence problem. A timed Petri Net is decomposed into several subnets in which the optimal firing sequence for each subnet is solved by Dijkstrafs algorithm in polynomial computational complexity. The effectivity of the proposed method is verified by numerical experiments for the flowshop schedule problem. en-copyright= kn-copyright= en-aut-name=MaenoRyota en-aut-sei=Maeno en-aut-mei=Ryota kn-aut-name=‘O–ì—Ç‘¾ kn-aut-sei=‘O–ì kn-aut-mei=—Ç‘¾ aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering The Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering The Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering The Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=51 end-page=59 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Density Functional Molecular Dynamics of Hydrogen Plasma en-subtitle= kn-subtitle= en-abstract= kn-abstract=Density functional molecular dynamics method is applied to hydrogen plasma in the domain of liquid metallic hydrogen. Tentative results for the proton-proton pair distribution function and the electron-proton pair distribution function are obtained. It is shown that with the increase of the parameter ƒÁ(s), we have increasingly strong screening of proton charge by electrons and the decrease of electron density in the domain between protons. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=1-2 article-no= start-page=27 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Depolarization properties of Asian dust (KOSA) measured hyLIDAR in Okayama in the spring of 1998 en-subtitle= kn-subtitle= en-abstract= kn-abstract=In spring of 1998, Asian dust was observed with a Mie LIDAR in Okayama University, which can measure depolarization ratio. Three events of intense Asian dust were occurred in the period and medially detailed structure of atmosphere was found after examining records. Asian dust was distinguished from water droplets and the possibility to study three dimensional dynamic structure of atmosphere were demonstrated. en-copyright= kn-copyright= en-aut-name=WeiHe en-aut-sei=Wei en-aut-mei=He kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=2 ORCID= en-aut-name=IokibeKengo en-aut-sei=Iokibe en-aut-mei=Kengo kn-aut-name=ŒÜ•SŠø“ªŒ’Œá kn-aut-sei=ŒÜ•SŠø“ª kn-aut-mei=Œ’Œá aut-affil-num=3 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=4 ORCID= en-aut-name=ToyotaYoshitaka en-aut-sei=Toyota en-aut-mei=Yoshitaka kn-aut-name=–L“cŒ[F kn-aut-sei=–L“c kn-aut-mei=Œ[F aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Graduate school of natural science and technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Graduate school of natural science and technology affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=5 en-affil= kn-affil=Department of Electrical and Electronic Engineering en-keyword=Mie lidar kn-keyword=Mie lidar en-keyword=Asian dust (KOSA) kn-keyword=Asian dust (KOSA) en-keyword=depolarization ratio kn-keyword=depolarization ratio en-keyword=backscattering ratio kn-keyword=backscattering ratio en-keyword=range normalized kn-keyword=range normalized END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=2 article-no= start-page=41 end-page=58 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19930325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Design of Hump Profile in Railroad Classification Yard en-subtitle= kn-subtitle= en-abstract= kn-abstract=The fundamental objective of this paper is to aggregate and establish a set of practical principles, guidelines, and procedures to clarify and improve classification yard design and to enhance the efficiency of the design process. The paper primarily addresses theoretical and technical aspects of hump yard height and grade design, placement of the switches and the retarders. It attempts to compile and document yard design procedures, based on the Theory of Energy Head and Energy Loss. This procedures are applicable to the design of new yards, rehabilitation of the existing yards of different types and sizes including manually operated as well as highly automated classification yards. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ProkopJiri kn-aut-sei=Prokop kn-aut-mei=Jiri aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MyojinSho kn-aut-sei=Myojin kn-aut-mei=Sho aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=2 article-no= start-page=73 end-page=85 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19930325 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Design of an Adaptive Observer to Estimate Unknown Periodical Disturbances en-subtitle= kn-subtitle= en-abstract= kn-abstract=This report deals with the problem of designing an adaptive observer for estimating unknown periodical disturbances. This is very practical problem because in the area of control of servomechanisms such disturbances are always encountered. When the disturbance cannot be directly measured or eliminated at the source it is necessary to perform a prediction. When a periodical disturbance is present the frequencies appear as unknown parameters and they have to be identified. In order to identify the unknown parameters, it is necessary to transform the composite system model, which contains the models of the controlled system and the disturbances, into observable canonical form. In addition, an inverse transformation is required to calculate the estimates of the present disturbances. In this report, firstly, a review of an adaptive observer for estimation of unknown periodical disturbances is presented. Later a calculation of the disturbance estimate is derived using the algebraic programming system REDUCE. The proposed method here allows to perform all the necessary transformations and to obtain the disturbance estimation without using the transformation matrix. The calculations of these transformations are complicated and, hitherto, there is no simple method to perform them. The results of disturbance estimation are illustrated by two examples. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KroumovValeri T. kn-aut-sei=Kroumov kn-aut-mei=Valeri T. aut-affil-num=1 ORCID= en-aut-name=InoueAkira en-aut-sei=Inoue en-aut-mei=Akira kn-aut-name=ˆä㺠kn-aut-sei=ˆäã kn-aut-mei=º aut-affil-num=2 ORCID= en-aut-name=MasudaShiro en-aut-sei=Masuda en-aut-mei=Shiro kn-aut-name=‘“cŽm˜N kn-aut-sei=‘“c kn-aut-mei=Žm˜N aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology affil-num=2 en-affil= kn-affil=Department of Information Technology affil-num=3 en-affil= kn-affil=Department of Information Technology END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=51 end-page=59 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of Clay Minerals by the Ignition Loss MethodUsing a Muffle Furnace en-subtitle= kn-subtitle= en-abstract= kn-abstract=A technique for determining the layer structure and content of clay minerals was developed based on the relationship between temperature, and moisture characteristics of clay minerals. Moisture content in standard specimens, prepared by mixing montmorillonite, kaolinite and quartz in various proportions, was determined by measuring weight loss after heating. Based on the results from differential thermal analysis tests, the ignition loss method was found to be widely applicable to clays with montmorillonite and kaolinite as the main components. Dehydration of constituent water occurred at 530Ž and 800Ž in two- and three-layered clay minerals, respectively. en-copyright= kn-copyright= en-aut-name=KohnoIichiro en-aut-sei=Kohno en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanabeKazuyasu kn-aut-sei=Tanabe kn-aut-mei=Kazuyasu aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TomitaTakemitsu kn-aut-sei=Tomita kn-aut-mei=Takemitsu aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering, Fukuyama University affil-num=3 en-affil= kn-affil=Department of Civil Engineering, Fukuyama University END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=1 article-no= start-page=61 end-page=68 dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19881122 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of Electrical Parameters for Skin during Galvanic Skin Reflex from Continuous Measurement en-subtitle= kn-subtitle= en-abstract= kn-abstract=Skin impedance satisfies the Cole-Cole arc's law. The change of skin impedance during GSR (Galvanic Skin Reflex) can be expressed by the change of equivalent parallel resistance approximately. Using these characteristics, the complicated change of skin impedance during GSR can be determined continuously from the measurement value in one frequency point. en-copyright= kn-copyright= en-aut-name=YamamotoYoshitake en-aut-sei=Yamamoto en-aut-mei=Yoshitake kn-aut-name=ŽR–{®• kn-aut-sei=ŽR–{ kn-aut-mei=®• aut-affil-num=1 ORCID= en-aut-name=YamamotoTatsuma en-aut-sei=Yamamoto en-aut-mei=Tatsuma kn-aut-name=ŽR–{’C”n kn-aut-sei=ŽR–{ kn-aut-mei=’C”n aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineeringtronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=107 end-page=114 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determination of Unsaturated Soil Hydraulic Properties by Transient Flow Experiments and Parameter Estimation en-subtitle= kn-subtitle= en-abstract= kn-abstract=The numerical feasibility of determining soil water retention and hydraulic conductivity functions simultaneously from one-dimensional transient flow experiments in the laboratory by parameter estimation method is evaluated. Soil hydraulic properties are assumed to be represented by van Genuchten's closed-form expressions involving two unknown parameters: coefficients ƒ¿ and n . These parameters are evaluated by nonlinear least-squares fitting of predicted and observed pressure head with time. Gravity drainage experiments are performed for Toyoura standard sand to evaluate the adequacy of this proposed method. en-copyright= kn-copyright= en-aut-name=KohnoIichiro en-aut-sei=Kohno en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=1 ORCID= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=2 ORCID= en-aut-name=TakeshitaYuji en-aut-sei=Takeshita en-aut-mei=Yuji kn-aut-name=’|‰º—S“ñ kn-aut-sei=’|‰º kn-aut-mei=—S“ñ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=1 article-no= start-page=99 end-page=109 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19901214 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determining Hydraulic Properties of Multilayered Aquifers from Pumping Test Data by Parameter Estimation en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, a numerical procedure of determining hydraulic properties in multilayered aquifers are presented. From pumping test data in multilayered aquifers, the coefficient of permeability and specific storage for each aquifer are determined by using a combination of finite element analysis and nonlinear least-squares optimization technique. This study especially points out necessity of stress-flow coupling analysis to explain the behaviors of pressure head in multilayered aquifer during pumping test. As a example, practical pumping test data were evaluate and the coefficients of permeability and specific storage of aquifers and aquitard were obtained. en-copyright= kn-copyright= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=1 ORCID= en-aut-name=TakeshitaYuji en-aut-sei=Takeshita en-aut-mei=Yuji kn-aut-name=’|‰º—S“ñ kn-aut-sei=’|‰º kn-aut-mei=—S“ñ aut-affil-num=2 ORCID= en-aut-name=KonoIichiro en-aut-sei=Kono en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Civil Engineering affil-num=2 en-affil= kn-affil=Department of Civil Engineering affil-num=3 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=197 end-page=205 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Determining Minimal Polynomial of Proper Element by Using Higher Degree Traces en-subtitle= kn-subtitle= en-abstract= kn-abstract=Modern communication engineerings, such as elliptic curve cryptographies, often requires algebra on finite extension field defined by modulus arithmetic with an irreducible polynomial. This paper provides a new method to detemine the minimal (irreducible) polynomial of a given proper element in finite extension field. In the conventional determination method, as we have to solve the simultaneous equations, the computation is very involved. In this paper, the well known "trace" is extended to higher degree traces. Using the new traces, we yield the coefficient formula of the desired minimal polynomial. The new method becomes very simple without solving the simultaneous equations, and about twice faster than the conventional method in computation speed. en-copyright= kn-copyright= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Communication Network Engineering affil-num=2 en-affil= kn-affil=Department of Communication Network Engineering en-keyword=finite field kn-keyword=finite field en-keyword=minimal polynomial kn-keyword=minimal polynomial en-keyword=irreducible polynomial kn-keyword=irreducible polynomial en-keyword=higher degree trace kn-keyword=higher degree trace en-keyword=trace kn-keyword=trace en-keyword=cryptography kn-keyword=cryptography END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=163 end-page=168 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Development of Assembly Robot System for Flexible Belt-Shaped Subject en-subtitle= kn-subtitle= en-abstract= kn-abstract=We develop an assembly robot system for assembling the flexible belt-shaped subject. An image processing method is developed to recognize the belt-shaped subject. This method is able to determine the grasping point and grasping angle for piking up a subject by a multiple hands unit. CAD information is used to determine the grasping point. The multiple hands unit is developed, which is able to grasp all grasping points of a subject at a time. In addition, the image processing method is used to judge whether a subject is fastened accurately at right position or not during the assembly. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UchiyamaHiromitsu kn-aut-sei=Uchiyama kn-aut-mei=Hiromitsu aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MiyazakiSatoshi kn-aut-sei=Miyazaki kn-aut-mei=Satoshi aut-affil-num=2 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=3 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=4 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=5 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MatsukiKatsunori kn-aut-sei=Matsuki kn-aut-mei=Katsunori aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering affil-num=5 en-affil= kn-affil=Department of Systems Engineering affil-num=6 en-affil= kn-affil=Uchiyama Manufacturing Corporation END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=47 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Diagnostic method for induction motor using simplified motor simulator en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, an identification method of motor parameters for the diagnosis of rotor bar defects in the squirrel cage induction motor is proposed. It is difficult to distinguish the degree of deterioration by a conventional diagnostic method such as Fourier analysis. To overcome the difficulty, a motor simulator is used to identify the degree of deterioration of rotors in the squirrel cage induction motor. Using this method, the deterioration of rotor bars in the motor can be estimated quantitatively. en-copyright= kn-copyright= en-aut-name=DoumaeYukihiro en-aut-sei=Doumae en-aut-mei=Yukihiro kn-aut-name=“°‘OsG kn-aut-sei=“°‘O kn-aut-mei=sG aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= en-aut-name=AsadaHideki en-aut-sei=Asada en-aut-mei=Hideki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KitamuraAkira en-aut-sei=Kitamura en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Graduate school of natural science and technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Kobe Steel, ltd. affil-num=5 en-affil= kn-affil=Kobe Steel, ltd. END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=1 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Direct Patterning of Ceramic Circuit Board with Q-Switched Nd:YAG Laser en-subtitle= kn-subtitle= en-abstract= kn-abstract=Direct patterning of copper coated ceramic circuit board is experimentally investigated with Q-switched Nd:YAG laser in order to shorten the time of the trial manufacture of electronic circuit board and to adapt the flexible design change. It is pointed out that the fast direct patterning the speed of which reaches about 100 mm/s is possible if the repetition frequency and the average power are selected properly. Furthermore cutting off and/or drilling of ceramic board are also possible under the condition that the repetition frequency is less than 3kHz. This technique makes it possible the mask1ess patterning of ceramic circuit board which has been widely used recently in place of conventional glass-epoxy or phenolic resin circuit board, and it leads to the shorter time limit of delivery as compared with the conventional end-milling method. en-copyright= kn-copyright= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KubotaShin-ichiro en-aut-sei=Kubota en-aut-mei=Shin-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NakajimaToshikatsu en-aut-sei=Nakajima en-aut-mei=Toshikatsu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OgataKojiro en-aut-sei=Ogata en-aut-mei=Kojiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TadaNobuhiko en-aut-sei=Tada en-aut-mei=Nobuhiko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Hitachi Construction Machinery Co., Ltd. affil-num=5 en-affil= kn-affil=Hitachi Construction Machinery Co., Ltd. END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=191 end-page=196 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Disassembly System using an Impact Hammer for the Material Recycling en-subtitle= kn-subtitle= en-abstract= kn-abstract=We developed the disassembly system that uses the impulsive load and disassembly tools to disassemble used appliances economically. The main components of this system are impulse hammer, a lift table and developed disassembly tools. Several types of disassembly tools are developed to punch out fastened portion on a part and cut off the shaft of screw or connection pin of IC-chip. A simulation model is proposed to explain and formulate how the fastening point of product is broken and cut. Three kinds of disassembly tools are designed. The actual disassembly system is developed by using proposed simulation models and disassembly tools. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YoshidaTakanobu kn-aut-sei=Yoshida kn-aut-mei=Takanobu aut-affil-num=1 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=2 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=3 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OhtaKazuharu kn-aut-sei=Ohta kn-aut-mei=Kazuharu aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering affil-num=5 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=8 end-page=15 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dispersion Models and Electromagnetic FDTD Analyses ofNanostructured Metamaterials using Parallel Computer en-subtitle= kn-subtitle= en-abstract= kn-abstract=Metamaterial which has negative permittivity and permeability is investigated via computer simulations. Effects of the nanostructure on dielectric and magnetic properties of the material are taken into account by introducing the Drude-Lorentz model in the materials dispersion. We include multi-band process in the dielectric response in order to reproduce accurately experimental values of bulk Au thin film. Size effect on the dispersion is examined by comparing the model with that of a noble metal particle. Based on the dispersion model constructed, we analyze the electromagnetic response of nanostructured metamaterials to evanescent waves at microwave and optical frequencies via finite-difference time-domain simulatioins on parallel computer. A re- focusing and an amplification of the evanescent waves propagating through a metamaterial, consisting of metal slab/vacuum stacking, is demonstrated for the frequencies of 30GHz and 744THz. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UmedaRyosuke kn-aut-sei=Umeda kn-aut-mei=Ryosuke aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=1 article-no= start-page=40 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Distribution of Electrons in Quantum Dots Analyzed by Classical Mapping and Molecular Dynamics en-subtitle= kn-subtitle= en-abstract= kn-abstract=The electron system of arbitrary degeneracy can be mapped onto a classical system where electrons of the same spin are assigned an additional interaction and the effect of degeneracy is taken into account through an imaginative temperature. We apply this method to electrons in quantum dots modeled as two-dimensional electron liquid confined in a finite domain by a harmonic potential. We analyze distribution functions by molecular dynamics instead of solving integral equations which are not so useful in the case without translational invariance. en-copyright= kn-copyright= en-aut-name=TakashiMiyake en-aut-sei=Takashi en-aut-mei=Miyake kn-aut-name=ŽO‘î—² kn-aut-sei=ŽO‘î kn-aut-mei=—² aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=87 end-page=128 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Drain System Around the Underground Cavern en-subtitle= kn-subtitle= en-abstract= kn-abstract=In recent years, construction or planning of large-scale underground structures, such as underground power plants, underground oil storage plants and nuclear power plants have been coming into consideration in Japan. To construct such as large-scale underground structures, one of the most important problems is to make clear beforehand the behavior of groundwater around these structures and the other is to carry out proper countermeasure of groundwater, so that these structures can be constructed safely and maintained stability over a long time period. This report describes the results of theoretical studies on the drain systems and at the same time, discusses the drain systems around the underground cavern for the practical underground power stations. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MotojimaIsao kn-aut-sei=Motojima kn-aut-mei=Isao aut-affil-num=1 ORCID= en-aut-name=KonoIichiro en-aut-sei=Kono en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=2 ORCID= en-aut-name=NishigakiMakoto en-aut-sei=Nishigaki en-aut-mei=Makoto kn-aut-name=¼Š_½ kn-aut-sei=¼Š_ kn-aut-mei=½ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Central Research Institute of Electric Power Industry affil-num=2 en-affil= kn-affil=Department of Civil Engineerig affil-num=3 en-affil= kn-affil=Department of Civil Engineerig END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=33 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Dynamical Properties of Two-Dimensional Yukawa Liquids: A Molecular Dynamics Study en-subtitle= kn-subtitle= en-abstract= kn-abstract=The dynamic structure factor and the spectrum of the momentum-density fluctuations of 2D Yukawa liquids are analyzed in the domain of weak and intermediate coupling and screenlng parameters. The dispersion relations of the longitudinal and transverse collective excitations are obtained and compared with the random phase approximation (RPA) and harmonic approximation for triangular lattice. en-copyright= kn-copyright= en-aut-name=LimanM. Sanusi en-aut-sei=Liman en-aut-mei=M. Sanusi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Facu.lty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Facu.lty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Facu.lty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=69 end-page=72 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Ecient Squaring Algorithm for Xate Pairing with Freeman Curve en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recently, pairing?based cryptographies have attracted much attention. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field should be efficient. Especially for final exponentiation included in pairing calculation, squaring is more important than multiplication. This paper proposes an efficient squaring algorithm in extension field for Freeman curve. en-copyright= kn-copyright= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=83 end-page=88 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Alcohol on Bioactivity of Glasses en-subtitle= kn-subtitle= en-abstract= kn-abstract=One of the CaO,SiO(2)-based bioactive glasses(5OCaO¥ 5OSiO (2) in mol%) were soaked for various periods in a simulated body fluid(SBF) with or without containing alcohols such as methanol, ethanol, and 1-propanol. Effect of the alcohols was investigated on the apatite formation on the glass surface with thin-film X-ray diffraction, FT-IR reflection spectroscopy and scanning electron microscopy. Under the presence of alcohols up to 0.1mol/l in the SBF an apatite layer was formed on the glass, while it consisted of crystallites similar in morphology but larger in size than that found for the SBF without the alcohols. It was concluded that the alcohols little influenced the the apatite forming ability of the CaO,SiO(2)-based glasses. en-copyright= kn-copyright= en-aut-name=TsuruKanji en-aut-sei=Tsuru en-aut-mei=Kanji kn-aut-name=“s—¯Š°Ž¡ kn-aut-sei=“s—¯ kn-aut-mei=Š°Ž¡ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishiyamaChikako kn-aut-sei=Nishiyama kn-aut-mei=Chikako aut-affil-num=2 ORCID= en-aut-name=OhtsukiChikara en-aut-sei=Ohtsuki en-aut-mei=Chikara kn-aut-name=‘å’ÎŽåÅ kn-aut-sei=‘å’Î kn-aut-mei=ŽåÅ aut-affil-num=3 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name=”öâ–¾‹` kn-aut-sei=”öâ kn-aut-mei=–¾‹` aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioengineering Science affil-num=2 en-affil= kn-affil=Department of Bioengineering Science affil-num=3 en-affil= kn-affil=Department of Bioengineering Science affil-num=4 en-affil= kn-affil=Department of Bioengineering Science END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Heat Treatment on the Serration of Low-Concentrated Al-Zn Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=The effect of heat-treatment conditions on occurrence of serration in Al-Zn alloys was investigated. Specimens were aged for various times up to 2.6Ms at 293K or 273K after quenching from various temperatures (T(Q)), 473K to 853K, and tensile-tested at room temperature. Serration occurred more easily according as T(Q) became lower and the aging time became shorter: in the case that T(Q)=473K serration was observed even after aging for 2.6Ms, while in the case that T(Q)=773K serration did not occur irrespective of aging conditions. Serration was also recognized when the specimens were furnace-cooled from 773K to room temperature. These results together with those obtained by the electrical resistometry suggest that the serration in the low'concentrated Al-Zn alloy is caused by the formation of small GP zones whose Guinier radius is less than 1nm or some sort of solute clusters. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TashiroTsutomu en-aut-sei=Tashiro en-aut-mei=Tsutomu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YoshiokaKazumi en-aut-sei=Yoshioka en-aut-mei=Kazumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Mechanical Engineering Okayama University affil-num=2 en-affil= kn-affil=Faculty of Engineering Okayama University of Science affil-num=3 en-affil= kn-affil=Faculty of Informatics Okayama University of Science affil-num=4 en-affil= kn-affil=Graduate School Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=1 article-no= start-page=15 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19901214 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Quenching Condition on the Growth of GP Zones in Al-lmass % Ag Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=Aging of Al-lmass % Ag alloy at 273K after quenching under various conditions was studied by measurement of electrical resistivity. Scattering of the quasi-equilibrium value of resistivity (p(e)) was not random but closely related to the as-quenched value (p(o)); P(e) increased with increasing p(o)' When the quenching temperature (T(q)) was lower than or equal to 773K, the state at p(e) was controlled substantially by the concentration of quenched vacancy. On the other hand, when T(q)>823K, GP zones formed during quenching played an important role, instead of quenched vacancies, in determining the state. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=1 end-page=4 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Solute Clusters on Low Temperature Aging in Dilute Al-Ag Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=Aging of diolute Al-Ag alloys after quenching from low temperatures were studied mainly by electrical resistometry. Maximum resistivity observed in the aging curve of specimens quenched from high temeperature disappeared when the quenching temperature was lowered to 473 or 453K. When the quenching temperature was lowered further to 423K or lower, however, maximum resistivity reappeared. At the temperature lower than or equal to 423K but higher than the GP zone solvus, the alloys were not homogeneous but had clusters of solute atoms or fluctuation of solute concentration. Inhomogeneous distribution of solute atoms may affect the aging behavior after quenching from that temperature. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Eengineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering, Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=1-2 article-no= start-page=13 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Specimen Thickness on Aging and Fatigue Strength of Al-Zn Alloys en-subtitle= kn-subtitle= en-abstract= kn-abstract=Repeated tensile fatigue strength of the low temperature age-hardened Al-Zn alloys is investigated varying the specimen thickness. Fatigue strength of the age-hardened specimens decreases with the specimen thickness when the specimen is thinner than a certain thickness, whereas fatigue strength of non age-hardened specimens, i.e., pure aluminum and dilute Al-Zn alloy, does not depend the specimen thickness. The dependence of fatigue strength on the thickness of age-hardened specimen is considered to be caused by the decrease of the strength of specimen as a whole, as a result of increase in volume ratio of the soft surface layer formed after age-hardening with decreasing specimen thickness. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=TanimotoTadashi en-aut-sei=Tanimoto en-aut-mei=Tadashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MatsushimaTakahisa en-aut-sei=Matsushima en-aut-mei=Takahisa kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HosokawaNorio en-aut-sei=Hosokawa en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering, Okayama University of Science affil-num=3 en-affil= kn-affil=Graduate School of Okayama University of Science (Present: Daiwabo Co., Ltd.) affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering, Okayama University of Science affil-num=5 en-affil= kn-affil=Department of Mechanical Engineering, Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=1 article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19911130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Surface and Grain Boundary on the Reversion of Age-Hardened Al-15mass % Zn Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=Reversion of the age-hardened Al-15mass % Zn alloy, in which ellipsoidal GP zones were formed, was investigated by hardness test. Ellipsoidal zones were reverted more quickly near the surface and grain boundary than in the interior, as spherical zones did. The results confirm their role as sources for vacancies in reversion. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=2 article-no= start-page=9 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of the Soft Surface Layer on Fatigue Strength of LowTemperature Aged Al-2mass % Cu Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fatigue strength of Al-Cu alloy was examined by a repeated tensile mode when the specimens were aged and reversion annealed. The specimen quenched from 723K and aged fully around room temperature showed fatigue strength which depended on the existence of soft layer, while the specimen quenched from 723K and aged in the same way showed fatigue strength independent of the existence of the soft layer. Fatigue strength of the specimen, of which the soft surface layer was removed, was the same for either quenching temperature. Fatigue strength became higher when the soft surface layer was thickened with reversion annealing for 600s at 323K after aging. The soft surface layer was thought to increase fatigue strength of the aged Al-Cu alloy as well as Al-Zn alloy. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical engineering affil-num=2 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=1 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effects of Drive System Lubricant Additives upon Rolling Fatigue of Carburized and Hardened Steel Rollers en-subtitle= kn-subtitle= en-abstract= kn-abstract=To clarify the effects of a drive system lubricant additive upon rolling fatigue of rollers manufactured from carburized and hardened steel, three types of oil were used as lubricants: one mineral base oil and the other two mineral base oils to which an S-P additive package and ATF additive package were added, respectively. These specimens were tested for sliding/rolling fatigue and examined for failure on the surface, rolling fatigue strength, and other properties. Roller surface temperatures and inter-roller frictional coefficients were found scarcely affected by the type of oil used. Irrespective of the difference in oil type, failure on the surface was found to be entirely spalling attributable to cracks generated in the subsurface. The depth at which spalling cracks had taken place was found nearly coincident with the depth at which a ratio of reversing orthogonal shear stress to hardness had amplitude A(Tyz/Hv) maximized. These depths were larger as Hertz stress became more prominent. Nevertheless, they were found hardly affected by the type of oil. Although rolling fatigue strength did not show a significant difference dependent upon the type of oil, it may be said that fatigue life would be somewhat negatively affected by an extreme pressure coated film with a content of sulfur and phosphorus. en-copyright= kn-copyright= en-aut-name=YoshidaAkira en-aut-sei=Yoshida en-aut-mei=Akira kn-aut-name=‹g“c² kn-aut-sei=‹g“c kn-aut-mei=² aut-affil-num=1 ORCID= en-aut-name=OhueYuji en-aut-sei=Ohue en-aut-mei=Yuji kn-aut-name=‘åã—SŽi kn-aut-sei=‘åã kn-aut-mei=—SŽi aut-affil-num=2 ORCID= en-aut-name=FujiiMasahiro en-aut-sei=Fujii en-aut-mei=Masahiro kn-aut-name=“¡ˆä³_ kn-aut-sei=“¡ˆä kn-aut-mei=³_ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=73 end-page=83 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effects of the Cultivation Method on the Characteristics or Gene Expression Profiles of Aspergillus oryzae Using mCD or DPY Media en-subtitle= kn-subtitle= en-abstract= kn-abstract=We used modified Czapek-Dox (mCD) or dextrin-peptone-yeast extract (DPY) media to cultivate a filamentous fungus, Aspergillus oryzae IAM 2706 by three different cultivation methods, i.e., shaking-flask culture (SFC), agar-plate culture (APC), and membrane-surface liquid culture (MSLC), to identify the differences in cultivation behaviors and gene transcriptional profiles. The fungi cultivated by APC or MSLC secreted a greater number of different proteins/enzymes in larger quantities compared with fungi cultivated by SFC, particularly when DPY medium was used. In particular, the amounts of protease secreted by fungi cultivated via MSLC or APC were much greater compared with SFC. When mCD medium was used, ƒ¿-amylase activity was barely detectable in all cultures while the activity was detected in MSLC and APC in a quantity that was several times higher than that in SFC using DPY medium. SDS-PAGE analysis and N-terminal amino acid sequences confirmed 6 proteins in the culture supernatants when DPY medium was used. Among these proteins oryzin (an alkaline protease) and ƒ¿-amylase were detected at much higher levels in APC and MSLC compared with SFC, which was consistent with the measured activity of the secreted enzymes. However, when mCD medium was used, only oryzin was detected in significant amounts in MSLC and APC. Microarray analyses of the fungi cultivated by SFC, APC or MSLC using either mCD or DPY media indicated that the gene transcriptional profile of the MSLC sample was similar to that of the APC sample but different from that of the SFC sample. When mCD medium was used, most of the genes that were up-regulated 10-folds or greater in the MSLC sample relative to the SFC sample were unknown or predicted proteins. Transcription of the oryzin gene was only slightly up-regulated in the MSLC sample while transcription of the ƒ¿-amylase gene was slightly down-regulated. On the other hand, when DPY medium was used, many known genes including the oryzin gene were up-regulated in the MSLC sample versus the SFC sample. en-copyright= kn-copyright= en-aut-name=ImanakaHiroyuki en-aut-sei=Imanaka en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TanakaSoukichi en-aut-sei=Tanaka en-aut-mei=Soukichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=FengBin en-aut-sei=Feng en-aut-mei=Bin kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ImamuraKoreyoshi en-aut-sei=Imamura en-aut-mei=Koreyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=NakanishiKazuhiro en-aut-sei=Nakanishi en-aut-mei=Kazuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University affil-num=5 en-affil= kn-affil=Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=46 end-page=51 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electron Dynamics in Semiconducting Nanowires: A Real-Space,Polynomial-Expansion Approach en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a real-space, polynomial-expansion approach to electron dynamics in nanostructured semiconductors. The Chebyshev expansion method is employed for efficient calculation of timeevolution of single-electron wave function. Details of the formulation are described. The method is applied to the electron transport in nanostructured semiconductors such as Si nanowires. The mean-square displacement and diffusivity of electron in Si chains are obtained as functions of length of the chains. The results show clearly ballistic behavior of electron in the pure Si chain. en-copyright= kn-copyright= en-aut-name=KadonoKeisuke en-aut-sei=Kadono en-aut-mei=Keisuke kn-aut-name=–å–ìŒb“T kn-aut-sei=–å–ì kn-aut-mei=Œb“T aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=65 end-page=79 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electronic States and Electron Wave Transfer in Coupled Quantum Wires and Its Control by Externally Applied Electric Field en-subtitle= kn-subtitle= en-abstract= kn-abstract=Quantum mechnical electron wave transfer between two quantum wires which are weakly coupled via a thin potential barrier is considered. The total electronic states are calculated with both analytical ( no field case ) and numerical methods ( under applied electric fields ). The transfer efficiency is evaluated for several specified cases of geometrical structures, potential barrier heights and the externally applied electric field. Estimated trasfer time is of the order of one picosecond in typical mesoscopic structures. The model in this paper can be used to determine important structure parameters for experiments on electron directional coupler controled by external elctric field. en-copyright= kn-copyright= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HaraYuji kn-aut-sei=Hara kn-aut-mei=Yuji aut-affil-num=2 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Sharp Corporation affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=1 article-no= start-page=7 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19941130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electronic States in Semiconductor Quantum Dot with Fluctuating Interfaces en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of interface fluctuations on the electronic states in semiconductor quantum dots are analyzed on the basis of numerical solutions for ground state wave functions and energy eigenvalues. It is shown that the effective volume of confinement becomes smaller than the real volume of quantum dots due to fluctuation. This effect comes from the fact that the wave functions with larger characteristic wavelength are not able to deform themselves following the fluctuation of interfaces exactly. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HiroyukiTachibana kn-aut-sei=Hiroyuki kn-aut-mei=Tachibana aut-affil-num=1 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=2 ORCID= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=3 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=89 end-page=97 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Electronic Structure of Mixed Perovskite Oxides en-subtitle= kn-subtitle= en-abstract= kn-abstract=Based on the tight-binding method, electronic bands of the mixed perovskite oxides are calculated in order to develop the electronic theory of ferroelectric phase transitions in these mixtures which are difficult to describe within the phenomenological theories. Diagonal elements of Hamiltonian matrix of parent materials are assumed to differ by 0.1eV and mixtures are simulated by lattices of supercells containing 2(3) = 8 or 3(3) = 27 unit cells randomly assigned to either material. The width of the conduction and valence bands have maxima and the band gap has a minimum at intermediate mixing ratio. Results are in agreement with those of other analyses on random systems and even 2(3)-cell computation seems to serve as a first approximation for our purpose. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SanakaYoshiaki kn-aut-sei=Sanaka kn-aut-mei=Yoshiaki aut-affil-num=2 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=1-2 article-no= start-page=19 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Energy Distribution in Electrical Discharge Machining with Graphite Electrode en-subtitle= kn-subtitle= en-abstract= kn-abstract=In EDM, the machining characteristics greatly depend on the energy distribution. Therefore, it is very important to clarify the energy distribution for understanding various phenomena in EDM. In this paper, the energy distribution in EDM with graphite electrode is investigated by measuring the temperatures of electrode and workpiece. Experimental analysis shows that the material removal rate depends on energy density while the electrode wear greatly depends on the adhesion of heat resolved carbon from machining fluid, and the energies distributed into electrode and workpiece are almost constant regardless of pulse duration. en-copyright= kn-copyright= en-aut-name=OkadaAkira en-aut-sei=Okada en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkajimaIsao en-aut-sei=Okajima en-aut-mei=Isao kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=29 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Body Structure by Biomechanical Impedance en-subtitle= kn-subtitle= en-abstract= kn-abstract=In the stiffness evaluation from the skin surface, the body structure under the skin, like a bone and muscle, influences on the measurement results. The authors developed the measurement system of biomechanical impedance with applying a vibration of acoustic frequency onto the body surface. We measured the viscoelasticity of the silicone-gel model, which involves metal blocks, from the gel surface by using this system. The internal structure of model is estimated from the relation between the viscoelasticity and the distance from the gel surface to the internal block. Applying this method, the shape of ribs of the right chest are estimated. The shapes and viscoelasticity of silicone-gel tumor model, which has two different tumors, are also estimated. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=FukudaTakashi en-aut-sei=Fukuda en-aut-mei=Takashi kn-aut-name=•Ÿ“cŒh kn-aut-sei=•Ÿ“c kn-aut-mei=Œh aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=2 article-no= start-page=45 end-page=60 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200303 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Ground Resisitivity Distribution Using 3D DRM Charge Simulation Modelling en-subtitle= kn-subtitle= en-abstract= kn-abstract=Resistivity distribution sounding of the non-homogeneous earth is important for electrical ground system design, geophysical prospecting and survey or monitoring the groundwater flow level. The previous paper presented that the direct inversion of the electric resistivity distribution in a domain is possible from the impedance data measured over the domain boundary using the dual reciprocity boundary element modelling in two-dimentional field [1]. The proposed inversion technique is extended to the distribution in three-dimensional space [2]. This technique is capable of inversion without iteration and meshing of the domain. Electric field with spatially varying conductivity is governed by Laplace equation, which is transformed into a Poisson-type expression with an inhomogeneous term involving the conductivity difference as a source term. Dual reciprocity method (DRM) is a technique for transforming the domain integral associated with the inhomogeneous term in Poisson equation into the boundary integral expression. The resistivity distribution in the field can thus be identified from the data observed over its boundary, for which some examples are demonstrated [2]. In this paper, the examination is extended to the case where only the data measured over the single surface is used for the inversion. en-copyright= kn-copyright= en-aut-name=XuWei en-aut-sei=Xu en-aut-mei=Wei kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ZhaoY. en-aut-sei=Zhao en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HorikaneT. en-aut-sei=Horikane en-aut-mei=T. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HayataT. en-aut-sei=Hayata en-aut-mei=T. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TosujiH. en-aut-sei=Tosuji en-aut-mei=H. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=KagawaY. en-aut-sei=Kagawa en-aut-mei=Y. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering, Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering, Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering, Okayama University affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering, Okayama University affil-num=5 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering, Okayama University affil-num=6 en-affil= kn-affil=Dept. of Electronics and Information Systems, Akita Prefectural Univ. END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=21 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Internal Viscoelasticity by Mechanical Impedance en-subtitle= kn-subtitle= en-abstract= kn-abstract=In evaluating the stiffness of skin surface, internal structures such as bone and muscle often affect the measurements. In the present paper, acoustic random vibration is used to estimated the viscoelasticity of a silicone-gel model. This viscoelasticity, which includes two different stiffness strata, is first estimated using a mechanical impedance spectrum, which describes the relation between the depth and viscoelasticity of internal objects. This method is applied to the depth of a silicone-gel tumor model measured by ultrasound imaging and the viscoelasticity of internal gel can be accurately estimated. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=NakamuraTakahiko en-aut-sei=Nakamura en-aut-mei=Takahiko kn-aut-name=’†‘º‹M•F kn-aut-sei=’†‘º kn-aut-mei=‹M•F aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=29 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Loosening of Knee Joint Prosthesis en-subtitle= kn-subtitle= en-abstract= kn-abstract=Knee replacement arthroplasty is indicated for the patient with advanced knee pain, knee deformation, and knee functional disorder. The aim of this study was to estimate loosening after a knee replacement arthroplasty. Loosening is measured by a frequency response function, and mobility by random vibration. The modal parameters for the knee joint are obtained by applying a modal analysis to the frequency response function. The values decrease as the knee joint prosthesis loosened. These parameters serve as an index for the condition between a thighbone and the prosthesis. The various indexes will greatly clarify the stage of advance in the loosening of knee-joint prostheses. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=OhshimaMasakazu en-aut-sei=Ohshima en-aut-mei=Masakazu kn-aut-name=‘哇³˜a kn-aut-sei=‘哇 kn-aut-mei=³˜a aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=2 article-no= start-page=15 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of Muscle Fatigue of Low Back upon the Muscle Stiffness en-subtitle= kn-subtitle= en-abstract= kn-abstract=An estimation of muscle fatigue is very important study and many laboratory researchers had done actively in this field. The excellent measurement and analysis methods, however, have not established yet. The aim of this study was to investigate the muscle fatigue of low back, caused by sitting on the vehicle seat for a long time. The muscle viscoelasticity and the EMG (Electromyogram) were measured. The authors proposed the objective muscle fatigue index that was obtained from the result of PCA (Principal Component Analysis) by using the measured varlables. The objective muscle fatigue index suggests an adequate correlation with the subjective fatigue on the vehicle seat. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=FujiwaraShiro en-aut-sei=Fujiwara en-aut-mei=Shiro kn-aut-name=“¡Œ´Žj˜N kn-aut-sei=“¡Œ´ kn-aut-mei=Žj˜N aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=1 article-no= start-page=11 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200211 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Estimation of the screening length and the electric charge on particles in single-layered dusty plasma crystals en-subtitle= kn-subtitle= en-abstract= kn-abstract=A theoretical approach which has been successful in reproducing results of molecular-dynamics simulations on dusty plasmas is applied to estimate the screening length and the electric charge of two-dimensional dust crystals of melamine particles in the discharge chamber experiment. It has been found that the screening length is of the same order of magnitude as the inter-particle distance and the electric charge decreases on increasing number density of dust particles. en-copyright= kn-copyright= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=LimantMuhammad S. en-aut-sei=Limant en-aut-mei=Muhammad S. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering Faculty of Engineering, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=1 article-no= start-page=79 end-page=90 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation and Selection of Models for Motion Segmentation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We first present an improvement of Kanatani's subspace separation [8] for motion segmentation by newly introducing the affine space constraint. We point out that this improvement does not always fare well due to the effective noise it introduces. In order to judge which solution to adopt if different segmentations are obtained, we present two criteria: one is the standard F test; the other is model selection using the geometric AIC of Kanatani [7] and the geometric MDL of Matsunaga and Kanatani [13]. We test these criteria doing real image experiments. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=1 article-no= start-page=91 end-page=106 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation and Selection of Models for Motion Segmentation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a theoretically optimal linear algorithm for 3-D reconstruction from point correspondences over two views. We also present a similarly constructed optimal linear algorithm for 3-D reconstruction from optical flow. We then compare the performance of the two algorithms by simulation and real-image experiments using the same data. This is the first impartial comparison ever done in the sense that the two algorithms are both optimal, extracting the information contained in the data to a maximum possible degree. We observe that the finite motion solution is always superior to the optical flow solution and conclude that the finite motion algorithm should be used for 3-D reconstruction. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OhtaNaoya en-aut-sei=Ohta en-aut-mei=Naoya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science Gunma University END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=49 end-page=55 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation of Eigenmodes of Dielectric Waveguides by a Numerical Method Based on the BPM en-subtitle= kn-subtitle= en-abstract= kn-abstract=For weakly guiding dielectric waveguides, the eigenmode field distributions are calculated numerically with a simple algorithm. In this numerical method, the transverse sampling space can be chosen arbitrarily, and hence a narrow waveguide can be analyzed. The field satisfying scalar wave equation is expressed by the discrete Fourier transform and the mode eigenvalues and eigenfunctions are calculated by solving an eigenvalue equation numerically. The validity of this method is checked for 2-D waveguides having step and parabolic or square index distributions. It is found that for the well guided TE modes of the slab waveguide, the accuracy of this method is remarkably good, but some discrepancies are found if the mode is near cut off. In the problems where the normalized guide index b is small, caution should be taken in applying the results of this numerical method. en-copyright= kn-copyright= en-aut-name=AhmedAnis en-aut-sei=Ahmed en-aut-mei=Anis kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TaniguchiShinji en-aut-sei=Taniguchi en-aut-mei=Shinji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=3 ORCID= en-aut-name=WangMing en-aut-sei=Wang en-aut-mei=Ming kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Fujitsu Laboratories Ltd. affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=5 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=61 end-page=69 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Evaluation of closed-form analytical models for predicting unsaturated soil hydraulic properties en-subtitle= kn-subtitle= en-abstract= kn-abstract=Knowledge of the unsaturated soil hydraulic properties is essential requirement for prediction of seepage flow and contaminant transport through the vadose zone. Unfortunately, these parameters are usually time consuming and expensive to measure in the field and laboratory. At the present condition, there are few data accumulation for Japanese soils. In this paper, van Genuchten's closed-form expressions are described to estimate unsaturated soil hydraulic properties. To evaluate the adequacy of these expressions, comparisons are performed between observed and calculated unsaturated hydraulic properties for typical Japanese soils. en-copyright= kn-copyright= en-aut-name=TakeshitaYuji en-aut-sei=Takeshita en-aut-mei=Yuji kn-aut-name=’|‰º—S“ñ kn-aut-sei=’|‰º kn-aut-mei=—S“ñ aut-affil-num=1 ORCID= en-aut-name=KohnoIichiro en-aut-sei=Kohno en-aut-mei=Iichiro kn-aut-name=‰Í–ìˆÉˆê˜Y kn-aut-sei=‰Í–ì kn-aut-mei=ˆÉˆê˜Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=99 end-page=110 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental Collimation of Cerenkov SHG Blue Laser Beam with a Cylindric Mirror en-subtitle= kn-subtitle= en-abstract= kn-abstract=A cylindric mirror was used, in place of a parabolic mirror, to collimate the crescent blue laser beam radiated from the Cerenkov SHG in channel waveguide configuration. The cylindric mirror radius is requested to be twice the focal length of the parabolic mirror. The focusing effect of the cylindric mirror in collimation can be compensated by slightly lifting the mirror in its normal direction. Under the condition that the mirror was declined by 5.56‹ and lifted by 25 ƒÊm, we got the@collimated beam with divergence angle less than 1.3 mrad. In the focusing experiment, the collimated beam was focused with spotsize of 1.8 ƒÊm. The details on the analysis and experiment are reported. en-copyright= kn-copyright= en-aut-name=WangMing en-aut-sei=Wang en-aut-mei=Ming kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=2 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduated School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=27 end-page=31 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental Conditions for Observation of ThermodynamicInstability and Critical Point of Fine Particle (Dusty) Plasmas en-subtitle= kn-subtitle= en-abstract= kn-abstract=When the Coulomb coupling between fine particles becomes sufficiently strong in fine particle plasmas, the isothermal compressibility of the whole system diverges and we have a phase separation and an associated critical point. Experimental conditions of fine particle plasmas, densities and temperatures of components and the fine particle size, are obtained corresponding to characteristic parameters around the critical point and the dependency on ion species and other factors is discussed. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=63 end-page=72 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental Evaluation of Geometric Fitting Algorithms en-subtitle= kn-subtitle= en-abstract= kn-abstract=The convergence performance of typical numerical schemes for geometric fitting for computer vision applications is compared. First, the problem and the associated KCR lower bound are stated. Then, three well known fitting algorithms are described: FNS, HEIV, and renormalization. To these, we add a special variant of Gauss-Newton iterations. For initialization of iterations, random choice, least squares, and Taubinfs method are tested. Numerical simulations and real image experiments and conducted for fundamental matrix computation and ellipse fitting, which reveals different characteristics of each method. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name=›’J•Û”V kn-aut-sei=›’J kn-aut-mei=•Û”V aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=2 article-no= start-page=83 end-page=89 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200203 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental Verification of Common-Mode Excitation Model for PCB Having Partially Narrow Return Path en-subtitle= kn-subtitle= en-abstract= kn-abstract=Suppression of common-mode current is important to achieve electromagnetic compatibility of high-speed and high-density electronic circuits. The authors have focused on the common mode current flowing on a printed circuit board (PCB) to explain the excitation mechanism. A narrow ground pattern in microstrip structure excites common-mode current. In the previous paper, the authors explained the mechanism of common mode generation by means of "current division factor" for simple PCBs. The estimated radiation from a simple PCB agreed well with measured one. In this paper, the authors extend the theory to be applied to generalize ground structure. The validity of the theory is confirmed by comparing the measured radiation and the estimated value using the common-mode model for a test PCB. The estimated radiation agrees well with the measured one within 3 dB up to 900 MHz. en-copyright= kn-copyright= en-aut-name=WatanabeTetsushi en-aut-sei=Watanabe en-aut-mei=Tetsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ToyotaYoshitaka en-aut-sei=Toyota en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=MiyashitaTakuya en-aut-sei=Miyashita en-aut-mei=Takuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=4 en-affil= kn-affil=Department of Communication Network Engineering Okayama University affil-num=5 en-affil= kn-affil=Computer Center Okayama University END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=1 article-no= start-page=27 end-page=41 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19911130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Experimental and Theoretical Study on a Transient, Turbulent Free Hydrogen Gas Jet Issuing into Still Air en-subtitle= kn-subtitle= en-abstract= kn-abstract=Distributions of hydrogen gas concentration in a suddenly started, single shot hydrogen gas jet issuing from a 1 mm diameter injector into still air were measured using laser interferometry method. This unsteady, turbulent free jet flow has also been calculated using the two-equation, high Reynolds number version of k-ƒÃ turbulence model and hybrid scheme for treating combined diffusion and convection in the SIMPLE algorithm. The injection pressure was 0.5 MPa for which predicted and measured temporal jet tip penetration distributions indicate that the jet discharged into still air at Mach 0.25. The level of agreement between present prediction and measurement is good in some regions and poor in others. en-copyright= kn-copyright= en-aut-name=TomitaEiji en-aut-sei=Tomita en-aut-mei=Eiji kn-aut-name=•y“c‰h“ñ kn-aut-sei=•y“c kn-aut-mei=‰h“ñ aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NsungeFelix Chintu kn-aut-sei=Nsunge kn-aut-mei=Felix Chintu aut-affil-num=2 ORCID= en-aut-name=HamamotoYoshisuke en-aut-sei=Hamamoto en-aut-mei=Yoshisuke kn-aut-name=•l–{‰Ã•ã kn-aut-sei=•l–{ kn-aut-mei=‰Ã•ã aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Mechanical Engineering affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and TechnologyEngineering affil-num=3 en-affil= kn-affil=Dept. of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=108 end-page=112 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Extension Field for Xate Pairing with Freeman Curve en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recently, pairing-based cryptographies such as ID-based cryptography and group signature have been studied. For fast pairing calculation, not only pairing algorithms but also arithmetic operations in extension field must be efficiently carried out. The authors show efficient arithmetic operations of extension field for Xate pairing especially with Freeman curve. en-copyright= kn-copyright= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=56 end-page=62 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Extracting Moving Objects from a Moving Camera VideoSequence en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a new method for extracting objects moving independently of the background from a video sequence taken by a moving camera. We first extract and track feature points through the sequence and select the trajectories of background points by exploiting geometric constraints based on the affine camera model. Then, we generate a panoramic image of the background and compare it with the individual frames. We describe our image processing and thresholding techniques. en-copyright= kn-copyright= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name=›’J•Û”V kn-aut-sei=›’J kn-aut-mei=•Û”V aut-affil-num=1 ORCID= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Information Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=FDTD Analysis on Optical Connement Structurewith Electromagnetic Metamaterial en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we investigate a light-confinement phenomenon in the structure which has triangular latice composed of Double NeGative Metamaterial (DNGM). In geometrical optics consideration, this structure is expected to confine lights completely by sequential refractions in the structure. We demonstrate it by using the two dimensional finite-difference time-domain simulations. We introduce Drude-Lorentz model for dielectric and magnetic dispersion of the material at optical frequencies. We analyze quantitatively the effects of energy loss in the DNGM on the light-confinement efficiency. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NagaiShinji kn-aut-sei=Nagai kn-aut-mei=Shinji aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=UmedaRyosuke kn-aut-sei=Umeda kn-aut-mei=Ryosuke aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=16 end-page=21 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=FDTD Simulations of Acoustic Waves in Two-DimensionalPhononic Crystals using Parallel Computer en-subtitle= kn-subtitle= en-abstract= kn-abstract=The finite-difference time-domain (FDTD) method has been applied to the calculation of the phonon band structure of two-dimensional (2D) phononic crystals, consisting of metal cylinders placed periodically in liquid. By comparing several combinations of materials for metal cylinder and liquid, we analyze the dependence of the band structures on sound speed and density of liquid media. Moreover, the negative refraction of the acoustic waves is observed at the interfaces between phononic crystal slab and the liquid. We find that an acousticglens effecthwith the slab appears due to the negative refractions. The relationship between the focal intensity in the lens effect and the band structure is discussed. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KuroseTomoyuki kn-aut-sei=Kurose kn-aut-mei=Tomoyuki aut-affil-num=1 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=1 article-no= start-page=21 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19911130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Facilitated Diffusion of Carbon-Dioxide in a Living Body Liquid Film en-subtitle= kn-subtitle= en-abstract= kn-abstract=A numerical study is performed for the facilitated diffusion of carbon-dioxide in an ultrapure water film flowing downward along a vertical surface. The model adopted for the present work includes the effects of the reaction rate for the hydration of CO(2)in a liquid. Comparison of the total concentration of CO(2) for different film thickness indicates that the effects of the hydration is more remarkable for the thinner liquid film. en-copyright= kn-copyright= en-aut-name=NozuShigeru en-aut-sei=Nozu en-aut-mei=Shigeru kn-aut-name=–ì’ÃŽ  kn-aut-sei=–ì’à kn-aut-mei=Ž  aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=59 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Facility Layout Linked with Scheduling Problem by Genetic Algorithm and Tabu Search en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose a method to solve simultaneously facility layout problem and scheduling problem. About a initial random layout planning, the production scheduling and the transportation scheduling of AGV are obtained by using priority rules. From the obtained transportation scheduling, the critical transportation and the closeness rating are obtained. Facility layout is renewed by the combined procedure of genetic algorithm and tabu search in order to reduce the material handling cost. By using this renewed facility layout, the production scheduling and the transportation scheduling of AGV are also revised until no further improvement is possible. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujiharaYutaka kn-aut-sei=Fujihara kn-aut-mei=Yutaka aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Matsue National College of Technology, Department of Control Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=61 end-page=71 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Factorization without Factorization: Complete Recipe en-subtitle= kn-subtitle= en-abstract= kn-abstract=The Tomasi-Kanade factorization for reconstructing the 3-D shape of the feature points tracked through a video stream is widely regarded as based on factorization of a matrix by SVD (singular value decomposition). This paper points out that the core principle is the affine camera approximation to the imaging geometry and that SVD is merely one means of numerical computation. We first describe the geometric structure of the problem and then give a complete programming scheme for 3-D reconstruction. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Information Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=34 cd-vols= no-issue=1-2 article-no= start-page=1 end-page=12 dt-received= dt-revised= dt-accepted= dt-pub-year=2000 dt-pub=20000327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Falling Snow Melting Characteristics of Warm Water Flowing along Sheet Channels Spread on a Roof en-subtitle= kn-subtitle= en-abstract= kn-abstract=The experiment for investigating the falling snow melting characteristics of warm water flowing along sheet channels spread on a roof was performed in Tookamachi city, Nigata prefecture from February 6 to February 7, 1995. The sheet surface temperatures at 11 positions in 3 channels were measured. A physical model for a gas-water-snow system was constructed to compare the predicted results with the measured ones. A fully spread uniform water film in the sheet channel was observed in the experiments. The experimental results elucidated that it was feasible to use warm water flowing along sheet channels for melting falling snow on roofs. The temperature drop in the sheet channel mainly depended on the snowfall intensity, atmospheric temperature and wind speed. Under the influence of the roof edge, the temperature drop in the channel next to the side edge was much larger than that in middle channels. A water-snow two phase flow or a snow covered frozen water was experienced temporarily in the lower reaches of the water flowing channel. These suggest that a larger water flow rate is needed for the channel next to the roof edge, and a higher inlet temperature or a greater water flow rate is required for a severe weather condition. There was reasonably good agreement between the measured and predicted water temperatures. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SongBaoyin kn-aut-sei=Song kn-aut-mei=Baoyin aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= en-aut-name=HoribeAkihiko en-aut-sei=Horibe en-aut-mei=Akihiko kn-aut-name=–x•”–¾•F kn-aut-sei=–x•” kn-aut-mei=–¾•F aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiTakashi kn-aut-sei=Takahashi kn-aut-mei=Takashi aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=4 en-affil= kn-affil=Patedision Co. Ltd. END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=36 end-page=43 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fast Exponentiation in Extension Field with Frobenius Mappings en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper proposes an exponentiation method with Frobenius mappings. Our method is closely related to so-called interleaving exponentiation. Different from the interleaving exponentiation methods, our method can carry out several exponentiations using same base at the same time. The efficiency to use Frobenius mappings for an exponentiation in extension field is well introduced by Avanzi and Mihailescu. This exponentiation method is based on so-called simultaneous exponentiation and uses many Frobenius mappings. Their method more decreased the number of multiplications; however, the number of Frobenius mappings inversely increased. Compared to their method , the number of multiplications needed for the proposed method becomes about 20% larger; however, that of Frobenius mappings becomes small enough. en-copyright= kn-copyright= en-aut-name=KatoHidehiro en-aut-sei=Kato en-aut-mei=Hidehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MorikawaYoshitaka en-aut-sei=Morikawa en-aut-mei=Yoshitaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University en-keyword=exponentiation kn-keyword=exponentiation en-keyword=Frobenius mapping kn-keyword=Frobenius mapping en-keyword=extension field kn-keyword=extension field END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=1 article-no= start-page=1 end-page=8 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fatigue Crack Propagation Behavior Bent from Precrack under Mixed-Mode Conditions - Noting the Crack-Surface Contact due to a Compressive Residual Stress along a Precrack - en-subtitle= kn-subtitle= en-abstract= kn-abstract=A testing for bent fatigue crack propagation under mixed-mode conditions was carried out using fatigue and annealed slant precracks with different slant angles, ƒÀ ,defined as the angle between loading and precrack directions in a rectangular plate. As a result, bent fatigue crack from the fatigue precrack with ƒÀ =45deg. propagated under mixed-mode conditions with mode II stress intensity factor (K(II))(est) evaluated from the discontinuous displacement measured along the crack. On the other hand, bent fatigue crack from the fatigue precrack with ƒÀ =60deg. and from the annealed precracks with both slant angles of ƒÀ =60deg. and ƒÀ =45deg. propagated under the mode I behavior. This was because the compressive residual stress near the fatigue precrack caused contact to each other between the upper and the lower surfaces of the precrack with the smaller slant angle ƒÀ . Furthermore, the fatigue crack propagation rates indicated almost the same relationship for all the data, using the mixed-mode effective stress intensity factor (K(M))(est), calculated from the discontinuous displacement measured along the bent fatigue crack. en-copyright= kn-copyright= en-aut-name=MaYouLi en-aut-sei=Ma en-aut-mei=YouLi kn-aut-name=”n—L— kn-aut-sei=”n kn-aut-mei=—L— aut-affil-num=1 ORCID= en-aut-name=ShimizuKenichi en-aut-sei=Shimizu en-aut-mei=Kenichi kn-aut-name=´…Œ›ˆê kn-aut-sei=´… kn-aut-mei=Œ›ˆê aut-affil-num=2 ORCID= en-aut-name=ToriiTashiyuki en-aut-sei=Torii en-aut-mei=Tashiyuki kn-aut-name=’¹‹‘¾Žn”V kn-aut-sei=’¹‹ kn-aut-mei=‘¾Žn”V aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Sciences The Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=104 end-page=109 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fatigue Crack Propagation Evaluated by Electric Resistance and Ultrasonics in Copper Film Bonded to Base Metal with Resin en-subtitle= kn-subtitle= en-abstract= kn-abstract=As model specimens of surface film-bonded materials, pure copper films with a thickness of 100ƒÊm were bonded to the surface of steel base with epoxy resin, where the tensile residual stress was measured by an X-ray on the surface copper film. The distribution of initial electric resistance was measured on both copper film and base specimen by a direct current potential drop technique. As a result, there was a good agreement between the measured and theoretical values. From the fatigue testing results, it was shown that the measured electric resistance increased with the fatigue crack length on the copper film, which was almost equal to the theoretical value calculated for a central slit in a plate with finite width. This was probably because the fatigue crack was opened due to the tensile residual stress on the film even under unloading condition. In addition, the internal crack length during fatigue was examined by ultrasonic testing for the film-bonded specimen. As a result, there was a difference in the fatigue crack length between the surface copper film and the inner base. en-copyright= kn-copyright= en-aut-name=DonghuiMA en-aut-sei=Donghui en-aut-mei=MA kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=ToriiTashiyuki en-aut-sei=Torii en-aut-mei=Tashiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ShimizuKenichi en-aut-sei=Shimizu en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MatsubaAkira en-aut-sei=Matsuba en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate student, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Hiroshima Prefectural Technology Research Institute END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=17 end-page=23 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fatigue Strength of Age-Hardened Al-Zn Alloys under Repeated Tensile Loading en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effect of the soft surface layer that was formed on low temperature aging of Al-Zn alloy on fatigue strength was studied under repeated tensile loading. Vickers microhardness test revealed that there existed less hardened region in the vicinity of grain boundary and surface, and that the region extends 50 to 100ƒÊm from the surface inward. From the plot of the stress amplitude against the number of cycles to failure, it is concluded that the presence of less hardened surface layer strengthens fatigue resistance of the age hardened Al-Zn alloys containing 8 to 16mass % Zn under the repeated tensile loading. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KaneedaToshiaki en-aut-sei=Kaneeda en-aut-mei=Toshiaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=HosokawaNorio en-aut-sei=Hosokawa en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science affil-num=3 en-affil= kn-affil=Okayama University of Science affil-num=4 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=15 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Feature Extraction and Classification of Operational Data for Diagnosis of Hot Strip Mill Looper Control en-subtitle= kn-subtitle= en-abstract= kn-abstract=In these days, mechanical systems are becoming more complex and highly automated. So, there exist wide variety of demands for reliable diagnostic technology. A reliable data analysis and quantitative diagnosis method of mechanical system is necessary for the purpose. In this paper a quantitative diagnosis method for looper height control system has been developed based on neural network technologies. The wavelet transformation is used for pre-processing to analyze characteristics of looper height control system. And, self organizing map neural network is used for the purpose of classification based on the pre-processed data. After that, the classified results are used for quantitative diagnosis in hierarchical neural network. en-copyright= kn-copyright= en-aut-name=TorigoeTakashi en-aut-sei=Torigoe en-aut-mei=Takashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=17 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Film Continuity Problem on Journal Bearing Design en-subtitle= kn-subtitle= en-abstract= kn-abstract=Pressure distribution has been measured and analyzed to clarify the fundamental characteristics of "continuous oil-film" formed in a transparent journal bearing, into which oil in general use is supplied. Measured pressure mostly shows quasi-Sommerfeld distribution, which is characterized by downstream shift of pressure profile and underdevelopment of pressure trough compared with Sommerfeld distribution for perfect oil-film. Sommerfeld distribution is approximately observed only under limited conditions : low eccentricity and low speed. Quasi-Sommerfeld state is rather common in "continuous oil-film", unruptured film formed by using practical lubricants, than Sommerfeld state. Continuous oil-film is accompanied by fine bubbles and is controlled by the growing up or down of the bubbles. en-copyright= kn-copyright= en-aut-name=KonishiTadataka en-aut-sei=Konishi en-aut-mei=Tadataka kn-aut-name=¬¼’‰F kn-aut-sei=¬¼ kn-aut-mei=’‰F aut-affil-num=1 ORCID= en-aut-name=BabaMitsuru en-aut-sei=Baba en-aut-mei=Mitsuru kn-aut-name=”nê[ kn-aut-sei=”nê kn-aut-mei=[ aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=1 end-page=9 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fine Particles of Ti and Ti-Mo Alloy Prepared by Gas Evaporation en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fine particles of Ti-Mo alloy were prepared by evaporation. When Ti-40at % Mo alloy was evaporated on tungsten filament, fine particles of Ti contaminated with W were obtained. These particles were polyhedron in shape and 10`250nm in diameter. Average diameter and size distribution increased with pressure of argon gas (100`600 Torr). When pure Ti was placed on the Mo filament and evaporated from melt down of heated Mo filament in helium gas, fine particles of pure Ti and of Ti-Mo alloy were obtained. In this case, Ti particles were of indeterminate form and of several tens nm in diameter, and their diffraction pattern was of common ƒ¿-Ti. On the other hand, composition of the Ti-Mo particles was determined to be 18at % Mo by an analysis of EDX. Structure of Ti-Mo particles could not be determined because their diameters were more than 600nm. The temperature of Mo filament, for the most part, was about 1800Ž, and there pure Ti particles were produced. The temperature of the fused part of the filament was locally higher than 2600Ž, and there Ti-Mo particles were produced. Fine structures of contact region among some Ti particles were observed with HRTEM. en-copyright= kn-copyright= en-aut-name=UmemotoMasayuki en-aut-sei=Umemoto en-aut-mei=Masayuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=’|Œ³‰Ã—˜ kn-aut-sei=’|Œ³ kn-aut-mei=‰Ã—˜ aut-affil-num=2 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=3 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=”ò“cŽçF kn-aut-sei=”ò“c kn-aut-mei=ŽçF aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=63 end-page=73 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Finite Element Analysis of Open-type Dielectric / Optical Waveguides en-subtitle= kn-subtitle= en-abstract= kn-abstract=Optical fibers or integrated optical waveguides have arbitrary cross-sectional index or refraction distribution. An efficient finite element method for analyzing the propagation characteristics of dielectric / optical waveguides with open boundary is presented. The propagation modes are hybrid, for which a variational expression is formulated in terms of the longitudinal electric and magnetic field components. Infinite elements are introduced to consider open boundary or to extend the region to infinity. Several specific examples are given and the results are compared with those obtained by other approximate methods. Very close agreements have been found. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KoshimotoMarcos kn-aut-sei=Koshimoto kn-aut-mei=Marcos aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MahmoodZaheed kn-aut-sei=Mahmood kn-aut-mei=Zaheed aut-affil-num=2 ORCID= en-aut-name=KagawaYukio en-aut-sei=Kagawa en-aut-mei=Yukio kn-aut-name=‰ÁìK—Y kn-aut-sei=‰Áì kn-aut-mei=K—Y aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=35 end-page=46 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Finite Elements with Divergence-free Shape Function and theApplication to Inhomogeneously-loaded Waveguide Analysis en-subtitle= kn-subtitle= en-abstract= kn-abstract=Divergence-free shape functions are proposed for the finite elements, with which inhomogeneously-loaded and arbitrarily-shaped waveguides are analysed. The method is based on vectorial finite element formulation employing edge elements. The shape functions used for the approximation of the fields are shown analytically to be divergence-free and as an evidence, the non-physical solutions that appeared in the longitudinal component finite element formulation have been shown to be absent. To show the validity of the elements, application is made for the analysis of rectangular waveguides loaded with dielectric slab and a waveguide with curved structure. The solutions obtained are compared with the analytical ones or the solutions reported elsewhere. The degree of accuracy has been found satisfactory. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=MahmoodZaheed kn-aut-sei=Mahmood kn-aut-mei=Zaheed aut-affil-num=1 ORCID= en-aut-name=KagawaYukio en-aut-sei=Kagawa en-aut-mei=Yukio kn-aut-name=‰ÁìK—Y kn-aut-sei=‰Áì kn-aut-mei=K—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue=2 article-no= start-page=33 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19890330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Flow of Rarefied Vapour past a Liquid Sphere en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper deals with the low Mach numbers flow of a rarefied vapour past a liquid sphere accompanied with condensation and evaporation at its surface. The linearized Bhatnager-Gross-Krook(B-G-K} equation is used for the analysis, and from it the integral equations of the density, temperature and flow velocities are derived. These integral equations are solved numerically over a wide range of the Knudsen number covering from the slip flow to the nearly free molecular flow. The drag on the sphere is also calculated and is compared with that of previous work. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IshiharaYuji kn-aut-sei=Ishihara kn-aut-mei=Yuji aut-affil-num=1 ORCID= en-aut-name=YamamotoKyoji en-aut-sei=Yamamoto en-aut-mei=Kyoji kn-aut-name=ŽR–{‹±“ñ kn-aut-sei=ŽR–{ kn-aut-mei=‹±“ñ aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Engineering Mathematics affil-num=2 en-affil= kn-affil=Engineering Mathematics END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=53 end-page=61 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Focusing Characteristic Analysis of Circular Fresnel Zone Plate Lens en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fresnel zone plate lens (FZPL) has widely been used in electromagnetic antenna applications. Most analysis method based on the potential (scalar) wave approximation has been applied to a few very limited and simplified cases. The present paper analyzes the FZPL in more general form including the diffraction and transmission using the method of moments (MoM). The focusing gain characteristics in the oblique incidence as well as in the normal incidence are considered. The MoM solution using the three-dimensional vectorial formulation requires a large memory space for the FZPL as it is operated at a short wavelength. This is simply overcome by using an iterative conjugate gradient method for the numerical evaluation. The MoM solutions are compared with the other solutions. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=KimTae Yong kn-aut-sei=Kim kn-aut-mei=Tae Yong aut-affil-num=1 ORCID= en-aut-name=KagawaYukio en-aut-sei=Kagawa en-aut-mei=Yukio kn-aut-name=‰ÁìK—Y kn-aut-sei=‰Áì kn-aut-mei=K—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Departrnent of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=1 article-no= start-page=15 end-page=23 dt-received= dt-revised= dt-accepted= dt-pub-year=2002 dt-pub=200211 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=For Geometric Inference from Images, What Kind of Statistical Model Is Necessary? en-subtitle= kn-subtitle= en-abstract= kn-abstract=In order to facilitate smooth communications with researchers in other fields including statistics, this paper investigates the meaning of "statistical methods" for geometric inference based on image feature points, We point out that statistical analysis does not make sense unless the underlying "statistical ensemble" is clearly defined. We trace back the origin of feature uncertainty to image processing operations for computer vision in general and discuss the implications of asymptotic analysis for performance evaluation in reference to "geometric fitting", "geometric model selection", the "geometric AIC", and the "geometric MDL". Referring to such statistical concepts as "nuisance parameters", the "Neyman-Scott problem", and "semiparametric models", we point out that simulation experiments for performance evaluation will lose meaning without carefully considering the assumptions involved and intended applications. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=2 article-no= start-page=17 end-page=24 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19920328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Freezing of Quiescent Water in a Horizontal Cylinder en-subtitle= kn-subtitle= en-abstract= kn-abstract=Heat transfer measurements were conducted during freezing of quiescent water in a horizontal cylinder. A horizontal cylinder with inner diameter of 61.1 mm is cooled by air in a constant low temperature room and time variations of the radial distribution of fluid temperature were observed. Experimental results for the velocity of the phase change interface, the time taken for complete freezing and apparent freezing heat transfer coefficient were compared with the simple theoretical model based on the quasisteady assumption. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FengYibu kn-aut-sei=Feng kn-aut-mei=Yibu aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= en-aut-name=NozuShigeru en-aut-sei=Nozu en-aut-mei=Shigeru kn-aut-name=–ì’ÃŽ  kn-aut-sei=–ì’à kn-aut-mei=Ž  aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Food Engineering, Heilongjiang Commercial College affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=89 end-page=98 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Functional Testing of an ALU en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper considers a test set for an ALU with look ahead carry generators(LCGs). The ALU is logically partitioned into two groups of blocks, the group of one-bit operation units and LCG group. Each group is tested in parallel and exhaustively, independent of the other. And an easily testable design is applied to several blocks for decreasing the number of the input combinations of them. Under the easily testable design, a minimum test set for each group is generated, and the upper and lower bounds for a minimum test for the ALU are derived. The difference of the lower and upper bounds is not large, and a test set whose number of test vectors is equal to the upper bound can be easily obtained as the union of minimum test sets for two groups. Hence, the union can be used as a complete and practical test set for the ALU. en-copyright= kn-copyright= en-aut-name=YokohiraTokumi en-aut-sei=Yokohira en-aut-mei=Tokumi kn-aut-name=‰¡•½“¿”ü kn-aut-sei=‰¡•½ kn-aut-mei=“¿”ü aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=18 end-page=35 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fundamental Matrix Computation: Theory and Practice en-subtitle= kn-subtitle= en-abstract= kn-abstract=We classify and review existing algorithms for computing the fundamental matrix from point correspondences and propose new effective schemes: 7-parameter Levenberg-Marquardt (LM) search, EFNS, and EFNS-based bundle adjustment. Doing experimental comparison, we show that EFNS and the 7-parameter LM search exhibit the best performance and that additional bundle adjustment does not increase the accuracy to any noticeable degree. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YasuyukiSugaya kn-aut-sei=Yasuyuki kn-aut-mei=Sugaya aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=13 end-page=24 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fundamental Study on Electrical Discharge Machining en-subtitle= kn-subtitle= en-abstract= kn-abstract=The generation mechanism of crater in electrical discharge machining is analyzed with a single pulse discharge device for alloy tool steel, black alumina ceramics, cermet and cemented carbide, investigating the gap voltage, the discharge current, the shape of crater, the wear of electrode and so on. The experimental analysis makes it clear that the shape of crater has a characteristic feature for the kind of workpiece. The shape of electrode, which changes with the wear by an electric spark, has a significant effect on the shape of crater. The diameter and the depth of crater have a close relation to the discharge energy for alloy tool steel, black alumina ceramics and cermet, while those for cemented carbide are related to the discharge current. The shape factor which is the ratio of the depth to the diameter of crater is different for the work material. en-copyright= kn-copyright= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=NakajimaToshikatsu en-aut-sei=Nakajima en-aut-mei=Toshikatsu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=EndoOsamu en-aut-sei=Endo en-aut-mei=Osamu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue=2 article-no= start-page=29 end-page=44 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200303 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Gain Tuning Model of Human Expert for Looper Height Control in Hot Strip Rolling en-subtitle= kn-subtitle= en-abstract= kn-abstract=In hot strip rolling mills, the looper control system is automated. However, the looper's behavior tends to be unstable in threading. Therefore, human expert always intervenes and stabilizes the looper's behavior by tuning PID gains and interposing manipulation variable of looper control system. In this paper, we propose a method based on the recurrent neural network to express PID gains tuning action by human. Furthermore, we propose two methods to update the model by learning. To check the effectiveness of the proposed learning methods, numerical simulation applied to the looper height control is carried out. en-copyright= kn-copyright= en-aut-name=ImajoShuya en-aut-sei=Imajo en-aut-mei=Shuya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NishiTatsushi en-aut-sei=Nishi en-aut-mei=Tatsushi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=4 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=1 article-no= start-page=44 end-page=52 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Generating Dense Point Matches Using Epipolar Geometry en-subtitle= kn-subtitle= en-abstract= kn-abstract=Dense point matches are generated over two images by rectifying the two images to align epipolar lines horizontally, and horizontally sliding a template. To overcome inherent limitations of 2-D search, we incorporate the gnaturalness of the 3-D shapeh implied by the resulting matches. After stating our rectification procedure, we introduce our multi-scale template matching scheme and our outlier removal technique using tentatively reconstructed 3-D shapes. Doing real image experiments, we discuss the performance of our method and remaining issues. en-copyright= kn-copyright= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name=›’J•Û”V kn-aut-sei=›’J kn-aut-mei=•Û”V aut-affil-num=1 ORCID= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=2 ORCID= en-aut-name=KanazawaYasushi en-aut-sei=Kanazawa en-aut-mei=Yasushi kn-aut-name=‹à‘ò–õ kn-aut-sei=‹à‘ò kn-aut-mei=–õ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science, Okayama University affil-num=3 en-affil= kn-affil=Department of Knowledge-based Information Engineering Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=38 cd-vols= no-issue=1-2 article-no= start-page=91 end-page=96 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200403 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Generation of IgM and IgG1 monoclonal antibodies with identical variable regions: comparison of avidity en-subtitle= kn-subtitle= en-abstract= kn-abstract=Generally, IgM antibodies (Abs) produced in a primary immune response show lower affinity for an inducing antigen (Ag) compared with the corresponding IgG Abs that are major switched isotypes formed in the secondary response. An IgM molecule is a pentamer with 10 Ag-binding sites that will contribute to an increase of avidity for an Ag. To estimate the contribution of the pentameric structure to the avidity of an IgM Ab, we generated IgM and IgG1 monoclonal Abs (mAbs) with identical V regions that are specific for 4-hydroxy-3-nitrophenylacetyl (NP) by in vitro class switching of B cells followed by the cell fusion with a mouse myeloma cell line. Compared with an anti-NP IgG1 mAb, the corresponding IgM mAb showed much higher avidity for NP-conjugated bovine serum albumin, which was drastically reduced after being dissociated into monomers. en-copyright= kn-copyright= en-aut-name=KanayamaNaoki en-aut-sei=Kanayama en-aut-mei=Naoki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YamakoshiKimi en-aut-sei=Yamakoshi en-aut-mei=Kimi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KiyomiMasaaki en-aut-sei=Kiyomi en-aut-mei=Masaaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=MagariMasaki en-aut-sei=Magari en-aut-mei=Masaki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=OhmoriHitoshi en-aut-sei=Ohmori en-aut-mei=Hitoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=5 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=111 end-page=120 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Genetic Algorithm with Evolutionary Chain-Based Mutation and Its Applications en-subtitle= kn-subtitle= en-abstract= kn-abstract=Mutation is one of the important operators in genetic algorithm. In traditional genetic algorithm, mutation is activated stochastically. In this way it is unknown and cannot be controlled for which individuals to be mutated. Therefore, it is unavoidable that some good individuals are destroyed by mutation and then the evolutionary efficiency of the genetic algorithm is dampened. Owing to this kind of destructivity of mutation, the operator of mutation has to be limited within a very small probability, and the potentiality of mutation is consequently limited. In this paper, we present an evolutionary chain-based mutation and a control strategy of reasonable competition, in which the heuristic information provided by the evaluation function is well utilized. This method avoids the blindness of stochastic mutation. The performance improved in this method is shown by two examples, a fuzzy modeling for the identification of a nonlinear function and a typical combinatorial optimization problem-the traveling salesman problem. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YeJu kn-aut-sei=Ye kn-aut-mei=Ju aut-affil-num=1 ORCID= en-aut-name=TanakaMasahiro en-aut-sei=Tanaka en-aut-mei=Masahiro kn-aut-name=“c’†‰ë”Ž kn-aut-sei=“c’† kn-aut-mei=‰ë”Ž aut-affil-num=2 ORCID= en-aut-name=TaninoTetsuzo en-aut-sei=Tanino en-aut-mei=Tetsuzo kn-aut-name=’J–ì“NŽO kn-aut-sei=’J–ì kn-aut-mei=“NŽO aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Information Technology affil-num=3 en-affil= kn-affil=Department of Information Technology END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=1 article-no= start-page=10 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200801 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Geometric BIC en-subtitle= kn-subtitle= en-abstract= kn-abstract=The author introduced the "geometric AIC" and the "geometric MDL" as model selection criteria for geometric fitting problems. These correspond to Akaikefs "AIC" and Rissanen's "BIC", respectively, well known in the statistical estimation framework. Another criterion well known is Schwarzf "BIC", but its counterpart for geometric fitting has been unknown. This paper introduces the corresponding criterion, which we call the "geometric BIC", and shows that it is of the same form as the geometric MDL. We present the underlying logical reasoning of Bayesian estimation. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=1 article-no= start-page=27 end-page=38 dt-received= dt-revised= dt-accepted= dt-pub-year=1993 dt-pub=19931130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Ground State of Coupled Quantum Wires en-subtitle= kn-subtitle= en-abstract= kn-abstract=The ground states of interacting electrons in coupled quantum wires are analyzed on the basis of the density functional theory. The exchange-correlation potential is calculated from 'exact' results given by the Green's function Monte Carlo method in two and three dimensions. It is shown that the critical density signifying the change from symmetrical to asymmetrical ground state is weakly dependent on the details of the exchange-correlation potential. These critical values are compared with the result of the three-dimensional analysis for a single wire. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TachibanaHiroyuki kn-aut-sei=Tachibana kn-aut-mei=Hiroyuki aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=FujimuraHidenori kn-aut-sei=Fujimura kn-aut-mei=Hidenori aut-affil-num=3 ORCID= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=11 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Heat Transfer Characteristics of Two Phase ClosedThermosiphon for Geothermal Energy (1st Report: Measurement on Heat Transfer Coefficient) en-subtitle= kn-subtitle= en-abstract= kn-abstract=To prevent freezing of road and aquaduct by extracting geothermal heat with two phase closed thermosiphon has been widely used in a cold area. Both heat transfer characteristics in the underground soil and function of the thermosiphon to extract geothermal heat have to be made clear for the purpose of the above system. This study is directed for the purpose to prevent freezing of fire hydrant and composed of the fundamental experiment and the empirical experiment. In the fundamental study, heat transfer behavior is studied experimentally in the small size filling bath representing the underground soil layer. After recording temperature distribution, heat transfer coefficient is measured, they are proceeded into the correlation between the dimensionless number of Nusselt, Rayleigh and Fourier. The fundamental study is described as the first report. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HirashimaMasao kn-aut-sei=Hirashima kn-aut-mei=Masao aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Mitsui. Metal Engineering &Service Co., Ltd. affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=27 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Heat Transfer Characteristics of Two Phase Closed Thermosiphon for Geothermal Energy (2nd Report: Heat Transfer Behavior on Site) en-subtitle= kn-subtitle= en-abstract= kn-abstract=Heating and refrigerating technique such as snow melting of road and cold storage by utilizing temperature difference between underground soil and atmosphere is widely used[1-4] in a cold area. In the 1st Report, heat transfer characteristics of two phase closed thermosiphon for extracting geothermal energy is studied fundamentally. In the empirical study, heat extract rate is measured in connection with the change of atmospheric temperature utilizing real two thermosiphons on the site. Temperature distribution on the surface of the thermosiphon and underground soil around it is also measured. Based on the data of the empirical experiment, it is confirmed that prevention of freezing for fire hydrant can be achieved by geothermal heat utilizing two phase closed thermosiphon. Present paper describes the heat transfer behavior of the thermosiphon as the 2nd report. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HirashimaMasao kn-aut-sei=Hirashima kn-aut-mei=Masao aut-affil-num=1 ORCID= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Mitsui. Metal Engineering &Service Co., Ltd. affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=52 end-page=62 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Heat and Mass Transfer Analysis of Fluidized Bed Grain Drying en-subtitle= kn-subtitle= en-abstract= kn-abstract=The effects of heat and mass transfer parameters on the efficiency of fluidized bed drying have been studied to optimize the input and output conditions. The analysis was carried out using two different materials, wheat and corn. Energy and exergy models based on the first and second law of thermodynamic are developed. Furthermore, some unified non-dimensional experimental correlations for predicting the efficiency of fluidized bed drying process have been proposed. The effects of hydrodynamics and thermodynamics conditions such as the inlet air temperature, the initial moisture content and well known Fourier and Reynolds numbers on energy efficiency and exergy efficiency were analyzed using the developed model. A good agreement was achieved between the model predictions, non-dimensional correlations and the available experimental results. en-copyright= kn-copyright= en-aut-name=InabaHideo en-aut-sei=Inaba en-aut-mei=Hideo kn-aut-name=ˆî—t‰p’j kn-aut-sei=ˆî—t kn-aut-mei=‰p’j aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SyahrulHusain kn-aut-sei=Syahrul kn-aut-mei=Husain aut-affil-num=2 ORCID= en-aut-name=HoribeAkihiko en-aut-sei=Horibe en-aut-mei=Akihiko kn-aut-name=–x•”–¾•F kn-aut-sei=–x•” kn-aut-mei=–¾•F aut-affil-num=3 ORCID= en-aut-name=HarukiNaoto en-aut-sei=Haruki en-aut-mei=Naoto kn-aut-name=t–Ø’¼l kn-aut-sei=t–Ø kn-aut-mei=’¼l aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=50 end-page=59 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=High Accuracy Homography Computation without Iterations en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present highly accurate least-squares (LS) alternatives to the theoretically optimal maximum likelihood (ML) estimator for homographies between two images. Unlike ML, our estimators are non-iterative and yield solutions even in the presence of large noise. By rigorous error analysis, we derive a ghyperaccurateh estimator which is unbiased up to second order noise terms. Then, we introduce a computational simplification, which we call gTaubin approximationh, without incurring a loss in accuracy. We experimentally demonstrate that our estimators have accuracy surpassing the traditional LS estimator and comparable to the ML estimator. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NiitsumaHirotaka kn-aut-sei=Niitsuma kn-aut-mei=Hirotaka aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=RangrajanPrasanna kn-aut-sei=Rangrajan kn-aut-mei=Prasanna aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical Engineering Southern Methodist University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=61 end-page=74 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Human Interface Technology for Operation Support of LargeSized Crane en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this research, a Human Interface system is designed intended to mobile crane. The intervention of human is unavoidable to attain the high performance of electro mechanical system. As is known, crane operation is complicated. Recently, the decrease of expert person induced crane accident. So in near future, it is required a partial automation of crane operation and human support technology. We are aiming at the development of the operation support system for a crane. In this research, development of the hydro mechanical models representing both of static and dynamics movements are made. Further, actual experimental data of operating mobile crane, which are electrical signal data and three-dimension (3D) position of moving load is measured. The actual operating data are compared with the model and it is found that the developed electromechanical model can explain the behaviors of actual data. en-copyright= kn-copyright= en-aut-name=KawamuraMao en-aut-sei=Kawamura en-aut-mei=Mao kn-aut-name=쑺^‰› kn-aut-sei=쑺 kn-aut-mei=^‰› aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=YamagataKatuki en-aut-sei=Yamagata en-aut-mei=Katuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ShimomuraKoichi en-aut-sei=Shimomura en-aut-mei=Koichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Okayama University affil-num=2 en-affil= kn-affil=Dept. of Electrical and Electronic Engineering Division of Industrial Innovation Science The Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Kobelco Cranes co., Ltd affil-num=4 en-affil= kn-affil=Kobelco Cranes co., Ltd END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=75 end-page=92 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Human Support Agent for Design and Diagnosis using Classifier System en-subtitle= kn-subtitle= en-abstract= kn-abstract=As is well known, an advanced knowledge and know-how are needed in the design and the diagnosis work. Further, human experts can cope with the recent trend of customers needs. Therefore, the design and the diagnosis work have been privately performed in the past, and its information cannot be shared. In addition, the number of experts is decreasing. It is a very important problem to maintain and to extend experts technologies having been built up. For the purpose, methods and systems for technical inheritance of the advanced techniques of the skilled engineers are needed to train the unskilled operators and also can assist skilled operators. In this research, attention is focused on the design of analog filter circuit. To attain the target, the circuit structural classifier system to support design work is developed. Furthermore, simulation technology for hot strip rolling mills based on distributed agents is presented aimed to develop tools for the diagnosis of hot strip rolling mills operation. en-copyright= kn-copyright= en-aut-name=OheKeita en-aut-sei=Ohe en-aut-mei=Keita kn-aut-name=‘å]Œ[‘¾ kn-aut-sei=‘å] kn-aut-mei=Œ[‘¾ aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=45 cd-vols= no-issue= article-no= start-page=15 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=201101 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hyper Least Squares and Its Applications en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present a new least squares (LS) estimator, called gHyperLSh, specifically designed for parameter estimation in computer vision applications. It minimizes the algebraic distance under a special scale normalization, which is derived by rigorous error analysis in such a way that statistical bias is removed up to second order noise terms. Numerical experiments suggest that our HyperLS is far superior to the standard LS and comparable in accuracy to maximum likelihood (ML), which is known to produce highly accurate results in image applications but may fail to converge if poorly initialized. Our HyperLS is a perfect candidate for ML initialization. In addition, we discuss how image-based inference problems have different characteristics form conventional statistical applications, with a view to serving as a bridge between mathematicians and computer engineers. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=RangrajanPrasanna en-aut-sei=Rangrajan en-aut-mei=Prasanna kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SugayaYasuyuki en-aut-sei=Sugaya en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=NiitsumaHirotaka en-aut-sei=Niitsuma en-aut-mei=Hirotaka kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science, Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical Engineering, Southern Methodist University affil-num=3 en-affil= kn-affil=Department of Computer Science and Engineering, Toyohashi University of Technology affil-num=4 en-affil= kn-affil=Department of Computer Science, Okayama University END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=42 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Hyperaccurate Ellipse Fitting without Iterations en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper presents a new method for fitting an ellipse to a point sequence extracted from images. It is widely known that the best fit is obtained by maximum likelihood. However, it requires iterations, which may not converge in the presence of large noise. Our approach is algebraic distance minimization; no iterations are required. Exploiting the fact that the solution depends on the way the scale is normalized, we analyze the accuracy to high order error terms with the scale normalization weight unspecified and determine it so that the bias is zero up to the second order. We demonstrate by experiments that our method is superior to the Taubin method, also algebraic and known to be highly accurate. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=RangrajanPrasanna kn-aut-sei=Rangrajan kn-aut-mei=Prasanna aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical Engineering Southern Methodist University END start-ver=1.4 cd-journal=joma no-vol=30 cd-vols= no-issue=1 article-no= start-page=25 end-page=33 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19951228 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Identification of Electric Charge Distribution Using Dual Reciprocity Boundary Element Models en-subtitle= kn-subtitle= en-abstract= kn-abstract=Identification of unknown electric charges or sources distributed in space is made from the data observed over the field boundary using dual reciprocity boundary element models. The inhomogeneous term of the Poisson field can equivalently be expressed as the linear combination of the functions associated with the particular solutions to transform into Laplace equation. For the solution procedure, the variational formulation is employed, in which the regular boundary integral approach is incorporated to avoid the singularity. Numerical examples are presented to demonstrate the availability and the capability. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SunYonghao kn-aut-sei=Sun kn-aut-mei=Yonghao aut-affil-num=1 ORCID= en-aut-name=KagawaYukio en-aut-sei=Kagawa en-aut-mei=Yukio kn-aut-name=‰ÁìK—Y kn-aut-sei=‰Áì kn-aut-mei=K—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=16 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Immobilization of Photoelectric Dye on the Polyethylene FilmSurface en-subtitle= kn-subtitle= en-abstract= kn-abstract=PE film was treated with fuming nitric acid at 80Ž for 20 min, resulting in introduction of COOH moieties on the film surface. The COOHfs were reacted with ethylenediamine, whose amino groups were used for linking with (2-[4-(dibutylamino)phenyl]ethenyl)-3-carboxy-methylbenzo-thiazolium, photoelectric dye (NK-5962), which absorbs visible light and converts the photon energy to electric potentials. The dye molecules were immobilized on the PE film surface and they were able to stimulate chick retinal tissues on incidence of visible light. These facts hopefully lead to development of an artificial retinal prosthesis. en-copyright= kn-copyright= en-aut-name=UchidaTetsuya en-aut-sei=Uchida en-aut-mei=Tetsuya kn-aut-name=“à“c“N–ç kn-aut-sei=“à“c kn-aut-mei=“N–ç aut-affil-num=1 ORCID= en-aut-name=IshimaruSanae en-aut-sei=Ishimaru en-aut-mei=Sanae kn-aut-name=Ίۑ•c kn-aut-sei=ÎŠÛ kn-aut-mei=‘•c aut-affil-num=2 ORCID= en-aut-name=ShimamuraKaoru en-aut-sei=Shimamura en-aut-mei=Kaoru kn-aut-name=“‡‘ºŒO kn-aut-sei=“‡‘º kn-aut-mei=ŒO aut-affil-num=3 ORCID= en-aut-name=UjiAkihito en-aut-sei=Uji en-aut-mei=Akihito kn-aut-name=‰FŽ¡Íl kn-aut-sei=‰FŽ¡ kn-aut-mei=Íl aut-affil-num=4 ORCID= en-aut-name=MatsuoToshihiko en-aut-sei=Matsuo en-aut-mei=Toshihiko kn-aut-name=¼”ör•F kn-aut-sei=¼”ö kn-aut-mei=r•F aut-affil-num=5 ORCID= en-aut-name=OhtsukiHiroshi en-aut-sei=Ohtsuki en-aut-mei=Hiroshi kn-aut-name=‘匎—m kn-aut-sei=‘匎 kn-aut-mei=—m aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil= affil-num=5 en-affil= kn-affil= affil-num=6 en-affil= kn-affil= END start-ver=1.4 cd-journal=joma no-vol=44 cd-vols= no-issue= article-no= start-page=24 end-page=31 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=201001 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Improved Multistage Learning for Multibody Motion Segmentation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We present an improved version of the MSL method of Sugaya and Kanatani for multibody motion segmentation. We replace their initial segmentation based on heuristic clustering by an analytical computation based on GPCA, fitting two 2-D affine spaces in 3-D by the Taubin method. This initial segmentation alone can segment most of the motions in natural scenes fairly correctly, and the result is successively optimized by the EM algorithm in 3-D, 5-D, and 7-D. Using simulated and real videos, we demonstrate that our method outperforms the previous MSL and other existing methods. We also illustrate its mechanism by our visualization technique. en-copyright= kn-copyright= en-aut-name=KanataniKenichi en-aut-sei=Kanatani en-aut-mei=Kenichi kn-aut-name=‹à’JŒ’ˆê kn-aut-sei=‹à’J kn-aut-mei=Œ’ˆê aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=SugayaYasuyuki kn-aut-sei=Sugaya kn-aut-mei=Yasuyuki aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Computer Science Okayama University affil-num=2 en-affil= kn-affil=Department of Information and Computer Sciences Toyohashi University of Technology END start-ver=1.4 cd-journal=joma no-vol=36 cd-vols= no-issue=1 article-no= start-page=117 end-page=121 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=200112 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Improvement of Biocompatibility of Silicone Elastomer by Surface Modification en-subtitle= kn-subtitle= en-abstract= kn-abstract=ƒÁ-Methacryloxypropyltrimethoxysilane (ƒÁ-MPS) was grafted to silicone due to emulsion polymerization to induce Si-OH groups, in order to provide silicone with bioactivity spontaneous deposition of apatite in body fluid and to improve cytocompatibility. Apatite deposited on the grafted silicone within 7 days of soaking in 1.5 times as concentrated as the Kokubo solution. Osteoblastic cells (MC3T3-E1) were cultured on the specimens up to 7 days. After 5 days of culture, the number of MC3T3-E1 cells on the grafted specimen was much greater than that on the original specimen. These results indicated that the biocompatibility of silicone elastomer was improved by the grafting ƒÁ-MPS. en-copyright= kn-copyright= en-aut-name=ShirosakiYuki en-aut-sei=Shirosaki en-aut-mei=Yuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TsuruKanji en-aut-sei=Tsuru en-aut-mei=Kanji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HayakawaSatoshi en-aut-sei=Hayakawa en-aut-mei=Satoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=OsakaAkiyoshi en-aut-sei=Osaka en-aut-mei=Akiyoshi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TakashimaSeisuke en-aut-sei=Takashima en-aut-mei=Seisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=2 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University affil-num=5 en-affil= kn-affil=Co-operative Research Center, Okayama University END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Improving Methods of Wear Resistance in Heavy Loaded SlidingFriction Pairs en-subtitle= kn-subtitle= en-abstract= kn-abstract=Improvement of wear resistance and durability of machine elements with sliding friction pairs is the important tribological problems. The wear resistance has been determined with many configurative parameters, technological parameters, and operational parameters. In this study kinematics of cylindrical joint (CJ), whose motion is reciprocating and rotating, and influence of various parameters on wear resistance of friction pair was investigated. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=Vladimir I.Klochikhin kn-aut-sei=Vladimir I. kn-aut-mei=Klochikhin aut-affil-num=1 ORCID= en-aut-name=FujiiMasahiro en-aut-sei=Fujii en-aut-mei=Masahiro kn-aut-name=“¡ˆä³_ kn-aut-sei=“¡ˆä kn-aut-mei=³_ aut-affil-num=2 ORCID= en-aut-name=YoshidaAkira en-aut-sei=Yoshida en-aut-mei=Akira kn-aut-name=‹g“c² kn-aut-sei=‹g“c kn-aut-mei=² aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Russian Academy of Science affil-num=2 en-affil= kn-affil=Dept. of Mechanical Engineering Okayama University affil-num=3 en-affil= kn-affil=Dept. of Mechanical Engineering Okayama University END start-ver=1.4 cd-journal=joma no-vol=43 cd-vols= no-issue= article-no= start-page=22 end-page=26 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200901 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Information Transfer and Entanglement Creation by Spin Chains: Effects of Noise and Asymmetry en-subtitle= kn-subtitle= en-abstract= kn-abstract=For the transfer of quantum information and the creation of entangled states, the application of tuned spin chains, systems of spins with the nearest-neighbor coupling tuned so as to give high efficiency, has been proposed and some examples of high performance have been given by several authors. In this article, the effect of deviations from tuned values and the effect of resultant asymmetry are investigated through numerical simulations and theoretical analyses. It is shown that there exists a system where the transfer efficiency is comparable with exactly tuned ones and, at the same time, robust to noises in the coupling constants. It is also shown that the effect of asymmetry on the efficiency of entanglement creation is of the second order when the asymmetry is small. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=ChaiHong kn-aut-sei=Chai kn-aut-mei=Hong aut-affil-num=2 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=3 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=97 end-page=103 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Inspection Method by Comparing CAD Figure with Processed Image en-subtitle= kn-subtitle= en-abstract= kn-abstract=We propose the recognition method of bridge soldering base metal on the circuits by comparing CAD figure and input image of image processing to locate the soldering iron tip accurately to secure the high quality Firstly, three dimensional CAD assembly drawing of circuits which are assembled perpendicularly in each other is projected on an imaginary two dimensional screen which is vertical to the optical axis of the camera The projected image is used as the standard CAD figure to inspect the location of the bridge soldering base metal. The positions among the bridge soldering base metals show the line state. So this line (connecting line) is used as the reference line to inspect the location of the bridge soldering base metal. The characteristics of the standard figure are represented by the connecting line, edge line and center points of base metal. Secondly, the position and gradient of connecting line among bridge soldering base metals in the input image is estimated. And the position of base metal and assembly accuracy of circuit units are calculated by comparing the shape and position of each base metal with its standard figure based on the connecting line Furthermore, the length between the opposite edges of the base metals are calculated to inspect the positions and the assemble accuracy of circuit units. en-copyright= kn-copyright= en-aut-name=JindaiMitsuru en-aut-sei=Jindai en-aut-mei=Mitsuru kn-aut-name=_‘ã[ kn-aut-sei=_‘ã kn-aut-mei=[ aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TanoMasakazu kn-aut-sei=Tano kn-aut-mei=Masakazu aut-affil-num=5 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OkamotoKatsuyuki kn-aut-sei=Okamoto kn-aut-mei=Katsuyuki aut-affil-num=6 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishinoAkira kn-aut-sei=Nishino kn-aut-mei=Akira aut-affil-num=7 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=OkamotoAsao kn-aut-sei=Okamoto kn-aut-mei=Asao aut-affil-num=8 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=NishimoriNaoki kn-aut-sei=Nishimori kn-aut-mei=Naoki aut-affil-num=9 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Okayama University affil-num=2 en-affil= kn-affil=Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Faculty of Engineering, Okayama University affil-num=5 en-affil= kn-affil=Faculty of Engineering, Okayama University affil-num=6 en-affil= kn-affil=Omron Okayama Co., Ltd. affil-num=7 en-affil= kn-affil=Omron Okayama Co., Ltd. affil-num=8 en-affil= kn-affil=Omron Co., Ltd. affil-num=9 en-affil= kn-affil=Omron Co., Ltd. END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=91 end-page=96 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Intelligent Monitoring System Using Multiviewpoints for Teleperation en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose the method to determine the position of the 2 cameras for the multiviewpoints as the robot is the work place. The optical axit's direction of the 1st camera is determined in the base ot work contents in teleoperation. The multiviewpoints system uses the 2 camera units that aren't installed side by side, so that the direction of the 2nd camera is decided in the base of the angle between the optical axes' direction of 2 cameras. Next, the distance from the camera to the work place is determined according to the distance resolution of image on the monitor, and the camera type of which the point-blank range is not this distance is selected. And the efficacy ot this system is examined with an experiment. en-copyright= kn-copyright= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=1 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering END start-ver=1.4 cd-journal=joma no-vol=28 cd-vols= no-issue=2 article-no= start-page=1 end-page=7 dt-received= dt-revised= dt-accepted= dt-pub-year=1994 dt-pub=19940315 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Internal Structure and Phase Transformation of Ti-Mo Alloy Fine Particles en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fine particles of Ti-Mo alloy have been prepared by means of arc method, and investigated on internal structure and phase transformation using HR-TEM and EDS. Martensite phase was observed in a particle containing comparatively low concentration of Mo, and ƒÖ phase was also found to exist in a nearly 14 % M0 particle. The structure of the ƒÖ phase in the fine particle is expanded and remarkably unstable in comparison with the bulk sample, so that it has disappeared in a few seconds during TEM observation. Moreover, the ƒÀ structure of Ti-Mo particles has changed to the unusual fcc phase with irradiation of a strong electron beam. en-copyright= kn-copyright= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=’|Œ³‰Ã—˜ kn-aut-sei=’|Œ³ kn-aut-mei=‰Ã—˜ aut-affil-num=1 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=2 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=”ò“cŽçF kn-aut-sei=”ò“c kn-aut-mei=ŽçF aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=31 cd-vols= no-issue=2 article-no= start-page=11 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=19970328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Internal Structure and Phase Transformation of Ti-V Alloy Fine Particles en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fine particles of Ti-V alloy were prepared by means of arc method and were investigated on internal structure and phase transformation using HR-TEM and EDS. Martensite phase was observed in a particle containing comparatively low concentration of V, and ƒÖ phase was also found to exist in a nearly 15% V particle. The structure of the ƒÖ phase in the fine particle is remarkably expanded in comparison with the bulk sample, and the ƒÖ phase is unstable, so that it has disappeared in a few seconds during TEM observation. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IshiiKouta kn-aut-sei=Ishii kn-aut-mei=Kouta aut-affil-num=1 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=’|Œ³‰Ã—˜ kn-aut-sei=’|Œ³ kn-aut-mei=‰Ã—˜ aut-affil-num=2 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=”ò“cŽçF kn-aut-sei=”ò“c kn-aut-mei=ŽçF aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue=1-2 article-no= start-page=15 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19980420 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Internal Structure and Viscoelasticity Estimation by a Mechanical Impedance - In case of a vibrating disk - en-subtitle= kn-subtitle= en-abstract= kn-abstract=In a stiffness estimation of living body, an internal structure under the skin influences the measured results. Because a different stiffness of body caused by bones and muscles is obtained. In this paper, by using a measurement system of mechanical impedance, the relations between a viscoelasticity and a distance from the surface of silicone-gel model is calculated. This relation is applied to silicone-gel tumor model and a shape and a viscoelasticity of semi-sphere silicone-gel tumous are estimated. The obtained results are expressed as a reconstructed 3-D image of shape / viscoelasticity. The revised curve-fitting of mechanical impedance and the cancellation of peripheral vibration influence are proposed in order to increase an estimation acccuracy. en-copyright= kn-copyright= en-aut-name=MoriMasahiro en-aut-sei=Mori en-aut-mei=Masahiro kn-aut-name=X­O kn-aut-sei=X kn-aut-mei=­O aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=55 end-page=64 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Intrinsic Bistability of Coupled Quantum Wires: Localization due to Many-Body Effects en-subtitle= kn-subtitle= en-abstract= kn-abstract=The ground state of a system of electrons accumulated in a pair of coupled symmetric quantum wires is analyzed on the basis of density functional theory. It is shown that, in a domain of physical parameters, electrons are localized in either of wires. The main contribution to the total energy of this system comes from the Hartree energy, or the electrostatic energy, and the exchange-correlation energy between electrons. The ground state is determined by a competition between these contributions: We have symmetric electron distributions when the Hartree energy dominates and asymmetric (localized) states are realized in the opposite case. This kind of simple system with bistable electronic states may be applied to semiconductor memory devices. en-copyright= kn-copyright= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TachibanaHiroyuki kn-aut-sei=Tachibana kn-aut-mei=Hiroyuki aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=HashimotoSeiji kn-aut-sei=Hashimoto kn-aut-mei=Seiji aut-affil-num=3 ORCID= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue=1 article-no= start-page=52 end-page=55 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=200501 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Large-Scale Molecular Dynamics Simulation of CoulombClusters: A Finite-Temperature Analysis en-subtitle= kn-subtitle= en-abstract= kn-abstract=Thermal behavior of Coulomb clusters in a three dimensional confining potential is investigated by molecular dynamics simulations for system sizes of 1,000 to 20,288 ions. The specific heat of the system of shell-structured 20,000 ions is peaked almost at the same temperature as the system of bcc-structured 20,288 ions with much sharper structure for the latter. The diffusion coefficient and the peak to valley ratio of the two-dimensional pair distribution function on the outermost shell are obtained both as a function of temperature. The rotational movement of each shell in the system of 104 ions is observed. en-copyright= kn-copyright= en-aut-name=KanamoriKatsuya en-aut-sei=Kanamori en-aut-mei=Katsuya kn-aut-name=‹àXŽ–ç kn-aut-sei=‹àX kn-aut-mei=Ž–ç aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering, Faculty of Engineering, Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=21 end-page=28 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Laser Welding of Slices of Magnetic Circuit en-subtitle= kn-subtitle= en-abstract= kn-abstract=In electric power industry, there is a problem of achieving stable joint in different components using high productive and efficient technologies. One type of these components is packages of slices for magnetic circuit of electric motors, transformers etc., which need reliable means for their fixing. Laser welding is proposed to solve this problem as an alternative for existing technologies. The development of the laser welding process is presented based on process simulation, study of heat history and comparison with experimental results. Laser beam additional scanning technique is proposed to improve the quality and efficiency of the joining operation. en-copyright= kn-copyright= en-aut-name=S.kovalenkoVolodymyr en-aut-sei=S.kovalenko en-aut-mei=Volodymyr kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UnoYoshiyuki en-aut-sei=Uno en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=OkamotoYasuhiro en-aut-sei=Okamoto en-aut-mei=Yasuhiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=AnyakinM. en-aut-sei=Anyakin en-aut-mei=M. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=LutayA. en-aut-sei=Lutay en-aut-mei=A. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=ShubulKhaled Al. en-aut-sei=Shubul en-aut-mei=Khaled Al. kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering (Now at Laser Technology Research Institute, National Technical affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Laser Technology Research Institute, National Technical University of Ukraine affil-num=5 en-affil= kn-affil=Laser Technology Research Institute, National Technical University of Ukraine affil-num=6 en-affil= kn-affil=Laser Technology Research Institute, National Technical University of Ukraine END start-ver=1.4 cd-journal=joma no-vol=47 cd-vols= no-issue= article-no= start-page=25 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=201301 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Lazy Random Walk Efficient for Pollardfs Rho Metho‚„ Attacking on G3 over Barreto-Naehrig Curve (Corrected) en-subtitle= kn-subtitle= en-abstract= kn-abstract=Pairing?based cryptosystems are well implemented with Ate?type pairing over Barreto?Naehrig (BN) curve. Then, for instance, their securities depend on the difficulty of Discrete Logarithm Problem (DLP) on the so?denoted G3 over BN curve. This paper, in order to faster solve the DLP, first proposes to utilize Gauss period Normal Basis (GNB) for Pollardfs rho method, and then considers to accelerate the solving by an adoption of lazy random walk, namely tag tracing technique proposed by Cheon et al. en-copyright= kn-copyright= en-aut-name=NekadoKenta en-aut-sei=Nekado en-aut-mei=Kenta kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=TakaiYusuke en-aut-sei=Takai en-aut-mei=Yusuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=NogamiYasuyuki en-aut-sei=Nogami en-aut-mei=Yasuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=29 cd-vols= no-issue=2 article-no= start-page=1 end-page=4 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Low Temperature Age-Hardening of Al-12mass % Zn-0.5mass % Cu Alloy en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effect of addition of a small amount of copper to Al- 12mass % Zn binary alloy on the process of low temperature aging is studied by hardness test and transmission electron microscopy. Age hardening rate after quenching from various temperatures is slowed down by addition of 0.5mass % copper to the binary alloy. The hardness obtained after long aging, however, is increased a little by the addition of copper. The extent of soft surface layer formed by aging in the copper-added alloy is nearly equal to that obtained in the binary alloy. en-copyright= kn-copyright= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=1 ORCID= en-aut-name=NakagawaKeiyu en-aut-sei=Nakagawa en-aut-mei=Keiyu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KanadaniTeruto en-aut-sei=Kanadani en-aut-mei=Teruto kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Okayama University of Science affil-num=3 en-affil= kn-affil=Okayama University of Science END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=2 article-no= start-page=79 end-page=87 dt-received= dt-revised= dt-accepted= dt-pub-year=1990 dt-pub=19900329 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Mean Time Between Failure of Ring Arbiter with Requests Differing in Incidences en-subtitle= kn-subtitle= en-abstract= kn-abstract=In asynchronous arbiters, failures may happen, caused by metastable operations. The purpose of this study is to derive a formula to estimate such failures in a ring arbiter as mean time between failures (MTBF), under the condition that incidences of requests issued in all devices are different from each other. The operation of the arbiter is formularized by a markov chain. This chain is used to decide the probability at which each of possible failures contributes to MTBF. The sum of such probabilities gives the MTBF which can be represented as a sum of a finite number of terms. As an example, MTBF of a ring arbiter composed of 3 cells is shown. en-copyright= kn-copyright= en-aut-name=SatoYoichiro en-aut-sei=Sato en-aut-mei=Yoichiro kn-aut-name=²“¡—mˆê˜Y kn-aut-sei=²“¡ kn-aut-mei=—mˆê˜Y aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=Department of Information Technology END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=2 article-no= start-page=45 end-page=50 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990427 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement System of Biomechanical Properties for Portable Use en-subtitle= kn-subtitle= en-abstract= kn-abstract=It is difficult to evaluate a biomechanical properties quantitatively. The authors developed the measurement system of biomechanical properties formerly but it is on a large scale because of the use of personal computer. In this study, the portable measurement system of biomechanical impedance/mobility is developed. To establish a rapid measurement, a random vibration is adopted in input signal. The system consists of the measuring probe, amplifier, and a note-typed personal computer. The measurement probe is developed newly, and has an overall length of 9 ‡p (without a handle) and a total weight of about 500 g. The measurement program is also developed and is available to any computer which is worked under MS DOS compatible in Windows 95/98 operating system. The biomechanical spectra of thigh, temple and forehead are obtained and they show three typical spectrum patterns. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=YamadaNobuya kn-aut-sei=Yamada kn-aut-mei=Nobuya aut-affil-num=1 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=22 cd-vols= no-issue= article-no= start-page=1 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=1988 dt-pub=19880331 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of Biomechanical Impedance - Its device and measuring conditions en-subtitle= kn-subtitle= en-abstract= kn-abstract=Biomechanical impedance is relatively small compared to industrial mechanical impedance. Thus it is difficult to measure it precisely. A biomechanical impedance measuring system was developed for portable use by means of random excitation. This system doesn't require a fixed body and vibrator supporting apparatus. In order to obtain an impedance spectrum, the FFT processing is performed using a personal computer. The spectra of the biomechanical impedance which is measured on body surfaces depend on body positions and can be roughly classified into three spectra patterns : soft, stiff and intermediate. During the measurement, the measuring conditions (preload, diameter of the vibrating tip etc.) influence the results. However, it became clear that the linearity of the biomechanical impedance was satisfied in the limited measuring conditions. Accordingly it is possible to standardize the impedance and to compare it with the results under different measuring conditions. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name=YamamotoTatsuma en-aut-sei=Yamamoto en-aut-mei=Tatsuma kn-aut-name=ŽR–{’C”n kn-aut-sei=ŽR–{ kn-aut-mei=’C”n aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical & Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical & Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=63 end-page=72 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of Emotional Response by Similarity in Patterns of Galvanic Skin Reflex en-subtitle= kn-subtitle= en-abstract= kn-abstract=There is no doubt that many people feel the peace of mind or the pleasures of senses in appreciating music. But the estimation of the effect is very difficult and the objective estimation can be hardly done. This study proposed the objective estimating method of human emotion utilizing galvanic skin reflex (GSR) which reflects a human psychological activity. In this method, not by individual response, but by the series of response and pattern of appearance of GSR, the emotional response under appreciating music was investigated. In the case of appreciation of the same classic music to several subjects, the individual GSR responses are random and remarkable characteristic could not be find on the results. However, on the patterns of appearance of GSR, the patterns obtaining from the same generation are much similar each other and the patterns obtaining from different generation are less similar. It was cleared that the same music gave different effect on different generations. en-copyright= kn-copyright= en-aut-name=YamamotoYoshitake en-aut-sei=Yamamoto en-aut-mei=Yoshitake kn-aut-name=ŽR–{®• kn-aut-sei=ŽR–{ kn-aut-mei=®• aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IsshikiHiromi kn-aut-sei=Isshiki kn-aut-mei=Hiromi aut-affil-num=2 ORCID= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=3 ORCID= en-aut-name=YamamotoTatsuma en-aut-sei=Yamamoto en-aut-mei=Tatsuma kn-aut-name=ŽR–{’C”n kn-aut-sei=ŽR–{ kn-aut-mei=’C”n aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Maizuru College of Technology, Maizuru affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=27 cd-vols= no-issue=1 article-no= start-page=45 end-page=53 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19921125 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of Methane Concentration in a Rice Paddy Field with a Tunable Diode Laser Absorption Spectrometry en-subtitle= kn-subtitle= en-abstract= kn-abstract=A prototype device based on the tunable diode laser absorption spectrometry was constructed and the atmospheric methane concentration near the terrain in a rice paddy field was measured. An open optical path of 50 m length was employed along with a PbSnTe diode laser. Diurnal change of methane density with 30 seconds temporal resolution was recorded associated with meteorological parameters. A feasibility was proven for a practical application for in situ study of atmospheric methane. en-copyright= kn-copyright= en-aut-name=KagawaNaoki en-aut-sei=Kagawa en-aut-mei=Naoki kn-aut-name=ì’¼ŒÈ kn-aut-sei=ì kn-aut-mei=’¼ŒÈ aut-affil-num=1 ORCID= en-aut-name=WadaOsami en-aut-sei=Wada en-aut-mei=Osami kn-aut-name=˜a“cCŒÈ kn-aut-sei=˜a“c kn-aut-mei=CŒÈ aut-affil-num=2 ORCID= en-aut-name=HaiXu en-aut-sei=Hai en-aut-mei=Xu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KogaRyuji en-aut-sei=Koga en-aut-mei=Ryuji kn-aut-name=ŒÃ‰ê—²Ž¡ kn-aut-sei=ŒÃ‰ê kn-aut-mei=—²Ž¡ aut-affil-num=4 ORCID= en-aut-name=SanoHiroya en-aut-sei=Sano en-aut-mei=Hiroya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=InubushiKazuyuki en-aut-sei=Inubushi en-aut-mei=Kazuyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=The Graduate School of Natural Science and Technology affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Measurement and Test Center, North-East Normal University affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=5 en-affil= kn-affil=Faculty of Engineering, Fukuyama University affil-num=6 en-affil= kn-affil=Faculty of Bioresource, Mie University END start-ver=1.4 cd-journal=joma no-vol=24 cd-vols= no-issue=1 article-no= start-page=73 end-page=80 dt-received= dt-revised= dt-accepted= dt-pub-year=1989 dt-pub=19891129 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of Microvibration on the Skin Surface en-subtitle= kn-subtitle= en-abstract= kn-abstract=There is a small vibration which goes undetected by the naked eyes. It is called a microvibration (MV) or a minor tremor (MT). The MV on the body surface is expected to apply to a clinical examination of the autonomic nervous system. It is not cleared why and how the MV occurs, but there are many papers about its occurrence and clinical application. In this study, MV measuring system, its estimation and basic characteristics are examined. The difference between head MV and thenar MV, individual MV and diurnal and seasonal change are discussed. The power spectrum of MV is obtained using an autoregressive model. en-copyright= kn-copyright= en-aut-name=OkaHisao en-aut-sei=Oka en-aut-mei=Hisao kn-aut-name=‰ª‹v—Y kn-aut-sei=‰ª kn-aut-mei=‹v—Y aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=IsayamaYoshiharu kn-aut-sei=Isayama kn-aut-mei=Yoshiharu aut-affil-num=2 ORCID= en-aut-name=YamamotoYoshitake en-aut-sei=Yamamoto en-aut-mei=Yoshitake kn-aut-name=ŽR–{®• kn-aut-sei=ŽR–{ kn-aut-mei=®• aut-affil-num=3 ORCID= en-aut-name=YamamotoTatsuma en-aut-sei=Yamamoto en-aut-mei=Tatsuma kn-aut-name=ŽR–{’C”n kn-aut-sei=ŽR–{ kn-aut-mei=’C”n aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=3 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=4 en-affil= kn-affil=Department of Electrical and Electronic Engineering END start-ver=1.4 cd-journal=joma no-vol=33 cd-vols= no-issue=1 article-no= start-page=19 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=19981130 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Measurement of saturated solubilities and diffusion coefficients of pure gases to mineral oil en-subtitle= kn-subtitle= en-abstract= kn-abstract=The present paper deals with measurements of the diffusion coefficients as well as the saturated solubilities of single component gases such as N(2), O(2) and CO(2) to a mineral oil. The method to determine the diffusivity is based upon measuring the pressure changes caused by the one-dimensional diffusion between the gas and the oil enclosed in an airtight container. For N(2) and O(2) the profiles of the measured pressure changes agree well with those predicted by diffusion theory, whereas that is not the case with CO(2). Although the reason why CO(2) does not seem to obey diffusion theory has yet to be studied, it may suggest the possibility that the diffusion coefficient varies with the pressure, considering that the range of pressure change in the diffusivity measurement was much obtained by this method fell within }30% around the average. Moreover the solubility measurements have made clear that Henry's law holds true between the three pure gases and the oils tested, and that O(2) and CO(2) dissolve into the oil approximately two and ten times more, respectively, than N(2). en-copyright= kn-copyright= en-aut-name=WashioSeiichi en-aut-sei=Washio en-aut-mei=Seiichi kn-aut-name=˜h”ö½ˆê kn-aut-sei=˜h”ö kn-aut-mei=½ˆê aut-affil-num=1 ORCID= en-aut-name=TakahashiSatoshi en-aut-sei=Takahashi en-aut-mei=Satoshi kn-aut-name=‚‹´’q kn-aut-sei=‚‹´ kn-aut-mei=’q aut-affil-num=2 ORCID= en-aut-name=ImotoChikashi en-aut-sei=Imoto en-aut-mei=Chikashi kn-aut-name=ˆäŒ³’q‰ÂŽŠ kn-aut-sei=ˆäŒ³ kn-aut-mei=’q‰ÂŽŠ aut-affil-num=3 ORCID= en-aut-name=YoshidaAtsumasa en-aut-sei=Yoshida en-aut-mei=Atsumasa kn-aut-name=‹g“c“ij kn-aut-sei=‹g“c kn-aut-mei=“ij aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Machanical Engineering affil-num=2 en-affil= kn-affil=Department of Machanical Engineering affil-num=3 en-affil= kn-affil=Kayaba Industry Co., Ltd. affil-num=4 en-affil= kn-affil=Department of Machanical Engineering END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=1 end-page=8 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Mechanical Characteristics of Cast Ti Fiber-Reinforced Mg Composite en-subtitle= kn-subtitle= en-abstract= kn-abstract=Tensile strength and elongation of cast magnesium reinforced with titanium fiber were measured by tensile test. The pull-out test of a titanium rod partially embedded in a magnesium matrix was performed to evaluate interfacial bonding strength between magnesium and titanium. It was found that when the fiber volume fraction was changed from 1% to 14%, the tensile strength was improved with increase of volume fraction, while the improvement of elongation tended to be restrained beyond the volume fraction of 10%. The interfacial strength was revealed to be strong, and this was substantiated by the scanning electron microscopy showing an excellent wettability between the titanium fiber and the magnesium matrix. en-copyright= kn-copyright= en-aut-name=OkadaHiroyuki en-aut-sei=Okada en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=HidaMoritaka en-aut-sei=Hida en-aut-mei=Moritaka kn-aut-name=”ò“cŽçF kn-aut-sei=”ò“c kn-aut-mei=ŽçF aut-affil-num=2 ORCID= en-aut-name=SakakibaraAkira en-aut-sei=Sakakibara en-aut-mei=Akira kn-aut-name=匴¸ kn-aut-sei=匴 kn-aut-mei=¸ aut-affil-num=3 ORCID= en-aut-name=TakemotoYoshito en-aut-sei=Takemoto en-aut-mei=Yoshito kn-aut-name=’|Œ³‰Ã—˜ kn-aut-sei=’|Œ³ kn-aut-mei=‰Ã—˜ aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Department of Mechanical Engineering affil-num=2 en-affil= kn-affil=Department of Mechanical Engineering affil-num=3 en-affil= kn-affil=Department of Mechanical Engineering affil-num=4 en-affil= kn-affil=Department of Mechanical Engineering END start-ver=1.4 cd-journal=joma no-vol=40 cd-vols= no-issue=1 article-no= start-page=31 end-page=35 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200601 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Melting of Spherical Yukawa Clusters Analyzed by Monte CarloSimulation en-subtitle= kn-subtitle= en-abstract= kn-abstract=We analyze the melting of spherical Yukawa clusters by Monte Carlo simulations. Spherical clusters are expected to be found in dusty plasmas in an isotropic environment such as microgravity and serve as a model for classical clusters. We obtain the specific heat through fluctuations of the potential energy and identify its peak as the transition temperature. Melting temperatures are compared with those of bulk Yukawa systems and it is confirmed that the melting temperature increases and approaches the bulk value with the increase of the system size. en-copyright= kn-copyright= en-aut-name=OgawaTakafumi en-aut-sei=Ogawa en-aut-mei=Takafumi kn-aut-name=¬ì‹MŽj kn-aut-sei=¬ì kn-aut-mei=‹MŽj aut-affil-num=1 ORCID= en-aut-name=TotsujiChieko en-aut-sei=Totsuji en-aut-mei=Chieko kn-aut-name=“Œ’ÒçŽ}Žq kn-aut-sei=“Œ’Ò kn-aut-mei=çŽ}Žq aut-affil-num=2 ORCID= en-aut-name=TsurutaKenji en-aut-sei=Tsuruta en-aut-mei=Kenji kn-aut-name=’ß“cŒ’“ñ kn-aut-sei=’ß“c kn-aut-mei=Œ’“ñ aut-affil-num=3 ORCID= en-aut-name=TotsujiHiroo en-aut-sei=Totsuji en-aut-mei=Hiroo kn-aut-name=“Œ’Ò_•v kn-aut-sei=“Œ’Ò kn-aut-mei=_•v aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=2 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=3 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University affil-num=4 en-affil= kn-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University END start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=2 article-no= start-page=111 end-page=128 dt-received= dt-revised= dt-accepted= dt-pub-year=1992 dt-pub=19920328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Memory Search using Genetic Algorithms and a Neural Network Model en-subtitle= kn-subtitle= en-abstract= kn-abstract=An information processing task which generates combinatorial explosion and program complexity when it is treated by a serial algorithm is investigated using both Genetic Algorithms (GA) and a neural network model (NN). The task in question is to find a target memory from a set of stored entries in the form of "attractors" in a high dimensional state space. The representation of entries in the memory is distributed ("an auto associative neural network" in this paper), and the problem is to find an attractor under a given access information where the uniqueness or even existence of a solution is not always guaranteed ( an ill-posed problem ). The GA is used as an algorithm for generating a search orbit to search effectively for a state which satisfies the access condition and belongs to the target attractor basin in state space. The NN is used to retrieve the corresponding entry from the network. The results of our computer simulation indicate that the present method is superior to a search method which uses random walk in state space. Our technique may prove useful in the realization of flexible and adaptive information processing, since pattern search in high dimensional state spaces is common in various kinds of parallel information processing. en-copyright= kn-copyright= en-aut-name=NaraShigetoshi en-aut-sei=Nara en-aut-mei=Shigetoshi kn-aut-name=“Þ—Çdr kn-aut-sei=“Þ—Ç kn-aut-mei=dr aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=BanzhafWolfgag kn-aut-sei=Banzhaf kn-aut-mei=Wolfgag aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Electrical and Electronic Engineering affil-num=2 en-affil= kn-affil=Central Research Laboratory, Mitsubishi Electric Corporation END start-ver=1.4 cd-journal=joma no-vol=25 cd-vols= no-issue=2 article-no= start-page=123 end-page=133 dt-received= dt-revised= dt-accepted= dt-pub-year=1991 dt-pub=19910328 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Mesh Generation for Convex 3-Dimensional Domain en-subtitle= kn-subtitle= en-abstract= kn-abstract=The aim of this investigation is the proposal of 3D mesh generation method based on the Delaunay triangulation. The method is valid for the finite element modelling of any convex 3D domain into tetrahedra with optimum geometrical configuration. This paper includes the mathematical background of the mesh generation method, its detail, proposal of some efficient tools for faster and more rigorous computations, and some examples of the mesh generation. en-copyright= kn-copyright= en-aut-name=TaniguchiTakeo en-aut-sei=Taniguchi en-aut-mei=Takeo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=OhtaChikashi en-aut-sei=Ohta en-aut-mei=Chikashi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=Department of Engineering Science affil-num=2 en-affil= kn-affil=Department of Civil Engineering END start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue=1 article-no= start-page=20 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200701 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Method for Production Planning and Inventory Control in OilRenery en-subtitle= kn-subtitle= en-abstract= kn-abstract=In this paper, we propose a simultaneous optimization method for inventory control and production planning problem for a chemical batch plant. The plant consists of blending process, intermediate storage tanks and filling process. In the proposed method, the original problem is decomposed into production planning sub-problem and inventory control sub-problem. Then the decision variables are optimized by alternately solving each sub-problem. The solution of the proposed method is compared with that of centralized optimization method. The effectiveness of the proposed method is investigated from numerical computational results. en-copyright= kn-copyright= en-aut-name=ImamuraTakuji en-aut-sei=Imamura en-aut-mei=Takuji kn-aut-name=¡‘º‘ñŽi kn-aut-sei=¡‘º kn-aut-mei=‘ñŽi aut-affil-num=1 ORCID= en-aut-name=KonishiMasami en-aut-sei=Konishi en-aut-mei=Masami kn-aut-name=¬¼³çZ kn-aut-sei=¬¼ kn-aut-mei=³çZ aut-affil-num=2 ORCID= en-aut-name=ImaiJun en-aut-sei=Imai en-aut-mei=Jun kn-aut-name=¡ˆäƒ kn-aut-sei=¡ˆä kn-aut-mei=ƒ aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=2 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University affil-num=3 en-affil= kn-affil=Division of Electronic and Information System Engineering Graduate School of Natural Science and Technology Okayama University END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue=1-2 article-no= start-page=155 end-page=161 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Methods for Tele-Operation of Mobile Type Maintenance Robot en-subtitle= kn-subtitle= en-abstract= kn-abstract=This paper proposes a concept of a mobile type maintenance robot (MMR in shortly) that is controlled by the tele-operation for assuring the safety and health improvement of work forces. The main components of this system are the industrial robot, an image processing unit, vehicle and computers for tele-operation. Our focus is paid on a method that determine a pathway to move every places where troubles would occur. This method makes it possible that the MMR could arrive any place in the factory with three times of turns at most. Additionally, turning radius of the vehicle is considered for correcting the pathway near the corners to make it possible that it arrives to the place accurately. en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=TakahashiHiromitsu kn-aut-sei=Takahashi kn-aut-mei=Hiromitsu aut-affil-num=1 ORCID= en-aut-name=MunesawaYoshiomi en-aut-sei=Munesawa en-aut-mei=Yoshiomi kn-aut-name=@àV—Çb kn-aut-sei=@àV kn-aut-mei=—Çb aut-affil-num=2 ORCID= en-aut-name=KajiharaYasuhiro en-aut-sei=Kajihara en-aut-mei=Yasuhiro kn-aut-name=ŠŒ´N”Ž kn-aut-sei=ŠŒ´ kn-aut-mei=N”Ž aut-affil-num=3 ORCID= en-aut-name=OsakiHirokazu en-aut-sei=Osaki en-aut-mei=Hirokazu kn-aut-name=‘åèhˆê kn-aut-sei=‘åè kn-aut-mei=hˆê aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=WadaYatarou kn-aut-sei=Wada kn-aut-mei=Yatarou aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=Department of Systems Engineering affil-num=2 en-affil= kn-affil=Department of Systems Engineering affil-num=3 en-affil= kn-affil=Department of Systems Engineering affil-num=4 en-affil= kn-affil=Department of Systems Engineering affil-num=5 en-affil= kn-affil=Department of Systems Engineering END