result 18200 件
| Author | Sugano, Hisashi| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Tsuchida, Shohei| |
|---|---|
| Published Date | 1993 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/14087 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_73.pdf |
| Author | Kanatani, Kenichi| |
| Abstract | A rigorous accuracy analysis is given to various techniques for estimating parameters of geometric models from noisy data for computer vision applications. First, it is pointed out that parameter estimation for vision applications is very different in nature from traditional statistical analysis and hence a different mathematical framework is necessary in such a domain. After general theories on estimation and accuracy are given, typical existing techniques are selected, and their accuracy is evaluated up to higher order terms. This leads to a “hyperaccurate” method that outperforms existing methods. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 73 |
| End Page | 92 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308410 |
| JaLCDOI | 10.18926/14086 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_63.pdf |
| Author | Kanatani, Kenichi| Sugaya, Yasuyuki| |
| 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 Taubin’s 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 63 |
| End Page | 72 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308585 |
| Author | Sugano, Hisashi| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/14084 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_52.pdf |
| Author | Inaba, Hideo| Syahrul Husain| Horibe, Akihiko| Haruki, Naoto| |
| 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 52 |
| End Page | 62 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308668 |
| JaLCDOI | 10.18926/14083 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_44.pdf |
| Author | Maeno, Ryota| Konishi, Masami| Imai, Jun| |
| 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 Dijkstra’s algorithm in polynomial computational complexity. The effectivity of the proposed method is verified by numerical experiments for the flowshop schedule problem. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 44 |
| End Page | 51 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308128 |
| JaLCDOI | 10.18926/14081 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_20.pdf |
| Author | Imamura, Takuji| Konishi, Masami| Imai, Jun| |
| 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 20 |
| End Page | 30 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308626 |
| JaLCDOI | 10.18926/14080 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_11.pdf |
| Author | Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| 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. |
| Keywords | irreducible cubic polynomial minimal polynomial |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 11 |
| End Page | 19 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308381 |
| JaLCDOI | 10.18926/14079 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_41_1_1.pdf |
| Author | Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| Abstract | In this paper, we first show the number of x's such that x(2) +u, u ∈ F(*)(p) , becomes a quadratic residue in F(p), and then this number is proven to be equal to (p+1)/2 if −u is a quadratic residue in Fp, which is a necessary fact for the following. With respect to the irreducible cubic polynomials over Fp in the form of x(3)+ax+b, we give a classification based on the trace of an element in F(p3) and based on whether or not the coefficient of x, i.e. the parameter a, is a quadratic residue in Fp. According to this classification, we can know the minimal set of the irreducible cubic polynomials, from which all the irreducible cubic polynomials can be generated by using the following two variable transformations: x=x + i, x=j−1x, i, j ∈ Fp, j ≠ 0. Based on the classification and that necessary fact, we show the number of the irreducible cubic polynomials in the form of x(3)+ax+b, b ∈ F(p), where a is a certain fixed element in F(p). |
| Keywords | Irreducible cubic polynomial trace quadratic residue |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2007-01 |
| Volume | volume41 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 10 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308562 |
| Author | Araki, Kazuhiro| |
|---|---|
| Published Date | 1993 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Tagawa, Shinya| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Okada, Tomiro| |
|---|---|
| Published Date | 1993 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Tagawa, Shinya| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Takeuchi, Ryuzo| |
|---|---|
| Published Date | 1993 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| Author | Ueno, Kunio| |
|---|---|
| Published Date | 1993-12-31 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue11-12 |
| Content Type | Journal Article |
| Author | Itami, Shigeto| |
|---|---|
| Published Date | 1994 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume106 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/14071 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_42_110.pdf |
| Author | Nogami, Yasuyuki| Morikawa, Yoshitaka| |
| 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2008-01 |
| Volume | volume42 |
| Issue | issue1 |
| Start Page | 110 |
| End Page | 114 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308489 |
| Author | Onoda, Yuji| |
|---|---|
| Published Date | 1993 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume105 |
| Issue | issue5-6 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/14069 |
|---|---|
| FullText URL | Mem_Fac_Eng_OU_42_104.pdf |
| Author | Donghui, MA| Torii, Tashiyuki| Shimizu, Kenichi| Matsuba, Akira| |
| Abstract | As model specimens of surface film-bonded materials, pure copper films with a thickness of 100μm 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. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2008-01 |
| Volume | volume42 |
| Issue | issue1 |
| Start Page | 104 |
| End Page | 109 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002308537 |
