著者 Tajima, Shigeto| Funabiki, Nobuo| Higashino, Teruo|
抄録 Nowadays, various types of access-points (APs) and hosts such as dedicated APs, laptop personal computers (PCs), and mobile terminals have been used in IEEE802.11 wireless local-area networks (WLANs). As a result, the optimal assignment of holding APs with different types into the network field, depending on the host type distribution, has become another important task to design high-performance WLANs. In this paper, we first define this holding access-point assignment problem as a combinatorial optimisation problem and propose its two-phase heuristic algorithm. Then, since plural partially overlapping channels are available in IEEE802.11 WLANs, we present the channel assignment extension to the APs such that the communication time of the APs is minimised, and the model to estimate the communication time increase by interferences. The effectiveness of our proposal is verified through simulations in six instances using the WIMNET simulator.
キーワード wireless local-area network WLAN holding access-point partially overlapping channel assignment algorithm combinatorial optimisation problem
備考 This fulltext will be available in Apr 2019
発行日 2018-04-10
出版物タイトル International Journal of Space-Based and Situated Computing
8巻
1号
出版者 INDERSCIENCE ENTERPRISES
開始ページ 50
終了ページ 58
ISSN 2044-4893
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン author
DOI 10.1504/IJSSC.2018.091196
Web of Sience KeyUT 000437395700006
関連URL isVersionOf https://doi.org/10.1504/IJSSC.2018.091196
著者 Khin Khin Zaw| Funabiki, Nobuo|
抄録 To advance Java programming educations, we have developed the web-based Java programming learning assistant system (JPLAS) that provides the code writing problem. This problem asks a student to write a source code for a given assignment, where the correctness is verified by running the test code on JUnit. In this paper, we propose a design-aware test code approach for the code writing problem. The design-aware test code tests any important method in the model source code that has the advisable design for the assignment. Thus, by writing a code that can pass it, a student is expected to implement the code with the proper classes/methods in the model code. In evaluations of the proposal, all the students could complete highly qualitative codes for five graph algorithms using the design-aware test codes, where the code quality metrics were measured by metrics plugin for Eclipse.
キーワード Java programming learning assistant system JPLAS design-aware test code JUnit metric plugin breadth-first-search BFS
備考 This fulltext will be available in Dec 2018
発行日 2017-12-29
出版物タイトル International Journal of Space-Based and Situated Computing
7巻
3号
出版者 INDERSCIENCE ENTERPRISES
開始ページ 145
終了ページ 154
ISSN 2044-4893
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン author
DOI 10.1504/IJSSC.2017.089006
関連URL isVersionOf https://doi.org/10.1504/IJSSC.2017.089006