Electronics and Communications in Japan (Part II: Electronics)最新文献

A computer simulation of relative backscattering coefficients of sea surfaces in satellite altimetry 卫星测高中海面相对后向散射系数的计算机模拟

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-12-01 DOI: 10.1002/ECJB.20428

K. Fukuda, K. Fujisaki, M. Tateiba

引用次数: 4

Time series prediction model for sequential learning 时序学习的时间序列预测模型

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-12-01 DOI: 10.1002/ECJB.20406

M. Gouko, Yoshihiro Sugaya, H. Aso

{"title":"Time series prediction model for sequential learning","authors":"M. Gouko, Yoshihiro Sugaya, H. Aso","doi":"10.1002/ECJB.20406","DOIUrl":"https://doi.org/10.1002/ECJB.20406","url":null,"abstract":"As a time series prediction model for sequential learning considering memory size limitations, this paper proposes the Adaptive and Sequential Learning Network (ASLN) model. The proposed model sequentially memorizes time sequence information given as the input and then performs prediction based on the memory. While effective use of the memory capacity is attempted for changes in the ambient environment, the model can follow up by varying its own memory. The model memorizes the elements contained in the input time series and the information on their transitions. It identifies the elements with a higher frequency of inputs among the time series and memorizes them as priority items. Information on the transitions of the input elements is represented as a state vector and is memorized by a layered neural network. The state vector maintains information on the past input sequence so that expression of the context is possible. A numerical experiment shows that the proposed model can predict a time series while tracking environmental changes. An experiment on learning of a number sequence was performed, using handwritten number patterns containing fluctuations. The prediction capability was verified with an increasing number of patterns. Guidelines are also provided for setting of parameters, which is important when the model memorizes the transition information of the time series. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 129–139, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20406","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"22 1","pages":"129-139"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81115680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effectiveness of an evolutionary algorithm for the multi‐objective rectangular packing problem 多目标矩形布局问题的一种进化算法的有效性

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-12-01 DOI: 10.1002/ECJB.20427

Shinya Watanabe, T. Hiroyasu, M. Miki

{"title":"Effectiveness of an evolutionary algorithm for the multi‐objective rectangular packing problem","authors":"Shinya Watanabe, T. Hiroyasu, M. Miki","doi":"10.1002/ECJB.20427","DOIUrl":"https://doi.org/10.1002/ECJB.20427","url":null,"abstract":"This paper considers the rectangular packing problem and investigates the effectiveness of the neighborhood cultivation genetic algorithm (NCGA). NCGA, which we proposed, is a new algorithm in which the unique mechanism of neighborhood crossover is combined with effective mechanisms for search in multi-objective GA proposed in the past. The effectiveness of the proposed method in typical test problems has already been investigated with satisfactory results in past studies. The rectangular packing problem, on the other hand, is applied to floor planning, such as chip area minimization in large-scale integrated circuits. It is a kind of discrete combinatorial problem in which it is known that the search is difficult and a very long time is required until the solution is obtained. This paper formulates the rectangular packing problem as a multi-objective problem with the vertical and horizontal lengths of the placement configuration as the objectives. The sequence-pair is used as the block placement representation, and PPEX is used as the crossover procedure. Using these processes, the effectiveness of NCGA is investigated. For comparison, three other methods—NSGA-II, SPEA2, and non-NCGA (NCGA without neighborhood crossover)—are investigated. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 111–120, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20427","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"5 1","pages":"111-120"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89812823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Learning of color transformation considering local illumination changes for interactive object recognition 考虑局部光照变化的交互式物体识别颜色变换学习

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-12-01 DOI: 10.1002/ECJB.20426

Yasushi Makihara, Y. Shirai, N. Shimada

引用次数: 0

Time series prediction model for sequential learning 时序学习的时间序列预测模型

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20406

Manabu Gouko, Yoshihiro Sugaya, Hirotomo Aso

{"title":"Time series prediction model for sequential learning","authors":"Manabu Gouko, Yoshihiro Sugaya, Hirotomo Aso","doi":"10.1002/ecjb.20406","DOIUrl":"https://doi.org/10.1002/ecjb.20406","url":null,"abstract":"As a time series prediction model for sequential learning considering memory size limitations, this paper proposes the Adaptive and Sequential Learning Network (ASLN) model. The proposed model sequentially memorizes time sequence information given as the input and then performs prediction based on the memory. While effective use of the memory capacity is attempted for changes in the ambient environment, the model can follow up by varying its own memory. The model memorizes the elements contained in the input time series and the information on their transitions. It identifies the elements with a higher frequency of inputs among the time series and memorizes them as priority items. Information on the transitions of the input elements is represented as a state vector and is memorized by a layered neural network. The state vector maintains information on the past input sequence so that expression of the context is possible. A numerical experiment shows that the proposed model can predict a time series while tracking environmental changes. An experiment on learning of a number sequence was performed, using handwritten number patterns containing fluctuations. The prediction capability was verified with an increasing number of patterns. Guidelines are also provided for setting of parameters, which is important when the model memorizes the transition information of the time series. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 129–139, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20406","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"129-139"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91829376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Model generation interface for simulation of left ventricular motion 模拟左心室运动的模型生成界面

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20425

Akira Amano, Kenichi Kanda, Tsukasa Shibayama, Yuu Kamei, Tetsuya Matsuda

{"title":"Model generation interface for simulation of left ventricular motion","authors":"Akira Amano, Kenichi Kanda, Tsukasa Shibayama, Yuu Kamei, Tetsuya Matsuda","doi":"10.1002/ecjb.20425","DOIUrl":"https://doi.org/10.1002/ecjb.20425","url":null,"abstract":"In the field of life science, a tremendous amount of quantitative data related to biological systems continues to accumulate. There are still many aspects of biological phenomena which are not fully analyzed, due to interaction between various phenomena and mechanisms. The simulation technique provides useful approaches to the analysis of such phenomena, in which the model describing the phenomenon and the model parameters are adjusted. Usually, however, simulation models for biological functions are very complex, and a tremendous amount of time is required in comprehensively adjusting the model and its parameters and then evaluating the simulation results. This study aims at construction of a model for the left ventricular motion, and considers the left ventricular shape model, the cell orientation model, and the coronary artery model as its components. An interface is constructed by which the above models and the model parameters can be adjusted. Using this interface, it is possible to evaluate the simulation model efficiently. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 87–98, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20425","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"87-98"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20425","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91829374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Performance improvement approach for dependable computing system with optical voting circuit 具有光投票电路的可靠计算系统性能改进方法

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20422

Yoshimitsu Yanagawa, Takuya Takahara, Takahide Mizuno, Hirobumi Saito

{"title":"Performance improvement approach for dependable computing system with optical voting circuit","authors":"Yoshimitsu Yanagawa, Takuya Takahara, Takahide Mizuno, Hirobumi Saito","doi":"10.1002/ecjb.20422","DOIUrl":"10.1002/ecjb.20422","url":null,"abstract":"This paper proposes a new voting method using light that makes possible the realization of a high-performance computing system equipped with both flexibility and dependability. Soft errors inside computers due to terrestrial radiation have become a problem in recent years. We have proposed a highly dependable triple voting-type computing system that can be used even in the strong radiation environment of space. While this system uses reconfigurable SRAM-based FPGA to achieve high flexibility, the system operation speed was limited by synchronization problems in voting circuits located on parallel buses, and by the bottleneck of a limited upper speed for the radiation-tolerant device used in the voting logic circuit. As a result, we study the use of a serial bus, and propose a voting circuit using light that is suitable for a high-speed serial bus. This optical voting circuit is highly compatible with the high-speed serial interfaces provided on recent FPGAs, and is easily configurable using existing optical communications devices. In operations tests using an optical communications module, we obtained voting performance at a 1 Gbit/s communication speed, and estimated that the upper speed limit for the test system is 2.14 Gbit/s. Use of a higher speed optical communication module and circuit optimization should make it possible to achieve even higher speeds. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 35–46, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20422","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"35-46"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20422","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81519515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dynamic background extraction method for indoor intruder detection 一种用于室内入侵者检测的动态背景提取方法

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20424

Ryuya Shimada, Naohiro Kawaguchi, Kenta Kaga, Hiromitsu Yamada, Terunori Mori

{"title":"A dynamic background extraction method for indoor intruder detection","authors":"Ryuya Shimada, Naohiro Kawaguchi, Kenta Kaga, Hiromitsu Yamada, Terunori Mori","doi":"10.1002/ecjb.20424","DOIUrl":"10.1002/ecjb.20424","url":null,"abstract":"With recent increases in criminal activity, research and development efforts are required for detection of intruders. This paper proposes an element technique for developing a cheap intruder detection system with high performance. The following three functions are developed in this study. (1) The system can deal with smooth changes of illumination, including movement of the light source. (2) For a slowly moving intruder, the region of presence is clearly detected. (3) For an intruder pausing his movement, the region of presence is clearly detected. Functions (1) and (2) are apparently contradictory. The basic idea of the method is to detect the region of presence of the intruder based on the difference image between the background image without the intruder and the present input image. The crucial point then is how to update accurately and simply the present background image, and there has been no method that realizes the above three functions at the same time. In contrast, we realized these functions by an approach in which weighted averaging is not applied to the detected intruder region and its boundary in the background image. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 61–76, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20424","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"61-76"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20424","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90780973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A computer simulation of relative backscattering coefficients of sea surfaces in satellite altimetry 卫星测高中海面相对后向散射系数的计算机模拟

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20428

Kazunobu Fukuda, Kiyotaka Fujisaki, Mitsuo Tateiba

{"title":"A computer simulation of relative backscattering coefficients of sea surfaces in satellite altimetry","authors":"Kazunobu Fukuda, Kiyotaka Fujisaki, Mitsuo Tateiba","doi":"10.1002/ecjb.20428","DOIUrl":"https://doi.org/10.1002/ecjb.20428","url":null,"abstract":"The purpose of this study is to establish a method for estimating the sea wave period by satellite radar altimetry. The backscatter coefficient, which is closely related to the period, is evaluated by computer simulation. Specifically, the following method is presented. The sea wave is modeled on the basis of the Pierson–Moskowitz spectrum. The average received power is determined by radar altimetry simulation of our proposal. It is shown that the backscatter coefficient of the sea surface can be calculated on a relative basis. Using the data for the relative received power calculated from various sea wave parameters, the relation between the significant wave height and the backscatter coefficient, and also the relation between the significant wavelength and the backscatter coefficient, are derived. Thus, the possibility of observing the sea wave period by using satellite radar altimetry is demonstrated. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 121–128, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20428","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"121-128"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91829377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

An overview and case study of a statistical regression testing method for software maintenance 一种用于软件维护的统计回归测试方法的概述和案例研究

Electronics and Communications in Japan (Part II: Electronics) Pub Date : 2007-11-12 DOI: 10.1002/ecjb.20414

Tomohiko Takagi, Zengo Furukawa, Toshinori Yamasaki

{"title":"An overview and case study of a statistical regression testing method for software maintenance","authors":"Tomohiko Takagi, Zengo Furukawa, Toshinori Yamasaki","doi":"10.1002/ecjb.20414","DOIUrl":"10.1002/ecjb.20414","url":null,"abstract":"We propose a statistical regression testing method for evaluating the reliability of software as part of the software maintenance process. Maintenance procedures take up more than half the time of the software development process; in addition, software reliability is an important factor in determining the dependability of a product. Regression tests are performed in order to conserve or improve software reliability as part of the software maintenance process. However, existing systematic testing methods based on regression tests are not necessarily appropriate for evaluating software reliability. The statistical regression testing method is a means for compensating for the flaws of such existing methods. In this method a model of how the user makes use of the software is defined by means of a Markov chain; this is known as the usage model, and then test cases are generated at random according to a probability distribution based on this usage model. In this paper we perform experiments applying the proposed method to a small-scale client server program and demonstrate that the proposed method can be implemented. In addition, we clarify the effects and issues that may be anticipated when applying the method and establish how it may be used in practice. © 2007 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 90(12): 23–34, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20414","PeriodicalId":100406,"journal":{"name":"Electronics and Communications in Japan (Part II: Electronics)","volume":"90 12","pages":"23-34"},"PeriodicalIF":0.0,"publicationDate":"2007-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ecjb.20414","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83830823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3