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2013 Winter Meeting on Transactions and Embedded Topical Meetings: Risk Management for Complex Socio-Technical systems, 2nd ANS SMR 2013 Conference, Nuclear Nonproliferation - 1st Fission to the Future

作者： Yano, Ayako Tenzou, Hideki Yamashita, Shougo Motoki, Kouhei Division of Mechanical Engineering Department of Mechanical Science and Bioengineering Graduate School of Engineering Science Machikaneyama-cho 1-3 Toyonaka-shi Osaka 560-8531 Japan Konda 551 Takuma-cho Mitoyo-shi Kagawa 769-1192 Japan Advanced Course in Electronics Information and Communication Engineering Electronic Systems Course KNCT Japan

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Optimal maintenance problems based on jump diffusion models considering the operating phase of cloud oss

Optimal maintenance problems based on jump diffusion models ...

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19th ISSAT International Conference on Reliability and Quality in Design, RQD 2013

作者： Miyaoka, Kenta Tamura, Yoshinobu Yamada, Shigeru Department of Social Management Engineering Graduate School of Engineering Tottori University Minami 4-101 Koyama Tottori-shi 680-8552 Japan Department of Electronic and Information System Engineering Graduate School of Science and Engineering Yamaguchi University Tokiwadai 2-16-1 Ube-shi Yamaguchi 755-8611 Japan

ISBN: (纸本)9780976348696

At present, many open source softwares are developed in all parts of the world, e.g., Firefox, Apache HTTP server, Linux, Android, and so on. Open source software is now attracting attention as the next-generation software development paradigm because of the cost reduction, quick delivery, and work saving. We focus on a cloud computing environment by using open source softwares such as OpenStack and Eucalyptus because of the unification management of data and low cost. A cloud computing is attracting attention as a network service to share the computing resources, i.e., networks, servers, storage, applications, and services. We propose jump diffusion models based on stochastic differential equations in order to consider the interesting aspect of the provisioning process. Moreover, we formulate a total expected software cost based on the proposed jump diffusion model for the environment of cloud computing. Then, we discuss the determination of optimum software maintenance times minimizing the total expected software cost.

关键词： Open source software

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AIR application based on jump diffusion models for cloud computing

AIR application based on jump diffusion models for cloud com...

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19th ISSAT International Conference on Reliability and Quality in Design, RQD 2013

作者： Tamura, Yoshinobu Yamada, Shigeru Department of Electronic and Information System Engineering Graduate School of Science and Engineering Yamaguchi University Tokiwadai 2-16-1 Ube-shi Yamaguchi 755-8611 Japan Department of Social Management Engineering Graduate School of Engineering Tottori University Minami 4-101 Koyama Tottori-shi 680-8552 Japan

ISBN: (纸本)9780976348696

A cloud computing environment by using open source softwares such as OpenStack and Eucalyptus is now attracting attention as a network service to share the computing resources, because of the uniffication management of data and low cost. We develop a reliability analysis tool based on the jump diffusion models in order to consider the interesting aspect of the provisioning process of cloud computing. In par-ticular, the reliability analysis tool for cloud comput-ing is developed under the user experience design. Also, we analyze actual data to show numerical illus-trations of application of the software analysis tool considering the characteristics of cloud computing.

关键词： Cloud computing

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Trend analysis based on historical data for OSS reliability assessment

Trend analysis based on historical data for OSS reliability ...

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19th ISSAT International Conference on Reliability and Quality in Design, RQD 2013

作者： Miyahara, Hirona Tamura, Yoshinobu Yamada, Shigeru Department of Social Management Engineering Graduate School of Engineering Tottori University Minami 4-101 Koyama Tottori-shi 680-8552 Japan Department of Electronic and Information System Engineering Graduate School of Science and Engineering Yamaguchi University Tokiwadai 2-16-1 Ube-shi Yamaguchi 755-8611 Japan

ISBN: (纸本)9780976348696

The current software development environment has been changing into new development paradigms such as concurrent distributed development environment and the so-called open source project by using network computing technologies. Especially, open source software systems which serve as key components of critical infrastructures in our society are still ever-expanding now. At present, many open source softwares are developed in all parts of the world, e.g., Firefox, Apache HTTP server, Linux, Android, and so on. Open source software is now attracting attention as the next-generation software development paradigm because of the cost reduction, quick delivery, and work saving. We focus on open source software developed under the open source project. In case of considering the effect of the human factors on an entire system in the development of a method of reliability assessment for open source project, it is necessary to grasp the deeply-intertwined factors, such as size of each component, level of detected faults, and skill of fault reporters which are reported and recorded in the bugtracking system. In order to consider the effect of each human factor on the reliability of an entire system under such open source software, we propose a new approach to software reliability assessment by using analysis of variance. Also, we analyze actual software fault-count data to show numerical examples of software reliability assessment for the open source software. Moreover, this paper shows that the proposed method of reliability analysis can assist quality improvement for the open source software project.

关键词： Open source software

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Experimental study on odor intensity and quality from wood materials in oxidative pyrolysis

Bulletin of Japan Association for Fire Science and Engineeri...

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Bulletin of Japan Association for Fire science and engineering 2013年第2期63卷 25-35页

作者： Kamiya, Kyoko Sugawa, Osami Imamura, Tomohiko Oka, Yasushi Graduate School of Environment and Information Sciences Yokohama National University 79-7Tokiwadai Hodogaya-ku Yokohama Kanagawa240-8501 Japan Faculty of System Engineering Department of Mechanics Design Tokyo University of Science 5000-1 Toyohira Suwa Chino Nagano391-0292 Japan Faculty of Environment and Information Science Safety Management Course Yokohama National University 79-7Tokiwadai Hodogaya-ku Yokohama Kanagawa240-8501 Japan

It is well known that a scorched odor is emitted from combustible materials undergoing oxidative pyrolysis and/or combustion reactions. In the present study, 15 kinds of domestic woods were selected consisting of six kinds of broad-leaved trees, eight kinds of conifer trees, and one kind of bamboo, and those were used as test samples with the pure cellulose as the reference. TG-DTA system was employed as the device that heats the sample up under the specific conditions. The sample was heated under the air (G3) condition from ambient temperature to 500°C at the rate of2K/min to clarify therelation between the change in quality of odors and the temperature during oxidative pyrolysis. The generated gas was collected in a sampling bag which was attached to the exhaust port of a TG-DTA system, and thequality of odor was measured using electronic noses. The weight of the wood materials decreased approximately 95% in the range of approximately 200 °C to 500 °C due to thermal and oxidative decomposition. The ratios of similarity indices ((aldehyde)/(ammonia) and (aldehyde)/(hydrogen sulfide)) showed rapid increase during the progression of combustion and/or oxidative thermal decomposition, and which would be the important signals for the fire detection system. This property did not take the influence of a water content and kind of woods.

关键词： Aldehydes

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Optimizing objective function parameters for strength in computer game-playing

Optimizing objective function parameters for strength in com...

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27th AAAI Conference on Artificial Intelligence, AAAI 2013

作者： Sato, Yoshikuni Miwa, Makoto Takeuchi, Shogo Takahashi, Daisuke Advanced Research Technology Laboratories Graduate School of Systems and Information Engineering University of Tsukuba Japan NaCTeM School of Computer Science University of Manchester United Kingdom JST ERATO Minato Discrete Structure Manipulation System Project United States Faculty of Engineering Information and Systems University of Tsukuba Japan

ISBN: (纸本)9781577356158

The learning of evaluation functions from game records has been widely studied in the field of computer game-playing. Conventional learning methods optimize the evaluation function parameters by using the game records of expert players in order to imitate their plays. Such conventional methods utilize objective functions to increase the agreement between the moves selected by game-playing programs and the moves in the records of actual games. The methods, however, have a problem in that increasing the agreement does not always improve the strength of a program. Indeed, it is not clear how this agreement relates to the strength of a trained program. To address this problem, this paper presents a learning method to optimize objective function parameters for strength in game-playing. The proposed method employs an evolutionary learning algorithm with the strengths (Elo ratings) of programs as their fitness scores. Experimental results show that the proposed method is effective since programs using the objective function produced by the proposed method are superior to those using conventional objective functions. © 2013, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Computer games

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Considerations on a multi-user MIMO system using channel prediction based on an AR model

Considerations on a multi-user MIMO system using channel pre...

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2013 IEEE Antennas and Propagation Society International Symposium, APSURSI 2013

作者： Yamaguchi, Kanako Bui, Huu Phu Ogawa, Yasutaka Nishimura, Toshihiko Ohgane, Takeo Graduate School of Information Science and Technology Hokkaido University Sapporo Japan National Key Lab of Digital Control and System Engineering University of Technology Vietnam National University Hochiminh City Viet Nam

ISBN: (纸本)9781467353175

We consider a multi-user multiple-input multiple-output (MIMO) system using block diagonalization and eigenbeam-space division multiplexing to suppress inter-user interference and inter-stream interference. In time-varying environments, the performance seriously degrades due to mistracking of beamforming. A channel prediction scheme can eliminate the effect of the time-varying environments. In this paper, using indoor measurement data, we evaluate the bit error rate (BER) performance of a multi-user MIMO system with channel prediction based on an autoregressive model. It is shown that the proposed channel prediction technique can improve the BER performance significantly. © 2013 IEEE.

关键词： Bit error rate

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Train ride simulation using assist strap device

Train ride simulation using assist strap device

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15th International Conference on Human Interface and the Management of information: information and Interaction for Health, Safety, Mobility and Complex Environments, HCI 2013

作者： Sasaki, Takashi Hirota, Koichi Amemiya, Tomohiro Ikei, Yasushi Department of Mechanical Engineering University of Tokyo Japan Graduate School of Interdisciplinary Information Studies University of Tokyo Japan NTT Communication Science Laboratories NTT Corporation Japan Faculty of System Design Tokyo Metropolitan University Japan

ISBN: (纸本)9783642392146

This paper describes an approach to implementing a train ride simulation system that is aimed at application to museum exhibits. A novel device was developed that presents the vehicle motion to a user in the standing state through the floor and assist strap. The prototype device has two degrees of freedom that enable horizontal translation of the floor and the strap. Using the device, a control algorithm to represent the lateral acceleration and rolling was investigated. An experiment proved that the change of track curvature presented by the algorithm can be recognized by the subject. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Floors

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Development of tourism information systems

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, information and systems 2013年第3期133卷 562-566页

作者： Matsuo, Tokuro Samejima, Masaki Hashimoto, Kiyota Advanced Institute of Industrial Technology 1-10-40 Higashi-Oi Shinagawa-ku Tokyo 140-0011 Japan Department of Multimedia Engineering Graduate School of Information Science and Technology Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan College of Knowledge and Information Systems School Sustainable System Sciences Osaka Prefecture University 1-1 Gakuen-cho Naka-ku Sakai Osaka 599-8531 Japan

This article describes innovations in tourism information systems and their changing after the Internet technologies have appeared. Airline companies in United States started to provide computer reservation system to be made air ticket reservation and to be confirmed their seats in the aircraft. These systems were provided to travel agency to help their business. After around 2000, as the Internet develops, the tourism information systems have been becoming an increasingly development for B2C. Recent research contributions are including innovative user support;user preferences on the web can be analyzed by data mining technology;and the system make a travel plan based on users' preferences. © 2013 The Institute of Electrical Engineers of Japan.

关键词： Data mining

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Fundamental study to consider for evaluation of a welfare device 6

Fundamental study to consider for evaluation of a welfare de...

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6th International Conference on Advances in Computer-Human Interactions, ACHI 2013

作者： Inoue, Hiroaki Takahashi, Noboru Tsuruga, Takeshi Hirai, Nobuhide Watanabe, Eiju Shimizu, Shunji Nara, Hiroyuki Miwakeichi, Fumikazu Kikuchi, Senichiro Kato, Satoshi Tokyo University of Science Suwa Research Course of Engineering/Management Chino-city Japan Hokkaido Institute of Technology Department of Clinical and Rehabilitation Engineering Sapporo-city Japan Jichi Medical University Department of Psychiatry Shimotsukeshi-city Japan Hokkaido University Graduate School of Information Science and Technology Sapporo-city Japan Institute of Statical Mathematics Spatial and Time Series Modeling Group Tachikawa-city Japan

ISBN: (纸本)9781612082509

Recently, Japan (also world-wide countries) has become aged society, and a wide variety welfare device and system have been developed. But evaluation of welfare system and device are limited only stability, intensity and partial operability. So, evaluation of usefulness is insufficient. Evaluation of usefulness is necessity to consider about interaction of human and welfare device. In this paper, we measure load of sitting and standing movement to use EMG (Electoromyogram) and 3D Motion Capture and set a goal to establish objective evaluation method. We think that establishing objective evaluation method is necessity to develop useful welfare device. We examined possibility of assessing load and fatigue from measuring brain activity to use NIRS (Near Infra-Red Spectroscopy). We think that measuring load and fatigue is very important for developing user-friendly welfare device. Idea of universal design is widespread in welfare device and system. Measuring require verification of all generations. But, we performed to measure younger subjects as a first step. We think that younger subjects were observed the significant difference, because they had enough physical function. Considering younger subjects as a benchmark is appropriate for creating evaluation method. © Copyright 2013 IARIA.

关键词： Human computer interaction

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