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International Workshop on Semantic Media Adaptation and Personalization (SMAP)

作者： Malamati Louta Angelos Michalas Ioannis Anagnostopoulos Department of Informatics and Telematics Harokopio University of Athens Athens Greece Department of Informatics and Computer Technology Technological Educational Institute of Western Macedonia Kastoria Greece Department of Information and Communication Systems Engineering University of Aegean Samos Greece

For the purpose of the SMAP ’09 Special Session on Intelligence, Adaptation and Personalization on the Web, 5 high quality papers authored by 12 researchers from Greece, Spain, Belgium and Slovakia were selected

关键词： Artificial intelligence Programming Web services Materials Education Data mining Ubiquitous computing

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A recommendation method considering users' time series contexts 09

A recommendation method considering users' time series conte...

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3rd International Conference on Ubiquitous Information Management and Communication, ICUIMC'09

作者： Oku, Kenta Nakajima, Shinsuke Miyazaki, Jun Uemura, Shunsuke Kato, Hirokazu Graduate School of Information Science Nara Institute of Science and Technology Ikoma City Nara 630-0101 Japan Faculty of Computer Science and Engineering Kyoto Sangyo University Motoyama Kamigamo Kita-Ku Kyoto-City 603-8555 Japan Department of Informatics Faculty of Informatics Nara Sangyo University 12-1 Tatsuno-kita 3-chome Sango-cho Ikoma-gun Nara 636-8503 Japan

ISBN: (纸本)9781605584058

This paper proposes a recommendation method considering users' time series contexts which are situations that have occurred/will occur in the past/future. There are some recommendation methods that provide information suitable for users' action patterns as the recommendation methods considering them. These methods provide information referring to the other users that have a similar action pattern to that of an active user. However, since a user's action pattern changes depending on the user's contexts, the methods need to refer to the other users' action patterns related to the current user's contexts. In this paper, we propose a recommendation method considering the user's time series contexts considering that the user's action pattern changes depending on the user's contexts. Copyright 2009 ACM.

关键词： Time series

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A fixed-order D-stability controller design with an output feedback using a modified exterior-point approach

A fixed-order D-stability controller design with an output f...

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Asian Control Conference

作者： Takeshi Terada Yasushi Kami Eitaku Nobuyama Department of the Mechanical and Electronic System Engineering Advanced Courses of Akashi National College of Technology Hyogo Japan Department of the Electrical and Computer Engineering Akashi National College of Technology Hyogo Japan Department of Systems Design and Informatics Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781424454402

This paper is concerned with a D-stability controller design problem with a static or a reduced-order output feedback controller. This problem is difficult to be solved theoretically, because it consists of some bilinear matrix inequality's (BMI's). In this paper, an exterior-point approach to this problem, which produces a controller sequence approaching a feasible region from an infeasible one is proposed. The feature of our approach is to be able to use a non-stabilizing controller as an initial point of the sequence. A numerical example shows the efficiency of our approach.

关键词： Output feedback Control systems Electric variables control Linear matrix inequalities Iterative methods Educational institutions Time factors Optimization methods State feedback Systems engineering and theory

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Experimental Results and Evaluation of SmartBox Stimulation Device in a P2P E-learning System

Experimental Results and Evaluation of SmartBox Stimulation ...

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International Conference on Network-Based Information Systems (NBIS)

作者： Keita Matsuo Leonard Barolli Joan Arnedo-Moreno Fatos Xhafa Akio Koyama Arjan Durresi Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer Science Multimedia and Telecommunication Universitat Oberta de Catalunya Barcelona Spain Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Informatics Yamagata University Yonezawa Yamagata Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA

In this paper, we present the experimental results and evaluation of the SmartBox stimulation device in P2P e-learning system which is based on JXTA-Overlay. We also show the design and implementation of the SmartBox environment that is used for stimulating the learners motivation to increase the learning efficiency. The SmartBox is integrated with our P2P system as a useful tool for monitoring and controlling learners' activity. We found by experimental results that the SmartBox is an effective way to increase the learner's concentration. We also investigated the relation between learner's body movement, concentration, and amount of study. From the experimental results, we conclude that the use of SmartBox is an effective way to stimulate the learners in order to continue studying while maintaining the concentration.

关键词： Electronic learning Electronic mail Information security Peer to peer computing Control systems Internet Web server informatics Monitoring Application software

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A combined analytical and simulation-based model for performance evaluation of a reconfigurable instruction set processor

A combined analytical and simulation-based model for perform...

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Asia and South Pacific Design Automation Conference

作者： Farhad Mehdipour Hamid Noori Bahman Javadi Hiroaki Honda Koji Inoue Kazuaki Murakami Faculty of Information Science and Electrical Engineering Kyushu University Japan Institute of Systems Information Technologies and Nanotechnologies Japan Computer Engineering and IT Department Amirkabir University of Technology슠 Iran Department of Informatics Kyushu University Japan

ISBN: (纸本)9781424427482

Performance evaluation is a serious challenge in designing or optimizing reconfigurable instruction set processors. The conventional approaches based on synthesis and simulations are very time consuming and need a considerable design effort. A combined analytical and simulation-based model (CAnSO*) is proposed and validated for performance evaluation of a typical reconfigurable instruction set processor. The proposed model consists of an analytical core that incorporates statistics gathered from cycle-accurate simulation to make a reasonable evaluation and provide a valuable insight. Compared to cycle-accurate simulation results, CAnSO proves almost 2% variation in the speedup measurement.

关键词： Analytical models Performance analysis Computational Intelligence Society Information technology Java Design optimization Information analysis Computational modeling computer simulation Information science

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Foreword to the SMAP '09 special session on intelligence, adaptation and personalization on the web

SMAP '09 - 4th International Workshop on Semantic Media Adap...

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SMAP '09 - 4th International Workshop on Semantic Media Adaptation and Personalization 2009年 97-98页

作者： Louta, Malamati Michalas, Angelos Anagnostopoulos, Ioannis Department of Informatics and Telematics Harokopio University of Athens Athens 17671 Greece Department of Informatics and Computer Technology Technological Educational Institute of Western Macedonia Kastoria 52100 Greece Department of Information and Communication Systems Engineering University of the Aegean Karlovassi 83200 Samos Greece

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A Fuzzy-Based Call Admission Control Scheme for Wireless Cellular Networks Considering Priority of On-going Connections

A Fuzzy-Based Call Admission Control Scheme for Wireless Cel...

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International Conference on Distributed Computing Systems Workshop

作者： Gjergji Mino Leonard Barolli Arjan Durresi Fatos Xhafa Akio Koyama Graduate School of Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Computer and Information Science Indiana University-Purdue University Indianapolis Indianapolis IN USA Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Informatics Yamagata University Yonezawa Yamagata Japan

The mobile cellular systems are expected to support multiple services with guaranteed quality of service (QoS).But, the ability of wireless systems to accommodate expected growth of traffic load and broadband services is limited by available radio frequency spectrum. Call admission control (CAC) is one of the resource management functions, which regulates network access to ensure QoS provisioning. However, the decision for CAC is very challenging issue due to user mobility, limited radio spectrum, and multimedia traffic characteristics. In our previous work, we proposed a fuzzy-based CAC system and compared the performance of the proposed system with shadow cluster concept (SCC). In this work, we extend our work by considering the priority of the on-going connections. We evaluate by simulations the performance of the proposed system and compare its performance with our previous work. The performance evaluation shows that the proposed system has a good behavior in keeping the QoS of on-going connections.

关键词： Call admission control Land mobile radio cellular systems Quality of service Wireless networks Electronic mail Cellular networks Fuzzy logic Distributed computing computer networks informatics

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A Comparison Study of Two Fuzzy-Based Handover Systems for Avoiding Ping-Pong Effect in Wireless Cellular Networks

A Comparison Study of Two Fuzzy-Based Handover Systems for A...

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International Conference on Network-Based Information Systems (NBIS)

Wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. The mobile systems are based on cellular approach and the area is covered by cells that overlap each other. Many handover algorithms are proposed in the literature. However, to make a better handover and keep the QoS in wireless networks is very difficult task. For this reason, new intelligent algorithms should be implemented to deal with this problem. In this paper, we carried out a comparison study of two handover systems based on fuzzy logic. We implement two fuzzy-based handover systems (FBHS). We call them FBHS1 and FBHS2. The performance evaluation via simulations shows that FBHS2 has better behavior than FBHS2 and can avoid ping-pong effect in all simulation cases.

关键词： Land mobile radio cellular systems Electronic mail Wireless networks Fuzzy logic Transceivers informatics Neural networks Information systems computer networks Information science

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Comparative evaluation of spatial context techniques for semantic image analysis

Comparative evaluation of spatial context techniques for sem...

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International Workshop on Image Analysis for Multimedia Interactive Services, WIAMIS

作者： G. Th. Papadopoulos C. Saathoff M. Grzegorzek V. Mezaris I. Kompatsiaris S. Staab M. G. Strintzis Centre of Research & Technology Hellas Informatics and Telematics Institute Thessaloniki Greece Information Processing Laboratory Electrical & Computer Engineering Department Aristotle University of Thessaloniki Thessaloniki Greece Information Systems & Semantic Web Research Group Institute of Computer Science University of Koblenz Koblenz Germany

In this paper, two approaches to utilizing contextual information in semantic image analysis are presented and comparatively evaluated. Both approaches make use of spatial context in the form of fuzzy directional relations. The first one is based on a Genetic Algorithm (GA), which is employed in order to decide upon the optimal semantic image interpretation by treating semantic image analysis as a global optimization problem. On the other hand, the second method follows a Binary Integer Programming (BIP) technique for estimating the optimal solution. Both spatial context techniques are evaluated with several different combinations of classifiers and low-level features, in order to demonstrate the improvements attained using spatial context in a number of different image analysis schemes.

关键词： Image analysis Image segmentation Classification algorithms Information processing Image generation Image retrieval informatics Telematics Information systems Semantic Web

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Using input current and output voltage ripple to estimate the output filter condition of switch mode DC/DC converters

Using input current and output voltage ripple to estimate th...

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IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED)

作者： A. M. R. Amaral A. J. M. Cardoso Department of Informatics and Systems Coimbra Institute of Engineering Coimbra Portugal Instituto de Telecommunicações Coimbra Portugal Department of Electrical and Computer Engineering Faculty of Sciences and Technology Instituto de Telecommunicações University of Coimbra Coimbra Portugal

This paper presents a fault diagnostic technique that is able to estimate the output filter condition of DC/DC boost and buck-boost converters. More than half of the breakdowns in these equipments are mainly due to the output filter capacitor. So, the development of fault diagnostic techniques that can avoid unexpected breakdowns is of paramount importance. The aging of the output filter capacitors is expressed by the increase of their internal resistance, that changes considerable with temperature. The proposed technique uses both input current and output voltage ripple to estimate capacitors internal resistance; for that, a very simple analytical relationship between both waveforms is used. The temperature effect is also considered for evaluating the capacitors condition.

关键词： Switches Voltage Filters DC-DC power converters Capacitors Paramagnetic resonance Aluminum Temperature sensors Capacitance Aging

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