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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Jan Sudeikat Wolfgang Renz Distributed Systems and Information Systems (VSIS) Group Department of Informatics Faculty of Mathematics Informatics and Natural Sciences University of Hamburg Hamburg Germany Multimedia Systems Laboratory (MMLab) Faculty of Engineering and Computer Science Hamburg University of Applied Sciences Hamburg Germany

The systematic conception of decentralized and self-adaptive software systems, as demanded for the run-time management of today’s distributed, multi-tier software architectures, is an active research area. Here, we discuss a coordination architecture that facilitates the enactment of externalized coordination models in Multi-agent Systems (MAS). Coordination is configured by systemic models, i.e. structures of agent-behaviour interdependencies that denote the mutual influences of agent activities. The systematic, iterative application development is supported by a non-intrusive integration approach that enables developers to adjust application dynamics by complementing agent-based applications with systemic coordination models.

关键词： Application software Intelligent agent Software systems Feedback loop computer architecture Multiagent systems Software engineering informatics Collaborative software Conferences

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A contribution to solution for the problem of human controlled object model definition

A contribution to solution for the problem of human controll...

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International Symposium on Applied Machine Intelligence and informatics (SAMI)

作者： Laszlo Horvath Imre J. Rudas Gerhard Hancke Institute of Intelligent Engineering Systems John von Neumann Faculty of Informatics Budapest Tech Budapest Hungary Department of Electrical Electronic and Computer Engineering University of Pretoria Pretoria South Africa

Virtual systems for definition, analysis and application of product models are widely applied in development, production, and application of products. These systems provide outstanding performance in description of product information. At the same time, any modification of earlier decided product information needs contribution from the original decision maker. Otherwise new decision is to be made while the original intent is not available. The authors conceptualized a new modeling method where human intent is stored in the product model as content of modeled information. This content is applied at new decision making. Some aspect of this new modeling is introduced in this paper starting with an introduction to model based product development. Following this, a method is shown for tracking affected engineering object chains by using of change affect zone (CAZ) definition. Next, the authors propose an information content extension to product model. They studied current information based product models, recognized conflict as caused by application of information based product modeling, and decided to complete the information based product model by information content based model. The conflict is in the communication between information based modeling procedures and information content based human. The proposed modeling can be implemented as an extension to functionality and model of professional product lifecycle management (PLM) systems.

关键词： Humans Product development Data mining Application software Decision making Communication system control Automatic control informatics Intelligent systems Systems engineering and theory

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Evaluating resistance of MCML technology to power analysis attacks using a simulation-based methodology

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作者： Regazzoni, Francesco Eisenbarth, Thomas Poschmann, Axel Großschädl, Johann Gurkaynak, Frank Macchetti, Marco Toprak, Zeynep Pozzi, Laura Paar, Christof Leblebici, Yusuf Ienne, Paolo ALaRI University of Lugano Lugano Switzerland Horst Görtz Institute for IT Security Bochum Germany University of Bristol Department of Computer Science Bristol United Kingdom Swiss Federal Institute of Technology ETH Zurich Switzerland Nagracard SA Cheseaux-sur-Lausanne Switzerland School of Engineering EPFL Lausanne Switzerland Faculty of Informatics University of Lugano Lugano Switzerland School of Computer and Communication Sciences EPFL Lausanne Switzerland

ISBN: (纸本)3642010032

This paper explores the resistance of MOS Current MoDe Logic (MCML) against attacks based on the observation of the power consumption. Circuits implemented in MCML, in fact, have unique characteristics both in terms of power consumption and the dependency of the power profile from the input signal pattern. Therefore, MCML is suitable to protect cryptographic hardware from Differential Power Analysis and similar side-channel attacks. In order to demonstrate the effectiveness of different logic styles against power analysis attacks, two full cores implementing the AES algorithm were realized and implemented with CMOS and MCML technology, and a set of different types of attack was performed using power traces derived from SPICE-level simulations. Although all keys were discovered for CMOS, MCML traces did not presents characteristic that can lead to a successful attack. ©Springer-Verlag Berlin Heidelberg 2009.

关键词： Side channel attack

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Resource Retrieval Service to Enhance U-Learning Environment

Resource Retrieval Service to Enhance U-Learning Environment

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International Conference on Ubiquitous Information Technologies and Applications (ICUT)

作者： Neil Y. Yen Louis R. Chao Qun Jin Jianhua Ma Timothy K. Shih Department of Computer Science & Information Engineering Tamkang University Taipei Taiwan Faculty of Computer and Information Sciences Hosei University Japan Department of Human Informatics & Cognitive Sciences Waseda University Tokorozawa Japan Department of Computer Science and Information Engineering Asia University Taichung Taiwan

E-Learning makes it possible for learners to study at any time. With the improvement of ubiquitous technologies and corresponding devices, learners can conduct their learning activities without any limitations from the environment. Instructors can utilize various kinds of resources to create more plentiful learning materials for learners. In this situation, instructors or learners have to spend more time on collecting relevant resources for a specific purpose. In our previous works, we utilized the geographical information and RFID (Radio Frequency Identification) to develop an outdoor adventure game to support learning procedures. In this paper, we go further to propose and develop a resource retrieval mechanism to assist learners in collecting relevant learning resources. This mechanism can be regarded as a search procedure. We aim at providing search results in the order of relevant degree based on learners' current geographical information. It can make resource retrieval more efficient in ubiquitous learning environments.

关键词： Information filtering Electronic learning Information retrieval Radiofrequency identification Information filters Collaboration computer science Pervasive computing Conducting materials Global Positioning System

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A successive method for designing an observer-based strictly positive real H2 controller

A successive method for designing an observer-based strictly...

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Asian Control Conference

作者： Yasushi Kami Kenji Mitsui Eitaku Nobuyama Department of Electrical and Computer Engineering Akashi National College of Technology Hyogo Japan Faculty of Engineering Gifu University Gifu Japan Department of Systems Design and Informatics Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781424454402

This paper is concerned with a strictly positive real H 2 controller design problem using an observer-based controller with Kalman filter gain. In this paper, we propose a successive method with non-common Lyapunov variables for this control problem. The feature of our method is to construct a controller sequence on which H 2 norm is monotonically non-increasingly while all controllers are strictly positive real. A numerical example shows the efficiency of our method.

关键词： Design methodology Control systems Robust stability Hydrogen Optimal control Linear matrix inequalities Closed loop systems Electric variables control Educational institutions State-space methods

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Signal and system representations on hyperbolic groups: Beyond rational orthogonal bases

Signal and system representations on hyperbolic groups: Beyo...

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IEEE 7th International Conference on Computational Cybernetics, ICCC 2009

作者： Soumelidis, Alexandros Bokor, József Schipp, Ferenc Computer and Automation Research Institute Hungarian Academy of Sciences Kende 13-17 Budapest H-1111 Hungary Computer and Automation Research Institute Control Engineering Research Group Hungarian Academy of Sciences Kende 13-17 Budapest H-1111 Hungary Department of Numerical Analysis Faculty of Informatics Eötvös Loránd University Pazmany Peter Setany 1/C Budapest H-1117 Hungary

ISBN: (纸本)9781424453115

This paper investigates signal and system representations in special rational orthogonal bases of the Hardy space H2. These bases are derived from the Blaschke-group associated to the hyperbolic group SH(n) of matrices. Using the concept of the unitary group representations over H 2, and the voice-transform, specific hyperbolic wavelet constructions - Blaschke-wavelets and the associated Blaschke-Fourier transform are constructed. State space representations of systems over hyperbolic groups are discussed, too, with the purpose to explore the perspectives of elaborating a unified system theory upon this conceptual base. ©2009IEEE.

关键词： State space methods

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Robustness and visualization of decision models

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Informatica (Ljubljana) 2009年第3期33卷 385-395页

作者： Bregar, Andrej Györkös, József Jurié, Matjazb Informatika D.d. Vetrinjska ulica 2 SI-2000 Maribor Slovenia University of Maribor Faculty of Electrical Engineering and Computer Science Institute of Informatics Smetanova ulica 17 SI-2000 Maribor Slovenia

Robustness analysis and visualization are two of key concepts of multi-criteria decision support. They enable the decision-maker to improve his understanding of both the model and the problem domain. A class of original mathematical optimization based robustness metrics is hence defined in this paper. In addition, several efficient existing techniques that have been successfully used in various ICT projects are presented. They include the stability intervals/regions and the principal components analysis. All approaches are applied to the multi-attribute utility function, and to the PROMETHEE II and ELECTRE TRI methods. Their benefits are discussed and demonstrated on real life cases.

关键词： Principal component analysis

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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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Construction and analysis of corpus of Japanese classroom lecture speech contents

Construction and analysis of corpus of Japanese classroom le...

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Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference, APSIPA ASC 2009

作者： Tsuchiya, Masatoshi Kogurey, Satoru Nishizakiz, Hiromitsu Yamamotox, Kazumasa Nakagawax, Seiichi Information and Media Center Toyohashi University of Technology Toyohashi 441-8580 Aichi Japan Faculty of Informatics Shizuoka University Hamamatsu 432-8011 Shizuoka Japan Department of Research Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Kofu 400-8511 Yamanashi Japan Department of Information and Computer Sciences Toyohashi University of Technology Toyohashi 441-8580 Aichi Japan

This paper explains our developing Corpus of Japanese classroom Lecture speech Contents (henceforth, denoted as CJLC). Increasing e-Learning contents demand a sophisticated interactive browsing system for themselves, however, existing tools do not satisfy such a requirement. Many researches including large vocabulary continuous speech recognition and extraction of important sentences against lecture contents are necessary in order to realize the above system. CJLC is designed as their fundamental basis, and consists of speech, transcriptions, and slides that were collected in real university classroom lectures.

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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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