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computer Communications 2004年第1期27卷 141-141页

作者： F. Xiang Networks and Distributed System Lab. Department of Electronics and Computer Science The University of Southampton Southampton UK

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AN EFFICIENT MULTI-PURPOSE OPTIMIZATION METHOD FOR QOS ROUTING USING GENETIC ALGORITHM

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Journal of Interconnection networks 2004年第4期5卷 409-428页

作者： AKIO KOYAMA LEONARD BAROLLI GENCI CAPI BERNADY O. APDUHAN JUNPEI ARAI ARJAN DURRESI Department of Informatics Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811- 0295 Japan Department of System Management Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan Department of Intelligent Informatics Kyushu Sangyo University 2-3-1 Matsukadai Higashi-ku Fukuoka 813-8503 Japan Department of Information and Control Engineering Yamagata College of Industry and Technology 1-2-2 Matsuei Yamagata 990-2473 Japan Department of Computer Science Louisiana State University Baton Rouge LA 70803 USA

In order to support multimedia communication, it is necessary to develop routing algorithms that make decisions based on multiple Quality of Service (QoS) parameters. This is because new services such as video on demand and remote meeting systems have multiple QoS requirements. However, the problem of QoS routing is difficult because finding a feasible route with two independent path constraints is NP-complete problem. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multi-purpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that the proposed method has a good performance and therefore is a promising method for QoS routing.

关键词： Broadband networks Genetic Algorithm QoS Routing Multi-purpose Optimization

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MediaFinder: An interface for dynamic personal media management with Semantic Regions

MediaFinder: An interface for dynamic personal media managem...

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Conference on Human Factors in Computing systems, CHI EA 2003

作者： Kang, Hyunmo Shneiderman, Ben Department of Computer Science Institute for System Research University of Maryland College Park MD 20742 United States

ISBN: (纸本)1581136374

computer users deal with large amounts of personal media often face problems in managing and exploring it. This paper presents Semantic Regions, rectangular regions that enable users to specify their semantics or mental models, and the MediaFinder application, which uses Semantic Regions as the basis of a personal media management tool.

关键词： User interfaces

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SROAM: an end-to-end service model for improved performance in roaming over wireless LAN networks

SROAM: an end-to-end service model for improved performance ...

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International Conference on computer networks and Mobile Computing (ICCNMC)

作者： Jun Yuan Chao Liu Xiaoming Li Computer Networks and Distributed System Laboratory Department of Computer Science and Technology Computer Networks and Distrubed System Laboratory Peking University China

ISBN: (纸本)0769520332

Nowadays mobile devices enable users to have various ways to surf on the Internet and broadband communication channels facilitate applications of online multimedia. Most network real-time multimedia applications run on TCP/IP protocol stack. Although several protocols are proposed to handle mobility management on the network layer, real-time stream transmission still suffers from severe roaming interruption and hence playback performance is worsened. The paper analyzes the roaming delay and transmission throughput in detail and evaluates the effect of multiple elements constituting the whole roaming delay. A service codenamed Swift Roaming system (SROAM) is proposed to reduce the roaming delay and increase the average transmission throughput. Some initial experiment results are provided to support the effectiveness of the methods proposed in the system.

关键词： Roaming Wireless LAN Streaming media Protocols Delay effects Throughput Internet Broadband communication Communication channels TCPIP

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ParEs - aparameter-estimation-tool

ParEs - aparameter-estimation-tool

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International Conference on Dependable systems and networks (DSN)

作者： F. Engelhard S. Greiner R. German System Safety Road Vehicles DaimlerChrysler Aerospace Germany Department of Computer Science 7 (Computer Networks and Communication Systems) University of Erlangen-Nuremberg Germany

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Creating Coordination in the Cerebellum Catania, 2–4 October 2003

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The Cerebellum 2004年第1期3卷 39-64页

作者： Andjus, P. R. Zhu, L. Strata, P. Arata, A. Ito, M. Bearzatto, B. Servais, L. Baba-Aïssa, F. de Kerchove d’Exaerde, A. Schurmans, S. Cheron, G. Schiffmann, S. N. Bower, J. M. Devor, A. Burguière, E. Rutteman, M. De Zeeuw, C. I. Berthoz, A. Wiener, S. Rondi-Reig, L. Campana, A. Dusart, I. Wherlé, R. Weitzman, J. Yaniv, M. Sotelo, C. Mariani, J. Cavallari, P. Esposti, R. Cerri, G. Cerminara, N. L. Apps, R. Marple-Horvat, D. E. Wagstaff, J. Dan, B. Chorev, E. Manor, Y. Sohl, G. Willecke, K. Yarom, Y. Philipona, D. Dognin, E. Coenen, O. J. Sola, E. Prestori, F. Rossi, P. Taglietti, V. D’Angelo, E. De Filippi, G. Baldwinson, T. Sher, E. Ekerot, C. Jorntell, H. Fernández, G. Martínez, S. Gall, D. Roussel, C. Forti, L. Schiffmann, S. Gruol, D. L. Netzeband, J. G. Quina, L. A. Blakely Gonzalez, P. K. Hoebeek, F. E. Van Alphen, A. M. Schonewille, M. Frens, M. A. Goossens, H. H. L. M. Stahl, J. Ango, F. di Cristo, G. Hagashiyama, H. Bennett, V. Huang, Z. J. Jörntell, H. Ekerot, C.- F. Launey, T. Endo, S. Sakai, R. Harano, J. Lohof, A. M. Sherrard, R. M. Lu, H. Huang, C. Hartmann, M. J. Marshall, S. P. Lang, E. J. Michikawa, T. Mikoshiba, K. Nitschke, M. F. Erdmann, C. Melchert, U. Arp, T. Sprenger, A. Petersen, D. Kömpf, D. Binkofski, F. Heide, W. Pedroarena, C. Schwarz, C. Parsons, L. M. Schmahmann, J. D. Grill, S. E. Walker, M. S. Petacchi, A. Rokni, D. Saito, S. Kato, K. Sajdel-Sulkowska, E. M. Nguon, K. Selimi, F. Wang, Q. Cristea, I. Chait, B. Heintz, N. Serapide, M. F. Cicirata, F. De Saedeleer, C. Schwaller, B. Swinny, J. D. Ijkema-Paassen, J. Metzger, F. Kalicharan, D. Gramsbergen, A. van der Want, J. J. L. Slemmer, J. E. Weber, J. T. Winkelman, B. H. J. Chédotal, A. De Schutter, E. Maex, R. Koekkoek, S. K. E. Bouslama, L. Ghoumari, A. Ebner, T. Häusser, M. Hawkes, R. Herrup, K. Lisberger, S. G. Mugnaini, E. Nunzi, M. -G. Russo, M. Ptak, K. Orr, H. T. Zoghbi, H. Y. Rossi, F. Ruigrok, T. J. H. Sabel-Goedknegt, E. Simpson, J. I. Morando, L. Cesa, R. Dumoulin, A. Dieudonné, S. Dugué, G. Triller, A. Louvi, A. Alexandre, Department for Neuroscience University of Turin Italy Department of Physiology and Biochemistry School of Biology University of Belgrade Serbia & Montenegro Rita Levi Montalcini Center for Brain Repair Department of Neuroscience University of Turin Italy Laboratory for Memory and Learning Brain Science Institute Wako Saitama Japan Laboratory for Memory and Learning BSI (RIKEN) Japan Laboratory of Neurophysiology Université Libre de Bruxelles Campus Erasme Brussels Laboratory of Neurophysiology Université Mons-Hainaut Mons Belgium Laboratory of Electrophysiology Université Mons-Hainaut Mons Belgium Laboratory of Neurophysiology Université Libre de Bruxelles Brussels IRIBHM CP601 Université Libre de Bruxelles Campus Erasme Brussels Health Science Center The Research Imaging Center at The University of Texas San Antonio Cajal Neuroscience Research Center at the University of Texas San Antonio Biology UTSA San Antonio Research Imaging Center UTHSCSA San Antonio USA Massachusetts General Hospital Harvard Medical School NMR Center Charlestown USA CNRS-Collège de France LPPA Paris France Department of Neuroscience Erasmus University Rotterdam Rotterdam The Netherlands Department of Neuroscience Medical Faculty Erasmus MC Rotterdam The Netherlands CNRS-UMR 7102 Labo DVSN Paris Hôpital de la Salpêtrière INSERM U106 Paris France CNRS URA 1644 I. Pasteur Paris France Campus de San Juan Instituto de Neurociencias UMH-CSIC Alicante Group ‘Développement et Vieillissement du Système Nerveux’ UMR CNRS UniversitéP et M Curie Paris France University P& M Curie UMR CNRS St Bernard Paris France Dipartimento di Scienze Precliniche LITA-Vialba Universitd degli Studi Milano Italy Istituto di Fisiologia Umana II Universitd degli Studi Milano Italy Department of Physiology University of Bristol UK Centre for Biophysical and Clinical Research into Human Movement (CRM) Manchester Metropolitan University UK Department of Pediatrics and Department of Biochemistry and M

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Enhanced Path Prediction for Network Resource Management in Wireless LANs

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IEEE Wireless Communications 2003年第6期10卷 62-69页

作者： Kyriakakos, Miltiadis Frangiadakis, Nikolaos Merakos, Lazaros Hadjiefthymiades, Stathes University of Athens Department of Informatics Communication Networks Laboratory Greek Consulting Firm Advanced Services Group Ltd. Communication Networks Laboratory University of Athens University of Aegean Dept. of Information Engineering Fac. of the Hellenic Open University Patras Greece Department of Telecommunication University of Maryland College Park Communication Networks Laboratory Department of Informatics University of Athens Fac. of Elec. Eng./Computer Science University of Connecticut Storrs Faculty of Electrical Computer Engineering Department Northeastern University Boston MA Commun./Digit. Proc. Research Center Northeastern University IBM T. J. Watson Research Center Yorktown Heights NY Faculty of the University of Athens Greece Department of of Informatics Communication Network Laboratory Netwk. Oper. and Management Center

Path prediction is currently being considered for use in the context of mobile and wireless computing toward more efficient network resource management schemes. Path prediction allows the network and services to further enhance the quality of service levels the user enjoys. Such mechanisms are mostly meaningful in infrastructures like wireless LANs. In this article we present a path prediction algorithm that exploits the machine learning algorithm of learning automata. The decision of the learning automaton is driven by the movement patterns of a single user but is also affected by the aggregated patterns demonstrated by all users. Simulations of the algorithm, performed using the Realistic Mobility Pattern Generator, show increased prediction accuracy.

关键词： Wireless telecommunication systems

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Dynamic analysis of facial color by using the force feedback system for virtual arm wrestling

Dynamic analysis of facial color by using the force feedback...

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IEEE/ASME International Conference on Advanced Intelligent Mechatronics

作者： Yamada, T Watanabe, T Electronic Mechanical Engineering Department Yuge National College of Maritime Technology 1000 Shimoyuge Yuge-Cho Ochigun 794-2593 Ehime Japan Faculty of Computer Science and System Engineering Okayama Prefectural University CREST Japan Science and Technology 111 Kuboki Soja 719-1197 Okayama Japan

ISBN: (纸本)0780377591

In this paper, we develop a 4-DOF force display system for the analysis by synthesis of facial color for the interaction with anthropomorphic agent. By using the system, we analyze the changes in facial skin temperature and facial color associated with circulation dynamics in response to forced actions. On the basis of the analysis, we propose a synthetic method for the affect display of virtual face with facial color and expression in force display, and the effectiveness of the method is confirmed. Finally, we develop a prototype of virtual arm wrestling system with anthropomorphic agent using synthesized dynamic three-dimensional facial color and expression.

关键词： force display facial skin temperature facial color color image processing virtual face

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A Dickson-type power converter with bootstrapped gate transfer switches

A Dickson-type power converter with bootstrapped gate transf...

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International Conference on Telecommunications Energy (INTELEC)

作者： K. Eguchi Hongbing Zhu T. Tabata F. Ueno Department of Information and Computer Sciences Kumamoto National College of Technology Kumamoto Japan Department of Computer Science Hiroshima Kokusai Gakuin University Hiroshima Japan Department of Electrical System and Computer Engineering Sojo University Kumamoto Japan

In this paper, a Dickson-type power converter with bootstrapped gate transfer switches is proposed. The circuit is designed by adding a polarity exchange circuit and N (N = 2, 3, ...) power-switches to the conventional Dickson-type circuit. These additional circuits enable the converter to provide not only a dc-dc output but a dc-ac output. In the process of dc-ac conversion, the circuit can generate various ac outputs by exploiting pulse amplitude modulation (PAM) method. Furthermore, high efficiency can be achieved by adopting novel bootstrap circuits to power-switches in the converter. Via maximum circuits constructed with diodes, the voltage of forward stage is charged to a capacitor in the bootstrap circuit. By connecting the charged-capacitor between the gate terminals of power-switches and the output terminal of the maximum circuit, the bootstrap circuits reduce the on-resistance of the power-switches. The SPICE simulations for the proposed circuit show the following results: 1. the efficiency of dc-dc conversion is more than 90% when the output load Ro = 500 /spl Omega/ and 2. various types of ac outputs can be generated.

关键词： Switching converters Switches AC generators DC-DC power converters Pulse generation Pulse circuits Pulse modulation Amplitude modulation Diodes Voltage

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A novel dynamic fault restoration mechanism using multiple rings approach in WDM mesh network

A novel dynamic fault restoration mechanism using multiple r...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： I-Shyan Hwang I-Feng Huang Chia-Chin Chien Department of Computer Engineering and Science Yuan-Ze University Chungli Taiwan Department of Management Information System Junior College of Nursing Taiwan

ISBN: (纸本)0780377664

This work proposes a distributed algorithm for fault restoration, called the dynamic multiple rings algorithm (DMRA), in a DWDM mesh network. This study explores how to choose restoration paths and distribute a fault-tolerant bandwidth when link, node and channel faults occur. Mesh network topology is becoming increasingly popular, and includes many restoration paths. Calculating the appropriate restoration paths will take a long time if the whole network is considered. Accordingly, the basic idea of this paper is trying to use networking segments near faults to share the restoration load in mesh networks. Each node is responsible for searching restoration paths around it using the proposed DMRA. Nodes use the distributed algorithm to search nearby nodes and establish the relationship between them to build many logical rings. Nodes also can locate the fault in which logical rings are, and these logical rings will establish restoration paths. The traffic load over faulty links or nodes can be diverted to other paths in the networking segments. The cost of restoration paths is computed at each node from both current capacity and transmission time. The selected restoration paths are the appropriate transmission routes in the nearby networks. Accordingly, searching restoration paths and assigning wavelength routings can be performed quickly, depending on network bandwidth and the traffic load. Furthermore, the proposed algorithm is adapted to dynamic networks, and the control messages are to be transmitted in bi-directional control channels. The proposed fault-tolerant mechanism is designed not only for a single fault, but also for multiple faults in the network. Improving the stability and load balance of the network is therefore helpful. Therefore, the method proposed herein can be adopted in a large-scale and complex network topology. The simulation environment employed in this paper is based on the architecture of NFSNet, which includes 14 nodes and 21 links. There

关键词： Wavelength division multiplexing WDM networks Mesh networks Telecommunication traffic Network topology computer architecture Distributed algorithms Fault tolerance Bandwidth Computational modeling

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