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Proceedings of the 2003 ACM Great Lakes Symposium on VLSI

作者： Chabini, Noureddine Chabini, Ismaïl Aboulhamid, El Mostapha Savaria, Yvon Computer Engineering Dep. of Electrical Engineering Princeton University Princeton NJ 08544 United States DIRO Universiteá de Montreáal Succursale Centre-ville Montreáal Que. H3C 3J7 Canada Massachusetts Inst. of Technology Cambridge MA 02139-4307 United States Dep. of Elec. Eng. Ecl. Polytech. de Montreal Suc. Centre-ville Montreáal Que. H3C 3A7 Canada

ISBN: (纸本)9781581136777

We address the problem of minimizing dynamic power consumption for single-phase synchronous digital designs, under timing constraints, using an unification of basic retiming and supply voltage scaling. We assume that the number of supply voltages and their values are known for each computation element. Our main objective is then to change the location of registers using basic retiming while maximizing the number of computation elements off critical paths that can operate under a low available supply voltage, and can lead to a maximum dynamic power saving. We address the problem at the system-level. We formulate the problem as a Mixed Integer Linear Program (MILP). The exact optimal solution for the problem is then guaranteed. We also devise an algorithm to compute bounds on the values assigned by basic retiming to each computational element. Besides helping to find the optimal solution to the problem, these bounds also allow to reduce the run-time for finding this solution. The proposed approach can produce converter-free designs and can also minimize short-circuit power consumption. Experimental results have shown that dynamic power consumption can be reduced by factors that range from 2.78% to 37.24% for single-phase designs with minimal clock period. For these experimental results, the run-time for solving the MILP is under 2min.

关键词： Electric power utilization

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Extensibility of the matter element system and its applications

Advances in Modelling and Analysis A

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Advances in Modelling and Analysis A 2003年第1-2期40卷 23-38页

作者： Gouwei, Yang Xianpu, Zhou Xuyan, Tu Dept. of Mathematics Teachers' College Qindao University Qingdao 266071 China School of Automatic Engineering Boatou Univ. of Iron/Steel Technol. 014010 China Dep. of Computer Science University of Science and Technology Beijing 100083 China

Much more extensibility of matter element systems i.e. the accumulation , combination and separability of system things, characteristics, values, relationships, structures, component elements and systems is given and some reasoning based on the extensibility is offered. The extensibility and reasoning are abundant basis for us to solve system problems, especially to solve contradictory problem. Especially the reasoning based on the extensibility is an useful model of innovation design for products and artificial living agents.

关键词： Systems analysis

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Network Management Temporal Database System Based on XTACACS Protocol

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计算机工程 2002年第S1期28卷 82-85页

作者： MIN Huaqing (dep. of computer Science and engineering, South China University of technology,Guangzhou 510641,China,hqmin@*** ) Dep. of Computer Science and Engineering South China University of Technology Guangzhou 510641China hqmin @***. cn

This paper first analyzes the basic concepts of Cisco router user certification, XTACACS certification protocol and describes the data architecture of user data protocol, then defines a kind of doubly temporal databases and log-in transaction processing based on network management property, at last, introduces implementation technology and method.

关键词： XTACACS protocolNetwork system architectureTemporal databaseTransaction processing

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An extremely narrowband directional coupler wavelength filter based on electromagnetically induced transparency

An extremely narrowband directional coupler wavelength filte...

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Integrated Photonics Research, IPR 2002

作者： Davanço, Marcelo Blumenthal, Daniel J. Thylén, Lars Optical Communications and Photonic Networks Group Electrical and Computer Engineering University of California Santa Barbara United States Laboratory of Photonics and Microwave Electronics Dep. of Electronics Royal Institute of Technology Electrum 229 Kista StockholmS-164 40 Sweden

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A mechanism for multicast multimedia data with adaptive QoS characteristics 6

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6th International Conference on Protocols for Multimedia Systems, PROMS 2001

作者： Bouras, Christos Gkamas, A. Computer Engineering and Informatics Dep. Univ. Of Patras PatrasGR26500 Greece Computer Technology Institute Riga Feraiou 61 PatrasGR 26221 Greece

ISBN: (纸本)9783540427087

In this paper, we describe a mechanism for adaptive transmission of multimedia data, which is based on real time protocols. The proposed mechanism can be used for multicast multimedia data over heterogeneous networks, like the Internet, and has the capability to adapt the transmission of the multimedia data to network changes. In addition, the adaptive multicast transmission mechanism uses an inter-receiver fairness function in order to treat the group of receivers with fairness in a heterogeneous environment. The proposed mechanism uses a "friendly" to the network users congestion control policy to control the transmission of the data. We evaluate the adaptive multicast transmission mechanism through a number of simulations in order to examine its fairness to the group of receivers and its behavior against TCP and UDP data streams. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Heterogeneous networks

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An MRF model-based method for unsupervised textured image segmentation

An MRF model-based method for unsupervised textured image se...

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13th International Conference on Pattern Recognition, ICPR 1996

作者： Noda, Hideki Shirazi, Mehdi N. Kawaguchi, Eiji Kyushu Institute of Technology Dep. of Electrical Electronic and Computer Engineering 1-1 Sensui-cho Tobata-ku Kitakyushu 804 Japan Kyoto University Dep. of Electrical Engineering Yoshida-Honmarzhi Kyoto 606 Japan

ISBN: (纸本)081867282X

This paper proposes a Markov random field (MRF) model-based method for unsupervised segmentation of images consisting of multiple textures. This method uses a hierarchical MRF with two layers, the first layer representing an unobservable region image and the second layer representing multiple textures which cover each region. This method is an iterative method based on the framework of the expectation and maximization (EM) method. We make use of an approximation for the Baum function in the expectation step. This reduces the parameter estimation to the maximum likelihood (ML) estimation given the current estimate of the region image. An estimation of the region image (image segmentation) is carried out by a deterministic relaxation method proposed by us. © 1996 IEEE.

关键词： Image segmentation

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New project to support scientific collaboration electronically

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Eos, Transactions American Geophysical Union 1994年第26期75卷 289-298页

作者： Clauer, C.R. Rasmussen, C.E. Niciejewski, R.J. Killeen, T.L. Kelly, J.D. Zambre, Y. Rosenberg, T.J. Stauning, P. Friis‐Christensen, E. Mende, S.B. Weymouth, T.E. Prakash, A. McDaniel, S.E. Olson, G.M. Finholt, T.A. Atkins, D.E. University of Michigan Space Physics Research Laboratory Ann Arbor Michigan 48109 United States SRI International Geoscience and Engineering Center Menlo Park California 94025 333 Ravenswood Ave United States University of Maryland Institute for Physical Science and Technology College Park Maryland 20742 United States Danish Meteorological Institute Solar Terrestrial Physics Division Copenhagen Denmark Lockheed Palo Alto Research Laboratory Palo Alto California 94304 3251 Hanover St United States University of Michigan Dep. of Electrical Engineering and Computer Science Ann Arbor Michigan 48109 United States University of Michigan Cognitive Science and Machine Intelligence Laboratory Ann Arbor Michigan 48109 701 Tappan United States University of Michigan School of Information and Library Studies Ann Arbor Michigan 48109 304 W. Engineering United States

A new multidisciplinary effort is linking research in the upper atmospheric and space, computer, and behavioral sciences to develop a prototype electronic environment for conducting team science worldwide. A real‐world electronic collaboration testbed has been established to support scientific work centered around the experimental operations being conducted with instruments from the Sondrestrom Upper Atmospheric Research Facility in Kangerlussuaq, Greenland. Such group computing environments will become an important component of the National Information Infrastructure initiative, which is envisioned as the high‐performance communications infrastructure to support national scientific research. ©1994. American Geophysical Union. All Rights Reserved.

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Stabilizers enhancing the frequency regulation action of HVDC links supplying weak AC systems

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European Transactions on Electrical Power 1993年第3期3卷 201-212页

作者： Maris, T.I. Lygdis, A.D. Vovos, N.A. Giannakopoulos, G.B. Theodoros I. Maris (1961) received the Diploma in Electrical Engineering from the University of Patras/Greece in 1984. In 1985 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras as research assistant where he is currently working for his Ph.D. degree. His area of interest is HVDC transmission. (University of Patras Dep. of Electrical Engineering Power Systems Laboratory GR-26 500 Rion. Patras/Greece T +3061/997350 Fax +3061/997362) Athanassios D. Lygdis (1954) received the Diploma in Electrical Engineering from the University of Patras/Greece in 1979. From 1979 until 1982 he worked at the Nuclear Technology Laboratory of the University of Patras as research assistant. In 1983 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras as scientific collaborator. He is now working for his Ph.D. degree in this Department. His main field of interest is power transmission by HVDC systems. (University of Patras Dep. of Electrical Engineering Power Systems Labora- tory GR-26 500 Rion Patras/Greece T + 3061/997350 Fax + 3061/997361) Nickolas A. Vovos (1951) received the Diploma degree from the University of Patras/Greece the M.Sc. degree from the University of Manchester/England Institute of Science and Technology. and the Ph.D. degree from the University of Patras in 1974 1975 1978 respectively all in Electrical Engineering. In 1976 he joined the Power Systems Laboratory at the Electrical Engineering Department of the University of Patras where he is now Associate Professor. His main fields of interest are the modeiling and the transient stability study of integrated AC/DC systems. He is a member of the IEEE Power Engineering Society and CIGRE and a registered professional Engineer and member of the Technical Chamber of Greece (University of Patras Dep. of Electrical Engineering Power Systems laboratory GR-26500 Rion Patras/Greece. T +3061/997369 Fax +3061/997362) Gabriel B. Giannakopoulos (1

Power System Stabilizers (PSS) superimposed to the basic control system of an HVDC link supplying a weak AC system, in order to enhance its frequency regulation action, are proposed. To decrease the AC voltage sensitivity at the inverter side, the basic control system of the HVDC link is proposed to operate with the rectifier under Minimum Ignition Angle (MIA) control and the inverter under Constant Current (CC) control. Inputs to the PSS are the frequency and the AC voltage deviations at the inverter side and their constant parameters are calculated using modal control technique. Detailed simulation results for a practical integrated AC/DC system are presented to evaluate the performance of the proposed control scheme. Copyright © 1993 John Wiley & Sons, Ltd.

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Optical tracking System for automatic guided vehicles using cellular neural networks 2

Optical tracking System for automatic guided vehicles using ...

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2nd International Workshop on Cellular Neural Networks and their Applications, CNNA 1992

作者： Eröss, Gy. Boros, T. Kiss, Á. Radványi, A. Roska, T. Bitó, J. Vass, J. Tungsram TH Co. Ltd Centre of Robotics and Automation Václ ut 77 BudapestH-1340 Hungary Dual and Neural Computing Systems Laboratory Computer and Automation Institute of the Hungarian Academy of Sciences P.O.B.63 BudapestH-1502 Hungary Dep. of Information Technology Faculty of Engineering University Veszprém Egyetem u. 10 VeszprémH-8201 Hungary

ISBN: (纸本)0780308751

computer Integrated Manufacturing (CIM) Systems having determining role in the modern industry. These systems contain essentially two different equipments for transporting materials between workstations: - conveyors can be used if the path of transportation is fixed and known in advance, or - if the path of the transportation may change or there are various tasks to be solved along the path, the use of Automatic Guided Vehicles (AGV) is strongly recommended. The path control of an AGV in CIM systems is generally solved either by following an inductive wire or by determining its position and orientation from signals provided by transmitters mounted at some characteristic points of the workshop. Both of these basic methods have their advantages and drawbacks. © 1992 IEEE.

关键词： Automatic guided vehicles

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Modeling Of Electroretinogram And Its Relation To Stimulus Light Intensity

Modeling Of Electroretinogram And Its Relation To Stimulus L...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： J.J. Castro A.U. Meyer E.J. Haupt Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA The Eye Institute of New Jersey and Dep. of Ophthalmology UMDNJ-NJMS Newark NJ USA

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