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Euromicro Workshop on Parallel and distributed Processing

作者： L. Boianov I. Jelly Laboratory for Distributed Systems and Computer Networks CICI Bulgarian Academy of Sciences Sofia Bulgaria Computing Research Centre School of Computing and Management Sciences Sheffield Hallam University Sheffield UK

The implementation of a distributed digital logic simulation algorithm on a network of workstations is presented. The simulation of digital circuits is done using a demand driven approach. The simulation is performed on a network of workstations using the Parallel Virtual Machine (PVM) software. The use of the PVM as a platform for parallel and distributed applications is assessed in the light of the test results. The feasibility of running parallel logical simulation algorithms on such platform is considered.< >

关键词： Logic circuits Circuit simulation Workstations Computational modeling Computer network management Digital circuits Application software Parallel algorithms Parallel processing Partitioning algorithms

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Fuzzy logic and knowledge representation in a symbolic-subsymbolic architecture

Fuzzy logic and knowledge representation in a symbolic-subsy...

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International Conference on Neural Networks

作者： S.K. Tang T.S. Dillon R. Khosla Expert & Intelligent Systems Laboratory Applied Computing Research Instituteand Department of Computer Science and Computer Engineering La Trobe University Bundoora VIC Australia

In this paper, we show the relevance of fuzzy systems in an integrated symbolic and subsymbolic architecture for information processing. We also show how fuzzy logic can be used to represent knowledge in the integrated architecture. We end up with an integrated architecture of knowledge based, connectionist and fuzzy systems for information processing and knowledge modelling. The integrated information processing architecture assists the problem solver in determining the relevance of the three computational paradigms, and their strategy for integrating them in problem solving.

关键词： Fuzzy logic Knowledge representation Information processing Computer architecture Fuzzy systems Problem-solving

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Knowledge modeling in integrated symbolic-connectionist systems

Knowledge modeling in integrated symbolic-connectionist syst...

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IEEE International Conference on systems, Man and Cybernetics

作者： R. Khosla T. Dillon Expert and Intelligent Systems Laboratory Applied Computing Research Institute Department of Computer Science and Computer Engineering La Trobe University Melbourne VIC Australia

Knowledge based systems, fuzzy systems, and artificial neural networks (ANN) are the three most widely used computational paradigms for emulating different aspects of human cognition like information processing, knowledge representation, and learning. A proper integration of these three paradigms can help to realize powerful problem solving strategies especially for large data intensive domains. In this direction we have developed a generic architecture for integration of symbolic (knowledge based and fuzzy) and connectionist (ANN) systems for large, data intensive domains at the task structure level, computational (symbol) level, and the program level. In this paper we outline the knowledge modeling aspects of the integrated symbolic (knowledge based and fuzzy)-connectionist architecture. The knowledge content of the architecture can facilitate a problem solver in modeling the knowledge required for using as well as integrating the three intelligent paradigms.

关键词： Artificial neural networks Computer architecture Fuzzy systems Power system modeling Knowledge based systems Computer networks Humans Cognition Information processing Knowledge representation

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Convergence of genetic evolution algorithms for optimization

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Parallel Algorithms and Applications 1995年第1-2期5卷 37-56页

作者： He, Jun Kang, Li-Shan Chen, Yong-Jun National Research Center for Intelligent Computing Systems Software Engineering State Key Laboratory Beijing 100080 P.O. Box 2704 China Software Engineering State Key Laboratory China School of Management Wuhan University Wuhan 430072 China

Genetic algorithms are highly parallel, adaptive search method based on the processes of Darwinian evolution. This paper combines genetic algorithms with simulated annealing algorithms to a new kind of random search algorithms which is called genetic evolution algorithms. We give some conditions which guarantee random search algorithms to converge to the global optima set with probability 1 for solving optimization problems and analyze the convergence of genetic evolution algorithms by using Markov chain theory. © 1995, Taylor & Francis Group, LLC. All rights reserved.

关键词： Genetic algorithms Markov chain Optimization problems Simulated annealing algorithms

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A standard cell global routing algorithm with net selection for over-the-cell routing

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ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE 1995年第12期78卷 102-115页

作者： Koide, T Suzuki, T Wakabayashi, S Yoshida, N Member Faculty of Engineering Hiroshima University Higashi-Hiroshima Japan 724 Associate Member Shin'ichi:Wakabayashi received his B.E. degree in Electrical Engineering and his M.E. and Ph.D. degrees in Systems Engineering from Hiroshima University in 1979 1981 and 1984 respectively. He was a Researcher at Tokyo Research Laboratory IBM Japan Ltd. in 1984-1988. Since 1988 he has been an Associate Professor on the Faculty of Engineering Hiroshima University. His research interests include VLSI CAD combinatorial optimization parallel and distributed algorithms and theory of computing. Dr. Wakabayashi is a member of the Institute of Electrical and Electronics Engineers the Association for Computing Machinery the Institute of Electronics Information and Communication Engineers and the Information Processing Society of Japan. Members

In the detailed routing for VLSI standard cell layout design, the over-the-cell channel routing, which utilizes the over-the-cell legion as the routing region, has been proposed. In this design method, after determining the net assignment to each channel in the global routing step, the track assignment both in channel and on over-the-cell regions is performed by an over-the-cell channel router. However, conventional global routing algorithms do not assume over-the-cell channel routing but conventional channel routing, Therefore, the minimization of channel density does not always successfully lead to the minimization of the final channel height. This paper presents a new global Touting method for standard cell layouts to determine global routes for each net in both channel and over-the-cell regions simultaneously. The standard cell layout design system GLORIA based on the proposed algorithm is developed, and the experimental results compared with the conventional global routing method that performs the over-the-cell channel routing after global-routing with TimberWolf-SC4.2c are reported. Experimental results showed that the proposed routing algorithm can route about 18.4 percent fewer number of tracks than the conventional routing method, and the effectiveness of the proposed method is shown. The experimental results of applying the proposed method to the three-layer routing layout model also are presented.

关键词： standard cell layout design CAD global routing over-the-cell routing

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PARALLEL AND distributed TLM COMPUTATION WITH SIGNAL-PROCESSING FOR ELECTROMAGNETIC-FIELD MODELING

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INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS 1995年第3-4期8卷 169-185页

作者： SO, PPM ESWARAPPA, C HOEFER, WJR NSERC/MPR Teltech Research Chair in RF Engineering Department of Electrical and Computer Engineering University of Victoria Victoria British Columbia V8W 3P6 Canada Poman So received his B.Sc. degree in computer science and physics from the University of Toronto Toronto Onatario Canada in 1985. He obtained his B.A. Sc. and M.A.Sc. degrees in electrical engineering (summa cum laude) from the University of Ottawa Ottawa Ontario Canada in 1987 and 1989 respectively. Mr So was a research engineer in the University of Ottawa from January 1989 to October 1991 his research interests included CAD techniques of microwave circuits and numerical methods for electromagnetic wave modelling. He specialized in the development of electromagnetic engineering CAD software and successfully implemented a number of electromagnetic wave simulators based on the two-dimensional and three-dimensional transmission-line matrix methods. From August 1990 to February 1991 he accompanied Professor W. J. R. Hoefer to Rome Italy and Sophia Antiopolas France. During that time he implemented a parallel version of the 3D-TLM simulator for the CM-2 Connection Machine using C-Star and X Windows Library. He is a research engineer and a Ph.D. student at the University of Victoria Victoria British Columbia Canada. He ported the 2D- and 3D-TLM simulators to DECmpp 1200 massively parallel computer using MPL C and C++. He also combined OSA90/hope a commercially available microwave CAD program with a 2D-TLM simulation module for geometry optimization using the Datapipe technique of OSA90/hope. Recently he has developed a distributed client-server computing technique for the TLM method this technique could accelerate the TLM simulation by more than an order of magnitude. Channabasappa Eswarappa received the M.Tech. degree in electrical engineering from the Indian Institute of Technology Kanpur India in 1983 and Ph. D. degree from the University of Ottawa Canada in 1990. He worked as an Assistant Executive Engineer and later as

This paper describes the implementation of transmission-line matrix (TLM) method algorithms on a massively parallel computer (DECmpp 12000), the technique of distributed computing in the UNIX environment, and the combination of TLM analysis with Prony's method as well as with autoregressive moving average (ARMA) digital signal processing for electromagnetic field modelling. By combining these advanced computation techniques, typical electromagnetic field modelling of microwave structures by TLM analysis can be accelerated by a few orders of magnitude.

关键词： Mathematical models

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SOLUTION OF POWER-SYSTEM PROBLEMS THROUGH THE USE OF THE OBJECT-ORIENTED PARADIGM

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INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY systems 1994年第3期16卷 157-165页

作者： DILLON, TS CHANG, E Expert and Intelligent Systems Laboratory Applied Computing Research Institute Australia Department of Computer Science and Computer Engineering La Trobe University Bundoora Vic 3083 Australia

The paper presents a description of the state of the art of the application of object-oriented systems to power system problems. It presents a brief resume of the object-oriented concepts. It examines the application in three areas, namely: traditional software applications, database systems and knowledge-based systems. It also looks at all three stages of the use of object-oriented models in these three areas. The three stages are the conceptual model, the software structure model and the implementation model. It provides a set of conclusions as to future areas of applications of the object-oriented paradigm to power systems applications.

关键词： SOFTWARE ENGINEERING DATABASES KNOWLEDGE-BASED systems AND OBJECT-ORIENTED systems

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A distributed real-time intelligent alarm processing system with symbolic-connectionist computation 2

A distributed real-time intelligent alarm processing system ...

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2nd IEEE Workshop Real-Time Applications, RTA 1994

作者： Khosla, R. Dillon, T. Expert and Intelligent Systems Laboratory Applied Computing Research Institute Department of Computer Science and Computer Engineering La Trobe University MelbourneVIC3083 Australia

ISBN: (纸本)0818663758

In this paper we outline the features of a cognitively compatible symbolic-connectionist architecture for complex data intensive time-critical domains especially in the diagnostic area. We examine how a symbolic-connectionist architecture copes with the time-critical and size complexity aspects of a real time alarm processing system developed for a regional power system control centre. © 1994 IEEE.

关键词： distributed computer systems

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NSAIL PLAN: an experience with constraint-based reasoning in planning and animation

NSAIL PLAN: an experience with constraint-based reasoning in...

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Computer Animation

作者： Sang Mah T.W. Calvert W. Havens Computer Graphics Research Laboratory / Intelligent Systems Laboratory School of Computing Science Simon Fraser University Burnaby BC Canada

A constraint-based reasoning system is used for knowledge representation and reasoning in behavioural animation, specifically in the animation of sailing behaviour. The object-oriented ECHIDNA reasoning and constraint logic programming shell handles the constraints for formulation and execution of plans for intelligent entities. At higher levels of control, the observed motion of an object is a reflection of the reasoning process of an intelligent entity as it reacts to its environment. The environment, internal knowledge and physical structure serve as constraints in developing a plan, which in turn provides additional constraints in the animation of reactive behaviour. An animation approach using constraint-based reasoning is presented focusing on details of the planning process adapted in the approach. The implementation of the NSAIL program reveals further insight into applying this approach towards the development of a high-level intuitive interface for behavioural animation.< >

关键词： Animation Logic programming Motion control Humans Problem-solving Space exploration Knowledge based systems Expert systems Object oriented modeling Power system modeling

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Teaching object oriented software engineering within a multiple paradigm context

Teaching object oriented software engineering within a multi...

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Software Education Conference

作者： E. Chang Department of Computer Science and Computer Engineering La Trobe University and Intelligent Systems Laboratory Applied Computing Research Institute

The paper describe the teaching of object-oriented ideas within all four years of a Bachelor of Computer System Engineering and the BSc in Computer Science Degree at La Trobe University. This is taught together with a variety of other traditional approaches. A key element in the teaching of OO is the Software Engineering Project, which is explained in some detail. The teaching is also complicated by a number of different target student populations. This also provides us with an opportunity to study the effect of different factors on the learning of OO by the students. The experience indicates that OO is a significant software engineering paradigm, well accepted by the students.< >

关键词： Education Software engineering systems engineering and theory Computer science Design engineering intelligent systems Computer industry Feedback Computer networks Computer network management

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