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"Gridifying" aerodynamic design problem using gridRPC 2nd

2nd International Workshop on Grid and Cooperative computing, GCC 2003

作者： Ho, Quoc-Thuan Ong, Yew-Soon Cai, Wentong Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University 639798 Singapore

ISBN: (纸本)3540219889

This paper presents a "gridifying" process for aerodynamic wing design as a case study of complex engineering design problems. In order to assist engineers and scientists to solve the problems on the Grid environment effectively, we developed an API based on GridRPC, a Remote Procedure Call standard interface for Grid-enabled applications. In this work, we also provide mechanisms to reduce communication cost and schedule GridRPC requests across multiple clusters on the Grid. These facilities are incorporated in our GridRPC API implementation. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Grid computing

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Multi-agent interactions in distributed virtual worlds

Multi-agent interactions in distributed virtual worlds

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IEEE TENCON 2004 - 2004 IEEE Region 10 Conference: Analog and Digital Techniques in Electrical Engineering

作者： Wang, Fang Turner, Stephen John Wang, Lihua Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University 639798 Singapore Singapore

Multi-agent systems provide a valuable tool for handling increasing software complexity and supporting rapid and accurate problem solving. This paper presents a general architecture in which autonomous agents are embedded in a distributed virtual environment and are enabled to communicate with each other. We focus on the interaction issues, using cooperation and coordination patterns. Different cases of the agents' teamwork to improve their efficiency are investigated and compared. A prototype system has been implemented, with message templates and algorithms identified. Finally, some experimental results are given. © 2004 IEEE.

关键词： Multi agent systems

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Adaptive data consistency management in collaborative editing environment

Adaptive data consistency management in collaborative editin...

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Proceedings - 2004 International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA 2004

作者： Omar, Mohd Adib Haron, Fazilah Abdullah, Rosni Parallel/Distr. Computing Centre School of Computer Science Universiti Sains Malaysia 11800 Penang Malaysia

ISBN: (纸本)0780384822

The techniques to achieve data consistency using operational transformation approach to support real-time and non-real-time collaborative editing are discussed. A proposed collaborative editing prototype system called Adaptive Collaborative Editing (ACE) helps in demonstrating the adaptive data consistency management, adaptive logical time-stamping and adaptive notification. The collaborative environment enables computer-based collaboration in wide-area network. The main objective of a collaborative environment is to allow coherent and consistent object sharing and manipulation by distributed users.

关键词： computer supported cooperative work

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Grid computing in China

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Journal of Grid computing 2004年第2期2卷 193-206页

作者： Yang, Guangwen Jin, Hai Li, Minglu Xiao, Nong Li, Wei Wu, Zhaohui Wu, Yongwei Tang, Feilong Department of Computer Science and Technology Tsinghua University Beijing China School of Computer Huazhong University of Science and Technology Wuhan China Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai China Key Laboratory for Parallel and Distributed Processing National University of Defense Technology Changsha China Institute of Computing Technology Chinese Academy of Sciences Beijing 100080 China College of Computer Science Zhejiang University Hangzhou 310027 China

Grid computing presents a new trend to distributed computation and Internet applications, which can construct a virtual single image of heterogeneous resources, provide uniform application interface and integrate widespread computational resources into super, ubiquitous and transparent aggregation. In the adoption of Grid computing, China, who is facing more resource heterogeneity and other specific demands, has put much effort on both research and practical utilization. In this paper, we introduce the major China Grid research projects and their perspective applications. First we give the overview of the four government-sponsored programs in Grid, namely the China National Grid, ChinaGrid, NSFC Grid, and ShanghaiGrid. Then we present six representative ongoing Grid systems in details, which are categorized into Grid middleware and Grid application. This paper provides the general picture of Grid computing in China, and shows the great efforts, devotion and confidence in China to use Grid technology to boost the society, economics and scientific research. © Springer 2004.

关键词： Grid computing

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Multiagent interactions in distributed virtual worlds

Multiagent interactions in distributed virtual worlds

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IEEE Region 10 International Conference TENCON

作者： F. Wang S.J. Turner L. Wang Parallel & Distributed Computing Centre School of Computer Engineering Nanyang Technological University Singapore

Multiagent systems provide a valuable tool for handling increasing software complexity and supporting rapid and accurate problem solving. This paper presents a general architecture in which autonomous agents are embedded in a distributed virtual environment and are enabled to communicate with each other. We focus on the interaction issues, using cooperation and coordination patterns. Different cases of the agents' teamwork to improve their efficiency are investigated and compared. A prototype system has been implemented, with message templates and algorithms identified. Finally, some experimental results are given.

关键词： Problem-solving Computational modeling distributed computing Multiagent systems Software tools Autonomous agents Virtual environment Prototypes Application software Concurrent computing

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Grid Services and Service Discovery for HLA-Based distributed Simulation 04

Grid Services and Service Discovery for HLA-Based Distribute...

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International Workshop/Symposium on distributed Simulation and Real-Time Applications (DS-RT)

作者： Wenbo Zong Yong Wang Wentong Cai S.J. Turner Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University Singapore

ISBN: (纸本)9780769522326

Modelling and simulation permeate all areas of business, science and engineering and increasingly complex simulation systems often require huge computing resources and data sets that are geographically distributed. The widely adopted platform for building distributed simulations is the High Level Architecture (HLA). Deficiencies associated with HLA have been well discussed in the literature. The advent of Grid technology enables the use of distributed computing resources and facilitates the access of geographically distributed data. In this paper, we propose a framework for executing large-scale distributed simulations using Grid services. The framework addresses some of the deficiencies of HLA, including dynamic discovery and resource utilization. End-users can construct large-scale distributed simulations using this framework with ease.

关键词： Computational modeling distributed computing Large-scale systems Web services Resource management Concurrent computing Data engineering computer simulation computer architecture Buildings

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Adaptive data consistency management in collaborative editing environment

Adaptive data consistency management in collaborative editin...

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International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA

作者： M.A. Omar F. Haron R. Abdullah Parallel and Distributed Computing Center School of Computer Science Universiti Sains Malaysia Penang Malaysia

Collaborative editing is a subset of groupware system. Groupware or computer supported cooperative work (CSCW) application is "a computer-based system that supports groups of people engaged in a common task (or goal) and that provide an interface to a shared environment". This research area is also known as collaborative computing. Collaborative environment enables computer-based collaboration in wide-area network, static and dynamic resource sharing and instant or delayed feedback from collaborators. The objective of a collaborative environment is to allow coherent and consistent object sharing and manipulation by distributed users. Some examples of collaborative activities include desktop conferencing, cooperative document editing, cooperative designing and modeling. Consistency management mechanisms are needed to resolve conflicting actions performed by multiple users. Conflicting actions include simultaneous modification of shared data and out-of-order of data arrival and data execution due to communication delay.

关键词： Environmental management Collaboration Collaborative work Collaborative software computer interfaces Application software computer applications computer networks Resource management Feedback

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GEMLCA: grid execution management for legacy code architecture design

GEMLCA: grid execution management for legacy code architectu...

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EUROMICRO Conference

作者： T. Delaitre A. Goyeneche P. Kacsuk T. Kiss G.Z. Terstyanszky S.C. Winter Centre for Parallel Computing Cavendish School of Computer Science University of Westminster London UK

The grid execution management for legacy code architecture (GEMLCA) describes a solution for exposing and executing legacy applications through an OGSI grid service. This architecture has been introduced in a previous paper by the same authors where the general concept was demonstrated by creating an OGSI/GT3 version of the MadCity traffic simulator. The class structure of the architecture is described presenting each component and describing the relationships between them. Also, the current architecture implementation is evaluated through test results gained by running the MadCity traffic simulator as a C/PVM legacy application.

关键词： computer architecture Grid computing Java Wrapping Testing Traffic control Computational modeling Application software Service oriented architecture parallel processing

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Panel on future challenges in modeling methodology 04

Panel on future challenges in modeling methodology

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Simulation Winter Conference

作者： S.J.E. Taylor P. Lendermann R.J. Paul S.W. Reichenthal S. Strassburger S.J. Turner Centre for Applied Simulation Modeling Department of Information Systems and Computing Brunei University Uxbridge Middlesex UK Production and Logistics Planning Group Singapore Institute of Manufacturing Technology Singapore Boeing Anaheim CA USA Department Virtual Development Fraunhofer Institute of Factory Operation and Automation Magdeburg Germany Parallel & Distributed Computin Centre School of Computer Engineering Nanyang Technological University Singapore

ISBN: (纸本)9780780387867

This panel paper presents the views of six researchers and practitioners of simulation modeling. Collectively we attempt to address a range of key future challenges to modeling methodology. It is hoped that the views of this paper, and the presentations made by the panelists at the 2004 Winter Simulation Conference will raise awareness and stimulate further discussion on the future of modeling methodology in areas such as modeling problems in business applications, human factors and geographically dispersed networks; rapid model development and maintenance; legacy modeling approaches; markup languages; virtual interactive process design and simulation; standards; and Grid computing.

关键词： Computational modeling Virtual manufacturing Logistics Human factors computer aided manufacturing Markup languages Process design Standards development Grid computing Discrete event simulation

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Non-functional oriented dynamic integration of distributed components

Non-functional oriented dynamic integration of distributed c...

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Foclasa 2002, Foundations of Coordination Languages and Software Architectures (Satellite Workshop of CONCUR 2002)

作者： Saleh, Ahmed Justo, George R.R. Winter, Stephen C. Centre for Parallel Computing Computing University of Westminster London United Kingdom Cap Gemini Ernst and Young London United Kingdom Cavendish School of Computer Science University of Westminster London United Kingdom

Building distributed systems from scratch is known as one of the most difficult and time consuming process in software engineering. A great deal of progress has been made in the development of middleware and techniques to facilitate the process of distributed systems through integrating reusable components and customizing middleware. However, most of these solutions tend to focus on the functional aspects of the components and how to adapt their behavior according to their needs. Although the non-functional properties of the services are equally important, because of the difficulties in representing and controlling them, they are usually neglected. This paper investigates the problem of distributed systems' non-functional properties and describes a framework that presents a solution to the problem. The framework is based on the idea of defining the non-functional properties of the services at the early stages of the design and incorporating such properties within the architecture to ease the process of managing the system at run time. © 2003 Published by Elsevier science B.V.

关键词： distributed computer systems

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