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simulation Winter Conference

作者： L. Chwif M.R.P. Barretto R.J. Paul Department of Industrial Engineering Mauá School of Engineering Sao Caetano do Sul Brazil Mechatronics Laboratory University of São Paulo Sao Paulo Brazil Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunei University Uxbridge Middlesex UK

Over the past years, there has been a growth in simulation courses both at undergraduate and postgraduate levels. A discrete event simulation course, as with any non-basic course, has some prerequisites that must be satisfied by students before attending classes. Statistics, computer programming and modeling are the most important, together with knowledge on the specific field being simulated (manufacturing, logistics, etcetera). Are students sufficiently prepared to follow a course on simulation? This work is related to the construction, application and analysis of an assessment instrument to evaluate student prerequisite knowledge for a discrete event simulation course. The proposed questionnaire was given to the 5/sup th/ year engineering students at the beginning of our first year (72 hours) discrete event simulation introductory course at Maua School of Engineering. The results obtained show the importance of making an assessment evaluation in order to improve the quality of simulation learning.

关键词： Discrete event simulation Computational modeling Statistics Programming Computer simulation Computer aided manufacturing Virtual manufacturing Logistics Application software Instruments

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Netmeeting: A tool for collaborative simulation modelling

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International Journal of simulation: systems, Science and Technology 2000年第1-2期1卷 59-68页

作者： Taylor, Simon J. E. Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunel University Uxbridge Middx United Kingdom

Effective collaboration in simulation modelling is possibly one of the key factors in the success of a simulation project. Computer Supported Cooperative Work is a research field that has investigated this in other domains. This field has led to the technological development of software, or groupware, to facilitate group working. This paper investigates the appropriateness of groupware in simulation modelling by introducing Microsoft’s NetMeeting, an exemplar of this technology. This groupware is discussed in terms of simulation modelling activities. A short survey of expert opinion is also presented to evaluate the usefulness of this technology. The survey shows that application sharing is clearly perceived to be the most useful feature of NetMeeting. © 2000, UK simulation Society. All right reserved.

关键词： Groupware

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A review of Web based simulation: whither we wander?

A review of Web based simulation: whither we wander?

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simulation Winter Conference

作者： J. Kuljis R.J. Paul Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunei University Uxbridge Middlesex UK

This paper considers a variety of new technologies for discrete-event simulation software development. Environments and languages for Web based simulation are reviewed. Web based applications are discussed. After proposing a summary of the review, ways of working that will have an unpredictable effect on the future of simulation modeling are proposed.

关键词： Computational modeling Java Computer simulation Application software Internet Collaboration information systems Discrete event simulation Programming Computer languages

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Distributed supply chain simulation in GRIDS

Distributed supply chain simulation in GRIDS

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simulation Winter Conference

作者： R. Sudra S.J.E. Taylor T. Janahan Centre for Applied Simulation Modelling Department of Information System and Computing Brunei University Uxbridge UK

Amongst the majority of work done in supply chain simulation, papers have emerged that examine the area of model distribution. The executions of simulations on distributed hosts as a coupled model require both coordination and facilitating infrastructure. A distributed environment, the Generic Runtime Infrastructure for Distributed simulation (GRIDS) is suggested to provide the bonding requirements for such a model. The advantages of transparently connecting the distributed components of a supply chain simulation allow the construction of a conceptual simulation while releasing the modeler from the complexities of the underlying network. The infrastructure presented demonstrates scalability without losing flexibility for future extensions based on open industry standards.

关键词： Supply chains Computational modeling Joining processes Runtime Military standards Supply chain management information systems Distributed computing Bonding Scalability

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On simulation model complexity

On simulation model complexity

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simulation Winter Conference

作者： L. Chwif M.R.P. Barretto R.J. Paul Mechatronics Laboratory University of São Paulo Sao Paulo Brazil Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunei University Middlesex UK

Nowadays the size and complexity of models is growing more and more, forcing modelers to face some problems that they were not accustomed to. Before trying to study ways to deal with complex models, a more important and primary question to explore is, is there any means to avoid the generation of complex models? The primary purpose of this paper is to discuss several issues regarding the complexity of simulation models, summarizing the findings in this area so far, and calling attention to this area that, despite its importance, appears to remain at the bottom of simulation research agendas.

关键词： Computational modeling Computer simulation Mechatronics information systems Computer performance Project management Resource management Time factors Software performance Animation

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Using simulation for the economic evaluation of liver transplantation

Using simulation for the economic evaluation of liver transp...

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simulation Winter Conference

作者： L.P. Baldwin T. Eldabi R.J. Paul A.K. Burroughs Centre for Applied Simulation Modelling CASM Department of Information Systems and Computing Brunei University Uxbridge Middlesex UK Department of Medicine Royal Free Hospital and School of Medicine London UK

This paper demonstrates the use of simulation in an evaluative study for the technology of liver transplantation from the cost-effectiveness point of view. This study is conducted in the United Kingdom where there are no explicit guidelines for the prioritization of patients waiting for transplantation. Another objective of the model is to enable health economists to understand the technology of liver transplantation and evaluate alternative policies for prioritizing patients in the waiting list. The paper shows the construction of a tailor-made package (LiverSim) and provides an example of how this package is used by the stakeholders to assist in the evaluation process. Some final lessons are drawn that simulation helps in exploring more issues outside the boundaries of quantitative results.

关键词： Hospitals Computational modeling Packaging Liver diseases information systems Guidelines Europe Decision making Surgery Blood

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simulation modeling as an aid to decision-making in healthcare management: the Adjuvant Breast Cancer (ABC) trial

Simulation modeling as an aid to decision-making in healthca...

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simulation Winter Conference

作者： L.P. Baldwin T.A. Eldabi R.J. Paul Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunei University Uxbridge Middlesex UK

The paper presents simulation modeling as a decision support technique and suggests that it can be a useful for understanding problems related to health care, randomized clinical trials in this case. The paper shows that simulation may not be regarded as a tool for deriving solutions to certain problems. In fact simulation is better suited for understanding the problem and enhancing systematic debate between the problem owners. The paper also demonstrates the usefulness of combining different software to provide a comprehensive tailor-made package (ABCSim). The example used is based on modeling a randomized clinical trial for Adjuvant Breast Cancer.

关键词： Decision making Medical services Breast cancer Medical treatment Computational modeling Clinical trials Economics Packaging Collaboration Management information systems

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Developing interest management techniques in distributed interactive simulation using Java

Developing interest management techniques in distributed int...

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simulation Winter Conference

作者： S.J.E. Taylor J. Saville R. Sudra Centre for Applied Simulation Modelling Department of Information System and Computing Brunei University Uxbridge UK

Bandwidth consumption in distributed real time simulation, or networked real time simulation, is a major problem as the number of participants and the sophistication of joint simulation exercises grow in size. The paper briefly reviews distributed real time simulation and bandwidth reduction techniques and introduces the Generic Runtime Infrastructure for Distributed simulation (GRIDS) as a research architecture for studying such problems. GRIDS uses Java abstract classes to promote distributed services called thin agents, a novel approach to implementing distributed simulation services, such as user defined bandwidth reduction mechanisms, and to distributing the executable code across the simulation. Thin agents offer the advantages of traditional agents without the overhead imposed by mobility or continuous state, which are unnecessary in this context. We present our implementation and some predicted results from message reduction studies using thin agents.

关键词： Java Computational modeling Bandwidth Predictive models Traffic control Displays Intelligent networks Real time systems Runtime Joining processes

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simulation modeling as an aid to decision-making in healthcare management: the adjuvant breast cancer (ABC) trial 99

Simulation modeling as an aid to decision-making in healthca...

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Proceedings of the 31st conference on Winter simulation: simulation---a bridge to the future - Volume 2

作者： Lynne P. Baldwin Tillal A. Eldabi Ray J. Paul Centre for Applied Simulation Modelling Department of Information Systems and Computing Brunel University Uxbridge Middlesex UB8 3PH U.K.

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simulation optimization with the linear move and exchange move optimization algorithm

Simulation optimization with the linear move and exchange mo...

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simulation Winter Conference

作者： M.R.P. Barretto L. Chwif T. Eldabi R.J. Paul Mechatronics Laboratory University of Sao Paulo Sao Paulo Brazil Centre For Applied Simulation Modelling Department of Information Systems And Computing Brunei University Uxbridge Middlesex UK

The linear move and exchange move optimization (LEG) is an algorithm based on a simulated annealing algorithm (SA), a relatively recent algorithm for solving hard combinatorial optimization problems. The LEO algorithm was successfully applied to a facility layout problem, a scheduling problem and a line balancing problem. We try to apply the LEO algorithm to the problem of optimizing a manufacturing simulation model, based on a steelworks plant. This paper also demonstrates the effectiveness and versatility of this algorithm. We compare the search effort of this algorithm with a genetic algorithm (GA) implementation of the same problem.

关键词： Computational modeling Input variables Computer simulation Low earth orbit satellites Optimization methods Constraint optimization Simulated annealing Mechatronics Scheduling algorithm Job shop scheduling

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