SIMULATION: Transactions of The Society for Modeling and Simulation International

doi: 10.1177/003754979406300301pmid: N/A

Wildberger, A. Martin

doi: 10.1177/003754979406300302pmid: N/A

Russell, Carol S.; Graham, James H.; Elmaghraby, Adel S.

doi: 10.1177/003754979406300303pmid: N/A

This paper presents a formal model for the interface between a simulation and a knowledge-based manager, and discusses the application of this model to practical simulation problems. Models of both the simulation and the knowledge components are presented, and issues of variable selection, time representation and communication costs are addressed. The model is then applied to a case study involving simulation of a small flexible manufacturing system. A knowledge-based scheduling system in the C-Language Production System (CLIPS) is interfaced to the FMS simulation written in SIMSCRIPT. In the context of this case study, a set of heuristics for selecting interface variables and for analyzing and reducing communications overhead are presented and discussed.

doi: 10.1177/003754979406300304pmid: N/A

Chervi, Philippe; Sautereau, Christian

doi: 10.1177/003754979406300305pmid: N/A

The paper promotes a new methodology and associated toolkit to develop, imple ment and re-use event-driven study simulations with continuous variable integration. Methodology relies on a Booch-like decomposition of a real-world problem into classes and communications. Simulation motor and toolkit are described briefly and a descriptive example illus trates the methodology.

Sisle, Mitch

doi: 10.1177/003754979406300306pmid: N/A

Hayuth, Y.; Pollatschek, M.A.; Roll, Y.

doi: 10.1177/003754979406300307pmid: N/A

The development of a simulation software for port operation is described, with special emphasis on considerations for choosing both software and hardware. These consider ations, along with input and output requirements, led to a decision to write the software in C and to use simulation library SSS. The resulting software is portable, flexible and comprehensive, it addresses multiple port functions, various ship arrival patterns, fleet composition, labor and productivity issues. It is the only simulation model known to deal with coordination between terminals in more than one port.

O'Neill, Brian

doi: 10.1177/003754979406300308pmid: N/A

McLeod, John; McLeod, Suzette

doi: 10.1177/003754979406300309pmid: N/A

Herewith our edited version of material which appeared in OPTIONS, published by the International Institute forApplied Systems Analysis, Laxenburg, Austria. The articles concern work by participants in IIASA's Young Scientists' Summer Program on problems of river water quality management. The research built on, and contributed to, an ongoing study by IIASA's Water Resources project on Water Quality Management of Degraded River Basins in Central and Eastern Europe. - JM