The response of many types of integrate and fire cells to synaptic input can be computed analytically and their threshold crossing either computed analytically or approximated to high accuracy via Newton approximation. The NEURON simulation environment simulates networks of such artificial spiking neurons using discrete event simulation techniques in which computations are performed only when e...

This paper describes the quantization–based integration methods and extends their use to the simulation of hybrid systems. Using the fact that these methods approximate ordinary differential equations (ODEs) and differential algebraic equations (DAEs) by discrete event systems, it is shown how hybrid systems can be approximated by pure discrete event simulation models (within the DEVS formalism...

Ecolabled products have shown a competitive advantage to other products. Regulatory changes and market pressure creates an increased need for environmental impact assessments. The dominating method for environmental impact assessments life cycle assessment (LCA) lacks support to properly analyze the dynamic aspects of business operations and production processes. This Paper proposes to use disc...

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We investigate coordination languages as support for the implementation of parallel discrete event sim ulators In particular we show that the computational model provided by coordination languages and based on the shared space abstraction is a suitable environ ment for the implementation of a new event based methodology we call ActE Active Events ActE nat urally solves the state sharing problem...

Understanding the behavior and benefits of contention managers is important for designing transactional memory implementations. Contention manager design is closely tied to other design decisions in a transaction memory implementation, and therefore experiments to compare the behaviors of contention managers are difficult. This paper presents a discrete event simulator that allows researchers t...

As the National Health Service (NHS) of England continues to face tighter cost saving and utilisation government set targets, finding the optimum between costs, patient waiting times, utilisation of resources, and user satisfaction is increasingly challenging. Patient scheduling is a subject which has been extensively covered in the literature, with many previous studies offering solutions to o...

At the 2010 OR Society Simulation Workshop, there was a lively panel discussion entitled “Discrete-event simulation is dead, long live agent-based simulation!” which was subsequently written up as a position paper for the Journal of Simulation. This paper continues that discussion and, to quote Mark Twain, argues that rumours of the death of DES are greatly exaggerated. There has undoubtedly be...

The paper discusses a layered design for a discrete event simulation framework based on the Beta programming language. A description of goals and motivation of simulation modelling is followed by a brief characterization of Beta and its suitability for work this area. After some general comments on the history and state of simulation programming the design of the BetaSIM framework is illustrate...

This paper describes the application of discrete event simulation to study continuous material flow. Logistics is an integrated part of most manufacturing companies. The purpose of this study is to determine the required logistics operations to allow continuous operations of a chemical manufacturing plant. The application has been used to provide critical decision support.