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...

Nowadays, in-flight comfort has become an essential characteristic to survive in domestic airline businesses. Air hostesses’ quality of service and response time to customer demand plays a vital role in enhancing quality of the flight experience and passenger satisfaction. However, additional requirements on air hostess expose them to fatigue which could eventually result in job dissatisfac...

Lower limb rehabilitation exoskeleton robots (LLRERs) play an important role in lower training and assistance walking for patients with movement disorders. In order to reduce eliminate adverse effects on the accuracy of human motion gait tracking during LLRER, which is caused by gravity friction, periodic ground shock force, human–exoskeleton interaction this paper proposes a feedforward–feedba...

This paper describes a software enviroment devised to support parallel and sequential discrete-event simulation. It provides assistance to the user in issues such as selection of the synchronization protocol to be used in the execution of the simulation model. The software framework has been built upon the bulk-synchronous model of parallel computing. The well-defined structure of this model al...

Importance sampling is the rare event provoking technique that is most frequently used for speed-up simulation of dependability and traffic models. Due to its sensitivity to the parameter settings, it is not yet ready for practical use. There exists a number of approaches for finding optimal, or at least good, parameters. The applicability of these and necessary extensions are discussed with re...

Parallel and distributed simulation techniques are consolidating as a potentially eeective way of improving elapsed time for discrete event simulation experiments of large system models. The common aim to all the approaches is to divide a single simulation program into logical processes (LPs) to be executed concurrently on individual processing nodes of a parallel computer. Two issues are criti...

AbstructComplex models may have model components distributed over a network and generally require significant execution times. The field of parallel and distributed simulation has grown over the past fifteen years to accommodate the need of simulation the complex models using a distributed versus sequential method. In particular, asynchronous parallel discrete event simulation (PDES) has been w...

Railway scheduling is a complex task of rail operators that involves the generation of a conflict-free train timetable. This paper presents a discrete-event simulation-based optimization approach for solving the train timetabling problem to minimize total weighted unplanned stop time in a hybrid single and double track railway networks. The designed simulation model is used as a platform for ge...

Test beds for multi-agent systems provide the means for experimenting with multiple agents that act and interact concurrently in their environment. Mostly, test beds constitute specialized tools which provide speci c scenarios for testing speci c agentarchitectures. To facilitate reuse and a exible compositional construction of experimental frames for multiagent systems, JAMES, a Java Based Age...