Simulation
Introduction: Today’s business managers are rapidly embracing modeling and simulation as required competencies. ... Simulation is a powerful tool for the analysis of new system designs, retrofits to existing systems, and proposed changes to operating rules. Simulation is a representation of an item of equipment, device, system, or subsystem in realistic form. Simulation enables the learner to experience the operation of the target equipment without possibility of destroying the equipment. Computer-based learning simulation contrasts with the very costly, single-purpose special simulators typified by aircraft simulators. ... Simulation is one of the modes of computer-assisted instruction. ... When the number of events are finite, we call the simulation "discrete event. ... In such cases "continuous simulation" is more appropriate, although discrete event simulation can serve as an approximation. ... edu/ntsbarsh/simulation/sim. ... Life cycle model of simulation: All systems initiate development with some statement of need, or requirements, and end (hopefully) with a protracted period of use. ... Steps in a Simulation Study Problem formulation Clearly state the problem. ... Data collection Collect the data necessary to run the simulation (such as arrival rate, arrival process, service discipline, service rate etc. ... Production runs and analysis Actual running the simulation, collect and analize the output. ... Verification of Simulation Models Make sure the conceptual model is translated into a computerized model properly and truthfully. ... Interactive Run Controller (IRC) or debugger is an essential component of successful simulation model building, which allows the analysist or the programmer to test the simulation program interactively. If one is modeling certain queueing system, the simulation results can be compared with theoretical results as upper or lower bound. ... Thourough documentation: by describing in detail what the simulation programmer has done in design and implementing the program, one can often identify some problems. Trace: go through a few steps in an actual program to see if the behavior is reasonable Verification of a simulation model is very similar in what a typical software product would have to go through. ... Simulation Software Selection: The vast amount of simulation software available can be overwhelming for the new users. ... What are the challenges in simulation? Simulation skills are scarce and expensive.