ABSTRACT
The limitations pertain to the structure of the queuing system, the way variability can be incorporated into the models, and the focus on steady-state analysis. Simulation can be done, for example, through physical models such as wind tunnels, through simulators where pilots or astronauts train by interacting with a computer in a virtual or artificial reality, or through computer-based models for the evaluation of a given technical system or process design. The rapid development of computer hardware and software in recent years has made computer simulation an effective tool for process modeling and an attractive technique for predicting the performance of alternative process designs. Simulation analysts must be effective at building the right model to represent the system under study. The risk of new implementations of these processes is low, because analysts know that with high probability, these processes will work as expected.
