ABSTRACT
This chapter discusses some of the basic ideas behind modeling and simulation theory of modeling and simulation, the reader should refer to Zeigler; Zeigler, Praehofer, and Kim; and Zeigler to understand the details behind the mathematical background of this technique. Discrete-event simulation techniques were developed hand in hand with the creation of the computer. The separation of concerns and the use of a formal mechanism to describe each of the components allowed Discrete-event systems specification (DEVS) methodology to improve the creation of models and the execution of simulations. DEVS was created for modeling and simulating discrete-event dynamic systems; thus, it defines a way to specify systems whose states change either upon the reception of an input event or due to the expiration of a time delay. Coupled models group several DEVS into a composite model that can be regarded, due to the closure property, as a new DEVS model.
