Concurrent simulation with entity life modeling: an airport simulator using Ada

The authors present the design and implementation of an airport simulator based on the entity-life model. The concurrency features of Ada, combined with the design principles of the entity-life model, are shown to be very appropriate to the airport simulation problem, which is inherently concurrent. The tasks resulting from the design based on the entity-life model were mostly isomorphic to the real-world entities they represent and thus helped make the design simpler in addition to capturing real-world concurrency which is so vital to many applications. The modern language features of Ada, particularly its concurrency mechanisms, and design principles such as entity-life modeling clearly demonstrate the viability of Ada as a language for simulation