Tool Support of Developing Systems Simulation with Active Elements

A new approach to the simulation of developing systems is proposed and discussed. It is based on the idea on independent development of the so-called aspect models, whose interconnection is provided by tool computational environment. The main features of the approach are the abandonment of postulate of the deterministic behavior of systems if they are developed due to activity of elements and orientation parallel simulation event-driven elements behavior. We discuss their initial requirements of the tool support