Process modeling and simulation based on extended UML activity and GPSS

There is little integration of process static modeling and simulation, which prevents simulation from becoming a mainstream modeling method/tool. In this paper UML activity diagram is firstly extended using UML extensibility mechanism for process simulation, which enhances UML activity diagrampsilas ability of describing process and adds some information which the simulation needs. Secondly, the principles and methods that can be used to translate extended activity diagram into the GPSS model are proposed, which realizes the integration of the static model and the dynamic model. Finally, a case study of a real process is conducted to illustrate the practical applicability and efficiency of the proposed methods.