Research of Virtual Classroom''''s Cooperative Mechanism Based on Petri Net Technology
基于Petri网技术的虚拟教室协同机制的研究*

By taking advantage of Petri Net model, this paper in virtue of formalized method describes and analyzes cooperative relationship and cooperative mechanism between teacher and students, which exists in the virtual classroom. Simultaneously, the cooperative mechanism has been realized successfully with the theory about process control concurrence view.