Petri nets: an introduction
Towards Dynamically Administered Role-Based Access Control
DEXA '03 Proceedings of the 14th International Workshop on Database and Expert Systems Applications
A Generalized Temporal Role-Based Access Control Model
IEEE Transactions on Knowledge and Data Engineering
A Role-Based Approach to Group Support in a Collaborative Learning Environment
ICALT '05 Proceedings of the Fifth IEEE International Conference on Advanced Learning Technologies
GRIDCOLE: a Grid Collaborative Learning Environment
CCGRID '04 Proceedings of the 2004 IEEE International Symposium on Cluster Computing and the Grid
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In the collaborative learning environment, role behavior brings on occurrence, development, and disappearance of collaborative learning. In this paper, we first introduce WF-net to describe role behavior in collaborative learning, and then indicate relations among some notions in collaborative learning. We focus on dynamic organization of learning pattern by awareness of role. We represent a mechanism of generating tasks oriented role to ensure persistence of collaborative learning.