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S.  Fan and Wanchun, D., ?Complex Problem Solving based on Complex Problem Definition Model?, Application Research of Computers, vol. 25, no. 3, 2008.\par \par D.  Wanchun, Chen, J., Fan, S., and Cheung, S. C., ?A context- and role-driven scientific workflow development pattern?, Concurrency and Computation: Practice and Experience, vol. 20, no. 15, pp. 1741-1757, 2008.\par \par S.  Fan, Wanchun, D., and Xiping, L., ?Context-aware Resource Access Control in Scientific Workflows?, Computer Engineering and Design, vol. 29, no. 2, 2008.\par \par D.  Wanchun, Chen, J., Liu, J., Cheung, S. C., Chen, G., and Fan, S., ?A Workflow Engine-Driven SOA-Based Cooperative Computing Paradigm in Grid Environments?, International Journal of High Performance Computing Applications, vol. 22, no. 3, 2008.\par \par X.  Liu, Wanchun, D., Chen, J., Fan, S., Cheung, S. C., and Cai, S., ?On Design, Verification, and Dynamic Modification of the Problem-Based Scientific Workflow Model?, Simulation Modeling Practice and Theory, vol. 15, no. 9, 2007.\par \par G.  Sanjun, Wanchun, D., and Fan, S., ?A Fuzzy Directed Graph-based QoS Model for Service Composition?, Wuhan University Journal of Natural Sciences, vol. 12, no. 5, 2007.\par \par }