中文摘要：

E-mail： {tao, gqwu, wj}@otcaix.iscas.ac.cn Tao Huang received his M.S. and Ph.D. degrees from Department of Computer Science, University of Science and Technology of China in 1991 and 1994 respectively. Cur- rently he is a professor and Ph.D. supervisor in the Institute of Soft- ware, Chinese Academy of Sciences, and a CCF member. He has pub- lished more than 40 research papers and co-authored two books, and undertaken many research projects. His research interests include service oriented com- puting, middleware, software component technology, dis- tributed object technology. Guo-Quan Wu currently is a Ph.D. candidate in the Department of Computer Science and Technology, University of Science and Technology of China. He is also spensored by the joint Ph.D. program with Institute of Software, Chinese Academy of Sci- ences. His research interests include service oriented computing, business process management and aspect ori- ented software development. Jun Wei is currently a professor in the Institute of Software, Chinese Academy of Sciences, Beijing, China, also a CCF member. His research in- terests include service oriented com- puting, middleware, mobile comput- ing, software engineering. He received his B.Sc. and Ph.D. degrees in computer science from Wuhan University, Hubei, China in 1992 and 1997, respectively. He was a postdoctoral researcher at the Hong Kong University of Science and Technology, China. He has published over 50 papers in international journals and conferences.