This volume presents the accepted papers for the 4th International Conference onGridandCooperativeComputing(GCC2005), heldinBeijing, China, during November 30 - December 3, 2005.The conferenceseries of GCC aims to provide an international forum for the presentation and discussion of research trends on the theory, method, and design of Grid and cooperative computing as well as their scienti?c, engineering and commercial applications. It has become a major annual event in this area. The First International Conference on Grid and Cooperative Computing...