Khaled RagabK. Ragab is an assistant professor at Department of Computer Science, College of Computer and Information Technology, King Faisal University, Saudi Arabia. Moreover, he is on leave assistant professor of Computer Science at Department of Mathematic, omputer Science division, Ain Shams University. He joined Department of Computer Science, Tokyo University in 2005 as postdoctoral position. He was born in 1968 and received his B.Sc., M.Sc. degrees in Computer Science from Ain Shams University, Cairo, Egypt in 1990, 1999, respectively and Ph.D. degree in Computer Science from Tokyo Institute of Technology in 2004. He has worked in Ain Shams University, Cairo Egypt in 1990-1999 as assistant lecturer. He has worked as research scientist in Computer Science Dept., Technical University of Chemnitz, Germany in 1999-2001. His research interests include autonomous decentralized systems, Peer-to-Peer Systems, video streaming systems, Overlay Networks, Web-services and application-level multicast. Read More Read Less