Jean Walrand, a professor in the Department of Electrical Engineering and Computer Science at UC-Berkelely, is a recipient of the Lanchester Prize and a fellow of both the IEEE and the Belgian American Educational Foundation. His research interests include stochastic processes, queuing theory, communication networks, and control systems. His other books include An Introduction to Queuing Networks (1988) and Communication Networks: A First Course (1998). He is co-founder of Odyssia Systems, a Berkeley-based company specializing in the development of IP-QoS systems. <