Ing-Ray Chen received the BS degree from the National Taiwan University, Taipei, Taiwan, and the MS and PhD degrees in computer science from the University of Houston. He is Program Director of the Computer Science Program at Virginia Tech's National Capital Region campus and a professor in the Department of Computer Science at Virginia Tech. Prior to joining Virginia Tech, he was a professor of the Department of Computer Science and Information Engineering at the National Cheng Kung University, Tainan, Taiwan, during 1995-96, and an associate professor of the Department of Computer and Information Science at the University of Mississippi, Oxford, Mississippi, USA, during 1989-1994. His research interests include mobile computing, wireless networking, security, trust management, data management, real-time intelligent systems, and reliability and performance analysis. He has published over 180 technical papers in these areas with over 25 appearing in prestigious IEEE Transactions journals. Dr. Chen currently serves as an editor for IEEE Communications Letters, IEEE Transactions on Network and Service Management, Wireless Personal Communications, Wireless Communications and Mobile Computing, The Computer Journal, Security and Network Communications, and International Journal on Artificial Intelligence Tools. He is a member of the IEEE and ACM.