Dr. Fei Hu is an associate professor in the Department of Electrical and Computer Engineering of the University of Alabama, Tuscaloosa, USA. His research interests include sensor networks, wireless networks, network security and their application to Bio-Medicine. His research has been supported by U.S. NSF, Cisco, Sprint, and other sources. He obtained his Ph.D. degrees at Tongji University, Shanghai, China, in the field of Signal Processing, and at Clarkson University, New York, USA, in the field of Electrical and Computer Engineering. He holds M.S. and B.S. degrees in Telecommunication Engineering from Shanghai Tiedao University and has published over 100 journal/conference papers and book chapters. Dr. Xiaojun Cao is an assistant professor in the Computer Science Department of Georgia State University. He received his Ph.D. degree in Computer Science and Engineering from the State University of New York at Buffalo. Dr. Cao's research has been sponsored by U.S. National Science Foundation (NSF), IBM and Cisco's University Research Program. He is a recipient of the NSF CAREER Award, 2006-2011. Dr. Cao is working on modeling, analysis, and protocols/algorithms design of communication networks. Important among these are Optical Networking, Waveband Switching, Optical Burst Switching, Mobile Ad hoc Networks, Sensor Networks and Security, and Optical Wireless Communications.He holds a B.S. degree from Tsinghua University as well as a M.S. from the Chinese Academy of Sciences.