He received a B.A. degree in Computer Science from Beijing University of Technology in China in 1993, an M.S. degree in Computer Science from the College of William and Mary in 2000, and a PhD degree in Computer Science from Dartmouth College in 2003. His research interests include parallel discrete-event simulation, high-performance modeling and simulation of communication networks and computer systems. Dr. Liu is a steering committee member for the PADS conference and an associate editor for the SIMULATIONS journal. Previously he served as the general co-chair for the 26th ACM/IEEE/SCS Workshop on Principles of Advanced and Distributed Simulation (PADS 2012), the general chair for MASCOTS ’10 and SIMUTools ’11, and as the program chair for SIMUTools ’10 and PADS ’08. He also served on the technical committees for many conferences.