1. Associate Professor, Computer and Information Technology, National Science Foundation George E. Brown, Jr. Network for Earthquake Engineering Simulation, Purdue Univ., West Lafayette, IN 47907 (corresponding author).
2. Professor, School of Electrical and Computer Engineering, National Science Foundation George E. Brown, Jr. Network for Earthquake Engineering Simulation, Purdue Univ., West Lafayette, IN 47907.
3. Professor, Dept. of Civil, Architectural, and Environmental Engineering, National Science Foundation George E. Brown, Jr. Network for Earthquake Engineering Simulation, Univ. of Texas, Austin, TX 78712.