1. Ph.D. Candidate, Sonny Astani Dept. of Civil and Environmental Engineering, Univ. of Southern California, Los Angeles, CA 90007.
2. Associate Professor, Sonny Astani Dept. of Civil and Environmental Engineering, Univ. of Southern California, Los Angeles, CA 90007 (corresponding author).
3. Professor and Chair, Dept. of Civil and Environmental Engineering, Univ. of Southern California, Los Angeles, CA 90007.