1. Graduate Student, Sonny Astani Dept. of Civil and Environmental Engineering, Viterbi School of Engineering, Univ. of Southern California, KAP 217, 3620 S. Vermont Ave., Los Angeles, CA 90089-2531.
2. Assistant Professor, Sonny Astani Dept. of Civil and Environmental Engineering, Viterbi School of Engineering, Univ. of Southern California, KAP 224C, 3620 S. Vermont Ave., Los Angeles, CA 90089-2531 (corresponding author).
3. Computer Scientist, Information Sciences Institute, Viterbi School of Engineering, Univ. of Southern California, Suite 1001, 4676 Admiralty Way, Marina del Rey, CA 90292.
4. Assistant Director, Information Sciences Institute, Viterbi School of Engineering, Univ. of Southern California, Suite 1001, 4676 Admiralty Way, Marina del Rey, CA 90292.