1. Doctoral Student, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720 (corresponding author). E-mail: shamimp@ce.berkeley.edu
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Berkeley, CA 94720.
3. Doctoral Student, Dept. of Electrical Engineering and Computer Sciences, Univ. of California, Berkeley, CA 94720.
4. Professor, Dept. of Electrical Engineering and Computer Sciences, Univ. of California, Berkeley, CA 94720.