1. Associate Professor, School of Civil and Environmental Engineering, and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332 (corresponding author).
2. Associate Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332.
3. Ph.D. Candidate, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332.
4. Professor, Dept. of Civil and Environmental Engineering, Univ. of South Carolina, Columbia, SC 29208.