1. Postdoctoral Research Scholar, Dept. of Civil Engineering, Univ. of Kentucky, Lexington, KY 40506-0281 (corresponding author).
2. Associate Professor, Dept. of Civil and Coastal Engineering, Univ. of Florida, P.O. Box 116580, Gainesville, FL 32611-6580.
3. Doctoral Student, Dept. of Civil and Coastal Engineering, Univ. of Florida, P.O. Box 116580, Gainesville, FL 32611-6580.
4. Doctoral Student, School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Dr., Atlanta, GA 30332-0355.