1. Postdoctoral Research Associate; formerly, Graduate Research Assistant, ATLSS Research Center, Dept. of Civil and Environmental Engineering, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015.
2. Bruce G. Johnston Professor, ATLSS Research Center, Dept. of Civil and Environmental Engineering, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015 (corresponding author). E-mail: jmr5@lehigh.edu