1. Assistant Professor, Dept. of Civil and Environmental Engineering, Jackson State Univ., P.O. Box 17068, Jackson, MS 39217-0168 (corresponding author).
2. Professor, Dept. of Civil, Architectural, and Environmental Engineering-TRAN, Univ. of Texas at Austin, 1 University Station C1761, Austin, TX 78712-0278.
3. Associate Professor, Dept. of Mechanical Engineering, Univ. of Texas at Austin, 1 University Station C2200, ETC 5.120, Austin, TX 78712-0278.