1. Professor, Dept. of Civil and Environmental Engineering, Box 19308, The Univ. of Texas at Arlington, Arlington, TX 76019 (corresponding author).
2. Dept. of Civil and Environmental Engineering, Box 19308, The Univ. of Texas at Arlington, Arlington, TX 76019; formerly, Graduate Research Assistant.
3. Doctoral Research Assistant, Dept. of Civil and Environmental Engineering, Box 19308, The Univ. of Texas at Arlington, Arlington, TX 76019.
4. Associate Professor, Dept. of Civil and Environmental Engineering, Box 19308, The Univ. of Texas at Arlington, Arlington, TX 76019.