1. Senior Staff Engineer, MMI Engineering, 11490 Westheimer Rd., Suite 150, Houston, TX 77077; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, Univ. of Houston, Houston, TX 77204.
2. Professor of Civil Engineering, City Univ. London, London EC1V OHB, United Kingdom; formerly, Associate Professor, Dept. of Civil and Environmental Engineering., Univ. of Houston, Houston, TX 77204 (corresponding author).