1. Associate Dean and Professor, College of Engineering, Southern Illinois Univ. Carbondale, Carbondale, IL 62901-6603 (corresponding author).
2. Associate Professor, Civil and Environmental Engineering, Pennsylvania State Univ., University Park, PA.
3. Professor, School of Engineering, Computing and Mathematics, Univ. of Exeter, U.K.
4. Senior Engineer, BEM Systems, Inc., West Palm Beach, FL.
5. Associate Professor, Civil and Environmental Engineering, Old Dominion Univ., Norfolk, VA.