1. PhD, P.O. Box 130626, Carlsbad, CA 92013.
2. Associate Professor, Dept. of Civil and Architectural Engineering, IIT, 3201 South Dearborn Street, Room AM 228, Chicago, IL 60616.
3. Professor, Dept. of Civil and Environmental Engineering, Clarkson Univ., Box 5710, Potsdam, NY 13699.