1. Postdoctoral Student, Dept. of Civil Engineering, Queen’s Univ., 58 University Ave., Ellis Hall, Kingston ON, Canada K7L 3N6.
2. Assistant Professor, Dept. of Civil Engineering, Queen’s Univ., 58 University Ave., Ellis Hall, Kingston ON, Canada K7L 3N6.
3. Professor, Dept. of Civil Engineering, Queen’s Univ., 58 University Ave., Ellis Hall, Kingston ON, Canada K7L 3N6.
4. Professor, Dept. of Civil and Environmental Engineering, Michigan State Univ., 3546 Engineering Bldg., East Lansing, MI 48824-1226.