1. Assistant Professor, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Kansas, Lawrence, KS 66045-7608 (corresponding author).
2. George T. Abell Distinguished Professor in Infrastructure, Dept. of Civil and Environmental Engineering, Colorado State Univ., Fort Collins, CO 80523-1372.
3. Professor of Dept. of Sociology and Director of the Natural Hazards Center, Univ. of Colorado-Boulder, Boulder, CO 80309.