1. Ph.D., Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado, Boulder, CO 80309-0428. E-mail: lium@colorado.edu
2. Fazlur Rahman Khan Endowed Chair of Structural Engineering and Architecture, Dept. of Civil and Environmental Engineering, Lehigh Univ., 117 ATLSS Drive, Bethlehem, PA 18015. E-mail: dan.frangopol@lehigh.edu; formerly, Professor, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado, Boulder, CO 80309-0428.