1. Research Fellow, School of Civil and Environmental Engineering, Nanyang Technological Univ., N1-01a-29, 50 Nanyang Ave., Singapore 639798; formerly, Research Scholar, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, No. 1 Engineering Dr. 2, Singapore 117576 (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, No. 1 Engineering Dr. 2, Singapore 117576.
3. Professor of Uncertainty in Engineering and Head, Institute for Risk and Reliability, Leibniz Univ. Hannover, 30167 Hannover, Germany; Institute for Risk and Uncertainty, Univ. of Liverpool, Liverpool L69 3BX, U.K.; Shanghai Institute of Disaster Prevention and Relief, Tongji Univ., Shanghai 200092, China.
4. Research Fellow, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, No. 1 Engineering Dr. 2, Singapore 117576.