1. Research Scholar, School of Civil and Environmental Engineering, Nanyang Technological Univ., Block N1, B4b-06, 50 Nanyang Ave., Singapore 639798.
2. Associate Professor and Vice Dean, School of Civil & Environmental Engineering, Nanyang Technological Univ., Block N1, 1A-02, 50 Nanyang Ave., Singapore 639798.
3. Associate Professor, School of Civil & Environmental Engineering, Nanyang Technological Univ., Block N1, 1C-80, 50 Nanyang Ave., Singapore 639798.