1. Dept. of Systems Engineering and Engineering Management, City Univ. of Hong Kong, Hong Kong.
2. Professor, Dept. of Architecture and Civil Engineering, City Univ. of Hong Kong, Hong Kong (corresponding author).
3. Professor, Dept. of Systems Engineering and Engineering Management, City Univ. of Hong Kong, Hong Kong.
4. Dept. of Architecture and Civil Engineering, City Univ. of Hong Kong, Hong Kong.