1. Ph.D. Student, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., 181 Chatham Rd. South, Kowloon, Hong Kong SAR.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., 181 Chatham Rd. South, Kowloon, Hong Kong SAR (corresponding author).
3. Professor, School of Tourism and Hospitality Management, Univ. of the South Pacific, Laucala Campus, Suva, Fiji Islands.
4. Assistant Professor, Dept. of Environmental Engineering, National Cheng Kung Univ., No. 1 University Rd., Tainan City 70101, Taiwan.
5. Assistant Professor, Dept. of International Business, Tunghai Univ., No. 1727, Sec. 4, Taiwan Blvd., Taichung 40704, Taiwan.
6. Chair Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., 181 Chatham Rd. South, Kowloon, Hong Kong SAR.