1. Postdoctoral Fellow, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, Taipei City 10672, Taiwan, ROC (corresponding author).
2. Professor, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, Taipei City 10672, Taiwan, ROC.
3. Professor, Dept. of Assets and Property Management, Hwa Hsia Institute of Technology, New Taipei City 23568, Taiwan, ROC.