1. Professor and Head, Dept. of Construction Management, North China Electric Power Univ., Beijing 102206, China (corresponding author).
2. Research Assistant, Dept. of Construction Management, North China Electric Power Univ., Beijing 102206, China.
3. Associate Professor, School of Architecture and Built Environment, Entrepreneurship, Commercialisation and Innovation Centre (ECIC), Univ. of Adelaide, Adelaide 5005, Australia.