1. Assistant Professor, Dept. of Civil Architectural and Construction Management, Univ. of Wyoming.
2. Graduate Student, Dept. of Construction Engineering and Management, North China Univ. of Water Resources and Electric Power.
3. Associate Professor, Dept. of Construction Engineering and Management, North China Univ. of Water Resources and Electric Power.
4. Graudate Student, Construction Research and Innovation Lab, Dept. of Civil Architectural and Construction Management, Univ. of Wyoming.
5. Research Scientist, School of Energy Resources, Univ. of Wyoming.