1. Associate Professor of Air Traffic Management College, Civil Aviation Flight Univ. of China, Guanghan, China.
2. M.S. Student of Air Traffic Management College, Civil Aviation Flight Univ. of China, Guanghan, China.
3. Operation Supervisory Center, Civil Aviation Administration of China, Beijing, China.
4. Professor and Director, Pacific Northwest Transportation Consortium (PacTrans), Federal Region 10, Dept. of Civil and Environmental Engineering, Univ. of Washington, Seattle, WA.