1. Ph.D. Student, Faculty of Engineering and Applied Science, Univ. of Regina, Regina, Saskatchewan, Canada S4S 0A2.
2. Executive Director, Institute for Energy, Environment and Sustainability Research, UR-NCEPU, Univ. of Regina, Regina, Saskatchewan, Canada S4 S 0A2; and Institute for Energy, Environment and Sustainability Research, UR-NCEPU, North China Electric Power Univ., Beijing 102206, China (corresponding author).