1. Professor, Dept. of Civil and Geomatics Engineering, California State Univ., Fresno, CA.
2. Research Assistant, Dept. of Civil and Geomatics Engineering, California State Univ., Fresno, CA
3. Post-Bachelor Research Associate, Environmental Sciences Division, Oak Ridge National Laboratory, Water Power Program and Energy-Water Resource Systems Group, Oak Ridge, TN
4. Program Manager and Group Leader, Environmental Sciences Division, Oak Ridge National Laboratory, Water Power Program and Energy-Water Resource Systems Group, Oak Ridge, TN