1. Postdoctoral Scholar, Engrg. Systems Dept., Univ. of California, Los Angeles, Calif
2. Operations Research Analyst, Div. of Data Process., Bureau of Reclamation, Sacramento, Calif
3. Hydr. Engr., Water and Power Control Div., Bureau of Reclamation, Sacramento, Calif
4. Assoc. Prof., Engrg. Systems Dept.. Univ. of California, Los Angeles, Calif