1. Assoc. Prof., Div. of Energy Engrg., and Research Engr., Iowa Inst. of Hydr. Research, Univ. of Iowa, Iowa City, Iowa
2. Adjunct Asst. Professor; Div. of Energy Engrg., and Research Engr., Iowa Inst. of Hydr. Research, Univ. of Iowa, Iowa City, Iowa
3. Prof.; Div. of Energy Engrg., and Research Engr., Iowa Inst. of Hydr. Research, Univ. of Iowa, Iowa City, Iowa