1. Research Assistant, IIHR–Hydroscience and Engineering, College of Engineering, Univ. of Iowa, Iowa City, IA 52242.
2. Professor, IIHR–Hydroscience and Engineering, College of Engineering, Univ. of Iowa, Iowa City, IA 52242.
3. Research Engineer, IIHR–Hydroscience and Engineering, College of Engineering, Univ. of Iowa, Iowa City, IA 52242.