1. Post Doctoral Fellow, International Research Institute for Climate Prediction, Columbia Univ., 64 Route 9W, Palisades, NY 10964; formerly, Graduate Student, Dept. of Civil Engineering, Colorado State Univ., Fort Collins, CO 80523.
2. Professor, Dept. of Civil Engineering, Colorado State Univ., Fort Collins, CO 80523.
3. Emeritus Professor, Dept. of Statistics, Colorado State Univ., Fort Collins, CO 80523.