Institution: | 1. Department of Environmental and Civil Engineering, Southern Methodist University, P.O. Box 750335, Dallas, TX 75275, United States;2. College of Business, Embry-Riddle Aeronautical University, 600 S. Clyde Morris Blvd., Daytona Beach, FL 32114, United States;3. Information Services Division, United Airlines, P.O. Box 66100, Elk Grove, IL 60666, United States |