1. Assistant Professor, Arizona State Univ., College Avenue Commons, 660 S. College Ave., Box 873005, Tempe, AZ 85287 (corresponding author).
2. Charles and Elinor Matts Professor, Dept. of Architectural Engineering, Pennsylvania State Univ., 104 Engineering Unit A, University Park, PA 16802.
3. Head and Professor, Dept. of Architectural Engineering, Pennsylvania State Univ., 104 Engineering Unit A, University Park, PA 16802.