1. Assistant Professor, School of Planning, Design, and Construction, Michigan State Univ., 201D Human Ecology Building, East Lansing, MI 48824 (corresponding author).
2. Associate Professor, Dept. of Architectural Engineering, The Pennsylvania State Univ., 104 Engr. Unit A, University Park, PA 16802.
3. Deceased September 15, 2009; formerly, Associate Professor, Dept. of Architectural Engineering, The Pennsylvania State Univ., 104 Engr. Unit A, University Park, PA 16802.