1. Assistant Professor of Engineering, Department of Engineering Technology, Univ. of North Carolina at Charlotte, 9201 University City Blvd., Charlotte, NC 28223; formerly, Assistant Professor of Engineering, Structural Design and Construction Engineering Technology, Penn State Univ. at Harrisburg, 777 West Harrisburg Pike, Middletown, PA 17057-4898. E-mail: dscottre@uncc.edu