1. Ph.D. Student, Dept. of Construction Engineering and Management, Univ. of Colorado Boulder, Boulder, CO.
2. Assistant Professor, Dept. of Civil Engineering, Univ. of Nebraska, Lincoln, NE.
3. Research Faculty and Associate Director of Construction Safety Research Alliance, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado Boulder, Boulder, CO.
4. Associate Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC.