1. Department of Mechanical and Aerospace Engineering Missouri University of Science and Technology Rolla MO 65401 USA
2. J. Mike Walker ’66 Department of Mechanical Engineering Texas A&M University College Station TX 77843 USA
3. Department of Mechanical Engineering The University of Texas at El Paso El Paso TX 79968 USA
4. Department of Civil, Architectural and Environmental Engineering Missouri University of Science and Technology Rolla MO 65401 USA
5. Department of Biomedical Engineering Tianjin University Tianjin 300072 China