1. Department of Mechanical Engineering, Virginia Tech , 445 Goodwin Hall, 635 Prices Fork Road - MC 0238, Blacksburg, VA 24061
2. Department of Mechanical Engineering, University of Maryland, Glenn L. Martin Hall , Building 088 College Park, MD 20742
3. School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln , 115E VDC, East Campus, Lincoln, NE 68583-0907
4. Department of Mechanical Engineering, Brigham Young University , EB360M, Provo, UT 84602 e-mail: