1. NC State University,Dept. of Mechanial and Aerospace Engneering,Raleigh,NC,USA,27695-7910
2. Shonan Institute of Technology,Dept. of Materials and Human Enviromental Sciences,Fujisawa,Kanagawa,Japan,251-8511
3. Toyama Prefect. Univ.,Dept. of Engineering,Imizu,Toyama,Japan,939-0398