Affiliation: | 1. Department of Mechanical Engineering , National Chiao Tung University , Hsinchu, Taiwan 300, R.O.C.;2. Department of Mechanical Engineering , National Chiao Tung University , Hsinchu, Taiwan 300, R.O.C. Phone: 886–3–5726111 ext. 55155 Fax: 886–3–5726111 ext. 55155 E-mail: chtseng@cc.nctu.edu.tw) |