1. Professor, Department of Civil Engineering , National Pingtung University of Science and Technology , 1, Shuefu Rd., Neipu, Pingtung 912, Taiwan . Telephone: +886-8-7703202. Fax: +886-8-7740122.
2. MS, Department of Civil Engineering , National Pingtung University of Science and Technology , 1, Shuefu Rd., Neipu, Pingtung 912, Taiwan .