Jungha Hwang PhD Professor School of Architectural, Civil, Environmental, and Energy Engineering Kyungpook National University #E2A-207, 80 Daehakro, Buk-gu, Daegu 41566, Republic of Korea Tel. +82-53-950-8544 Fax. +82-53-950-6590 E-mail: peter@knu.ac.kr