Affiliation: | 1Captain, Air Force Studies and Analyses Wing, Republic of Korea Air Force, Gyeryong, 501-317, Korea. E-mail: park-pjj@hanmail.net 2Graduate Research Assistant, School of Civil and Environmental Engineering, Yonsei Univ., Seoul 120-749, Korea. E-mail: ikim@yonsei.ac.kr 3Graduate Research Assistant, School of Civil and Environmental Engineering, Yonsei Univ., Seoul 120-749, Korea. E-mail: changyoonkim@yonsei.ac.kr 4Associate Professor, School of Civil and Environmental Engineering, Yonsei Univ., Seoul 120-749, Korea (corresponding author). E-mail: hyoungkwan@yonsei.ac.kr
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