Chung-Won Lee1, Yong-Seong Kim2, Dong-Su Chang3, Yun-Wook Choo4, Gunn Heo5
1Kangwon National University, Chuncheon, Gangwon-Do, Korea, kucivil@hanmail.net
2Kangwon National University, Chuncheon, Gangwon-Do, Korea, yskim2@kangwon.ac.kr
3Kangwon National University, Chuncheon, Gangwon-Do, Korea, woogawa@naver.com
4Korea Advanced Institute of Science and Technology, Daejon, Korea, ywchoo@kaist.ac.kr
5Rural Research Institute, Korea Rural Community Corporation, Ansan, Gyeonggi-Do, Korea, guns8206@gmail.com
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