최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기바이오시스템공학 = Journal of biosystems engineering, v.34 no.6, 2009년, pp.391 - 396
홍영기 (Department of Agricultural Engineering, National Academy of Agricultural Science) , 이동훈 (Sungkyunkwan University) , 신익상 (Department of Agricultural Engineering, National Academy of Agricultural Science) , 김상철 (Department of Agricultural Engineering, National Academy of Agricultural Science)
The percentage of those aged 60 and over is 43.5% among our country's 3,186 thousands farming population, so farm village is getting aging society rapidly. Moreover agricultural competitiveness has being weakened due to labor shortage by degradation in quality of labor configuration from elderly por...
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