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한 유럽 시골마을에 세워진 "책의 고성"-벨기에의 '레뒤마을'
신창섭,Sin, Chang-Seop 대한출판문화협회 1994 출판저널 Vol.150 No.-
이 글은 "MBC가이드" 94년 5월호에 게재된 신창섭씨의 현장리포트 "유럽의 책마을 레뒤를 아시나요?"를 전재한 것이다. 한적했던 중부유럽의 한 시골마을이 어떻게 해서 애서가들의 순례지로 각광받게 됐는가를 보여주는 이 글의 전재를 기꺼이 허락해준 "MBC가이드" 측에 감사를 드린다.
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Energy Efficiency Classification of Agricultural Tractors in Korea
신창섭,김경욱,김관우 한국농업기계학회 2012 바이오시스템공학 Vol.37 No.4
Purpose: This study was conducted to classify the energy efficiency of 131 tractor models tested during from 2006 to 2010in Korea. Methods: Four sub-indexes were developed using the fuel consumptions at 60% and 90% of rated speed with partial loads and at pull speeds of 3.0 km/h and 7.5 km/h with maximum drawbar pull. Weighting factors of the sub-indexes were also considered to reflect the characteristics of tractor’s actual working hours in Korea. Four sub-indexes were integrated into a classification index. Using the developed classification index, a five-classification system was made on the basis of normal distribution of tractors over the classification range. Percentage of 1st grade interval was expected to be close to 15%, 2nd grade 20%, 3rd grade 30%, 4th grade 20%, 5th grade 15%. Results: Number of 1st grade was 21, 2nd grade 23,3rd grade 39, 4th grade 33, 5th grade 15 among 131 models. Conclusions: Classification index was developed by integrating four sub-indexes. By the classification method using developed index, distribution of classified tractors was acceptable for practical application.
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