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GIS 를 활용한 농산물 가공업체의 유통망 의사결정모형과 사례분석
김충실(Chung Sil Kim),박재화(Jae Hwa Park) 한국농업경제학회 2002 農業經濟硏究 Vol.43 No.3
This article presents a new methodology for marketing network decision making using geographic information system, in particular to food processing enterprises. GIS for decision making has three main components of (ⅰ) database with spatial data (network, location, etc.) and attributive data(road specification, fuel cost, etc.), (ⅱ) model with network analysis and traffic congestion cost analysis. There are financial accounting informations as well as informations about marketing network like as the optimal networks of distance, cost and time in the results of this study.
모델링을 이용한 밀식사과원의 재식거리, 재식방향 및 수고에 따른 광 이용 효율성 비교
김충실(Chung-Sil Kim),최병호(Byeong-Ho Choi),정영주(Young-Ju Jung),윤태명(Tae-Myung Yoon) 한국원예학회 2023 원예과학기술지 Vol.41 No.3
The Shadow patterns of various apple planting systems, and tree height are tracked using Sketch Up (Trimble, Inc. 3D Design software). A Model of a tall spindle established by combining planting distances applicable to Korea. The row orientation was set to four directions: N-S, NW-SE, NE-SW, and E-W. Each planting system simulated hours without sunlight-interference by the adjacent row and the sunlight-interference percentage in the canopy according to the adjacent tree during the growing season. The hours without sunlight-interference by adjacent rows on June 21 were N-S rows at 3.98 to 7.20 hours, NW-SE rows at 5.30 to 9.27 hours, NE-SW rows at 5.27 to 9.02 hours, and E-W rows at 10.38 to 11.78 hours. Sunlight-interference percentages in the morning and afternoon were as follows: N-S rows at 14.8% and 14.8%, NW-SE rows at 32.2% and 21.1%, NE-SW rows at 31.5% and 41.8%, and E-W rows at 53.6% and 50.4%, respectively. For the N-S rows, the overall growing season was favorable. E-W rows were unfavorable among row orientations due high interference level by adjacent trees. As the tree height increased from 2.5 to 5.0 m regardless of the row orientation, the hours without interference by adjacent trees decreased. However, an empirical test for light transmittance and radiation in the planting systems not considered in this study is additionally required.
지불의사 유도방식에 따른 온실가스 배출 감축의 편익 비교 분석
김충실 ( Chung Sil Kim ),이상호 ( Sang Ho Lee ) 한국환경정책평가연구원 2009 환경정책연구 Vol.8 No.3
이 논문에서는 전체 표본을 2개의 표본으로 분리하여 지불의사금액의 유도방식에 따라 WTP가 얼마나 차이가 있는가를 분석하였다. 즉 온실가스 감축의 편익 가치를 추정하기 위해 양분선택형 방식과 다중범위 이산선택형 방식을 비교 분석하였다. 주요 분석결과를 정리하면 다음과 같다. 첫째, 지불의사 유도방식에 따른 지불의사금액의 차이는 일반적 기대치와 일치하는 것으로 나타났다. 양분선택형 방식의 평균 WTP는 다중범위 이산선택형의 MBYES와 PRYES의 사이에 존재하는 것으로 분석되었다. 즉 양분선택형의 경우 월 평균 WTP가 7,470원인 반면 MBYES의 WTP는 11,999원이며 PRYES의 WTP는 6,704원으로 나타났다. 둘째, 선호 불확실성을 반영한 다중범위 이산선택형의 평균WTP는 정책의사 결정에 있어 다양한 판단기준을 제시할 수 있다. 즉 사업평가의 기준이 되는 편익/비용분석에 있어 선호불확실성의 정도를 반영한 다양한 사업평가가 가능하다는 것이다. This study attempts to investigate the preference uncertainty of respondents involved in stating their Willingness to Pay (WTP). For the Contingent Valuation Method (CVM) survey, we employed two approaches using two split samples. The respondents of one sample were given the opportunity to express intensity of preference through Multi-bounded Discrete Choice (MBDC) WTP questions, while those in the other sample were given Dichotomous Choice (DC) WTP questions. By incorporating the two elicited degrees of preference uncertainty into examining the WTP responses, we compared the two approaches. In comparing the DC model with the MBDC model, the mean WTP for the DC model was similar to PRYES in the MBDC Model. We concluded that the MBDC model estimates the various mean WTP while considering the preference uncertainty.