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고상환 ( Sang Hwan Ko ) 한국축산경영학회 2010 농업경영정책연구 Vol.37 No.4
This paper is aiming at suggesting a direction for improvement for strengthening competitive power by performing a positive analysis on the difference of profitability and productivity based on farmhouse survey and the level of utilizing production elements effectively. As the result of analyzing the structure of input-output by the seeding method of carrot, the method of line sowing is proved to consume less labor and seed, and harvest more products when market value is reflected, so it is assumed to be a more effective production technology than broadcasting planting. And this assumption is verified by the result measuring the production function to which dummy variables are added. As the result of analyzing the efficiency of production elements utilizing parameters, came from the result to measure production functions, first of all, VMPA is bigger than 1, thus cultivating acreage utilizing these 2 seeding methods will be probably increased through rent. However, VMPL is smaller than 1 in both seeding methods, and this phenomenon is analyzed to come from excessive input. Specially, VMPL of broadcasting planting is around 0.77, and this phenomenon is analyzed to input labor ineffectively compared to 0.97, VMPL of line sowing utilizing machineries, Accordingly, to improve these phenomenon and to cultivate carrot to be more profitable and competitive corps, first, it is necessary to change spreading method to line sowing using machineries. second, more exact management is necessary to increase carrot quality, third, it is necessary to invent a farm machine available to run through work from spreading to harvesting. fourth, arranging production base to promote machinery introduction is urgently necessary.
고상환 ( Sang Hwan Ko ) 한국식품유통학회 2012 食品流通硏究 Vol.29 No.1
By grasping consumers` satisfaction of high-quality satsuma mandarin and their willings to pay, this study aims to organize suggestions given for production of more competitive satsuma mandarin. First of all, a survey was made for 423 housewives living in big cities with respect to satisfaction of satsuma mandarin which they eat at normal times. The result shows that average satisfaction level is normal and the highest dissatisfaction factor is not delicious, In the meantime, a survey was made to check satisfaction after having them taste satsuma mandarin with more than 12°Brix and less than 1% acid content. Average satisfaction was measured with 4.43 to a 5point of criteria. Adequate price for satsuma mandarin tasted by them was 2,427won/kg according to their suggestion and ratio of respondents was 94.8% who replied to purchase again at such price level. In conclusion, in order to promote consumption of Jeju satsuma mandarin, it is analyzed that an effort is required to supply them at high-quality through improvement of production infra and an enhanced of a sorting function.
감귤 비파괴 선별기의 이용 실태와 효율적 이용 방안에 관한 연구
고상환 ( Sang Hwan Ko ),위태석 ( Tae Seok Wee ) 한국식품유통학회 2013 食品流通硏究 Vol.30 No.2
A purpose of this study is to present improvement plan by analyzing use farmer and operation state for the non-destructive determinable selecting machine of citrus. in brief, as follows by the analysis results. the nondestructive determinable selecting machine there is all 15place in Jeju 2011. Introduction of the non-destructive determinable selecting machine of citrus grading criteria to focus on the quality of transition and to produce high-quality producers recognize the changes induced in the sense it can be regarded as positive. However, low capacity utilization(23%) of non-destructive determinable selecting machine, complex Grade setting, and screening system in conjunction with the production site to reflux system is not built yet were the assignments that need to be improved. And non-destructive seongwagi introduced to maximize the effect was considered for the related subject of active cooperation.
제주지역 귀농,귀촌 교육 참여자 특성 및 교육 만족도 분석
고상환 ( Sang Hwan Ko ),김동현 ( Dong Hyun Kim ) 한국농촌지도학회 2011 농촌지도와 개발 Vol.18 No.4
The purpose of this study was to examine the implication for the return farm and rural training program through the analyzed trainees` satisfaction and general characteristics. This study polled 89 trainees who presented the Return farm and rural training program by Jeju Agricultural Research and Extension Service. and the results of analysis are as follows. First, trainees` general characteristics appeared very various at an age structure, stage and type of return farm and rural. Second, the overall satisfaction level for the training program was normal but it was different according to the trainees` general characteristics, stage and type of Return farm and rural. This result was due to the unilateral training program. Consequently, it required a lot of efforts for the improvement of satisfaction through reflecting the trainees` properties in the training plan.