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국내 육종업체의 기술 및 규모효율성 분석 -민간육종연구단지 조성을 계기로-
김은순,최세현,조재환,정용관,나정현,Gim, Uhn-Soon,Choi, Se-Hyun,Cho, Jae-Hwan,Jung, Yong-Gwan,Lah, Jung-Hyun 한국유기농업학회 2014 韓國有機農業學會誌 Vol.22 No.1
The purpose of this paper was to measure technical efficiencies and scale efficiencies of Korean seed industry by DEA method, and to identify the factors affecting the efficiencies by Tobit regression model. Survey data of 50 seed companies nationwide were applied for the analysis. The average score of overall technical efficiency for the surveyed companies in 2012 was 0.44, which is decomposed into pure technical efficiency 0.68 and scale efficiency 0.63. A majority of the seed companies exhibited at least one form of inefficiency except a few companies in optimal scale. It was also shown the most companies were operating in the stage of increasing returns to scale, which implies Korean seed companies are mainly in smaller scale than optimal. Additional results suggest that the Center for Private Seed Companies, which will be established at Gimje in 2015, plays an important role to make domestic seed companies improve their scale efficiency as well as pure technical efficiency by way of enlarging their size and co-using the high technology in the Center.
An Analysis of Disparity between Korean Farms: measuring production efficiencies by farm size
김은순,Gim, Uhn-Soon Institute of Agricultural Science 2005 Korean Journal of Agricultural Science Vol.32 No.2
이 연구는 근래 한국 농가계층간에 경쟁력 수준의 격차가 확대되는 원인을 생산기술효율 측면에서 계측하고 비교분석하는 것을 목적으로 한다. 비모수적 접근방법을 사용하여 농지규모계층별 농가의 생산기술효율을 측정하고, 이는 다시 순수기술효율과 규모효율로 분리 계측되어 농가계층간 격차의 원인을 비교분석하였다. 1998-2002년 기간에 한국농가평균 순수기술효율은 0.54, 규모효율은 0.93으로 계측되었고, 대농층으로 갈수록 순수기술효율은 높은데 비해 규모효율은 낮게 나타났다. 그러나 5년(1998-2002년)기간 동안 대농층일수록 순수기술효율과 규모효율 모두 여타의 계층보다 빠르게 증가하는 추세를 보였으며, 이는 결과적으로 시간이 경과함에 따라서 대농층과 여타농과의 기술의 격차가 확대되고 있는 것으로 해석된다.
김은순 ( Uhn Soon Gim ),류문현 ( Mun Hyun Ryu ),이제일 ( Je Il Lee ) 한국환경정책학회 2013 環境政策 Vol.21 No.4
The purpose of this study was to review Australian water reform known to make substantial progress for institutionalizing environmenta1water allocations, and to learn some lessons for wise water use in Korea. Widespread concern about environmental deterioration and overallocation of water resources was a principal driver for Australian water reform in 1990s. However, lack of progress in returning water to overallocated systems led the comprehensive reform in 2000s. Especially the federal government approved legislation-the Water Act 2007, and committed commonwealth government to implement environmenta1 watermanagement inMurray-Darling Basin where is highly populated andmost heavily usedwater resources. Providingwater for environmental benefit was central to the reform, based on economic instruments including water market for selling and buying water entitlement. Institutional aspects such as making laws and regulation and restructuring institutions have satisfactorily progressed, yet providing water to overallocated rivers and groundwater systems has proven to be the most difficult component of the reform. The Australian case hints us that the institutional aspects as well as financial supports fromthe federal government were the most important factors for the progress, along with scientific assessment and consequent monitoring. Combined with the proper allocation of reserved water from the recent 4 Big River Projects, securing environmental water for healthy sustainable river environmentwill be amain theme for the futurewatermanagement in Korea.
Asymmetry in Advertising-Demand Response: An Application to Korean Pork
김은순 ( Uhn Soon Gim ),( Nazia Tabassum ),조재환 ( Jae Hwan Cho ) 한국농업경제학회 2012 農業經濟硏究 Vol.53 No.1
This study investigates asymmetry in demand response to advertising b introducing a demand model with a smooth transition function that allows demand to respond asymmetrically to increasing and decreasing advertising changes, as a case study of generic advertising on Korea Pork. Considering the carry-over effect of advertising, the model combines the exponential distributed lag function. Asymmetry is found to exist in case of Korean pork. Particularly positive asymmetric advertising rersponse exists, which indicates that an increase in pork advertising had a more profound impact on pork demand than a decrease did.The estimates of pork demand elasticities with respect to increases and decreases in advertising goodwill were 0.097 and -0.0156, respectively. Given the amount of total available advertising expenditures, a pulsing advertising policy is recommended with more frequent fluctuation in advertising expenditures on Korean pork in order to promote its consumption.