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강한애 ( Kang Han-ae ),박철형 ( Park Cheol-hyung ) 한국협동조합학회 2016 韓國協同組合硏究 Vol.34 No.3
본 연구는 단위농협과 단위수협의 신용사업을 경영효율성 측면에서 비교분석하였다. 2015년도의 단위농협과 단위수협 재무제표 상의 여러 항목들 중 투입물로는 감가상각비, 출자금, 직원 수 그리고 산출물로는 예금액, 대출액을 이용하여 자료포락분석으로 효율성을 추정하였다. 분석은 단위 농협 및 수협 각 62개씩 총 124개의 전국 단위조합을 대상으로 하였다. 분석은 다양한 자료포락분석의 모형을 적용하였다. 우선 단위농협의 효율성 평균은 기술효율성 85%, 순수기술효율성 92%, 규모효율성 93%로 나타났다. 단위수협은 기술효율성 87%, 순수기술효율성 91%, 규모효율성 96%로 분석되었다. 두 단위조합을 단순 통합시킨 효율변경 상에서는 기술효율성 79%, 순수기술효율성 87%, 규모효율성 92%의 효율성이 추정되었으며, 농협의 효율성 평균이 더 높은 것으로 분석되었다. 또한 두 단위조합의 DEA 분석결과를 비교한다면 단위수협은 단위농협에 대한 벤치마킹의 필요성이 있으며, 결합비율 및 규모의 개선이 단위농협보다 더 시급한 것으로 분석된다. 효율변경이 겹치는 지점에서 비볼록성을 가정하는 시스템-자료포락분석, 상대그룹의 효율변경 상에서 추정하는 쌍방-자료포락분석을 실시하였다. 두 모형에서 추정된 단위농협과 단위수협의 효율성이 유의한 차이가 존재하는 지 확인하기 위해 순위합검정을 실시하였다. 분석결과 단위농협의 효율성이 단위수협의 효율성보다 유의적으로 높게 나타났다. This study aims to examine and compare the management efficiency of the credit business of unit NongHyup and unit SuHyup. The total number of DMUs is 124 (NongHyup has 62 units and SuHyup has 62 units). The analysis applied the DEA method to estimate efficiency, using data from the 2015 financial statements. We used number of employees, depreciation costs, invested money, and operating costs as inputs and loans and deposits as outputs of the model. We used various DEA models to examine efficiency. The average efficiency of unit NongHyup was 85% technical efficiency, 92% pure technical efficiency, and 93% scale efficiency. The average efficiency score of unit SuHyup was analyzed as 87% technical efficiency, 91% pure technical efficiency, and 96% scale efficiency. As pooling two cooperatives together in a frontier, the result was estimated as a technical efficiency of 79%, pure technical efficiency of 87%, and a scale efficiency of 92%. Also, System-DEA and Bilateral-DEA models were applied to compare the two cooperatives. By conducting a rank-sum test from the efficiency of both models, we discovered that the efficiency of unit NongHyup is significantly higher than that of unit SuHyup. The results of the study also show that unit SuHyup requires to benchmark unit NongHyup relatively more and improve both its scale and proportion of inputs.
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강한애(Han-Ae KANG),박철형(Cheol-Hyung PARK) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.6
This study is to estimate the production efficiency of abalone aquaculture and to find its determinants utilizing the survey data of operating expenses in 2015. The first part of the analysis applied both DEA and Super-DEA for the estimation of efficiency of each aquaculture household as DMU. We used wages, feeding costs and area as inputs and annual profits and sales as outputs of the model. The second part of the study applied both Tobit and OLS for the identification of determinants of the efficiency. We investigated cost-ratio, depreciation costs, careers, value of living seeds, cleaning costs of farming ground and a ratio of 1 and 2 year-old abalone at shipment as potential determinants. The estimation results show us that the average technical efficiency, pure technical efficiency, and scale efficiency score turn out to be 72%, 81% and 85% respectively. The Super-BCC and Super-CCR models reveal their average efficiency scores as 81% and 80%. All of the variables used to identify the determinants of the efficiency. The study results suggests that the production efficiency can be improved by cleaning farming ground and hence lowering the death rate of seeds.
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안유정(An, Yu Jeong),강한애(Kang, Han Ae),김봉태(Kim, Bong Tae) 한국해양수산개발원 2022 해양정책연구 Vol.37 No.1
This study analyzed the characteristics of each operational method of the tariff-rate quota (TRQ) system for fishery products, which has been widely introduced in Koreas free trade agreements (FTA). For this purpose, we examined the fill rate of quota, import characteristics, and the impact on import demand as well as its elasticity for major items such as shrimp, clam, and sole. According to the analysis results, the fill rate was low on a first-come-first-served basis, contrary to general expectations. Moreover, in the open competitive bidding method, the unit price of the quantity within the quota was significantly higher than that of the quantity outside the quota due to the importers pursuit of margins. In addition, it was found that the operation of the TRQ system affected an increase in shrimp imports and the elasticity of import demand, but no other cases were confirmed. These results can be used as a reference for Koreas additional FTA negotiations.
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