• 수산경영론집
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• 제53권1호
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• pp.55-72
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• 2022

The domestic catch of squid is decreasing every year. Import volume is increasing to replace these domestic products. Import volume is expected to increase in the future, so it is necessary to study import substitution. Therefore, in this study, after selecting frozen squid, which accounts for the majority of imported squid, as the target fish species, China, Chile and Peru, which account for the majority of frozen squid imports, will be selected as the target countries for analysis. Then, the demand function of squid is estimated using the Rotterdam model, the inverse Rotterdam model, AIDS and inverse AIDS, which are the simultaneous equation demand types, and then elasticity is derived. After that, these models are compared in terms of significance, theoretical fit and practical fit.

• 한국유기농업학회지
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• 제25권1호
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• pp.37-52
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• 2017

Three varieties of green pepper - Chungyang pepper, Cucumber-taste pepper and Nokgwang pepper - are competing with one another in consumption due to the overlapping shipment period. The objective of this study is to analyze the influence of monthly variations of shipment quantities on the wholesale market prices. A Linear Approximated Inverse Almost Ideal Demand System (LA/IAIDS) is employed with monthly data set of three different varieties of green pepper consumption. The results show that if there is an excess supply in the market, the rate of the price decline is larger for forcing culture Chungyang pepper than other pepper varieties. On the contrary, change in supply of cucumber-taste pepper and Nokgwang pepper has little effect on the price of Chungyang pepper. The results of this study can be utilized as a basic information for enhancing the farm income and promoting agricultural policies related to the establishment of self-help funds by Chungyang pepper producer groups in Gyeongnam region.

• 한국유기농업학회지
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• 제23권4호
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• pp.703-713
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• 2015

A Linear Approximated Inverse Almost Ideal Demand System, suggested by Eales and Unnevehr, is estimated with monthly data set of Korean fruits consumption. LA/IAIDS consists of 6 demand equations which correspond to domestically produced Hanrabong, overwintering mandarin, strawberry, melon and tomato with imported orange. The results indicate that price and scale flexibilities are negative, as expected. And the significance is that a 10% increase in imported orange quantity is associated with 5.5% declines in the price of Korean Hanrabong while the price of other fruits is minimally affected. In addition, the estimate of scale flexibility of Hanrabong (-2.96) is much smaller than any other fruit. Hanrabong farmer might be in the face of deficit operation as a consequence of the substitution effect if orange would be imported in accordance with the Korea-U.S. free trade agreement.

• 한국산학기술학회논문지
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• 제19권2호
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• pp.387-396
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• 2018

본 논문은 청양 풋고추 재배농가의 실질 소득과 순수익의 불안정 요인을 경영비분석을 통하여 규명하였다. 또한 역준이상수요체계에 따른 가격신축성 분석을 통하여 출하조절에 따른 가격안정화 방안을 제시하였다. 경영비 분석에 따른 농가의 소득 불안정 요인으로는 기후변화로 인해 예기치 못한 영농광열비 부담 가중과, 특정시점의 공급과잉에 따른 가격폭락 등으로 나타났다. 여기에서 말하는 가격폭락은 월별 가격의 변화를 포함하지 않으므로 청양 풋고추 농가소득 불안정의 요인으로 설명하기에는 한계가 있다. 따라서 월별 자료를 이용하여 가격 및 규모신축성 분석을 한 결과, 청양 풋고추에 국한하여 출하량을 연간 1% 축소할 경우 2.21%의 가격 상승으로 연간 농가판매 총수입이 1.21% 증가하는 것으로 밝혀졌다. 이를 통하여 동절기에 출하량을 감소시켜 농가수취가격을 지지하는 방안이 농가소득안정에 효과적이라고 판단되었다. 특히 경남지역의 청양 풋고추는 시장점유율이 82.5%로 매우 높은 편이므로 경남지역을 중심으로 생산자단체를 결성하여 출하량 조절을 한다면 효과적으로 가격 및 소득의 안정을 꾀할 수 있으리라 기대된다.