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Demand for Meat and Fish Products in Korea
( Jione Jung ),( Won W. Koo ) 한국농촌경제연구원 2002 Journal of Rural Development Vol.25 No.2
The Korea livestock industry is currently facing the critical challenge of the market liberalization trend under the World Trade Organization. This study analyzes the consumption behavior of meat and fish products in Korea, by estimating the Linear Approximate/Almost Ideal Demand System(LA/AIDS) for Korean meat and fish products. The empirical results indicate that beef imports in Korea would increase in the future under trade liberalization. If cheap and better quality imported beef is introduced to Korean consumers, Hanwoo beef would not be able to maintain its market share.
Estimation of Demand For Meat In Korea
( Won W. Koo ),( Seung Ryong Yang ),( Chang Buhm Lee ) 한국농촌경제연구원 1993 Journal of Rural Development Vol.16 No.2
This study estimates the Korean meat demand, using a general switching AIDS model, and tests if the demand structure changes over time. The demand for beef, pork, chicken, and other meat products is estimated, using annual data from 1970 to 1989. The separability test suggests that fish does not have to be included in this meat demand analysis. The results indicate that structural change in meat consumption occurred between 1977 and 1989, possibly with no termination during the sample period. Significant structural changes are detected in the beef and pork demands, but not in the chicken demand. While price elasticity of beef remains inelastic before and after the structural change, demand for pork becomes less price elastic and that for chicken more elastic after the structural change.
( Dae-heum Kwon ),( Won W. Koo ) 한국농업정책학회 2011 농업경영정책연구 Vol.38 No.3
This study investigates the effects of exchange rate on the trade balance of grain and horticulture products. To address methodological issue in traditional aggregation and recent disaggregation methods across countries, the mean group (MG) and pooled mean group (PMG) estimators are utilized. Results based on combination of pooling and averaging suggest that (i) the grain trade is more sensitive than the horticulture trade to the exchange rate movement in the long-run; and (ii) the J-curve phenomenon may exist in the grain trade, while such a possibility is very low in the horticulture trade.
元炳旿,禹漢貞,金相旭,具太會,李斗杓,崔東信 경희대학교 한국조류연구소 1986 연구보고 Vol.1 No.-
The Han River is an important river where some twentys pecies of waterbirds yearly visit for staging or wintering-including some species of surface-water (or inland-water ducks), geese, and diving ducks which are dominant. The river, which has the capacity for more than 15,000 waterbirds and which is located in their migrating route, is considered essential for their surviving. As we know, the accepted ornithological criteria for assigning international importance to wetlands as propounded by the International Wetlands Conferences in Ramar, Iran(1972) and Heiligenhafen, West Germany(1974) are: (ⅰ) the wetland should support at least 1% of the population of one or more species of waders or waterfowl in an international flyway. In the present context this constitutes Europe and North Africa; (ⅱ) the wetland should support totals of 20,000 or more waders and/or more than 10,000 wildfowl of all species. However, the number of the waterfowl visiting the Han River every year exceeds the figures suggested above for wetland criteria in Europe or North Africa. Thus, the Han River is regarded very important both domestically and internationally. The decrease in the past twenty years in the number of waterfowl and waders migrating to this river is largely due to the water pollution caused by industrial sewage and insecticides flowing into Han River and to the development of agricultural and recreation areas within the river which have encroached and impoverished habitats. For minimizing negative ecological impacts on wildfowl from the factors mentioned above and from Han River developing projects, constant efforts should be made for effective supervision and rational administration for nature conservation through scientific surveys and researches.
Price Transmission Channels of Energy and Exchange Rate on Food Sector
Dae-Heum Kwon(권대흠),Won W. Koo(구원회) 에너지경제연구원 2013 에너지경제연구 Vol.12 No.1
최근에 발생한 에너지와 식료품의 동시적 가격급등현상으로 인해 에너지 부문의 급격한 변화가 식품가격에 어떻게 영향을 미치는가에 대한 관심이 높아졌다. 이 연구에서는 그랜져 인과관계 개념을 바탕으로 에너지 가격과 환율이 식품가격에 영향을 주는 인과구조를 실증적으로 밝히고자 하였다. 이전의 연구와 달리 분석대상변수의 시계열적 특성에 영향을 덜 받는 Toda and Yamamoto(1995) and Dolado and Lutkepohl(1996)의 그랜져 인과관계 검증 모형을 도입하였다. 또한 에너지와 식품 각각의 가공단계별(Stage of Processing) 가격자료를 활용함으로써 에너지와 식품 각각의 단일 가격자료만을 분석한 선행연구 보다 더욱 상세한 인과구조분석을 수행하였다. The recent concurrent surges of food and energy prices renew our interest on the vulnerability of food system to sudden changes in the energy sector. Unlike previous studies focusing on the impacts of a single energy price on food sector, this study explores such dependency utilizing various food and energy prices classified by stage of processing. Based on the method proposed by Toda and Yamamoto(1995) and Dolado and Lutkepohl(1996) of Granger causality tests, we identify how the movements of the exchange rate and the various energy prices affect on the food prices from farmers to consumers.
유방암의 원발 종양 및 전이 림프절의 p53 변이양상 및 MIB-1 Index 비교
민연기(Youn Ki Min),조성진(Seong Jin Cho),김남렬(Nam Ryeol Kim),조민영(Min Young Cho),정석인(Suk In Jung),배정원(Jeong Won Bae),원남희(Nam Hee Won),서성옥(Sung Ock Suh),김영철(Young Chul Kim),구범환(Bum Whan Koo),황정웅(Cheung Wung W 대한외과학회 2001 Annals of Surgical Treatment and Research Vol.61 No.4