• 문화기술의 융합
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• 제5권2호
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• pp.183-188
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• 2019

본 연구는 단기금리, 환율 및 국제유가가 국제곡물가격에 미치는 영향을 EGARCH-GED 모형을 이용하여 분석하였다. 국제곡물가격의 자체 이전 수익률 중 1개월 이전의 수익률은 대부분의 기간에서 국제곡물가격에 유의한 양의 영향을 미치는 것으로 나타났다. 전체분석기간에서는 환율만이 국제곡물가격에 유의한 영향을 미치는 것으로 나타났다. 환율상승기간에서는 경제변수 중 어느 것도 유의한 영향을 미치는 않는 것으로 나타난 반면, 환율하락기간에서는 유가만이 유의한 양의 영향을 미치는 것으로 나타났다. 그리고 금융위기 이전의 기간에서는 금리, 환율, 유가가 모두 유의한 영향을 미치지 않았으나, 금융위기 이후의 기간에서는 유가만 국제곡물가격에 유의한 영향을 미쳤다. 결국 국제곡물가격에 영향을 미치는 요인은 시간의 경과에 따라 변화되고 있는 것으로 나타났다.

• Journal of the Korean Data and Information Science Society
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• 제28권1호
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• pp.67-74
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• 2017

본 논문은 기후와 국제곡물가격의 인과관계를 분석한다. 기후는 곡물시장에 영향을 미치는 중요한 요인이지만 국제곡물가격의 인과관계를 분석한 선행연구는 제한적이다. 본 논문은 대표적인 세계기후 변수인 해양표면온도 (sea surface temperature; SST)와 세계 3대 곡물인 밀, 옥수수, 콩의 국제가격을 이용하여 1987년 5월부터 2013년 7월까지 기간의 월별자료를 분석하였다. 분석방법으로서 비모수 커널방법으로 제시된 고차 적률 인과관계 개념 (Nishiyama 등, 2011)을 모수적인 방법으로 변환하여 적용하였다. 분석결과, 기후는 1차 적률에서 3개 곡물가격 모두에 대해 그리고 2차 적률에서 옥수수와 콩의 가격에 대해 각각 인과관계를 가지며 3차 적률에서는 3개 곡물가격 모두에 대해 인과관계를 갖지 않는 것으로 나타났다.

• 한국수자원학회논문집
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• 제56권12호
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• pp.883-893
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• 2023

2020년 기준 한국의 곡물자급률은 20.2%에 불과하지만 곡물수출국에서 발생하는 가뭄이 국내에 미치는 영향은 아직 면밀히 분석되지 않았다. 본 연구에서는 증발산 기반 가뭄지수인 Evaporative Stress Index (ESI)를 이용해 세계 주요 곡물생산지역의 농업가뭄의 발생빈도, 장기추세, 자연진동과의 상관성을 분석하였다. 또한 국제 곡물거래가격과 작물생산지역의 가뭄면적을 비교하여 해외에서 발생한 가뭄이 한국 경제에 미치는 영향을 정성적으로 평가하였다. ERA5 기후재분석자료로 산정된 ESI는 전지구적으로 토양수분과 강한 상관성을 보였으며 특히 작물재배 지역에서의 둘의 상관성이 매우 강하게 나타났다. 작물재배지역에서의 높은 상관성은 강한 지면-대기결합을 의미하며, 이 때문에 작은 토양수분 부족이 상대적으로 큰 수확량 손실로 연결될 가능성이 크다. 1991-2022 기간 작물재배지역에서 ESI는 뚜렷한 감소추세를 보였으며 지구온난화와 함께 가뭄면적이 증가할 가능성이 있다. 2012년과 2022년에 급격히 상승한 국제곡물가격은 수출국에서 발생한 대규모 가뭄과 밀접한 관계가 있는 것으로 분석되었으며 한국의 생산자물가지수를 상승시킨 주요 원인 중 하나로 판단된다. 본 연구는 해외지역에서 일어나는 가뭄의 영향을 줄이기 위해 감시와 위험관리 전략이 필요함을 시사한다.

• 한국시스템다이내믹스연구
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• 제10권3호
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• pp.105-124
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• 2009

The situation of the global food markets has been being rapidly restructured and entering on a new phase by new dynamic and driving forces. The factors such as economic growth and income increase, high energy price, globalization, urbanization, and global climate change are transforming patterns of food consumption, production, and markets. The prices and markets of world food and energy are getting increasingly linked each other. Food and fuel are the global dilemma issues associated with the risk of diverting farmland or of consuming cereals for biofuel production in detriment of the cereals supply to the global food markets. An estimated 100 million tons of grain per year are being redirected from food to fuel. Therefore, the objectives of this study are as follows: Firstly, the study examines situations of the world food and energy resources, analyzes the trends of prices of the crude oil and biofuel, and formulates the food-energy links mechanism. Secondly, the study builds a simulation model, based on system dynamics approach, for not only analyzing the global cereals market and energy market but also forecasting the global production, consumption, and stock of those markets by 2030 in the future. The model of this study consists of four sectors, i.e., world population dynamics sector, global food market dynamics sector, global energy market dynamics sector, scenario sector of world economic growth and oil price.

• 무역상무연구
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• 제39권
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• pp.345-366
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• 2008

The paper analyzes GMO legal system and the problems of its management in China and their suggestions to Korea. GMO has been arising as a principal alternative of grain while grain prices continue to climb. Although there has been concerns about GMO imported from China, it is true that we have not studied on China's legal system and the problems of its management in China. The paper believes that when Chinese government does not manage GMO primarily, we have a high possibility that China's GMO food will access to Korean market at any time, and threaten our health and safety. Hence, it is highly time to analyze how legally China treats GMO and what the problems of its management are. The paper found out problems of China's GMO management in three ways. Firstly, GMO legal system of China is confused and it has limitation of effectiveness. China has no regulations like "a law" to regulate GMO and regulations which exists now are not easy to apply in substance. Secondly, China has no administrative strictness to manage GMO. For example, the regulation which ministry of agriculture in China promulgated in March of 2002 started to use partially since 2003, 7. Thirdly, China, as a nation that administration superiors to, market does not do its roll to control GMO. It relates to the low concerns and care of Chines people about GMO. The paper shows suggestions and countermeasures according to problems of China's GMO management.

• 농업생명과학연구
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• 제46권3호
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• pp.59-68
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• 2012

본 연구는 인근에서 쉽게 구할 수 있는 낙과사과, 감껍질, 팽이버섯 부산물, 새송이버섯 부산물 및 맥주박을 이용하여 발효사료를 제조하였고, 이러한 농수부산물 발효사료가 양돈에 미치는 경제적인 효과를 분석하였다. 흑돼지 한 마리당 1일 사료비는 낙과사과 발효사료가 2.16~3.44%, 감껍질 발효사료가 3.83~13.35%, 팽이버섯 부산물 발효사료가 7.47~41.61% 감소하였다. 3원교잡종 한 마리당 1일 사료비는 새송이버섯 부산물 발효사료가 1.59~4.05%, 맥주박 발효사료가 59.09~66.90% 감소하였다. 흑돼지 한 마리당 도체가격은 2% 낙과사과 발효사료가 3.09% 증가하였고, 감껍질 발효사료가 1.20~3.40% 증가하였으며, 10% 팽이버섯 부산물 발효사료가 1.13% 증가하였다. 3원교잡종 한 마리당 도체가격은 새송이버섯 부산물 발효사료가 2.87~4.19% 증가하였고, 맥주박 발효사료가 41.31~49.14% 증가하였다. 따라서 본 연구에서는 사료비 및 도체가격의 분석을 통하여 농수부산물 발효사료는 사료비는 감소하고, 도체가격이 증가하게 되어 양돈 농가의 소득에 기여할 것으로 사료된다.

• Journal of Plant Biotechnology
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• 제40권4호
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• pp.185-191
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• 2013

Over the past decades, carbon dioxide concentration of the atmosphere of the world has increased significantly, and thereby the greenhouse effect has become a social issue. To solve this problem, new renewable energy sources including solar, hydrogen, geothermal, wind and bio-energy are suggested as alternatives. Among these new energy sources, bio-energy crops are widely introduced and under rapid progress. For example, corn and oilseed rape plants are used for the production of bio-ethanol and bio-diesel, respectively. However, grain prices has increased severely because of the use of corn for bio-ethanol production. Therefore, non-edible switchgrass draws attention as an alternative source for bio-ethanol production in USA. This review describes the shortage of fossil energy and an importance of switchgrass as a bio-energy crop. Also, some characteristics of its major cultivars are introduced including growth habit, total output of biomass yields. Furthermore, biotechnological approaches have been conducted to improve the productivity of switchgrass using tissue culture and genetic transformation.

• 한국관개배수논문집
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• 제19권1호
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• pp.50-63
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• 2012

Many reclaimed tideland projects in Korea have been conducted to secure the food self-sufficiency. In fact, the domestic food self-sufficiency has been greatly improved and reclaimed tideland projects contribute to Korea's economic and social development directly or indirectly replacing agricultural lands from urbanization, industrialization. As result, current self-sufficiency of rice reach the demand(104.6%) while rate of upland crops has less than 30% of self-sufficiency rate and corn, wheat, soybeans, etc. are virtually dependent on imports. Domestic price of crop is expected to be unstable by trend of international grain prices. Therefore, developing reclaimed tidelands as upland which is originally constructed for paddy fields could be a good option to become steady in domestic crop market and dedicate to ensure a stable food security. The study to prepare measures for dealing with disasters in reclaimed tidelands of west coast district is required in order to utilize those sites for infra construction of multi-utilization in those sites and The result of flooding analysis in this study can suggest policy direction for practical utilization of reclaimed tidelands in yellow sea area.

• 한국초지조사료학회지
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• 제28권2호
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• pp.129-138
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• 2008

Demand for alternatives to petroleum is increasing the production of biofuels from food crops such as corn, soybeans, sorghum and sugarcane, etc. At least for the next 5 years, ethanol demand will be increased greatly in the United States and in the world. Presently, most ethanol produced in the United States is corn (Zea mays) ethanol. As a result, especially in the Americas and Southeast Asia, agricultural land is diverted to biofuel production. Even though biofuel industry has many advantage including national security, economical, energetical and sustainable impacts, it is driving grain prices up and creating considerable concern about the potential negative impacts on a wide range of food products that depend on gain : chicken, pork, beef, and dairy products such as milk, cheese, yoghurt, cream and ice cream. Feedstock crops are crops such as switchgrass(Panicum virgatum, L.), corn stover and grasses that can be used in industrial processes such as fermentation into alcohol fuels. Feedstock is no compete with food. Furthermore it is friendly environmental bioenergy crops. In Korea, with increasing demand for fossil fuels the exploration of alternative sources of liquid fuel is inevitable. I suggest Korea need to research and to develop actively on feedstock for biofuel production through this review.

• 한국의류학회지
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• 제2권1호
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• pp.157-166
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• 1978

The purpose of this study was; (1) to examine ready-to-wear dresses to find the characteristics of labels and construction which existed at three different price levels and (2) to make the gathered information available to consumers, designers, manufacturers and the people who are concerned with ready-to-wear garments. A check sheet was made listing a wide variety of features which could cause garments to be different. For the statistical analysis. 87 dresses were used out of 116 dresses examined. Observation was made at the stores in Myung Dong, Suh-Dae Moon and No Ryang Jin in Seoul from February 16, 1978 to March 3, 1978. The findings are; 1. The average prices of high, medium and low priced levels were ${\\}54,728$, ${\\}41,448$ and ${\\}7,225$. The average price discrepancy between high and medium priced levels was ${\\}13,000$ and ${\\}34,194$ between medium and low priced levels. 2. Most of the dresses examined had labels in all three priced levels. The most informative labels were found on medium priced dresses and then high. The low priced dresses had no information which would be of help to the consumer in regard to care, size and Jiber content. 3. Most of the dresses examined were cut on lengthwise grain. The stitching of medium and high priced levels were satisfactory. The chief way of fastening threads at the end of stitching was by backtracking. $28\%$ of the low priced levels was found unappropriate in stitching number because it was too large to the fabric. Many dresses in low priced levels were not pressed well. The average hem width of low priced dresses were less than 3cm, the high 3-4cm and the medium 4-5cm. Hemming was done mostly by hand in high and medium and by machine in low priced dresses. The medium priced dresses used more linings than low and high priced dresses.