• Journal of the Korean Statistical Society
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• v.7 no.1
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• pp.45-60
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• 1978

생산요소에 대한 수요탄력성은 생산요소 소득의 분배와 생산자의 생산의사 결정에 중요한 영향을 미치게 된다. 본 연구는 생산요소데 대한 수요탄력성을 결정하는 요인을 밝히고 실제 생산요소의 수요탄력성을 측정하여 이를 비교하는데 그 목적을 두고 있다. 이를 위해 규모에 대한 보수 체감의 정도를 달리하여 생산요소 간의 대체성, 생산함수의 기술조건, 생산물에 대한 수요탄력성 정도 및 다른 생산요소의 공급관계 등에 따라 생산요소의 수요탄력성이 어떻게 결정되는가를 이론적으로 분석하고 실제 자료를 이용하여 중요한 농업생산요소에 대한 수요함수를 측정하여 탄력성을 제시하였다. 생산요소에 대한 수요의 탄력성은 위에서 밝힌 이론적 근거 외에도 자료의 이용, 가능성 및 그 종류, 추정방법, 외생변수의 수와 종류 및 수요함수의 모형설정 등의 통계적 요인에 의해서도 결정될 것이다.

• Life and Agrochemicals
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• s.253
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• pp.42-43
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• 2009

지금 세계는 인구증가로 인한 시량부족이라는 커다란 위기단계에 직면해있다. 현재 70억, 2050년까지 90억 이상의 사람들에게 충분한 식량공급과 식품품질을 확보하는 것은 국제사회가 처한 매우 중대한 도전이다. 급격히 증가하는 식량 수요를 만족시키기 위한 대부분의 해결책들은 필수적으로 농산물의 생산량 증가에 기반하고 있지만, 이제는 지구 환경을 보호하는 지속농업을 유지하면서 세계 식량생산량의 25%에 해당되는 수확 후 손실을 최소화하는 방향으로 접근하는 것에 초점을 맞추어야 할 것이다. 저온저장은 수확 후 손실을 줄이는데 핵심적인 역할을 해오고 있다. 현재 방사선, 건조, 염장, 고압가공, 통조림 등 많은 수확후 보존기술들이 부패하기 쉬운 음식에 적용되고 있기는 하나, 이들 어떤 기술도 저온저장 기술처럼 소비자가 요구하는 생산물 저장수명 연장과동시에 초기의 물리적, 화학적, 영양학적, 감촉 특성을 유지시켜 주지는 않는다. 따라서 저온저장기술의 이용 증대만이 식품의 양과 질 측면에서 보다나은 전 세계인의 영양공급을 확보할 수 있게 할 것이다.

• Journal of agriculture & life science
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• v.50 no.5
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• pp.239-249
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• 2016

The direct sale of agricultural products is an alternative distributional channel which can provide satisfactions to both producers and consumers by reducing marketing cost through a direct connection between them. Due to this role, there has been rising interest in farmers' direct selling of agricultural products. However, the direct selling by farmers expose many problems and obstacles, because farmers should take a role as a middleman when they directly sell their products. This study tries to identify the obstacles from farmers who started the direct sales, and suggested a direction of e-business education programs being in place by RDA for the purpose of promoting farmers' direct sales. Suggestions of e-business education is needed to enhance education programs such as improving personal capability, cooperative work between farmers, expending programs what farms want.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2000.11a
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• pp.1-30
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• 2000

The higher stage of development of plant factory is discussed, that involves technologies such as process control for the plant growth environment, mechanization for material handling, system control for production and computer applications. Further, the advantages of a plant factory include production stabilization, higher production efficiency, and better quality management of products through a shortened growing period, better conditions, lower labor requirements, and easier application of industrial concepts. Finally, to realize the ultimate plant factory using both solar and artificial light, the intelligent approach from control engineering, physiological ecology and artificial intelligence(AI) may be inevitable and introduced based on some works done by authors.

• Korean Journal of Soil Science and Fertilizer
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• v.39 no.5
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• pp.321-327
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• 2006

In Korea, there is a growing competitive for water resources between industrial, domestic and agricultural consumer, and the environment as many other OECD countries. The demand on water use is also affecting aquatic ecosystems particularly where withdrawals are in excess of minimum environmental needs for rivers, lakes and wetland habits. OECD developed three indicators related to water use by the agriculture in above contexts : the first is a water use intensity indicator, which is expressed as the quantity or share of agricultural water use in total national water utilization; the second is a water stress indicator, which is expressed as the proportion of rivers (in length) subject to diversion or regulation for irrigation without reserving a minimum of limiting reference flow; and the third is a water use efficiency indicator designated as the technical and the economic efficiency. These indicators have different meanings in the aspect of water resource conservation and sustainable water use. So, it will be more significant that the indicators should reflect the intrinsic meanings of them. The problem is that the aspect of an overall water flow in the agro-ecosystem and recycling of water use not considered in the assessment of agricultural water use needed for calculation of these water use indicators. Namely, regional or meteorological characteristics and site-specific farming practices were not considered in the calculation of these indicators. In this paper, we tried to calculate water use indicators suggested in OECD and to modify some other indicators considering our situation because water use pattern and water cycling in Korea where paddy rice farming is dominant in the monsoon region are quite different from those of semi-arid regions. In the calculation of water use intensity, we excluded the amount of water restored through the ground from the total agricultural water use because a large amount of water supplied to the farm was discharged into the stream or the ground water. The resultant water use intensity was 22.9% in 2001. As for water stress indicator, Korea has not defined nor monitored reference levels of minimum flow rate for rivers subject to diversion of water for irrigation. So, we calculated the water stress indicator in a different way from OECD method. The water stress indicator was calculated using data on the degree of water storage in agricultural water reservoirs because 87% of water for irrigation was taken from the agricultural water reservoirs. Water use technical efficiency was calculated as the reverse of the ratio of irrigation water to a standard water requirement of the paddy rice. The efficiency in 2001 was better than in 1990 and 1998. As for the economic efficiency for water use, we think that there are a lot of things to be taken into considerations to make a useful indicator to reflect socio-economic values of agricultural products resulted from the water use. Conclusively, site-specific, regional or meteorogical characteristics as in Korea were not considered in the calculation of water use indicators by methods suggested in OECD(Volume 3, 2001). So, it is needed to develop a new indicators for the indicators to be more widely applicable in the world.

• Journal of the Korea Convergence Society
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• v.8 no.10
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• pp.371-383
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• 2017

This study investigated the perception of beauty-agriculture convergence industry for businesses in senary industries in Jeju Special Self-governing Province. Currently this area is in the stage right before the suggestion of a convergence-based win-win industrial development model. The ultimate goal is to provide basic data to beauty-agriculture convergence industries. Agricultural products are used as main ingredients in the cosmetics industry and recently, farmers have been focusing on certain areas of the beauty industry, such as the internal production of beauty products and the attraction of customers. According to a comparative analysis on the beauty-agriculture convergence industry between employees and non-employees, a statistically significant difference was found in the following: Possibility of creating high profits, personal interest in the beauty industry and the possibility of utilizing natural resources. In terms of the reasons for beauty-agriculture convergence industry development potential such as added value, leading industry, product competitiveness, aesthetic lifestyle and market size, as well, a significant difference was found. In the perception of the necessity of government supports such as financing, facilities, technology, education and PR marketing, no significant difference was observed. Since creative and diverse contents are needed for beauty-agriculture convergence, high-quality technical support and continuous education are essential. Therefore, diverse government supports including funds and facilities are needed.

• Journal of Korea Water Resources Association
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• v.42 no.11
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• pp.911-920
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• 2009

Virtual water is defined as the volume of water required to produce a commodity or service. The degree of food self-sufficiency is currently about 27 % in South Korea, so that Korea is one of the largest net virtual water import countries for agricultural product, thus it is necessary to estimate suitable virtual water for South Korea. The objective of this paper is to quantify the agricultural virtual water use (AWU) and virtual water content (VWC) using the method suggested by Chapagain and Hoekstra during the period 1991-2007. To calculate the virtual water content, 44 different crop production quantity and harvested area data were collected for 17 years and FAO Penman-Monteith equation was adapted for computing crop consumptive use of water. As the results, AWU has been estimated at 15.1 billion $m^3$ in average showing a tendency to decrease. Rice has the largest share in the AWU, consuming about 10.1 billion $m^3$/yr which is about 75 % of gross AWU, and the VWC is 1600.1 $m^3$/ton for paddy rice. The largest VWCs of crops are oilseed and tuber crop, and the smallest are leaf and root vegetables. The primary crop production VWC can be used for calculating the VWC of various secondary products using the contribution ratio, therefore the results of this study are expected to be used as basic data for national agricultural water footprint.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.119-119
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• 2017

부레옥잠은 대량 재배 및 수확이 가능한 수질정화용 식물로 생활하수, 축산폐수, 공장폐수 등의 수질정화 기능이 뛰어나고, 수확물은 건조 및 발효과정을 거쳐 가축 사료, 유기질 비료, 버섯 배지로 사용이 가능하고, 별도의 공업적 처리를 거치면 고부가가치의 바이오 연료, 연소용 연료로 사용이 가능한 친환경 농업 생산물로 본 연구에서는 부레옥잠의 고형연료 제조를 위한 수면에서 수확장치 개발을 위한 견인 특성을 파악하고 장치개발 가능성을 파악하고자 하였다. 부력구조물 부력, 부레옥잠 견인력, 부력을 측정하기 위한 실험 장치를 제작하여 부레옥잠 중량, 견인방식, 견인속도에 따른 견인력을 측정하였고, 경남 거제시에 위치한 저수지에서 실제 견인실험을 수행하였다. 실험결과 견인중량 및 견인 속도가 증가할수록 견인력은 증가하였으며 인력으로 부레옥잠을 견인하는 경우 부레옥잠 중량당 견인력은 약 $0.9{\sim}1.39kg_f$로 나타났으며 이는 향 후 부레옥잠 견인장치를 설계할 경우 부레옥잠 견인중량에 따른 견인력 산정 시 참고 자료로 매우 유용하게 활용 가능할 것으로 판단되었다. 저수지에서 견인실험 결과 견인속도 증가에 따른 유속저항으로 경운기에 의한 견인작업은 불가능하였으며 인력에 위한 견인 실험결과 부레옥잠 단위중량당 견인력은 견인바 3 m의 경우 1.5 ~ 2.6 N/kg, 견인바 6 m의 경우 2.1 ~ 5.4 N/kg로 비교적 크기로 나타났으나, 견인용 바에 따른 요인을 고려한 경우는 0.36 ~ 0.91 N/(kg-m)로 비교적 일정한 값을 보였다. 견인용 바 6 m, 무부하에서 인력과 경운기로 견인하는 경우 견인력은 39.24 N, 153.03 N으로 인력으로 견인하는 경우가 견인력이 작게 측정되었음. 이는 속도증가에 따라 물의 저항력이 증가함으로 나타난 결과로 부레옥잠 견인 시 견인속도는 0.36 m/s가 가장 적합한 것으로 판단되었다.

• Journal of Agricultural Extension & Community Development
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• v.19 no.4
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• pp.1041-1066
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• 2012

This article aims to analyse the change factor of the industry in rural area. As the regional economy is consist of variety industry in local Revitalization of Rural Economy should consider the growth factor of industry. Analytical method is Shift-Share analysis, analysis data is used GRDP of the 5 target area. Analysis is showed that Agriculture, forestry and fishing is leading position. but Farm population decreased rapidly underway. Side work farmer and industry population is increasing rapidly. the Regional Economic growth inhibitory of 5 Gun is the weakness of the internal factor. especially Competition component is than industry-Mixed component. and the Growth of Agriculture, forestry and fishing is external factor. To improve the regional economy, 5 Gun must improve the fault. and the growth of Agriculture, forestry and fishing should promote the consumption of local products to as the local food system.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.64 no.2
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• pp.109-126
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• 2019

Genetic resources of 84 species of Setaria italica BEAUVOIS, Sorghum bicolor, and Panicum miliaceum were collected to select the adaptable miscellaneous cereals in Saemangeum reclaimed land. The adaptability of Sorghum bicolor in reclaimed land was the highest among the three cereals cultivated on reclaimed land. The ratio of the average height of Sorghum bicolor plants cultivated in reclaimed land/normal field was 0.82, that of Panicum miliaceum was 0.61, and that of Setaria italica BEAUVOIS was 0.51. Three species of Sorghum bicolor, Satangdajuk, Kkamansusu, and Nampungcharl, were selected as potential genetic resources as they had excellent adaptability to reclaimed land. The yield of Satandaejuk on reclaimed land was 229.4 kg/10a, and the yield ratio of reclaimed land/normal field was 89.3%. The yield of Kkamansusu was 227.4 kg/10a, with reclaimed land/normal field ratio of 87.8%, and yield of Nampungcharl was 239.6 kg/10a, and reclaimed land/normal field ratio of 86%. In order to study the salt tolerance of selected genetic resources, we conducted salinity test. Salinity tolerance of Sorghum bicolor species-Satangdajuk, Kkamansusu, Nampungcharl was excellent compared to that of the other cereals. Among these, Satandaejuk had to highest salt tolerance level. Polyphenols, flavonoids, and detoxification of free radical were also studied. The anti-diabetic property of the cereals was also analyzed by ${\alpha}$-glucosidase inhibitory activity. We confirmed that the functionality of 3 lines in reclaimed land had improved in all the functional analysis categories when compared to that with yield in the normal field. Polyphenol, an antioxidant, increased in the range of 2~26% when cultivated in reclaimed land and the flavonoid content also increased from 8.5 to 55.6%. DPPH elimination capability, the ability to scavenge harmful reactive oxygen, also increased from 16.7 to 47% when cultivated in reclaimed land. The anti-diabetic activity and ${\alpha}$-glucosidase inhibition activity of selected Sorghum bicolor species-Satangdajuk, Kkamansusu, Nampungcharl also increased from 18.4 to 19.9% when cultivated on reclaimed land.