• 한국전자통신학회논문지
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• 제15권5호
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• pp.959-966
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• 2020

수산업의 중요성이 커지고 양식 산업이 급성장한 가운데 수산 양식 분야 ICT 융합을 통한 스마트 양식장에 대한 연구가 진행되고 있다. 양식장 현장에서 생육 환경 모니터링이 가능하도록 수중 드론의 구동부, 영상 수집 장치, 자세 안정화를 위한 통합 컨트롤러, 실시간 수중 영상을 통한 드론 조정 및 제어가 가능한 원격 관제 장치를 제안하고 설계, 개발 및 시험을 진행하였다. 수중 드론 활용을 통해 양식 산업에서 문제 되는 인력 수급 및 고비용 작업을 대체 할 수 있으며, 양식 폐사 확률을 줄여 안정적인 양식장 관리가 가능하다.

• 한국초지조사료학회지
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• 제40권4호
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• pp.251-258
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• 2020

본 연구에서는 농촌진흥청 국립축산과학원에서 개발된 품종 중 추위에 강한 내한성을 가진 품종 중 조생종으로는 '코윈어리', 극조생종은 '그린콜' 을 공시 시료로 하여 강원지역의 기상과 이탈리안 라이그라스의 두 품종(코윈어리, 그린콜)의 생육 간 상관관계를 보고, 지역별로 이탈리안 라이그라스 두 품종의 재배 가능성을 보고자 하였다. 지역별 월동 전 이탈리안 라이그라스의 생육에서는 춘천지역이 출현율과 분얼경, 지하부의 생육이 가장 좋고, 초장의 경우 다른 지역의 중간 정도이며, 원주 지역은 출현율이 춘천보다 낮았으나, 초장의 생육이 춘천, 강릉지역보다 좋았다. 강릉지역은 태풍으로 원주와 춘천지역보다 월동전 생육과 출현율이 많이 저조하였다. 하지만 수확기인 5월에는 초장의 길이가 강릉, 춘천, 원주 순으로 강릉이 특히 매우 높게 나타났고, 수확기의 초장은 최저기온 및 평균 기온과 밀접한 상관관계를 보였다. 이러한 결과는 월동 중 및 월동 후 이후 생육기에 변화하는 기상 조건 중 최저기온과 적산온도가 이탈리안 라이그라스의 생육에 영향을 주고 있음을 제시한다. 지역별 코윈어리의 건물수량은 강릉이 7,490 kg/ha로 춘천, 원주보다 많았다. 그린콜의 경우에도 강릉의 건물수량이 6,490 kg/ha로 춘천, 원주보다 많았다. 재배 적지인 강릉을 기준으로 이탈리안 라이그라스 상대 건물수량 지수는 춘천이 77~78%, 원주가 71~84%을 보여 춘천 지역에서 IRG 재배가 가능지역으로 평가되지만, 최적 재배 지역은 아니고 재배 불안전 지대로 판단된다. 따라서 중북부 지역인 강원도 경우 IRG 재배에 미치는 환경 요인이 이탈리안 라이그라스 생육과 수량에 주요한 영향을 주고 있음을 제시한다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.482-486
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• 2005

Total forest growing stock and growing stock per ha in Korea are $470\times10^6m^3\;and\;73m^3$, respectively. Those figures mean that forest growing stock was increased 4.7 times more during last 30 years. The annual production of forest biomass comes from forest tending executed by Korea Forest Service was estimated about $1.07\times10^6m^3$ M/T, which was equivalent to $0.45\%$ of total imported crude oil of Korea at 2002. The production is expected to increase and reach up to $1.9\times10^6 M/T$ till 2008. The analysis of economic feasibility showed that the production cost of wood chip(134,786Won/T) was about 30,389 Won/T higher than heat value of wood chip, 104,397 Won/T estimated from that of kerosene. For the promotion of forest bioenergy utilization, more efforts need to be given for the education and public relations to induce publicity a willingness-to-pay for the environment friendly fuels under the good understanding for the use of bioenergy. In addition, we need to provide a community-based biomass utilization program by region to allocate the role of each participant and to increase the profitability of bioenergy.

• 무역상무연구
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• 제16권
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• pp.117-154
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• 2001

The objective of the study is to propose to the strategy to make korean main ports to international logistics center in Northeast Asia. so this study's construction is constructed four steps. First, analysis the environment of economy, business and logistics industry in Northeast Asia. Second, analysis the constructions and characters of Free Zone Act. Third, analysis of Korean Government's policy about Free Zone. Forth, propose the growing strategy of Free Zone. In 1999 Northeast Asia was adopted in Korea, which will facilitate the process and strengthen the international logistics capability as a international logistics hub in Northeast Asia. But only adoption in the point of law is not enough to growing korean main seaport and airport to a international logistics hub. so various strategies are needed. In this study, we propose the growing strategies that are to establish and manage the free zone of ports and its hinterland are: the establishment of a long-term vision of international logistics complexes, the improvement of the proximity to markets/customers by way of linkage of global networks, the activation of the industrial complex in hinterland, the development of the skilled labor and the labor climate, the cooperation between governmental bodies and government/provincial bodies, continuous development of logistics infrastructure and so on.

• Journal of Ginseng Research
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• 제15권1호
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• pp.36-40
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• 1991

A field experiment was conducted to examine the growth of one and two year old American ginseng (Panax guinguefolium L.) in the arid interior of British Columbia, Canada. For both years of plants, early season growth was characterized by rapid stem and leaf dry matter production. Root growth commenced in early June and continued until early September. One year old roots had a dry weight of 0.1 to 0.2g at the end of the growing season. The two years old roots commenced the growing season at 0.Is and increased in dry matter by a factor of ten-fold. Dry to fresh weight ratios for both years were similar for root, leaf and stem samples at the end of the growing season. Leaf area index for both years showed similarities in progression over the growing season. As a consequence of the effectiveness of the microclimate modification employed to permit American ginseng cultivation (elevated shade cloth and surface mulch), plant growth and development was extremely good. This indicates the potential for the cultivation of American ginseng in dryland environments.

• World Technopolis Review
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• 제3권3호
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• pp.122-138
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• 2014

The number of environment-related technologies has increased remarkably over the past two decades, as has the public's interest in effective resource use and ways to reduce the effects of global warming. Industries that are based on environment-related technologies are thus growing rapidly. Previous studies revealed that externalities derived from the population concentration in urban areas positively affect agglomerations of high-tech industries. Such externalities have been named the "knowledge spillover effect". The purposes of the present paper are to (1) give a thumbnail sketch of the locations of environment-related industries around the world, using the Organisation for Economic Co-operation and Development environment-related patent statistics, and (2) explicate the effects of the Marshall-Arrow-Romer (MAR) and Jacobs externalities, which result from population concentrations in urban areas, on the agglomeration of environment-related industries in Sweden. The analysis revealed that environment-related industries are located chiefly in urban areas across the globe, and that only the MAR externalities influenced positively on the agglomeration of these industries in Sweden.

• 한국융합학회논문지
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• 제8권9호
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• pp.339-345
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• 2017

최근 지구 온난화와 이상기후로 농업 환경이 크게 변화되고 있다. 특히, 농작물의 생육환경이 변화됨에 따라서 새로운 농업기술의 개발이 필요한 실정이다. 따라서 최근 ICT 기술의 발전으로 농업 환경을 통제하고 효율성을 높이기 위한 '스마트 팜' 조성 기술이 도입되고 있다. 하지만 아직까지 스마트 팜 관리 환경에 영향을 미치는 다양한 인자와 관리 차원에서 체계적이고 객관적인 평가항목이 부재한 실정이다. 본 연구에서는 AHP 기법을 활용하여 스마트 팜을 구성하고 있는 요인들 간의 상대적 중요도를 도출하였다. 그 결과 스마트 팜의 종합적인 운영과 관리를 평가하기 위해서 센서 장비(55.6%)와 제어 및 정보 관리 시스템(44.4%) 등 2가지 평가 분야가 최상위 평가항목으로 선정되었다. 이러한 결과는 스마트 팜 적용 시 농작물의 생육 환경 정보의 파악과 생육 환경을 통제할 수 있는 시스템이 무엇보다 중요하다는 것을 의미한다. 본 연구의 결과는 향후 스마트 팜 기술 도입에 따른 평가 지표 마련에 기초 자료로 활용 가능할 것으로 판단된다.

• 농업과학연구
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• 제48권4호
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• pp.975-985
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• 2021

The sufficient amount of protein supply is crucial for improving the growth performance of growing beef cattle. In addition, due to the improvement in the genetic potential of the carcass weight of Hanwoo steers, dietary protein requirements may be increased during the rapid growth period. Accordingly, the dietary crude protein (CP) level in growing Hanwoo steers has been increasing in the field. However, little scientific evidence is available in relation to this. Therefore, this study was conducted to test whether a higher dietary CP level than convention would improve the growth performance and body metabolism in growing Hanwoo steers. Fifty growing Hanwoo steers were randomly divided into two groups and fed either a commercial diet (CON) or a higher CP (HCP) concentrate mix, provided with a similar level of dietary energy. Tall fescue hay was provided ad libitum. The dietary CP level did not affect growth performance and blood metabolite. Nitrogen intake, predicted nitrogen excretion, and retained nitrogen were higher in the HCP group than in the CON group (p < 0.01). Although there was no difference in the nitrogen utilization efficiency, the growth efficiency per retained nitrogen decreased in the HCP group (p = 0.02). A higher dietary CP level may increase nitrogen retention in growing Hanwoo steers without improving growth performance, which leads to reduced growth efficiency per retained nitrogen. Furthermore, considering the high price of feed protein and increased nitrogen excretion to the environment, a further increase in the protein level may not be sustainable.

• 생물환경조절학회지
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• 제13권1호
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• pp.61-66
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• 2004

활성탄 혼합비율을 달리하여 육모상토의 이화학성 변화 및 참외묘의 생육에 미치는 효과를 검토하였다. 활성탄의 혼합비율이 많을수록 상토내의 pH는 높아졌으며 육묘기일이 경과될수록 초기에 비해 높아지는 경향으로 활성탄을 20% 혼합한 상토에서의 pH는 5.2${\sim}$5.8로 참외생육에 적합한 pH가 유지되었다. 무기성분 또한 활성탄의 혼합비율에 의하여 성분에 차이가 있었으며 육모기간이 경과함에 따라 낮아지는 경향으로 Ca는 5.4${\sim}$6.5$cmol^+\;{\cdot}\;kg^{-1}$ Mg는 7.6${\sim}$12.3$cmol^+\;{\cdot}\;kg^{-1}$, K는 37.8${\sim}$55.3$cmol^+\;{\cdot}\;kg^{-1}$이었다. 참외묘의 생육 또한 활성탄의 혼합비율에 의하여 차이를 보였는데, 활성탄을 20% 혼합한 상토의 참외묘는 엽장, 엽폭, 초장, 엽면적에서 생육이 좋았다. 상토에 활성탄을 혼합하는 비율에 따라 용적밀도, 수분보유력, pH, 무기성분 등의 함량에 변화가 있었으며, 생육에도 차이가 있었다.

• 한국수산과학회지
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• 제42권5호
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• pp.442-448
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• 2009

Bacteriological examination of a 12,700 ha area within Jaranman Saryangdo area, located in Jaran bay and Saryangdo island, was conducted with 35 fixed (designated areas and adjacent areas) seawater sampling stations between January 2006 and December 2008. According to results, the geometric mean range and the estimated 90th percentile range of fecal coliform counts in sea water samples collected in the designated area were <1.8-2.4 and <1.8-8.6 MPN/100mL, respectively. The estimated 90th percentile range of fecal coliform counts in sea water samples collected from 6 sampling stations in the adjacent areas were 6.1-34.6 MPN/100mL. Based on these results, bacteriological water quality of the designated areas in the Jaranman. Saryangdo area meet the NSSP (National Shellfish Sanitation Program) guidelines for approved area. The bacteriological sea water quality in Jaranman.Saryangdo area has been shown to be favorable at all investigated sampling stations except for July and August which coincided with heavy rainfall. In fact, the bacteriological water quality was not affected if rainfall was less than 30 mm rainfall. However, the degree of bacteriological contamination increased rapidly and the water quality exceeded approved NSSP guidelines set for rainfall above 60 mm.