• 제목/요약/키워드: On-farm Research

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국내 팽이버섯 재배농가의 배지조성 및 수량 특성 (Yield characteristics and medium composition of winter mushroom in cultivation farms in Korea)

  • 이찬중;이은지;박혜성;임지훈;민경진;공원식
    • 한국버섯학회지
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    • 제18권1호
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    • pp.120-124
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    • 2020
  • 팽이버섯 재배를 하고 있는 농가의 배지조성을 조사한 결과 농가마다 사용하는 배지재료의 종류와 혼합비율도 차이가 있었다. 모든 농가가 콘코브, 미강, 비트펄프를 주재료로 사용하였고, 배지의 적정 pH 조절을 위하여 탄산칼슘과 폐화석을 1.0~3.8%을 사용하였으며, 건비지, 밀기울, 면실피, 파옥쇄 등은 농가마다 사용하는 정도가 달랐다. 농가별 혼합배지의 이화학성을 분석한 결과 질소함량은 1.28~1.52%였고, 탄소함량은 45.7~48.5%, C/N율은 30.7~37.9였다. 무기성분 함량은 혼합배지에 들어가는 무기물의 종류와 양에 따라 농가마다 큰 차이를 보였다. 균사 생장량은 배양 34일후 농가 2에서 6.5 cm로 가장 빨랐고, 농가 4에서는 5.7 cm였으며, 농가 1, 농가 3, 농가 5에서는 균사 생장량이 건의 비슷하였다. 균사 밀도는 처리 간에 뚜렷한 차이가 없이 높은 밀도를 보였다. 농가별 배지조성에 따른 수량성을 조사한 결과 농가2에서 173.4 g/bottle로 가장 높은 수량을 보였으며, 농가 1에서는 168.4 g/bottle이였고, 농가 3과 4는 거의 비슷한 수량을 보였다. 그러나 농가 5는 145.4 g/bottle로 가장 낮은 수량을 보였다. 이와 같이 농가별 배지조성에 따라 팽이버섯의 수량이 차이를 보였으며, 이러한 결과를 참고하여 팽이버섯 재배농가에 범용적으로 사용할 수 있는 배지조성의 선발이 가능할 것으로 판단된다.

현풍군 근대 농가(農家)의 건축적 변용에 관한 연구 (A Study on the Architectural Change of Traditional Farmhouse in Hyounpong Province)

  • 최지애;백영흠;박영혜
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2008년 추계학술발표대회 논문집
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    • pp.425-430
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    • 2008
  • Residential architecture was a lot more changed due to adopting modern residential type since 1960s. But people in farm houses are still living in a space of their past life causing a discrepancy. For this reason, the paper will identify the changed use for farm houses focusing on their plane views, and reason for the changed use as well. The result of this paper is expected to play a role for practical data to reasonably change and re-model farm houses located in back of cities such as Hyunpoong area. Targeted area for this paper, in order to survey change in residential environment due to industrialization and modernization, has narrowed down to 42 farm houses which are located Yuga-Myun, Hyunpoong-Gun, Dalsung-Gun where tradition and modern characteristics are harmonized being built before 1960s Researching relied on both documentary records and survey on the site, and survey on documentary records was performed in a way that preceding research for changed use of residential area was to be compared with people's farm houses in Kyeongsang-Do area, and survey on the site was carried out by photographing and land surveying and interview and analysis for them, and finally we acquired the result by analyzing use of interior for houses and plane view and relations between culture and social environment. From the result of this paper, there was a trend that farm houses had been improved function of a specific space by enlarging space and enlarged construction for inner rooms. And among spaces, kitchen and bath room was mostly enlarged its left side, and inner room had mostly enlarged its rear side, and kitchen was frequently enlarged in its side space. These kinds of variation in space is believed to be result of change of life style and house facilities

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농업정보화 현황과 발전방향 (Current Applications and Future Prospects of Information Technology in Agriculture)

  • 한원식;신재훈;정무남
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 1998년도 21세기 한반도 농업전망과 대책(한국작물학회.한국육종학회 공동주관 심포지움 회보)
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    • pp.353-367
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    • 1998
  • Information Technology(IT) in agriculture will contribute to the agricultural productivities and cultures in farm areas. On the basis of the information and knowledge infra structure, If projects and applications in agriculture have grown up rapidly in past few years, but still being requested more endeavors for each sections of agriculture. Specially, Internet and Information Super High-way Network Techniques will brings many changes in the area of agricultural research and dissemination. In this paper, the current status and future prospects of If in the agriculture field was referred to briefly.

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다공 원반 CFD 모델을 이용한 풍력발전기 후류 해석 연구 (Wind Turbine Wake Model by Porous Disk CFD Model)

  • 신형기;장문석;방형준;김수현
    • 풍력에너지저널
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    • 제4권1호
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    • pp.68-74
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    • 2013
  • Offshore wind farm is being increased since there are much trouble to develop onshore wind farm. But in the offshore, wind turbine wake does not dissipate less than onshore wind turbine because of low turbulence level. Thus this remained wake interacted to other wind turbine. This interaction reduces energy production in wind farm and have a bad influence on fatigue load of wind turbine. In this research, CFD model was constructed to analyze wake effect in offshore wind farm. A method that wind turbine rotor region was modelled in porous media was devised to reduce computation load and validated by comparison with Horns Rev measurement. Then wake interaction between two wind turbine was analyzed by devised porous model.

장기 모니터링을 통한 고랭지 밭 지역의 비점오염물질 유출특성 (Characteristics of Non-Point Pollutant Runoff in Highland Field Fields through Long-term Monitoring)

  • 이수인;신재영;신민환;주소희;서지연;박운지;이재영;최중대
    • 한국농공학회논문집
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    • 제59권4호
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    • pp.85-96
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    • 2017
  • In this research, I performed rainfall monitoring by selecting the spot which can represent high altitude cool farm region in recent 3 years, and tried to understand the characteristic of outflow of non-point pollutants coming from high altitude cool farm region. As a result, it was shown that reducing rainfall runoff in highland farm area can reduce non-point pollution load and should consider priority to reduce runoff through management resources when selecting abatement method. Additionally, it is judged that reduction method related to base run-off should be selected by performing research on material motion of TN.

농장차의 프레임 구조 해석 (The Analysis of Frame Structure in Farm Vehicle)

  • 프라타마 판두 산디;수페노 데스티아니;우지희;이은숙;박춘숙;윤우진;정성원;최원식
    • 한국산업융합학회 논문집
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    • 제20권1호
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    • pp.27-33
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    • 2017
  • An agriculture machines are subjected to different loads conditions. Due to this loads variations there will be certain deformations and stress which affect the performance of the electric vehicle in adverse manner. The purpose of this paper is to analyze the total deformation and stress of the electric farm vehicle middle frame based on the finite element method. The proposed electric farm vehicle has lifting and dumping capability. Therefore, in this research four operational condition such as normal condition, dumping condition, lifting condition, and lifting-dumping condition was analyzed. In this research, the design for whole frame structure is elaborated. According to the mechanical characteristics of the frame, materials are selected and manufacturability requirements are limited. Based on ANSYS 15 software, the finite element model of electric farm vehicle is established to carry out static analysis on full-loaded conditions. The simulation results shows that the proposed design meet the strength requirements and displacement requirements. The maximum deformation 0.53611 mm and maximum stress 30.163 MPa occurred at lifting-dumping condition.

DEER FARMING IN KOREA : ON-FARM SURVEY IN KYUNG-KEE AND CHUNG-BUK PROVINCES

  • Kwak, W.S.;Kim, K.H.;Kim, C.W.;Jeon, B.T.;Lee, S.M.
    • Asian-Australasian Journal of Animal Sciences
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    • 제7권3호
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    • pp.347-355
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    • 1994
  • Thirty farmers, representing three major deer counties in Kyung-Kee province and 50 farmers scattered in Chung-Buk province were interviewed to determine the current status of the Korean deer industry. Items surveyed were general information, farmed deer breeds. farm facilities, feeding and nutrition, hygiene and disorder incidence, velvetting, income sources, products and their sale, management problems and herd size control. The 888 deer farmed in Kyung-Kee province included spotted deer (Cervus nippon. 69.4%), red deer (Cervus elaphus, 6.1%), wapiti (Cervus elaphus canadensis, 12.2%), spotted $\times$ red deer hybrids (6.2%), red deer $\times$ wapiti hybrids (4.6%). and fallow deer (Dama dama, 1.5%). Poor information on feeding was evidenced by wide variation among farms of daily feed supply and ratios of forage to concentrate, and poor nutritional considerations according to physiological status of deer. Hygiene needed more attention. The incidence of diseases and disorders was high: enteritis (73.3% in Kyung-Kee province), fractures (60.0%), and dystocia (56.7%). The major source of farm income was velvet antler and its blood. To improve productive efficiency, attention should be given to improving farm facilities, simplified product marketing, developing standard feeding system, and economic grazing system.

울산달리농악의 연행 현황과 판제 (Current Status and Practices of 'Dali Village Farm Music')

  • 최흥기;최호곤;오현정
    • 공연문화연구
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    • 제39호
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    • pp.835-861
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    • 2019
  • 1960년대 울산은 한국 경제개발의 선도적 입지로 공업과 산업도시로 선정되었고, 이에 많은 노동인구가 유입되었다. 이러한 상황에서 사회 환경은 급격하게 변화를 가져오게 되었다. 특히 그 변화는 이 지역의 전통적 풍속에 많은 영향을 주었고, 이와 함께 전래된 무형문화는 사라지거나 소멸되었다. 이러한 급박한 상황에서 울산의 무형문화유산은 타 지역에 비해 긴급으로 보호해야 할 필요성을 가진다. 이 연구는 1930년대에 울산 달리지역에서 이루어진 마을농악을 분석하여, 이를 연행하기 위한 상황과 판제를 고찰하였다. 연구방법은 먼저 문헌연구로 조선시대 울산 최초의 사찬 읍지인 학성지(1749, 영조 25년)와 1936년 울산 달리마을의 농경과 이와 연계한 농악을 분석하였다. 둘째, 현장조사는 현재 울산남구문화원에서 울산달리농악을 복구하는 현황을 토대하였다. 연구의 성과는 급격하게 사라져가는 울산지역 농악의 현황과 판제를 고찰하고, 울산문화원에서 활동했던 농악 전승자인 고 '김달오'에게 계승한 김세주의 울산달리농악에 관한 연행을 밝혔다.

2011년 11월 고성만 굴(Crassostrea gigas) 양식장 수질환경 모니터링을 통한 이산화탄소 수지 평가 (Evaluation of Simple CO2 Budget with Environmental Monitoring at an Oyster Crassostrea gigas Farm in Goseong Bay, South Coast of Korea in November 2011)

  • 심정희;예미주;임재현;권정노
    • 한국수산과학회지
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    • 제47권6호
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    • pp.1026-1036
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    • 2014
  • Real-time monitoring for environmental factors (temperature, salinity, chlorophyll-a, etc.) and fugacity of carbon dioxide ($fCO_2$) was conducted at an oyster Crassostrea gigas farm in Goseong Bay, south coast of Korea during 2-4th of November, 2011. Surface temperature and salinity were ranged from $17.9-18.7^{\circ}C$ and 32.7-33.8, respectively, with daily and inter-daily variations due to tidal currents. Surface $fCO_2$ showed a range of $390-510{\mu}atm$ and was higher than air $CO_2$ during the study period. Surface temperature, salinity and $fCO_2$ are showed significant correlations with chl.-a and nutrients, respectively. It means when chl.-a value is high in surface water of the oyster farm, active biological production consume $CO_2$ and nutrients from environments and produce oxygen, suggesting a tight feedback between biological processes and environmental reaction. Thus, factors affecting the surface $fCO_2$ were evaluated using a simple mass balance. Temperature and biological productions by phytoplankton are the main factors for $CO_2$ drawdown from afternoon to early night, while biological respiration increases seawater $CO_2$ at night. Air-sea exchange fraction acts as a $CO_2$ decreasing gear during the study period and is much effective when the wind speed is higher than $2-3m\;s^{-1}$. Future studies about organic carbon and biological production/respiration are required for evaluating the roles of oyster farms on carbon sink and coastal carbon cycle.

시설 재배 농가 관리를 위한 데이터 서비스 기반의 비상 알림 스마트팜 서비스 모델 설계 (Design of Emergency Notification Smart Farm Service Model based on Data Service for Facility Cultivation Farms Management)

  • 방찬우;이병권
    • 미래기술융합논문지
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    • 1권1호
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    • pp.1-6
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    • 2022
  • 2015년부터 정부에서는 한국형 스마트팜 보급에 노력하고 있다. 그러나, 기술 및 현행 재배 연구 데이터의 한계로 인해 대규모 시설 채소 농가에만 보급이 국한되고 있는 실정이다. 또한, 작물 생육 및 재배 환경을 고려하지 않은 IT 기술의 단순 적용으로 도입 비용 대비 효율성과 신뢰성이 낮은 상황이다. 따라서, 본 논문에서는 공공 및 외부 데이터를 기반으로 데이터 분석 서비스를 수행하고 이를 시설 재배 농가의 실정에 맞는 데이터 기반의 타깃형 스마트팜 시스템을 설계하였다. 이를 위해, 농장 위험 정보 알림 서비스를 개발하고, 적정 비료 시비를 위한 광환경지도를 제공하며, 시설 농장의 온습도 정보를 활용한 재배 작기별 병해 예측 모델을 설계하였다. 이를 통해, 기존의 스마트팜 센서 데이터와의 연계, 활용으로 스마트팜 데이터 서비스 구현이 가능하며, 데이터 활용에 경제적 효율성 및 데이터 신뢰성을 확보할 수 있다.