• 제목/요약/키워드: distribution of agricultural products

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CFD 시뮬레이션을 이용한 농산물 저온저장고내의 온도분포 균일화 연구 (Uniformity of Temperature in Cold Storage Using CFD Simulation)

  • 정훈;권진경;윤홍선;이원옥;김영근;이현동
    • 한국식품저장유통학회지
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    • 제17권1호
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    • pp.16-22
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    • 2010
  • 농산물 저온저장고 내부의 온도분포 균일화를 수치해석적으로 분석하기 위해 3차원 CFD 시뮬레이션을 수행하였다. CFD 시뮬레이션 모델은 속도벡터 및 온도분포 측정치와 비교를 통해 검증하였으며, 온도분포 균일화 향상을 위한 적정 팬용량 및 적재방법을 설정하기 위해 몇 가지 팬풍속 및 저장물과 벽체간의 거리 등에 대해 기류패턴과 온도 분포를 분석하였다. CFD 시뮬레이션의 검증에서 속도벡터 분포는 PIV시스템에 의한 측정치와 비교했을 때 표준 k-$\varepsilon$모델 예측치와 측정치의 상대적 오차는 24.5%로 나타났고, RSM 모델 예측치와 측정치의 상대적 오차는 16.7%로 나타나 RSM 난류모델의 예측 정밀도가 더 높은 것으로 나타났다. 온도분포 검증 결과 실측치와 측정치의 R. M. S. 값은 농산물 무적재 상태에서 $0.33^{\circ}C$, 농산물 적재 상태에서는 $0.28^{\circ}C$로 나타났으며 예측값과 측정값의 온도분포 경향은 잘 일치하는 것으로 나타났다. 검증된 시뮬레이션 모델을 이용하여 $6{\times}10$열 2단 팔레트에 농산물이 적재되고 냉각용 송풍팬이 2개인 저온저장고에 대해 송풍팬의 풍량 및 저장물과 벽체와의 간격 변화의 영향을 분석한 결과, 저장물과 벽체와의 거리는 300 mm 이상, 송풍량은 300 CMM 이상에서 저장고 내의 공기 온도차는 $1^{\circ}C$이내로 유지되며 팔레트 사이에 간격을 둔 경우 온도분포의 균일성이 향상되는 것으로 나타났다.

International Trends of Good Agricultural Practice(GAP)

  • Lee, Ju-Young;Park, Jin-Han
    • Journal of Evidence-Based Herbal Medicine
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    • 제1권1호
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    • pp.19-28
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    • 2008
  • Consumers have been requiring more higher level of food and agricultural products safety. The system of Good Agricultural Practice(GAP) has been spreaded over the world. Korea also introduced the GAP system in agricultural industry. GAP is related to the production side in the whole traceability system. The establishment of GAP system is a prerequisite to secure food safety. This study reviewed the concept of GAP and necessities and backgrounds of introducing the GAP system. Also, this study analyzed the problems which have been appeared in the GAP program and proposed the policy strategies and directions for the Korean GAP system. So issues for the GAP system are as follows; computerizing of traceability system, forming the cooperative works among the related governmental departments, establishing a certification system to relate with crop features, efficient management, ensuring distribution channel and the research for estimating GAP consumer surplus is need to analyze GAP program more efficient. In addition, It is necessary to keep the records of the data to analyze the GAP program more accurately.

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Prediction of Air Movement and Temperature Distribution at Different Store Methods Using 3-D CFD Simulation in Forced-Air Cooling Facility

  • Yang, G.M.;Koh, H.K.
    • Agricultural and Biosystems Engineering
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    • 제3권2호
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    • pp.65-72
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    • 2002
  • Temperature is the most influential environment parameter which affects the quality change of agricultural products in cold storage. Therefore, it is essential to keep the uniform temperature distribution in the storage room. This study was performed to analyze the air movement and temperature distribution in the forced recirculating cold storage facility and to simulate optimum storage method of green groceries using 3-D CFD(three dimensional computational fluid dynamics) computer simulation which applied the standard $textsc{k}$-$\varepsilon$ turbulence model and FVM(finite volume method). The simulation was validated by the experimental results for onion storage and the simulation model was used to simulate the temperature and velocity distribution in the storage room with reference to the change of storage method such as location of storage, no stores, bulk storage, and pallet storage. In case of no stores, internal airflow was circulated without stagnation and consequently air movement and temperature distribution were uniform. In case of bulk storage, air movement was stagnated so much and temperature distribution of onion was not uniform. Furthermore, the inner temperature of onion roses more than the initial temperature of storage. In case of pallet storage, air movement and temperature distribution of onion were so uniform that the danger of quality change was decreased.

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원주지역에서의 유기농업 활동과 협동조합 역할과의 관계 연구 - Delphi Technique을 활용한 인식조사 - (A Study on the Relationship between Organic Agriculture Activity and Cooperatives Role in Wonju - Utilizing Delphi Technique -)

  • 최덕천
    • 한국유기농업학회지
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    • 제23권3호
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    • pp.423-453
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    • 2015
  • This study started with two questions. The first question is 'Why does organic agriculture want to be linked with cooperative?' The second is 'What is the characteristics of the mutual relationship between organic agriculture and cooperative?', especially in Wonju. Up to now, there have been various kinds of discussion about cooperation between organic agricultural campaign and cooperative in Wonju. But there are few concrete data showing what role cooperative plays in the cyclical process of production-distribution-consumption of organic agriculture. Thus, we conducted a survey applying the Delphi technique to the 35 organic agricultural specialists active in Wonju. First, small-scale family farm producers established a social economic cooperative network in around 2003 to perform 'the activities of innovators' through forming an organization. Producers moved from the stage in which they were supported one-sidedly by consumers to the stage where they could 'lead' cooperation. Each farm organization built a vertical integration, and horizontal cooperative systems with other farm organizations. But, practical cooperative activities have remained in the doldrums. They tend to show trends deviating from the principles of organic agriculture and cooperative. Second, the relationship between producers and consumers in Wonju can be described as 'producer-consumer cooperative type'. In Wonju, the producers' organization is not a sub-contractor which simply deliver organic agricultural products to producers' cooperative, but is an equal subject which creates its own value chain. The cooperative (cooperative organization) leads distribution and consumption of organic agricultural products and mutual communication. But, the closeness between producers and consumers has got loosened. And, it is problematic that the proportion of local food consumption in Wonju is very low. There is a very strong tendency to ride the central distribution system of producers' cooperative coalition. Consequently, it is necessary for producers' cooperatives in Wonju to run a local food distribution system based on the 'cooperative system among cooperatives'.

A Review of the Applications of Spectroscopy for the Detection of Microbial Contaminations and Defects in Agro Foods

  • Kandpal, Lalit Mohan;Cho, Byoung-Kwan
    • Journal of Biosystems Engineering
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    • 제39권3호
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    • pp.215-226
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    • 2014
  • Recently, spectroscopy has emerged as a potential tool for quality evaluation of numerous food and agricultural products because it provides information regarding both spectral distribution and image features of the sample (i.e., hyperspectral imaging). Spectroscopic techniques reveal hidden information regarding the sample and do so in a non-destructive manner. This review describes the various approaches of spectroscopic modalities, especially hyperspectroscopy and vibrational spectroscopies (i.e., Raman spectroscopy and Fourier transform near infrared spectroscopy) combined with chemometrics for the non-destructive assessment of contaminations and defects in agro-food products.

대형유통업체 구매담당자의 농산물 구매 행태에 관한 연구 (How do Merchandisers in Large Retailers Purchase Agriculture Products?)

  • 우영문
    • 한국유통학회지:유통연구
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    • 제16권5호
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    • pp.123-140
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    • 2011
  • 본 연구에서는 7개 대형유통업체 신선식품(농산, 수산, 축산, 가공식품) 구매담당자(Merchandiser, MD)를 대상으로 구매 행태를 분석하였다. 특히 대형유통업체의 산지 공급업체와의 거래 특성과 산지 직구입 특성을 중점적으로 분석하였다. 대형유통업체 구매담당자 설문조사 결과, 산지 공급업체 선정시 안정적인 물량 공급, 품질관리, 적극적인 경영마인드, 저렴한 가격, 차별화 상품 제안 순으로 중요하게 보았다. 산지 직구입과 관련하여 직구입 거래대상에 대한 선호도가 기존의 주요 거래대상인 벤더업체와 도매시장보다 높았고, 직구입 거래대상 중에는 영농조합 법인(농업번인 포함)을 가장 선호하고, 그 다음이 농협중앙회, 단위농협순이다. 공급 업체와의 거래에서 대형유통업체 구매담당자는 2년 이상 장기간 거래를 선호하고, 계약가격 결정시에는 시장시세(50.9%), 생산원가(31.2%) 및 동업계 판매가(18.0%)를 활용하였다. 산지 유통조직이 소비지 유통환경의 변화에 적극적으로 대응하기 위해서는 농산물 생산의 조직화, 규모화 및 유통 채널의 전문화 전략이 필요하다. 공급 시스템의 지속성과 안정성이 요구되어 생산조직 간 연계를 통한 연중 공급 가능한 대응 체계 구축 역시 중요하다. 또한 시장 교섭력 강화를 위한 노력으로 소비지 다양한 시장 정보 수집도 놓치지 말아야 할 것이다.

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수산물도매시장에 있어서 시장도매인 제도 도입의 평가 (Evaluation of the Wholesalers System in the Fishery Products Wholesale Market)

  • 송정헌;강종호
    • 수산경영론집
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    • 제53권4호
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    • pp.1-13
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    • 2022
  • The introduction of the wholesalers system is being considered from various aspects in order to improve the problems of the listed auction system of wholesale corporations. The wholesalers system is a corporation that receives designation from the creator and purchases or consigns agricultural and fishery products to wholesale or broker sales, and has the advantage of reducing the distribution stage and distribution costs. The purpose of this study is to evaluate the wholesalers system introduced to improve the problems of the listed auction system of wholesale corporations through a case study of market wholesalers handling fishery products.

Effect of Agricultural Exports and Imports on Economic Growth in Bangladesh: A Study on Agribusiness Supply Chain

  • HASAN, Mostofa Mahmud;HOSSAIN, BM Sajjad;SAYEM, Md. Abu;AFSAR, Mahnaz
    • 유통과학연구
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    • 제20권11호
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    • pp.79-88
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    • 2022
  • Purpose: The purpose of this study was to determine the effect of agricultural exports and imports on economic growth in Bangladesh and propose an upgraded and customized model of the supply chain for agribusiness growth in Bangladesh to achieve plain sailing and systematic operation and financial gains at home and abroad. Research design, data, and methodology: All data in the research have been collected from secondary sources. Gross domestic product was used as the dependent variable and exports and imports of agricultural products were used as independent variables. Pairwise Granger causality was utilized to see the impact of the variable responsible for the economic growth in Bangladesh and the causal relationship between the variables analyzed was measured using Johansen co-integration test. Results: From the empirical analysis, the researchers observed that agricultural commodity imports and exports have a unidirectional impact on economic growth in Bangladesh and a long-run causal link with economic growth in Bangladesh. The suggested supply chain model of agribusiness aids in achieving smooth operations, systematic management, and monetary gains both domestically and internationally. Conclusions: This paper contributes to the development of a more effective and profitable agribusiness supply chain in Bangladesh systematically through their theoretical and practical implications.

농산물 종합물류센터조성을 위한 입지선정 평가요인 분석 (A Study on general logistic center of agriculture products for location selection model)

  • 김규창
    • 한국유통학회지:유통연구
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    • 제3권1호
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    • pp.145-158
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    • 1998
  • The selection of proposed sites for the general logistic center of agriculture products would be made the most suitable place by considering the spread of population as real consumers, the prospect of the demand, the expansion of traffic system, the regional, hourly and carring traffic volume and the use of land based urban planning, etc. As the preconsideration, the possible occupant companies have to be selected on the category of business and the district. After posing questions and having interview, several selected regions would be compared and analysed for deciding the most suitable place. The model for the general logistic center of agricultural products must be selected taking key factors approach for choosing key factors at first and referring to many documentary records. And the more, cooperating with the specialists for location selection and making objective questions to concerned companies, the most suitable place is selected by marking high score for the moderate land cost, the low traffic jam, the connection with the back cities and the possible expansion as the general logistic center of agriculture products.

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