• 수산경영론집
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• 제46권3호
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• pp.129-141
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• 2015

Because land based aquaculture is restricted by high investment per rearing volume and control cost, good management planning is important in Land-based aquaculture system case. In this paper master production planning was made to decide the number of rearing, production schedule and efficient allocation of water resources considering biological and economic condition. The purpose of this article is to build the mathematical decision making model that finds the value of decision variable to maximize profit under the constraints. Stocking and harvesting decisions that are made by master production planning are affected by the price system, feed cost, labour cost, power cost and investment cost. To solve the proposed mathematical model, heuristic search algorithm is proposed. The model Input variables are (1) the fish price (2) the fish growth rate (3) critical standing corp (4) labour cost (5) power cost (6) feed coefficient (7) fixed cost. The model outputs are (1) number of rearing fish (2) sales price (3) efficient allocation of water pool.

• 스마트미디어저널
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• 제8권3호
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• pp.88-94
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• 2019

가축 질병 발생시 신속하게 대처를 하지 못할 경우 그 피해가 막대하기 때문에 가축 질병은 축산업에서 매우 중요한 이슈이다. 가축 질병 발생으로 인한 문제를 해결하기 위해서는 가축 질병상태를 조기에 진단하고 체계적이며 과학적인 가축 사양기술의 개발이 필요하지만 국내에는 이러한 기술에 대한 연구가 미흡한 실정이다. 본 논문에서는 클라우드 컴퓨팅을 활용한 가축 질병 예찰 및 축사 통합 관제 시스템을 제안하고자 한다. 제안하는 시스템은 WSN과 어플리케이션을 통해 수집된 가축 및 축사관련 정보들을 데이터를 컬럼 지향 데이터베이스인 하둡 HBase를 이용하여 저장하고 관리하며, 맵리듀스 모델을 통한 병렬처리를 통해 가축 질병 예찰 및 축사 통합 관제 서비스를 제공한다. 또한 REST 기반의 웹서비스 제공을 통해 사용자는 PC, 모바일 기기 등 다양한 플랫폼으로 서비스를 제공받을 수 있다.

• 한국지역지리학회지
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• 제6권3호
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• pp.37-52
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• 2000

대도시내의 농업경영이 시장접근성의 측면에서 볼 때 유리한 것은 사실이다. 그러나 농업은 필연적으로 생물학적 과정에 의존하는 산업이므로 농업경영에서 자연적 조건은 여전히 중요하다. 사례연구를 통해 대도시내 영농조건이 불리한 지역의 농업경영 특성을 고찰한 본 연구에서 경제적 측면의 농업경영과 관련해서는 토지의 자연적 제약이 중요한 요인이지만 주민의 생활측면에서는 기반시설의 부족이 더 큰 제약 요인으로 작용됨을 확인하였다. 농업노동력은 양적으로 부족하고 질적으로 낮은 수준이며, 부족한 농업노동력을 보완하는 위탁영농은 결과적으로 개별농가의 영농수익을 악화시키는 요인이 되고 있다. 경영규모와 형태는 경영주의 연령에 의해 크게 영향 받으며, 토지이용은 자연적 조건에 따라 결정되는데 특히 일사량 및 수리시설과의 접근성이 중요하게 작용된다. 기반시설의 부족에 따른 생활상의 불편함과 열악한 영농조건 및 낮은 영농수익성에도 불구하고 자급적 생계유지 목적의 영농과 촌락공동체는 유지될 가능성이 높다. 그러나 불리한 자연적 조건은 영농의 상업화를 제약하여 영농목적의 이주를 제한하고 농가경제의 영세성과 악순환을 되풀이한다 그러므로 정책적인 지원과 재배작물의 보급이 없는 한 자연적 조건이 불리한 농업지역은 대도시내에 위치하더라도 한계가 있다.

• 디지털산업정보학회논문지
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• 제13권4호
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• pp.25-31
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• 2017

In this paper, we propose a study on DB-based automatic crop cultivation that obtains crop cultivation data using IOT and automatically controls the cultivation environment using it. A system for DB-based automatic crop cultivation that automatically controls the cultivation environment is composed of a management server and a local controller. The management server was implemented using the MySQL DB in the Linux server system, and the local controller was designed and manufactured using the WiFi module and ARM Coretax-3 series MCU and confirmed its operation in the laboratory. The purpose of this study is to provide the optimal cultivation data and to grasp the cultivation status in real time when the knowledge of professional cultivation is needed like the farmers of ear farm villages. Research should continue to enable the cultivation of crops to reflect the requirements of each user.

• 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.

• 농업과학연구
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• 제18권2호
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• pp.127-139
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• 1991

1. The purpose of this study was to recommend ways of more efficient pheasant farm business management and promoting the demand of pheasant foods by reviewing the current pheasant farm business management and the general pattern of consumption of pheasant foods. The study was conducted on the basis of the field survey covering 83 pheasant feeders and 283 consumers. 2. Majority of pheasant feeders, 86.8%(n=72), utilized broiler feed for pheasant rearing because of high price of exclusive pheasant feed. 3. In case of producing 1,000 heads of 5 month-old pheasant, the primary production cost per head was roughly calculated at about 5,530 Won. And 40.3% of primary production cost was consisted of feed cost and 12.9% was depreciation cost for facillities including artificial incubator equipments. 4. 81.1%(n=51) of whole surveyed feeders disposed of 1-4 week-old birds directly to the new feeders and 6%(n=6) sold them to the middlemen who were almost pioneering pheasant feeders. 5. 48.9%(n=138) of the surveyed consumer respondents have taken the pheasant foods once and several times, and the others never once. And 50.6%(n=69) of the respondents who had taken the pheasant foods were satisfied with the tastes. 6. The surveyed consumers were asked whether they knew the nutritional value of pheasant foods and 47.3(n=136) recognized it positively and 37.5%(n=106) negatively. 7. To increase the pheasant farm income and promote the demand of pheasant foods. followings are recommended. - Production cost should be reduced by cooperative utilization of facilities and equipments at farm level, and exclusive pheasant feed of good quility should be developed and supplied to the feeders at a low price. - Pheasant marketing and pricing system should be improved to prevent consumers from price disorder of retail shop including pheasant food reataurants and to popularize the pheasant foods. - Various type of menu of pheasant foods should be developed not only to satisfy consumers in tastes but also to solve the seasonality of pheasant supply. But it is preferable that this action is led by pheasant feeders and their cooperative organization, espectially through vertical intergration system owned by pheasant feeders. - Generic, pioneering advertisement and promotion should be carried out to promote primary demend of pheasant foods. It would be preferable that these primary demend advertising and promoting activities shuld be sponsored by pheasant feeders and government together. And their activities should be supported by institutional regulation.

• 한국농공학회지
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• 제35권2호
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• pp.65-72
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• 1993

When a drought occurs in an area irrigated by multi-reservoirs, onerating a single reservoir separately to control the reservoir' storage is not a desirable solution. In order to reduce damages effectively for the areal drought, the storage of the reservoirs within the areal boundary should be managed as a group. Storage management procedures are as follows : 1. Collecting and checking the present storages of all reservoirs 2. Computing the drought frequency and depth; and finally, establishing a suitable storage saving strategy based on the estimated drought depth. For the purpose of this storage management, the RESTOMS(Reservoirs Storage Management System) was developed and the system was composed of the PRIME computer and the ORACLE as a distributed database management system, which was the host computer of Rural Development Corporation and would be on-lined with the regional offices throughout the country. Reservoirs operated by Farm Land Improvment Association were comprised in the DB system. Using the RESTOMS, the drought frequencies and drought depths were calculated with respect to the reservoir storage records(1967 to 1992). It was obvious that the results were closely corresponding to the real drought records.

• 농업과학연구
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• 제20권2호
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• pp.211-220
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• 1993

Sustainable agriculture is a management system for ecological equilibrium and long-run productivity. Conversions from conventional to sustainable farming systems could have good effects on future generations' productivity and agricultural market opening in Korea. However, farmers are not willing to adopt sustainable farming system as because of farm income reductions, so government programs may be needed. Government programs should have research support for cost reductions, direct support for advocational livestock breedings and income security, and relative price changes for reducing agricultural chemicals.

• 컴퓨터교육학회논문지
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• 제20권6호
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• pp.95-104
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• 2017

교육기관 및 대학에서 사이버침해에 의하여 정보가 유출, 위조, 변조, 삭제 등 훼손되었을 때의 피해는 매우 크다. 본 연구에서 교육 관련 행정기관과 대학을 대상으로 사이버침해의 유형, 원인 및 문제점 등을 분석한 결과 관리적, 물리적, 기술적 정보보호 활동이 취약했다. 따라서 본 연구에서는 이들 취약점을 쉽게 식별하고, 보완 또는 보안성을 강화할 수 있도록 인터넷 영역, 네트워크 중립 영역(DMZ: Demilitarized Zone), 일반 서버 영역, 내부 서버 영역(Server Farm), 사용자 영역으로 구분하여 각 영역별로 보안강화 방안을 제시하였다. 또한, 행정기관 및 대학을 위한 보안성 높은 정보시스템 아키텍처와 정보보호 기술을 올바르게 적용할 수 있는 방법을 제시하였다. 본 연구는 개념적 지침이 아닌 구체적 활동과 절차 중심의 보안관리 방안을 제시한다는 데에 의의가 있다.

• Journal of Biosystems Engineering
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• 제7권2호
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• pp.36-44
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• 1983

Farm population was rapidly decreasing due to shift of the people from farm sector to the non-farm sector caused by the economic growth of the country. Especially, a great shortage of farm labor in busy farming period in June and October is becoming a serious problem in maintaining or promoting land productivity. The peak of labor requirement in summer is caused by rice transplanting and barley harvesting. In order to reduce the restrictions imposed on farm management by the concurrence of labor requirement and the lack of labor, the experimental study for mechanization of barley harvesting has been carried out in the fields. 1. The machines for barley harvesting were knap-sack type reapers, windrow reaper (power tiller attachment), binder and combine. The order of higher efficiency of machine for barley harvesting was combine, binder, windrow reaper (WR), knapsack type reaper 1(KSTR1), and knap sack type reaper 2(KSTR2; mist and duster attachment). 2. The ratio of grain loss for the manual, binder, and combine plot was about four percent of total field yield. 3. The total yield of barley in 35 days and 40 days harvesting after heading were 514 kg and 507kg per 10 ares respectively. The yield of 35 days-plot was higher than other experimental plots. 4. The lowest yield was recorded in 30 days-plot due to the large quantity of immatured grains and having lighter 1000-grain weight. The ratio of immatured grains was 2.66 percent and 1000-grain weight was 29.4 grams. 5. The total harvesting cost of the windrow reaper was 10,178 won per 10 ares. It was the lowest value compared to other machines. The next were combine, binder, KSTR1, KSTR2, and manual in sequence. As a result, the optimum time of barley harvesting for mechanization was 35-40 days after heading. Combine, binder, and windrow reaper were recommended as the suitable machines for barley harvesting in the work efficiency. However, in total harvesting cost, the windrow reaper was the most promising machine for barley harvesting.