• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제9권7호
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• pp.157-164
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• 2020

지속적인 수산물의 소비량 증가에 따라 어족자원의 한계성에 직면한 어로어업대신 기르는 방식의 양식업이 대응방안으로 등장하였으며, 최근에는 4차 산업혁명기술과 융복합을 통하여 스마트양식 산업이 빠르게 발전하고 있다. 이에 따라 전 세계를 대상으로 양식산업의 우위성과 기술표준 헤게모니를 확보하기 위하여 스마트양식 플랫폼의 미래 모형 도출이 매우 중요한 시기가 되었다. 본 연구에서는 먼저 스마트양식 전문가들의 인터뷰를 통해 스마트양식산업의 중점 사항들을 도출하고 거시환경분석 중 PEST 방법론을 적용, 스마트양식과 관련된 정치, 경제, 사회, 기술 분야의 환경분석을 통하여 스마트양식 플랫폼의 미래 방향성을 도출하였다. 과거 생물 생장 관리의 자동화에 국한되었던 단순한 스마트양식 플랫폼에서 육종, 생산, 경영, 유통의 양식 가치사슬 전 과정을 포함하고, 인공지능 기반의 디지털 트윈기술을 통하여 리스크 최소화 및 상황 최적화 스마트양식 플랫폼으로 발전 할 수 있도록 선진 모델을 제시함으로써 공공 및 산업계에서 관련 사업 기획 및 추진 시에 도움이 될 것으로 기대한다.

• 환경위생공학
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• 제18권1호
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• pp.15-22
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• 2003

Treatability tests were conducted using EMC process to study the feasibility of applying this process as recycling-water treatment system in high density seawater aquaculture farm. To study the effect of organic and ammonia nitrogen loading on system performance, hydraulic retention time of reactor was reduced gradually from 12hr to 10min. The conclusions are can be summarized as follows. When the system HRT was reduced from 12hr to 10 min gradually, there was little noticeable change(reduction) in ammonia nitrogen removal efficiencies until 2hr of HRT, however, removal efficiencies were decreased dramatically when the system was operated under the HRT of less than 2hr. In case of organics(COD), there was no dramatic deterioration in removal efficiencies depending on HRT reduction. More than 90% of removal efficiencies were maintained successfully when the system was operated at the HRT of 10 min. In case of system performance depending on media packing ratio in reactor, there was little difference in each reactor performance depending on media packing ratio in reactor when the reactors were operated under the HRT of longer than 1hr, however, differences in reactor performances were considerably evident when the reactors were operated under the HRT of shorter than 1hr. That is, the more reactor was packed, the better reactor performed. When comparing reactor performance among 25%, 50%, 75% packed reactor, it can be judged that media packing ratio more than 50% plays no significant role in increasing reactor performance. For this reason, packing the media less than 50% is more reasonable way in view of economic. Such a tendency well agreed with the variation of ammonia-nitrogen removal efficiencies according to the media packing ratio in reactors at each HRT. Difference in effluent ammonia-nitrogen concentration between 50% media packing reactor and 75% media packing reactor was negligible. When comparing with the results of 25% packing reactor, difference was not so great.

• 수산해양교육연구
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• 제25권5호
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• pp.1055-1067
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• 2013

We attempted to apply the HACCP system adopted in the food industry to a olive flounder (Paralichthys olivaceus) aquaculture farm to ensure the hygiene safety of farmed fish. In this study, HACCP system procedures, including HACCP team organization, critical point determination, establishment of standard limits etc., were established using Codex 12 procedures. To determine whether hazards were critical elements, we evaluated the likelihood and seriousness of each hazard element. The likelihood of residual medicine exceeding the acceptable limit in shipped fish products was demonstrated to be a critical hazard element. Management of the shipment stage was determined to be a critical control point (CCP). Checking the records for stock and release and maintaining a history of medicine use before shipping the fish were suggested as monitoring methods. The standards for acceptable residual medicine were set based on relevant laws and regulations, and then the limits were adapted and established for the CCP. An HACCP plan applicable to olive flounder farms was established.

• 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.

• 수산경영론집
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• 제40권1호
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• pp.1-26
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• 2009

The aquaculture management considers the maintenance of households lifehood more than profit maximization. As aquaculture industry has developed enterprise farms appeared, and the small and the large scale farms coexist. The features of coexistence could be summarized as followings. First of all, the large scale farms show the higher net profit while the small scale farms show the higher profit per 1ha and the earning rate. Secondly, in the case of over 2ha, the earning rate is stable in spite of the scale expansion. Moreover, in processing method, dried seaweed occupy the biggest proportion in the small scale farms while the raw seaweed occupy the biggest proportion in the large scale farms. Lastly, the scale of farms becomes larger, the participation rate of household labor rises. This thesis analyses the efficiency of Korean seaweed farms in the way of DEA model and suggests the improvements for the efficiency management. The mean technical, pure technical and scale efficiencies were measured to be 0.88, 0.96 and 0.91, respectively. Among the 20 farms included in the analysis, 10 were technically efficient and 12 were scale efficient. In conclusion, it is shown that the aquaculture farms has been becoming the form of coexistence. This appearance results in the effort for reducing the cost in the small scale farms and in profit maximization in the large scale farms. On the other hand, middle scale farms is inefficient compared with the small or large scale farms. Therefore, in order to achieve the efficiency, it is necessary to accomplish economy of scale by extending farm size or to cut expenses by reducing farm area. In other word, the efforts for achieving the efficiency is required in a different direction in spite of the same scale.

• 한국양식학회지
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• 제16권4호
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• pp.252-256
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• 2003

양식장에서 생성되는 어류의 노폐물이나 미섭취되고 남은 사료분은 고농도의 질소와 인을 함유하고 있으나 미처리된 상태로 처리하고 있어 그에 따른 처리방안이 요구된다. 본 연구에서는 기존의 처리공정의 대용으로 생태공학적 처리로서 경제적으로 질소와 인 제거를 위해 실내재배조에 물상추를 적용하였다. 앙식장 배출수 처리를 위한 생물여과상의 처리효율을 향상시키기 위하여 물상추 여과조를 설치하여 다양한 조건하에 시도되었다. 실험 재료인 수초는 물상추를 재배하였고, 6개의 수조(62${\times}$60${\times}$86cm)에 재배조 용량이 80 L가 되도록 채우고 수리학적 체류시간(hydraulic retention time; HRT)을 1, 2, 4, 8일로 하여 운영하였다. HRT 8일인 경우 1차 배출수를 대상으로 하였을 경우 BOD, T-N, T-P의 제거율은 92.8, 79.0 및 93.6%로 각각 나타났다.

• 수산해양기술연구
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• 제50권1호
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• pp.58-66
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• 2014

The purpose of the study is to estimate the Green-House-Gas (GHG) emissions from domestic eel farm in the water recirculation system or still-water system by the assessment of energy consumptions and GHG emissions for establishing to reduce standards of GHG from a sustainable perspective. GHG emission components as seeds, feed, fuel, electricity, fixed capital, fish respiration, and others were analysed at the different culture type between water recirculation system and still-water system by 3 stage farm size of small, medium, large scale. The result showed that the mean GHG emission of the eel farm was $18.7kg{\cdot}CO_2$ in the stage of production per fish 1kg at different culture type and farm size. Therefore it could be useful for policy, planning, and regulation of aquaculture development with establishing GHG reduction standards.

• Journal of Information Processing Systems
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• 제17권6호
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• pp.1179-1190
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• 2021

A data acquisition and monitoring system was developed for an automated system of a smart fish farm. The fish farm is located in Jang Hang, South Korea, and was designed as circulation filtration system. Information of every aquaculture pool was automatically measured by pH sensors, dissolved oxygen sensors, and water temperature sensors and the data were stored in the database in a remoted server. Modbus protocol was used for gathering the data which were further used to optimize the pool water quality to predict the rate of growth and death of fish, and to deliver food automatically as planned by the fish farmer. By using JSON protocol, the collected data was delivered to the user's PC and mobile phone for analysis and easy monitoring. The developed monitoring system allowed the fish farmers to improve fish productivity and maximize profits.

• 한국해안·해양공학회논문집
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• 제33권5호
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• pp.179-186
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• 2021

재생에너지 3020 이행계획, 한국판 뉴딜 계획 등에 따라 신재생에너지 생산 비중 증가 대응과 해상풍력발전 12GW 건설을 위해 어업생활권 점유 대안 마련과 주민 수용성 제고를 위한 방안이 요구된다. 본 연구는 동해에 적합한 해상풍력발전단지와 연계한 수산자원 공존모델의 차별방안을 제시하였다. 동해는 부유식 해상풍력 발전단지 조성의 최적지로 단지 내 공유수면을 활용하여 외해양식에 적합한 고부가가치 어종인 참다랑어를 양식함으로써 에너지 생산, 수산자원 개발, 관광산업화를 통한 이익 창출로 경제적 효과 발생을 예측하였다. 또한, 운영관리 기술 공유 등으로 예산 감축, 스마트 관리 추진과 어민소득 증대 가능성을 확인하였다.

• Fisheries and Aquatic Sciences
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• 제23권5호
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• pp.13.1-13.7
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• 2020

Stock enhancement is considered to be a valuable approach for restoring fishery resources. Because no specific official institution in Taiwan is responsible for the production of fry, the released fry are purchased directly from the private sector. However, fishermen from the private industry have not established a genetic background, so the genetic composition for each batch of released fry is unclear. Mangrove red snapper (Lutjanus argentimaculatus), a prominent species released in Taiwan, was collected after its official release. One hundred and two field samples were compared with four batches of hatchery fry (n = 685) by using a microsatellite-based multiplex PCR assay. Four of the field samples (3.9%; 4/102) were revealed to be from a fish farm and most likely from a single batch. This study revealed that wild mangrove red snappers are genetically different from those originating from farms, and their origins can be traced through molecular markers, even without information on breeding stocks.