• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.869-870
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• 2013

본 논문은 Ubiquitous Networking 기술을 기반으로 한 IT와 수산업과의 융합 서비스 기술을 지원하기 위해서 양식장의 지능형 유비쿼터스 시스템의 구축을 제안한다. 이 시스템은 어장의 원격 모니터링 및 관리, 스마트폰을 기반으로 어장의 이상 변화를 감지하고 SMS 등을 통해서 알림을 제공한다. 그리고 양식장 관리 정보 모니터링 및 제어 등을 통한 수산물 양식의 양식장 미생물 유지 및 최적 관리를 위한 유비쿼터스 기술과 양식장의 양식 관리 정보 공유 플랫폼을 개발한다. 따라서 양어장 내의 정보를 무선 센서를 통해 자동으로 수집하고, 수산물의 종류, 성장 단계, 기후 및 환경에 따라 각종 생장 조건을 최적으로 관리함으로써 각 수산물 재배에 최적화된 파라미터를 바탕으로 생장 및 품질을 예측하여 수산물의 생장 및 생산력을 극대화한다.

• Journal of Aquaculture
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• v.6 no.3
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• pp.187-197
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• 1993

Studies related to water quality in catfish ponds were conducted on commercial catfish production ponds and compared with its receiving streams' water quality in central and west-central Alabama. The ponds were stocked with 10,000 fish/ha. The ponds were aerated nightly (0000-0600 hrs). Fish were fed to satiation at about the same time, six-days a week. In order to assess the pollutional strength of effluents from commercial channel catfish ponds, water samples were collected during each calender season from fall 1990 through summer 1991, and selected water quality variables were monitored. Mean values for water temperature, dissolved oxygen concentration, pH, settleable solids, total suspended soilds, volatile solids, total phosphorus, soluble reactive phosphate, biochemical oxygen demand, total ammonia nitrogen, nitrite, nitrate, and total Kjeldahl nitrogen were basically the same (P> 0.05) between samples taken from the surface and near the bottom. Concentrations of most water quality variables of catfish ponds were higher than those of receiving streams, and especially it had much higher average concentrations of nitrogen and phosphorus than streams.

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.222-223
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.214-215
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.204-205
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2004.05a
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• pp.349-350
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• 2004

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.279-280
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• 2001

넙치(Paralichthys olivaceus)는 1980년대 초부터 일본으로부터 수정란을 도입하여 양식되기 시작하였으며, 현재 전 연안에서 종묘생산 또는 양식이 이루어지고 있다. 그러나 최근 연안어장의 오염과 질병의 발생으로 인해 넙치 양식 생산성이 크게 낮아지고 있다. 또한 장기간 동일계통의 넙치를 친어로 이용함으로서 유전적 열성화로 인한 많은 문제점이 나타나고 있는 실정이다. (중략)

• Korean Journal of Fisheries and Aquatic Sciences
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• v.20 no.3
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• pp.237-247
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• 1987

The present study deals with the physico-chemical and meteorological conditions in Porphyra-cultivation ground to determine the relationship between laver production and its environmental factors in Kwangyang Bay from January to April in 1986. As a result, major environmental factors which are thought to have a great influence upon the poor harvest during the cultivation period are as follows; 1) the excessive rainfall in the beginning of cultivation period 2) the accumulation of suspended matters on the thallus of laver 3) the decrease of current velocity and the stagnation of the water in the cultivation ground.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.5
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• pp.625-632
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• 2014

It is required a lot of strength in aquaculture, such as dragging up or moving heavy loads. So, a helper system like excavator at construction is need for fishermen. As most of HFMSC(Hydraulic Fishery Managing Small Crane)s are operated based on ON/OFF control, it can make sway the contents in the crane. In worse case, it could threaten workers. In this paper, we development the MICOM based controller which can reduce the swing sway. This paper describes the hydraulic characteristics, the design method of controller and the control algorithms. And, the proposed controller show the efficiency to carry out the experimental validation.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.5
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• pp.605-617
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• 2021

The recovery of the sedimentary environment around a fallowing shellfish farm during its rest period after 20 years of long-running operation, was explored in Tongyeong Bay of Korea. Seasonal survey on macrobenthos community was conducted from July 2016 to September 2018 at five stations, which included the fallowing shellfish farm after 20-year operation (FF), a newly installed shellfish farm (NF), a shellfish farm for comparison around the closed shellfish farm (CF), and control stations with no farming activities (Con1, Con2). The total number of species and the density of macrobenthos were higher at the shellfish farm stations than the non-shellfish farm station, and their seasonal changes were significant. The dominant species at the shellfish farm stations was Capitella capitata while Paraprionospio patiens was dominant at the non-shellfish farm stations. The two dominant species were potential organic contamination indicators usually inhabiting the areas with dense organic matter. This suggests that the overall survey area was highly polluted with organic matters. Multivariate analysis showed that the macrobenthic community of CF changed to a level similar to that of Con1 immediately after the investigation, but not to a state above the Con1 level. Furthermore, the changes in NF were not significant when compared to those in CF.