• Water for future
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• v.56 no.7
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• pp.25-33
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• 2023

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.172-174
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• 2023

최근 3년간 위성항법 보유 및 활용이 가능한 주요 국가들은 DGNSS 중파서비스를 중단하고 위성기반의 보정 서비스(SBAS) 제공 추세이다. 한국형 SBAS 서비스인 KASS가 개발 중에 따라 우리나라 해양분야 활용 가능성 검토 및 중파서비스에 대한 정책방향 연구가 필요하다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.166-168
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• 2023

기존 eLoran 수신기는 보정기준국(인천·평택항 반경 30km 이내에서만 이용 가능하며 ASF 맵보정 정보를 저장하는데 한계가 있음. 자체 오차정보를 보정하는 기능을 가진 eLoran/GPS 통합수신기의 알고리즘 및 성능 분석을 통해 더 넓은 해역에서 eLoran 서비스를 백업항법시스템으로 이용하기 위한 기반 마련

• Journal of Korea Port Economic Association
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• v.29 no.4
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• pp.119-134
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• 2013

Korea has established the MOMAF (Ministry of Maritime Affairs and Fisheries) in 1996 while only a few countries have adopted the unified management system for the area of maritime, oceans and fisheries affairs. The Ministry has been broken up to three parts of maritime affairs, oceans and fisheries and allocated to each related ministries in 2008, and reorganized as the Ministry of Oceans and Fisheries including maritime affairs in 2013. However, the newly established MOF (Ministry of Oceans and Fisheries) has been evaluated as simply duplicated the former organization so as not to meet the oceanic environmental changes. This paper aims to suggest the appropriated organizational reinforcements measures on the basis of analysis of questionnaire survey which has been conducted targeting experts such as academic researchers and industry field players in the area of oceans, maritime and fisheries. The survey pointed out mainly five scopes such as (1) transferring the administrative task of shipbuilding and plant industries from the existing Ministry to the MOF, (2) reinforcing the structural functions of maritime, port construction and logistics affairs, (3) collaboration system with related Ministries for the ocean sovereignty, (4) securing the financial support system for the maritime industries, (5) transferring the management authority of maritime and ocean universities from the existing Ministry to the MOF. Looking back on the interministerial interest conflicts, it is very difficult to agree on the transfer of the existing task of above first and fifth suggestions. But the remain three suggestions could be done with interior abilities of the MOF by means of structural changes and professional manpower supplement.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.47-49
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• 2022

'14년부터 대국민 해양안전을 위해 서비스 중인 해양안전 모바일 앱 '해로드(海Road)'의 다운로드 수가 50만 건을 돌파함에 따라 다양해진 이용자 특성에 맞게 앱 이용이 활성화되고 이용자 중심의 기능을 제공할 수 있도록 개선 방안을 연구하고자 한다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.4
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• pp.549-566
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• 2022

Recently, artificial intelligence (AI) technology has progressed rapidly, and industries using this technology are significantly increasing. Further, analysis research using text mining, which is an application of artificial intelligence, is being actively developed in the field of social science research. About 125 laws, including joint laws, have been enacted under the Ministry of Oceans and Fisheries in various sectors including marine environment, fisheries, ships, fishing villages, ports, etc. Research on the laws under the Ministry of Oceans and Fisheries has been progressively conducted, and is steadily increasing quantitatively. In this study, the domestic research trends were analyzed through text mining, targeting the research papers related to laws of the Ministry of Oceans and Fisheries. As part of this research method, first, topic modeling which is a type of text mining was performed to identify potential topics. Second, co-occurrence network analysis was performed, focusing on the keywords in the research papers dealing with specific laws to derive the key themes covered. Finally, author network analysis was performed to explore social networks among authors. The results showed that key topics have been changed by period, and subjects were explored by targeting Ship Safety Law, Marine Environment Management Law, Fisheries Law, etc. Furthermore, in this study, core researchers were selected based on author network analysis, and the tendency for joint research performed by authors was identified. Through this study, changes in the topics for research related to the laws of the Ministry of Oceans and Fisheries were identified up to date, and it is expected that future research topics will be further diversified, and there will be growth of quantitative and qualitative research in the field of oceans and fisheries.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.48-49
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• 2022

현재 해양수산부에서 발주하여 선박해양플랜트연구소에서 주관하여 진행하고 있는 해양 디지털 항로표지 정보 협력 시스템 과제가 진행 중에 있다. 해양 디지털 항로표지 정보 협력 시스템 과제는 실증 센터 구축을 목표 중 하나로 잡고 있으며, 실증 센터 구축을 위해서는 실증센터 구축 이전에 연구개발 결과물을 유사한 환경에서 성능을 검증할 필요가 있다. 또한 해양 디지털 항로표지 정보 협력 시스템 과제는 외부의 정보를 활용할 필요가 있어 정보통신의 측면에서의 보안이 유지되는 공간이 필요하다. 이를 위하여 본 연구에서는 보안이 필요한 서비스 설치 공간와 일반사용자가 서비스를 사용하기 위해 일반적으로 접근이 가능한 공간을 연결하고, 연결 방법에 대하여 분석하였다. 또한 서비스 개발 기관에서 개발 중인 서비스 코드를 보안 공간으로 전송하여, 시스템 설치 및 SW 품질 테스트 등이 용이한 방안에 대하여 연구하였다.

• 해운
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• no.2 s.25
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• pp.34-36
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• 2006

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.195-197
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• 2022

위성항법시스템(GPS)은 편리성, 활용도 등으로 인해 항법, 이동통신, 금융, 전력 등 여러 분야(측위·항법·시각)에서 사용하고 있다. 위성이 지구로부터 약 2만키로미터 떨어져 있어 위성신호 수신 세기가 약해 외부로부터 전파간섭이나 교란 등 보안에 취약한 단점이 있다. 주요국(미국, 유럽, 중국, 인도 등)은 보안을 강화하여 독자적인 위성항법 시스템을 구축하여 운영하고 있다. 우리나라도 지상기반(eLoran)과, 위성기반(KPS)의 항법시스템을 구축중이다. 시스템 구축이 완료되면 한층 강화된 국가 PNT 체계 구축으로 만일의 사태에 발생할 수 있는 상황에 대비할 수 있을 것으로 기대하고 있다. 본 연구에서는 지상기반, 위성기반의 항법시스템에 대한 핵심 기능과 추진계획을 기술하였으며, 관련 연구개발을 통해 더욱 정밀한 서비스 제공으로 해양뿐만 아니라 자율주행 이동체, 무인기 등 여러 산업 분야에 서비스를 확대해 나갈 계획이다.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.12 no.4
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• pp.349-358
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• 2007

In order to understand biogeochemical cycles of organic carbon in the permeable intertidal sandy sediments of the Nakdong estuary, we estimated the organic carbon production and consumption rates both in situ and in the laboratory. The Chl-a content of the sediment and the nutrient concentrations in below surface pore water in the sandy sediment were lower than in the muddy sediment. The sediment oxygen consumption rates were relatively high, especially when compared with rates reported from other coastal muddy sediments with higher organic carbon contents. This implied that both the organic carbon degradation and material transport in the sandy sediment were enhanced by advection-related process. The simple mass balance estimation of organic carbon fluxes showed that the major sources of carbon in the sediment would originate from benthic microalgae and detrital organic carbon derived from salt marsh. The daily natural biocatalzed filtration, extrapolated from filtration rates and the total area of the Nakdong estuary, was one order higher than the maximum capability of sewage plants in Busan metropolitan city. This implies that the sandy sediment contributes greatly to biogeochemical purification in the area, and is important for the re-distribution of materials in the coastal environment.