• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.189-191
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• 2022

본 논문에서는 스마트항로표지용 서비스 요구사항 및 이를 실현할 수 있는 무선 통신 후보 기술을 분석한다. 이를 기준으로 기존 통신 기술과 사물 인터넷용 통신 기술로 분류하고, 요구사항 부합도를 판정하여 스마트항로표지용 최적 통신 시스템으로 AIS, LTE-M, NB-IoT 이상 3종의 통신 방신을 제안한다.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.10
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• pp.1153-1159
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• 2014

In this paper we propose novel method for cost of harbor facility of redevelopment of Mookho harbor at Donghae city by using ICT(Information Communication Technology) and Social Network System that is able to participate most residents instead of partly participation for harbor development. In order to do this, we analyze urban marketing which was maximally reflected opinion of resident by using previous simple questionnaire as well as various SNS (Social Network System) as method of effective resident's participation in process harbor redevelopment. We perform optimal selection for ratio of resident's participation. We also propose calculation of optimal construction cost and method of urban marketing.

• Journal of Korean Society of Transportation
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• v.19 no.5
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• pp.99-108
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• 2001

A framework of using and integrating GIS and OR tools for determining the best site selection has been provided. In this research, we demonstrated that both the P-Median heuristic method and MIP method can be successfully applied to the optimum site selection problem of oil tank location selection. Furthermore, the results identified by both approaches are identical. To accomplish this, both GIS road and maritime networks have been constructed and combined to calculated the minimum distance matrix, which is required by both approaches. After the application to the Korean peninsula, the facility locations chosen are Kunsan, Yosu, Busan, and Okgye for each district. As has been shown, the power of GIS and both algorithm have been demonstrated throughout the research and further similar research can also be conducted using the power of GIS and Operations Research tools.

• Journal of Advanced Navigation Technology
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• v.16 no.5
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• pp.744-751
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• 2012

Air Traffic Management(ATM) is to control air traffic flow quickly and safely. For efficient ATM, the ability which calculate optimal route using filight plan and filght information is required. Especially for the time-sensitive air cargo, it is essential. In this paper, therefore, we present a dynamic route search algorithm which calculate optimal route dynamically. The conventional method using Dijkstra algorithm has a problem that recalculate the entire route when some airways are closed. However, the proposed algorithm recalculates only affected waypoints, so it finds optimal route quickly and accurately. Comparisons with the conventional method and the proposed algorithm show that the proposed algorithm provides better.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.183-185
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• 2018

북극항로에 대한 관심이 높아지면서 안전항해를 위한 지원시스템의 필요성이 대두되고 있다. 본 연구에서는 북극지역의 항해지원을 위한 선박 운항성능 추정 모델과 기상 예측 데이터, 빙상정보 예측모델의 결과를 데이터베이스화 하고 이를 바탕으로 북극항로에서의 최적 항해계획 서비스를 제공하기 위한 통신, 사용자 소프트웨어 시스템, 항로 추론을 위한 육상지원시스템을 구축방법을 제안하였다. 또한 제안된 방법을 토대로 선박에 설치하여 통신 및 추론항로 정보제공에 관한 시험을 진행하였다. 향후 북극 항로 항해안전 지원 시스템의 구축 및 원활한 항로 지원 서비스제공을 하는데 중요한 역할을 할 것으로 기대된다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.2-2
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• 2018

선박 항로 설정 시 안전성, 효율성, 편리성 확보 측면에서 항해자들의 경험 기반 주관적인 의사결정에 여전히 의존하였다. 본 연구에서는 HNS(Hazardous and Noxious Substance) 운송 선박의 항해 중 조우하는 고정 위험(Hazard)으로 인해 발생하는 해상교통 사고의 위험성(Risk)를 기반으로 등위험도 곡선(Risk Contour)을 표시하고, 목적별 객체 지향 설정 방법을 제안하였다. 제안된 방법을 실험 해역에서 검증하고, 실제항로와 비교, 평가하였다. 여러 조건과 항로에서 반복적 검증과 실시간 정보 송 수신이 가능해지면, 항해사의 최적항로 설정방법이나 자율운항선박에도 활용이 기대된다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.377-379
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• 2013

우리나라 항만 입출항 통항 선박의 대형화, 고속화에 따른 해양안전사고가 증가하고 있어 항만 연안 해역에서의 해상교통안전 확보가 절실히 요구되고 있는 실정으로, 최근 국제항로표지협회(IALA)에서 항로표지 설계와 배치계획에 대한 의사결정을 지원할 수 있는 항로표지 전문 기능 시뮬레이터의 개발과 주요 항로의 항로표지 설계 및 계획 등을 검증할 수 있는 시스템 필요성을 제기하였다. 우리나라 주요 항로의 항로표지 설계와 적정 배치 여부 등을 검증하고 보완할 수 있는 시뮬레이션 시스템이 필요하며 3차원 가상현실 기법을 이용하여 항로표지의 신설 및 이설에 따른 여러 가지 효과를 직관적으로 파악하고 대상 해역의 특성이 고려된 다양한 해상교통 환경 변화에 따른 항로표지의 신설 및 이설 효과를 선박 운항자 관점에서 검증하거나, 새로운 항만 항로 건설시 최적 항로표지 배치에 대한 의사결정을 지원하기 위한 항로표지용 시뮬레이터 시스템 개발이 진행되고 있다. 이러한 항로표지 시뮬레이터 개발에 필요한 항로표지 관련 3D 모델링의 구현 방법과 종류에 대하여 기술하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.208-209
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• 2023

Intelligent maritime traffic information service for maritime traffic safety operates a service that provides safe and efficient optimal safety routes considering information such as water depth, maritime safety law, weather information, and fuel consumption. However, from a service user's point of view, they prefer a route that suits their personal navigation experience and style, such as unnecessary detours and conservative safety distances for maritime objects. In this study, the optimal safety route can be extracted based on the experience of service users without reflecting the separate maritime environment by adjusting the weight of the trunk line for the area where the ship frequently navigates with the ship's track data collected through LTE-M model was studied.

• Journal of Applied Biological Chemistry
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• v.53 no.3
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• pp.179-183
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• 2010

To produce the functional food materials from edible mushrooms, hot-water extracts from 70 kinds of mushroom mycelia were examined for anti-complementary activity and Phellinus linteus showed the highest activity through the complement fIxation test. The maximum production of Phellinus linteus mycelia with anti-complementary activity was observed in culture medium containing soluble starch 3.0%, peptone 0.3%, yeast extract 0.4%, $MgSO_4{\cdot}7H_2O$ 0.1%, $K_2HPO_4$ 0.2% and in the culture conditions controlled at initial pH 7.0, $30^{\circ}C$ and 150 rpm by the rotary shaker. In addition, the maximum production of mycelial dry weight was 15 mg/mL after 18 days under the optimal conditions, and anti-complementary activity was reached to 88% in 5 L-jar fermenter.

• The Korean Journal of Mycology
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• v.39 no.2
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• pp.117-121
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• 2011

To produce the functional food materials, 50 kinds of the mycelial extracts from edible mushroom were examined for anticoagulant activity and Phellinus linteus showed the highest activity through the activated partial thromboplastin test (aPTT). The maximum production of anticoagulant activity and the mycelial growth was observed in culture medium containing soluble starch 3.0%, peptone 0.1%, $MgSO_4{\cdot}7H_2O^{\circ}C$ 0.1%, $K_2HPO_4$ 0.1% and in the culture conditions controlled at initial pH 7.0, $30^{\circ}C$ and 150 rpm by the rotary shaker. In addition, the maximum production of mycelial dry weight was 7.5 mg/mL after 10 days under the optimal conditions, and anticoagulant activity was reached to 390 sec in 5 L-jar fermentor.