• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.10a
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• pp.31-33
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• 2010

ECDIS(Electronic Chart Display and Information System 전자해도정보시스템)와 같이 진보된 IT 기술을 적용한 항해장비는 단순히 항해의 목적으로 사용하는 것 이상으로, 해양환경의 보호와 감시에 응용하는 등의 방법으로 그 활용범위를 직접적이고 적극적으로 확대할 수 있다. 종이해도와 달리, ECDIS는 '시간'이라는 4차원적 요소를 도입함으로써 동적시스템(Dynamic System)으로 전환이 용이하다. 이것은 조석, 조류, 바람과 파도와 같은 시간변수(Time Variables) 데이터를 적용함으로써 가능하다. 이 시간변수들을 어군이동위치, 계절변화에 따른 해저지형, ballast water의 취수를 위한 청수지역 등과 함께 활용을 한다면, green ECDIS를 활용한 green navigation은 현실화가 가능하다. 이에 따라 해상종사자의 환경인식은 뚜렷하게 그리고 유용하게 증가할 것이다. 본 논문에서는 green ECDIS의 개념과 모형의 설계 그리고 프로토타입의 개발을 제안하고자 한다.

• Journal of Navigation and Port Research
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• v.28 no.9
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• pp.809-813
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• 2004

Experiments revealed that green water phenomena resemble dam-break, in which flow over deck edge forms a vertical wall of water and suddenly falls down into deck. In this paper the dam breaking problems were formulated using Glimm's algorithm, so-rolled, Random Choice method and, several validations were presented.

• Transactions of the Korean Society of Automotive Engineers
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• v.23 no.1
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• pp.1-10
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• 2015

In urban area, since multipath and signal attenuations frequently occur due to street trees, street lights and buildings, it is difficult to obtain accurate navigation solution using GPS. As these problems also impact negatively on the INS/GPS coupled system, implementing advanced transportation systems such as autonomous navigation system and Intelligent Transportation System (ITS) become quite hard. For this reason, to alleviate deterioration of navigation system performance in urban area, direction information extraction algorithm using vision system is proposed in this paper. 2D Finite Rate of Innovation (FRI) technique is applied to extract lane edges. The proposed technique is simulated using road images and feasibility of proposed technique is analyzed through the simulation results.

• Journal of Navigation and Port Research
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• v.28 no.7
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• pp.647-651
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• 2004

FPSOs are commonly proposed and used for offshore oil production. Due to the fundamental requirement of FPSOs to remain moored at their location, they are unable to avoid severe weather. FPSOs normally operate head to the weather, and sensitive equipment located near the bow will be susceptible to green water damage. Damage may occur to both equipment and superstructure, with resulting risk to personnel. To initially access green water is allowed by the physical understanding of green water events. In this paper the main focus is put on the physical phenomena of green water accounted for with the tested data in regular waves.

• Journal of Navigation and Port Research
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• v.33 no.9
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• pp.653-657
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• 2009

The aim of this study draws out the Green Index of a Seaport (GIS) that is comprehensive and coordinated approach to diminish the negative impacts of port operations using a Factor Analysis (FA) which can evaluate the level of cleanness of seaport. For this purpose, the questionnaires were sent to the experts and port stake holders, and received 75 out of 100. In this survey, Cronbach's alpha has the numerical value 0.76. Thus it means that this survey has internal consistency reliability. Overall, 15 components were selected from the literature review and five factors were extracted by factor analysis.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.06a
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• pp.235-237
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• 2014

국제무역지수의 증가로 인한 해상운송 및 항만개발수요의 증가는 국제해사기구(IMO)를 중심으로 선박기인 대기오염, 특히 온실가스 배출규제의 강화를 초래하였다. 이러한 국제환경규제에 대응하고 선박 및 항만기인 환경오염 저감을 통한 자국민의 후생증진을 위하여 미국과 유럽을 중심으로 Green Port 정책의 시행이 점점 확대되고 있는 추세이다. 이에 따라 우리나라도 2010년 녹색성장기본법을 재정하고 국가 Green Port 구축 종합계획을 수립하여 각 항만별 그린포트 구축계획의 수립 및 이행을 촉구하고 있는 실정이다. 따라서 본 연구의 목적은 동북아시아 오일허브 항만을 지향하는 울산항의 지속가능한 친환경 항만운영을 위한 울산항의 Green Port 정책방안의 수립에 있다. 이를 위해 울산항의 친환경 항만정책의 현황 및 문제점을 살펴보고, 해외 해양선진국의 그린포트구축 사례분석과 전문가 자문 및 설문조사를 통하여 울산항 그린포트 구축방안을 도출하였다. 그리고 도출된 방안에 대하여 전문가 AHP 설문조사 및 분석을 통해 울산항에 도입해야 할 그린포트 구축방안에 대한 우선순위를 도출하였다. 마지막으로 울산항의 특성에 맞는 지속적인 그린포트 정책의 시행을 위한 여려 정책대안을 제시하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.215-216
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• 2016

그린정보화(Green Informatization)는 기후변화 문제에 대처하여 다양한 산업 분야에서 기술적인 해결책의 한 부분으로 활용되어 저탄소 녹색성장에 크게 기여하는 효과적인 수단으로 인식 되고 있다. 기업의 그린정보화를 실천하기 위하여 도입하는 친환경적인 정보시스템은 기업에서 에너지 절감과 지속가능한 사회적 책임을 이행하게 되는 실천 도구가 되고 있다. 물류기업들도 녹색물류를 실천의 일환으로 그린정보기술(Green IT)을 도입하여 온실가스 배출량을 줄이는 노력을 기울이고 있다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.237-240
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• 2011

The purpose of this paper is to increase the competitiveness of firms by establishment of green marketing strategy and its application to a new alternative energy development, ultimately contributing to the advancement of national economy. This study adopted an integrated approach to develop a strategic theory of 'Sun Tzu on the Art of War' that is one of the oldest military treaties and still applicable to today's management development. It applies to the empirical result from a new alternative energy development. For more qualitative improvement of this paper, it needs further detailed studies in both theory and practice in green marketing theory that is applicable to the new alternative energy development.

• Journal of Navigation and Port Research
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• v.29 no.5 s.101
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• pp.465-473
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• 2005

In the analysis of the foreign cases on the use of Transit Signal Priority(TSP), the reduction in bus travel time ranged from 6 to $32\%$. This study demonstrates how TSP can be applied to Ulsan Metropolitan City. TSP techniques were used on the bus routes that run eastward for 4.07 kilometers along Munsoo-Ro, a major artery in the most congested part of the city. The simulation was performed on one hour of peak traffic time, using the two TSP strategies of Early Green and Extended Green. The use of the Early Green strategy resulted in an average decrease in travel time ranging from 18.1 to $25.8\%$ and an increase in average travel speed ranging from 30.9 to $40.1\%$. The Extended Green strategy resulted in an average decrease in travel time ranging from 18.1 to $30.3\%$ and an increase in an average travel speed of approximately $30.1\%$. This study demonstrates that TSP is effective in decreasing travel time and increasing travel speed of the bus system in Korea.

• Journal of Advanced Navigation Technology
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• v.7 no.2
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• pp.180-190
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• 2003

By using accurate closed-form Green's functions obtained from real-axis integration method, the full-wave analysis of CPW discontinuities are performed in space domain. In solving MPIE(Mixed Potential Integral Equation), Galerkin's scheme is employed with the linear basis functions on the triangular elements in air-dielectric boundary. In the singular integral arising when the observation point and source point coincides, the surface integral is transformed into the line integral and the integral is evaluated by regular integration. By using the Green's function from the real-axis integration method, the discontinuities are characterized accurately.