• The KIPS Transactions:PartA
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• v.10A no.5
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• pp.513-518
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• 2003

The quantity of container transportation of the world habors is constantly increasing by 8.8 per year until 2011. Present port facilities will not satisfy it. So facility expansion is necessary. Because the processing cost in the harbor becomes to 30% of total transportation expense, major pors inthe world are making an effort in the automation facilities to solve the problems of higher labor costs and indufficient labor and to maximize the efficiency of the work and use of the land. Especially, the automation of the gate, which is the place of cargo's appearance and disappearance, the node which creates the information, is now rising as the important issue. In this study suggest more efficient design for port gate automation. First, calculate scale of gate complex, and compare of 1 step gate and 2 step, and optimal design for automated operation method of gate process.

• Korea Logistics Conference
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• v.10 no.2
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• pp.303-328
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• 2002

• Korea Logistics Conference
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• v.13 no.3
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• pp.245-252
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• 2005

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2007.12a
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• pp.241-242
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• 2007

This paper aims to determination of container ship's economical replacement policy by Fuzzy Annual Equivalent Cost Method Especially, though there was much vagueness to expense for calculation of container ship's economical life, this paper expressed such vague nature with a fuzzy number. And this paper developed the fuzzy expense model with a fuzzy number, and to analyze more practically than an expense model, was decided economical life-age with an application in a containership of various volumes.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.19 no.2
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• pp.113-127
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• 2007

In this study, a model to calculate the expected total construction cost is developed that simultaneously considers the rehabilitation cost related to the sliding of the caisson, the economic damage cost due to harbor shutdown in the event of excessive caisson sliding, and the economic damage cost due to temporal operational stoppage by excessive wave overtopping. A discount rate is used to convert the damage costs occurred at different times to the present value. The optimal cross-section of a caisson is defined as the cross-section that requires a minimum expected total construction cost within the allowable limit for the expected sliding distance of the caisson during the lifetime of the breakwater. Two values are used for the allowable limit: 0.3 and 0.1 m. It was found that the economic damage cost due to harbor shutdown by excessive caisson sliding is more critical than the rehabilitation cost of the caisson or the economic damage cost by excessive wave overtopping in the decision of the optimal cross-section. In addition, the optimal cross-section of the caisson was shown to be determined by the allowable limit for the expected sliding distance rather than the minimum expected total construction cost as a larger value is used for the threshold sliding distance of the caisson for harbor shutdown.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.11a
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• pp.263-272
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• 2004

전 세계 항만은 급속히 변화하는 환경에 적응하고, 경쟁국가 항만보다 앞서나가기 위한 노력을 지속적으로 경주하고 있는 실정이다. 주목할 만한 세계항만의 변화는 연평균 $8.4\%$씩 증가 추세에 있는 전 세계 물동량 및 선박의 대형화 즉, 현재 8,000TEU급 선박은 물론 12,000TEU급 선박까지 출현하는 현실을 들 수 있다. 이외에도 인건비 상승, 항만관련 기술 환경의 변화와 같은 환경적 변화가 급격히 일어나고 있는 실정이다. 국내의 경우도 2000년 현재 912만TEU 수준인 물동량이 2011년에는 1,318만 TEU로 증가할 것으로 전망하고 있는데 이는 2000년 현재의 3배 수준이고, 인건비 또한 컨테이너터미널 비용의 $40\%$이상을 차지하는 둥 다양한 어려움을 겪고 있다. 따라서 국내 특히 부산항만은 이러한 환경변화에 대응할 수 있는 컨테이너터미널 시설이 필요한데 이를 위해서는 현재의 시설은 최대한 활용하면서 생산성의 극대화는 물론 비용 절감을 위한 방안이 필요하다. 따라서 본 연구는 국외 선진 자동화 컨테이너터미널의 야드 운영현황을 파악하여 요인도출 및 이러한 결과를 토대로 국내 의 경우 어떠한 부분들을 자동화하는 것이 가장 효과적인지에 관한 대안을 도출한다. 도출된 대안별로 초기 투자비 및 운영비에 대한 현재가치를 제시하여 의사결정자의 의사결정 시 참고할 수 있는 방안을 제시하고자 한다. 이러한 연구는 현재 국내 컨테이너터미널이 향후 자동화로 전 환할 때 중요한 기준이 될 수 있으며 항만에 관한 국가 정책수립 시에도 중요한 참고자료로서 활용가능하다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.13-13
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• 2021

최근 항만에서 기인한 대기오염물질에 대한 심각성이 고조되고 있다. 본 연구는 부산항 (북항, 감천항 및 다대포항)을 대상으로 6월 한달 간의 항내에서 발생하는 대기오염물질 배출량을 추정하였다. 신뢰성 있는 대기오염물질 배출량 추정을 위하여 AIS(Automatic Identification System) 데이터를 기반으로 한 계산 방신인 Bottom-up 추정 방식을 활용하였으며 연료소모총량과 연료소비의 결과로서 발생한 대기오염물질 총량을 함께 분석하였다. 또한, 추정 배기가스 량을 이용하여 부산항에서의 환경 비용을 계산하였다.

• Journal of Korea Port Economic Association
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• v.27 no.2
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• pp.85-110
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• 2011

The purpose of this study is to evaluate the social costs of inland trucking and maritime transport between Kwangyang Port in Korea and the Great Lakes in US. Also, this study compares these social costs each other, and finds the way how to internalize them for the efficiencies of national logistics policies. This study uses the Contingent Valuation Method to evaluate the social costs for the two transport modes in each country. The final result is that the social cost difference between inland trucking and maritime transport around US Great Lakes area is not so significant that there are not many chances to enhance the maritime transport in the region. However, in case of Korea, there is significant difference in social costs between the two transport modes, so that Korea government may have a lot of chances to improve the seaborne trade by way of various internalization policies.

• Journal of the Korean Institute of Navigation
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• v.25 no.2
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• pp.97-106
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• 2001

The purpose of this paper is to determine the expected percentage of the 'VTS addressable' casualties that could be prevented with the installation of fourth level(Automatic Dependent Surveillance) of coastal VTS. In this study, it determines the VTS benefit by multiplying casualty rate reduction factors by the effect level of causal factors. The development of casualty rate reduction factors was based on the questionnaire survey, and the evaluation of effect levels was based on the causal analysis using functional block diagram. The results of this paper are compared With the results of worldwide literature related to the VTS effectiveness. One or more of the key variable inputs of this study, casualty rate reduction factors, may be somewhat uncertain and therefore subject to sensitivity analysis.

• Journal of Navigation and Port Research
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• v.36 no.8
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• pp.673-681
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• 2012

As competition increases among ports, new marketing strategies and differentiated means in addition to the existing core services are needed to prevent existing container shipping companies from escaping and to attract new customers. The additional services and reward programs are investigated. How these variables affect relational commitment in terms of customer retention is examined. Customers of the container terminals are examined in terms of psychological behavior. This study presents the structural equation model that shows the connection among benefits, rewards, switching costs and relational commitment. The empirical analysis is done with the subject of the container terminal users and the implications are derived.