• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.10a
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• pp.208-209
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• 2009

전남 서남권은 동남권 지역에 이어 제 2의 조선산업 클러스터를 위한 산업기반 구축이 진행되고 있다. 전남 조선산업의 유연성과 불황기 대처능력을 제고하고 한국 및 전남권의 항만 개발에 따른 수리조선 수요에 대처하기 위해, 전라남도는 수리조선산업 진출을 검토하고 있는 바, 전남 지역의 수리조선 경쟁력을 분석하였다. 수리조선산업의 산업적 특정과 수리조선 수요 결정 요인을 고찰하고, 유럽, 싱가포르, 중동, 중국 등 주요 수리조선국 사례의 시사점을 토대로 전라남도의 입지 여건, 비용 및 기술력을 종합적으로 검토하였으며, 부산 등 동남권 지역의 주요 거점용 물론 전남 지역 내의 후보지에 대한 비교 분석을 수행하였다.

• Journal of Korea Port Economic Association
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• v.38 no.3
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• pp.69-86
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• 2022

This study analyses the necessity of the large-size shipyard and explores competitiveness factors of it. Furthermore, the competitiveness is evaluated and the economic feasibility of building and operation of shipyard is examined. As a result of AHP analysis of the determining factors of the competitiveness of the repairing shipyard, the importance of the factors was found in the order of arrival and departure safety, repair technology, dock and wharf facilities, repair cost, repair period (on time delivery), and repair parts supply. Moving distance, repair service quality, repair parts supply, arrival and departure safety, repair technology, dock and quay wall facilities, and repair period (on time delivery) were identified as key factors in the AHP analysis for competitiveness of the Busan Port repair shipyard to be built in the future. As a result of the analysing economic feasibility, the net present value of the Busan Port repair shipyard construction and operation investment project was KRW 435.6 billion, and the internal rate of return was 9.8%, higher than the social discount rate (4.5%), and the cost-benefit ratio (B/C) was high at 1.167. As a result of the study, the necessity and economic feasibility of the Busan Port repair shipyard are sufficiently ensured, and the competitiveness assessment was highly positive.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.396-398
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• 2022

이 연구는 초대형선 도입으로 대형선 수리 수요가 증가하고 있으며, 해상 오염물질 규제강화로 스크러버와 선박평형수처리장치를 부착하는 선박개조 시장이 확대되고 있는 상황에서 우리나라 대형 수리조선소의 건립 필요성을 고찰하고, 수리조선소 경쟁력 결정요인들을 도출하여 경쟁력을 평가하였으며, 수리조선소 건립 운영의 경제적 타당성을 검증하였다.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.1
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• pp.27-34
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• 2023

The optimal assignment problem between agents and tasks is known as one of the representative problems of combinatorial optimization and an NP-hard problem. This paper covers multi agent-multi task assignment problems with uncertain completion probability. The completion probabilities are generally uncertain due to endogenous (agent or task) or exogenous factors in the system. Assignment decisions without considering uncertainty can be ineffective in a real situation that has volatility. To consider uncertain completion probability mathematically, a mathematical formulation with stochastic programming is illustrated. We also present an algorithm by using the sample average approximation method to solve the problem efficiently. The algorithm can obtain an assignment decision and the upper and lower bounds of the assignment problem. Through numerical experiments, we present the optimality gap and the variance of the gap to confirm the performances of the results. This shows the excellence and robustness of the assignment decisions obtained by the algorithm in the problem with uncertainty.