• 해양환경안전학회지
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• 제16권1호
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• pp.115-123
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• 2010

본 연구는 부산의 지역해양산업의 육성과 지역경제 활성화 차원에서 해양산업박람회의 개최 논리와 효과적인 실행 방안을 구상하고자 했다. 본 연구가 다루고자 하는 해양산업박람회는 기존의 모든 해양산업들을 포괄하는 종합전시회로서의 위상과 의미를 담고 있다. 그러므로 향후 부산에서 진정으로 개최되어야 할 박람회는 해양산업박람회가 되어야 한다는 연구의 취지와 목적을 가지고 있다. 이러한 취지와 목적에 도달하기 위해 본 연구에서는 순차적으로 부산의 해양산업 환경과 비중을 검토하고, 기존 전시회의 현황과 문제점을 살펴본 다음, 해양산업체에 대한 의견조사를 통해 해양산업박람회의 합리적인 개최논리와 방안을 결론으로 제시하였다.

• 한국항해항만학회지
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• 제37권6호
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• pp.627-635
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• 2013

본 연구의 주제는 우리나라 제1의 항만이자, 해양수도인 부산시를 대상으로 해항도시(sea port city)의 경제성장에 영향을 미치는 해양산업(ocean industries)의 장기적인 효과 및 그 주요 요인을 분석하는 것이다. 즉 수산업, 해운항만산업, 해양관광산업, 조선업 등 해항도시의 다양한 해양산업이 그 도시의 경제성장에 어떠한 영향을 미치는 지를 부산시를 대상으로 심층 연구한다. 이를 위해 해항도시의 경제성장과 각 영향변인들에 관한 논거를 살펴보고, 다시 이를 토대로 수산, 해운항만, 조선, 해양관광, 도시재정, 인구, 정치 등에 관한 변수를 설정하여 연구를 수행하였다. 주요 연구결과는 다음과 같다. 첫째, 해항도시 부산의 사례에서 해양산업이 도시의 경제성장에 미치는 효과는 상당한 수준으로 나타났다. 둘째, 수산업, 해운항만산업, 조선산업, 해양관광산업 등 연구대상으로 삼은 모든 분야의 해양산업이 해항도시의 경제성장에 영향을 미치는 것으로 나타났다. 단, 도시경제성장에 대해 해운항만산업과 해양관광산업 및 조선산업의 활성화는 긍정적인 영향을 미치는데 반해, 수산업의 활성화는 부정적인 영향을 미치는 것으로 나타났다. 이러한 점들은 우리에게 해항도시에 대한 해양산업의 경제적 기여를 새롭게 인식하도록 만드는 동시에, 향후 정부가 해양산업에 관한 주요 성장동인을 발견할 수 있도록 하는 여러 정책적 시사점을 제공하였다.

• Journal of Advanced Research in Ocean Engineering
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• 제1권2호
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• pp.134-147
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• 2015

This study proposes a method to determine the effective angular velocity of each motor of a specific four-rows tracked vehicle (FRTV) in order to follow a given turning radius. The configuration of the four-rows tracked vehicle is introduced, and its dynamics analysis model is built using the DAFUL commercial software. The soil has been assumed to be hard ground, and the friction force between the ground and the tracked links is calculated using the Coulomb friction model. This paper uses a simulation to show that the error in the position increased with respect to the angle of the curvatures, so a method is proposed to compensate for the error in the motion of the motors. Various simulations are then carried out to verify the proposed formulation. The effects of the soil characteristics and the driving velocity will be further investigated in future studies.

• 한국해양공학회지
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• 제19권4호
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• pp.15-20
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• 2005

This paper presented the development of a new experimental and numerical technique for the investigation of slamming impact. The in-house code was developed, based on the boundary element method. The application of commercial code was attempted using FLUENT. Pneumatic cylinder and LM-guide were introduced to closely simulate the free fall phenomenon. It was demonstrated that the proposed experimental and numerical studies can be useful tools in investigating slamming phenomenon.

• Smart Structures and Systems
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• 제15권2호
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• pp.315-334
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• 2015

A main goal of this study is to propose a damage detection technique to detect and localize damages of a top-tensioned riser. In this paper, the top-tensioned finite element (FE) model is considered as an analytical model of the riser, and a vibration-based damage detection method is proposed. The present method consists of a FE model updating and damage index method. In order to accomplish the goal of this study, first, a sensitivity-based FE model updating method using natural frequencies and zero frequencies is introduced. Second, natural frequencies and zero frequencies of the axial mode on the top-tensioned riser are estimated by eigenvalue analysis. Finally, the locations and severities of the damages are estimated from the damage index method. Three numerical examples are considered to verify the performance of the proposed method.

• 대한조선학회논문집
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• 제47권2호
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• pp.225-232
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• 2010

The requirement of design of High-Pressure/High-Temperature(HP/HT) pipelines on an seabed increases in recent years. The need of research on the analysis method to improve the design capacity is increasing. The purpose of this study is the development of the analysis method of thermal buckling of subsea pipeline structures. The analysis method of thermal buckling was established by using the commercial FEM code(ABAQUS) which shows the outstanding performance in non-linear static FE analysis. The developed method has been applied to the installation of subsea pipeline on the offshore project. For a validation, the comparative study has been carried out. This application to offshore project demonstrates the superiority of the analysis method of thermal buckling of subsea pipeline structures and testifies the application to detail design.

• 한국해양공학회지
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• 제20권1호
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• pp.37-42
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• 2006

In the ocean engineering field, information about the ocean environment is important for planning, design, and operation, especially the wave information. High precision wave data is also important for considering environmental problems, like efficient operation of ships. For this purpose, many methods were considered in the past. However, an on-board directing wave measurement system has not been incorporated. The use of conventional marine radar Plane Position Indicator (PPI) images allows the estimation of wave information on a real-time basis, using both space and time information, regarding the evolution of ocean surface waves. In order to achieve data acquisition, the Radar Scan Converter (RSC) has been developed. Three-dimensional analysis was performed. The comparison of wave information derived from this system, and that of wave buoy, shows that this wave field detecting system can be a useful tool.

• 한국산업융합학회 논문집
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• 제22권6호
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• pp.785-795
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• 2019

This paper is a study on the modeling of the quantity estimation model for offshore plant Material handling equipment in FEED(Front End Engineering Design) verification stage using system engineering approach which is an engineering design methods. The relevant engineering execution procedure is not systemized although the operation method and Material handling equipment selection with weight and space constraints is a key part of the FEED. Using the system engineering process, the stakeholder requirements analysis process, the system requirements analysis, and the final system architecture design were sequentially performed, and the process developed through the functional development diagram and Requirement traceability matrix (RTM) was verified. In addition, based on the established process, we propose a Material handling quantity estimation model and Quantity calculation verification Table that can be applied at the FEED verification stage and we verify the applicability through case studies.

• 산업경영시스템학회지
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• 제38권1호
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• pp.52-64
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• 2015

Korea ocean research stations manage the weather and environmental data collected from coastal and ocean areas to provide short-term and long-term ocean forecasts. The purpose of this paper is to analyze and quantify economic benefits of the ocean research stations with sensors to observe physical, chemical, and biological data. The construction and operation of an integrated ocean observation station is expected to reduce uncertainty about ocean and coastal areas and to improve the quality of ocean forecasts. The economic benefits are mainly come from improved search and rescue operations, ocean pollution management, yellow dust management, and improved productivity in ocean-related industries. In addition, an input-output analysis is performed to evaluate the economic impacts of ocean research stations nationwide. The analysis shows that the system can contribute to industries such as fishing, maritime and air cargo, medical and health care.

• Journal of Ship and Ocean Technology
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• 제11권2호
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• pp.34-45
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• 2007

Environment of marine transportation market is changing rapidly. Due to globalization of world economy, marine transportation of cargos, especially trade using container boxes, is increasing dramatically. Fierce competition in the global market of container transportation forces the shipping industry to seek the economy of scale to reduce transportation cost, and drives the merge and alliance of liner shipping companies. Mega-sized container ships, having capacity over 10,000 TEU, were introduced, and appeared recently, in order to reduce the unit transportation cost. Korean shipping and shipbuilding companies are competitive, and have considerable market share in the global market. Even though both industries are inter-connected through ships and have many common interests in order to enlarge the global market share, inter-relation between two industries is surprisingly insignificant. In this paper current issues in the process of environmental change of marine cargo transportation are reviewed, and inter-relation of shipping and shipbuilding industries is discussed. Suggestions for inter-related development of Korean shipping and shipbuilding industries are given, and means for mutually beneficial collaboration are suggested.