• Journal of Advanced Marine Engineering and Technology
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• v.33 no.1
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• pp.28-36
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• 2009

In this paper, based on the measured data of hull deflection, an approximated hull deflection curve is drawn using reverse analyzed hull deflection data and the estimation method for flexibility analysis of shaft alignment is proposed by use of the approximate hull deflection curve. Generally an offset value of after stern tube bearing is a datum point with an fore stern tube bearing however the shaft alignment has a tendency which is able to get higher flexibility if the shafting system has the deflection value from after stern tube bearing as reference to bottom direction according to results of on this study. By applying this result of study, the shaft alignment for next similar ships will be able to estimate how to follow the hull deflection and how to be influenced by hull deflection at shaft alignment analysis state using the approximated hull deflection curve.

• Journal of Advanced Marine Engineering and Technology
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• v.25 no.5
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• pp.1058-1064
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• 2001

In this paper, the development of probability distribution estimation program for fatigue crack growth lives was summarize. The probability distribution estimation program of life was developed to increase the reliability of life estimation. In this study, it is considered that the cause of scatter in fatigue crack growth data is due to material inhomogeneity. The material resistance to fatigue crack growth is modelled as a spatial stochastic process, which varies randomly along the crack path. We developed the GUI program to estimate the probability distribution and reliability using the non-Gaussian stochastic process method. This program can be used for the reliability assessment.

• 전기의세계
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• v.41 no.9
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• pp.23-37
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• 1992

본 고에서는 분산제어 시스템의 일반적인 요건 및 기능, 시스템 구조에 대하여 정리해 보고, 발전소용 분산제어 시스템으로써 국내 최초의 개발품이 될 KEDIC 시스템의 구성과 기능들을 살펴본 후 선진제품과 대등한 수준 더 나아가 앞서 수준으로 가기위해 노력해야 할 향후 과제들을 설정해 보았다. 기술 대형화 및 종합화 측면에서 분산제어 시스템의 기구 기술, 아날로그 및 디지탈 하드웨어 기술, 현장의 엔지니어링 기술, 프로세스 제어기술, Field Bus 및 LAN(Local Area Network)등의 통신기술, GUI로 대표되는 MMI(Man-Machine Interface) 기술, 기타 소프트웨어적으로 현장 데이타 및 운전 지원 데이타 관리에 필요한 데이타베이스 관리 기술과 실시간 처리기술 등이 통합되어 있다. 따라서 요소기술의 확보 혹은 기술 수준의 향상에 꾸준한 관심을 기울여야 함은 물론이거니와 무엇보다도 요소기술 변화에 대응할 수 있는 시스템 통합기술력 배양에 노력을 기울여야 할것이다.

• Journal of Ocean Engineering and Technology
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• v.10 no.4
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• pp.51-57
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• 1996

A standard method for the evalution of the fracture toughness of the high polymer materials has not been fully developed in comparison with that for metallic materials, and has not yet established. In this paper, fracture toughness tests using polycarbonate specimens were carried out. The fracture thughness tests using polycabonate specimens were carried out. The fracture toughness of commercial polycarbonate were dependent on the specimen thickness. The specimen thickness is necessary above 8mm to obtain the valid $K_{IC}$. A cumulative counts were slightly dependent on specimen thickness.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.204-209
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• 2006

Despite the recent depression of the construction industry, overseas plant market especially Middle East plant market is booming owing to the high oil price. Since many Middle Eastern countries are placing orders of big scale projects based on the high oil price, Korean EPC contractor are trying to get over the depression through theses plants. Presently, since the plant market is in prosperous condition in general, it is not hard to get overseas orders; however the original licenses that requirehigher technology and high added values are exclusive for advanced engineering companies which great difficulty is predicted for developing countries like us to join the crowd. Therefore, the objective of this study is to propose establishment of material management system on the filed to gain optimized effect of material management in connection with procurement system that all the procurement related personals execute tasks in advanced level by systemizing the task operation within the knowledge and task ability in time for plant construction procurement as a method to strengthening the competitiveness of Korean companies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.718-724
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• 2017

Considerable efforts have been made to expand the boundaries of domestic offshore plant industries, which have focused on the construction of the structures, to the engineering field. On the other hand, time domain analysis, which is one of the most important areas in designing floating offshore plants, relies mainly on the information given by foreign companies. As an early design of the Dynamic Positioning System (DPS) is mostly conducted by several specialized companies, domestic ship builders need to spend time and money to reflect the analysis into the hull shape design. This paper presents the framework required to analyze time domain performance of floating type offshore structures, which are equipped with DPS. To easily perform time domain analysis, framework generates the required input data for the solver, and is modularized to test the control algorithm and performance of a certain DPS. The effectiveness of the developed framework was verified by a simulation with a model ship and the total time for the entire analysis work was reduced by 50% or more.

• KDI Journal of Economic Policy
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• v.17 no.1
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• pp.3-49
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• 1995

한국경제의 선진권진입(先進圈進入)은 국민이 선진국의 생활수준을 향유할 수 있는 국가경쟁우위(國家競爭優位)의 확보를 의미한다. 국가경쟁우위를 확보하기 위해서는 (1)국내기업의 핵심역량(核心力量)이 배양되고 과학기술하부구조(科學技術下部構造)가 확충되는 등 지식집약산업의 중추기능(中樞機能)이 집적되어야 하고, (2)정보공유(情報共有)와 공동학습(共同學習)을 실현하는 혁신주체간의 네트워크도 형성되어야 한다. 세계기업(世界企業)을 지향하는 국내기업들이 90년대에 무형경영자산(無形經營資産)에 대한 장기투자를 확대하기 시작하여, 2000년대에는 핵심역량의 축적이 가속될 것이며, 2010년대에는 한국계 다국적기업 중에서 기업내(企業內) 세계분업(世界分業)을 전개하는 초우량기업(超優良企業)이 나타날 것이다. 2010년대에는 초우량기업을 중심으로 연구개발(硏究開發)네트워크와 생산분업(生産分業)네트워크가 구축되고 과학기술하부구조가 확충되는 등 세계기업이 고부가활동(高附價活動)(상품기획 연구개발 엔지니어링 등)을 배치하는 입지조건(立地條件)이 구비될 것이다. 특히 차세대(次世代) 원천특허기술(源泉特許技術)의 확보를 위한 기초 응용연구의 국내기반도 확충될 것이다. 중소기업분야에서도 지식집약화에 경영자원을 집중적으로 투입하면서 세계시장을 대상으로 입지를 선정하고 네트워크를 활용하는 것이 보편화될 것이다. 중소기업의 조직화(組織化) 공동화(共同化)를 통하여 지식집약화와 세계화에 요구되는 경영자원의 축적이 가속되고 기능적 상호보완으로 혁신활동(革新活動)의 상승효과(相乘效果)를 증폭시키는 네트워크의 형성도 촉진될 것이다. 중견 중소기업의 업종은 특정지역에 군락(群落)을 이루고 기능(機能)의 집적(集積)과 네트워크의 형성을 통하여 지역산업(地域産業)으로서 세계시장에서 경쟁우위를 확보하게 될 것이다.

• Journal of Advanced Marine Engineering and Technology
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• v.36 no.8
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• pp.1143-1150
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• 2012

This paper reviewed the general definition and role of salvage duty, and performed competency analysis based on the present state of ROK Navy's and Korean civilian's salvage operation. Also, to enhance the national salvage ability, the salvage system of advanced maritime nations such as America, Great Britain were studied. Putting these information together, it is concluded that for the expansion and development of Korean salvage system, the nationally combined salvage assets must be utilized for civilian salvage operations and internationally recognized diving certification system should be introduced and joint organization of civilian-government-Navy should be established to enable the execution of such plans.

• Korean Journal of Construction Engineering and Management
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• v.7 no.3 s.31
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• pp.65-75
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• 2006

Emerging trends regarding USFK(United States Forces, Korea)'s EC(Engineering/Construction) market include: (1) introduction of MATOC(Multiple Award Task Order Contract); (2) increase of DB(Design-Build) contract; and (3) encroachment of large US-origin private EC firms upon Korea. This study analyzes the change of USFK's EC market with focus on the change of construction management actors for USFK's EC projects. Specifically, USFK's EC projects have been managed by FED(Far East District). Recently, however, the large US private EC companies substitute the role previously taken by FED. This phenomenon is accelerated by the business chances in Korea due to LPP(Land Partnership Plan) and intentions of US Government to save military construction costs by means of utilizing US private EC companies. The large US EC firms entering into Korea are business opportunities as well as challenges to Korean EC firms, which are contracting USFK's EC projects. This study concludes that, through teaming joint venture with the large US EC firms, the market changes can be opportunities to acquire foreign market information and learn advanced construction management skill from them.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.624-627
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• 2006

This study is to establish the direction to produce owner's basic specifications (English version) necessary for producing project specifications available internationally in the projects to develop water resources. The principal conclusions of this study are as follows; (1) The original text necessary for producing the international owner's basic specifications should be specifications of one part between northern America and Europe. (2) The work break down structure of the international owner's basic specifications shall be conform to the international break down structure of specifications, and the MasterFormat(2004) of CSI is recommended. (3) The construction management methods, for example, as to standards, laws, and etc. in the international owner's basic specifications should be available internationally.