• Journal of the Korean Society of Systems Engineering
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• v.11 no.2
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• pp.107-113
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• 2015

체계적이고 효율적인 경량전철시스템 건설 및 운영을 위해 시스템엔지니어링(SE) 기술의 적용은 필수적인 활동이 되었다. 이에 따라 사업수행과정에서 다양한 요구사항과 위험요소를 적기에 식별하고 조치하는 시스템엔지니어링 인력의 전문성이 매우 중요하게 고려되고 있다. 이에 본 연구에서는 경량전철 시스템엔지니어링 사업과 관련된 이해관계자들(획득자 및 공급자, 그리고 협력업체 등)을 위한 SE 교육교재를 개발하여 사업수행 전 및 수행과정에서 활용할 수 있도록 하였다. 교육교재는 일반(공통)과정, 수행자(실무자)과정, 심화수행자(관리자)과정)으로 구분하여 개발하였다. 이는 경량전철사업의 성공과 우수한 성과 창출을 위해 중요한 역할을 할 것으로 기대된다.

• Korean Journal of Construction Engineering and Management
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• v.10 no.2
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• pp.75-83
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• 2009

PPC stands for the percentage of weekly assignments completed. It makes it possible to improve the performance of production planning and control systems. Recently, the cases of PPC application have been increasing because PPC is easy to apply to construction site. However, to evaluate the average of PPC or analyze PPC as time passes has some problem ; if PPC is the same, the average it is evaluated equally although there are variabilities in production system. Therefore, In order to evaluate the character of PPC in process of production this paper suggests the method of the evaluating PPC by using coefficient of variability besides PPC measurement.

• Korean Journal of Construction Engineering and Management
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• v.17 no.3
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• pp.81-89
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• 2016

Under the circumstances where the profitability has become a more critical issue for general contractors, the objective of the study is to identify and discuss obstacles and their key characteristics in the construction budget estimating. Through the questionnaire survey and interviews with experienced estimators of general contractors, the study identified 18 obstacles by 6 groups. It discussed that although various obstacles exist, there are key obstacles to which general contractors should pay attention for the realistic construction budget estimating. In particular, improving subcontractors' estimating competency and incubating estimating experts are identified as the key issues to overcome obstacles in the construction budget estimating.

• Journal of the Korean Regional Science Association
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• v.31 no.2
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• pp.47-61
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• 2015

The purpose of this study to empirical analysis of the effects of distance-decay for the relocated firms in the Seoul Metropolitan Area(SMA). In addition, this study was constructed distance-decay function for the relocated firms by industrial types using a general distance-decay function. The data of relocated firms in the SMA extracted from the spatial database which was constructed in an previous research. The industrial type divided into 3 parts which are construction, manufacturing, and service. The result of empirical analysis by each industrial type of the effect of distance-decay, the explanatory power($R^2$) of the each function were all high. In the construction, the adjusted $R^2$ of the distance-decay function was 0.728, the manufacturing was 0.802 and the service was 0.812. It means the effect of distance decay for the relocated firms in construction industrial type more big than the effects of distance decay for the manufacturing and service industrial types.

• Korean Journal of Construction Engineering and Management
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• v.8 no.3
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• pp.87-96
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• 2007

Recently construction environment is being professionalized. oversized and diversified. Due to fluctuation of construction environment, the demand for the project of steel structure is ieased gradually and steel construction is needed the efficient quality management. The construction of steel structure which required a variety of sub-contractors, the progress of works and technologies are comprehensive of various risks and uncertain factors. But currently the construction of steel structure is conducted the risk management by perception and experience of constructors. Therefore, the analyzing factors of the risk and establishing the device are able to manage the quality management efficiently. In this study, we have conducted the interview of experts, polls and through the Analysis Hierarchy Process (AHP) for the scientific and systematic risk management. This paper will propose a plan for systematization of the construction of the steel structure.

• Journal of the Korea Institute of Building Construction
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• v.22 no.4
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• pp.391-402
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• 2022

With the number of social overhead capital(SOC) projects that introduce private capital on the rise, overseas construction global companies today need to establish and advance their overseas order strategies. In this context, the purpose of this study is to develop the public private partnership(PPP) capacity evaluation model for developing countries and use it for domestic overseas construction companies to establish strategies for overseas expansion. The PPP competency evaluation model analyzes the importance of PPP competency evaluation items and infrastructure environment competency evaluation items through a review of previous studies and an interview survey with overseas construction experts. Through the above analysis results and expert surveys, problems that may occur when overseas construction companies enter the PPP market were derived, and improvement measures were proposed. Countries with a high probability of overseas construction companies entering the PPP market were determined to be those that have a mature PPP system, low risk in construction, and a good entry environment with a high infrastructure market size and growth rate. In addition, a lack of PPP investment experience, the absence of information on the infrastructure environment, and a shortage of PPP experts were identified as problems when entering the overseas construction PPP market. As an improvement measure, it was suggested to enter in cooperation with domestic and foreign companies. In addition, a plan was proposed to develop a curriculum to secure experts in areas such as PPP finance and contracts and to provide PPP information for each country. These findings are expected to contribute to overseas construction companies proposing strategies for entering the overseas construction market and using them for overseas expansion strategies and policy establishment.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.2D
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• pp.259-267
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• 2008

Nowadays PMIS (Project Management Information System) based on web is widely applied to communication, collaboration and community in construction jobsite for various organization such as subcontractors, general contractor, engineering company, supervisors and client. However, individual PMIS in jobsite is prone to be troublesome issue for integration and exchange of information regarding project management in corporate and may result in conflict of data application. The main reason should be lack of information strategy plan such as company master plan for information. This research shows a critical success factor that a big construction company of Korea establishes procedure and method for information strategy plan. In addition, It is to suggest how to be implemented PMIS architecture and execute business process innovation in corporate level. This research expects contribution that many construction companies reduce mistakes to be implemented management information system and to optimize system in corporate level.

• Proceedings of the KIEE Conference
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• 2008.04b
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• pp.211-213
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• 2008

배전선로는 항상 각종 공작물과 아주 가까운 상태에서 존재하고 있어 배전선로 근접 작업 시 전력선에 근접으로 인한 섬락 또는 접촉으로 작업원이 감전 재해를 입을 수 있으며 또는 비, 바람, 조류 등에 의한 이물 접촉으로 설비 고장을 유발 시킬 수 있다. 이러한 감전재해 및 설비고장을 예방하기 위하여 22.9kV-y 전력선의 직선부분에 사용할 수 있는 직선형 방호관을 개발하여 건설현장 주변의 전력선에 방호조치 함으로서 전력선 근접 작업 시 작업종사자의 안전 확보에 이바지함은 물론 정전사고방지에도 크게 기여하여 왔다. 그러나 22.9kV-y 배전선로의 점퍼선부분과 변압기의 인상선 등 곡선으로 되었거나 구불구불한 형상으로 된 부위는 직선형 방호관으로는 방호조치가 불가능하여 산업안전보건법이 정한 산업안전기준에 관한 규칙 제327조 제2호에 의한 방호조치를 취하지 않고 근접작업이 진행되어 감전재해와 정전사고가 발생되어 왔었다. 한전에서 협력업체와 공동으로 연구개발한 소용돌이형 점퍼선방호관을 그동안 방호조치를 취하지 못한 점퍼선이나 구불구불한 전력선부위에 방호조치를 함으로서 감전재해의 예방과 정전사고 발생을 획기적으로 감소시킬 것으로 기대된다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.1
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• pp.347-354
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• 2013

In the recent global construction environment, EPC contracts that integrate planning, design, procurement, and construction have been widely used for industrial facilities. Similarly, as the importance of the engineering capability such as project management consulting(PMC) and front end engineering design(FEED) has been increased, design-build contracts also have been gradually adopted for infrastructure projects. Whereas, the Korean infrastructure industry has fragmentary features which mainly emphasize on the construction sector. Therefore, this study aims at developing strategies for enhancing the engineering capability and for balancing the competitiveness between engineering and construction sectors in the Korean infrastructure industry. To this end, the authors first carried out market analysis for both global and domestic market. Then, a structured survey and expert in-depth interviews were sequentially performed in order to reflect practitioners' perspectives and needs for institutional strategies. As a result, five strategies drawn from this study are as follows: 1) rearranging the government's roles for supporting the engineering sector; 2) establishing institutional bases being compatible with global standards; 3) fostering value-added workforce for undertaking complex tasks; 4) constructing an consortium between an engineering association and general contractors; and 5) building a nationwide collaborative networks for overseas market expansion.

• Korean Journal of Construction Engineering and Management
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• v.6 no.3 s.25
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• pp.135-143
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• 2005

The purpose of this study is to diminish the risk through identifying the risk factors occurring in the process of real estate development projects, and analyzing and coping with the risk factors, and enable stable advance in the development process by improving the roles and work distribution of the project investor. The results of this study are as follows : 1) identifying the risks of contractions from the step of selecting the sites must be made possible through supplemental human resources expertise in plan and construction of the operation 2) as an improvement scheme, heightening the penetration wall of development projects from the investors, proposing a registration law and a selection standard of construction companies to investors' cooperating companies enabling the growth of superior investors.