• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.424-426
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• 2004

As power demand increases gradually, the call for underground transmission system increases. But it is very difficult and high in cost to construct new ducts and/or tunnels for power cables in metropolitan areas. HTS (High Temperature Superconducting) cable has the several useful characteristics such as increased power density, stronger fields and/or reduced losses. Therefore HTS cable can allow more power to be moved in existing ducts, which means very large economical and environmental benefits. In these days, companies world-wide have conducted researches on HTS cable. A development project for a 22.9kV class HTS cable is proceeding at a research center and university in Korea. In this paper, we investigate the expected price of HTS cable to have a merit in viewpoint of economic aspect. First, life-cycle cost of conventional cable is calculated and based on this, the expected price of HTS cable is evaluated, which HTS cable is competitive against conventional cable.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.375-380
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• 2009

Gas & Oil plant construction projects are increasing recently all over oil-producing countries. An EPC (Engineering, Procurement and Construction) company, which participates in the plant projects, should possess pertinent engineering licenses and EPC management skills to create high added-value. Nonetheless, there exist various risks involved in the EPC life cycle process due to such characteristics of construction projects as long duration of construction time and complicated processes along with the procured goods or services subjected to various logistics. The objective of this paper is to analyze the overall EPC life cycle for proper process and to examine various information and document. Additionally, the principal data for the analysis of the EPC process are derived from personal interviews with experts and specialty contractors of the plant projects. The results of this study would be widely used as a guide for efficient and effective management of overseas gas plant projects.

• 한국건설관리학회논문집
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• 제7권6호
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• pp.165-174
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• 2006

최근 건축 리모델링은 건축물의 수명주기에 대한 관심이 증대하면서 침체된 건설시장을 활성화하기 위한 새로운 대안으로 부상하고 있다. 그러나 현재 리모델링 사업은 사업시행자의 리모델링에 대한 전반적 이해부족과 더불어 리모델링 효과, 성능에 대한 평가, 사용자 요구 반영체계의 미비, 투입된 공사비에 의한 경제적 가치상승의 타당성 분석 등 객관적 평가기준, 리모델링 주기(Remodeling Life Cycle : 기획, 타당성${\rightarrow}$설계${\rightarrow}$시공${\rightarrow}$관리)에 대한 체계적 수행절차 및 평가 등에 종합적 관리기술과 요소기술의 부재로 인하여 사업수행에 여러 가지 어려움을 겪고 있는 실정이다. 이에 본 연구에서는 현재 리모델링 사업수행에 있어서 기획단계, 설계단계, 시공단계 중 초기 기획단계를 중심으로 리모델링 사업의 업무절차 및 의사결정을 위한 분석항목 등을 제시하여 사업수행의 전반적 이해를 통해 효율적인 관리방법을 모색하고자 하였다 이를 위해 먼저 각 단계별 필요한 Input 정보를 분석하고 활용 가능한 도구(Tool)와 기술을 통해 요소 결과물(Output)을 제시하였으며, 이러한 일련의 과정에 있어서 사업 참여주체별 책임과 역할을 규정하여, 리모델링 사업의 체계적 수행 프로세스를 구축하고자 하였다.

• Journal of Information Technology Applications and Management
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• 제20권2호
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• pp.69-87
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• 2013

The expanded spiral model in this paper consists of five processes of architecture design, architectural construction, architectural maintenance, operation, and architectural management. The former four processes are executed alternatively, while the latter architectural management process is executed continuously interacting with the other processes during the whole life cycle of the system. The expanded spiral model provides a conceptual framework to sort discussions of architectural degeneration into those of product-oriented processes and those of management processes, making it possible to incorporate the models and body of knowledge about project and program management especially those of Project Management Institute, into discussions of architectural degeneration. A good architecture decomposes the software-intensive system into components mutually interacting in a well-formed structure. The architecture design process and the architectural construction process together create the object system with well-designed architecture. The architectural maintenance process prevents the implemented architecture deviate from the designed architecture. The architectural management process monitors the changes of requirements including architecturally significant requirements, supports the other processes to be executed reflecting various perspectives of stake-holders, and creates and documents the reasons of architectural decisions, which is considered as a key element of the architecture.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1106-1113
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• 2022

Cost segregation helps reduce tax liabilities by reclassifying real property to personal property and accelerates tax depreciation of a property. A typical cost segregation study requires much time and high costs. This study proposed a BIM integrated cost segregation process that can be applied to any commercial building project. The proposed BIM-based cost segregation process was verified in a new commercial construction project. It approved that this approach can: (1) increase the cash flow for the owner and provide assistance to tax-paying enterprises; (2) enable the contractor to use it as an added value in the bidding process; (3) realize data sharing in a common platform to improve the cost segregation study efficiency and reduce costs and errors; (4) contribute to the asset management in the life cycle of buildings while filling in the blank of cost segregation process. Future studies will focus on the automation of cost segregation and asset management in building construction's life cycle.

• 한국산학기술학회논문지
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• 제20권11호
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• pp.208-216
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• 2019

건설공사는 기획-설계-시공-유지관리 등 생애주기에 따라 다양한 많은 정보를 발생시킨다. 도로 등 SOC 공공건설공사는 최소 5년에서 10년이상 기간동안 공사가 이루어짐으로서 공정·공사비 등 사업이력에 대한 정보관리가 중요한 실정이다. 또한, 도로건설사업의 생애주기별 정보 관리를 통해 최초 계획했던 목표대로 공사가 수행되었는지 확인하고 유사공사에 반영할 수 있도록 건설정보의 선순환 구조체계로의 전환이 필요하다. 민간건설공사는 건설사에서 계획부터 준공까지 전반적인 정보관리를 수행하는데 반해, 공공건설사업은 각기 다른 기관 또는 부서에서 업무를 수행함으로서 정보의 통합관리가 어려운 실정이다. 특히, 공공건설 중 일반국도의 경우 건설사업정보시스템에서 건설사업정보를 관리하고 있으나, 세부시스템별로 개별 관리함으로서 정보 단절로 인해 통합적인 모니터링을 할 수 없는 실정이다. 따라서, 본 연구는 일반국도 건설사업의 생애주기별 발생 정보를 종합적으로 관리할 수 있도록 정보 통합관리방안을 제시하였다. 이를 위해 건설관련 정보시스템 현황을 조사하고, 기존 건설사업정보시스템을 분석한 후, 표준화 절차에 따라 용어, 단어, 도메인을 정의하였다. 그 결과, DB 표준화에 따라 세부시스템의 DB를 통합하고 개별 관리되던 사용자정보를 통합하며 디브레인과의 연계를 통해 사업예산 기반의 정보관리가 이루어질 수 있도록 정보시스템을 개선하였다.

• 대한조선학회논문집
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• 제42권6호
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• pp.673-678
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• 2005

IMO adopted ' International Convention for The Control and Management of Ships' Ballast Water and Sediments ' on February 13th 2004. According to this convention, a ballast water treatment system should be installed in all ships obligatorily up to a standard date. When the system is installed, economic propriety should be considered. The economic propriety analysis examines the profit of a relevant project which can be presented by a equation, (Profit) = (income) - (expense) - (tax). However, the ballast water system is not for the profit during the life cycle but for the satisfaction of the regulation. Therefore, the expense should be minimum against the profit. This study presents the LCC(Life-Cycle Cost) analysis for economic evaluation of several ballast water system of foreign products.

• 기술혁신연구
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• 제2권1호
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• pp.256-276
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• 1994

This paper aims at identifying the desirable R'||'&'||'D life cycle related to government-industry cooperative R'||'&'||'D. It is based on a case study associated with the relationship between cooperation and cooperation in information in information communications sector. It presents three types of R'||'&'||'D life cycle to achieve a technological enhancement as high as possible with limited resources. The first case of R'||'&'||'D project is of "advanced type". In the generic technology phase, government takes a leading role jointly in R'||'&'||'D activities, but, in after the applied research phase, the domestic firms take the lead. This kind of cooperation can be made when competition between domestic firms is highly intense, and the technological knowledges of participating firms are at internationally competitive levels. The second type of "less-advanced type"; the firms of a country(more often a small country) lag behind in technology level, and the penetration of foreign firms in the market is limited. In this case, government takes full charge of R'||'&'||'D activities up to the applied research phase, due to the low technology level and insufficient financial resources of private firms. Lastly, this paper presents and R'||'&'||'D life cycle of "strategic" type. This applies to the case in which domestic firm with less financial resources make an attempt to increase their technological knowledges while the government, in turn, contributes to strengthen the international competitiveness of domestic industry.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1189-1194
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• 2009

A gutter-shaped U grating is a facility that is installed at the sides of a road to provide pedestrians with a rainwater-free road. The previous studies on this facility focused mainly on the progress of the efforts that are being made to improve its performance and interception efficiency so as to prevent damages in regional areas due to the heavy rains caused by climate change. The studies on its maintenance, however, are still inadequate. Therefore, this study was conducted to analyze and compare the life cycle costs and performance evaluations of the steel and magic gratings, which are installed in apartments. The results of the study show that the replacement period and rate of gratings differ depending on where they are installed. The initial capital investment cost of a magic grating installed at a road where many vehicles pass is quite high, but in terms of its maintenance and entire-life-cycle costs, its total expenses are lower than those of a steel grating. The results of this study are expected to serve as preliminary data for the selection of an adequate grating that is suitable for particular places in the design phase of construction projects.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.551-562
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• 2022

The building production system has been analysed by the dichotomy "employer-contractor" relationship, which failed to take into account of the role and function of multiple stakeholders within the life-cycle supply chain. This is further observed in the current conflict resolution model, which, in my argument, struggles to contribute to industrialize the building production and achieve better efficiency and effectiveness as expected. The purpose of this paper is to critically assess the issues of current programme-based conflict resolution model, and discuss alternative models how they can be modelled and applied to the construction projects. The conclusions of findings are; First, the current model is framed around the contracts and dispute resolutions based on the legal concept of "claimant and respondent" where one party(s) advances a claim once and the other(s) objects, as such it fails to reflect the nature of construction projects where multiple stakeholders are involved concurrently and for a long period of life-cycle of buildings. Second, an alternative is "Six-stakeholders model" which represents the multiple stakeholders and clarifies the flow of obligation-liability-monetary relationships among participants for a long period of life-cycle of buildings. Further, with reference to both historical and recent cases, a reflection and insight into pros and cons of programming method is added, especially as to why this method is considered to have become a mandate of the modern construction management, and how academics and practitioners should deal with it more cautiously and prudently.