• Title/Summary/Keyword: techniques life cycle

검색결과 193건 처리시간 0.034초

시스템엔지니어링 기법 적용에 따른 경량전철 전기시스템의 생명주기비용 절감에 관한 연구 (A study on the Life Cycle Cost reduction of the LRT's power systems based on the advanced Systems Engineering)

  • 최원찬;배준호;허재훈;주지영
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2011년도 춘계학술대회 논문집
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    • pp.1434-1439
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    • 2011
  • The purpose of this study is based on the optimize the system life cycle cost apply to the advanced systems engineering techniques consideration thought to the system life cycle for the power system which is the one of the major component of the light rail transit system. Generally, the systems engineering techniques apply to the LRT's power systems are not optimize the whole life cycle cost of the power systems because systems engineering management activities are concentrate in performing the key-technology oriented at the construction stage of the dedicated power systems for light rail transit. Through this study, All the stakeholders can be utilize a this advanced systems engineering techniques which is fully considered the life cycle cost through the considering in whole system life cycle (such as concept, design, operation, maintenance and dispose stage as well as construction stage) and adopted by KSX ISO/IEC 15288 system life cycle processes.

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도시철도 차량에서 수명주기비용의 검증 (Verification of Life-Cycle Cost for the Urban Railway Vehicle)

  • 정광우;전영석;안준용;김철수;정종덕
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2009년도 춘계학술대회 논문집
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    • pp.636-642
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    • 2009
  • The application of LCC-techniques is being introduced at the on-going procurement programs of various techniques. LCC-techniques have the common characteristic that all are designed to motivate contractors to design, manufacture and deliver equipment with lower life cycle costs. You may believe that savings may be in the acquisition cost component of life cycle costs. However, primary emphasis is generally on reducing and controlling operating and support costs by transferring more responsibility to the contractor for equipment operating and support cost performance. It has been found that life cycle cost procurement provisions must be individually tailored to each program. In this study, the currently identified LCC procurement techniques including a variety of LCC incentive provisions are introduced. Moreover, verification method, a procedural issue and incentive to application of LCC-techniques are examined.

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Essence Applicability Matrices for the Reduction of Project Cycle Time

  • Hong, Tae Hoon;Son, Jae Ho
    • Architectural research
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    • 제8권1호
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    • pp.57-68
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    • 2006
  • Global competition and reduced project life cycle ultimately puts greater performance requirements on the capital project delivery systems used to maintain competitiveness. Despite continuing improvements in delivery cycle time, business owners of facilities continue to demand greater improvements in project delivery cycle time. Therefore, it is very important to investigate the various techniques and methods leading to reduction in project cycle time and also identify the applicability of identified techniques and methods. This paper introduces reduction techniques identified through literature review (i.e, Schedule Reduction Techniques (SRTs), Management Techniques (MTs), and Construction Institute Industry (CII) Best Practices (BPs). In order to collect applicability of these techniques under different project phases (Pre-project planning (PPP), Design (D), Material Management (MM), Construction (C), and Start-up (SU)), the Essence Applicability Matrices (EAM) is used.

전력시설물에 대한 VE 와 LCC기법 도입에 관한 연구 (Report on VE & LCC (Value Engineering, Life Cycle Cost) Technics Introduction about the Electric Power Equipment)

  • 김상직;장우진
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2003년도 학술대회논문집
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    • pp.81-86
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    • 2003
  • 최근 대형 전력시설물에 대한 VE 와 LCC 기법의 도입은 여러 가지 형태로 수행되고 있으며, 일반적으로 전력 시설물의 비용을 생각할 때 그 초기투자비만을 대상으로 평가하는 경향이 있으나, 시설물의 총 생애비용 (보전비, 수선비, 개선비, 운용비, 전력비등)을 동시에 고려하여야 한다. 본 연구에서는 간선설계에서 장거리 급전시 전압강하로 인한 동손비를 고려한 설계기법과 내구년한에 따른 총생애비용기법을 적용하여 타당성을 입증하였다.

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K-1 전차의 경제 수명 결정에 관한 연구 (A Study on Determination for An Economic Life-cycle of the K-1 Tank)

  • 문형선;김충영
    • 한국국방경영분석학회지
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    • 제23권1호
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    • pp.138-150
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    • 1997
  • The life-cycle of the K-1 tank has been 10 years simply applying that of the U.S. M-1 tank. Therefore, this paper is focused on determination of an economic life-cycle for the K-1 tanks. The current operation cost is adjusted by interest rate and the depreciation cost is applied in this study for more reliable estimation of the life-cycle cost. The Equivalent Annual Method is utilized and then various regression techniques are applied for deriving an effective economic life-cycle. The economic life-cycle of the K-1 tank results in 13 years in this study. considering 95% confidence interval, the life cycle of the K-1 tank is between 10.5 years and 15.5 years.

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Modeling and Evaluating Inventory Replenishment for Short Life-cycle Products

  • Wang, Ching-Ho;Lint, Shih-Wei;Chou, Shuo-Yan;Tsai, Chun-Hsiang
    • 대한산업공학회지
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    • 제34권4호
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    • pp.386-397
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    • 2008
  • Due to the rapid advancement of technologies, a growing number of innovative products with a short life-cycle have been introduced to the market. As the life-cycles of such products are shorter than those of durable goods, the demand variation during the life-cycle adds to the difficulty of inventory management. Traditional inventory planning models and techniques mostly deal with products that have long life-cycles. The assumptions on the demand pattern and subsequent solution approaches are generally, not suitable for dealing with products with short life-cycles. In this research, inventory replenishment problems based on the logistic demand model are formulated and solved to facilitate the management of products with short life-cycles. An extended Wagner- Whitin approach is used to determine the replenishment cycle, schedules and lot-sizes.

신뢰성, 보전성 및 가용성 적용 모델 (Application Guide of Reliability Maintainability and Availability)

  • 최성운
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2007년도 춘계학술대회
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    • pp.309-322
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    • 2007
  • This paper shows application guide of dependability data from the field, life cycle costing, and maintainability. Moreover, this study introduces mathematical expressions and predictions for reliability, availability and maintainability. This paper also shows compliance test procedures for steady-state availability, and application of Markov techniques.

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우주발사 시스템 개발을 위한 통합 기술관리 시스템 소개 (Introduction of Program Life-Cycle Management System for Space Launch System Development)

  • 조미옥;조철훈;이준호;오범석;박정주;조광래
    • 시스템엔지니어링워크숍
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    • 통권4호
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    • pp.86-89
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    • 2004
  • A web-based program life-cycle management(PLM) system is introduced to implement the system engineering processes and to provide the development teaceability online. This information system aims for the realization of essential system engineering management techniques currently applied to the space launch system development program including management of configuration and data based on the work breakdown structure(WBS), WBS, bill of materials and properties. The system enhances communication and gives access to the development data with relevant information such as data-to-data relation and approval status/history through the web, and preserve all of the development data throughout the program life-cycle. Further improvement of the system is planned to implement the program managrment pricesses and to provide integrated information useful for the programmatic decision making.

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우주 발사 시스템 개발을 위한 통합 기술관리 시스템 소개 (Introduction of Program Life-Cycle Management System for Space Launch System Development)

  • 조미옥;신명호
    • 시스템엔지니어링학술지
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    • 제2권1호
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    • pp.48-53
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    • 2006
  • A web-based program life-cycle management(PLM) system is introduced to implement the system engineering processes and to provide the development traceability online. This information system aims for the realization of essential system engineering management techniques currently applied to the space launch system development program including management of configuration and data based on the work breakdown structure(WBS), WBS, bill of materials and mass properties. The system enhances communication and gives access to the development data with relevant information such as data-to-data relation and approval status/history through the web, and preserve all of the development data throughout the program life-cycle. Further improvement of the system is planned to implement the program management processes and co provide integrated information useful for the programmatic decision making.

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Effluents from copper industry: Improvised techniques

  • Duraisamy, Sankar;Saminathan, Rajagopal;Narsimman, Deepa
    • Membrane and Water Treatment
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    • 제6권2호
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    • pp.103-112
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    • 2015
  • In India, recycling of treated effluent plays a major role in the industry. Particularly in copper industry, recycling techniques for treated effluents adopt conventional technologies which are not energy efficient and recovery of high quality process water, free flowing salts and sludge's is very low. This paper presents an overview of enhanced modern technology for treated effluents in copper industry making it more efficient with high recovery of high quality process water and free flowing salts. Life cycle cost (LCC) would be 15-20% lower than the conventional technologies. The conventional technology can be replaced with this proposed technique in the existing and upcoming copper industries.