• 제목/요약/키워드: preliminary estimating

검색결과 121건 처리시간 0.026초

정보화 사업의 편익 추정 프레임워크 개발 : 정보화부문 예비타당성조사를 중심으로 (Development of a Framework for Estimating the Benefits of IT Projects : Focusing on Preliminary Feasibility Study)

  • 이충훈
    • 한국IT서비스학회지
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    • 제17권3호
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    • pp.101-115
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    • 2018
  • In order to promote the IT business efficiently, the Preliminary Feasibility Study has been conducted since 2004. It is to verify the feasibility of a large-scale IT project in advance and to determine whether to reflect the budget. It is more difficult to analyze the benefits of the IT project than other projects, because the IT project is carried out by combining tangible and intangible assets and human resources. For this reason, the Standard Guideline for Preliminary Feasibility Study in the IT field suggests a framework to support in estimating the benefits of the IT project. However, it includes the following problems : 1) level discrepancy among the benefit categories, 2) lack of types of benefit items, 3) no consideration of benefit inducing factors. So the framework is facing a low utilization. This study develops a new framework through a three-step research process. The new framework can be used not only for preliminary feasibility studies but also for estimating the benefits of general IT projects.

WEB FRONT-END COMPUTING RELATIONAL DATABASE SYSTEM FOR ITEM-LEVEL PRELIMINARY HIGHWAY COST ESTIMATES

  • Jui-Sheng Chou ;James T. O'Connor ;Khali R. Persad ;Wai Kiong Chong
    • 국제학술발표논문집
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    • The 1th International Conference on Construction Engineering and Project Management
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    • pp.509-514
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    • 2005
  • In recent years, use of the web technologies and on-line process has immensely swapped single-user platform practice. This study attempted to develop preliminary cost estimating program by means of Web technologies based on statistical modeling results. A prototype Web-based Preliminary Item-Level Cost Estimating System (WBPILCES) using open source software was developed as an on-line estimating tool in this research. The primary objective is to study the possible flexibility of implementing a centralized information system that will be maintained by the Texas Department of Transportation (TxDOT) IT division. The full-scale deployment of proposed information architecture is expected to seamlessly integrate with legacy database system currently used by TxDOT so as to streamline data storage, cost growth tracking and estimates documentation.

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투자타당성검토와 예비견적 (Research for Investment Validity and Preliminary Estimating)

  • 이근희;박상민
    • 산업경영시스템학회지
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    • 제11권18호
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    • pp.1-5
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    • 1988
  • In this study we have provided one solution to overcome mistakes with limited technical staffs, capitals and times may be the computer for cost estimating. In view of the speed and the ability to draw on funds of information, we shall see that computer estimating models will become the exhibited and the accepted norm of operation by continuous research. Therefore, the computer is broadly serving the needs of many engineering disciplines and in the area of engineering design and industrial application, inexhaustible developed softwares are presented more easy speed and various application for Cost Engineering.

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통계적 접근법에 의한 선박 중량추정 방법 개발 (A Development of the Ship Weight Estimating Method by a Statistical Approach)

  • 조용진
    • 대한조선학회논문집
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    • 제48권5호
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    • pp.426-434
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    • 2011
  • Accurate weight prediction methods are an essential of the ship design in both ship cost managements and performance satisfactions. When no parent or similar ships are available, an adequate method of the ship weight estimating is required. In this study, there was carried out to develop the ship weight estimating method for the preliminary design phase. The weight estimating methods were first surveyed by the references and summarized their characteristics. The weight estimation method by statistical approach was developed for the container ship because the containerized transportation markets is gradually growing and ship's size and loading capacity are rapidly enlarged. The correlation analysis and the multiple regression analysis were used for developing the weight estimating method. As a results of evaluating the developed method, the error ratio of the variation between estimated weight and ship's data was about 5%. And it was only 1% difference with the calculating weight of conceptual design results by shipyard design team that the estimating weight of ultra-large container ship was predicted by the developed method.

다수의 광대역 신호의 입사각 추정을 위한 이차원의 정응선형예측 알고리즘 (Adaptive Two Dimensional Linear Prediction Algorithm For Estimating Incident Angles of Multiple Broadbamd Signals.)

  • 김태원
    • 한국음향학회:학술대회논문집
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    • 한국음향학회 1987년도 학술발표회 논문집
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    • pp.61-65
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    • 1987
  • An algorithm for estimating incident angles of multiple broaband signals is proposed. The method adopts semicausal model for two dimensional linear prediction filter coefficients such that the arithmatic averag of the mean squared values of the forward and reverse prediction arrors is minimized. Preliminary results demonstrating the performance of the proposed method are presented. Simulation results indicate that the performance depends on signal-to-noise ratio and prediction order in spatial demension.

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프로젝트견적(見積)과 한계분석(限界分析) (Project Estimating and Marginal Analysis)

  • 박상민
    • 품질경영학회지
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    • 제14권2호
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    • pp.40-46
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    • 1986
  • The decision maker has the job of torecasting capital investments and operating expenses to aid the decision making in choosing and evaluating present and future alternatives. The estimating function eventually analysis, evaluates and choose the alternatives. The analysis stemmed originally from a preliminary design of some sort, and eventually plans are started to investigate investment possibilites. This study provide the descounted cash flow and the present worth method. Despite any choice of an analytical method, there remains the problem of predicting certain future events. Therefore, these models dealing with optimum plant sizing, equipment replacement, and lease or buy will be discussed.

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Preliminary results of 86 GHz GMVA observations on AGN

  • 오정환
    • 천문학회보
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    • 제38권1호
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    • pp.44.1-44.1
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    • 2013
  • We present the preliminary results from 86 GHz GMVA observations on 2 AGN - 0954+658 and 0716+714. The observation was taken with the Global mm-VLBI Array in Oct. 2010, with dual polarization mode. The aim of the observation is to produce the polarization maps of the sources, with the Stokes parameters - I, Q, U and V. The final results will be used for estimating the strength of the intrinsic magnetic field and the geometries of AGN jets.

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건축 구조체 공사비 산정모델 개발을 위한 데이터 분석 - 공공청사를 중심으로 - (Analyzing Data for Development of Structures Cost Estimating Model - Focused on Government Building Project -)

  • 김수민;조재호;이종식;전재열
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2008년도 정기학술발표대회 논문집
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    • pp.212-215
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    • 2008
  • 건축공사의 공사비 절감은 시공단계보다 사업초기단계 및 설계단계에서 정확한 공사비 예측을 함으로써 더욱 효율적으로 절감될 수 있다. 하지만 현행 공공 건설공사의 공사비 산정 및 관리는 실시설계 이후로 집중되어 있어, 계산견적을 중심으로 실시되는 기획 및 기본설계단계에서의 사업비관리는 매우 취약하다고 볼 수 있다. 이에 본 연구에서는 현행 공사비 산정 방법의 문제점 및 실적공사비 사례정보 분석하여 기본설계단계에서 구체적 비용 계획을 세우고 이에 부합되는 설계가 진행되는지 검토 가능한 공사비 산정모델 개발을 위한 예비적 연구를 수행하였다.

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복합용도 개발 도시재생 사업에서의 단위 공간 기반 개산견적 모델링 가이드 제안 - ○○시 ○○역 복합환승센터 사례를 중심으로 - (A Proposal of Modeling Guide of the Unit Space-based Preliminary Cost Estimation in Urban Renewal Mix-Used Development - Case Study on ○○ Transfer Station Complex -)

  • 강신엽;안재홍;김주형
    • 한국BIM학회 논문집
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    • 제3권1호
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    • pp.11-20
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    • 2013
  • Mix-used development in urban renewal project is done to effectively utilize the limited downtown. Generally unlike a single project, It features placing a large number of different facilities(residential, commercial, business, cultural, etc.) which is each other organically linked. The purpose of this study is to suggest the method of modeling guide for 3D preliminary cost estimation considering visual and intuitive judgement of space in mix-used development Urban Renewal project. In this research, introducing SME(Standard Module and Element) breakdown structure, FID(Finish Identity) for estimating building space unit-based quantity take off was implemented. It could narrow the discrepancy of opinion between the stakeholders with more accurate cost-estimates, comparing to the traditional methods.