• 제목/요약/키워드: Properties of project

검색결과 572건 처리시간 0.024초

프로젝트 및 발주자 특성을 고려한 CM업무 위탁모델 (Commissioning Model for CM Services Considering Project and owner Properties)

  • 강현구;유정호;김창덕
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2007년도 정기학술발표대회 논문집
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    • pp.632-636
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    • 2007
  • 최근 건설프로젝트는 점차 대형화, 복잡화 되어가고 있으며 그에 따라 관리하여야 할 항목 또한 늘어났으며 발주자 조직 역시 축소되었다. 이에 따라 국내 건설산업에도 다양한 사업관리방식이 도입되었다. 그러나 이와 같은 건설사업관리의 도입은 시행착오로 인한 혼라, 제도의 불합리성으로 인한 관리주체의 역할중복으로 인하여 비용증가 등의 문제를 야기시키고 있다. 그리고 건설프로젝트는 그 특성상 매 프로젝트마다 각자 다른 특성을 가지고 있으며 프로젝트의 발주자 조직 역시 다양한 특성을 지니고 있다. 하지만 건설사업관리에 있어서 이러한 특성을 반영하지 못하고 있으며 획일적인 사업관리 방식만이 적용되어지고 있다. 이러한 문제의 해결을 위하여 본 연구에서는 프로젝트의 특성과 발주자의 특성의 분석을 통하여 해당 프로젝트에 특화될 수 있는 CM업무 위탁모델을 제안하고자 한다. 이를 위하여 프로젝트, 발주자 능력, 발주자 요구사항을 파악, 분석하여 중점관리대상의 선정, CM의 서비스항목, 발주자의 역할정의를 하고자 한다.

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고체 추진제의 기계물성 최적화 연구 (A Study on the Mechanical Properties Optimization of Solid Propellant)

  • 최용규;류태하;김낙현;김정은
    • 한국추진공학회지
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    • 제19권6호
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    • pp.91-97
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    • 2015
  • HTPB/AP/Al 계열의 혼합형 열경화 추진제를 적용한 로켓 연구개발에 있어서의 추진제 기계물성 규격을 정하는 일련의 과정을 고찰하고, 공정지수를 통하여 추진제 제조에서의 공정관리를 분석하였다. 이를 근간으로 기계물성간의 종속성을 분석하고 최적화 물성을 제시함으로서 불량률을 제거하는 공정 안전도 향상뿐만 아니라 추진제 그레인의 구조적 안전도 상승에도 기여할 것이다.

Designing a Fuzzy Expert System with a Hybrid Approach to Select Operational Strategies in Project-Based Organizations with a Selected Competitive Priority

  • Javanrad, Ehsan;Pooya, Alireza;Kahani, Mohsen;Farimani, Nasser Motahari
    • Industrial Engineering and Management Systems
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    • 제16권1호
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    • pp.129-140
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    • 2017
  • This research was conducted in order to solve the problem of selecting an operational strategy for projects in project-based organizations by designing a fuzzy expert system. In the current research, we first determined the contributing parameters in operational strategy of project-based organizations based on existing research literature and experts' opinion. Next, we divided them into two groups of model inputs and outputs and the rules governing them were determined by referring to research literature and educational instances. In order to integrate rules, the revised Ternary Grid (revised TG) and expert opinions were applied according to a hybrid algorithm. The Ultimate rules were provided in Fuzzy Inference System format (FIS). In this FIS, proper manufacturing decisions are recommended to the user based on selected competitive priority and also project properties. This paper is the first study in which rules and relations governing the parameters contributing operational strategy in project-based organizations are acquired in a guided integrated process and in the shape of an expert system. Using the decision support system presented in this research, managers of project-based organizations can easily become informed of proper manufacturing decisions in proportion with selected competitive priority and project properties; and also be ensured that theoretical background and past experiences are considered.

Preparation of uniformly dispersed iron nanoparticles and growth of carbon nanotube

  • Kim, Do-Yoon;Yoo, Ji-Beom;Berdinsky, A.S.;Park, Chong-Yun;Han, In-Taek;Jung, Jae-Eun;Jin, Yong-Wan;Kim, Jong-Min
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.462-464
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    • 2004
  • We studied the growth characteristics of carbon nanotubes which was grown from uniformly dispersed iron nanoparticles prepared from iron-acetate [Fe(II)$(CH_3COO)_2$]. The density of CNT was controlled from precursor concentrations. We also investigated the field emission properties of CNTs. We found that the optimization of CNT density is an important factor for field_emission properties.

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A STUDY ON BIM-BASED 5D SIMULATION IN WEB ENVIRONMENT

  • Jae-Bok Lim;Jae-Hong Ahn;Ju-Hyung Kim;Jae-Jun Kim
    • 국제학술발표논문집
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    • The 5th International Conference on Construction Engineering and Project Management
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    • pp.169-172
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    • 2013
  • Building Information Modeling (BIM) is an effective decision-making platform that helps to save project cost and enhance quality of construction. By generating and linking a wide variety of objects data, BIM can be effectively utilized, and it should be ensured that object properties maintain consistency throughout the project period of design, estimates, construction, maintenance and repair. This study examined how to utilize BIM data in a construction project, by linking cost and schedule data in web environment, to better utilize the information and maintain consistency of the BIM information. To do so, the model integrated WBS data and CBS data, linked them with BIM model to realize 5D simulation in web environment. As a result, cost and schedule data could be simultaneously acquired, and object properties-cost, schedule, location-as well. These are expected to contribute to developing a BIM-based automatic data-processing system in web environment.

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SUCCESS FACTORS FOR URBAN REGENERATION PROJECT

  • Hae-Rim Kwon;Seul-Ki Lee;Jung-Ho Yu
    • 국제학술발표논문집
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    • The 3th International Conference on Construction Engineering and Project Management
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    • pp.1515-1520
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    • 2009
  • Objective of Urban regeneration project is a recovery of urban utilities through a physical, environmental, cultural, industrial and economic regeneration. The current paradigm of urban regeneration is not a simple redevelopment as physical redevelopment or improvement. Urban regeneration project is an overall development including a central commercial capacity and business capacity for administration and management, cultural facilities, sightseeing, a residential area. So Urban regeneration project include a various project. Project management of Urban Regeneration project is widely different with general project management. For that purpose, this research would offer to contribute the success factors of urban regeneration project for successful project. For offering these, this research analyzed the properties of urban regeneration project and success factors of construction project by reviewing a literature. The principal characteristics are variety objectives of each district of urban regeneration project, a diversity of stakeholder's objectives and complex structure of stakeholders, an unstructured decision-making system, a lack of plan for business cooperation. We abstracted factors for urban regeneration from brainstorming and verification by experienced experts. We suggest 2 factors related to achieving a goal effectively and 10 factors related to progress of urban regeneration project efficiently.

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HTPB 바인더의 화학적 구조에 따른 추진제의 유변학적, 기계적 특성 연구 (Investigation on Rheological and Mechanical Properties of Propellant with Chemical Structures of HTPB Binder)

  • 김정은;류태하;홍명표;이형진
    • 한국추진공학회지
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    • 제21권1호
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    • pp.84-90
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    • 2017
  • 추진제의 주 바인더로 사용하고 있는 폴리부타디엔 계열인 HTPB (Hydroxyl Terminated Polybutadiene)는 합성 뱃취에 따라 분자량 및 관능기수 등 바인더 특성이 달랐으며 이는 바인더 자체와 추진제의 경화 반응 속도에 영향을 미치는 것으로 분석되었다. 최종적으로 이러한 추진제의 경화 반응 속도가 추진제 물성에 영향을 미치며, 우수한 물성의 추진제를 제조하기 위해서는 적절한 수준의 바인더의 경화 반응이 필요한 것으로 분석되었다.

독일 산업·기술문화재 한자 코크스 제조소 재생사례 분석 (Analysis on the Characteristics of the Precedents for Industrial/Technological Cultural Properties of the Hansa Coking Plant)

  • 김홍기;박창호
    • 한국가구학회지
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    • 제27권1호
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    • pp.59-68
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    • 2016
  • The Industrial/Technological Cultural Properties are being protected, the rest facing with demolition and damages. In order to better cope with such situation, Korea has officially introduced the Registered Cultural Properties System since 2001 and began acknowledging the historical values of industrial buildings as modern cultural properties. In the Nordrhein-Westfalen, Germany, there are approximately 3,500 industrial buildings under the cultural asset protection and management not only in the Ruhr-region but also state-wide. Among these, this case study focuses on the Hansa Coking Plant, a large-scale Revitalization project to rehabilitate the old industrial complexes and facility buildings that have been shut down on December 15, 1992. Purpose of this study is to analyze main project plans of each facility in the Hansa Coking Plant and to bring out the main features of the plans, so that they can be utilized to find suggestions for Industrial/Technological Cultural Properties Revitalization in Korea.

도시재생사업의 특성을 고려한 문제점 분석 (Problem Analysis Considering Property of Urban Redevelopment)

  • 강현구;유정호;김창덕
    • 한국건설관리학회:학술대회논문집
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    • 한국건설관리학회 2008년도 정기학술발표대회 논문집
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    • pp.531-535
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    • 2008
  • 도시재생사업은 수평적으로 분산된 기능을 수직적으로 통합하고 입체적으로 재구성하는 것으로 하나의 사업안에 수많은 프로젝트들이 포함되어 있어 기존과 프로젝트 매니지먼트와는 많은 차이가 있다. 본 연구는 이러한 도시재생사업의 특성을 고려하여 성공적인 도시재생사업의 수행을 위한 방안의 제시에 목적이 있으며 이를 위하여 도시재생사업의 특성, 문제점, 해결방안을 모색하였다. 변화하는 도시재생 패러다임에 부합하지 못하는 현재의 도시재생사업의 문제점을 분석하였다.

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Magnetotransport Properties of MnAs Film on GaAs(001) Substrate

  • Sinsarp Asawin;Manago Takashi;Akinaga Hiroyuki
    • Journal of Magnetics
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    • 제11권1호
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    • pp.5-7
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    • 2006
  • The magnetotransport properties at room temperature of the 250-nm-thick MnAs(-1100) film grown on GaAs(001) substrate by molecular beam epitaxy was investigated. The results measured with various magnetic field directions were reported. They show the negative magnetoresistive effect for all field directions. The difference in the magnetoresistance curves for different field directions is in agreement with the magnetic anisotropy of the film.