• 제목/요약/키워드: Critical Facility

검색결과 316건 처리시간 0.031초

준공현장의 분쟁해결방안으로서의 사후적 공정분석에 관한 연구 (Studies on Post Contract Schedule Analysis)

  • 고기혁;박성필;김용길
    • 한국중재학회지:중재연구
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    • 제32권4호
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    • pp.103-141
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    • 2022
  • Traditionally, schedule analysis in Korea has been used, mainly through the Critical Path Method, to evaluate the claim for extension of time and/or the amount of liquidated damages for delay. Critical path method, however, cannot identify the delay event and its impact occurred in non-critical path especially in multi facility projects. In multi facility projects that comprise several independent but related facilities or structures, each facility has its own facility critical path the duration of which will be impacted by facility specific critical delays. Thus, only through the non-critical delay analysis along with the critical delay analysis damages not attributable to contractors may be remedied in full. Because all the records and pictures can reveal what has actually happened in post contract review, only the retrospective analysis rather than the prospective analysis based on the assumptions can establish the cause and allocate the each parties' responsibilities appropriately.

소규모 유역에서 자연방류형 단일저류지의 임계지속기간 분석 (The Analysis of Critical Duration of uncontrolled single detention facility in Small Catchment)

  • 박종영;신창동;이정식
    • 한국방재학회 논문집
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    • 제5권2호
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    • pp.17-28
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    • 2005
  • 본 연구의 목적은 소규모 유역에서 홍수 저류시설물과 홍수 조절시설물 사이의 임계지속기간을 평가하는데 있다. 4개 소규모 유역을 통하여 수문분석을 실시하였으며, 유효우량은 NRCS 유효우량 산정방법으로 산정하였다. 홍수 저류시설물과 홍수 조절시설물의 임계지속기간은 허용방류량 고정개념을 이용하여 평가하였다. 허용방류량 고정개념을 이용한 경우 최대 저류비를 발생시키는 시간분포는 Huff 2분위 시간분포로 나타났으며, 자연방류형 단일저류지에서 홍수 조절시설물의 임계지속기간은 홍수 저류시설물의 임계지속기간과 유사한 것으로 나타났다.

Critical Discourse Analysis of Deinstitutionalization News Articles for the Disabled: Focusing on Fairclough's critical discourse analysis

  • JungHyun Kim
    • International Journal of Advanced Culture Technology
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    • 제11권2호
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    • pp.36-43
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    • 2023
  • This study aims to derive discourse's linguistic meaning, production method, and social practice implications by analyzing news reports on de-facility for people with disabilities. To this end, the discourse was analyzed by applying Fairclough's framework of critical discourse analysis. The subject of analysis is a news article on the de-facility of the disabled on the N portal site, and the analysis period is one year, from January 1 to December 31, 2022. First, as a result of the study, the surface meaning of the news discourse on the de-facility for disabled people was ideological through the seriousness of the problem for disabled people, the poor environment, and the policy of de-facility for disabled people separated from reality. Second, the social meaning of the de-facility news discourse for disabled people appeared from a realistic perspective, such as the structural cause of the problem for disabled people and the need for sensible government policies and measures to practice de-facility for disabled people. Finally, the socio-cultural practical implications of the de-facility news discourse for people with disabilities proposed the development of a systematic and realistic de-facility management manual for the disabled, practical government policy support, and changes in self-support perception for disabled people. The results of this study are expected to help find an alternative direction to reduce the gap between actual policies for de-facility for disabled people and practice in the field in the future.

교육시설 유지관리 프로그램 운영관리를 위한 핵심성공요인 도출 (Derivation of Critical Success Factors for Operation Management of Educational Facility Maintenance Management Program)

  • 이미영;박상헌;윤선재;구교진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2021년도 봄 학술논문 발표대회
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    • pp.51-52
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    • 2021
  • The maintenance of educational facilities is divided into inspection and management of facility managers residing in the school and Educational Environment Improvement Projects(EEIP) to carry out maintenance work. Educational support organizations collect maintenance requests through facility inspections by school-specific facility managers, and carry out numerous maintenance projects during the year. The EEIP has the characteristic of Program Management with interrelationships between projects, not multiple projects management. The purpose of the EEIP is to eliminate the inconvenience of school facility users and increase their satisfaction, and achieving the goal is judged to be successful. Despite the importance of management and performance measurement utilizing Critical Success Factor(CSF) for the operation of successful educational facility maintenance management programs, the system for achieving the goals is insufficient. This study derives CSFs for each stage of the EEIP for the success of the EEIP. The CSFs for each stage of the EEIP is expected to serve as a basis for evaluation of educational facility maintenance management programs and can be used as an evaluation index in the future.

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Generation of critical and compatible seismic ground acceleration time histories for high-tech facilities

  • Hong, X.J.;Xu, Y.L.
    • Structural Engineering and Mechanics
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    • 제26권6호
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    • pp.687-707
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    • 2007
  • High-tech facilities engaged in the production of semiconductors and optical microscopes are extremely expensive, which may require time-domain analysis for seismic resistant design in consideration of the most critical directions of seismic ground motions. This paper presents a framework for generating three-dimensional critical seismic ground acceleration time histories compatible with the response spectra specified in seismic design codes. The most critical directions of seismic ground motions associated with the maximum response of a high-tech facility are first identified. A new numerical method is then proposed to derive the power spectrum density functions of ground accelerations which are compatible with the response spectra specified in seismic design codes in critical directions. The ground acceleration time histories for the high-tech facility along the structural axes are generated by applying the spectral representation method to the power spectrum density function matrix and then multiplied by envelope functions to consider nonstationarity of ground motions. The proposed framework is finally applied to a typical three-story high-tech facility, and the numerical results demonstrate the feasibility of the proposed approach.

국제종합경기 시설공사 발주방법의 개선 방안 (The Improvement of Delivery System for International Sports Complex Facility)

  • 최용호;이수용
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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    • pp.107-112
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    • 2005
  • Renovation of existing sports facilities or construction of temporary ones for international complex games requires a wide variety of hundreds of sub construction projects to be awarded at the same time but there are few precedents required regarding the study of tendering process required in such cases. As award of construction contracts to build sports facilities for various international complex games is a critical determinant of fate of international complex games in the initial phase, it is very critical that adequate construction tendering process bedetermined. This research is aimed to study tendering cases for renovation or construction of critical international sports facilities to enhance efficiency of facility construction and define most reasonable tendering approach to satisfy schedule constraints often associated with international complex games and contribute to improvement of international competitiveness of their host cities and propose a direction for further development. This study also provides inputs to subsequent sports events of comparable scale to minimize trial and error.

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국립공원 집단시설지구 배치유형 및 개선방안에 관한 연구 (A Study on The Arangemnent Type and The Improvement of Collective Facility Areas in National Park)

  • 장광은;임승빈
    • 한국농촌계획학회:학술대회논문집
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    • 한국농촌계획학회 1998년도 임시총회 및 추계 학술논문발표회
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    • pp.31-33
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    • 1998
  • The purpose of this study is to suggest the arrangement type and the improvement of the Collective Facility Areas in Korean National Park. The process of this study consists of 3-steps. The first step is to analyze spatial patterns of each Collective Facility Area and categorize Collective Facility Areas into 3 types. In the second step, the critical issues are found in landscape management of Collective Facility Areas. Thirdly the alternative design of each case which can be applicable to the planning of the Collective facility Area is suggested.

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소음/진동을 고려한 발전설비용 감속기 개발 (Development of Reducer for Generating Facility of Electric Power for Low Noise/vibration)

  • 이형우;박철우
    • 한국정밀공학회지
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    • 제25권11호
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    • pp.73-82
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    • 2008
  • A dynamic model of reducer for generating facility of electric pourer having bevel gear pair and planetary gear train is developed by lumped method. The model accounts for the shaft and bearing flexibilities, gyroscopic effects and the force couplings among the transverse and torsion motions due to gearing. Vibration/noise analysis as well as strength of bevel gear pair and planetary gear train are considered. Exciting forces of high reducer for generating facility of electric power areconsidered as the mass unbalance of the rotors, misalignment and a function of gear transmission error. A Campbell diagram, in which the excitation sources caused by the mass unbalance of the rotors, misalignment and the transmitted errors of the gearing are considered, shows that, at the operating speed, there are not critical speed.

Maintaining the close-to-critical state of thorium fuel core of hybrid reactor operated under control by D-T fusion neutron flux

  • Bedenko, Sergey V.;Arzhannikov, Andrey V.;Lutsik, Igor O.;Prikhodko, Vadim V.;Shmakov, Vladimir M.;Modestov, Dmitry G.;Karengin, Alexander G.;Shamanin, Igor V.
    • Nuclear Engineering and Technology
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    • 제53권6호
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    • pp.1736-1746
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    • 2021
  • The results of full-scale numerical experiments of a hybrid thorium-containing fuel cell facility operating in a close-to-critical state due to a controlled source of fusion neutrons are discussed in this work. The facility under study was a complex consisting of two blocks. The first block was based on the concept of a high-temperature gas-cooled thorium reactor core. The second block was an axially symmetrical extended plasma generator of additional neutrons that was placed in the near-axial zone of the facility blanket. The calculated models of the blanket and the plasma generator of D-T neutrons created within the work allowed for research of the neutronic parameters of the facility in stationary and pulse-periodic operation modes. This research will make it possible to construct a safe facility and investigate the properties of thorium fuel, which can be continuously used in the epithermal spectrum of the considered hybrid fusion-fission reactor.

전기 기관차 중수선 시설의 설계 변수 최적화 (Optimization for the Design Parameters of Electric Locomotive Overhaul Maintenance Facility)

  • 엄인섭;천현재;이홍철
    • 한국철도학회논문집
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    • 제13권2호
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    • pp.222-228
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    • 2010
  • 전기 기관차 중수선 시설과 같이 복잡한 시스템의 설계 변수와 중요 변수 최적화는 수리적인 형태로 분석하는 것이 매우 어려운 작업이 된다. 본 논문에서는 메타 모델의 개념을 시뮬레이션 근사 모델에 적용하여 설계 변수와 중요 변수의 최적화를 수행하였다. 시뮬레이션 설계를 위하여 Critical Path 분석과 민감도 분석 수행하여 설계 변수와 실험 횟수를 줄이기 위하여 노력을 하였다. 시뮬레이션 분석은 다 목적 비선형 계획법을 구성한 후 파레토 최적해 집합을 산출하여 설계자에게 다중 대안의 해 집합을 제시하여 실제 시스템의 적용에 대한 유동성을 제공하려고 노력하였다. 본 논문에서 제시 된 기법은 열차 중수선 시설의 설계 및 분석에 있어서 시뮬레이션과 메타 모델을 이용한 하나의 방법으로 이용이 가능 할 것이다.