• 제목/요약/키워드: practical evaluation

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HTS 초전도 테이프의 기계-전기적 특성 평가기술 (Evaluation Technology of Mechano-Electromagnetic Properties in HTS Superconducting Tapes for Practical Applications)

  • 신형섭
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 춘계학술대회 논문집 초전도 자성체 연구회
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    • pp.17-22
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    • 2003
  • HTS superconducting tapes are now commercially available for practical applications such as magnets and cables. Since superconductors in such applications are subjected to high mechanical loads that can significantly degrade the superconducting properties, mechanical properties and the strain tolerance known as the strain effect on superconducting properties are needed to be estimated for developing superconducting devices. The progress in technology achieved in the field of strain effect evaluation on the critical current of HTS tapes in various deformation modes is discussed in this study.

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Energy-based damage index for steel structures

  • Bojorquez, E.;Reyes-Salazar, A.;Teran-Gilmore, A.;Ruiz, S.E.
    • Steel and Composite Structures
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    • 제10권4호
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    • pp.331-348
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    • 2010
  • Ample research effort has been oriented into developing damage indices with the aim of estimating in a reasonable manner the consequences, in terms of structural damage and deterioration, of severe plastic cycling. Although several studies have been devoted to calibrate damage indices for steel and reinforced concrete members; currently, there is a challenge to study and calibrate the use of such indices for the practical evaluation of complex structures. The aim of this paper is to introduce an energy-based damage index for multi-degree-of-freedom steel buildings that accounts explicitly for the effects of cumulative plastic deformation demands. The model has been developed by complementing the results obtained from experimental testing of steel members with those derived from analytical studies regarding the distribution of plastic demands on several steel frames designed according to the Mexico City Building Code. It is concluded that the approach discussed herein is a promising tool for practical structural evaluation of framed structures subjected to large energy demands.

배전시스템의 해석적 신뢰도 평가를 위한 실제적인 적용방법 (A practical approach for analytical reliability evaluation of distribution systems)

  • 김재철;한성호;이현화;선개인;장정태
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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    • pp.33-35
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    • 1994
  • This Paper Presents a practical approach to evaluate the reliability indices of electric distribution systems. The use of reliability evaluation is placed with the framework of distribution system planning. In this paper, the reliability model is based on an analytical method, connecting component failure to load point outage each section. five case studies are reported in the paper. These are to study the effect of varying failure rates and repair times on distribution feeders. The results of a study on sample system are presented in this paper.

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An Efficient Engineering Design Education Framework in Information Network Engineering

  • Lee, Sang-Gon;Koh, Kyeong-Uk
    • 공학교육연구
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    • 제15권5호
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    • pp.64-68
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    • 2012
  • Design factors such as design objects establishment, analysis, synthesis, production, test and evaluation should be educated in a systematic way. Also design ability to reflect practical restrictive conditions such as industrial standards, economic feasibility, environmental impact, aesthetics, safety and reliability, ethical impacts and social impacts should be cultivated. In this paper, we explain the meaning of these terms and propose a systematic engineering design education framework satisfying Korean engineering education accreditation criteria. We also present a simple implementation in information network engineering.

실무 적용성 제고를 위한 R&D Portfolio 모형 확장 연구 (A Study of R&D Portfolio Model Expansion for Improving Practical Application)

  • 안태호
    • 경영과정보연구
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    • 제19권
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    • pp.1-15
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    • 2006
  • The concept of portfolio is rarely understood and used in R&D management field. The conventional management technique in selecting R&D projects is scoring each projects and choosing projects based on the scores which are determined during evaluation. As a collection of good stocks is not necessarily a good stock portfolio, a collection of good R&D projects is not always a good R&D project portfolio. In this paper, framework and practical technique for constructing a R&D project portfolio are introduced. This technique can be easily applied in private and plublic R&D institutes.

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비탈형 영구거푸집의 품질평가에 관한 연구 (A Study on the Quality Evaluation of Permament form)

  • 김형남;김우재;김성식;김영희;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1998년도 가을 학술발표대회 논문집(III)
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    • pp.900-905
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    • 1998
  • This study is about quality test of parmament form for practical application. Nowdays domestic building market in the face of 3D, in addition to construction cost increase, materials lack problems and opening a building market to foreign countries, is trying to find out the efficient ways of overcoming these problems. So the efficiacy of form work to technical improvement will contribute a practical permanent form in field through quality test of permmament form. In this paper, we examined the total system of form erections and evaluated the structural permament of columns and beams.

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독일 공동주택 설계경기의 심사평에 나타난 평가항목에 관한 연구 - 연립주택을 중심으로 - (A Study on the Critical Elements in the Commentaries on Competition of the Mulifamily Housing in Germany - Focused on the Rowhousing -)

  • 조자연
    • 한국주거학회논문집
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    • 제14권3호
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    • pp.175-182
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    • 2003
  • In this study, I investigate the critical evaluation elements at the architectural competition of the Rowhousing held nationwide in Germany. These evaluation elements, which can be regarded as the important design evaluation criteria, are selected by the design competition committee. Generally, in Germany the design competition committee consist of professors and famous architects who have theoretical and practical abilities with their own office. I classify and analyze the critical evaluation elements of 95 committee members, working on the selected 9 prize-winners in Germany from 1998 to 2002. I conclude that the critical evaluation elements, ordered by frequency are ; $\circled1$ context, $\circled2$ landscape & outside space, $\circled3$ arrangement of building, $\circled4$ circulation, $\circled5$ organization of plan, $\circled6$ economic aspects, $\circled7$ orientation of building, $\circled8$ parking, $\circled9$organization of form, $\circled10$ natural light. These design evaluation criteria for the Rowhousing in Germany also can apply to the korean case.

정보화 효율성 측정을 위한 성과평가모델에 관한 연구 (A Study on Performance Evaluation Model for Information Efficiency Measurement)

  • 유은숙;정기원
    • 한국전자거래학회지
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    • 제9권2호
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    • pp.33-50
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    • 2004
  • 본 논문에서는 정보화 투자에 대한 성과평가를 통해 공공부문의 정보화 예산투자에 대한 타당성과 효과성 측정 방안, 그리고 투자대비 효과의 적합성을 제고 할 수 있는 계량적 평가모델을 제시하였다. 즉, 전자정부 과제로 추진된 정부전자문서유통센터 구축사업을 대상으로 정보화 투자에 대한 명확한 성과목표를 설정하고 사전평가 및 사후평가를 객관적으로 측정할 수 있는 핵심성과지표(KPI)를 개발하여 계량적 평가모델을 이용한 현장검증 연구방식으로 성과평가 결과를 도출하였다.

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경관분석 및 평가방법에 관한 연구 - 현상학적 접근 - (A Study on the Landscape Analysis and Evaluation Method : A Phenomenological Approach)

  • 임승빈
    • 한국조경학회지
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    • 제16권1호
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    • pp.43-51
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    • 1988
  • 경관평가에 있어서 현상학적 접근은 분석적이고 체계적인 기존의 과학적 방법들과 대비되는 새로운 차원의 접근방법을 보여주고 있다. 기존의 과학적 접근이 정량적, 환원주의적, 폐쇄적, 실험적인 특성을 지녔다고 한다면 현상학적 접근은 정성적, 총체적, 개방적, 체험적 특성을 지녔다고 말할 수 있다. 현상학적 접근에서는 개인의 선호도, 느낌을 경관평가의 주요 기준으로 삼고 있으나, 일정 집단의 평균적 반응보다는 개개인의 다양한 반응, 느낌, 의미 등을 더욱 중요시 여긴다. 이렇게 함으로써 현상학적 방법은 기존의 계량적 혹은 과학적 방법이 지닌 단점을 보완할 수 있는 가능성을 보여준다. 즉 계량적 혹은 과학적 방법에서는 평가대상이 되는 현상을 단순화시킴으로 해서 실제 현상그대로 보지를 못하기 쉬운데 비하여, 현상학적 접근에서는 실제 그대로의 현상을 보려고 시도하며 현상의 본질을 캐내려고 노력한다. 현상학적 접근은 총체적이며 정성적인 입장을 가짐으로해서 실용적인 경관평가 기법이 되기에는 한계가 있다고 볼 수 있으나, 이를 극복할 수 있는 효율적인 방법이 모색되어야 하겠다. 최근의 연구에서는 현상학적 개념과 신뢰성, 타당성 등의 과학적 형식기준을 동시에 만족시킬 수 있는 방법이 개발되고 있음을 볼 수 있으며 이는 매우 바람직한 일이라 할 수 있다. 경관평가에서 현상학적 접근의 대두는 기존의 체계적, 계량적 방법의 타당성(content validity)을 재점검할 수 있는 계기를 만들어 주고 있다.

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