• 제목/요약/키워드: Deficiencies

검색결과 683건 처리시간 0.026초

Towards a Dynamic National System of Innovation in Malaysia : Enhancing the Management of R&D in Public Research Institutions and Universities

  • Thiruchelvam, K.
    • 기술혁신연구
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    • 제12권2호
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    • pp.127-150
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    • 2004
  • This article examines the issue of utilization of research findings from public funded research institutions (PRIs) and universities in Malaysia from the perspective of knowledge flows. Such a perspective is adapted from the literature on innovation and knowledge systems. This representation of innovation in terms of knowledge flows helps us to focus on the managerial dimensions involved in the organization of activities such as research and development (R&D). The paper reveals that there is a dismal rate of adoption of research findings generated from PRIs and universities in Malaysia. It is argued that this poor performance is a consequence of weak research management practices. A framework on the key elements of sound research management is described. The article concludes with a discussion on managerial and policy issues arising from these deficiencies and some suggestions for addressing them.

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A Loss-of-RHR Event under the Various Plant Configurations in Low Power or Shutdown Conditions

  • Seul, Kwang-Won;Bang, Young-Seok;Lee, Sukho;Kim, Hho-Jung
    • 한국원자력학회:학술대회논문집
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    • 한국원자력학회 1997년도 춘계학술발표회논문집(1)
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    • pp.551-556
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    • 1997
  • A present study addresses a loss-of-RHR event as an initiating event under specific low power or shutdown conditions. Two typical plant configurations, cold leg opening case with water-filled steam generators and pressurizer opening case with emptied steam generators, were evaluated using the RELAP5/ MOD3.2 code. The calculation was compared with the experiment conducted at ROSA-IV/LSTF in Japan. As a result, the code was capable of simulating the system transient behavior following the event. Especially, thermal hydraulic transport processes including non-condensable gas behavior were reasonably predicted with an appropriate time step and CPU time. However, there were some code deficiencies such as too large system mass errors and severe flow oscillations in core region.

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폴리머 절연물 장기성능 평가를 위한 복합열화 시험기술 (Multi-aging Test Technology for Estimating Long Time Performance of Polymer Insulators)

  • 조한구;한세원;이운용
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1999년도 하계학술대회 논문집 E
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    • pp.2332-2334
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    • 1999
  • This paper presents the results of multi-stress chamber experiments done to examine the tracking and erosion performance of polymer insulator. Multi-stress testing is able to demonstrate deficiencies of polymer insulator materials and designs including the nature of interfaces in insulation design. Therefore, multi-stress testing is believed to a suitable test for evaluating the aging performance of polymer insulator designs. We have investigated IEC 61109 Annex C for estimating long time performance of polymer insulator.

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A Quality Assurance Process Model on Fault Management

  • Kim, Hyo-Soo;Baek, Cheong-Ho
    • Journal of Information Processing Systems
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    • 제2권3호
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    • pp.163-169
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    • 2006
  • So far, little research has been conducted into developing a QAPM (Quality Assurance Process Model) for telecommunications applications on the basis of TMN. This is the first trial of the design of TMN-based QAPM on fault management with UML. A key attribute of the QAPM is that it can easily identify current deficiencies in a legacy system on the basis of TMN architecture. Using an empirical comparison with the legacy systems of a common carrier validates the QAPM as the framework for a future mode of the operation process. The results indicate that this paper can be used to build ERP(Enterprise Resource Planning) for a telecommunications fault management solution that is one of the network management application building blocks. The future work of this paper will involve applying the QAPM to build ERP for RTE (Real Time Enterprise) fault management solution and more research on ERP design will be necessary to accomplish software reuse.

SHAPE OPTIMIZATION OF COMPRESSOR BLADES USING 3D NAVIER-STOKES FLOW PHYSICS

  • Lee K. D.;Chung J.;Shim J.
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 2001년도 춘계 학술대회논문집
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    • pp.1-8
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    • 2001
  • A CFD-based design method for transonic axial compressor blades was developed based on three-dimensional Navier-Stokes flow physics. The method employs a sectional three-dimensional (S3D) analysis concept where the three-dimensional flow analysis is performed on the grid plane of a span station with spanwise flux components held fixed. The S3D analysis produced flow solutions nearly identical to those of three-dimensional analysis, regardless of the initialization of the flow field. The sectional design based on the S3D analysis can include three-dimensional effects of compressor flows and thus overcome the deficiencies associated with the use of quasi-three-dimensional flow physics in conventional sectional design. The S3D design was first used in the inverse triode to find the geometry that produces a specified target pressure distribution. The method was also applied to optimize the adiabatic efficiency of the blade sections of Rotor 37. A new blade was constructed with the optimized sectional geometries at several span stations and its aerodynamic performance was evaluated with three-dimensional analyses.

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ISO 6954:2000의 현장 실용성 검토 및 개정에 대한 제안 (Field Practicality Review and Revision Proposal in ISO 6954 : 2000)

  • 이돈출;로날드 디 바로
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2014년도 춘계학술대회 논문집
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    • pp.530-533
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    • 2014
  • ISO6954:2000 (Mechanical vibration - Guidelines for the measurement, reporting and evaluation of vibration with regard to habitability on passenger and merchant ships) has taken effect as the governing body for vibration regarding habitability due to ship vibration. However, ISO6954:2000, when compared ISO6954:1984 (the first draft of ISO6954), needs to clear some deficiencies concerning convenience and reliability during field applications. In this paper, ISO6954: 1984 and 2000 are proposed on their revisions in the future.

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Influence of Selenization Pressure on Properties of CIGS Absorber Layer Prepared by RF Sputtering

  • Jung, Sung Hee;Choi, Ji Hyun;Chung, Chee Won
    • Current Photovoltaic Research
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    • 제4권3호
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    • pp.87-92
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    • 2016
  • The effects of selenization pressure on the structural, optical and electrical properties of the CIGS thin films prepared by RF magnetron sputtering using a single quaternary target were investigated. At selenization pressures lower than atmospheric pressure, CIGS thin films formed non-stoichiometric compounds due to deficiencies of Se vapor. In contrast, when selenization process was conducted at above atmospheric pressure, the residence time of Se vapor inside the tube increased so that the Se element could be incorporated within vacant sites of the CIGS structure, resulting in the formation of stoichiometric CIGS thin films. High quality CIGS thin films could be obtained when the selenization process was performed at pressures greater than atmospheric and $550^{\circ}C$.

Finite element analysis of longitudinal reinforcement beams with UHPFC under torsion

  • Mohammed, Thaer Jasim;Bakar, B.H. Abu;Bunnori, N. Muhamad;Ibraheem, Omer Farouk
    • Computers and Concrete
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    • 제16권1호
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    • pp.1-16
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    • 2015
  • The proposed techniques to strengthen concrete members such as steel plates, polymers or concrete have important deficiencies in adherence and durability. The use of UHPFC plates can overtake effectively these problems. In this paper, the possibility of using UHPFC to strengthen RC beams under torsion is investigated. Four specimens of concrete beams reinforced with longitudinal bars only were tested under pure torsion. One of the beams was considered as the baseline specimen, while the others were strengthened by ultra-high-performance fiber concrete (UHPFC) on two, three, and four sides. Finite element analysis was conducted in tandem with experimental work. Results showed that UHPFC enhances the strength, ductility, and toughness of concrete beams under torsional load, and that finite element analysis is in good agreement with the experimental data.

LCD 모니터 공정자동화 장비의 안전성에 대한 CE 인증 (CE Certification for Machinery Safety in Automated LCD Monitor Process)

  • 이환덕;정원
    • 한국신뢰성학회지:신뢰성응용연구
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    • 제11권4호
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    • pp.419-432
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    • 2011
  • In order to distribute machinery to European Union, it is mandatory to get CE marking to ensure the machinery is safe and reliable. The EHSR(Essential Health and Safety Requirements) of the EC Machinery Directive requires the machinery to be designed and manufactured to prevent from any dangerous situation. This study presents a case of CE Certification in Back Cover Nut Insert Machine and introduces an improvement method of product safety and reliability. This study also presents how to eliminate the deficiencies in design and manufacturing, and the process of applying EHSR for CE Marking.