• 제목/요약/키워드: core concept

검색결과 975건 처리시간 0.03초

과학기술분야 핵심학술지 선정 (Constructing Core Journal Lists in the field of Sci-Tech)

  • 황혜경;최호남;최희윤;남기홍
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2007년도 추계 종합학술대회 논문집
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    • pp.112-115
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    • 2007
  • 핵심 학술지리스트란 도서관의 주요 이용자의 요구에 가장 적합한 리스트를 의미한다. 본 고에서는 핵심학술지에 대한 개념과 선행연구, 핵심학술지 선정을 위한 다양한 방법론, 선정시 고려사항을 살펴보았다. 그리고 이와같은 방법을 고려하여 국내 과학기술분야의 핵심학술지를 선정을 위한 기준을 도출하여 보았다.

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Feasibility Study on the Utilization of Mixed Oxide Fuel in Korean 900MWe PWR Core Through Conceptual Core Nuclear Design and Analysis

  • Joo, Hyung-Kook;Kim, Young-Jin;Jung, Hyung-Guk;Sohn, Dong-Seong
    • Nuclear Engineering and Technology
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    • 제29권4호
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    • pp.299-309
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    • 1997
  • The neutronic feasibility of typical Korean three-loop 900MWe class PWR core loaded with mixed oxide fuels for both annual and 18-month cycle strategies has been investigated as a means for spent fuel management. For this study, a method of determining equivalent plutonium content was developed under the equivalence concept which gives the same cycle length as uranium fuel. Optimal plutonium zoning within the MOX assembly was also designed with the aim of minimizing the peak md power. Conceptual core designs hate hen developed for equilibrium cycle with the following variations: annual and 18-month cycle, 1/3 and full MOX loading schemes, and typical and high moderation lattice. The analysis of key core physics parameters shows that in all cases considered satisfactory core designs seem to be feasible, though addition of control rod system and change in Technical Specification for soluble boron concentration are required for full MOX loading in order to meet the current design requirements.

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잠수함 개념설계에 모델기반 시스템 엔지니어링을 적용하기 위한 방법에 대한 연구 (A study on MBSE(Model-Based Systems Engineering) application method for concept design of submarine)

  • 배정훈;김병목;김미희;신성철;김수영;안진우
    • 시스템엔지니어링학술지
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    • 제9권2호
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    • pp.7-14
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    • 2013
  • Because submarine is high-technology and very complex system, it takes a lot of time, cost and manpower for design. For efficient concept design, application of systematic method is required such as system engineering. In this study, we studied application method of MBSE for submarine concept design with SWBS (Ship Work Breakdown Structure). Components of submarine system from SWBS were classified and organized as system architecture with 'Vitech CORE'. Through the MBSE application for concept design, systematic, efficient and traceable concept design of submarine was considered.

아동간호의 질에 대한 개념분석 (Quality of Pediatric Nursing Care: Concept Analysis)

  • 최미영;방경숙
    • 대한간호학회지
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    • 제40권6호
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    • pp.757-764
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    • 2010
  • Purpose: This paper is a report of a concept analysis of 'quality of pediatric nursing care', Methods: Rodgers's evolutionary method of concept analysis was used. Data were collected from published literature related to quality of pediatric nursing care. Results: Quality of pediatric nursing care was identified with three dimensions and seven attributes: 1) nurse's character: technical competence, interpersonal competence, 2) nurse's activities: developmentally appropriate care, attentiveness, entertainment, 3) nurse-parent interaction: nurse-parent partnership, emotional support. Antecedents of quality of pediatric nursing care were 'child and parent's expectation about pediatric nursing care', 'previous caring experience of pediatric nurses'. Consequences of quality of pediatric nursing care were 'meet child and parent's needs' and 'better health outcomes.' Conclusion: 'Quality of pediatric nursing care' is a core concept in pediatric nursing practice. Appropriate instruments to operationalize the concept need to be developed.

Core-Shell Polymerization with Hydrophilic Polymer Cores

  • Park, Jong-Myung
    • Macromolecular Research
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    • 제9권1호
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    • pp.51-65
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    • 2001
  • Two-stage emulsion polymerizations of hydrophobic monomers on hydrophilic seed polymer particles were carried out to make core-shell composite particles. It was found that the loci of polymerization in the second stage were the surface layer of the hydrophilic seed latex particles, and that it has resulted in the formation of either eccentric core-shell particles with the core exposed to the aqueous phase or aggregated nonspherical composite particles with the shell attached on the seed surface as many small separated particles. The driving force of these phenomena is related to the gain in free energy of the system in going from the hydrophobic polymer-water interface to hydrophilic polymer-water interface. Thermodynamic analysis of the present polymerization system, which was based on spreading coefficients, supported the likely occurrence of such nonspherical particles due to the combined effects of interfacial free energies and phase separation between the two polymer phases. A hypothetical pathway was proposed to prepare hydrophilic core-hydrophobic shell composite latex particles, which is based on the concept of opposing driving and resistance forces for the phase migration. It was found that the viscosity of the monomer-swollen polymer phase played important role in the formation of particle morphology.

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Suppression of interfacial crack for foam core sandwich panel with crack arrester

  • Hirose, Y.;Hojo, M.;Fujiyoshi, A.;Matsubara, G.
    • Advanced Composite Materials
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    • 제16권1호
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    • pp.11-30
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    • 2007
  • Since delamination often propagates at the interfacial layer between a surface skin and a foam core, a crack arrester is proposed for the suppression of the delamination. The arrester has a semi-cylindrical shape and is arranged in the foam core and is attached to the surface skin. Here, energy release rates and complex stress intensity factors are calculated using finite element analysis. Effects of the arrester size and its elastic moduli on the crack suppressing capability are investigated. Considerable reductions of the energy release rates at the crack tip are achieved as the crack tip approached the leading edge of the crack arrester. Thus, this new concept of a crack arrester may become a promising device to suppress crack initiation and propagation of the foam core sandwich panels.

창의적 웹디자인 컨셉 개발에 관한 연구 (A Study on the Creative Web Design Concept Development)

  • 서미라;박상진;곽훈성
    • 한국콘텐츠학회논문지
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    • 제6권6호
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    • pp.136-143
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    • 2006
  • 다양한 미디어의 출현과 변화가 가속화되어가는 현대사회는 디자이너에게 경쟁력 있게 변화에 대처 하는 능력을 요구한다. 현대사회의 핵심 디자인 산업분야 중 하나인 웹 디자인 분야도 제작 기술 전문화에서 창의적 디자인 개발 구도로의 전환을 절실히 필요로 하고 있다. 일반적으로 창의적 디자인 개발 능력은 학습을 통해 익힐 수 있다. 따라서 창조적인 디자인 개발을 위한 창의력 개발 교육이 필요한 것이다. 창의적 사고훈련이 경쟁력 있는 디자인을 위한 핵심 요건으로 인식되면서 이에 대한 교육방법이 다각도로 진행되고 있다. 하지만 구체적으로 디자인 컨셉을 위한 연구는 미흡한 실정이다. 이에 본 논문은 새로운 사고방식을 자극하는 방법으로 디자인 컨셉 도출을 보다 창의적으로 설정하는데 도움을 되는 모델을 연구하고자 한다. 연구 과정에서 제시된 컨셉 개발 프로세스는 창의적인 웹 디자인 컨셉 도출을 위한 과정을 체계화시키며 경쟁력 강화를 위하여 디자인 개발에 활용되기를 기대한다.

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Conceptual Core Design of 1300MWe Reactor for Soluble Boron Free Operation Using a New Fuel Concept

  • Kim, Soon-Young;Kim, Jong-Kyung
    • Nuclear Engineering and Technology
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    • 제31권4호
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    • pp.391-400
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    • 1999
  • A conceptual core design of the 1,300MWe KNGR (Korean Next Generation Reactor) without using soluble boron for reactivity control was developed to determine whether it is technically feasible to implement SBF (Soluble Boron Free) operation. Based on the borated KNGR core design, the fuel assembly and control rod configuration were modified for extensive use of burnable poison rods and control rods. A new fuel rod, in which Pu-238 had been substituted for a small amount of U-238 in fuel composition, was introduced to assist the reactivity control by burnable poison rods. Since Pu-238 has a considerably large thermal neutron capture cross section, the new fuel assembly showed good reactivity suppression capability throughout the entire cycle turnup, especially at BOC (Beginning of Cycle). Moreover, relatively uniform control of power distribution was possible since the new fuel assemblies were loaded throughout the core. In this study, core excess reactivity was limited to 2.0 %$\delta$$\rho$ for the minimal use of control rods. The analysis results of the SBF KNGR core showed that axial power distribution control can be achieved by using the simplest zoning scheme of the fuel assembly Furthermore, the sufficient shutdown margin and the stability against axial xenon oscillations were secured in this SBF core. It is, therefore, concluded that a SBF operation is technically feasible for a large sized LWR (Light Water Reactor).

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A Study on the Development of Core Competency Diagnostic Tools for Professors at A' University

  • Soo-Min PARK;Tae-Chang RYU
    • 융합경영연구
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    • 제11권4호
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    • pp.31-39
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    • 2023
  • Purpose: This study attempted to systematize a support system that can enhance teaching core competencies by establishing a scale for diagnosing teaching core competencies at University A. Research design, data and methodology : To this end, the first Delphi was conducted With six experts related to university core competency modeling research by extracting factors and designing structured questionnaires through a literature review process that collects and analyzes prior research related to domestic and foreign university teaching competency. The derived questions were diagnosed on 27 professors, and independent sample t-verification and ANOVA were conducted using SPSS 24.0 for analysis by key teaching competency factors. Result: What is the standard suitability of KMO. It was shown as 929 (KMO standard conformity value is close to 1), and Barlett's sphericity verification showed χ2=5773.295, df=1081, p<.It appeared as 001 and confirmed that it was suitable for conducting factor analysis. Conclusions: The core competencies of A University teachers were set based on the educational goals of A University, such as basic teaching competency, creative teaching competency, practical teaching competency, and communication teaching competency. This means that the concept and factors of the core competency of professors are likely to change, and in the end, continuous efforts to upgrade and apply research on core competency of professors are essential to quickly and organically respond to changes in competency required to increase the competitiveness of universities.

지역의 정보발신지로서 충북지역 향토민속자료전시관에 대한 연구 (A Study on the Fork Exhibition Hall as Eco-museum Core Center in Chungbuk Area)

  • 방한영;최효승
    • 한국농촌건축학회논문집
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    • 제5권2호
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    • pp.20-32
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    • 2003
  • In this study, I grasped the actual conditions of folk exhibition hall in Chungbuk area. From this data I researched basically as the fundamental role of regional museum, eco-museum core center facilities, the connection with islanded and various inheritances, and central facilities whole area to the museum. And I could get following conclusion. First, on the studied result of folk exhibition hall in chungbuk area, it is not enough the activity of unearthing, collection, study etc. that is basic activity of the museum because the museum just permanently displayed historical contents of the area and simple life folk data. Second, add to existent museum concept and have to widen viewpoint to the museum which whole area is no roof, and utilize folk exhibition hall as the central facilities. Specially, there are a lot of difficulties to communicate information to visitors because of the absence of cultural heritance exponent. So a plan that local resident participate actively in museum activity may have to be considered. Third, the concept of inheritance limited in historical culture of area has to be widening by nature and industry etc. And we should keep up study that is the linked plan to scattered conservation remains, inheritance and tourist place in area.

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