• Title/Summary/Keyword: Multi-Disciplinary

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Multi-disciplinary Optimization of Composite Sandwich Structure for an Aircraft Wing Skin Using Proper Orthogonal Decomposition (적합직교분해법을 이용한 항공기 날개 스킨 복합재 샌드위치 구조의 다분야 최적화)

  • Park, Chanwoo;Kim, Young Sang
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.47 no.7
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    • pp.535-540
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    • 2019
  • The coupling between different models for MDO (Multi-disciplinary Optimization) greatly increases the complexity of the computational framework, while at the same time increasing CPU time and memory usage. To overcome these difficulties, POD (Proper Orthogonal Decomposition) and RBF (Radial Basis Function) are used to solve the optimization problem of determining the thickness of composites and sandwich cores when composite sandwich structures are used as aircraft wing skin materials. POD and RBF are used to construct surrogate models for the wing shape and the load data. Optimization is performed using the objective function and constraint function values which are obtained from the surrogate models.

Juvenile Delinquency/Crimes (청소년 비행/범죄)

  • Lee, Sook;Baik, Jee-Sook;Lee, Joo-Yeon
    • Korean Journal of Child Studies
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    • v.30 no.6
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    • pp.361-373
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    • 2009
  • Although juvenile delinquency has been continually decreasing, property and traffic crimes have been increasing. The age of delinquents or adolescent criminals are getting younger, and the number of female involved in delinquency or crimes has been increasing. The most frequently researched topic has been factors of causal effects on juvenile delinquency and development of counseling programs for the delinquents. Other studies have been investigating descriptive data, analyzing differences by sex, or categorizing delinquency behaviors by type, and suggesting political alternatives for restoration of juvenile delinquency. There have been several academic issues on the conceptual definition of delinquency, shift in research topics, and research methods. There have been further discussions on the imminent values of making relevant policies based on the results of multi-disciplinary research, developing the preventive and therapeutic programs and career counseling programs, and working with the experts from local communities.

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AN INTEGRATED SYSTEM FOR COMPUTATIONAL AERODYNAMIC, STRUCTURAL AND RF STEALTH ANALYSIS (공력-구조-RF 스텔스 통합 전산해석 시스템 연구)

  • Park, G.R.;Yang, Y.R.;Jung, S.K.;Myong, R.S.;Cho, T.H.
    • 한국전산유체공학회:학술대회논문집
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    • 2010.05a
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    • pp.78-82
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    • 2010
  • An integrated multi-disciplinary design system plays a critical role in the preliminary design of an aircraft. In this paper such system is developed for the multi-disciplinary computation and design; aerodynamics elasticity, and radio frequency stealth. Common data base of geometry and structured grids is generated and used for aerodynamic, structural and eletromagnetics analysis. The Navier-Stokes CFD, FEM, and CEM technique are used for aerodynamic, structural, and RF stealth computations respectively.

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Effects of a Multi-disciplinary Approached, Empowerment Theory Based Self-management Intervention in Older Adults with Chronic Illness (만성질환 노인에서 임파워먼트 이론에 근거한 다학제적 자기관리 프로그램의 효과)

  • Park, Chorong;Song, Misoon;Cho, Belong;Lim, Jaeyoung;Song, Wook;Chang, HeeKyung;Park, Yeon-Hwan
    • Journal of Korean Academy of Nursing
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    • v.45 no.2
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    • pp.192-201
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    • 2015
  • Purpose: The purpose of this study was to develop a multi-disciplinary self-management intervention based on empowerment theory and to evaluate the effectiveness of the intervention for older adults with chronic illness. Methods: A randomized controlled trial design was used with 43 Korean older adults with chronic illness (Experimental group=22, Control group=21). The intervention consisted of two phases: (1) 8-week multi-disciplinary, team guided, group-based health education, exercise session, and individual empowerment counseling, (2) 16-week self-help group activities including weekly exercise and group discussion to maintain acquired self-management skills and problem-solving skills. Baseline, 8-week, and 24-week assessments measured health empowerment, exercise self-efficacy, physical activity, and physical function. Results: Health empowerment, physical activity, and physical function in the experimental group increased significantly compared to the control group over time. Exercise self-efficacy significantly increased in experimental group over time but there was no significant difference between the two groups. Conclusion: The self-management program based on empowerment theory improved health empowerment, physical activity, and physical function in older adults. The study finding suggests that a health empowerment strategy may be an effective approach for older adults with multiple chronic illnesses in terms of achieving a sense of control over their chronic illness and actively engaging self-management.