• Title/Summary/Keyword: study method

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A Study on the Efficient Meshfree Method Using Adaptive Refinement Analysis (적응적 세분화기법을 이용한 효율적 무요소법에 관한 연구)

  • Han, Kyu-Taek
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.9 no.5
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    • pp.50-56
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    • 2010
  • Meshfree methods show many advantages over finite element method(FEM) in the class of problems for which the remeshing process is inevitable when the conventional FEM used, such as propagating crack problems, large deformation and so on. One of the promising applications of meshfree methods is the adaptive refinement for problems having multi-scale nature. In this study, an adaptive node generation procedure is proposed and several numerical examples are also presented to illustrate the efficiency of proposed method.

RoHS management and product reliability ensure method for the environmental preservation (환경보호를 위한 RoHS 관리와 제품신뢰성 확보 방안)

  • Lee, Jong-Beom;Cho, Jai-Rip
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2007.04a
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    • pp.362-369
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    • 2007
  • This study set the hypothesis to develop the method that was analysis and application of a reliability evaluation method of environmental material for the Computer, Color TV, Monitor, Microwave oven, Electric Refrigerator, Automobile parts, other goods. RoHS management and product reliability ensure method for the conservation of environment. Especially, this study emphasis on regulate export of the EU and North America that it's a environmental material problem. Therefore, this study emphasis on the application of a reliability ensure method of environmental material and the use of other parameter by environmental reliability test data. The result of this study is as follows. 1) There is relationship between regulate material and technical protecting system. 2) Characteristics of hazard material is operating a healthcare damage factor as well as regulate environmental factors.

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A Study on the Treatment of Missing Value using Grey Relational Grade and k-NN Approach

  • Chun, Young-Min;Chung, Sung-Suk
    • 한국데이터정보과학회:학술대회논문집
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    • 2006.04a
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    • pp.55-62
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    • 2006
  • Huang proposed a grey-based nearest neighbor approach to predict accurately missing attribute value in 2004. Our study proposes which way to decide the number of nearest neighbors using not only the dong's grey relational grade but also the wen's grey relational grade. Besides, our study uses not an arithmetic(unweighted) mean but a weighted one. Also, GRG is used by a weighted value when we impute a missing values. There are four different methods - DU, DW, WU, WW. The performance of WW(wen's GRG & weighted mean) method is the best of my other methods. It had been proven by Huang that his method was much better than mean imputation method and multiple imputation method. The performance of our study is far superior to that of Huang.

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The Suggestion of the clinical application of Sasang Constitutional Diagnosis (사상체질 진단의 객관화를 위한 제언)

  • Park, Hye-Sun;Kim, Hyung-Soon;Kim, Kyung-Yo;Lee, Si-Woo
    • Journal of Sasang Constitutional Medicine
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    • v.13 no.2
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    • pp.138-143
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    • 2001
  • 1. Background Among the clinical application of Sasang Constitutional diagnostic methods, a morphologic study of face is recognized by the Ministry of Health and Welfare as a legitimate Hanbang diagnostic method. But there are some indirect different view about this method. We should criticize this method for the better. 2. Method We criticize the current morphologic study of face by its literature basis, its measurement and its result, compared with ${\ulcorner}$Dongyisoosebowon${\lrcorner}$ and other related literatures. 3. Conclusions We suggest thar the current morphologic study of face is not proper for the clinical application of Sasang Constitutional diagnostic method in the point of the lack of literature basis and the intervention of the examiner's subjectivities.

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Verification of Modified Equivalent Linear Analysis Through Case Study (수정된 등가선형 해석 기법의 사례를 통한 검증)

  • Jeong, Chang-Gyun;Kwak, Dong-Yeop;Park, Du-Hee
    • 한국방재학회:학술대회논문집
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    • 2008.02a
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    • pp.273-276
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    • 2008
  • Equivalent linear method indirectly reflects a variation of shear modulus(G/Gmax) and damping ratio $(\xi)$ by selects mean value of every response analysis. Existing equivalent linear method does not properly consider variation of shear strain along frequencies and uses mean value. Real dynamic soil behavior is affected by shear stiffness and damping ratio. Modified equivalent linear method is developed to consider variation. Modified equivalent linear method can reflects high strain at low frequency and low strain at high frequency by using an easement curve. This study presents propriety of method by case study.

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A study on the Application of Teaching and Learning Theory to Military School Education (교수·학습이론의 군 학교교육 적용에 관한 연구)

  • Lee, Deug-Woon
    • Journal of National Security and Military Science
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    • s.15
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    • pp.87-116
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    • 2018
  • This study is a study on applying the teaching-learning theory of education to military school education. For the purpose, the theories of constructivist, cognitive, and behavioral theories of teaching-learning theory are reviewed and applied to military school education. The application of teaching-learning theory to military school education suggested the application of constructivist, cognitive, and behavioral education methods to each core curriculum and OBC curriculum. In addition, Gagne's 9th instructional design model of teaching and learning theory was applied in school education design. Applying the teaching-learning theory of education to military, discussion of situation education is constructivist education method, L&T education is cognitive education method, mastery education is behavioral education method, teaching principle, applicable education method. Based on the teaching-learning theory presented in this study, it is expected that the design of military school education and the application of education method will achieve the goal of more effective military school education.

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A study on the Project Method Applied in Teaching Clothing and Textiles for Better Learning Effect at a High school (구안법을 응용한 고등학교 가정과 교수방법 개선에 관한 연구)

  • 이춘화;이전숙
    • Journal of Korean Home Economics Education Association
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    • v.2 no.1
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    • pp.29-44
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    • 1990
  • The purpose of this study is to provide more efficient teaching method in teaching home Economics in High School. For this study, total 205 girls’high school students in the 2nd grade, among whom 103 students of 2 classes were in Chonju and 102 students of another 2 classes in Kunsan, were selected. Each one classes apiece of two areas were control group. Lessons on laundering were given to students in Chonju and lessons on arrangement of clothing were given to ones in Kunsan. The project Method of education was applied to the experimental group and the cramming system of education was applied to the control group. The difference of two groups were statistically analysed by t-test after the written examination, Practitude, creative ability and interest test. The results of this study are ; 1. The experimental group was higher in practical attitude, creative ability and interest than the control group. 2. Teaching through project method will give changes to the students’attitude toward their household affaires. 3. Teaching-learning method will be improved if lessons applied by project method is given, as the recognisable effect rises through the positive way of thinking and empirical method.

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A Case Study for the Selection of a Railway Human Reliability Analysis Method (철도 인간신뢰도분석 방법 선정을 위한 사례분석)

  • Jung, Won-Dea;Jang, Seung-Cheol;Wang, Jong-Bae;Kim, Jae-Whan
    • Journal of the Korean Society for Railway
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    • v.9 no.5 s.36
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    • pp.532-538
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    • 2006
  • The railway human reliability analysis(R-HRA) plays a role of identifying and assessing human failure events in the framework of the probabilistic risk assessment(PRA) of the railway systems. This study introduces a case study that was performed to select an appropriate R-HRA method. Three HRA methods were considered in the case study: (1) the K-MRA(THERP/ASEP-based) method, (2) the HEART method, (3) the RSSB-HRA method. Two case events were selected based on the review of the railway incidents/accidents, which include (1) a real-end collision event, which occurred on the railway between the Gomo and Kyungsan stations in 2003, (2) the signal passed at danger(SPAD) events, which are caused from a variety of factors. The three HRA methods were applied to both case events, and then the strengths and limitations of each method were derived and compared with each other from the viewpoint of the applicability of a HRA method to the railway industry.

A Study on the Architectural Design Method for ]Remodeling Vitalization of Apartment Rouses - Based on the Systematization of Emotion-Information for Multi-Dimensional Module Composition of the Unit household - (공동주택 리모델링 활성화를 위한 건축설계 기법에 관한 연구 - 단위세대 다차원모듈 구성을 위한 감성정보 체계화를 중심으로 -)

  • Jung Moo-Woong;Lee Chan-Yong
    • Journal of the Korean housing association
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    • v.16 no.4
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    • pp.121-129
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    • 2005
  • The major goal of this study is drawing design plan factors considering residents' life cycle and life style when remodeling design is needed. By drawing such design factors, the study will propose an alternative remodeling design plan. Such design method was defined as Multi-Dimensional module design method. And constructing data-system based on Multi-Dimensional module was secondary goal in this study. The details are as follows: Based on analysis of Residents' demand for remodeling and features of emotion-design applied to remodeling, the system which is suitable for application in remodeling design method was conducted. Based on the type of construction materials, the level value was set up according to emotion-factor application. Also, by conducting coding operation according to the distinction of construction materials, this study seeks the unit drawing method of information for constructing emotion-information system.

A Study on the Method for Multi-dimensional Module Plan of Apartment Houses for Remodeling - Based on the systematization of Emotion-Information for Multi-Dimensional Module Composition of the Unit household (공동 주택 리모델링 다차원모듈 설계 기법에 관한 연구 - 단위세대 다차원모듈 구성을 위한 감성정보 체계화를 중심으로 -)

  • Lee, Chan-Yong;Kwon, Sung-Sun
    • Journal of The Korean Digital Architecture Interior Association
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    • v.5 no.1
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    • pp.1-8
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    • 2005
  • The major goal of this study is drawing design plan factors considering residents' life cycle and life style when remodeling design is needed. By drawing such design factors, the study will propose an alternative remodeling design plan. Such design method was defined as Multi-Dimensional module design method. And constructing data-system based on Multi-Dimensional module was secondary goal in this study. The details are as follows: Based on analysis of Residents' demand for remodeling and features of emotion-design applied to remodeling, the system which is suitable for application in remodeling design method was conducted. Based on the type of construction materials, the level value was set up according to emotion-factor application. Also, by conducting coding operation according to the distinction of construction materials, this study seeks the unit drawing method of information for constructing emotion-information system.

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