• Title/Summary/Keyword: Macro-analysis

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"맹자" "호연지기 장"의 텍스트언어학적 접근 (A Text Linguistic Approach to the Chapter Hoyeonjigi of Mencius)

  • 이석규
    • 인문언어
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    • 제5권
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    • pp.127-163
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    • 2003
  • This thesis analyzes the Chapter "Hoyeonjigi(浩然之氣)" of Mencius(孟子), using text linguistics theory and reading theory of Korean. In this process the model of macro-structure #1∼5 are presented, according to Vandijk′s rules of macro-structure; Auslassen, Selektierne, Generalisieren, Konstruieren odor Integrieren. As a result, this certifies; First, macro-structure could make arbitrarily a several steps of macro-structure by types of text or purpose of analysis. Second, macro-structure applies various cognitive mechanisms of outer world as well as inner world. Third, a text with profound symbolism could be figured as a two-or threefolded symbolic structure. At the same time, macro-structure enables the clearer analysis of the content of the Chapter to verify the following; first, Hoyeinjigi itself is the best measure of developing "Imperturbable Mind(不動心)" Second, benevolence-righteousness(仁義) and wisdom(智) would be reached by cultivating Hoyeonjigi. Third, Mencius′ own view of language is well expressed in "Jieon(知言)", which is not only a condition for Imperturbable Mind, but also the Oriental view of language focused especially on listening in terms of language usage, not language analysis. This Mencius′ view of language has a thread connection with that of Oriental′s.

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X-ray CT monitoring of macro void development in mortars exposed to sulfate attack

  • Tekin, Ilker;Birgul, Recep;Aruntas, Huseyin Y.
    • Computers and Concrete
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    • 제21권4호
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    • pp.367-376
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    • 2018
  • This study reports the results of nondestructive monitoring of macro void developments in mortars manufactured with both ordinary Portland cement and sulfate resistant cement. Two types of curing were utilized; tap water curing and another curing environment that contains 5% $Na_2(SO_4)$ solution. Being the primary objective of this study, macro void developments of the mortar specimens were monitored by X-ray Medical Computerized Tomography. Compressive strength tests and water absorption tests were conducted on specimens that were kept in both curing environments for a duration of 560 days. Data analyses yielded consistent results among the three tests used in this experimental study. Macro void ratios of mortars decreased at the beginning of experiments for a certain period; afterwards, macro void ratios increased. The objective of this study was accomplished as anticipated since X-CT image analysis was able to nondestructively monitor macro void development process in cement mortars.

SAS macro faces를 사용한 체르노프 얼굴 분석에 의한 좋은 은행 평가 (Good Bank Evaluation by Chernoff Face Analysis using SAS macro faces)

  • 이정은;정혜선;김민지;김지현;손영숙
    • 응용통계연구
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    • 제26권6호
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    • pp.959-975
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    • 2013
  • Friendly (1992)의 SAS macro faces 프로그램은 다변량 시각화 표현법 중 하나인 체르노프 얼굴 분석을 위한 프로그램이다. 본 연구에서는 faces에서 사용된 18개 얼굴 특징 변수를 살펴보고 현 시대의 흐름에 맞는 좋은 얼굴의 정의에 따라 수정된 프로그램을 제시하였다. 또한 은행의 안정성, 소비자 만족도, 건전성, 수익성을 나타내는 11개 은행경제지표에 기초한 체르노프 얼굴분석을 통하여 국내 15개 은행에 대해 소비자 입장에서 좋은 은행 평가를 수행하였다.

매크로요소를 이용한 프리스트레스트 콘크리트 박스거더 교량의 비선형 해석 (Nonlinear Analysis of Prestressed Concrete Box Girder Bridges Using Macro Element)

  • 오병환;이명규
    • 콘크리트학회지
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    • 제11권1호
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    • pp.77-87
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    • 1999
  • 일반적으로 프리스트레스트 콘크리트 박스거더교량의 설계에서는 단순화된 단면에 대하여 탄성이론에 근거하여 설계를 수행하고 있다. 이러한 단순화에 따른 제약조건을 개선하기 위해서 본 연구에서는 변단면의 프리스트레스트 콘크리트 박스거더교량을 해석하기 위한 매크로요소를 사용하였다. 해석프로그램에서 재료 비선형모델을 사용하여 극한하중 해석이 가능하도록 하였다. 또한, 교량의 장기거동을 예측하기 위해서 재료의 시간의존적 해석모델을 프로그램에 적용하여 교량의 장기 거동해석을 수행할 수 있게 하였다. 따라서, 재료비선형 모델과 시간의존 해석을 포함하는 비선형 매크로요소는 임의의 형상을 가진 프리스트레스트 박스거더 교량의 실제적인 거동해석에 유용하게 사용할 수 있을 것으로 사료된다.

유한요소법에 의한 전기기계의 자속분포해석을 위한 MACRO 공선요소 적용에 관한 연구 (A Study on the Application of Macro Air-gap Element for Magnetic Flux Distribution Analysis of Electric Machinery by F.E.M.)

  • Dal-Ho Im
    • 대한전기학회논문지
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    • 제35권11호
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    • pp.479-486
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    • 1986
  • It is necessary to consider a rotor movement in dynamic analysis on the flux distribution of electric machinery by FEM. Therefore, if air-gap domain was subdivided into triangular elements, computation results contain errors due to variation of element shape in air-gap because the nodal points corresponding to the rotor are displaced in analyzing domain for the time difference. In order to reduce this errors, the paper presents a application of a Macro Air-gap Element that interpolation function is obtained analytically and a means to join it with linear triangular elements in the rotating machine or in the linear machine. At the end of paper, setting up analytic domain model, it compares analytic solution with the computation results of Macro Air-gap Element appliction and that of linear triangular element subdivision only to each cases of nodal displacement. And it carries out that errors due to variation of element shape are reduced effectively by application of a Macro air-gap element.

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매크로 기능을 이용한 선박 격자의 자동 생성 기법 (AUTOMATIC MESH GENERATION AROUND SHIP HULL USING THE MACRO)

  • 이주현;이신형
    • 한국전산유체공학회:학술대회논문집
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    • 한국전산유체공학회 2009년 추계학술대회논문집
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    • pp.71-76
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    • 2009
  • The research to predict the resistance performance of the ship using the CFD analysis is increasing. For the CFD numerical analysis the computational mesh, which is proper to computational model, has to be made before the analysis is begun. In the parametric study, even though the deformation of each case is not very sharp, the whole computational mesh should be regenerated according to the conventional way. Hence, lots of effort is needed to repeated mesh generation work. To solve these problems, the automatic mesh generation method using the macro function of commercial CAD program and mesh generation program is introduced in this study. First, in the CAD program, by using the macro function and putting the deformation rate of bow and stern in lengthwise, the repeated modeling work is performed automatically. Next, the generated geometries are read by the mesh generation program and the proper mesh for the geometry is created automatically also using the macro function. The hybrid mesh which has unstructured grid near the bow and stern and structured grid in the remaining part of domain is used. The verification of the developed method is done by applying the method to predict the resistance performance of the podded propulsion cruise ship of the Daewoo Shipbuilding & Marine Engineering (DSME) in the cases of different length of bow and stern and pod set in different position. The author believes that the introduced method can help to make the database to optimize the resistance performance of the ship in various cases can be constructed without difficulty.

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우리나라 소비자 특성별 체감경기와 거시경제지표 간의 관계 분석 (Analysis on the Relationship between Consumer Sentiment and Macro-economic Indices by Consumer's Characteristics)

  • 김영준;신석하
    • 한국산학기술학회논문지
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    • 제17권11호
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    • pp.474-482
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    • 2016
  • 본고에서는 소비자들이 느끼는 체감경기가 경제성장률 등 통상적인 거시경제지표와 괴리될 수 있으며, 특히 소득, 연령, 종사상의 지위 등 각 소비자들의 특성에 따라 차이가 난다는 점에 주목하여 소비자의 체감경기에 영향을 미치는 요인이 무엇인지 살펴보았다. 소비자들의 체감경기를 나타내는 변수로는 한국은행의 소비자동향조사를 통해 파악되는 현재생활 형편 소비자심리지수(CSI)를 사용하였으며 전반적인 실물경기 상황을 나타내는 지표로는 국내총생산(계절조정) 전기대비 증가율을 이용하였다. 이 외에 개별 소비자들의 체감경기에 영향을 미치는 요인으로 임금, 구인배율, 주택매매가격, 주가지수, 생활물가지수, 가계부채상환부담 등을 고려하였는데 분석결과 상기한 거시경제지표들이 소비자들의 체감경기에 상당한 영향을 미치는 것으로 확인되었다. 특히 소득, 연령, 종사상의 지위 등 소비자의 특성별로 그룹을 나누어 분석하여 본 결과, 상기한 거시경제지표들이 체감경기에 영향을 미치는 정도는 소비자 그룹별로 차이가 있는 것으로 확인되었다. 또한 소비자들이 느끼는 체감경기가 경제성장률로 대표되는 실물경기 지표와 크게 괴리되었던 과거의 경우에도 임금, 구인배율 등 상기한 거시경제지표들을 추가적으로 고려하면 이러한 괴리의 상당 부분을 설명할 수 있음을 확인할 수 있었다.

철근콘크리트 벽식 구조물에서 전단벽의 탄소성 해석용 모델화 방법의 검토 (On Modeling for Nonlinear Analysis of Shear Wall Element in Shear Wall Structures)

  • 전대한
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2000년도 가을 학술발표회논문집(I)
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    • pp.291-296
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    • 2000
  • In this paper a relatively simple and reliable wall models are investigated, which are suitable to be efficiently incorporated in a practical nonlinear seismic analysis of reinforced concrete shear wall structural systems. Four types of analogous frames have been selected for the elastic stress analysis. Three types of macro-elements model which include wide-column model, truss model and Kabeyasawa model, are chosen for the use in nonlinear analysis. A numerical analysis is carried out for six stories plane coupled wall structure. Analysis results indicate that macro-elements wall model is effective and suitable for simulating stress in elastic analysis. In inelastic analysis, the yielding strength have little effect on different wall model, and the effect on post-yielding stiffness in story shear-drift relationship depend on force-deformation properties of macro-elements.

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Seismic response and damage development analyses of an RC structural wall building using macro-element

  • Hemsas, Miloud;Elachachi, Sidi-Mohammed;Breysse, Denys
    • Structural Engineering and Mechanics
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    • 제51권3호
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    • pp.447-470
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    • 2014
  • Numerical simulation of the non-linear behavior of (RC) structural walls subjected to severe earthquake ground motions requires a reliable modeling approach that includes important material characteristics and behavioral response features. The objective of this paper is to optimize a simplified method for the assessment of the seismic response and damage development analyses of an RC structural wall building using macro-element model. The first stage of this study investigates effectiveness and ability of the macro-element model in predicting the flexural nonlinear response of the specimen based on previous experimental test results conducted in UCLA. The sensitivity of the predicted wall responses to changes in model parameters is also assessed. The macro-element model is next used to examine the dynamic behavior of the structural wall building-all the way from elastic behavior to global instability, by applying an approximate Incremental Dynamic Analysis (IDA), based on Uncoupled Modal Response History Analysis (UMRHA), setting up nonlinear single degree of freedom systems. Finally, the identification of the global stiffness decrease as a function of a damage variable is carried out by means of this simplified methodology. Responses are compared at various locations on the structural wall by conducting static and dynamic pushover analyses for accurate estimation of seismic performance of the structure using macro-element model. Results obtained with the numerical model for rectangular wall cross sections compare favorably with experimental responses for flexural capacity, stiffness, and deformability. Overall, the model is qualified for safety assessment and design of earthquake resistant structures with structural walls.