• 제목/요약/키워드: computation

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진화연산에 의한 공학 데이터의 활용 (Practical Utilization of Engineering Data based on Evolutionary Computation Method)

  • 이경호;연윤석;양영순
    • 한국전산구조공학회:학술대회논문집
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    • 한국전산구조공학회 2005년도 춘계 학술발표회 논문집
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    • pp.317-324
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    • 2005
  • Korean shipyards have accumulated a great amount of data. But they do not have appropriate tools to utilize the data in practical works. Engineering data contains experts' experience and know-how In its own. It is very useful to extract knowledge or information from the accumulated existing data by using datamining technique. This paper treats an evolutionary computation method based on genetic programming (GP), which can be one of the components to realize datamining.

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Wire-Grid 기법을 이용한 안테나특성 예측 (Prediction of antenna characteristics using Wire-Grid method)

  • 조웅희;간종만;이응주
    • 한국전자파학회지:전자파기술
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    • 제3권2호
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    • pp.10-15
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    • 1992
  • The electromagentic characteristics of antennas in the complicated metallic structures were analyzed using the electric field integral equation. The accurancy of computer program was confirmed by comparing the computation result with NELC brass model study. And computation result of antenna characteristics in metallic structures was in good argreement with our measuring result.

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얇은 정사각형 용기내의 스핀-업 유동에 관한 연구 (The Study for Spin-up Flows in a Shallow Quadrangular Container)

  • 박재현;서용권
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2001년도 추계학술대회 논문집
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    • pp.207-212
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    • 2001
  • In this study, spin-up flows in a shallow rectangular container are analysed by using three-dimensional computation. We compared our results with those obtained by quasi three-dimensional computation. Our results show that quasi S-D solustion is not accurate enough and it provides far less damped solution.

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Computation and Smoothing Parameter Selection In Penalized Likelihood Regression

  • Kim Young-Ju
    • Communications for Statistical Applications and Methods
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    • 제12권3호
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    • pp.743-758
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    • 2005
  • This paper consider penalized likelihood regression with data from exponential family. The fast computation method applied to Gaussian data(Kim and Gu, 2004) is extended to non Gaussian data through asymptotically efficient low dimensional approximations and corresponding algorithm is proposed. Also smoothing parameter selection is explored for various exponential families, which extends the existing cross validation method of Xiang and Wahba evaluated only with Bernoulli data.

통신지연이 있는 분산처리의 최적화 (Optimal Distributed Computation with Communication Delays)

  • 김형중;지규인;이장규
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1991년도 하계학술대회 논문집
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    • pp.748-752
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    • 1991
  • Tree network consisting of communicating processors is considered. The objective is to minimize the computation time by distributing the processing load to other nodes. The effect of the order of load distribution on the processing time is addressed. An algorithm which optimally determines the order of load distribution is developed. It is shown that the order depends only on the channel capacity between nodes but not on the computing capability of each node.

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닫힘모멘트를 받는 우각부의 보강철근량 산정에 관한 연구 (A Study on Reinforcing Bar Computation of Corner Joint in Closing Moment)

  • 이명곤;정제평;모귀석;김우
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.239-244
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    • 2002
  • The reinforcing bar computation have to be reflected stress distribution and geometrical condition of a comer joint when the closing moment acted at comer joint. This study analyzes stress distribution of a corner joint with statically determinate truss model. Compared with FEM analysis and result of truss model suggested design method consider strengthening efficiency of main reinforcement.

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THE COMPUTATION OF POSITIVE SOLUTIONS FOR A BOUNDARY VALUE PROBLEM OF THE LINEAR BEAM EQUATION

  • Ji, Jun;Yang, Bo
    • 대한수학회논문집
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    • 제32권1호
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    • pp.215-224
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    • 2017
  • In this paper, we propose a method of order two for the computation of positive solutions to a boundary value problem of the linear beam equation. The method is based on the Power method for the eigenvector associated with the dominant eigenvalue and the Crout-like factorization algorithm for the banded system of linear equations. It is extremely fast due to the linear complexity of the linear system solver. Numerical result of a test problem is included.

광속전달법에서의 효율적인 Form Factor 계산방법에 관한 연구 (The Study on form Factor Computation Methods in the Luminous Flux Transfer Method)

  • 최안섭
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2001년도 학술대회논문집
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    • pp.17-22
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    • 2001
  • This paper gave a review of form factor computations in the luminous flux transfer method and practical application of DiLaura's recently developed form factor computation. A systematic analysis of how the results of a contour integration solution differ from those of existing numeric solutions were undertaken with a developed computer simulation program. Various situations between sending and receiving surfaces were considered, including the facing, size, and distance between surfaces.

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Computing transient flows with high elasticity

  • Roger I. Tanner;Xue, S-C
    • Korea-Australia Rheology Journal
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    • 제14권4호
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    • pp.143-159
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    • 2002
  • Although much progress has been made in the computation of Eulerian steady flows with high viscoelasticity, less work has been done for the case of transient flows. Because of their importance in injection moulding, blow moulding and other forming processes, as well as their Intrinsic interest, we believe more attention should be focussed in this area. Hence in this paper we review progress in unsteady flow computations with high elasticity, and show some new results in this area.

NUMERICAL SOLUTION OF EQUILIBRIUM EQUATIONS

  • Jang, Ho-Jong
    • 대한수학회논문집
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    • 제15권1호
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    • pp.133-142
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    • 2000
  • We consider some numerical solution methods for equilibrium equations Af + E$^{T}$ λ = r, Ef = s. Algebraic problems of this form evolve from many applications such as structural optimization, fluid flow, and circuits. An important approach, called the force method, to the solution to such problems involves dimension reduction nullspace computation for E. The purpose of this paper is to investigate the substructuring method for the solution step of the force method in the context of the incompressible fluid flow. We also suggests some iterative methods based upon substructuring scheme..

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