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Home / Journals / ICCES / Vol.2, No.2, 2007
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  • Open AccessOpen Access

    ABSTRACT

    Probabilistic Neural Network for Predicting the Stability numbers of Breakwater Armor Blocks

    Doo Kie Kim1, Dong Hyawn Kim2, Seong Kyu Chang1, Sang Kil Chang1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.2, No.2, pp. 35-40, 2007, DOI:10.3970/icces.2007.002.035
    Abstract The stability numbers determining the Armor units are very important to design breakwaters, because armor units are designed for defending breakwaters from repeated wave loads. This study presents a probabilistic neural network (PNN) for predicting the stability number of armor blocks of breakwaters. PNN used the experimental data of van der Meer as train and test data. The estimated results of PNN were compared with those of empirical formula and previous artificial neural network (ANN) model. The comparison results showed the efficiency of the proposed method in the prediction of the stability numbers in spite More >

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    1297

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    995

  • Open AccessOpen Access

    ABSTRACT

    On the efficiency of generic BE substructuring algorithms based on Krylov solvers

    F.C. Araújo1, L.J. Gray2
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.2, No.2, pp. 41-46, 2007, DOI:10.3970/icces.2007.002.041
    Abstract This paper is concerned with the solution of boundary-element models based on substructuring. Structured matrix-vector products and the matrix-copy option are proposed to increase the efficiency of algorithms based on Krylov solvers. The former technique was designed to avoid the excessive number of conditional tests during solver iterations, and the latter one, to avoid the repeated calculation of coefficient matrices for identical subregions. Potential applications of the algorithm to composite materials, and to develop parallel codes, are noted. More >

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    1350

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    948

  • Open AccessOpen Access

    ABSTRACT

    Normal deflection of a notched plate under uniform tensile stress

    J.W. Choi1, S.H. Yoo1, J.B. Kim1, E.J. Park1
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.2, No.2, pp. 47-52, 2007, DOI:10.3970/icces.2007.002.047
    Abstract A semi-analytical solution by beam theory and finite element solutions are obtained for normal deflection of a plate with a surface crack under tensile stress. The semi-analytical solution consists of the deflection of a beam and the half-space or full-space solution. Also finite element solutions are obtained and compared with these analytical solutions. These solutions can be used as reference data for non-destructive evaluation of a surface crack. More >

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    888

  • Open AccessOpen Access

    ABSTRACT

    Multi-Component Modal Analysis of Protein Structure

    G. Yoon1, K. Bong2, J. Kim3, I.H. Ahn4, K. Eom5, S. Na6
    The International Conference on Computational & Experimental Engineering and Sciences, Vol.2, No.2, pp. 53-60, 2007, DOI:10.3970/icces.2007.002.053
    Abstract This paper presents multi-component mode methodology applicable to biomolecular structures for understanding the dynamics of proteins. Even though the conventional normal mode analysis has been contributed for analyzing the dynamics and thermal fluctuations of proteins, it frequently encounters with the computational prohibition for large proteins due to memory requirement. To overcome the conventional computational limitations, the drawback motivates one to develop various model reduction methods, which reduces the degrees of freedom of the full model so as to decrease the computational expense, while the computational accuracy is maintained. Our results demonstrate that the multi-component modal More >

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    966

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