Presentaion at conference, meeting, etc. - Hasegawa Koji

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  1. Stable modeling of free boundaries of an anisotropic plate resonator in the finite difference time domain method using staggered grid with collocated grid points of velocities

    Koji Hasegawa and Ryo Kano，The 43rd Symposium on Ultrasonic Electronics ，Proceedings of Symposium on Ultrasonic Electronics，2022.11.07，kyoto，Japan

  2. 偏角の原理による周回積分路内固有値数算出用確率論的トレース推定

    井ノ口，　長谷川，2024年IEICE総合大会，2024年電子情報通信学会総合大会予稿集，2024.03.04

  3. Stable modeling of free boundaries of an anisotropic Lamé resonator in the finite difference time domain method using Lebedev grid

    K. HAsegawa and R. Kawagoe，The 44th Symposium on　UltraSonic Electronics(USE2023)，Proceedings o fthe 44th Symposium on　UltraSonic Electronics，2023.11.13，Japan

  4. 周回積分型非線形固有値問題の固有値数算出法

    山下陸，長谷川弘治，2022年電子情報通信学会総合大会，2022年電子情報通信学会総合大会講演予稿集，2022.03.15

  5. Computing SAW velocities using the matrix method and the Sakurai-Sugiura method

    Hibiki Yoshida and Koji Hasewaga，超音波エレクトロ二クスの基礎と応用に関するシンポジウム，超音波エレクトロ二クスの基礎と応用に関するシンポジウム講演論文集2021，2021.10.25，Japan

  6. AT-cut水晶板周期空孔によるエネルギー閉じ込め共振子

    角田有弥，長谷川弘治，電子情報通信学会2021年総合大会，2021年総合大会予稿集，2021.03.09

  7. 周期構造超音波導波路の有限要素法を用いた複素伝搬定数算出

    野嶽秀介,長谷川弘治，電子情報通信学会2021年総合大会，2021年総合大会予稿集，2021.03.09

  8. ”導波路の有限要素モデル行列を用いた伝搬定数の微分法

    山本直弥，長谷川弘治，電子情報通信学会エレクトロニクスシミュレーション研究会，電子情報通信学会技術研究報告EST，2021.01.22

  9. Stable modeling of free boundaries in the finite-difference time-domain method using staggered grids with collocated grid points of velocities

    Y.Koda and K.Hasegawa，第41回超音波エレクトロニクスの基礎と応用に関するシンポジウム，第41回超音波エレクトロニクスの基礎と応用に関するシンポジウム予稿集，2020.11.25，Japan

  10. Extraction of all eigenmodes propagating in an optical fiber from transcendental equations by the Sakurai-Sugiura method

    J.Takahashi, S.Sato, and K.Hasegawa，PIERS2017 Singerpore，Proceedings of PIERS2017 Singerpore ，2017.11.19，Singerpore，Singapore

  11. Computation of differential mode group delay in a few mode optical fiber from transendental equations by the automatic differentiation and the Sakurai-Sugiura method

    N.Mizukami, S.Sato, and K.Hasegawa，Proceedings of PIERS 2017 Singerpore，2017.11.19，Singerpore，Singapore

  12. An analysis of eigenmodes propagating on a holey fiber with the multipole method and the Sakurai-Sugiura method

    Y.Tsushima, S.Sato, and K.Hasegawa，Proceedings of PIERS2017 St Petersburg，2017.05.22，St Petersburg，Russian Federation

  13. A Trefftz method formultion for eigenmode analysis of cyrindrical optical fibers

    S.Sato, and K.Hasegawa，Proceedings of PIERS2017 St Petersburg，2017.05.22，Russian Federation

  14. 電磁波導波路の対称あるいは反対称固有モードのハイブリッドトレフツ有限要素解析

    森田，佐藤，長谷川，嶋田，JASCOME2014シンポジウム，(p.49-54)，2014.12

  15. REMOVING NONPHYSICAL SOLUTIONS OF ELECTROMAGNETIC WAVEGUIDE NONLINEAR EIGENVALUE PROBLEMS (BY USING THE EIGENVALUES OR THE SENSITIVITY OF THE EIGENVALUE OF THE LINEARIZED PROBLEMS)

    S.Sato, Y.Morita, K.Hasegawa and T.Shimada，ICOME2012（the 4th Asia-Pacific International Conference on Computational Methods in Engineering），JASCOME，Abstracts of the 4th Asia-Pacific International Conference on Computational Methods in Engineering (ICOME 2012)，2012.12，kyoto

  16. Perfectly Matched Layers of Elastic Wave Propagation in a Piezoelectric Solid in the Frequency Domain

    K. Hasegawa and S. Sato，33th Symposium on ultrasonic electronics，Proceedings of symposium on ultrasonic electronics，2012.11，chiba, Japan，Japan

  17. An Analysis of Lamé Mode Resonators by Finite Difference Time Domain Method

    T. Yasui, K. Hasegawa and K. Hirayama，33th symposium on ultrasonic electronics，Proceedings of symposium on ultrasonic electronics，2012.11，chiba，Japan

  18. Numerical Dispersion of Elastic Wave Propagation in Finite Difference Time Domain Analysis

    T. Shimada, K.Hasegawa and S. Sato，33th Symposium on ultrasonic electronics，Proceedings of symposiumn on ultrasonic electronics，2012.11，chiba，Japan

  19. Grids in the Finite-Difference Time-Domain Method for Elastic Waves in Solids

    Koji Hasegawa†, Takao Shimada, and Liu Hongmei，The 32nd Symposiumn on Ultrasonic Electronics，2011.11，kyoto，Japan

  20. Discretized Wavenumber Analysis of Reflection Powers of Elastic Waves from a Perfectly Matched Layer in the Finite Element Method

    Ｔ．Ｓｈｉｍａｄａand K.Hasegawa，The 31th symposium on UltraSonic Electronics，日本応用物理学会，Ｐｒｏｃｅｅｄｉｎｇｓ of the 31th symposium on UltraSonic Electronics，2010，Tokyo，Japan

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