Koyama Daisuke 小山大介

… Alternative Names

KOYAMA Daisuke 小山大介

小山大介コヤマダイスケ

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Researcher Number	60251708
Other IDs
Affiliation (Current)	2025: 電気通信大学, 大学院情報理工学研究科, 助教
Affiliation (based on the past Project Information) *help	2019 – 2021: 電気通信大学, 大学院情報理工学研究科, 助教 2011 – 2013: 電気通信大学, 情報理工学(系)研究科, 助教 2011: 電気通信大学, 情報理工学研究科, 助教 2010 – 2011: 電気通信大学, 大学院・情報理工学研究科, 助教 2007 – 2009: 電気通信大学, 電気通信学部, 助教 … More 2006: 電気通信大学, 電気通信学部, 助手 2002 – 2004: 電気通信大学, 電気通信学部, 助手 1998 – 2000: 電気通信大学, 電気通信学部, 助手 1994 – 1995: 電気通信大学, 電気通信学部, 助手 Less
Review Section/Research Field	Principal Investigator Basic Section 12040:Applied mathematics and statistics-related / General mathematics (including Probability theory/Statistical mathematics) Except Principal Investigator General mathematics (including Probability theory/Statistical mathematics) / General mathematics (including Probability theory/Statistical mathematics) / Engineering fundamentals
Keywords	Principal Investigator 有限要素法 / 数理解析 / 不連続ガレルキン法 / 非適合要素 / 混合法 / 共役傾斜法 / 内部ペナルティー法 / 非適合型有限要素法 / ICCG法 / CG法 … More / 正定値対称行列の条件数 / 事前誤差評価 / 事前差異評価 / 重調和方程式 / 内部ペナルティ法 / 非適合有限要素法 / 線形水波散乱問題 / 音響散乱問題 / 誤差解析 / ベッセル関数 / 多重散乱問題 / ヘルムホルツ方程式 / シュワルツ法 / 外部ヘルムホルツ問題 / 外部問題 / コルンの不等式 / 平面弾性問題 / 波動問題 / 不連続ガレルキン有限要素法 / 最適化シュワルツ法 / 領域分割法 … More Except Principal Investigator 有限要素法 / ラドン変換 / Fundamental solution method / 基本解近似解法 / ヘルムホルツ方程式 / 翼の等角写像 / 代用電荷法 / ニューラルネットワーク / ディリクレ・ノイマン写像 / PML / FDTD法 / アンテナ / 音声生成 / 移流拡散方程式 / 音場・構造体連成系 / 有限要素解析 / Articulation model / Fictitious domain method / Voice generation / Dirichlet to Neumann mapping / Variational formula of eigenvalue / Finite element method / Exterior Helmholtz problem / 反復解法 / 超音波 / 調音モデル / 仮想領域法 / 固有値変分公式 / 外部ヘルムホルツ問題 / Upwinding technique and method of characteristic curve / Multi layer neural network / Error estimation constants in FEM / Vocal generation problems / Conformal mapping of wing / 2D exterior reduced wave problems / International exchange researchers / 有限要素流体計算 / 無限領域向有限要素法 / ニューラルネットワーク変分同化法 / 円外帰着波動ノイマン境界条件問題 / 無限領域ヘルムホルツ問題 / 水の波散乱シミュレータ / ニュラルネットワーク / レーリー・ベナール方程式の有限要素スキーム / 2流体問題質量保存有限要素スキーム / 三次元ヘルムホルツ問題の仮想領域法・有限要素近似 / 音声生成問題有限要素数値シミュレーション / 基本解近似解法誤差評価 / ディリクレ境界条件円外帰着波動問題 / 風上近似・特性曲線近似による流れ問題有限要素数値解法 / 逆問題の多層ニューラルネットワーク解法 / 音声発声の有限要素解析 / 二次元外部帰着波動問題の有限要素-基本解近似結合解法 / 円外帰着波動問題基本解近似解法の誤差評価 / 風上技法と特性曲線法 / 多層ニューラルネットワーク / 誤差評価定数の上界決定 / 音声生成声問題 / 二次元外部帰着波動問題 / 国際研究者交流 / Data Assimilation / Artificial Boundary Condition / Helmholtz Equation / Poisson Equation / Collocation Method / Radon Transformation / Computed Tomography / Neural Network / データ同化 / 人工境界条件 / ポアソン方程式 / 選点法 / コンピュータトモグラフィ / Newmark's method / Runge-Kutta method / Neural network / 2 dimensional exterior Helmholtz problem / 2 dimensional exterior Laplace problem / Finite Element-Fundamental Solution combined method / Finite Element-Charge Simulation combined method / Steklov operator / 二次元ラプラス外部問題 / ニューマーク法 / ルンゲクッタ法 / 二次元外部ヘルムホルツ問題 / 二次元外部ラプラス問題 / 有限要素-基本解近似結合解法 / 有限要素-代用電荷結合解法 / スチェクロス作用素 / 多重散乱問題 / 高伝導度モデル / エアリード / 波動伝播 / 高電導度モデル / マルチコア / DtN有限要素法 / 数値計算 / エッジトーン / 複素共鳴固有値 / マルチコア分散並列 / FDTD / 波動伝搬 / 遺伝的アルゴリズム / 地球シミュレータ / 境界要素法 / 最適化アルゴリズム / 並列計算手法 / 声道形状設計 / 基本解解法 / 大規模固有値計算 / 形状設計 / 波動伝播現象 / スチュクロフ作用素 / 領域分割法 / 高次放射条件 / ニューマークのベータ法 / 遅延微分方程式 / Tayler-Couette流 / スチェクロフ作用素 / 磁気流体スペクトル Less

Application of interior penalty methods to mixed finite element method using nonconforming elementsPrincipal Investigator
- Principal Investigator
  
  Koyama Daisuke
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12040:Applied mathematics and statistics-related
- Research Institution
  The University of Electro-Communications
Study on finite element methods for wave problems in unbounded domains and development of associated FEM softwaresPrincipal Investigator
- Principal Investigator
  
  KOYAMA Daisuke
- Project Period (FY)
  2011 – 2013
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
Study on numerical methods of wave propagation phenomena and its applications to information and energy transmission problems
- Principal Investigator
  
  KAKO Takashi
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
Numerical methods for wave propagation phenomena in unbounded region and its applications to shape design problems
- Principal Investigator
  
  KAKO Takashi
- Project Period (FY)
  2006 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
Finite Element Methods for Huge Domain and Domain Decomposition Methods with Related Topics
- Principal Investigator
  
  USHIJIMA Teruo
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
Study of Numerical Methods for Wave Propagation Phenomena in Unbounded Region and its Applications
- Principal Investigator
  
  KAKO Takashi
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
CT image reconstruction method for small amount of projection data and differential equation solution method by neural network
- Principal Investigator
  
  TAKEDA Tatsuoki
- Project Period (FY)
  1999 – 2000
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Engineering fundamentals
- Research Institution
  The University of Electro-Communications
Finite Element Method for Huge Domains and Related Topics
- Principal Investigator
  
  USHIJIMA Teruo
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
振動・波動現象の数理解析と数値解析
- Principal Investigator
  
  加古孝
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications
微分方程式の解の構造の解析とその応用
- Principal Investigator
  
  KAKO Takashi
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  The University of Electro-Communications

All 2021 2014 2013 2012 2011 2010 2009 2008 2007 2003

All Journal Article Presentation Book

[Book] 計算力学理論ハンドブック2010
- Author(s)
  田端正久, 萩原一郎(監訳), 第3章訳:小山大介
- Total Pages
  736
- Publisher
  朝倉書店
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Strong L^p convergence associated with Rellich-type discrete compactness for ciscontinuous Galerkin FEM2014
- Author(s)
  Fumio Kikuchi and Daisuke Koyama
- Journal Title
  
  JSIAM Letters
  
  Volume: Vol.6(掲載確定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23540127
[Journal Article] An a priori error estimate of the Dirichlet-to-Neumann finite element method for multiple scattering problems2014
- Author(s)
  Daisuke Koyama
- Journal Title
  
  Japan Journal of Industrial and Applied Mathematics
  
  Volume: Vol.31 Issue: 1 Pages: 165-192
- DOI
  10.1007/s13160-013-0129-x
- NAID
  210000162843
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23540127
[Journal Article] 停留した物体による線形水波散乱問題に対するDtN有限要素法の誤差解析2012
- Author(s)
  小山大介，瀬戸秀幸
- Journal Title
  
  日本応用数理学会論文誌
  
  Volume: 22
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23540127
[Journal Article] 停留した物体による線形水波散乱問題に対するDtN 有限要素法の誤差解析2012
- Author(s)
  小山大介, 瀬戸秀幸
- Journal Title
  
  日本応用数理学会論文誌
  
  Volume: 22巻 Pages: 341-382
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23540127
[Journal Article] A parallel Schwarz method for multiple scattering problems2011
- Author(s)
  Daisuke Koyama
- Journal Title
  
  DDM in Science and Engineering XIX, Lecture Notes in Computational Science and Engineering
  
  Pages: 351-358
- URL
  http://www.ddm.org/DD19/proceedings/numerik.mi.fu-berlin.de/DDM/DD19/Contributed_Koyama.pdf
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Well-posedness of the Helmholtz problem with the multiple DtN boundary condition2010
- Author(s)
  Daisuke Koyama
- Journal Title
  
  Adv in Mathematical Sciences and Applications
  
  Volume: 20巻2号 Pages: 349-370
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Superconvergence of a finite element method for the Webster equation2010
- Author(s)
  Zhi-Guang Xiong, Takashi Kako, Daisuke Koyama
- Journal Title
  
  Numer.Math.J.Chinese Univ
  
  Volume: 32巻2号 Pages: 106-117
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Well-posedness of the Helmholtz problem with the multiple DtNboundary condition2010
- Author(s)
  Daisuke Koyama
- Journal Title
  
  Adv. in Mathematical Sciences and Applications
  
  Volume: Vol.20-2 Pages: 349-370
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Superconvergence of a finiteelement method for the Webster equation2010
- Author(s)
  Zhi-Guang Xiong, Takashi Kako and Daisuke Koyama
- Journal Title
  
  Numer. Math. J. Chinese Univ
  
  Volume: Vol.32-2 Pages: 106-117
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] A parallel Schwarz method for multiple scattering problems2010
- Author(s)
  Daisuke Koyama
- Journal Title
  
  The proceedings of the 19th International Conference on Domain Decomposition Methods (掲載予定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Error estimates of the finite element method for the exterior Helmholtz problem with a modified DtN boundary condition2009
- Author(s)
  Daisuke Koyama
- Journal Title
  
  Journal of Computational and Applied Mathematics 232
  
  Pages: 109-121
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Error estimates of the finite element method for the exterior Helmholtz problem with a modified DtNboundary condition2009
- Author(s)
  Daisuke Koyama
- Journal Title
  
  Journal of Computational and Applied Mathematics
  
  Volume: Vol.232 Pages: 109-121
- URL
  http://www.sciencedirect.com/science/article/pii/S0377042708005505
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21540116
[Journal Article] Quantum Synchronization Effects in Intrinsic Josephson Junctions2008
- Author(s)
  M. Machida, T. Kano, S. Yamada, M. Okumura, T. Imamura, and T. Koyama
- Journal Title
  
  Physica C Vol.468
  
  Pages: 689-694
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] Error estimates of the finite element method for the exterior Helmholtz problem with a modified DtN boundary condition2008
- Author(s)
  D. Koyama
- Journal Title
  
  J. of Computational and Applied Mathematics (in press)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] Error estimates of the finite element method for the exterior Helmholtz problem with a modified DtN boundary condition, J2008
- Author(s)
  D. Koyama
- Journal Title
  
  of Computational and Applied Mathematics (in press)
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] Quantum Synchronization Effects in Intrinsic Josephson Junctions2008
- Author(s)
  M. Machida, T. Kano, S. Yamada, M. Okumura, T. Imamura, and T. Koyama
- Journal Title
  
  Physica C (in press)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] Error estimates of the DtN finite element method for the exterior Helmholtz problem2007
- Author(s)
  Koyama, D.
- Journal Title
  
  Journal of Computational and Applied Mathematics 200・1
  
  Pages: 21-31
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] Error estimates of the DtN finite element method for the exterior Helmholtz problem2007
- Author(s)
  D. Koyama
- Journal Title
  
  Journal of Computational and Applied Mathematics Vol.20
  
  Pages: 21-31
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540114
[Journal Article] A mixed type finite element approximation for radiation problems using fictitious domain method2003
- Author(s)
  Nasir, H.M., Kako, T., Koyama, D.
- Journal Title
  
  Journal of Computational and Applied Mathematics Vol.152
  
  Pages: 377-392
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14540106
[Journal Article] Application of a fictitious domain method to 3D Helmholtz problems2003
- Author(s)
  Koyama, D.
- Journal Title
  
  Suui-kaiseki-kenkyu-sho-Kokyuroku Vol.1320
  
  Pages: 37-46
- NAID
  110000167314
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14540106
[Journal Article] Application of a fictitious domain method to 3D Helmholtz problems2003
- Author(s)
  Koyama, D.
- Journal Title
  
  京都大学数理解析研究所講究録 1320
  
  Pages: 37-46
- NAID
  110000167314
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14540106
[Journal Article] A mixed type finite element approximation for radiation problems using fictitious domain method2003
- Author(s)
  NASIR, Haniffa Mohamed, KAKO, Takashi, KOYAMA, Daisuke
- Journal Title
  
  Journal of Computational and Applied Mathematics Vol.152
  
  Pages: 377-392
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14340031
[Journal Article] A mixed type finite element approximation for radiation problems using fictitious domain method2003
- Author(s)
  Nasir, H.M., Kako, T., Koyama, D.
- Journal Title
  
  Journal of Computational and Applied Mathematics 152
  
  Pages: 377-392
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14540106
[Presentation] 重調和問題に対する内部ペナルティ法で生ずる行列の条件数の評価2021
- Author(s)
  小山大介
- Organizer
  日本数学会2021 年度秋季総合分科会応用数学分科会
- Data Source
  KAKENHI-PROJECT-19K03630
[Presentation] 平面弾性問題に対するリフティング項付きハイブリッド型DGFEM2014
- Author(s)
  小山大介, 菊地文雄
- Organizer
  第10回日本応用数理学会研究部会連合発表会科学技術計算と数値解析研究部会
- Place of Presentation
  京都大学吉田キャンパス
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] 平面弾性問題に対するリフティング項付きハイブリッド型DGFEM2014
- Author(s)
  小山大介，菊地文雄
- Organizer
  第10回　日本応用数理学会　研究部会連合発表会科学技術計算と数値解析研究部会
- Place of Presentation
  京都大学吉田キャンパス
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] An optimized Schwarz method for exterior Helmholtz problems2013
- Author(s)
  Daisuke Koyama
- Organizer
  22nd International Conference on Domain Decomposition Methods (DD22)
- Place of Presentation
  Universita della Svizzera italiana - Lugano, Switzerland
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] 円外領域におけるHelmholtz問題に対する最適化Schwarz法2013
- Author(s)
  小山大介
- Organizer
  RIMS研究集会「応用数理と計算科学における理論と応用の融合」
- Place of Presentation
  京都大学数理解析研究所
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] Korn's inequality for a hybridized discontinuous Galerkin FEM with lifting operator2013
- Author(s)
  Daisuke Koyama and Fumio Kikuchi
- Organizer
  日本数学会2013年度秋季総合分科会応用数学分科会
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] 円外領域におけるHelmholtz問題に対する最適化Schwarz 法2013
- Author(s)
  小山大介
- Organizer
  RIMS 研究集会「応用数理と計算科学における理論と応用の融合」
- Place of Presentation
  京都大学数理解析研究所
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] Strong $L^p$ convergence associated with Rellich-type discrete compactness for discontinuous Galerkin FEM2012
- Author(s)
  菊地文雄，小山大介
- Organizer
  日本数学会
- Place of Presentation
  九州大学伊都キャンパス
- Data Source
  KAKENHI-PROJECT-23540127
[Presentation] An optimized Schwarz method for acoustic radiation problems2012
- Author(s)
  小山大介
- Organizer
  日本数学会
- Place of Presentation
  九州大学伊都キャンパス
- Year and Date
  2012-09-21
- Data Source
  KAKENHI-PROJECT-23540127

1. KAKO Takashi (30012488)

# of Collaborated Projects: 8 results

# of Collaborated Products: 5 results
2. USHIJIMA Teruo (10012410)

# of Collaborated Projects: 6 results

# of Collaborated Products: 0 results
3. SUITOU Hiroshi (10302530)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. TAKEDA Tatsunoki (60272746)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
5. WATANABE Jiro (90011535)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
6. KATO Toshiyuki (30234793)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. IMAMURA Toshiyuki (60361838)

# of Collaborated Projects: 2 results

# of Collaborated Products: 2 results
8. FUKUHARA Makoto (60272754)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
9. OGATA Hidenori (50242037)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. YAMAMOTO Nobito (30210545)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. TABATA Masahisa (30093272)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. FUJIMA Shoiti (00209082)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. YOSHIDA Toshinobu (30114341)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. ZHANG Shao-liang (20252273)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 海津聡 (80017409)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 大西勇 (30262372)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. 田吉隆夫 (60017382)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Koyama Daisuke 小山 大介

KOYAMA Daisuke 小山 大介

小山 大介 コヤマ ダイスケ

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Co-Researchers

Application of interior penalty methods to mixed finite element method using nonconforming elementsPrincipal Investigator

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Study on finite element methods for wave problems in unbounded domains and development of associated FEM softwaresPrincipal Investigator

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[Book] 計算力学理論ハンドブック2010

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[Journal Article] Strong L^p convergence associated with Rellich-type discrete compactness for ciscontinuous Galerkin FEM2014

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[Journal Article] An a priori error estimate of the Dirichlet-to-Neumann finite element method for multiple scattering problems2014

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[Journal Article] 停留した物体による線形水波散乱問題に対するDtN有限要素法の誤差解析2012

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[Journal Article] 停留した物体による線形水波散乱問題に対するDtN 有限要素法の誤差解析2012

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Koyama Daisuke 小山大介

KOYAMA Daisuke 小山大介

小山大介コヤマダイスケ