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2008 Fiscal Year Self-evaluation Report

Development of highly accurate numerical method based on finite differences and its application to ill-posed problems of partial differential equations

Research Project

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Project/Area Number 18540108
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field General mathematics (including Probability theory/Statistical mathematics)
Research InstitutionIbaraki University

Principal Investigator

ONISHI Kazuei  Ibaraki University, 理学部, 教授 (20078554)

Project Period (FY) 2006 – 2009
Keywords応用数学 / 逆問題 / 数値解法 / 偏微分方程式 / 正則化
Research Abstract

解がデータに連続的に依存しないという意味での非適切な問題、特に偏微分方程式の逆問題と通称される問題を数値的に解く強力な方法を展開する。「超高精度近似解法」と「任意多倍長計算法」の組合せにより、データにノイズが含まれない問題に対しては、『工夫のないことを工夫する』ことを目指す。ノイズが含まれる問題に対しては、伝統的な正則化法を、任意多倍長計算法による新しい観点から捉えなおす。

  • Research Products

    (5 results)

All 2008 2007

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (2 results)

  • [Journal Article] 誤差のあるコーシーデータをもつラプラス方程式を念頭においたランク低減法2008

    • Author(s)
      大西和榮, 大浦洋子, 繁田岳美, 代田健二
    • Journal Title

      計算数理工学論文集(日本計算数理工学会) Vol.8

      Pages: 43-48

    • Peer Reviewed
  • [Journal Article] Numerical solution to the Cauchy problem of the Laplace equation with noisy data2008

    • Author(s)
      K. Onishi, K. Shirota, and T. Shigeta
    • Journal Title

      Theoretical and Applied Mechanics Japan Vol.57(accepted)

    • Peer Reviewed
  • [Journal Article] Lattice-free finite difference method for numerical solution of inverse heat conduction problem2007

    • Author(s)
      K. Iijima and K. Onishi
    • Journal Title

      Inverse Problems in Science and Engineering Journal Vol.15-2

      Pages: 93-106

    • Peer Reviewed
  • [Presentation] Regularization by rank reduction associated with the Cauchy problem of the Laplace equation2008

    • Author(s)
      K. Onishi, K. Shirota, and T. Shigeta
    • Organizer
      Abstracts in the International Conference on Inverse Problems and its Applications
    • Place of Presentation
      Fudan University, Shanghai, China(31)
    • Year and Date
      20080000
  • [Presentation] 誤差のあるデータをもつラプラス方程式の初期値問題に対するランク低減法(Rank reduction technique for initial value problem of the Laplace equation with noisy data)2008

    • Author(s)
      大西和榮, 繁田岳美, 代田健二
    • Organizer
      日本応用数理学会2008年度年会講演予稿集(291-292)
    • Place of Presentation
      東京大学柏キャンパス
    • Year and Date
      20080000

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Published: 2010-06-11   Modified: 2016-04-21  

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