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Study on Higher Order Numerical Methods and Dynamical Behavior of Solutions for Mathematical Models

Research Project

Project/Area Number 19K03613
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 12040:Applied mathematics and statistics-related
Research InstitutionYamagata University

Principal Investigator

Fang Qing  山形大学, 理学部, 教授 (10243544)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords数理モデル / 周期沈殿現象 / 反応拡散方程式 / 差分スキーム / 数値シミュレーション / 高精度差分スキーム / 非線形反応拡散方程式 / 予測モデル / 有限差分スキーム / 純光合成量モデル / リーゼガングパターン / 高精度数値解法 / 力学的な挙動
Outline of Research at the Start

化学分野において、化学物質等が反応によって周期沈殿を生成する現象が存在することは知られている。そのような現象を解明するために、非線形放物型方程式系で記述される数理モデルが提案されている。本研究の目的は、このような周期沈殿現象の数理モデルの有効性を確立することである。本研究の成果によって、周期沈殿現象のシミュレーションがより正確に行われるようになり、現象を表す数理モデルの進行波性質や分岐性質等をより正確に調べられるのに貢献できる。

Outline of Final Research Achievements

This study considers numerical solutions of the system of nonlinear parabolic partial differential equations called reaction-diffusion equations, which is proposed as a mathematical model of periodic sedimentation phenomena. By constructing and developing a highly accurate finite difference scheme, we have simulated periodic sedimentation phenomena in which belts in one-dimensional space and rings in two-dimensional space are generated. We established the validity of such a mathematical model and contributed to the elucidation of the mechanism of periodic sedimentation phenomena such as the Liesegang pattern.

Academic Significance and Societal Importance of the Research Achievements

無機化学と分析化学の分野において、沈殿溶解平衡は固体とその飽和溶液が共存する系であり、重要な平衡理論の一つである。このような自然現象には、空間1次元において帯状と空間2次元においてリング状が生成するような周期沈殿現象があり、数理モデルとして反応拡散方程式と呼ばれる非線形放物型偏微分方程式が提案されている。本研究の成果は、周期沈殿現象の数理モデの確立とそのメカニズムの解明に十分な意義をもつことになったと思われる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 5 results)

  • [Int'l Joint Research] Beijing Forestry University(中国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Harrisburg University of Sci. and Tech.(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Phase separation mechanism for a unified understanding of dissipative pattern formation in a Liesegang system2022

    • Author(s)
      Itatani Masaki、Fang Qing、Lagzi Istv?n、Nabika Hideki
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 24 Issue: 4 Pages: 2088-2094

    • DOI

      10.1039/d1cp05184a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Modification of the Matalon?Packter Law for Self-Organized Periodic Precipitation Patterns by Incorporating Time-Dependent Diffusion Flux2021

    • Author(s)
      Itatani Masaki、Fang Qing、Nabika Hideki
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 125 Issue: 25 Pages: 6921-6929

    • DOI

      10.1021/acs.jpcb.1c02175

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Multilayer Interactome Network Constructed in a Forest Poplar Population Mediates the Pleiotropic Control of Complex Traits2021

    • Author(s)
      Huiying Gong, Sheng Zhu, Xuli Zhu, Qing Fang, Xiao-Yu Zhang, Rongling Wu
    • Journal Title

      Frontiers in Genetics

      Volume: 12

    • DOI

      10.3389/fgene.2021.769688

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Genetic Architecture of Multiphasic Growth Covariation as Revealed by a Nonlinear Mixed Mapping Framework2021

    • Author(s)
      Huiying Gong, Xiao-Yu Zhang, Sheng Zhu, Libo Jiang, Xuli Zhu, Qing Fang, Rongling Wu
    • Journal Title

      Frontiers in Plant Science

      Volume: 12

    • DOI

      10.3389/fpls.2021.711219

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Holling Functional Response Model for Mapping QTLs Governing Interspecific Interactions2021

    • Author(s)
      Xiao-Yu Zhang, Huiying Gong, Qing Fang, Xuli Zhu, Libo Jiang, Rongling Wu
    • Journal Title

      Frontiers in Genetics

      Volume: 12

    • DOI

      10.3389/fgene.2021.766372

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Programmable Design of Self-Organized Patterns through a Precipitation Reaction2020

    • Author(s)
      Masaki Itatani, Qing Fang, Kei Unoura, Hideki Nabika
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 124 Issue: 38 Pages: 8402-8409

    • DOI

      10.1021/acs.jpcb.0c05603

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Higher Order Prediction Model of Populus Simonii’s Net Photosynthetic Rate Based on Improved Gradient Boosting Method2020

    • Author(s)
      Xiao-Yu Zhang, Xinyue Ji, Yuepeng Song, Deqiang Zhang, Qing Fang
    • Journal Title

      Communications in Computer and Information Science

      Volume: 1303 Pages: 373-385

    • DOI

      10.1007/978-981-33-6378-6_28

    • ISBN
      9789813363779, 9789813363786
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Machine learning models for net photosynthetic rate prediction using poplar leaf phenotype data2020

    • Author(s)
      Xiao-Yu Zhang, Ziyuan Huang, Xuehui Su, Andrew Siu, Yuepeng Song, Deqiang Zhang and Qing Fang
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 2 Pages: e0228645-e0228645

    • DOI

      10.1371/journal.pone.0228645

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Formation of Periodic Precipitation Pattern in pH-induced Metal Nanoparticles Aggregation system2022

    • Author(s)
      Masaki Itatani, Qing Fang, Istvan Lagzi and Hideki Nabika
    • Organizer
      International Conference on Nonequilibrium to Induce and Maintain Spatio-Temporal Patterns
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Formation of Self-Organized Periodic Precipitation Patterns in Multi-Layered Gel2020

    • Author(s)
      ITATANI, Masaki; FANG, Qing; UNOURA, Kei; NABIKA, Hideki
    • Organizer
      The 100th Annual Meeting of The Chemical Society of Japan
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Higher Order Prediction Model of Populus Simonii’s Net Photosynthetic Rate Based on Improved Gradient Boosting Method2020

    • Author(s)
      Xiao-Yu Zhang, Xinyue Ji, Yuepeng Song, Deqiang Zhang, Qing Fang
    • Organizer
      The 2020 International Conferences on Life System Modeling and Simulation
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Formation of Self-Organized Liesegang Pattern in Gradient Reaction Field2019

    • Author(s)
      Masaki Itatani, Qing Fang, Kei Unoura, Hideki Nabika
    • Organizer
      2019 年度化学系学協会東北大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Self-Organized Precipitation Patterns in Hydrogel with Density Gradient2019

    • Author(s)
      Masaki Itatani, Qing Fang, Kei Unoura, and Hideki Nabika
    • Organizer
      The 7th International Conference on Smart Systems Engineering 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 反応場の密度空間勾配に基づくリーゼガング型自己組織化構造の空間周期分岐因子の解明2019

    • Author(s)
      板谷昌輝・方青・鵜浦啓・並河英紀
    • Organizer
      第9 回CSJ 化学フェスタ
    • Related Report
      2019 Research-status Report
  • [Presentation] Formation of Self-Organized Periodic Precipitation Patterns in Gradient Hydrogel2019

    • Author(s)
      Masaki Itatani, Qing Fang, Kei Unoura and Hideki Nabika
    • Organizer
      OKINAWA COLLOIDS 2019-An International Conference on Colloid & Surface Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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