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Elucidation of the essential differences and similarities between continuous and discrete dynamics

Research Project

Project/Area Number 17K05327
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical analysis
Research InstitutionShimane University

Principal Investigator

Sugie Jitsuro  島根大学, 学術研究院理工学系, 教授 (40196720)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords微分方程式 / 差分方程式 / 安定性理論 / 振動性理論 / 造血幹細胞モデル / 食物連鎖モデル / 国際研究者交流 / 中華人民共和国 / 関数方程式論 / 関数微分方程式論 / 関数方程式 / 定性的微分方程式論
Outline of Final Research Achievements

Various dynamics expressed by differential and difference equations are clarified from the viewpoints of stability theory, oscillatory theory, and ecosystem model analysis. Specific studies include the global asymptotic stability and equi-asymptotic stability of the interior equilibrium point of a three-species ecosystem consisting of phytoplankton, zooplankton, and small fish; the existence of periodic solutions for a discrete hematopoietic model representing the increase and decrease of mature blood cells; the number of periodic solutions of a discrete model describing the adult fly population; the non-oscillation of solutions of Mathieu equations describing parametric excitation phenomena.

Academic Significance and Societal Importance of the Research Achievements

本研究では、先行研究による結果の長所や短所を俯瞰するとともに、適用範囲を大幅に拡張することができた。また、従来の数学的知識が役に立たない場合にも適用できる手法を考案し、問題解明にあたった。さらに、気温や日照時間などの季節的要因を生態系モデルに加味して、先行研究とは趣きを大いに異にする研究成果も得られた。その意味では、本研究は画期的なものであると言える。その証左として、得られた成果が国際的に評価の高い学術誌に19編の論文として掲載されたことに現れている。本研究が生態系、環境系、工学系モデルに密接な関係を有することから、単に数学的知見の獲得だけにとどまらず、実応用の可能性を有している意義も大きい。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (86 results)

All 2022 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (5 results) Journal Article (25 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 25 results,  Open Access: 25 results,  Acknowledgement Compliant: 1 results) Presentation (49 results) (of which Int'l Joint Research: 2 results,  Invited: 17 results) Remarks (6 results) Funded Workshop (1 results)

  • [Int'l Joint Research] 東北師範大学/北京科技大学/東北林業大学(中国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 東北師範大学/北京科技大学/東北林業大学(中国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 東北師範大学/東北林業大学/北京科技大学(中国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] 東北師範大学/北京科技大学/東北林業大学(中国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] 東北師範大学数学与統計学院/北京科技大学数理学院(中国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] The least possible impulse for oscillating all nontrivial solutions of second-order nonoscillatory differential equations2022

    • Author(s)
      Jitsuro Sugie
    • Journal Title

      Qualitative Theory of Dynamical Systems

      Volume: Article Number 43 Issue: 2

    • DOI

      10.1007/s12346-022-00571-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Limit cycles of a class of Lienard systems derived from state-dependent impulses2022

    • Author(s)
      Jitsuro Sugie and Kazuki Ishibashi
    • Journal Title

      Nonlinear Analysis: Hybrid Systems

      Volume: 45, Article Number 101188 Pages: 101188-101188

    • DOI

      10.1016/j.nahs.2022.101188

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Attraction region for the classical Lotka-Volterra predator-prey model caused by impulsive effects2021

    • Author(s)
      Jitsuro Sugie and Yoshiki Ishihara
    • Journal Title

      Qualitative Theory of Dynamical Systems

      Volume: 20, Article Number 46 Issue: 2

    • DOI

      10.1007/s12346-021-00482-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Uniform global asymptotic stability for oscillators with nonlinear damping and nonlinear restoring terms2021

    • Author(s)
      Jitsuro Sugie and Yoshiki Ishihara
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 103, Article Number 105969 Pages: 105969-105969

    • DOI

      10.1016/j.cnsns.2021.105969

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Number of positive periodic solutions for first-order nonlinear difference equations with feedback2021

    • Author(s)
      Jitsuro Sugie
    • Journal Title

      Applied Mathematics and Computation

      Volume: 391, Article Number 125626 Pages: 125626-125626

    • DOI

      10.1016/j.amc.2020.125626

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of decimation on positive periodic solutions of discrete generalized Nicholson's blowflies models with multiple time-varying delays2021

    • Author(s)
      Jitsuro Sugie, Yan Yan and Mingzhu Qu
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 97, Article Number 105731 Pages: 105731-105731

    • DOI

      10.1016/j.cnsns.2021.105731

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Existence of multiple positive periodic solutions for discrete hematopoiesis models2020

    • Author(s)
      Jitsuro Sugie and Yan Yan
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 89C Pages: 1-17

    • DOI

      10.1016/j.cnsns.2020.105273

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Global attractivity of a unique positive periodic solution for a first-order nonlinear difference equation with time delays2020

    • Author(s)
      Yan Yan and Jitsuro Sugie
    • Journal Title

      Journal of Difference Equations and Applications

      Volume: 26 Issue: 6 Pages: 855-870

    • DOI

      10.1080/10236198.2020.1801662

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Global asymptotic stability of a unique positive periodic solution for a discrete hematopoiesis model with unimodal production functions2020

    • Author(s)
      Yan Yan and Jitsuro Sugie
    • Journal Title

      Monatshefte fur Mathematik

      Volume: 191 Issue: 2 Pages: 325-348

    • DOI

      10.1007/s00605-019-01330-5

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interval criteria for oscillation of second-order self-adjoint impulsive differential equations2020

    • Author(s)
      Jitsuro Sugie
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 148 Issue: 3 Pages: 1095-1108

    • DOI

      10.1090/proc/14797

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A remark on Philos-type oscillation criteria for differential equations2020

    • Author(s)
      Jitsuro Sugie
    • Journal Title

      Electronic Journal of Qualitative Theory of Differential Equations

      Volume: 2020-18 Issue: 18 Pages: 1-7

    • DOI

      10.14232/ejqtde.2020.1.18

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Global asymptotic stability and equiasymptotic stability for a time-varying phytoplankton-zooplankton-fish system2019

    • Author(s)
      Wei Zheng and Jitsuro Sugie
    • Journal Title

      Nonlinear Analysis: Real World Applications

      Volume: 46 Pages: 1161-136

    • DOI

      10.1016/j.nonrwa.2018.09.015

    • NAID

      120007032156

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sufficient conditions for convergence of solutions of damped elliptic equations2019

    • Author(s)
      Jitsuro Sugie and Kazuki Ishihara
    • Journal Title

      Monatshefte fur Mathematik

      Volume: 189 Issue: 3 Pages: 441-458

    • DOI

      10.1007/s00605-018-1192-9

    • NAID

      120006646232

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonoscillation of Mathieu equations with two frequencies2019

    • Author(s)
      Jitsuro Sugie and Kazuki Ishibashi
    • Journal Title

      Applied Mathematics and Computation

      Volume: 346 Pages: 491-499

    • DOI

      10.1016/j.amc.2018.10.072

    • NAID

      120007032157

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Existence regions of positive periodic solutions for a discrete hematopoiesis model with unimodal production functions2019

    • Author(s)
      Yan Yan and Jitsuro Sugie
    • Journal Title

      Applied Mathematical Modelling

      Volume: 68 Pages: 152-168

    • NAID

      120007032158

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interval oscillation criteria for second-order linear differential equations with impulsive effects2019

    • Author(s)
      Jitsuro Sugie
    • Journal Title

      Journal of Mathematical Analysis and Applications

      Volume: 479 Issue: 1 Pages: 621-642

    • DOI

      10.1016/j.jmaa.2019.06.041

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Uniform global asymptotic stability of time-varying Lotka-Volterra predator-prey systems2019

    • Author(s)
      W. Zheng and J. Sugie
    • Journal Title

      Appl. Math. Lett.

      Volume: 87 Pages: 125-133

    • DOI

      10.1016/j.aml.2018.07.030

    • NAID

      120006549287

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Philos-type oscillation criteria for linear differential equations with impulsive effect2019

    • Author(s)
      J. Sugie and K. Ishihara
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 470 Issue: 2 Pages: 911-930

    • DOI

      10.1016/j.jmaa.2018.10.041

    • NAID

      120006979680

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oscillation problems for Hill's equation with periodic damping2018

    • Author(s)
      J. Sugie and K. Ishibashi
    • Journal Title

      J. Math. Anal. Appl.

      Volume: 406 Issue: 1 Pages: 56-70

    • DOI

      10.1016/j.jmaa.2018.05.037

    • NAID

      120006886721

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonoscillation of Mathieu's equation whose coefficient is a finite Fourier series approximating a square wave2018

    • Author(s)
      J. Sugie
    • Journal Title

      Monatsh. Math.

      Volume: 186 Issue: 4 Pages: 721-743

    • DOI

      10.1007/s00605-017-1049-7

    • NAID

      120006549288

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Integral condition for oscillation of half-linear differential equations with damping2018

    • Author(s)
      J. Sugie and K. Ishibashi
    • Journal Title

      Appl. Math. Lett.

      Volume: 76 Pages: 146-154

    • DOI

      10.1016/j.aml.2017.12.012

    • NAID

      120006845271

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Convergence of radially symmetric solutions for (p,q)-Laplacian elliptic equations2017

    • Author(s)
      Jitsuro Sugie and Masatoshi Minei
    • Journal Title

      Journal of Dynamics and Differential Equations

      Volume: 未定 Issue: 2 Pages: 579-600

    • DOI

      10.1007/s10884-016-9560-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Nonoscillation of second-order linear equations involving a generalized difference operator2017

    • Author(s)
      J. Sugie and M. Tanaka
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 212 Pages: 241-258

    • DOI

      10.1007/978-981-10-6409-8_16

    • ISBN
      9789811064081, 9789811064098
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonoscillation of second-order linear difference systems with varying coefficients2017

    • Author(s)
      J. Sugie
    • Journal Title

      Linear Algebra Appl.

      Volume: 531 Pages: 22-37

    • DOI

      10.1016/j.laa.2017.05.031

    • NAID

      120006732227

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Uniform asymptotic stability of time-varying damped harmonic oscillators2017

    • Author(s)
      K. Ishihara and J. Sugie
    • Journal Title

      Proc. Amer. Math. Soc. Ser. B

      Volume: 4 Issue: 4 Pages: 31-46

    • DOI

      10.1090/bproc/30

    • NAID

      120006549290

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Dynamical behavior of stochastic predator-prey system with stage structure2020

    • Author(s)
      Xin Zhao, Zhijun Zeng and Jitsuro Sugie
    • Organizer
      令和元年度 日本数学会 中国・四国支部例会
    • Related Report
      2019 Research-status Report
  • [Presentation] Pattern dynamics of Fitzhugh-Nagumo model over a square region2020

    • Author(s)
      Mingzhu Qu, Chunrui Zhang and Jitsuro Sugie
    • Organizer
      令和元年度 日本数学会 中国・四国支部例会
    • Related Report
      2019 Research-status Report
  • [Presentation] Multiplicity of positive periodic solutions for a discrete hematopoiesis model with a unimodal production function2020

    • Author(s)
      Yan Yan and Jitsuro Sugie
    • Organizer
      令和元年度 日本数学会 中国・四国支部例会
    • Related Report
      2019 Research-status Report
  • [Presentation] Sufficient condition for oscillation of forced linear second-order differential equations2020

    • Author(s)
      Yoshiki Ishihara and Jitsuro Sugie
    • Organizer
      令和元年度 日本数学会 中国・四国支部例会
    • Related Report
      2019 Research-status Report
  • [Presentation] Oscillation criteria for self-adjoint differential equations with impulsive effects2019

    • Author(s)
      Jitsuro Sugie
    • Organizer
      The 7th China-India-Japan-Korea International Conference on Mathematical Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Global attractivity of a unique positive periodic solution for a discrete hematopoiesis model2019

    • Author(s)
      Yan Yan and Jitsuro Sugie
    • Organizer
      The workshop of NEFU-SHIMANE UNIV's students on differential equations of dynamical systems
    • Related Report
      2019 Research-status Report
  • [Presentation] Asymptotic stability of a pendulum with impulsive effects2019

    • Author(s)
      Hiroshi Shiozaki and Jitsuro Sugie
    • Organizer
      The workshop of NEFU-SHIMANE UNIV's students on differential equations of dynamical systems
    • Related Report
      2019 Research-status Report
  • [Presentation] Oscillation for second-order linear differential equations with a sign-changing forcing term2019

    • Author(s)
      Yoshiki Ishihara and Jitsuro Sugie
    • Organizer
      The workshop of NEFU-SHIMANE UNIV's students on differential equations of dynamical systems
    • Related Report
      2019 Research-status Report
  • [Presentation] Wrong use or application of perfect square expression2019

    • Author(s)
      Jitsuro Sugie
    • Organizer
      理学院数学学科学報告会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Growth conditions for uniform asymptotic stability of damped harmonic oscillators2018

    • Author(s)
      J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Global asymptotic stability of positive solution of discrete hematopoiesis models2018

    • Author(s)
      Y. Yan and J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Asymptotic stability of a pendulum with impulsive effects2018

    • Author(s)
      H. Shiozaki and J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Oscillation theorem for second order linear self-adjoint impulsive differential equations2018

    • Author(s)
      Y. Ishihara and J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Asymptotic stability for damped coupled oscillators with time-varying coefficients2018

    • Author(s)
      J. Sugie
    • Organizer
      黒龍江大学数学科学学院学術報告会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Stability analysis for two-species and three-species ecological models with seasonal variation2018

    • Author(s)
      W. Zheng and J. Sugie
    • Organizer
      黒龍江大学数学科学学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Growth conditions for uniform asymptotic stability of damped harmonic oscillators2018

    • Author(s)
      J. Sugie
    • Organizer
      東北林業大学理学院学術報告会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Global asymptotic stability of positive periodic solution for discrete hematopoiesis models of U-type2018

    • Author(s)
      Y. Yan and J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] A sufficient condition for asymptotic stability of a pendulum with impulsive effects2018

    • Author(s)
      H. Shiozaki and J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Philos-type oscillation theorem of half-linear impulsive differential equations with damping term2018

    • Author(s)
      Y. Ishihara and J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2018 Research-status Report
  • [Presentation] Existence regions of positive periodic solutions for a mixed discrete hematopoiesis model2018

    • Author(s)
      Y. Yan and J. Sugie
    • Organizer
      Japan--China Joint Workshop on Mathematical Sciences in Matsue 2018 supported by Japan-Asia Youth Exchange Program in Science
    • Related Report
      2018 Research-status Report
  • [Presentation] Asymptotic stability for nonlinear differential equations with time-varying coefficients2018

    • Author(s)
      H. Shiozaki and J. Sugie
    • Organizer
      Japan--China Joint Workshop on Mathematical Sciences in Matsue 2018 supported by Japan-Asia Youth Exchange Program in Science
    • Related Report
      2018 Research-status Report
  • [Presentation] Integral averaing technique for oscillation of second-order linear self-adjoint differential equations with impulsive effect2018

    • Author(s)
      Y. Ishihara and J. Sugie
    • Organizer
      Japan--China Joint Workshop on Mathematical Sciences in Matsue 2018 supported by Japan-Asia Youth Exchange Program in Science
    • Related Report
      2018 Research-status Report
  • [Presentation] Global attractivity of positive periodic solution of a discrete hemato- poiesis model with multiple production functions2018

    • Author(s)
      Y. Yan and J. Sugie
    • Organizer
      Japan--China Joint Workshop on Differential and Difference Equations and Related Topics in Osaka 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] A sufficient condition for the asymptotic stability of a pendulum with impulsive effects2018

    • Author(s)
      H. Shiozaki and J. Sugie
    • Organizer
      Japan--China Joint Workshop on Differential and Difference Equations and Related Topics in Osaka 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Asymptotic stability and uniform asymptotic stability of damped linear oscillators2018

    • Author(s)
      J. Sugie
    • Organizer
      Bin(門構えに虫)南師範大学数学与統計学院学術交流会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Global attractivity of positive periodic solutions for a discrete hematopoiesis model of U-type2018

    • Author(s)
      Y. Yan and J. Sugie
    • Organizer
      Bin(門構えに虫)南師範大学数学与統計学院学術交流会
    • Related Report
      2018 Research-status Report
  • [Presentation] A sufficient condition for the asymptotic stability of damped nonlinear oscillators2018

    • Author(s)
      H. Shiozaki, K. Ishihara, J. Sugie
    • Organizer
      Japan-China Student Workshop on Mathematics and Statistics in Matsue 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] Existence regions of positive periodic solutions for a discrete hematopoiesis model with unimodal production functions2018

    • Author(s)
      Y. Yan, J. Sugie
    • Organizer
      Japan-China Student Workshop on Mathematics and Statistics in Matsue 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] Sufficient conditions for asymptotic stability of a time-varying phytoplankton-zooplankton-fish system2018

    • Author(s)
      W. Zheng, J. Sugie
    • Organizer
      Japan-China Student Workshop on Mathematics and Statistics in Matsue 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] Uniform asymptotic stability of two-dimensional linear nonautonomous differential systems2018

    • Author(s)
      K. Ishihara, J. Sugie
    • Organizer
      Japan-China Student Workshop on Mathematics and Statistics in Matsue 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] Sufficient conditions for nonoscillation of linear difference equations via Riccati method2018

    • Author(s)
      M. Takana, J. Sugie
    • Organizer
      Japan-China Student Workshop on Mathematics and Statistics in Matsue 2018
    • Related Report
      2017 Research-status Report
  • [Presentation] 非線形減衰振動子の零解の漸近安定性2018

    • Author(s)
      塩崎博司、杉江実郎
    • Organizer
      平成29年度 日本数学会中国・四国支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] Inclusive relations between growth conditions for uniform asymptotic stability of damped harmonic oscillators2018

    • Author(s)
      J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Asymptotic stability for nonlinear oscillators with time-varying coefficients2018

    • Author(s)
      H. Shiozaki, J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Global attractivity of positive periodic solutions for a discrete hematopoiesis model with unimodal production functions2018

    • Author(s)
      Y. Yan, J. Sugie
    • Organizer
      北京科技大学数理学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Oscillation problems for Hill's equation with periodic damping2017

    • Author(s)
      J. Sugie
    • Organizer
      International Conference on Differential and Difference Equations & Applications 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A sufficient condition for the asymptotic stability of damped half-liner oscillators2017

    • Author(s)
      H. Shiozaki, K. Ishihara, J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A concise condition for uniform asymptotic stability of damped linear oscillators2017

    • Author(s)
      K. Ishihara, J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Global asymptotic stability for marine phytoplankton-zooplankton-fish systems with seasonal effects2017

    • Author(s)
      W. Zheng, J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Nonoscillatory solutions of second--order linear equations with generalized difference operator2017

    • Author(s)
      M. Takana, J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A necessary and sufficient condition for the existence of positive periodic solutions of a discrete hematopoiesis model2017

    • Author(s)
      Y. Yan, J. Sugie
    • Organizer
      東北師範大学数学与統計学院学術報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Asymptotic stability of the equilibrium of damped nonliner oscillators2017

    • Author(s)
      H. Shiozaki, K. Ishihara, J. Sugie
    • Organizer
      Japan-China Joint Workshop on Mathematical Sciences in Matsue 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Kamenev-type oscillation criteria for linear differential eqautions with impulsive effects2017

    • Author(s)
      K. Ishihara, J. Sugie
    • Organizer
      Japan-China Joint Workshop on Mathematical Sciences in Matsue 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Nonoscillatory properties for second--order linear difference equations via Riccati method2017

    • Author(s)
      M. Takana, J. Sugie
    • Organizer
      Japan-China Joint Workshop on Mathematical Sciences in Matsue 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Exponential asymptotic stability for linear delay differential systems described by a rotation matrix2017

    • Author(s)
      Y. Yan, J. Sugie
    • Organizer
      Japan-China Joint Workshop on Mathematical Sciences in Matsue 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Existence of positive periodic solutions of a generalized discrete hematopoiesis model2017

    • Author(s)
      Y. Yan, J. Sugie
    • Organizer
      Japan-China Joint Workshop on Ordinary Differential Equations and Related Topics in Osaka 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Uniform asymptotic stability of damped linear oscillators with time-varying coefficients2017

    • Author(s)
      J. Sugie
    • Organizer
      RIMS Workshop: Succession and Innovation of Studies in ODEs in Real Domains
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Inclusion relations between growth conditions for uniform asymptotic stability of damped harmonic oscillators2017

    • Author(s)
      J. Sugie
    • Organizer
      China-Japan Joint Workshop on Ordinary Differential Equation
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A sufficient condition on the equiasymptotic stability for a phytoplankton-zooplankton-fish system with seasonal effects2017

    • Author(s)
      W. Zheng, J. Sugie
    • Organizer
      China-Japan Joint Workshop on Ordinary Differential Equation
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] 島根大学学術情報リポジトリ

    • URL

      https://ir.lib.shimane-u.ac.jp/ja/list/shimane_creators/%E3%82%B9/e19bb825c0e627738cba16cc388857ab

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] Goolgle Scholar

    • URL

      https://scholar.google.co.jp/citations?user=IMHn9OQAAAAJ&hl=ja

    • Related Report
      2021 Annual Research Report
  • [Remarks] ResearchGate

    • URL

      https://www.researchgate.net/profile/Jitsuro-Sugie?editSkillDialog=1

    • Related Report
      2021 Annual Research Report
  • [Remarks] Web of Science

    • URL

      https://www.webofscience.com/wos/author/record/462765

    • Related Report
      2021 Annual Research Report
  • [Remarks] MathSciNet

    • URL

      https://mathscinet.ams.org/mathscinet/search/publications.html?pg1=INDI&s1=168705

    • Related Report
      2021 Annual Research Report
  • [Remarks] 島根大学学術情報リポジトリ

    • URL

      http://ir.lib.shimane-u.ac.jp/ja/list/shimane_creators/%E3%82%B9/e19bb825c0e627738cba16cc388857ab

    • Related Report
      2019 Research-status Report 2018 Research-status Report 2017 Research-status Report
  • [Funded Workshop] RIMS 共同研究「実領域における常微分方程式研究の継承と革新」2017

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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