| Address |
1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
TEL : +81-3-3260-4271 |
| E-mail Address |
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| Homepage |
http://www.rs.tus.ac.jp/yenatsu/index_e.html (English)
http://www.rs.tus.ac.jp/yenatsu/index.html |
| Information about TUS |
https://www.tus.ac.jp/academics/teacher/lightbox/68f5.html
|
Pure
(Researcher Profiling Tool) |
https://tus.elsevierpure.com/ja/persons/yoichi-enatsu |
| Under-Graduate School |
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2007, Waseda University Faculty of Science and Engineering Department of Mathematical Science
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| Graduate School |
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2012, Waseda University Graduate School of Fundamental Science and Engineering Department of Pure and Applied Mathematics Doctoral Degree
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| Postgraduate Qualification |
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Waseda University Doctor of Science
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| Research History |
- We investigate stability of equilibria of mathematical models governed by a system of nonlinear differential equations. In particular, we are interested in global stability of an endemic equilibrium of epidemic models such as SIR (Susceptible-Infected-Recovered) models. Our study plays an important role to predict the eventual disease prevalence by a threshold parameter called the basic reproduction number. Our interest also lies in the asymptotic behavior of solutions of structured population models such as age-structured models.
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| Employment History |
2012-2013 Graduate School of Fundamental Sciences and Engineering, Waseda University, JSPS Research Fellowship for Young Scientists (PD)
2013-2015 Graduate School of Mathematical Sciences, The University of Tokyo, JSPS Research Fellowship for Young Scientists (PD)
201504-201703 Department of Mathematical Information Science, Faculty of Science, Tokyo University of Science, Assistant Professor
201704-202003 Department of Applied Mathematics, Faculty of Science, Tokyo University of Science, Assistant Professor
202004- Department of Applied Mathematics, Faculty of Science, Tokyo University of Science, Lecturer
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| Research Keyword |
Differential equations, epidemic models, stability, Lyapunov functional, time delay
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| Research Area |
- Mathematical analysis (Asymptotic behavior of dynamical systems in mathematical biology)
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| Research Theme |
- Stability of stationary solutions for nonlinear differential (difference) equations with time delays in the literature of mathematical biology
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| Academic Awards Received |
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| Academic Society Affiliations |
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2024.11.1 - 2025.11.1
The Japan Society for industrial and applied mathematics
JSIAM’s 2025 Annual Meeting, Meeting Committee member
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2023.10.1 - 2025.12.31
Japanese Society for Mathematical Biology
JSMB and CIJE Annual Meeting, Meeting Committee member
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2023.1.1 - 2024.12.31
Japanese Society for Mathematical Biology
JSMB Annual Meeting, Steering Committee
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2019.1.1 - 2019.12.31
Japanese Society for Mathematical Biology
JSMB Annual Meeting, Electoral administration committees
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2018.10.1 - 2019.9.30
Japanese Society for Mathematical Biology
2019JSMB Annual Meeting, Organizing Committee
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2016.4.1 - 2018.3.31
Japanese Society for Mathematical Biology
Accountant
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2015.4.1 - 2016.3.31
Japanese Society for Mathematical Biology
2015JSMB-CJK Joint Meeting, Organizing Committee
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| Guest Professor |
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