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Felicia Magpantay Person1 #679784 Felicia Magpantay is an assistant professor in the Department of Mathematics & Statistics at Queen’s University. | ![](Handler.ashx?path=ROOT%252fu2928%252fCANMOD%252fFM2_OSN.jpeg)
- Her research is on delay differential equations, applied dynamical systems, numerical methods and statistical inference, with applications focused on mathematical ecology and epidemiology. Her work has been funded by NSERC, the Canadian Foundation for Innovation, and the Ontario Research Fund. Her work has also been supported by computing resources from the Centre for Advanced Computing (Queen’s University) and Compute Canada.
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+Verweise (3) - VerweiseHinzufügenList by: CiterankMapLink[2] A Quantification of Long Transient Dynamics
Zitieren: A. Liu, F. M. G. Magpantay Publication date: 9 March 2022 Publication info: SIAM Journal on Applied Mathematics, Volume 82, Issue 2, April 2022, Pages: 381 - 407 Zitiert von: David Price 7:34 PM 26 November 2023 GMT Citerank: (1) 701037MfPH – Publications144B5ACA0 URL: DOI: https://doi.org/10.1137/20M1367131
| Auszug - [SIAM Journal on Applied Mathematics, 9 March 2022]
The stability of equilibria and asymptotic behaviors of trajectories are often the primary focuses of mathematical modeling. However, many interesting phenomena that we would like to model, such as the “honeymoon period” of a disease after the onset of mass vaccination programs, are transient dynamics. Honeymoon periods can last for decades and can be important public health considerations. In many fields of science, especially in ecology, there is growing interest in a systematic study of transient dynamics. In this work, we attempt to provide a technical definition of “long transient dynamics” such as the honeymoon period and explain how these behaviors arise in systems of ordinary differential equations. We define a transient center, a point in state space that causes long transient behaviors, and derive some of its properties. In the end, we define reachable transient centers, which are transient centers that can be reached from initializations that do not need to be near the transient center. |
Link[3] A framework for long-lasting, slowly varying transient dynamics
Zitieren: Ankai Liu, Felicia Maria G. Magpantay, Kenzu Abdella Publication date: 16 May 2023 Publication info: Mathematical Biosciences and Engineering 2023, Volume 20, Issue 7: 12130-12153 Zitiert von: David Price 7:40 PM 26 November 2023 GMT Citerank: (2) 701037MfPH – Publications144B5ACA0, 703962Ecology859FDEF6 URL: DOI: https://doi.org/10.3934/mbe.2023540
| Auszug - [Mathematical Biosciences and Engineering, 16 May 2023]
Much of the focus of applied dynamical systems is on asymptotic dynamics such as equilibria and periodic solutions. However, in many systems there are transient phenomena, such as temporary population collapses and the honeymoon period after the start of mass vaccination, that can last for a very long time and play an important role in ecological and epidemiological applications. In previous work we defined transient centers which are points in state space that give rise to arbitrarily long and arbitrarily slow transient dynamics. Here we present the mathematical properties of transient centers and provide further insight into these special points. We show that under certain conditions, the entire forward and backward trajectory of a transient center, as well as all its limit points must also be transient centers. We also derive conditions that can be used to verify which points are transient centers and whether those are reachable transient centers. Finally we present examples to demonstrate the utility of the theory, including applications to predatory-prey systems and disease transmission models, and show that the long transience noted in these models are generated by transient centers. |
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