Analysis of a SIR model with pulse vaccination and temporary immunity: Stability, bifurcation and a cylindrical attractor

KEM Church, X Liu - Nonlinear Analysis: Real World Applications, 2019 - Elsevier
A time-delayed SIR model with general nonlinear incidence rate, pulse vaccination and
temporary immunity is developed. The basic reproduction number is derived and it is shown …

Malware propagation in clustered computer networks

JRC Piqueira, MAM Cabrera, CM Batistela - Physica A: Statistical …, 2021 - Elsevier
Previous studies have been dedicated to strategies for combating malware propagation in
data networks. One method to combat these deleterious actions is to establish preventive …

[图书][B] Bifurcation theory of impulsive dynamical systems

KEM Church, X Liu - 2021 - Springer
Impulsive dynamical systems have become increasingly popular during the past decades
because they provide a natural framework for mathematical modeling of many real-world …

Optimality and sustainability of delayed impulsive harvesting

J Lawson, E Braverman - … in Nonlinear Science and Numerical Simulation, 2023 - Elsevier
We consider a logistic differential equation subject to impulsive delayed harvesting, where
the deduction information is a function of the population size at the time of one of the …

Coexisting multi-period and chaotic attractor in fully connected system via adaptive multi-body interaction control

Q Dai - Nonlinear Dynamics, 2024 - Springer
Multi-body interaction has been proved to exist widely in the real world. To verify the
influence of multi-body interactive feedback on the dynamics of system, a novel adaptive …

Periodic center manifolds for DDEs in the light of suns and stars

B Lentjes, L Spek, MM Bosschaert… - Journal of Dynamics and …, 2023 - Springer
In this paper, we prove the existence of a periodic smooth finite-dimensional center manifold
near a nonhyperbolic cycle in classical delay differential equations by using the Lyapunov …

Bifurcation type phenomena for positive solutions of a class of impulsive differential equations

W Wang, X Zuo - Mathematical Methods in the Applied …, 2023 - Wiley Online Library
In this paper, we are concerned with the existence, nonexistence, and multiplicity of positive
solutions for a impulsive periodic boundary value problem with positive parameter λ λ. Using …

Periodic normal forms for bifurcations of limit cycles in DDEs

B Lentjes, L Spek, MM Bosschaert… - Journal of Differential …, 2025 - Elsevier
A recent work [1] by the authors on the existence of a periodic smooth finite-dimensional
center manifold near a nonhyperbolic cycle in delay differential equations motivates the …

Cost-effective robust stabilization and bifurcation suppression

KEM Church, X Liu - SIAM Journal on Control and Optimization, 2019 - SIAM
A novel technique of robust stabilization and bifurcation suppression is proposed. The
proposed method, the center probe method, stabilizes an equilibrium point of a delay …

Eigenvalues and delay differential equations: periodic coefficients, impulses and rigorous numerics

KEM Church - Journal of Dynamics and Differential Equations, 2021 - Springer
We develop validated numerical methods for the computation of Floquet multipliers of
equilibria and periodic solutions of delay differential equations, as well as impulsive delay …