A5045976173- Mathematical and Theoretical Epidemiology and Ecology Models
- Evolution and Genetic Dynamics
- Hepatitis B Virus Studies
- Animal Virus Infections Studies
- COVID-19 epidemiological studies
- Cervical Cancer and HPV Research
- SARS-CoV-2 and COVID-19 Research
- Nonlinear Dynamics and Pattern Formation
- Pregnancy and Medication Impact
- Technology and Human Factors in Education and Health
- COVID-19 Pandemic Impacts
- Animal Ecology and Behavior Studies
- Applied Advanced Technologies
- Pregnancy and preeclampsia studies
- Systemic Lupus Erythematosus Research
- Evolutionary Game Theory and Cooperation
- Advanced Technologies and Applied Computing
Minzu University of China
2020-2025
Peking University First Hospital
2023
Peking University
2023
In this paper, we develop a predator–prey system with parameterized generalized Allee effect function and multiple discrete delays. One delay accounts for the negative feedback in prey, while other represents gestation period predator population. First, demonstrate positivity boundedness of solutions non-delayed establish conditions existence stability equilibria. For delayed model, assess impact varying delays on equilibria, discovering that exhibits Hopf bifurcations both Additionally,...
This research describes a predator–prey system that takes into account the generalized Allee effect, aiming to derive general conclusions applicable specific effect functions through use of function. To make sure suggested model was accurate from mathematical perspective, we first investigated solutions determine whether they were positive and bounded. We then assessed existence equilibria stability behaviors exhibit confirmed emergence both Hopf transcritical bifurcations. discovered...
In recent years, the frequent occurrence of infectious diseases has posed a serious challenge to global public health security, highlighting importance building an efficient disease monitoring and early warning system. This study focuses on system based big data technology, aiming improve accuracy timeliness through comprehensive real-time collection analysis epidemic data. By collecting preprocessing multiple sources in real-time, we utilized machine learning techniques construct model time...
We formulate a mathematical model to explore the transmission dynamics of human papillomavirus (HPV). In our model, infected individuals can recover with limited immunity that results in lower probability being again. practice, it is necessary revaccinate within period after first vaccination ensure HPV infection. Accordingly, we include and revaccination model. The exhibits backward bifurcation as result imperfect protection recovery because basic reproduction number less than one. conduct...
In many nations, efforts to prevent and control COVID-19 have been significantly impeded by the SARS-CoV-2 virus ongoing mutation. The Omicron strain, a more recent prevalent has had significant detrimental effects in countries worldwide. To investigate impact of BA.2 strain on vaccine efficacy, we proposed model with vaccination immunological decline this research. Then, fitted our based number daily new instances reported government Jilin Shanghai, China. We estimated effective...
<abstract> <p>Vaccination is widely acknowledged as an affordable and cost-effective approach to guard against infectious diseases. It important take vaccination rate, vaccine effectiveness, vaccine-induced immune decline into account in epidemic dynamical modeling. In this paper, model of developed. This provides a framework the disease transmission dynamics through qualitative quantitative analysis. The result shows that system may have multiple equilibria. We used...
The purpose of this paper is to study a predator–prey model with Allee effect and double time delays. This research examines the dynamics model, focus on positivity, existence, stability Hopf bifurcations. periodic solution direction bifurcation are elucidated by applying normal form theory center manifold theorem. To validate correctness theoretical analysis, numerical simulations were conducted. results suggest that weak delay can promote within transitioning it from instability stability....