Qimin Zhang
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View article: Averaging principle and optimal control for a two-time-scale stochastic reaction-diffusion HIV model
Averaging principle and optimal control for a two-time-scale stochastic reaction-diffusion HIV model Open
View article: Impulsive Control Strategies for Practical Exponential Stability and Disease Extinction in Stochastic Delayed Anthrax Models
Impulsive Control Strategies for Practical Exponential Stability and Disease Extinction in Stochastic Delayed Anthrax Models Open
Stochastic environment and time delay have significant effects on the stability of anthrax. This study develops a time‐delayed stochastic anthrax model and explores sufficient conditions for the disease extinction. To effectively cope with…
View article: Compact Kähler manifolds with nef anti-canonical bundle
Compact Kähler manifolds with nef anti-canonical bundle Open
In this paper, we prove that a compact Kähler manifold $X$ with the nef anti-canonical bundle $-K_{X}$ admits a locally trivial fibration $ϕ\colon X \to Y$, where the fiber $F$ is a rationally connected manifold and the base $Y$ is a Calab…
View article: The interplay of technology, family, and identity: Chinese adolescents’ self-presentation on Douyin
The interplay of technology, family, and identity: Chinese adolescents’ self-presentation on Douyin Open
In the context of digitization and globalization, social media platforms, particularly TikTok, have become central spaces for adolescents’ self-presentation and social interactions. While TikTok has gained global popularity, its Chinese co…
View article: Cardiovascular Disease Detection By Leveraging Semi-Supervised Learning
Cardiovascular Disease Detection By Leveraging Semi-Supervised Learning Open
Cardiovascular disease (CVD) persists as a primary cause of death on a global scale, which requires more effective and timely detection methods. Traditional supervised learning approaches for CVD detection rely heavily on large-labeled dat…
View article: Comparative Analysis of Bayesian Networks for Breast Cancer Classification: Naive Bayes vs. Tree-Augmented Naive Bayes
Comparative Analysis of Bayesian Networks for Breast Cancer Classification: Naive Bayes vs. Tree-Augmented Naive Bayes Open
Breast cancer is the most common cancer among women, with nearly 1.7 million new cases diagnosed worldwide each year. Early detection and accurate diagnosis are crucial for improving patient outcomes and reducing mortality rates. This stud…
View article: A Comparative Study of Machine Learning Approaches for Diabetes Risk Prediction: Insights from SHAP and Feature Importance
A Comparative Study of Machine Learning Approaches for Diabetes Risk Prediction: Insights from SHAP and Feature Importance Open
This study leverages machine learning models, including Logistic Regression, XGBoost, and Random Forest, to predict diabetes using BRFSS data. XGBoost emerged as the top-performing model, achieving an AUC of 0.83. Feature importance was an…
View article: Harnessing XGBoost for Robust Biomarker Selection of Obsessive-Compulsive Disorder (OCD) from Adolescent Brain Cognitive Development (ABCD) data
Harnessing XGBoost for Robust Biomarker Selection of Obsessive-Compulsive Disorder (OCD) from Adolescent Brain Cognitive Development (ABCD) data Open
This study evaluates the performance of various supervised machine learning models in analyzing highly correlated neural signaling data from the Adolescent Brain Cognitive Development (ABCD) Study, with a focus on predicting obsessive-comp…
View article: Sufficient and necessary conditions of near-optimal controls for a stochastic listeriosis model with spatial diffusion
Sufficient and necessary conditions of near-optimal controls for a stochastic listeriosis model with spatial diffusion Open
Random environment and human activities have important effects on the survival of listeria. In this paper, treating infected people and removing bacteria from the environment as control strategies, we developed a listeriosis model that con…
View article: DYNAMIC ANALYSIS AND OPTIMAL CONTROL OF A TOXICANT-POPULATION MODEL WITH REACTION-DIFFUSION
DYNAMIC ANALYSIS AND OPTIMAL CONTROL OF A TOXICANT-POPULATION MODEL WITH REACTION-DIFFUSION Open
In this paper, we study the threshold dynamics and optimal control of a toxicant-population model with reaction-diffusion to understand how toxicant affect populations. In order to obtain the extinction and persistent conditions of the tox…
View article: Dynamics and density function for a stochastic anthrax epidemic model
Dynamics and density function for a stochastic anthrax epidemic model Open
In response to the pressing need to understand anthrax biology, this paper focused on the dynamical behavior of the anthrax model under environmental influence. We defined the threshold parameter $ R^s $, when $ R^s > 1 $; the disease w…
View article: On a Fuzzy Difference Equation Based on Generalized Division
On a Fuzzy Difference Equation Based on Generalized Division Open
In this work, a second-order fractional fuzzy difference equation is investigated. Firstly, the fuzzy difference equation is transformed into the corresponding ordinary difference equations with parameters based on the fuzzy set theory and…
View article: Dynamics and calculation of the basic reproduction number for a nonlocal dispersal epidemic model with air pollution
Dynamics and calculation of the basic reproduction number for a nonlocal dispersal epidemic model with air pollution Open
View article: Transarterial Chemoembolization for Refractory Hepatocellular Carcinoma Following Anti-angiogenic Therapy Combined with Immune Checkpoint Inhibitors: A Retrospective Single-center Analysis
Transarterial Chemoembolization for Refractory Hepatocellular Carcinoma Following Anti-angiogenic Therapy Combined with Immune Checkpoint Inhibitors: A Retrospective Single-center Analysis Open
Background: Hepatocellular carcinoma (HCC) is characterized by high morbidity and mortality rates around the world, ranking the sixth most common malignant tumor and the second cause of cancer-related mortality. Most patients are diagnosed…
View article: Seeded spin-mixing interferometry with long-time evolution in microwave-dressed sodium spinor Bose-Einstein condensates
Seeded spin-mixing interferometry with long-time evolution in microwave-dressed sodium spinor Bose-Einstein condensates Open
We experimentally demonstrate a new type of spin-mixing interferometry in sodium Bose–Einstein condensates (BECs) based on seeded initial states. Seeding is useful because it speeds up the generation of entangled pairs, allowing many colli…
View article: Nonlinear adaptive control of avian influenza model with slaughter, educational campaigns and treatment
Nonlinear adaptive control of avian influenza model with slaughter, educational campaigns and treatment Open
Avian influenza is an infectious viral disease caused by type A virus, which occurs frequently around the world and causes serious economic losses. Therefore, the adaptive control problem is explored in this paper for an avian influenza mo…
View article: Sliding mode dynamics and optimal control for HIV model
Sliding mode dynamics and optimal control for HIV model Open
Considering the drug treatment strategy in both virus-to-cell and cell-to-cell transmissions, this paper presents an HIV model with Filippov control. Given the threshold level $ N_t $, when the total number of infected cells is less or gre…
View article: Error Estimates of Full-Discrete Scheme for a Stochastic Multi-Group Sir Epidemic Model with Age Structure
Error Estimates of Full-Discrete Scheme for a Stochastic Multi-Group Sir Epidemic Model with Age Structure Open
View article: Finite-time contraction stability of a stochastic reaction-diffusion dengue model with impulse and Markov switching
Finite-time contraction stability of a stochastic reaction-diffusion dengue model with impulse and Markov switching Open
From the perspective of prevention and treatment of dengue, it is important to minimize the number of infections within a limited time frame. That is, the study of finite time contraction stability (FTCS) of dengue system is a meaningful t…
View article: Dynamic behavior of a reaction-diffusion dengue model with spatial heterogeneity
Dynamic behavior of a reaction-diffusion dengue model with spatial heterogeneity Open
Dengue is one of the most prevalent vector-borne viral diseases, which is transmitted through the bite of Aedes mosquitoes (Aedes albopictus). In this study, using the global exponential attraction theory, the dynamic behavior of the dengu…
View article: Threshold dynamics and finite-time stability of reaction-diffusion vegetation-water systems in arid area with time-varying delay
Threshold dynamics and finite-time stability of reaction-diffusion vegetation-water systems in arid area with time-varying delay Open
In this paper, deterministic and stochastic reaction-diffusion vege-tation-water systems with time-varying delay are developed, respectively. For the deterministic system, we define a threshold $ R_* $ and discuss the threshold dynamics of…
View article: Stationary distribution and optimal control of a stochastic population model in a polluted environment
Stationary distribution and optimal control of a stochastic population model in a polluted environment Open
This paper is concerned with a stochastic population model in a polluted environment. First, within the framework of Lyapunov method, the existence and uniqueness of a global positive solution of the model are proposed, and the sufficient …
View article: Dynamics and approximation of positive solution of the stochastic SIS model affected by air pollutants
Dynamics and approximation of positive solution of the stochastic SIS model affected by air pollutants Open
In this paper, we develop a stochastic susceptible-infective-susceptible (SIS) model, in which the transmission coefficient is a function of air quality index (AQI). By using Markov semigroup theory, the existence of kernel operator is obt…
View article: STATIONARY DISTRIBUTION AND CONTROL STRATEGY OF A STOCHASTIC DENGUE MODEL WITH SPATIAL DIFFUSION
STATIONARY DISTRIBUTION AND CONTROL STRATEGY OF A STOCHASTIC DENGUE MODEL WITH SPATIAL DIFFUSION Open
In this paper, we establish a dengue model, which is described by the spatial diffusion and Brownian motion, and discuss the stationary distribution and optimal control of the stochastic dengue model. At first, we show the existence of th…
View article: Threshold dynamics and optimal control on an age-structured SIRS epidemic model with vaccination
Threshold dynamics and optimal control on an age-structured SIRS epidemic model with vaccination Open
We consider a vaccination control into a age-structured susceptible-infective-recovered-susceptible (SIRS) model and study the global stability of the endemic equilibrium by the iterative method. The basic reproduction number $ R_0 $ is ob…
View article: The asymptotic stability of numerical analysis for stochastic age-dependent cooperative Lotka-Volterra system
The asymptotic stability of numerical analysis for stochastic age-dependent cooperative Lotka-Volterra system Open
In this study, we explore a stochastic age-dependent cooperative Lotka-Volterra (LV) system with an environmental noise. By applying the theory of M-matrix, we prove the existence and uniqueness of the global solution for the system. Since…
View article: Finite-time stability and optimal control of an impulsive stochastic reaction-diffusion vegetation-water system driven by L$ {\rm \acute{e}} $vy process with time-varying delay
Finite-time stability and optimal control of an impulsive stochastic reaction-diffusion vegetation-water system driven by L$ {\rm \acute{e}} $vy process with time-varying delay Open
In this paper, a reaction-diffusion vegetation-water system with time-varying delay, impulse and L$ {\rm \acute{e}} $vy jump is proposed. The existence and uniqueness of the positive solution are proved. Meanwhile, mainly through the princ…
View article: Near-optimal control and threshold behavior of an avian influenza model with spatial diffusion on complex networks
Near-optimal control and threshold behavior of an avian influenza model with spatial diffusion on complex networks Open
Near-optimization is as sensible and important as optimization for both theory and applications. This paper concerns the near-optimal control of an avian influenza model with saturation on heterogeneous complex networks. Firstly, the basic…
View article: Numerical approximation of basic reproduction number for an age-structured HIV infection model with both virus-to-cell and cell-to-cell transmissions
Numerical approximation of basic reproduction number for an age-structured HIV infection model with both virus-to-cell and cell-to-cell transmissions Open
In general, the basic reproduction number (R0) cannot be explicitly calculated for HIV(Human Immunodeficiency Virus) infection model with age-structured in a infinite dimensional spaces. To find R0, we need to transform the HIV model into …
View article: Stability analysis and optimal control of avian influenza model on complex networks
Stability analysis and optimal control of avian influenza model on complex networks Open
In this paper, an avian influenza model with saturation and psychological effect on heterogeneous complex networks is proposed. Firstly, the basic reproduction number $\mathscr{R}_{0}$ is given through mathematical analysis, which is a thr…