Guoqiang Ren
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View article: Radiomics model based on dual-energy CT venous phase parameters to predict Ki-67 levels in gastrointestinal stromal tumors
Radiomics model based on dual-energy CT venous phase parameters to predict Ki-67 levels in gastrointestinal stromal tumors Open
Objective To develop and validate a radiomics model based on the features of the Dual-Energy CT (DECT) venous phase iodine density maps and effective atomic number maps to predict Ki-67 expression levels in gastrointestinal stromal tumors …
View article: Optimal control and dynamics of a nonlocal diffusion SVIR epidemic model
Optimal control and dynamics of a nonlocal diffusion SVIR epidemic model Open
View article: Global stabilization in a Keller-Segel-growth system with indirect signal production
Global stabilization in a Keller-Segel-growth system with indirect signal production Open
View article: Global boundedness in a two-dimensional chemotaxis system with nonlinear diffusion and singular sensitivity
Global boundedness in a two-dimensional chemotaxis system with nonlinear diffusion and singular sensitivity Open
In this study, we investigate the two-dimensional chemotaxis system with nonlinear diffusion and singular sensitivity: u t = ∇ ⋅ ( u θ − 1 ∇ u ) − χ ∇ ⋅ u v ∇ v , x ∈ Ω , t > 0 , v t = Δ…
View article: Global existence and asymptotic behavior in a two-species chemotaxis system with signal production
Global existence and asymptotic behavior in a two-species chemotaxis system with signal production Open
In this work we consider a two-species chemotaxis system with Lotka-Volterra type competitive kinetics in a three-dimensional bounded domain with smooth boundary. We show that the fully parabolic system admits at least one global generaliz…
View article: Boundedness in a higher-dimensional singular chemotaxis-growth system with indirect signal production *
Boundedness in a higher-dimensional singular chemotaxis-growth system with indirect signal production * Open
In this paper, we consider a higher-dimensional singular chemotaxis-growth system with indirect signal production. Under appropriate regularity assumption on the initial data, the global boundedness of classical solution is obtained. Our r…
View article: Global solvability and large time behavior in a two-species chemotaxis-consumption model
Global solvability and large time behavior in a two-species chemotaxis-consumption model Open
In this work, we study global existence, eventual smoothness and large time behavior of positive solutions for the following two-species chemotaxis consumption model:$ \left\{ \begin{array}{lll} &u_t = \Delta u-\chi_1\nabla \cdot ( u\nabla…
View article: Global existence and convergence to steady states for a predator-prey model with both predator- and prey-taxis
Global existence and convergence to steady states for a predator-prey model with both predator- and prey-taxis Open
In this work we consider a two-species predator-prey chemotaxis model \begin{document}$ \left\{ \begin{array}{lll} u_t = d_1\Delta u+\chi_1\nabla\cdot(u\nabla v)+u(a_1-b_{11}u-b_{12}v), &x\in \Omega, t>0, \\[0.2cm] v_t = d…
View article: Global solvability in a two-species chemotaxis system with logistic source
Global solvability in a two-species chemotaxis system with logistic source Open
In this paper, we consider a two-species chemotaxis system with a logistic source. We present the global existence of generalized solutions for the two-species chemotaxis system under appropriate regularity assumptions on the initial data.…
View article: Global solvability and asymptotical behavior in a two-species chemotaxis model with signal absorption
Global solvability and asymptotical behavior in a two-species chemotaxis model with signal absorption Open
In this work, we study global existence, eventual smoothness and asymptotical behavior of positive solutions for a two-species chemotaxis consumption model in a bounded smooth but not necessarily convex domain $Ω\subset \mathbb{R}^n (n=2,3…
View article: Global existence in a chemotaxis system with singular sensitivity and signal production
Global existence in a chemotaxis system with singular sensitivity and signal production Open
In this work we consider the chemotaxis system with singular sensitivity and signal production in a two dimensional bounded domain. We present the global existence of weak solutions under appropriate regularity assumptions on the initial d…
View article: Global boundedness of solutions to a chemotaxis-fluid system with singular sensitivity and logistic source
Global boundedness of solutions to a chemotaxis-fluid system with singular sensitivity and logistic source Open
In this paper, we investigate the chemotaxis-fluid system with singular sensitivity and logistic source in bounded convex domain with smooth boundary. We present the global existence of very weak solutions under appropriate regularity assu…
View article: GLOBAL EXISTENCE AND ASYMPTOTIC BEHAVIOR IN A THREE-DIMENSIONAL TWO-SPECIES CHEMOTAXIS-STOKES SYSTEM WITH TENSOR-VALUED SENSITIVITY
GLOBAL EXISTENCE AND ASYMPTOTIC BEHAVIOR IN A THREE-DIMENSIONAL TWO-SPECIES CHEMOTAXIS-STOKES SYSTEM WITH TENSOR-VALUED SENSITIVITY Open