Zhanping Wang
YOU?
Author Swipe
View article: Stability of nonlinear population systems with individual scale and migration
Stability of nonlinear population systems with individual scale and migration Open
In this paper, we study the stability of a nonlinear population system with a weighted total size of scale structure and migration in a polluted environment, where fertility and mortality depend on the density in different ways. We first p…
View article: Optimal allocation of regional water resources based on simulated annealing particle swarm optimization algorithm
Optimal allocation of regional water resources based on simulated annealing particle swarm optimization algorithm Open
Given the fast growth of economy in Ningxia, China, contradictions between the increase of water resources and the decrease of water supply become increasingly prominent. Therefore, it is critical to utilize limited water resources in a ra…
View article: Response of runoff towards land use changes in the Yellow River Basin in Ningxia, China
Response of runoff towards land use changes in the Yellow River Basin in Ningxia, China Open
Since the Yellow River is a main source of water in Ningxia China, maintaining its healthy ecological environment is vital to Ningxia and the neighboring areas. Changes of land use caused by human activities such as population growth, urba…
View article: Stability of a class of nonlinear hierarchical size-structured population model
Stability of a class of nonlinear hierarchical size-structured population model Open
This paper investigates the existence of positive equilibrium as well as the stability of positive equilibrium and zero equilibrium in a nonlinear size-structured hierarchical population model. Under the condition that larger individuals a…
View article: Gorenstein flat modules with respect to duality pairs
Gorenstein flat modules with respect to duality pairs Open
Let $\mathcal{X}$ be a class of left $R$-modules, $\mathcal{Y}$ be a class of right $R$-modules. In this paper, we introduce and study Gorenstein $(\mathcal{X}, \mathcal{Y})$-flat modules as a common generalization of some known modules su…
View article: Stability of Gorenstein objects in triangulated categories
Stability of Gorenstein objects in triangulated categories Open
Let $\mathcal{C}$ be a triangulated category with a proper class $\xi$ of triangles. Asadollahi and Salarian introduced and studied $\xi$-Gorenstein projective and $\xi$-Gorenstein injective objects, and developed Gorenstein homological al…
View article: Gorenstein homological dimensions of modules over triangular matrix rings
Gorenstein homological dimensions of modules over triangular matrix rings Open
Let $A$ and $B$ be rings, $U$ a $(B, A)$-bimodule, and $T=\left(\begin{smallmatrix} A & 0 \\ U & B \\\end{smallmatrix}\right)$ the triangular matrix ring. In this paper, we characterize the Gorenstein homological dimensions of modules over…