Global solvability and stabilization in a two-dimensional cross-diffusion system modeling urban crime propagation
Global solvability and stabilization in a two-dimensional cross-diffusion system modeling urban crime propagation
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模拟城市犯罪传播的二维交叉扩散系统的全局可解性和稳定性
DOI:
10.1016/j.anihpc.2019.02.004
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
Winkler
中科院分区:
文献类型:
--
作者:
Winkler
The system {u t= Δ u− χ∇⋅(u v∇ v)− u v+ B 1 (x, t), v t= Δ v+ u v− v+ B 2 (x, t),(⋆) is considered in a disk Ω⊂ R 2, with a positive parameter χ and given nonnegative and suitably regular functions B 1 and B 2 defined on Ω×(0,∞). In the particular version obtained when χ= 2,(⋆) was proposed in [31] as a model for crime propagation in urban regions. Within a suitable generalized framework, it is shown that under mild assumptions on the parameter functions and the initial data the no-flux initial-boundary value problem for (⋆) possesses at least one global solution in the case when all model ingredients are radially symmetric with respect to the center of Ω. Moreover, under an additional hypothesis on stabilization of the given external source terms in both equations, these solutions are shown to approach the solution of an elliptic boundary value problem in an appropriate sense. The analysis is based on deriving a priori estimates for a family of approximate problems, in a first step achieving some spatially global but weak initial regularity information which in a series of spatially localized arguments is thereafter successively improved. To the best of our knowledge, this is the first result on global existence of solutions to the two-dimensional version of the full original system (⋆) for arbitrarily large values of χ.
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DOI:
10.3934/dcdsb.2014.19.1373
发表时间:
2014-07-01
影响因子:
1.2
作者:
Kolokolnikov, Theodore;Ward, Michael J.;Wei, Juncheng
通讯作者:
Wei, Juncheng
DOI:
10.1016/j.physd.2012.08.003
发表时间:
2013
期刊:
Physica D: Nonlinear Phenomena
影响因子:
--
作者:
N. Rodríguez
通讯作者:
N. Rodríguez
DOI:
10.1137/130922744
发表时间:
2013
期刊:
SIAM J. Math. Anal.
影响因子:
--
作者:
H. Berestycki;Juncheng Wei;M. Winter
通讯作者:
M. Winter
影响因子:
1.9
作者:
Tse, W. H.;Ward, M. J.
通讯作者:
Ward, M. J.
影响因子:
5.8
作者:
FELSON, M
通讯作者:
FELSON, M