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Mostrando ítems 21-30 de 30
Artículo
Relating disease and predation: equilibria of an epidemic model
(Wiley, 2005)
In this paper, we would like compare the spread of an infectious disease in a population without the influence of a predator and under its influence. We show that it is possible to control an epidemic in a population with ...
Artículo
A variational approach to a nonlocal elliptic problem with sign-changing nonlinearity
(De Gruyter, 2011-05)
Artículo
Anti-angiogenic therapy based on the binding receptors
(American Institute of Mathematical Sciences, 2012-11)
This paper deals with a nonlinear system of partial differential equations modeling the effect of an anti-angiogenic therapy based on an agent that binds specific receptors of the endothelial cells. We study the time-dependent ...
Artículo
Positive solutions for the degenerate logistic indefinite superlinear problem the slow diffusion case
(University of Houston, 2003)
In this work we study the existence, stability and multiplicity of the positive steady-states solutions of the degenerate logistic indefinite superlinear problem. By an adequate change of variable, the problem is transformed ...
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Combining linear and nonlinear diffusion
(De Gruyter, 2004-08)
In this paper we study a generalized porous medium equation where the diffusion rate, say m(x) —spatially heterogeneous—, is assumed to be linear, m = 1, on a piece of the support domain, Ω1, and slow nonlinear, m(x) > 1, ...
Artículo
Study of a logistic equation with local and non-local reaction terms
(Nicolaus Copernicus University in Torun, Juliusz Schauder Centre for Nonlinear Studies, 2016-06)
In this work we examine a logistic equation with local and nonlocal reaction terms both for time dependent and steady-state problems. Mainly, we use bifurcation and monotonicity methods to prove the existence of positive ...
Artículo
A Lotka-Volterra symbiotic model with cross-diffusion
(Elsevier, 2009-03-01)
The main goal of this paper is to study the existence and non-existence of coexistence states for a Lotka-Volterra symbiotic model with cross-diffusion. We use mainly bifurcation methods and a priori bounds to give sufficient ...
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On the structure of the positive solutions of the logistic equation with nonlinear diffusion
(Elsevier, 2002-04-01)
Artículo
An angiogenesis model with nonlinear chemotactic response and flux at the tumor boundary
(Elsevier, 2010-01-01)
In this paper we consider a parabolic problem as well as its stationary counterpart of a model arising in angiogenesis. The problem includes a chemotaxis type term and a nonlinear boundary condition at the tumor boundary. ...