Showing 1 - 10 of 104
The scaling behavior of nonlocal surface growth equations are analyzed using a Flory-type approach introduced by Hentschel and Family [Phys. Rev. Lett. 66 (1991) 1982]. The growth equations studied include the nonlocal Kardar–Parisi–Zhang, nonlocal Sun–Guo–Grant, and nonlocal Lai–Das...
Persistent link: https://www.econbiz.de/10010873392
We discuss recently developed methods of studying long-time properties of initially separated reaction–diffusion systems with a reversible reaction of type A+B⇌C, including both analytical and numerical techniques.
Persistent link: https://www.econbiz.de/10011057026
In an earlier study [J.C. Lewis, H. Wheeler, Physica A 271 (1999) 63–86] of the dependence on jump probability p of the rates of diffusion-controlled reactions on simple cubic lattices in dimension 2≤d≤4 we found that the dependence was non-linear, which is not in accord with what would be...
Persistent link: https://www.econbiz.de/10011058078
We consider a hierarchical set of dynamical systems, each of which may support individual pattern formation processes. In the limit case of weak top-down interactions it provides a suitable framework for the design of self-organizing scenarios both from constructional and evolutionary...
Persistent link: https://www.econbiz.de/10011061397
A one-dimensional reaction–diffusion model consisting of two species of particles and vacancies on a ring is introduced. The number of particles in one species is conserved while in the other species it can fluctuate because of creation and annihilation of particles. It has been shown that the...
Persistent link: https://www.econbiz.de/10010589190
Pattern formation in nonlinear complex systems is one of the central problems of the natural, social and technological sciences. In this paper, we consider a mathematical model of predator–prey interaction subject to self as well as cross-diffusion, arising in processes described by a system...
Persistent link: https://www.econbiz.de/10011117180
We investigate activator–inhibitor systems in two spatial dimensions with a non-local coupling, for which the interaction strength decreases with the lattice distance as a power-law. By varying a single parameter we can pass from a local (Laplacian) to a global (all-to-all) coupling type. We...
Persistent link: https://www.econbiz.de/10011117868
Persistent link: https://www.econbiz.de/10010539291
Employing Brouwer’s fixed point theorem, matrix theory, a continuation theorem of the coincidence degree and inequality analysis, the authors study further global exponential stability and the existence of periodic solutions of a class of cellular neural networks with delays (DCNNs) in this...
Persistent link: https://www.econbiz.de/10010748616
This paper is concerned with analysis problem for the global exponential stability of the Cohen–Grossberg neural networks with discrete delays and with distributed delays. We first prove the existence and uniqueness of the equilibrium point under mild conditions, assuming neither...
Persistent link: https://www.econbiz.de/10010748621