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This paper focuses on traveling wave solutions for the so-called Rosenzweig-MacArthur model with spatial diffusion. The main results of this note are concerned with the existence and uniqueness of traveling wave solution as well as periodic…

偏微分方程分析 · 数学 2019-10-25 Arnaud Ducrot , Zhihua Liu , Pierre Magal

We consider the one-dimensional KPP-equation driven by space-time white noise and extend the construction of travelling wave solutions arising from Heavyside initial data from [Tribe, 1996, MR1396765] to non-negative continuous functions…

概率论 · 数学 2015-08-05 Sandra Kliem

In two papers we proposed a continuum model for the dynamics of systems of self propelling particles with kinematic constraints on the velocities and discussed some of its properties. The model aims to be analogous to a discrete algorithm…

流体动力学 · 物理学 2009-11-13 V. I. Ratushnaya , D. Bedeaux , V. L. Kulinskii , A. V. Zvelindovsky

A theory is presented for wave-driven propulsion of floating bodies driven into oscillation at the fluid interface. By coupling the equations of motion of the body to a quasi-potential flow model of the fluid, we derive expressions for the…

流体动力学 · 物理学 2023-10-20 GP Benham , O Devauchelle , SJ Thomson

This paper is concerned with the globally exponential stability of traveling wave fronts for a class of population dynamics model with quiescent stage and delay. First, we establish the comparison principle of solutions for the population…

动力系统 · 数学 2020-11-26 Yonghui Zhou , Shuguan Ji

This paper presents a novel methodology for the direct numerical modeling and simulation of turbulent flows. The kinetic model equation is firstly extended to turbulent flow with the account of coupled evolution of kinetic, thermal, and…

计算物理 · 物理学 2025-03-11 Xiaojian Yang , Kun Xu

A set of travelling wave solutions to a hyperbolic generalization of the convection-reaction-diffusion is studied by the methods of local nonlinear alnalysis and numerical simulation. Special attention is paid to displaying appearance of…

斑图形成与孤子 · 物理学 2009-11-17 Vsevolod Vladimirov

Populations are heterogeneous, deviating in numerous ways. Phenotypic diversity refers to the range of traits or characteristics across a population, where for cells this could be the levels of signalling, movement and growth activity, etc.…

细胞行为 · 定量生物学 2025-04-11 Tommaso Lorenzi , Kevin J Painter , Chiara Villa

We derive a new hyperbolic model describing the propagation of internal waves in a stratified shallow water with a non-hydrostatic pressure distribution. The construction of the hyperbolic model is based on the use of additional…

流体动力学 · 物理学 2020-05-28 Alexander Chesnokov , Valery Liapidevskii

The present paper is concerned with the existence of traveling wave solutions of the asymptotic model, derived by the authors in a previous work, to approximate the unidirectional evolution of a collision-free plasma in a magnetic field.…

偏微分方程分析 · 数学 2024-10-14 Diego Alonso-Orán , Angel Durán , Rafael Granero-Belinchón

This is a study of two-dimensional steady periodic travelling waves on the surface of an infinitely deep irrotational ocean, when the top streamline is in contact with a membrane which has a nonlinear response to stretching and bending, and…

偏微分方程分析 · 数学 2008-05-06 Pietro Baldi , John F. Toland

A well-known optimal velocity (OV) model describes vehicle motion along a single lane road, which reduces to a perturbed modified Korteweg-de Vries (mKdV) equation within the unstable regime. Steady travelling wave solutions to this…

动力系统 · 数学 2016-08-12 Laura Hattam

Some classes of the so called "travelling wave" solutions of Einstein and Einstein - Maxwell equations in General Relativity and of dynamical equations for massless bosonic fields in string gravity in four and higher dimensions are…

广义相对论与量子宇宙学 · 物理学 2015-11-13 George Alekseev

We describe various types of traveling fronts of bistable reaction-diffusion cellular automata. These dynamical systems with discrete time, space, and state spaces can be seen as fully discrete versions of widely studied bistable…

动力系统 · 数学 2024-12-24 Daniel Špale , Petr Stehlík

We prove the existence and uniqueness of a family of travelling waves in a degenerate (or singular) quasilinear parabolic problem that may be regarded as a generalization of the semilinear Fisher-Kolmogorov-Petrovski-Piscounov equation for…

经典分析与常微分方程 · 数学 2015-02-18 Pavel Drabek , Peter Takac

In this work, a hepatitis B virus infection dynamics model is proposed including the spatial dependence of viruses. The existence of traveling waves for the proposed model is established through the application of the celebrated Gersgorin…

动力系统 · 数学 2024-02-06 Rupchand Sutradhar , D C Dalal

The theory of traveling waves and spreading speeds is developed for time-space periodic monotone semiflows with monostable structure. By using traveling waves of the associated Poincar\'e maps in a strong sense, we establish the existence…

偏微分方程分析 · 数学 2015-04-16 Jian Fang , Xiao Yu , Xiao-Qiang Zhao

In this paper we consider a scalar parabolic equation on a star graph; the model is quite general but what we have in mind is the description of traffic flows at a crossroad. In particular, we do not necessarily require the continuity of…

偏微分方程分析 · 数学 2017-01-30 Andrea Corli , Lorenzo Di Ruvo , Luisa Malaguti , Massimiliano Rosini

We consider a lattice equation modelling one-dimensional metamaterials formed by a discrete array of nonlinear resonators. We focus on periodic travelling waves due to the presence of a periodic force. The existence and uniqueness results…

数学物理 · 物理学 2024-01-26 M. Agaoglou , M. Feckan , M. Pospisil , V. M. Rothos , H. Susanto

Reaction-diffusion models describing interactions between vegetation and water reveal the emergence of several types of patterns and travelling wave solutions corresponding to structures observed in real-life. Increasing their accuracy by…

动力系统 · 数学 2023-12-20 Paul Carter , Arjen Doelman , Annalisa Iuorio , Frits Veerman