Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Mohammed Guedda"'
Publikováno v:
Alexandria Engineering Journal, Vol 60, Iss 3, Pp 3419-3427 (2021)
The conserved Kuramoto–Sivashinsky equation can be considered as the one- and two-dimensional evolution equation for amorphous thin film growth. The role of the nonlinear term Δ(∇u2) and the properties of the solutions are investigated analytica
Externí odkaz:
https://doaj.org/article/83960acd314f43cc80a8736d91a8eecd
Autor:
Julien CAUDEVILLE, Corentin REGRAIN, Frederic TOGNET, Roseline BONNARD, Mohammed GUEDDA, Celine BROCHOT, Maxime BEAUCHAMP, Laurent LETINOIS, Laure MALHERBE, Fabrice MARLIERE, Francois LESTREMAU, Karen CHARDON, Veronique BACH, Florence Anna ZEMAN
Publikováno v:
Environmental Health, Vol 20, Iss 1, Pp 1-16 (2021)
Abstract Background At a regional or continental scale, the characterization of environmental health inequities (EHI) expresses the idea that populations are not equal in the face of pollution. It implies an analysis be conducted in order to identify
Externí odkaz:
https://doaj.org/article/918529fe9a7b4d3182dea915f64d1b23
Autor:
Alexander Gladkov, Mohammed Guedda
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2020, Iss 63, Pp 1-11 (2020)
We consider semilinear parabolic equations with nonlinear boundary conditions. We give conditions which guarantee global existence of solutions as well as blow-up in finite time of all solutions with nontrivial initial data. The results depend on the
Externí odkaz:
https://doaj.org/article/eecd280fecc141c7bb1c6978825fe69c
Publikováno v:
Electronic Journal of Qualitative Theory of Differential Equations, Vol 2020, Iss 11, Pp 1-11 (2020)
Global existence, positivity, uniform boundedness and extinction results of solutions to a system of reaction-diffusion equations on unbounded domain modeling two species on a predator–prey relationship is considered.
Externí odkaz:
https://doaj.org/article/15dc5c4dc6c1465881d19b330d532c19
Publikováno v:
Mathematical Modelling and Analysis, Vol 25, Iss 2 (2020)
The one-dimensional Kardar-Parisi-Zhang dynamic interface growth equation with the self-similar ansatz is analyzed. As a new feature additional analytic terms are added. From the mathematical point of view, these can be considered as various noise di
Externí odkaz:
https://doaj.org/article/31e4f6a24f7a44818801c1ad77c1f1c1
Publikováno v:
Electronic Journal of Differential Equations, Vol 2011, Iss 68,, Pp 1-5 (2011)
In this note, we study the evolution equation $$ partial_t h = -upartial^2_x h-Kpartial^4_x h +lambda_1(partial_x h)^2-lambda_2partial^2_x(partial_x h)^2. $$ which was introduced by Munoz-Garcia [9] in the context of erosion by ion beam sputtering. W
Externí odkaz:
https://doaj.org/article/a5fa9af2f2b64da2b8222b123bf13a10
Publikováno v:
Electronic Journal of Differential Equations, Vol 2007, Iss 78, Pp 1-15 (2007)
This paper concerns the singular solutions of the equation $$ f''' +kappa ff''-eta {f'}^2 = 0, $$ where $eta < 0$ and $kappa = 0$ or 1. This equation arises when modelling heat transfer past a vertical flat plate embedded in a saturated porous medium
Externí odkaz:
https://doaj.org/article/dd0108e851574b69b4e87dde9bbfb587
Autor:
Mohammed Guedda
Publikováno v:
Electronic Journal of Differential Equations, Vol 2003, Iss 53, Pp 1-5 (2003)
This work shows the absence of global solutions to the equation $$ u_{tt} = Delta u + p^{-k}|u|^m, $$ in the Minkowski space $mathbb{M}_0=mathbb{R}imesmathbb{R}^N$, where $ m > 1$, $(N-1)m < N+1$, and $p $ is a conformal factor approaching 0 at infin
Externí odkaz:
https://doaj.org/article/56f38c929fc6405aa795f9ae0ac5d99f
Autor:
Mohammed Guedda, Mokhtar Kirane
Publikováno v:
Electronic Journal of Differential Equations, Vol Conference, Iss 09, Pp 149-160 (2002)
For a fixed $ p $ and $ sigma > -1 $, such that $ p >max{1,sigma+1}$, one main concern of this paper is to find sufficient conditions for non solvability of [ u_t = -(-Delta)^{frac{beta}{2}}u - V(x)u + t^sigma h(x)u^p + W(x,t), ] posed in $ S_T:=math
Externí odkaz:
https://doaj.org/article/305a71666bd649c5bcd1aab8d7897b08
Autor:
Mohammed Guedda
Publikováno v:
Electronic Journal of Differential Equations, Vol 2001, Iss 49, Pp 1-4 (2001)
The purpose of this note is to study the uniqueness of solutions to $ u'' -u^3 + (t-c)u = 0$, for $ t in (0,+infty)$ with Neumann condition at 0. Assuming a certain conditon at infinity, Helfer and Weissler [6] have found a unique solution. We show t
Externí odkaz:
https://doaj.org/article/44f958f956c04e1889559931a6ff2992