Results 41 to 50 of about 300 (139)

Exact solutions for the ion sound Langmuir wave model by using two novel analytical methods

open access: yesResults in Physics, 2020
In the present paper, the system of equations for the ion sound and Langmuir waves (SEISLWs) is considered to obtain the new solitary wave solutions of the non-linear evolution equations. Here, we used the relatively two new analytical methods to achieve
A. Tripathy, S. Sahoo
doaj   +1 more source

Existence and nonexistence of entire solutions to the logistic differential equation

open access: yesAbstract and Applied Analysis, Volume 2003, Issue 17, Page 995-1003, 2003., 2003
We consider the one‐dimensional logistic problem (rαA(|u′|)u′) ′=rαp(r)f(u) on (0, ∞), u(0) > 0, u′(0) = 0, where α is a positive constant and A is a continuous function such that the mapping tA(|t|) is increasing on (0, ∞). The framework includes the case where f and p are continuous and positive on (0, ∞), f(0) = 0, and f is nondecreasing.
Marius Ghergu, Vicenţiu Rădulescu
wiley   +1 more source

Global stability in n-dimensional discrete Lotka-Volterra predator-prey models

open access: yes, 2014
There are few theoretical works on global stability of Euler difference schemes for two-dimensional Lotka-Volterra predator-prey models. Furthermore no attempt is made to show that the Euler schemes have positive solutions.
S. Choo
semanticscholar   +1 more source

ON THE OBSERVABILITY AND STATE ESTIMATION IN A CLASS OF GENE-EXPRESSION SYSTEM

open access: yesDynamic systems and applications, 2018
The failure of available physical sensors for the online measurement of protein concentration in cells is a key problem to understanding the transition in bio-systems.
R. Aguilar‐López, J. Mata-Machuca
semanticscholar   +1 more source

Effect of a ceruminolytic ear cleaner on clinical, microbiological and ear canal microbiome evolution in canine erythemato‐ceruminous otitis externa associated with proliferation of Malassezia yeasts

open access: yesVeterinary Dermatology, Volume 36, Issue 5, Page 668-678, October 2025.
Background – Erythemato‐ceruminous otitis externa (ECOE) is commonly associated with Malassezia spp. and microbial imbalance. Hypothesis/Objective – To assess the clinical performance of an ear cleaner in dogs suffering from ECOE associated with Malassezia spp. overgrowth and to measure its impact on the microbiota. Conclusions and Clinical Relevance –
Amaury Briand   +11 more
wiley   +1 more source

The generalized Turner‐Bradley‐Kirk‐Pruitt equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 32, Issue 2, Page 73-80, 2002., 2002
Several recent results pertaining to nonlinear equations of ecology are applied to a generalization of the Turner‐Bradley‐Kirk‐Pruitt (TBKP) equation, which illustrates a variety of interesting possibilities as regards persistence and extinction. The chief novelty consists in exploiting the value set of the equation, that is, the set of values taken on
Ray Redheffer
wiley   +1 more source

New transform iterative method for solving some Klein-Gordon equations

open access: yesResults in Physics, 2018
In this study, we treat some Klein-Gordon equations (KGEs). We propose a novel iterative approach called the Elzaki iterative method (EIM). This method, which clearly depends on the choice of the initial values, is based on the new iteration method (NIM)
Aisha Abdullah Alderremy   +2 more
doaj   +1 more source

STAGNATION POINT FLOW OVER A STRETCHING SHEET WITH NEWTONIAN HEATING USING LAPLACE ADOMIAN DECOMPOSITION METHOD

open access: yes, 2016
Our aim in this piece of work is to demonstrate the power of Laplace Adomian decomposition method in approximating the solution of nonlinear differential equations governing stagnation point flow over a stretching sheet with Newtonian heating.
M. Mageswari, M. Nirmala
semanticscholar   +1 more source

Investigation of a Jeffery-Hamel flow between two rectangular inclined smooth walls using the Differential Transform Method

open access: yesJournal of Applied Mathematics and Computational Mechanics, 2018
In this article, the Differential Transform Method (DTM) is applied to derive a semi-analytic solution for the non-linear MHD (Magneto Hydro Dynamics) Jeffery-Hamel flow between rectangular inclined smooth planes.
N. Patel, R. Meher
semanticscholar   +1 more source

An Analysis of Controllability Criteria for Higher‐Order Caputo Fractional Differential Systems With State and Control Delays

open access: yesInternational Journal of Differential Equations, Volume 2025, Issue 1, 2025.
The present study investigates the controllability problems for higher‐order semilinear fractional differential systems (HOSLFDSs) with state and control delays in the context of the Caputo fractional derivative. Exploiting the invertibility of the Gramian matrix of fractional order, the necessary and sufficient conditions for the controllability ...
Anjapuli Panneer Selvam   +4 more
wiley   +1 more source

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