Results 11 to 20 of about 143 (134)

Bifurcation in a G0 Model of Hematological Stem Cells With Delay

open access: yesAbstract and Applied Analysis
JEL Classification: 34C25, 34K18 ...
Ma Suqi, S. J. Hogan
doaj   +3 more sources

An improved Mickens’ solution for nonlinear vibrations

open access: yesAlexandria Engineering Journal
The Duffing equation and other nonlinear equations of motion of nonlinear vibrations are widely applied in the fields of engineering and science, especially mechanical and electrical engineering.
M.M. Ayub Hossain, B.M. Ikramul Haque
doaj   +2 more sources

Topical treatment of equine sarcoids with imiquimod 5% cream or Sanguinaria canadensis and zinc chloride – an open prospective study

open access: yesVeterinary Dermatology, Volume 31, Issue 6, Page 471-e126, December 2020., 2020
Background – Equine sarcoids are the most prevalent skin neoplasm in horses worldwide. Although several treatments are available, none are consistently effective and recurrence is common. Objectives – To evaluate the efficacy and safety of topical imiquimod 5% cream and Sanguinaria canadensis + zinc chloride for treatment of equine sarcoids and ...
Carina M. Pettersson   +3 more
wiley   +1 more source

Singular-Perturbations-Based Analysis of Dynamic Consensus in Directed Networks of Heterogeneous Nonlinear Systems [PDF]

open access: yes, 2022
We analyze networked heterogeneous nonlinear systems, with diffusive coupling and interconnected over a generic static directed graph. Due to the network's hetereogeneity, complete synchronization is impossible, in general, but an emergent dynamics ...
Maghenem, Mohamed   +2 more
core   +2 more sources

SOME NEW RESULTS OF INITIAL BOUNDARY PROBLEM CONTAIN ABC-FRACTIONAL DIFFERENTIAL EQUATIONS OF ORDER α∈(2,3) [PDF]

open access: yes, 2023
The purpose of this research is to investegate the existence and uniqueness of solutions for a new  class of Atangana-Baleanu fractional differential equations of order  with periodic boundary conditions.
Muhammad, Muhammad, Rafeeq, Ava
core   +1 more source

Nonlinear systems with a partial Nash type equilibrium [PDF]

open access: yes, 2021
In this paper fixed point arguments and a critical point technique are combined leading to hybrid existence results for a system of three operator equations where only two of the equations have a variational structure.
STAN, Andrei
core   +1 more source

On the existence of a periodic solution of the Liénard system [PDF]

open access: yes, 2021
The Li\\u27{e}nard system $\frac{dx}{dt}=y,\quad \frac{dy}{dt}=-f(x)y-g(x)$ is considered. Under some assumptions on functions $f(x)$ and $g(x)$, we estimate the domain of location of the unique stable limit cycle of the Li\\u27{e}nard system.This ...
IGNATYEV, Alexander
core   +1 more source

A class of differential systems of even degree with exact non-algebraic limit cycles [PDF]

open access: yes, 2020
Up until now all the polynomial differential systems for which non- algebraic limit cycles are known explicitly have degree odd. Here we show that that there are polynomial systems of even degree with explicit no-algebraic limit cycles. To our knowledge,
BENDJEDDOU, Ahmed   +2 more
core   +1 more source

Localization of periodic orbits of autonomous systems based on high‐order extremum conditions

open access: yesMathematical Problems in Engineering, Volume 2004, Issue 3, Page 277-290, 2004., 2004
This paper gives localization and nonexistence conditions of periodic orbits in some subsets of the state space. Mainly, our approach is based on high‐order extremum conditions, on high‐order tangency conditions of a nonsingular solution of a polynomial system with an algebraic surface, and on some ideas related to algebraically‐dependent polynomials ...
Konstantin E. Starkov
wiley   +1 more source

Periodic solutions and stability for a delayed discrete ratio‐dependent predator‐prey system with Holling‐type functional response

open access: yesDiscrete Dynamics in Nature and Society, Volume 2004, Issue 2, Page 325-343, 2004., 2004
The existence of positive periodic solutions for a delayed discrete predator‐prey model with Holling‐type‐III functional response N1(k+1)=N1(k)exp{b1(k)-a1(k)N1(k-[τ1])-α1(k)N1(k)N2(k)/(N12(k)+m2N22(k))}, N2(k+1)=N2(k)exp{-b2(k)+α2(k)N12(k-[τ2])/(N12(k-[τ2])+m2N22(k-[τ2]))} is established by using the coincidence degree theory.
Lin-Lin Wang, Wan-Tong Li
wiley   +1 more source

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