Results 21 to 30 of about 863 (155)

Dynamic behaviors of a Lotka-Volterra type predator-prey system with Allee effect on the predator species and density dependent birth rate on the prey species

open access: yesOpen Mathematics, 2019
A Lotka-Volterra type predator-prey system with Allee effect on the predator species and density dependent birth rate on the prey species is proposed and studied.
Chen Fengde   +3 more
doaj   +1 more source

A mathematical analysis of the impact of maternally derived immunity and double-dose vaccination on the spread and control of measles

open access: yesComputational and Mathematical Biophysics, 2023
Measles is a highly communicable viral infection that mostly affects children aged 5 years and below. Maternal antibodies in neonates help protect them from infectious diseases, including measles. However, maternal antibodies disappear a few months after
Opoku Samuel   +2 more
doaj   +1 more source

Cluster formation for multi-strain infections with cross-immunity [PDF]

open access: yes, 2005
Many infectious diseases exist in several pathogenic variants, or strains, which interact via cross-immunity. It is observed that strains tend to self-organise into groups, or clusters.
Clavez, V.   +2 more
core   +2 more sources

Dynamical analysis of a Lotka Volterra commensalism model with additive Allee effect

open access: yesOpen Mathematics, 2022
We propose and analyze a Lotka-Volterra commensal model with an additive Allee effect in this article. First, we study the existence and local stability of possible equilibria.
He Xiaqing   +3 more
doaj   +1 more source

THE ROLE OF TRANSFER FUNCTION IN THE STUDY OF STABILITY ANALYSIS OF FEEDBACK CONTROL SYSTEM WITH DELAY

open access: yesInternational Journal of Apllied Mathematics, 2019
Loop delays appear obviously in several control applications. Due to loop delays, more complications arrive in feedback control systems. Loop delays cannot be avoided in a system controlled via communication networks as it decreases the stability of the ...
D. Piriadarshani, S. S. Sujitha
semanticscholar   +1 more source

Gene Content and Distribution in the Nuclear Genome of Fragaria vesca

open access: yesThe Plant Genome, Volume 2, Issue 1, March 2009., 2009
Thirty fosmids were randomly selected from a library of Fragaria vesca subsp. americana (cv. Pawtuckaway) DNA. These fosmid clones were individually sheared, and ∼4‐ to 5‐kb fragments were subcloned. Subclones on a single 384‐well plate were sequenced bidirectionally for each fosmid. Assembly of these data yielded 12 fosmid inserts completely sequenced,
Ana Clara Pontaroli   +7 more
wiley   +1 more source

Within-host models of dengue virus transmission with immune response

open access: yesComputational and Mathematical Biophysics, 2023
Dengue fever is an infectious viral fever. The complex behavior of the virus within the body can be explained through mathematical models to understand the virus’s dynamics.
Muthu Poosan, Modak Bikash
doaj   +1 more source

Inverse problems for self-adjoint Dirac systems: explicit solutions and stability of the procedure [PDF]

open access: yes, 2015
A procedure to recover explicitly self-adjoint matrix Dirac systems on semi-axis (with both discrete and continuous components of spectrum) from rational Weyl functions is considered. Its stability is proved.
A. Sakhnovich
semanticscholar   +1 more source

Lyapunov stability solutions of fractional integrodifferential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 47, Page 2503-2507, 2004., 2004
Lyapunov stability and asymptotic stability conditions for the solutions of the fractional integrodiffrential equations x(α)(t)=f(t,x(t))+∫t0tk(t,s,x(s))ds, 0 < α ≤ 1, with the initial condition x(α−1)(t0) = x0, have been investigated. Our methods are applications of Gronwall′s lemma and Schwartz inequality.
Shaher Momani, Samir Hadid
wiley   +1 more source

Global periodic solutions in a plankton-fish interaction model with toxication delay

open access: yesNonlinear Engineering, 2018
In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
doaj   +1 more source

Home - About - Disclaimer - Privacy