Results 21 to 30 of about 2,918,775 (291)
A SARS-CoV-2 Fractional-Order Mathematical Model via the Modified Euler Method
Mathematical and Computational Applications, 2022 This article develops a within-host viral kinetics model of SARS-CoV-2 under the Caputo fractional-order operator. We prove the results of the solution’s existence and uniqueness by using the Banach mapping contraction principle.
Ihtisham Ul Haq +3 more
doaj +1 more source
The Dynamics of An Eco-Epidemiological System Involving a Prey Refuge [PDF]
Engineering and Technology Journal, 2015 In this research a predator–prey model involving disease in a prey and prey refuge has been proposed and analyzed. It is assumed that only the prey species is divided into two classes infected and susceptible and disease transmitted by contact between a ...
Raid K. Naji +2 more
doaj +1 more source
Stability properties of a Cournot-type oligopoly model with time delay
Annals of the West University of Timisoara: Mathematics and Computer Science, 2023 The paper studies a Cournot game involving n private firms, where the firms’ interactions are analyzed in a discrete-time setting with time delay. The past production levels of other private firms have an impact on the production levels of each private ...
Culda Loredana Camelia
doaj +1 more source
On the local stability of semidefinite relaxations
, 2020 We consider a parametric family of quadratically constrained quadratic programs (QCQP) and their associated semidefinite programming (SDP) relaxations. Given a nominal value of the parameter at which the SDP relaxation is exact, we study conditions (and ...
Agarwal, Sameer +3 more
core +1 more source
Dynamic and Thermodynamic Properties of a CA Engine with Non-Instantaneous Adiabats
Entropy, 2017 This paper presents an analysis of a Curzon and Alhborn thermal engine model where both internal irreversibilities and non-instantaneous adiabatic branches are considered, operating with maximum ecological function and maximum power output regimes.
Ricardo T. Paéz-Hernández +3 more
doaj +1 more source
Relative Stability and Local Curvature Analysis in Carbon Nanotori [PDF]
, 2015 We introduce a concise formalism to characterize nanometer-sized tori based on carbon nanotubes and to determine their stability by combining {\em ab initio} density functional calculations with a continuum elasticity theory approach that requires only ...
Chuang, Chern +5 more
core +2 more sources
Stability of localized operators
Journal of Functional Analysis, 2009 Let $\ell^p, 1\le p\le \infty$, be the space of all $p$-summable sequences and $C_a$ be the convolution operator associated with a summable sequence $a$. It is known that the $\ell^p$- stability of the convolution operator $C_a$ for different $1\le p\le \infty$ are equivalent to each other, i.e., if $C_a$ has $\ell^p$-stability for some $1\le p\le ...
Shin, Chang Eon, Sun, Qiyu
openaire +3 more sources
Applied Mechanics, 2022 The stability of the slurry trench is very important in the construction of the underground diaphragm wall. In the current research, the local instability of the slurry trench is mainly investigated after the excavation of a unit slot is completely ...
Yuhang Liu +3 more
doaj +1 more source
Local immunodeficiency: Minimal networks and stability [PDF]
Mathematical Biosciences, 2019 Some basic aspects of the recently discovered phenomenon of local immunodeficiency \cite{pnas} generated by antigenic cooperation in cross-immunoreactivity (CR) networks are investigated. We prove that local immunodeficiency (LI) that's stable under perturbations already occurs in very small networks and under general conditions on their parameters ...
Bunimovich, Leonid, Shu, Longmei
openaire +4 more sources
Stability Analysis of Caputo Fractional Order Viral Dynamics of Hepatitis B Cellular Infection
Mathematical and Computational Applications, 2023 We present a Caputo fractional order mathematical model that describes the cellular infection of the Hepatitis B virus and the immune response of the body with Holling type II functional response.
Michael O. Opoku +5 more
doaj +1 more source