Results 31 to 40 of about 867,256 (312)

A General Description of Growth Trends

open access: yesStats, 2022
Time series that display periodicity can be described with a Fourier expansion. In a similar vein, a recently developed formalism enables the description of growth patterns with the optimal number of parameters.
Moshe Elitzur
doaj   +1 more source

A SEIRD Model for Control of COVID-19: Case of Azerbaijan [PDF]

open access: yesSHS Web of Conferences, 2021
Research background: The study uses the key parameters of the spread of the epidemic, dividing the population into several groups S - susceptible, E - exposed, I - infectious, R - recovered, D - dead.
Aliyeva Tarana   +2 more
doaj   +1 more source

Exponential Growth of Solutions for Nonlinear Coupled Viscoelastic Wave Equations

open access: yesUniversal Journal of Mathematics and Applications, 2019
In this work, we consider an initial-boundary value problem related to the nonlinear coupled viscoelastic equations \[ \left\{ \begin{array}{c} \left\vert u_{t}\right\vert ^{j}u_{tt}-\Delta u_{tt}-div\left( \left\vert \nabla u\right\vert ^{\alpha -2 ...
Şeyhmus Altındağ, Erhan Pişkin
doaj   +1 more source

Trudinger–Moser Inequalities in Fractional Sobolev–Slobodeckij Spaces and Multiplicity of Weak Solutions to the Fractional-Laplacian Equation

open access: yesAdvanced Nonlinear Studies, 2019
In line with the Trudinger–Moser inequality in the fractional Sobolev–Slobodeckij space due to [S. Iula, A note on the Moser–Trudinger inequality in Sobolev–Slobodeckij spaces in dimension one, Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl.
Zhang Caifeng
doaj   +1 more source

Exponential energy growth in adiabatically changing Hamiltonian Systems [PDF]

open access: yes, 2014
Fermi acceleration is the process of energy transfer from massive objects in slow motion to light objects that move fast. The model for such process is a time-dependent Hamiltonian system.
Pereira, Tiago, Turaev, Dmitry
core   +2 more sources

Paradoxical Effects of Tumor Shrinkage on Long-Term Survival of Cancer Patients

open access: yesFrontiers in Applied Mathematics and Statistics, 2020
In this article, we challenge the existing paradigm that greater tumor shrinkage at the end of treatment leads to longer patient survival. In particular, we identify biological conditions under which the exact opposite is true.
Leonid Hanin
doaj   +1 more source

Nonautonomous fractional problems with exponential growth

open access: yes, 2014
We study a class of nonlinear non-autonomous nonlocal equations with subcritical and critical exponential nonlinearity.
Miyagaki, Olimpio H.   +2 more
core   +1 more source

On exponential growth and uniformly exponential growth for groups

open access: yesInventiones Mathematicae, 2004
The paper gives a negative answer to \textit{M. Gromov}'s question [Structures métriques pour les variétés riemanniennes. Textes Mathématiques, 1. Paris (1981; Zbl 0509.53034)], (Remark 5.2) posed in 1981. Gromov asked `if groups of exponential growth necessarily have uniform exponential growth'.
openaire   +2 more sources

Control and maintenance of mammalian cell size

open access: yesBMC Cell Biology, 2004
Background Conlon and Raff propose that mammalian cells grow linearly during the division cycle. According to Conlon and Raff, cells growing linearly do not need a size checkpoint to maintain a constant distribution of cell sizes.
Cooper Stephen
doaj   +1 more source

Jacobian algebras with periodic module category and exponential growth [PDF]

open access: yes, 2015
The Jacobian algebra associated to a triangulation of a closed surface $S$ with a collection of marked points $M$ is (weakly) symmetric and tame. We show that for these algebras the Auslander-Reiten translate acts 2-periodical on objects.
Valdivieso-Díaz, Yadira
core   +2 more sources

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