Results 21 to 30 of about 1,719,198 (279)

Sentiment analysis of consumer reviews – a comparison of organic and regular food products usage [PDF]

open access: yesRajagiri Management Journal, 2020
Purpose – This study aims to compare online review characteristics, review length and review sentiment score between “organic” and “regular” food products.
B. Rajeswari   +3 more
doaj   +1 more source

Limit laws for random vectors with an extreme component [PDF]

open access: yes, 2007
Models based on assumptions of multivariate regular variation and hidden regular variation provide ways to describe a broad range of extremal dependence structures when marginal distributions are heavy tailed.
Heffernan, Janet E., Resnick, Sidney I.
core   +1 more source

A Note on Second Order Conditions in Extreme Value Theory: Linking General and Heavy Tail Conditions

open access: yesRevstat Statistical Journal, 2007
Second order conditions ruling the rate of convergence in any first order condition involving regular variation and assuring a unified extreme value limiting distribution function for the sequence of maximum values, linearly normalized, have appeared in
M. Isabel Fraga Alves   +3 more
doaj   +1 more source

Regularly varying probability densities [PDF]

open access: yes, 2006
The convolution of regularly varying probability densities is proved asymptotic to their sum, and hence is also regularly varying.
Bingham, N. H.   +2 more
core   +2 more sources

Classification of convergence rates of solutions of perturbed ordinary differential equations with regularly varying nonlinearity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we consider the rate of convergence of solutions of a scalar ordinary differential equation which is a perturbed version of an autonomous equation with a globally stable equilibrium.
John Appleby, Denis Patterson
doaj   +1 more source

Fluid queues and regular variation [PDF]

open access: yesPerformance Evaluation, 1996
Summary: This paper considers a fluid queueing system, fed by N independent sources that alternate between silence and activity periods. We assume that the distribution of the activity periods of one or more sources is a regularly varying function of index \(\zeta\) .
openaire   +5 more sources

On the asymptotic stability of a class of perturbed ordinary differential equations with weak asymptotic mean reversion

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper we consider the global and local stability and instability of solutions of a scalar nonlinear differential equation with non-negative solutions.
John Appleby, Jian Cheng
doaj   +1 more source

A note on asymptotics and nonoscillation of linear $q$-difference equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
We study the linear second order $q$-difference equation $y(q^2t)+a(t)y(qt)+b(t)y(t)=0$ on the $q$-uniform lattice $\{q^k:k\in\mathbb{N}_0\}$ with $q>1$, where $b(t)\ne0$. We establish various conditions guaranteeing the existence of solutions satisfying
Pavel Řehák
doaj   +1 more source

Asymptotic behavior of positive solutions of a semilinear Dirichlet problem in the annulus [PDF]

open access: yesOpuscula Mathematica, 2015
In this paper, we establish existence and asymptotic behavior of a positive classical solution to the following semilinear boundary value problem: \[-\Delta u=q(x)u^{\sigma }\;\text{in}\;\Omega,\quad u_{|\partial\Omega}=0.\] Here \(\Omega\) is an annulus
Safa Dridi, Bilel Khamessi
doaj   +1 more source

Regularized Mixed Variational‐Like Inequalities [PDF]

open access: yesJournal of Applied Mathematics, 2012
We use auxiliary principle technique coupled with iterative regularization method to suggest and analyze some new iterative methods for solving mixed variational‐like inequalities. The convergence analysis of these new iterative schemes is considered under some suitable conditions. Some special cases are also discussed.
Muhammad Aslam Noor   +3 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy