Results 31 to 40 of about 5,077 (136)

Testing monotonicity via local least concave majorants

open access: yes, 2014
We propose a new testing procedure for detecting localized departures from monotonicity of a signal embedded in white noise. In fact, we perform simultaneously several tests that aim at detecting departures from concavity for the integrated signal over ...
Akakpo, Nathalie   +2 more
core   +1 more source

Majorization bounds for distribution functions

open access: yesStatistics & Probability Letters, 2012
Let $X$ be a random variable with distribution function $F,$ and $X_{1},X_{2},...,X_{n}$ are independent copies of $X.$ Consider the order statistics $X_{i:n},$ $i=1,2,...,n$ and denote $F_{i:n}(x)=P\{X_{i:n}\leq x\}.$ Using majorization theory we write upper and lower bounds for $F$ expressed in terms of mixtures of distribution functions of order ...
openaire   +3 more sources

Integral Majorization Theorem for Invex Functions [PDF]

open access: yesAbstract and Applied Analysis, 2014
We obtain some general inequalities and establish integral inequalities of the majorization type for invex functions. We give applications to relative invex functions.
Muhammad Adil Khan   +2 more
openaire   +4 more sources

Local convergence of Newton's method using Kantorovich convex majorants

open access: yesJournal of Numerical Analysis and Approximation Theory, 2010
We are concerned with the problem of approximating a solution of an operator equation using Newton's method. Recently in the elegant work by Ferreira and Svaiter [6] a semilocal convergence analysis was provided which makes clear the relationship of the
Ioannis K. Argyros
doaj   +2 more sources

Fejer means of rational Fourier – Chebyshev series and approximation of function |x|s

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2019
Approximation properties of Fejer means of Fourier series by Chebyshev – Markov system of algebraic fractions and approximation by Fejer means of function |x|s, 0 < s < 2, on the interval [−1,1], are studied.
Pavel G. Patseika, Yauheni A. Rouba
doaj   +1 more source

Gaussian Subordination for the Beurling-Selberg Extremal Problem [PDF]

open access: yes, 2011
We determine extremal entire functions for the problem of majorizing, minorizing, and approximating the Gaussian function $e^{-\pi\lambda x^2}$ by entire functions of exponential type.
Carneiro, Emanuel   +2 more
core  

Harmonic Majorization for Plurisubharmonic Functions.

open access: yesInterdisciplinary Information Sciences, 1995
Summary: A criterion is given for the existence of harmonic majorants for nonnegative plurisubharmonic functions on the generalized half-plane in \(\mathbb C^n\).
openaire   +2 more sources

Cognitive functioning in major depression – a summary [PDF]

open access: yesFrontiers in Human Neuroscience, 2009
The aim of the present paper is to summarize the research during the past decade regarding cognitive functioning in Major Depressive Disorder (MDD). Cognitive impairment in the acute phase of illness has been frequently reported. The findings are shown in different cognitive domains, such as executive functions, attention, memory and psychomotor speed.
Åsa Hammar, Åsa Hammar, Guro Årdal
openaire   +3 more sources

Method for finding majorant function estimates required to determine Picard’s successive approximations convergence domain

open access: yesMATEC Web of Conferences, 2018
This paper deals with convergence of Picard’s successive approximations, which give a solution for perturbed body motion differential equations system through constructing a majorizing linear differential equation.
Petelina Vera
doaj   +1 more source

Functional analysis of Leishmania major cyclophilin

open access: yesInternational Journal for Parasitology, 2008
A potent immunosuppressive drug cyclosporin A (CsA) is known to inhibit human cell infection by the pathogenic protozoan parasite Leishmania major both in vitro and in vivo. The proposed mechanism of action involves CsA binding to Leishmania major-expressed cyclophilin and subsequent down-regulation of signaling events necessary for establishing ...
Yurchenko, Vyacheslav   +3 more
openaire   +2 more sources

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