Results 101 to 110 of about 1,637,948 (328)

Rate of convergence of Stancu beta operators for functions of bounded variation

open access: yesJournal of Numerical Analysis and Approximation Theory, 2004
In this paper we study beta operators of second kind recently introduced by Prof. D. D. Stancu. We obtain an estimate on the rate of convergence for functions of bounded variation by means of the decomposition technique.
Ulrich Abel, Vijay Gupta
doaj   +2 more sources

ON APPROXIMATION OF THE RATIONAL FUNCTIONS, WHOSE INTEGRAL IS SINGLE-VALUED ON C, BY DIFFERENCES OF SIMPLEST FRACTIONS

open access: yesПроблемы анализа, 2018
We study a uniform approximation by differences Θ1 - Θ2 of simplest fractions (s.f.’s), i. e., by logarithmic derivatives of rational functions on continua K of the class Ωr, r > 0 (i.
Komarov M . A .
doaj   +1 more source

Polarization of the electron and positron produced in combined Coulomb and strong laser fields

open access: yes, 2010
The process of $e^+e^-$ production in the superposition of a Coulomb and a strong laser field is considered. The pair production rate integrated over the momentum and summed over the spin projections of one of the particles is derived exactly in the ...
A. Di Piazza   +17 more
core   +1 more source

Time‐delay polynomial networks and rates of approximation [PDF]

open access: yesMathematical Problems in Engineering, 1997
We consider a large family of finite memory causal time‐invariant maps G from an input set S to a set of ℝ‐valued functions, with the members of both sets of functions defined on the nonnegative integers, and we give an upper bound on the error in approximating a G using a two‐stage structure consisting of a tapped delay line and a static polynomial ...
openaire   +2 more sources

Uniform decomposition of probability measures: quantization, clustering and rate of convergence

open access: yesJournal of Applied Probability, 2018
The study of finite approximations of probability measures has a long history. In Xu and Berger (2017), the authors focused on constrained finite approximations and, in particular, uniform ones in dimension d=1. In the present paper we give an elementary
Julien Chevallier
semanticscholar   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

CMS swaps in separable one-factor Gaussian LLM and HJM model [PDF]

open access: yes
An approximation approach to Constant Maturity Swaps (CMS) pricing in the separable one-factor Gaussian LLM and HJM models is presented. The approximation used is a Taylor expansion on the swap rate as a function of a random variable which is intuitively
Henrard, Marc
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

open access: yesFEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas   +3 more
wiley   +1 more source

Approximation on parametric extension of Baskakov–Durrmeyer operators on weighted spaces

open access: yesJournal of Inequalities and Applications, 2019
In the present manuscript, we define a non-negative parametric variant of Baskakov–Durrmeyer operators to study the convergence of Lebesgue measurable functions and introduce these as α-Baskakov–Durrmeyer operators.
Md Nasiruzzaman   +3 more
doaj   +1 more source

Sphaleron-Like Processes in a Realistic Heat Bath

open access: yes, 1993
We measure the diffusion rate of Chern-Simons number in the (1+1)-dimensional Abelian Higgs model interacting with a realistic heat bath for temperatures between 1/13 and 2/3 times the sphaleron energy. It is found that the measured rate is close to that
A. Krasnitz   +14 more
core   +1 more source

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