Results 101 to 110 of about 632,681 (338)

On the Approximation Process of Shifted-Knots Bivariate Stancu-Type Kantorovich Operators

open access: yesJournal of Mathematics
This paper focuses on defining bivariate Stancu-type Kantorovich operators with the technique associated with the idea of shifted knots. The degree of approximation and weighted approximation of these bivariate operators are estimated, respectively, by ...
Abdullah Alotaibi
doaj   +1 more source

Approximation on the sphere by weighted Fourier expansions

open access: yesJournal of Applied Mathematics, 2005
The main theme of this paper is the approximation on the sphere by weighted sums of spherical harmonics. We give necessary and sufficient conditions on the weights for convergence in both the continuous and the LP cases.
V. A. Menegatto, A. C. Piantella
doaj   +1 more source

On weighted polynomial approximation with monotone weights [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
We construct an even weight W W monotone on the right half line such that the logarithmic integral of the largest log \log -convex minorant of W W converges and the polynomials are dense in C ( W ) C(W) .
openaire   +2 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

open access: yesFEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li   +8 more
wiley   +1 more source

On the Degree of Best Approximation of Unbounded Functions by Algebraic Polynomial

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
  In this paper we introduce a new class of degree of best algebraic approximation polynomial Α,, for unbounded functions in weighted space Lp,α(X), 1 ∞ .We shall prove direct and converse theorems for best algebraic approximation in terms modulus ...
Alaa A. Auad
doaj  

Approximation of the Summation-Integral-Type q-Szász-Mirakjan Operators

open access: yesAbstract and Applied Analysis, 2012
We introduce summation-integral-type q-Szász-Mirakjan operators and study approximation properties of these operators. We establish local approximation theorem. We give weighted approximation theorem.
Mei-Ying Ren, Xiao-Ming Zeng
doaj   +1 more source

Efficient Estimation of the Parameter Path in Unstable Time Series Models [PDF]

open access: yes
The paper investigates asymptotically efficient inference in general likelihood models with time varying parameters. Parameter path estimators and tests of parameter constancy are evaluated by their weighted average risk and weighted average power ...
Mueller, Ulrich   +1 more
core   +1 more source

Global universal approximation of functional input maps on weighted spaces [PDF]

open access: green, 2023
Christa Cuchiero   +2 more
openalex   +1 more source

The cooperative regulation of miR‐221 by APE1 and AUF1 impacts p27Kip1 defining a miR signature relevant for cervical cancer

open access: yesFEBS Open Bio, EarlyView.
A regulatory axis involving APE1, AUF1, and miR‐221 is proposed. Pri‐miR‐221 is processed by DROSHA and DICER to generate mature miR‐221, which targets p27Kip1 mRNA. APE1 and AUF1 compete for pre‐miR‐221 binding. Reduced APE1/AUF1 levels impair miR‐221 biogenesis, decrease p27Kip1 mRNA degradation, and promote cell cycle progression, chemoresistance ...
Matilde Clarissa Malfatti   +3 more
wiley   +1 more source

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