Results 91 to 100 of about 28,804 (256)

The Voronovskaja theorem for Bernstein-Schurer bivariate operators

Journal of Numerical Analysis and Approximation Theory, 2004
The Voronovskaja theorem for the Bernstein-Schurer bivariate operatos is established.
Dan Bărbosu
doaj   +2 more sources

On the Convergence of a Family of Chlodowsky Type Bernstein-Stancu-Schurer Operators

Journal of Function Spaces, 2018
We construct a new family of univariate Chlodowsky type Bernstein-Stancu-Schurer operators and bivariate tensor product form. We obtain the estimates of moments and central moments of these operators, obtain weighted approximation theorem, establish ...
Lian-Ta Shu, Guorong Zhou, Qing-Bo Cai
doaj   +1 more source

Neurodevelopmental features in KCNQ2 developmental and epileptic encephalopathy may have limited associations with KV7.2 dysfunction

Epilepsia Open, EarlyView.
Abstract Objective Variants in KCNQ2 encoding the voltage‐gated potassium channel KV7.2 are associated with developmental and epileptic encephalopathy (DEE) of varying severity. This study examined the relationship of KCNQ2 variant dysfunction with the neurodevelopmental phenotype of individuals with KCNQ2‐DEE. Methods A parent‐reported survey gathered
Jessa S. Bidwell, Carlos G. Vanoye, Reshma R. Desai, Anne T. Berg, Alfred L. George Jr   +4 more
wiley   +1 more source

Bivariate Bernstein–Schurer–Stancu type GBS operators in ( p , q ) $(p,q)$ -analogue

Advances in Difference Equations, 2020
The purpose of this paper is to construct a ( p , q ) $(p,q)$ -analogue of Bernstein–Schurer–Stancu type GBS (generalized Boolean sum) operators for approximating B-continuous and B-differentiable functions.
M. Mursaleen, Mohd. Ahasan, K. J. Ansari
doaj   +1 more source

Age‐Related Trends in Eating‐Pathology Symptoms Among Sexual Minority Adults

European Eating Disorders Review, EarlyView.
ABSTRACT Objective To examine how eating‐disorder symptoms vary by chronological age and sexual orientation in sexual minority adults. Method Cross‐sectional data came from 2062 cisgender sexual minority participants (925 gay men, 573 lesbian women, 116 bi+ men, 448 bi+ women; age = 47.8 years, range = 18–96).
Jason M. Nagata, Christopher D. Otmar, Char Potes, Ken Murakami, Jason M. Lavender, Emilio J. Compte, Tiffany A. Brown, Kelsie T. Forbush, Annesa Flentje, Micah E. Lubensky, Juno Obedin‐Maliver, Mitchell R. Lunn   +11 more
wiley   +1 more source

Waves of Uncertainty: Crude Oil Under Geopolitical, Economic, and ESG Turbulence

Energy Science &Engineering, EarlyView.
Dynamic copula and wavelet coherence reveal that geopolitical, economic, and sustainability uncertainties significantly shape crude oil price co‐movements. Long‐term coherence, especially post‐2015, highlights the growing role of ESG risks alongside geopolitical shocks and economic crises in global energy risk transmission.
Sana Braiek, Naif Alsagr, Aamir Aijaz Syed, Ahmed Jeribi   +3 more
wiley   +1 more source

An Integro-Differential Structure for Dirac Distributions

, 2018
We develop a new algebraic setting for treating piecewise functions and distributions together with suitable differential and Rota-Baxter structures. Our treatment aims to provide the algebraic underpinning for symbolic computation systems handling such ...
Rosenkranz, Markus, Serwa, Nitin
core  

Approximation by the bivariate complex Baskakov-Stancu operators

Communications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2014
In this paper we study the approximation properties of the Stancutype bivariate generalization of the complex Baskakov operators. We obtaina Voronovskaja type result with quantitative estimates for bivariate complexBaskakov-Stancu operators attached to analytic functions having suitable exponential growth on compact polydisks.
ISPİR, Nurhayat, MANAV, Nesibe
openaire   +2 more sources

When Are Statistical Forecast Gains Economically Relevant? Evidence From Bitcoin Returns

Journal of Forecasting, EarlyView.
ABSTRACT We study how statistical forecast gains for Bitcoin translate into trading profits. Using real‐time out‐of‐sample forecasts from daily bivariate VARs from October 2021 to February 2024, we show that Bitcoin returns are forecastable and that seven predictive indices yield significant gains in directional accuracy (DA).
Rehan Arain, Stephen Snudden
wiley   +1 more source

Approximation by bivariate Bernstein–Kantorovich–Stancu operators that reproduce exponential functions

Journal of Inequalities and Applications
In this study, we construct a Stancu-type generalization of bivariate Bernstein–Kantorovich operators that reproduce exponential functions. Then, we investigate some approximation results for these operators.
Lian-Ta Su, Kadir Kanat, Melek Sofyalioğlu Aksoy, Merve Kisakol   +3 more
doaj   +1 more source