Results 91 to 100 of about 268,187 (266)
Non-autonomous approximations governed by the fractional powers of damped wave operators
Electronic Journal of Differential Equations, 2019 In this article we study non-autonomous approximations governed by the fractional powers of damped wave operators of order $\alpha \in (0,1)$ subject to Dirichlet boundary conditions in an $n$-dimensional bounded domain with smooth boundary.
Marcelo J. D. Nascimento +1 more
doaj
A Note on the Rate of Convergence of the Bootstrap
Journal of Approximation Theory, 1993 Suppose \((X_ i)_{i\in\mathbb{N}}\) is an i.i.d. sequence of random variables defined on some probability space \((\Omega,{\mathcal A},\mathbb{P})\) with distribution function (d.f.) \(F\), \(F_{\eta_ n}\) denotes the d.f. of the standardized sample mean \(\eta_ n=\Bigl(\sum^ n_{i=1} X_ i- \mu_ n\Bigr)/(\sigma n^{1/2})\), \(\mu=\mathbb{E}(X_ 1)\) the ...
openaire +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi +2 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng +4 more
wiley +1 more source
High order approximation theory for Banach space valued functions
Journal of Numerical Analysis and Approximation Theory, 2017 Here we study quantitatively the high degree of approximation of sequences of linear operators acting on Banach space valued di§erentiable functions to the unit operator. These operators are bounded by real positive linear companion operators.
George A. Anastassiou
doaj
Robust Switching Surfaces Sliding Mode Guidance for Terminal Rendezvous in Near Circular Orbit [PDF]
فصلنامه علوم و فناوری فضایی, 2018 The present study aims to present a safe, robust and fast orbital rendezvous guidance. The scheme improves the rate of convergence to equal point until the chaser spacecraft reaches the proximity target. Then, the robust guidance structure is transformed
seyed aliakbar kasaeian, Masoud Ebrahimi
doaj
Impact of Plasma p‐tau181 on Cognition, Motor Phenotypes, and Disease Course in ALS
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Phosphorylated tau181 (p‐tau181), an Alzheimer's disease biomarker, was recently evaluated in amyotrophic lateral sclerosis (ALS). We investigated plasma p‐tau181 in 202 ALS/ALS‐FTD patients and 94 healthy controls, assessing cognitive performance, motor function, and longitudinal dynamics.
Elisabeth Kasper +25 more
wiley +1 more source
White Matter Microstructural Abnormalities in Neonatal Onset Genetic Epilepsy
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Recent evidence indicates that epilepsy is associated with abnormal white matter. If seizures alter white matter, then the impact upon network function, epileptogenesis, and cognition could be pronounced in neonates undergoing rapid developmental myelination. Neonates with epilepsy due to nonstructural genetic causes provide a unique
Amanda G. Sandoval Karamian +8 more
wiley +1 more source
On the Rate of Convergence in the Multivariate CLT
The Annals of Probability, 1991 Berry-Esseen theorems are proved in the multidimensional central limit theorem without using Fourier methods. An effective and simple estimate of the error in the CLT for sums and convex sets using Stein's method and induction is derived. Furthermore, the error in the CLT for multivariate functions of independent random elements is estimated ...
openaire +2 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Down syndrome regression disorder is a syndrome characterized by subacute loss of cognitive, behavioral, and functional abilities in individuals with Down syndrome. Electroencephalography abnormalities are frequently observed during evaluation, but it remains unclear whether these findings represent a dynamic marker of disease ...
Jonathan D. Santoro +14 more
wiley +1 more source