Results 51 to 60 of about 463,737 (318)

A Christoffel function weighted least squares algorithm for collocation approximations [PDF]

Mathematics of Computation, 2014
We propose, theoretically investigate, and numerically validate an algorithm for the Monte Carlo solution of least-squares polynomial approximation problems in a collocation frame- work.
A. Narayan, J. Jakeman, Tao Zhou
semanticscholar   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Uniform Consistency for Functional Conditional U-Statistics Using Delta-Sequences

Mathematics, 2022
U-statistics are a fundamental class of statistics derived from modeling quantities of interest characterized by responses from multiple subjects. U-statistics make generalizations the empirical mean of a random variable X to the sum of all k-tuples of X
Salim Bouzebda, Amel Nezzal, Tarek Zari
doaj   +1 more source

Orthogonal polynomials for modified weight functions

Journal of Computational and Applied Mathematics, 1992
In calculating \(I_ \Phi(f)\) numerically with a Gaussian quadrature formula, \[ I_ \Phi(f) \sim \sum^ n_{\nu=1}\lambda^{(\Phi)}_{\nu,n}f(x^{(\Phi)}_{\nu,n}), \] one needs the zeros \(x^{(\Phi)}_{\nu,n}\) of a polynomial \(P_ n(\Phi)\) which is orthogonal on \(I\) with respect to \(\Phi\) to all polynomials of degree less than \(n\). In this connection
openaire   +2 more sources

Orthogonal Decomposition in Omega-Weighted Classes of Functions Subharmonic in the Half-Plane [PDF]

Revista Colombiana de Matemáticas, 2018
El artículo da un análogo armónico ω-pesado en el semiplano del teorema de proyección de W. Wirtinger's (1 - r)α-pesada establecida por M. Djrbashian Tambié es hallada una descomposición ortogonal para algunas clases de funciones subarmónicas en el semiplano.
Jerbashian, Armen, Vargas, Daniel
openaire   +4 more sources

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Robust Cubature Kalman Filter for SINS/GPS Integrated Navigation Systems With Unknown Noise Statistics

IEEE Access, 2021
to the vehicle's severe maneuver and abnormal measurements of GPS in practical applications, the statistic of process noise in SINS/GPS integrated navigation system may be unknown and the measurement noise may not follow the Gaussian distribution, which ...
Kaiqiang Feng, Jie Li, Debiao Zhang, Xiaokai Wei, Jianping Yin   +4 more
doaj   +1 more source

Unitary designs and codes

, 2008
A unitary design is a collection of unitary matrices that approximate the entire unitary group, much like a spherical design approximates the entire unit sphere.
A. J. Scott, Aidan Roy, B. Collins, B. Collins, C. Bachoc, C. Bachoc, C. Bachoc, C.D. Godsil, C.D. Godsil, D. Bump, G. Benkart, H.F. Chau, J. Renes, J.R. Stembridge, L. Welch, M.R. Sepanski, P. Delsarte, P. Delsarte, P. Delsarte, P. Diaconis, P.D. Seymour, V. Levenshtein   +21 more
core   +1 more source

Monotonicity of zeros of polynomials orthogonal with respect to an even weight function [PDF]

Integral Transforms and Special Functions, 2014
The monotonicity properties of all the zeros with respect to a parameter of orthogonal polynomials associated with an even weight function are studied. The results we obtain extend the work of A. Markoff. The monotonicity of the zeros of Gegenbauer, Freud-type and symmetric Meixner–Pollaczek orthogonal polynomials as well as Al-Salam–Chihara q ...
Jordaan, Kerstin Heidrun, Wang, H., Zhou, J.   +2 more
openaire   +2 more sources

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source