Results 121 to 130 of about 4,257 (300)

Weighted Deformed Gram Matrices for Quantum‐Inspired Learning With Applications to Biomedical Signal Analysis

Engineering Reports
This paper introduces a weighted (q,τ)‐deformed Gram matrix framework for quantum‐inspired learning systems, with particular emphasis on applications in biomedical signal analysis.
Rabha W. Ibrahim, Dumitru Baleanu, Soheil Salahshour   +2 more
doaj   +1 more source

On the positive definiteness of polyvibrating operators of Mangeron

, 1973
Depuis la publication de la thèse de M. D. Mangeron, nombre de travaux ont été dédiés à l'étude des équations polyvibrantes, appelées ensuite par différents hommes de sciences « équations de Mangeron ». Dans ce qui suit, l'auteur, tout en poursuivant ses
Sundaram Easwaran, Easwaran, Sundaram
core   +1 more source

Positive definiteness of real quadratic forms resulting from the variable-step approximation of convolution operators

, 2020
The positive definiteness of real quadratic forms with convolution structures plays an important role in stability analysis for time-stepping schemes for nonlocal operators.In this work, we present a novel analysis tool to handle discrete convolution ...
Zhou, Tao, Liao, Hong-lin, Tang, Tao
core   +1 more source

Use of Machine Learning to Identify Markers of Risk for Fragile X‐Associated Tremor/Ataxia Syndrome: A Preliminary Analysis

Annals of Neurology, EarlyView.
Objective The objective of this study was to examine whether machine learning has the capacity to prospectively identify and predict the emergence of Fragile X‐associated tremor/ataxia syndrome (FXTAS) among male fragile X premutation carriers (PCs). Methods We explored neuropsychological and motor evaluation metrics, brain magnetic resonance imaging ...
Chitrabhanu Gupta, Angeela Poudel, Jun Yi Wang, Randi Hagerman, Glenda Espinal, Jessica Famula, Andrea Schneider, Flora Tassone, Susan M. Rivera, Chen‐Nee Chuah, David Hessl   +10 more
wiley   +1 more source

The positive-definite completion problem

Transactions of the American Mathematical Society
We study the positive-definite completion problem for kernels on a variety of domains and prove results concerning the existence, uniqueness, and characterization of solutions. In particular, we study a special solution called the canonical completion which is the reproducing kernel analogue of the determinant-maximizing completion known to exist for ...
Waghmare, Kartik G., Panaretos, Victor M.   +1 more
openaire   +3 more sources

Pre‐Diagnostic Plasma Carotenoids, Tocopherols and Retinol Levels, and Risk of Amyotrophic Lateral Sclerosis

Annals of Neurology, EarlyView.
Objective Our goal was to examine whether pre‐diagnostic plasma carotenoids and tocopherols are associated with amyotrophic lateral sclerosis (ALS). Methods A nested case–control study within 4 United States cohorts, where 154 participants with pre‐diagnostic blood‐draw, were diagnosed during follow‐up with amyotrophic lateral sclerosis (ALS). Controls
Éilis J. O'Reilly, Kjetil Bjornevik, Jeremy D. Furtado, Alpa V. Patel, Ying Wang, Laurence N. Kolonel, Loïc Le Marchand, Alberto Ascherio   +7 more
wiley   +1 more source

The Dirichlet problem successive upper relaxation numerical method convergence relaxation parameters influence investigations

Karpatsʹkì Matematičnì Publìkacìï, 2012
The relaxation parameters values to definite sequential upper relaxation block method convergence optimal velocity have been determined for the Dirichlet's problem in two-dimensional rectangle spatial region, the iteration procedure convergence and ...
Oliynyk A.P., Shtayer L.O.
doaj  

Existence and uniqueness of the solution of the initialboundary value problem for one-dimensional equations of the dynamics of a compressible viscous mixture

Современная математика: Фундаментальные направления
In this paper, an initial-boundary value problem is studied for one-dimensional equations of the dynamics of a compressible viscous mixture. A theorem is proved for the existence and uniqueness of a solution to the initial-boundary value problem without ...
V. Yu. Nogovishcheva, D. A. Prokudin
doaj   +1 more source

Strictly Positive Definite Functions

Journal of Approximation Theory, 1996
A complex-valued continuous function defined on \(\mathbb{R}\) is said to be strictly positive definite on \(\mathbb{R}\) if the \(n\) by \(n\) matrix \((f(x_i- x_j))\) is positive definite for all choices of pairwise distinct points \(x_1,x_2,\dots,x_n\in\mathbb{R}\), and all \(n\geq 1\).
openaire   +1 more source

Idiopathic Intracranial Hypertension Is Characterized by a Distinct Proteomic Profile

Annals of Neurology, EarlyView.
Objectives The pathophysiology of idiopathic intracranial hypertension (IIH) is poorly understood and disease‐specific biomarkers are lacking. We aimed to shed light on IIH pathophysiology and identify disease‐specific biomarkers. Methods This prospective cross‐sectional cohort study included patients with new‐onset IIH and age‐, body mass index‐, and ...
Santosh D. Bhosale, Arkadiusz Nawrocki, Johanne J. Korsbæk, Nadja S. Hansen, Fabian Foettinger, Nik Krajnc, Mathias J. Norvig, Niclas L. Eriksen, Stefan Macher, Berthold Pemp, Connar S.J. Westgate, Christian B. Pedersen, Frantz R. Poulsen, Sune Munthe, Gabriel Bsteh, Martin R. Larsen, Rigmor H. Jensen, Dagmar Beier   +17 more
wiley   +1 more source