Results 111 to 120 of about 57,073,214 (327)

Sex‐Stratified Association of Regional Dopamine Transporter Binding With Disease Progression in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the clinical relevance of dopamine transporter single‐photon emission computed tomography (DAT‐SPECT) abnormalities in amyotrophic lateral sclerosis (ALS), with a prespecified focus on sex‐stratified associations with disease progression and short‐term prognosis.
Tomoya Kawazoe, Keizo Sugaya, Kentaro Hayashi, Keiko Hino, Yasuhiro Nakata, Kota Bokuda, Toshio Shimizu, Kazushi Takahashi   +7 more
wiley   +1 more source

Best Rational Approximation to Markov Functions

Journal of Approximation Theory, 1994
The main result of this paper concerns rational approximations of Markov- Stieltjes functions in the dual spaces \(L^ p/H^ p\), \(1\leq p\leq\infty\), on the unit circle of the complex plane. For fixed \(n\) this paper considers approximation by rationals whose denominators have \(n\) different zeros all with double multiplicity.
openaire   +2 more sources

Best Approximation Of Bounded Functions By Continuous Functions

, 2015
[No abstract available]412135148Amir, Chebyshev centers and uniform convexity (1978) Pacific Journal of Mathematics, 77, pp. 1-6Amir, Deutsch, Approximation by certain subspaces in the Banach space of continuous vector-valued functions (1979) J.
Roversi M.S.M., ROVERSI, MSM
core   +1 more source

Direct and converse results for the weighted rational approximation of functions with inner singularities [PDF]

, 2004
The weighted rational approximation of functions with inner singularities of algebraic type in [-1,1] is investigated.
Della Vecchia, B., DELLA VECCHIA, Biancamaria   +1 more
core   +1 more source

Uncovering G Protein‐Coupled Receptors: Novel Targets and Biomarkers for Predicting Glioma Prognosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Low‐grade gliomas (LGG) exhibit significant heterogeneity and recurrence risk. G protein‐coupled receptors (GPCR) contribute to glioma malignant progression, but their prognostic value remains unclear. This work attempts to formulate a GPCR‐based outcome‐predicting model for LGG. Methods Based on TCGA LGG data, the enrichment scores
Jun Yang, Dongxu Zhang, Dongyuan Liu, Da Lin, Hao Wang   +4 more
wiley   +1 more source

Investigations of Nonlinear Triopoly Models with Different Mechanisms

Complexity, 2019
This paper studies the dynamic characteristics of triopoly models that are constructed based on a 3-dimensional Cobb–Douglas utility function. The paper presents two parts. The first part introduces a competition among three rational firms on which their
S. S. Askar, A. Al-khedhairi
doaj   +1 more source

Subclinical Optic Nerve Involvement in Radiologically Isolated Syndrome: Multimodal Detection and Diagnostic Impact

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives We aimed to determine the frequency of subclinical optic nerve (ON) lesions using MRI, optical coherence tomography (OCT), and visual evoked potentials (VEP) in radiologically isolated syndrome (RIS), and to assess their diagnostic and prognostic significance.
Christine Lebrun‐Frenay, Cassandre Landes‐Château, Lydiane Mondot, Mikael Cohen, Margherita Popolo, Jérôme de Seze, Bertrand Bourre, Françoise Durand‐Dubief, Olivier Casez, Orhun H. Kantarci, Aksel Siva, Stephanie Baillif, Darin T. Okuda, Letizia Leocani   +13 more
wiley   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source

Generalized Rational B-Spline Bases via Homographic Parametrization and Applications

International Journal of Mathematics and Mathematical Sciences
A new class of rational parametrization has been developed and was used to generate a new family of rational B-splines,  αGiki=0k, which depend on a parameter α∈−∞,0∪1,+∞.
Mohamed Allaoui, Jamal Adetola, Koffi Wilfrid Houédanou, Aurélien Goudjo   +3 more
doaj   +1 more source

Time-Domain Fractional Behaviour Modelling with Rational Non-Singular Kernels

Axioms
This paper proposes a solution to model fractional behaviours with a convolution model involving non-singular kernels and without using fractional calculus. The non-singular kernels considered are rational functions of time. The interest of this class of
Jocelyn Sabatier, Christophe Farges
doaj   +1 more source