Results 141 to 150 of about 116,829 (327)

A Non‐Parametric Framework for Correlation Functions on Product Metric Spaces

open access: yesInternational Statistical Review, EarlyView.
Summary We propose a non‐parametric framework for analysing data defined over products of metric spaces, a versatile class encountered in various fields. This framework accommodates non‐stationarity and seasonality and is applicable to both local and global domains, such as the Earth's surface, as well as domains evolving over linear time or time ...
Pier Giovanni Bissiri   +3 more
wiley   +1 more source

Geodesics in Goedel-Synge spaces

open access: yes, 1982
Our purpose is to study the geodesic lines in the form: ds2=dx2 + 2h(x4)dx1dx2 + g(x4)dx22 – dx23 – dx24, and to compare with the work of S. Chandrasekhar and J. P. Wright on geodesics in Gödel’s universe. We will give, first, an isometric embedding of the form ds2=dx2 + 2h(x4)dx1dx2 + g(x4)dx22 – dx23 – dx24 in a pseudo Euclidean space of 10 ...
openaire   +2 more sources

Erythrocyte ‘Feierzeit’ reaction: Novel filamentous and vesicular response to n‐butyl acetate

open access: yesJournal of Microscopy, EarlyView.
Abstract Human erythrocytes (red blood cells; RBCs) undergo spontaneous disassembly after several hours of exposure to n‐butyl acetate (nBA). Images of the morphological changes were captured in time‐lapse sequences using differential interference contrast (DIC) light microscopy.
Philip W. Kuchel
wiley   +1 more source

Early sleep apnea treatment in stroke (eSATIS) – a multicentre, randomised controlled, rater‐blinded, clinical trial: The association of post‐stroke cognition with sleep‐disordered breathing and its treatment

open access: yesJournal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Sleep‐disordered breathing (SDB) is linked to cognitive dysfunction. Although SDB is common in stroke patients, the impact of SDB and its early treatment on cognitive functioning after stroke remains poorly investigated. Therefore, we explored the association between SDB and post‐stroke cognitive functioning, including the impact of early SDB ...
Irina Filchenko   +9 more
wiley   +1 more source

Recognizing Weighted Means in Geodesic Spaces

open access: yesFoundations of Computational Mathematics
Geodesic metric spaces support a variety of averaging constructions for given finite sets. Computing such averages has generated extensive interest in diverse disciplines. Here we consider the inverse problem of recognizing computationally whether or not a given point is such an average, exactly or approximately. In nonpositively curved spaces, several
Goodwin, Ariel   +3 more
openaire   +2 more sources

An Electroencephalographic Study of Sleep Spindle and Infraslow Oscillation in Children With Autism Spectrum Disorder

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT We investigated whether sleep microstructures show spatial differences in young children with autism compared with typically developing peers. 32‐channel electroencephalography (EEG) during natural sleep after 5–6 h of partial sleep deprivation was recorded from 53 children (26 with autism, 27 typically developing; 1.1–5.1 years).
Kevin Liu   +7 more
wiley   +1 more source

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