Results 81 to 90 of about 447,860 (319)

On the temporal variability of the surface solar radiation by means of spectral representations [PDF]

open access: yesAdvances in Science and Research, 2016
This work deals with the temporal variability of daily means of the global broadband surface solar irradiance (SSI) impinging on a horizontal plane by studying a decennial time-series of high-quality measurements recorded at a BSRN ground station.
M. Bengulescu, P. Blanc, L. Wald
doaj   +1 more source

On the spectral flow for paths of essentially hyperbolic bounded operators on Banach spaces

open access: yes, 2010
We give a definition of the spectral flow for paths of bounded essentially hyperbolic operators on a Banach space. The spectral flow induces a group homomorphism on the fundamental group of every connected component of the space of essentially hyperbolic
Daniele, Garrisi
core   +1 more source

The Prevalence of Eating Disorders and Disordered Eating in Adults Seeking Obesity Treatment: A Systematic Review With Meta‐Analyses

open access: yesInternational Journal of Eating Disorders, EarlyView.
ABSTRACT Objective To estimate the prevalence of eating disorders and disordered eating in adults seeking obesity treatment. Method Databases, MEDLINE, Embase, and PsycINFO, were searched to 20th March 2025. Studies reporting the prevalence of eating disorders or disordered eating at presentation to obesity treatment in adults (≥ 18 years) with ...
Hannah Melville   +8 more
wiley   +1 more source

MATHEMATICAL MODELING OF THE SPECTRAL REPRESENTATION FOR EVOLUTION OPERATORS AND INTERNAL TIME IN THE THEORY OF DURABILITY OF SYSTEMS WITH LONG PERIODS OF ACTIVE EXISTENCE

open access: yesНадежность и качество сложных систем, 2022
Background. Modern and designed complex, highly dangerous and critical systems today should fulfill their functionality for 30–50 years or more (nuclear power, cosmonautics, transport systems, including oil and gas trunk pipelines.
V.A. Ostreykovskiy, A.V. Sorochkin
doaj   +1 more source

Remarks on the Crouzeix-Palencia proof that the numerical range is a $(1+\sqrt2)$-spectral set

open access: yes, 2018
Crouzeix and Palencia recently showed that the numerical range of a Hilbert-space operator is a $(1+\sqrt2)$-spectral set for the operator. One of the principal ingredients of their proof can be formulated as an abstract functional-analysis lemma.
Ransford, Thomas, Schwenninger, Felix
core   +1 more source

Fifty Years of Eating Disorder Research: Growth, Gaps, and Global Challenges

open access: yesInternational Journal of Eating Disorders, EarlyView.
ABSTRACT The bibliometric study by Lee and Chi presents the most comprehensive analysis of eating disorder (ED) research publications to date, tracing publication trends, thematic developments, and the interplay between academic and public attention over the past five decades. The findings reveal a marked and sustained growth in ED‐related publications
Anja Hilbert
wiley   +1 more source

Statistical Analysis of Field-Aligned Alfvénic Turbulence and Intermittency in Fast Solar Wind

open access: yesUniverse, 2020
The statistical properties of fast Alfvénic solar wind turbulence have been analyzed by means of empirical mode decomposition and the associated Hilbert spectral analysis.
Francesco Carbone   +6 more
doaj   +1 more source

Parasitic Events in Envelope Analysis

open access: yesActa Polytechnica, 2001
Envelope analysis allows fast fault location of individual gearboxes and parts of bearings by repetition frequency determination of the mechanical catch of an amplitude-modulated signal.
J. Doubek, M. Kreidl
doaj  

How hard is the euro area core? A wavelet analysis of growth cycles in Germany, France and Italy [PDF]

open access: yes, 2006
Using recent advances in time-varying spectral methods, this research analyses the growth cycles of the core of the euro area in terms of frequency content and phasing of cycles.
Crowley, P. M.   +2 more
core  

Food Addiction in Individuals With Overweight and Obesity Undergoing a 12‐Week Long Tailored mHealth Weight Loss Intervention

open access: yesEuropean Eating Disorders Review, EarlyView.
ABSTRACT Objective Former studies indicated worse outcome for individuals with food addiction (FA) when participating in weight loss programs. Yet, the results may have been influenced by comorbid eating disorders and insufficient consideration of psychological aspects associated with FA.
Magdalena Pape   +6 more
wiley   +1 more source

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