Results 41 to 50 of about 4,491,688 (341)

Spectrum Analysis of Signal in Wolfram Mathematica System

open access: yesНаука и техника, 2021
The purpose of this paper is a spectrum analysis of signals of various nature, construction of the signal scalogram using Morlet wavelet, modification of the scalogram to obtain a more informative graphic representation of the signal.
M. A. Hundzina
doaj   +1 more source

Asymptotic analysis and spectrum of three anyons

open access: yes, 1993
The spectrum of anyons confined in harmonic oscillator potential shows both linear and nonlinear dependence on the statistical parameter. While the existence of exact linear solutions have been shown analytically, the nonlinear dependence has been ...
Date, G., Krishna, M., Murthy, M. V. N.
core   +1 more source

Redshift-space Distortions of the Power Spectrum of Cosmological Objects on a Light Cone : Explicit Formulations and Theoretical Implications [PDF]

open access: yes, 1999
We examine the effects of the linear and the cosmological redshift-space distortions on the power spectrum of cosmological objects on a light cone. We develop theoretical formulae for the power spectrum in linear theory of density perturbations in a ...
Ballinger W. E.   +9 more
core   +3 more sources

Stability of formoterol concentration in scalp hair of patients using maintenance formoterol therapy for asthma or COPD (INCTFISH)

open access: yesFrontiers in Pharmacology
IntroductionHair testing provides a non-invasive, objective method with a long (retrospective) surveillance window for assessing medication adherence.
E. Sportel   +12 more
doaj   +1 more source

Design Spectrum Analysis in NASTRAN [PDF]

open access: yes, 1984
The utility of Design Spectrum Analysis is to give a mode by mode characterization of the behavior of a design under a given loading. The theory of design spectrum is discussed after operations are explained.
Butler, T. G.
core   +1 more source

Power Spectrum Analysis of the OMC1 Image at 1.1 mm Wavelength [PDF]

open access: yes, 2012
We present a 1.1mm emission map of the OMC1 region observed with AzTEC, a new large-format array composed of 144 silicon-nitride micromesh bolometers, that was in use at the James Clerk Maxwell Telescope (JCMT).
Kim, Sungeun, Youn, Soyoung
core   +1 more source

Characterizing Parental Concerns About Lasting Impacts of Treatment in Children With B‐Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background B‐acute lymphoblastic leukemia (B‐ALL) is the most common pediatric cancer, and while most children in high‐resource settings are cured, therapy carries risks for long‐term toxicities. Understanding parents’ concerns about these late effects is essential to guide anticipatory support and inform evolving therapeutic approaches ...
Kellee N. Parker   +7 more
wiley   +1 more source

Shaped extensions of singular spectrum analysis [PDF]

open access: yes, 2014
Extensions of singular spectrum analysis (SSA) for processing of non-rectangular images and time series with gaps are considered. A circular version is suggested, which allows application of the method to the data given on a circle or on a cylinder, e.g.
Golyandina, Nina, Shlemov, Alex
core  

Evolution of density perturbations in decaying vacuum cosmology: The case of non-zero perturbations in the cosmological term [PDF]

open access: yes, 2008
We extend the results of a previous paper where a model of interacting dark energy, with a cosmological term decaying linearly with the Hubble parameter, is tested against the observed mass power spectrum.
A. G. Sánchez   +6 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

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