Results 71 to 80 of about 28,422,071 (389)

Power spectrum analysis of staggered quadriphase-shift-keyed signals [PDF]

open access: yes, 1975
Mathematical analysis of power spectrum of outputs from high-reliability communication system is used to determine system bandwidth. Analysis provides mathematical relationships of signal power spectrum at output of hard limiter for any type of baseband ...
Cartier, D. E., Mcwhorter, F. L.
core   +1 more source

Power Spectrum Analysis of the Stromlo-APM Redshift Survey [PDF]

open access: yes, 1996
We test estimators of the galaxy power spectrum $P(k)$ against simulated galaxy catalogues constructed from N-body simulations and we derive formulae to correct for biases.
Efstathiou, G., Tadros, H.
core   +3 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Tsallis non-extensive statistics, intermittent turbulence, SOC and chaos in the solar plasma. Part one: Sunspot dynamics

open access: yes, 2012
In this study, the nonlinear analysis of the sunspot index is embedded in the non-extensive statistical theory of Tsallis. The triplet of Tsallis, as well as the correlation dimension and the Lyapunov exponent spectrum were estimated for the SVD ...
Abramenko   +115 more
core   +1 more source

Blind extraction of an exoplanetary spectrum through Independent Component Analysis [PDF]

open access: yes, 2013
Blind-source separation techniques are used to extract the transmission spectrum of the hot-Jupiter HD189733b recorded by the Hubble/NICMOS instrument. Such a 'blind' analysis of the data is based on the concept of independent component analysis.
Deroo, Pieter   +5 more
core   +1 more source

Gut microbiota in patients with Alzheimer’s disease spectrum: a systematic review and meta-analysis

open access: yesAging, 2022
Context: Gut dysbiosis has been proposed as one of pathologies in patients with Alzheimer’s disease (AD) spectrum. Despite such enthusiasm, the relevant results remain substantially controversial.
Chun-Che Hung   +4 more
semanticscholar   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Automatic Grouping in Singular Spectrum Analysis

open access: yesForecasting, 2019
Singular spectrum analysis (SSA) is a non-parametric forecasting and filtering method that has many applications in a variety of fields such as signal processing, economics and time series analysis.
M. Kalantari, Hossein Hassani
semanticscholar   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Autism spectrum traits in normal individuals : a preliminary VBM analysis [PDF]

open access: yes, 2015
In light of the new DSM-5 autism spectrum disorders diagnosis in which the autism spectrum reflects a group of neurodevelopmental disorders existing on a continuum from mild to severe expression of autistic traits, and recent empirical findings showing a
Focquaert, Farah, Vanneste, Sven
core   +3 more sources

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