Results 21 to 30 of about 18,503 (265)

A Novel Method to Estimate the Damage Severity Using Spatial Wavelets and Local Regularity Algorithm

open access: yesFracture and Structural Integrity, 2020
In the process of structural damage detection using continuous wavelet transform (CWT), the perturbation or damage is located by identifying the defects locally in the input signal data.
Arun Kumar K, Mallikarjuna Reddy D
doaj   +3 more sources

State Identification of Transformer Under DC Bias Based on Wavelet Singular Entropy

open access: yesIEEE Access, 2021
To identify the DC bias state of transformers, a DC bias state identification method of transformer based on wavelet singular entropy is proposed in this paper. The vibration principle of transformers under DC bias has been analyzed.
Jun Liu   +7 more
doaj   +1 more source

Continuous and Discrete Wavelet Transforms Associated with Hermite Transform

open access: yesInternational Journal of Analysis and Applications, 2020
In this paper, we accomplished the concept of continuous and discrete Hermite wavelet transforms. We also discussed some basic properties of Hermite wavelet transform.
C. P. Pandey, Pranami Phukan
doaj  

Techniques for Accelerometer Reading Processing on Railway Transport Using Wavelet Transform

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника
Introduction. Safety issues of railway transport are inevitably connected with the condition of railway tracks and railway wheels. Various defects, such as irregularities of the railway track, may lead to emergencies and incidents.
A. M. Boronakhin   +4 more
doaj   +1 more source

Comparative Application of Time-Frequency Methods on Strong Motion Signals

open access: yesAdvances in Civil Engineering, 2021
Real-world physical signals are commonly nonstationary, and their frequency details change with time and do not remain constant. Fourier transform that uses infinite sine/cosine waves as basis functions represents frequency constituents of signals but ...
Mohammad Ashtari Jafari
doaj   +1 more source

Continuous and Discrete Wavelet Transforms [PDF]

open access: yesSIAM Review, 1989
This paper is an expository survey of results on integral representations and discrete sum expansions of functions in $L^2 ({\bf R})$ in terms of coherent states. Two types of coherent states are considered: Weyl–Heisenberg coherent states, which arise from translations and modulations of a single function, and affine coherent states, called ’wavelets,’
Christopher E. Heil, David F. Walnut
openaire   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

Discovery and Targeted Proteomic Studies Reveal Striatal Markers Validated for Huntington's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Clinical trials for Huntington's disease (HD) enrolling persons before clinical motor diagnosis (CMD) lack validated biomarkers. This study aimed to conduct an unbiased discovery analysis and a targeted examination of proteomic biomarkers scrutinized by clinical validation. Methods Cerebrospinal fluid was obtained from PREDICT‐HD and
Daniel Chelsky   +8 more
wiley   +1 more source

Continuous wavelet transform on the hyperboloid

open access: yesApplied and Computational Harmonic Analysis, 2007
The main advantages of the known continuous wavelet transforms (CWT) over the classical Fourier transform are its local and multiresolution nature, which provide the properties of a mathematical microscope. However, data analysis has undergone deep changes recently and the field faces new exciting challenges. A given feature shared by these problems is
Bogdanova, I.   +2 more
openaire   +3 more sources

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi   +2 more
wiley   +1 more source

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