Results 51 to 60 of about 489,037 (244)

UN ESQUEMA DE MODULACIÓN DE 4 ESTADOS EN 3 DIMENSIONES BASADO EN WAVELETS (4P-3D).

open access: yesRevista de Investigaciones Universidad del Quindío, 2014
En este artículo se propone un esquema de modulación digital denominado Modulación Particionada de 4 Estados en 3 Dimensiones (4P-3D). Dicho esquema divide el mensaje binario en bloques de 2 bits y representa cada bloque mediante un vector real de 3 ...
Jesús Mauricio Ramírez Viáfara   +1 more
doaj   +1 more source

Effective Wavelet Algorithm for an Automatic Detection of Atrial Fibrillation

open access: yesAdvances in Electrical and Computer Engineering, 2020
Cardiac anomalies are usually marked through irregular cardiac cycles. Atrial fibrillation is given through a rapid beating of the atria, announcing a possible heart failure or stroke. Electrocardiograms are an efficient way of supervising the electric
ARVINTI, B., ISAR, A., COSTACHE, M.
doaj   +1 more source

Experimental Analysis of Cooling Fan Noise by Wavelet-Based Beamforming and Proper Orthogonal Decomposition

open access: yesIEEE Access, 2020
We use the proper orthogonal decomposition (POD) method to decompose acoustic imaging from wavelet-based beamforming results into their corresponding modes, and demonstrate the method to analyze the noise characteristics of small-dimensional components ...
Sicong Liang   +3 more
doaj   +1 more source

Combining spectral and wavelet texture features for unmanned aerial vehicles remote estimation of rice leaf area index

open access: yesFrontiers in Plant Science, 2022
Estimating the crop leaf area index (LAI) accurately is very critical in agricultural remote sensing, especially in monitoring crop growth and yield prediction.
Cong Zhou   +11 more
doaj   +1 more source

Wavelet design by means of multi-objective GAs for motor imagery EEG analysis [PDF]

open access: yes, 2011
Wavelet-based analysis has been broadly used in the study of brain-computer interfaces (BCI), but in most cases these wavelet functions have not been designed taking into account the requirements of this field.
Asensio-Cubero, J   +3 more
core  

Un établissement rural gallo-romain à Gellainville " Le Radray " (Eure-et-Loir) (fin du Ier s. av. J.-C.-fin du IVe s. ap. J.-C.)

open access: yesRevue Archéologique du Centre de la France, 2011
: The site of "Radray" in the municipality of Gellainville (28) has been excavated in 2007. The article presents the main results of the Gallo-Roman part of the site. The occupation begins from the first half of the first century A.D.
Hervé Delhoofs   +3 more
doaj  

Adjustment and Assessment of the Measurements of Low and High Sampling Frequencies of GPS Real-Time Monitoring of Structural Movement

open access: yesISPRS International Journal of Geo-Information, 2016
Global Positioning System (GPS) structural health monitoring data collection is one of the important systems in structure movement monitoring. However, GPS measurement error and noise limit the application of such systems. Many attempts have been made to
Mosbeh R. Kaloop   +2 more
doaj   +1 more source

WSOM: Building Adaptive Wavelets with Self-organizing Maps [PDF]

open access: yes, 1997
The WSOM (Wavelet Self-Organizing Map) model, a neural network for the creation of wavelet bases adapted to the distribution of input data, is introduced.
Campos, Marcos, Carpenter, Gail
core   +1 more source

Wavelet transforms and their applications to MHD and plasma turbulence: a review

open access: yes, 2015
Wavelet analysis and compression tools are reviewed and different applications to study MHD and plasma turbulence are presented. We introduce the continuous and the orthogonal wavelet transform and detail several statistical diagnostics based on the ...
Farge, Marie, Schneider, Kai
core   +3 more sources

Beam-like damage detection methodology using wavelet damage ratio and additional roving mass

open access: yesFracture and Structural Integrity, 2022
Early damage detection plays an essential role in the safe and satisfactory maintenance of structures. This work investigates techniques that use only damaged structure responses.
Juliana C. Santos   +5 more
doaj   +1 more source

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