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Spectral properties of chaotic signals with applications in communications
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
This paper investigates the characteristics of the Power Spectral Density (PSD) of chaotic signals generated by skew tent maps. The influence of the Lyapunov exponent on the autocorrelation sequence and on the PSD is ...
Postural control during kneeling
(SPRINGER, 2008)
Postural control was studied when the subject was kneeling with erect trunk in a quiet posture and compared to that obtained during quiet standing. The analysis was based on the center of pressure motion in the sagittal ...
Nonstationary multi-output gaussian processes via harmonizable spectral mixtures
(Universidad de Chile, 2021)
In several disciplines, Gaussian Processes (GPs)\cite{williams2006gaussian} are the gold standard for modelling time series or functions in general, especially in cases where modelling uncertainty is required. The extension ...
Sistema automático de detecção de falhas em rolamentos de roletes de correias transportadoras
(Universidade Federal de Minas GeraisUFMG, 2010-04-23)
The rollers are the main elements responsible for the movement of conveyor belts, and its integrity is fundamental to the appropriate operation of the conveyors. To increase the operational reliability and to reduce the ...
AFM analysis of bleaching effects on dental enamel microtopography
(ELSEVIER SCIENCE BV, 2010)
The purpose of this in vitro study was to test a new methodology to evaluate the effects of 35% hydrogen peroxide agent on the microtopography of sound enamel using an atomic force microscope (AFM). The buccal sound surfaces ...
Spectral analysis of ground penetrating radar signals in concrete, metallic and plastic targets
(ElsevierAmsterdam, 2014)
The accuracy of detecting buried targets using ground penetrating radar (GPR) depends mainly on features that
are extracted fromthe data. The objective of this study is to test three spectral features and evaluate the ...
Diseño de sólido resonador para partes del cuerpo (muslos) por medio de pruebas experimentales y elementos finitos
(IngenieriasIngeniería de SonidoMedellín, 2019)
In the present work, experimental tests were carried out on adults of different body types and gender, both male and female, to obtain the frequencies of less attenuation for the thighs; having as a result for the high ...
Diseño de sólido resonador para partes del cuerpo (muslos) por medio de pruebas experimentales y elementos finitos
(IngenieriasIngeniería de SonidoMedellín, 2019)
The effect of acoustic mode on time-resolved temperature measurements in a Rijke-tube pulse combustor
(Elsevier B.V., 2000-10-01)
Radial profiles are reported of average and rms temperature in a propane flame for the first, second, and third acoustic modes at four different axial positions above the burner in a Rijke-tube combustor. Selected plots ...
The effect of acoustic mode on time-resolved temperature measurements in a Rijke-tube pulse combustor
(Elsevier B.V., 2000-10-01)
Radial profiles are reported of average and rms temperature in a propane flame for the first, second, and third acoustic modes at four different axial positions above the burner in a Rijke-tube combustor. Selected plots ...