Maintenance management of wind turbines structures via mfcs and wavelet transforms

RR de la Hermosa González, FPG Márquez… - … and Sustainable Energy …, 2015 - Elsevier
This paper introduces a novel Fault Detection and Diagnosis method based on the wavelet
transform to detect defects on the tower of a wind turbine. 24 Macro-Fiber Composite …

Non-stationary subdivision schemes: State of the art and perspectives

C Conti, N Dyn - Approximation Theory XVI: Nashville, TN, USA, May 19 …, 2021 - Springer
This paper reviews the state of the art of non-stationary subdivision schemes, which are
iterative procedures for generating smooth objects from discrete data, by repeated level …

Regularity of non-stationary subdivision: a matrix approach

M Charina, C Conti, N Guglielmi, V Protasov - Numerische mathematik, 2017 - Springer
In this paper, we study scalar multivariate non-stationary subdivision schemes with integer
dilation matrix M and present a unifying, general approach for checking their convergence …

Non-stationary versions of fixed-point theory, with applications to fractals and subdivision

D Levin, N Dyn, V Puthan Veedu - Journal of Fixed Point Theory and …, 2019 - Springer
Abstract Iterated Function Systems (IFSs) have been at the heart of fractal geometry almost
from its origin, and several generalizations for the notion of IFS have been suggested …

Attractors of trees of maps and of sequences of maps between spaces with applications to subdivision

N Dyn, D Levin, P Massopust - Journal of Fixed Point Theory and …, 2020 - Springer
An extension of the Banach fixed-point theorem for a sequence of maps on a complete
metric space (X, d) has been presented in a previous paper. It has been shown that …

Level-dependent interpolatory Hermite subdivision schemes and wavelets

M Cotronei, C Moosmüller, T Sauer… - Constructive …, 2019 - Springer
We study many properties of level-dependent Hermite subdivision, focusing on schemes
preserving polynomial and exponential data. We specifically consider interpolatory …

Effect of the seasonal freeze–thaw cycle of the active layer on the seismic response of the free field in the permafrost region

J Guan, X Zhang, X Chen, M Zhang, M Ding - Soil Dynamics and …, 2023 - Elsevier
Seasonal freezing and thawing of the active layer in permafrost can significantly alter the
seismic response of the free field. In this study, a specific laminar shear model box with a soil …

Sound and vibration-based pattern recognition for wind turbines driving mechanisms

RR de la Hermosa González - Renewable Energy, 2017 - Elsevier
This paper proposes a pattern recognition approach for a Fault Detection and Diagnosis
(FDD) system based on the wavelet and the fast Fourier transform. Both techniques are …

An efficient computational approach for computing subdivision depth of non-stationary binary subdivision schemes

SA Abdul Karim, F Khan, G Mustafa, A Shahzad… - Mathematics, 2023 - mdpi.com
Subdivision schemes are equipped with some rules that take a polygon as an input and
produce smooth curves or surfaces as an output. This presents the issue of how accurately …

Convergence and normal continuity analysis of nonstationary subdivision schemes near extraordinary vertices and faces

C Conti, M Donatelli, L Romani, P Novara - Constructive Approximation, 2019 - Springer
Convergence and normal continuity analysis of a bivariate nonstationary (level-dependent)
subdivision scheme for 2-manifold meshes with arbitrary topology is still an open issue …