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Unsupervised damage detection for offshore jacket wind turbine foundations based on an autoencoder neural network
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-05-11)
Article
Open AccessStructural health monitoring for offshore wind turbine foundations is paramount to the further development of offshore fixed wind farms. At present time there are a limited number of foundation designs, the jacket type ... -
Persistence of periodic traveling waves and Abelian integrals
(2021-08)
Article
Open AccessIt is well known that the existence of traveling wave solutions (TWS) for many partial differential equations (PDE) is a consequence of the fact that an associated planar ordinary differential equation (ODE) has certain ... -
Multidimensional data statistical processing of magnetic flow leakage signals from a Colombian gas pipeline
(2020-12-15)
Article
Open AccessThe hydrocarbon industry in Colombia is one of the principal pillars for the Colombian economy, representing around 5% of its gross domestic product. Since petroleum reserves have decreased, gas becomes one main alternative ... -
Predictors of failure with high-flow nasal oxygen therapy in COVID-19 patients with acute respiratory failure: a multicenter observational study
(2021-03-05)
Article
Open AccessPurpose: We aimed to describe the use of high-flow nasal oxygen (HFNO) in patients with COVID-19 acute respiratory failure and factors associated with a shift to invasive mechanical ventilation. Methods: This is a ... -
On babuška's model for asymmetric hysteresis
(2021-04-01)
Article
Restricted access - publisher's policyHysteresis is a complex phenomenon that occurs in many areas of science and engineering. To model hysteresis, scientists combine first laws of physics with fictitious equations to obtain phenomenological models that aim ... -
A Hysteresis dynamic mathematical model approach to parametric estimation system
(Hindawi, 2021-02-14)
Article
Open AccessThe main contribution of this paper is the proposal of a recent hysteresis dynamic model which is successfully employed within a posited signal modulator. The modulation of signals is a commonly required stage in many ... -
Stability index of linear random dynamical systems
(2021)
Article
Open AccessGiven a homogeneous linear discrete or continuous dynamical system, its stability index is given by the dimension of the stable manifold of the zero solution. In particular, for the n dimensional case, the zero solution ... -
Wind turbine main bearing fault prognosis based solely on SCADA data
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-23)
Article
Open AccessAs stated by the European Academy of Wind Energy (EAWE), the wind industry has identified main bearing failures as a critical issue in terms of increasing wind turbine reliability and availability. This is owing to major ... -
Sensors for structural health monitoring and condition monitoring
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-02-24)
Article
Open Access -
Wind turbine fault detection using highly imbalanced real SCADA data
(2021-03-20)
Article
Open AccessWind power is cleaner and less expensive compared to other alternative sources, and it has therefore become one of the most important energy sources worldwide. However, challenges related to the operation and maintenance ... -
A deep learning approach for segmentation of red blood cell images and malaria detection
(2020-06-13)
Article
Open AccessMalaria is an endemic life-threating disease caused by the unicellular protozoan parasites of the genus Plasmodium. Confirming the presence of parasites early in all malaria cases ensures species-specific antimalarial ... -
Atypical lymphoid cells circulating in blood in COVID-19 infection: morphology, immunophenotype and prognosis value
(2020-01-01)
Article
Open AccessAims Atypical lymphocytes circulating in blood have been reported in COVID-19 patients. This study aims to (1) analyse if patients with reactive lymphocytes (COVID-19 RL) show clinical or biological characteristics related ...
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