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Arnold diffusion in a model of dissipative system
(2023-09-30)
Article
Restricted access - publisher's policyFor a mechanical system consisting of a rotator and a pendulum coupled via a small, time-periodic Hamiltonian perturbation, the Arnold diffusion problem asserts the existence of “diffusing orbits” along which the energy ... -
A Finite-time control design for the discrete-time chaotic logistic equations
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-08)
Article
Open AccessFinite-time control theory has been widely used as a mathematical tool to design robust controllers. By manipulating the finite-time convergence proof of this theory, we developed a new control design appropriately tuned ... -
Real-time detection and correction of abnormal errors in GNSS observations on smartphones
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-08-23)
Article
Open AccessSmartphones, due to the integration of low-cost GNSS chips and linearly polarized antennas, frequently experience abnormal errors in their observations, particularly during positioning on water surfaces. In response to ... -
A second gradient theory of thermoviscoelasticity
(2024-09)
Article
Restricted access - publisher's policyThis paper is concerned with a rate-type theory of thermoviscoelasticity in which the second gradient of the displacement and the second temperature gradient are added to the classical set of independent constitutive ... -
Wind turbine gearbox condition monitoring through the sequential analysis of industrial SCADA and vibration data
(Elsevier, 2024-12-02)
Article
Open AccessThe operation & maintenance expenditure for a wind farm project can reach the impressive share of 30% of the total costs. This matter of fact motivates the need for optimal operation & maintenance, which is estimated to ... -
Incremental minimum distortion embedding for online structural damage classification
(2024-07)
Article
Open AccessThe damage detection problem in structures diminishes the maintenance cost and extends the life of the structures. Online structural damage classification is a relevant topic in structural health monitoring since monitoring ... -
Detection of crack bar deterioration at offshore wind turbine supports using generative adversarial networks and autoencoders
(Institute of Physics (IOP), 2024-06-01)
Article
Open AccessThis work focuses on the structural health monitoring of jacket-type foundations used by offshore wind turbines. A vibration-only response mechanism based on accelerometer data is specifically suggested. This work, based ... -
A review of prognostics and health management in wind turbine components
(2024-06-27)
Article
Open AccessWind turbines (WTs) play an essential role in renewable energy generation, and ensuring their reliable operation is essential for sustainable energy production and reduction of levelized cost of energy. In this context, ... -
Relations between Newtonian and relativistic cosmology
(Multidisciplinary Digital Publishing Institute (MDPI), 2024-06)
Article
Open AccessWe start with the cosmic Friedmann equations, where we adopt a novel perspective rooted in a Lagrangian formulation, grounded in Newtonian mechanics and the first law of thermodynamics. Our investigation operates under the ... -
Asymptotic spatial behaviour in linearised thermoelasticity for non-compact regions
(Elsevier, 2024-11)
Article
Open AccessA quasi-static approximation is studied of linearised nonhomogeneous anisotropic compressible thermoelasticity on a non-compact region. Differential inequalities are constructed which under appropriate conditions lead to ... -
A deep learning approach for automatic recognition of abnormalities in the cytoplasm of neutrophils
(Elsevier, 2024-06)
Article
Open AccessBackground and objectives: This study aims to develop and evaluate NeuNN, a system based on convolutional neural networks (CNN) and generative adversarial networks (GAN) for the automatic identification of normal neutrophils ... -
Sensitivity analysis and calibration for a two-dimensional state-space model of metal hydride storage tanks based on experimental data
(Elsevier, 2024-06-12)
Article
Open AccessIn this paper, a state-space model of a metal hydride tank is formulated and analyzed in detail. Firstly, a three-dimensional state-space model of the metal hydride tank is simplified by assuming that the tank temperature ...
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