Results 1 to 10 of about 5,191,717 (281)

A method to correct for the effect of blockage and wakes on power performance measurements [PDF]

open access: yesWind Energy Science, 2023
Wind turbine power performance measurements often occur at the perimeter of a wind farm, where the wind flow is subject to blockage effects, which might impact the measured power performance.
A. Sebastiani, J. Bleeg, A. Peña
doaj   +1 more source

Quantum Entropies and Decoherence for the Multiparticle Quantum Arnol’d Cat

open access: yesEntropy, 2023
I study the scaling behavior in the physical parameters of dynamical entropies, classical and quantum, in a specifically devised model of collision-induced decoherence in a chaotic system.
Giorgio Mantica
doaj   +1 more source

Output-Based Dynamic Periodic Event-Triggered Control with Application to the Tunnel Diode System

open access: yesJournal of Sensor and Actuator Networks, 2023
The integration of communication channels with the feedback loop in a networked control system (NCS) is attractive for many applications. A major challenge in the NCS is to reduce transmissions over the network between the sensors, the controller, and ...
Mahmoud Abdelrahim, Dhafer Almakhles
doaj   +1 more source

Identification of Vibration Parameters in a Spacecraft using Nonparametric and Parametric Methods [PDF]

open access: yesModeling, Identification and Control, 1996
This article describes identification of vibration frequencies in a spacecraft. A mathematical model of a simple spacecraft is built in MATLAG code, and after a theoretical overview, this spacecraft model is simulated, using a torque excitation, to ...
Åge Skullestad
doaj   +1 more source

Linear Computation Coding: A Framework for Joint Quantization and Computing

open access: yesAlgorithms, 2022
Here we introduce the new concept of computation coding. Similar to how rate-distortion theory is concerned with the lossy compression of data, computation coding deals with the lossy computation of functions.
Ralf Reiner Müller   +2 more
doaj   +1 more source

A robust state estimator against constant measurement delay based on the sensitivity penalisation of model‐parameter errors for systems with no exogenous inputs

open access: yesIET Radar, Sonar & Navigation, 2021
In this study, a class of linear system, which is with no exogenous input and suffered from constant measurement delay and uncertain model‐parameter errors, is under consideration.
Qiunong He   +3 more
doaj   +1 more source

An Aggregation-Based Algebraic Multigrid Method with Deflation Techniques and Modified Generic Factored Approximate Sparse Inverses

open access: yesMathematics, 2023
In this paper, we examine deflation-based algebraic multigrid methods for solving large systems of linear equations. Aggregation of the unknown terms is applied for coarsening, while deflation techniques are proposed for improving the rate of convergence.
Anastasia A. Natsiou   +3 more
doaj   +1 more source

An online intelligent robust adaptive LSQR estimation method for LTI state space model

open access: yesIET Control Theory & Applications, 2023
Regarding the low accuracy and instability of common online methods for estimating dynamic models in the time domain, in the presence of uncertainty in system dynamics, sensor noise and environmental disturbances, this area is still open for further ...
Shahram Hosseini   +2 more
doaj   +1 more source

Many-Body Systems and Quantum Chaos: The Multiparticle Quantum Arnol’d Cat

open access: yesCondensed Matter, 2019
A multi-particle extension of the Arnol’d cat Hamiltonian system is presented, which can serve as a fully dynamical model of decoherence. The behavior of the von Neumann entropy of the reduced density matrix is studied, in time and as a function of the ...
Giorgio Mantica
doaj   +1 more source

A new method for solving ill-conditioned linear systems [PDF]

open access: yesOpuscula Mathematica, 2013
An accurate numerical method is established for matrix inversion. It is shown theoretically that the scheme possesses the high order of convergence of seven. Subsequently, the method is taken into account for solving linear systems of equations.
Fazlollah Soleymani
doaj   +1 more source

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