Results 41 to 50 of about 1,077,728 (350)

The effect of arbitrarily small rigidity on the free oscillations of the Earth

open access: yesAnnals of Geophysics, 1997
The system of propagator equations for an elastic solid becomes singular as the shear modulus becomes vanishingly small. In computational applications there is severe loss of precision as the limit of zero shear modulus is approached.
F. Gilbert
doaj   +1 more source

Dynamic model reduction: An overview of available techniques with application to power systems [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2012
This paper summarises the model reduction techniques used for the reduction of large-scale linear and nonlinear dynamic models, described by the differential and algebraic equations that are commonly used in control theory. The groups of methods
Đukić Savo D., Sarić Andrija T.
doaj   +1 more source

Asymptotics of conduction velocity restitution in models of electrical excitation in the heart [PDF]

open access: yes, 2011
We extend a non-Tikhonov asymptotic embedding, proposed earlier, for calculation of conduction velocity restitution curves in ionic models of cardiac excitability.
Simitev, R.D., Biktashev, V.N.
core   +1 more source

Singular perturbation theory

open access: yesNonlinear dynamics, 2019
When we apply the steady-state approximation (SSA) in chemi cal k netics, we typically argue that some of the intermediates are highly reactive, so that they a r removed as fast as they are made.
M. Roussel
semanticscholar   +1 more source

Existence of Solitary Waves in a Perturbed KdV-mKdV Equation

open access: yesJournal of Mathematics, 2021
In this paper, we establish the existence of a solitary wave in a KdV-mKdV equation with dissipative perturbation by applying the geometric singular perturbation technique and Melnikov function.
Chengqun Li, Minzhi Wei, Yuanhua Lin
doaj   +1 more source

Principal component analysis and perturbation theory–based robust damage detection of multifunctional aircraft structure [PDF]

open access: yes, 2013
A fundamental problem in structural damage detection is to define an efficient feature to calculate a damage index. Furthermore, due to perturbations from various sources, we also need to define a rigorous threshold whose overtaking indicates the ...
HAJRYA, Rafik, MECHBAL, Nazih
core   +1 more source

Finite-Time Control of Markov Jump Lur'e Systems With Singular Perturbations

open access: yesIEEE Transactions on Automatic Control, 2023
This article investigates the asynchronous controller design issue for Markov jump Lur'e systems with singular perturbations within a fixed time interval.
Jun Cheng, Ju H. Park, Zhengpeng Wu
semanticscholar   +1 more source

Singular p-Laplacian equations with superlinear perturbation

open access: yesJournal of Differential Equations, 2019
We consider a nonlinear Dirichlet problem driven by the p-Laplace operator and with a right-hand side which has a singular term and a parametric superlinear perturbation.
N. Papageorgiou, Patrick Winkert
semanticscholar   +1 more source

Beyond Adiabatic Elimination: Effective Hamiltonians and Singular Perturbation [PDF]

open access: yes, 2015
Adiabatic elimination is a standard tool in quantum optics, that produces an effective Hamiltonian for a relevant subspace of states, incorporating effects of its coupling to states with much higher unperturbed energy.
M. Sanz, E. Solano, '. L. Egusquiza
semanticscholar   +1 more source

Highlighting Link Prediction in Bipartite Networks via Structural Perturbation

open access: yesIEEE Access, 2018
Most of the link prediction algorithms for bipartite networks assume that the generation of link is based on a predefined prior assumption. However, for the real-world bipartite networks, the generation mechanism of link is still ambiguous due to their ...
Xue Chen   +4 more
doaj   +1 more source

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