Results 21 to 30 of about 5,511,845 (178)

Applications of inverse simulation to a nonlinear model of an underwater vehicle [PDF]

open access: yes, 2008
Inverse simulation provides an important alternative to conventional simulation and to more formal mathematical techniques of model inversion. The application of inverse simulation methods to a nonlinear dynamic model of an unmanned underwater ...
Murray-Smith, D., Lu, L., McGookin, E.
core   +8 more sources

A Predictor-Corrector Methods for Mixed Inverse Variational Inequalities [PDF]

open access: yes, 2009
In this paper, a class of mixed inverse variational inequalities is introduced and studied. We prove the existence of the solution of the auxiliary problem for mixed inverse variational inequalities, suggest a predictor-corrector method for solving the ...
Shi, Chaofeng
core   +6 more sources

Morphisms and inverse problems for Darboux integrating factors [PDF]

open access: yesProceedings of the Royal Society of Edinburgh: Section A Mathematics, 2013
Polynomial vector fields which admit a prescribed Darboux integrating factor are quite well understood when the geometry of the underlying curve is non-degenerate. In the general setting, morphisms of the affine plane may remove degeneracies of the curve, and thus allow more structural insight.
Llibre Saló, Jaume   +2 more
openaire   +3 more sources

Nilpotent centres via inverse integrating factors [PDF]

open access: yesEuropean Journal of Applied Mathematics, 2016
In this paper, we are interested in the nilpotent centre problem of planar analytic monodromic vector fields. It is known that the formal integrability is not enough to characterize such centres. More general objects are considered as the formal inverse integrating factors. However, the existence of a formal inverse integrating factor is not sufficient
Algaba, Antonio   +2 more
openaire   +3 more sources

Darboux integrating factors: Inverse problems

open access: yesJournal of Differential Equations, 2011
We discuss planar polynomial vector fields with prescribed Darboux integrating factors, in a nondegenerate affine geometric setting. We establish a reduction principle which transfers the problem to polynomial solutions of certain meromorphic linear systems, and show that the space of vector fields with a given integrating factor, modulo a subspace of ...
Christopher, Colin   +3 more
openaire   +4 more sources

Formal Inverse Integrating Factor and the Nilpotent Center Problem [PDF]

open access: yesInternational Journal of Bifurcation and Chaos, 2016
We are interested in deepening the knowledge of methods based on formal power series applied to the nilpotent center problem of planar local analytic monodromic vector fields [Formula: see text]. As formal integrability is not enough to characterize such a center we use a more general object, namely, formal inverse integrating factors [Formula: see ...
openaire   +2 more sources

Approximation of Bayesian inverse problems for PDEs [PDF]

open access: yes, 2010
Inverse problems are often ill posed, with solutions that depend sensitively on data. In any numerical approach to the solution of such problems, regularization of some form is needed to counteract the resulting instability.
Dashti, Massoumeh   +7 more
core   +1 more source

Inverse integrating factor and its applications

open access: yes, 2021
Este trabalho é dedicado ao estudo do fator integrante inverso de sistemas diferenciais planares. O fator integrante inverso está principalmente relacionado à solução do problema de integrabilidade de campo de vetores planares, uma vez que a existência ...
Mussolin, Thaís da Silva
core  

Inverse medium problem for a singular contrast [PDF]

open access: yes, 2019
We consider an inverse medium problem in two- and three-dimensional cases. Namely, we investigate the problem of reconstruction of unknown compactly supported refractive index (contrast) from L-2 with a fixed positive wave number.
T. Tyni, Serov, V., Tyni, T., V. Serov
core   +1 more source

Model predictive control architecture for rotorcraft inverse simulation [PDF]

open access: yes, 2013
A novel inverse simulation scheme is proposed for applications to rotorcraft dynamic models. The algorithm adopts an architecture that closely resembles that of a model predictive control scheme, where the controlled plant is represented by a high-order ...
AVANZINI, Giulio   +5 more
core   +1 more source

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