Results 51 to 60 of about 544,469 (212)

Error analysis of a continuous-discontinuous Galerkin finite element method for generalized 2D vorticity dynamics [PDF]

open access: yes, 2005
A detailed a priori error estimate is provided for a continuous-discontinuous Galerkin finite element method suitable for two-dimensional geophysical flows.
Bokhove, O.   +2 more
core   +1 more source

A C0 Nonconforming Virtual Element Method for the Kirchhoff Plate Obstacle Problem

open access: yesAxioms
This paper investigates a novel C0 nonconforming virtual element method (VEM) for solving the Kirchhoff plate obstacle problem, which is described by a fourth-order variational inequality (VI) of the first kind.
Bangmin Wu, Jiali Qiu
doaj   +1 more source

A Simultaneous Stacking and Deblending Algorithm for Astronomical Images

open access: yes, 2010
Stacking analysis is a means of detecting faint sources using a priori position information to estimate an aggregate signal from individually undetected objects. Confusion severely limits the effectiveness of stacking in deep surveys with limited angular
Blanc   +21 more
core   +1 more source

Analysis of Adjoint Error Correction for Superconvergent Functional Estimates [PDF]

open access: yes, 2001
Earlier work introduced the notion of adjoint error correction for obtaining superconvergent estimates of functional outputs from approximate PDE solutions. This idea is based on a posteriori error analysis suggesting that the leading order error term in
Giles, M. B., Pierce, Niles A.
core  

The Sample Size Influence in the Accuracy of the Image Classification of the Remote Sensing [PDF]

open access: yesRevista Brasileira de Cartografia, 2004
Landuse/landcover maps produced by classification of remote sensing images incorporate uncertainty. This uncertainty is measured by accuracy indices using reference samples.
Thomaz C. e C. da Costa   +1 more
doaj  

Chebyshev Collocation Method for Parabolic Partial Integrodifferential Equations

open access: yesAdvances in Mathematical Physics, 2016
An efficient technique for solving parabolic partial integrodifferential equation is presented. This technique is based on Chebyshev polynomials and finite difference method. A priori error estimate for the proposed technique is deduced.
M. Sameeh, A. Elsaid
doaj   +1 more source

Integrated Factor Graph Algorithm for DOA-Based Geolocation and Tracking

open access: yesIEEE Access, 2020
This paper proposes a new position tracking algorithm by integrating extended Kalman filter (EKF) and direction-of-arrival (DOA)-based geolocation into one factor graph (FG) framework.
Meng Cheng   +2 more
doaj   +1 more source

A Priori Error Estimates for Some Discontinuous Galerkin Immersed Finite Element Methods [PDF]

open access: yesJournal of Scientific Computing, 2015
In this paper, we derive a priori error estimates for a class of interior penalty discontinuous Galerkin (DG) methods using immersed finite element (IFE) functions for a classic second-order elliptic interface problem. The error estimation shows that these methods can converge optimally in a mesh-dependent energy norm.
Lin, Tao, Yang, Qing, Zhang, Xu
openaire   +2 more sources

Error Evaluation in a Stereovision-Based 3D Reconstruction System

open access: yesEURASIP Journal on Image and Video Processing, 2010
The work presented in this paper deals with the performance analysis of the whole 3D reconstruction process of imaged objects, specifically of the set of geometric primitives describing their outline and extracted from a pair of images knowing their ...
Abdelkrim Belhaoua   +2 more
doaj   +2 more sources

A Nash-Hormander iteration and boundary elements for the Molodensky problem

open access: yes, 2013
We investigate the numerical approximation of the nonlinear Molodensky problem, which reconstructs the surface of the earth from the gravitational potential and the gravity vector.
Costea, Adrian   +2 more
core   +1 more source

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