Results 41 to 50 of about 10,929 (167)
A Posteriori Error Estimates for DDDAS Inference Problems
Procedia Computer Science, 2014 AbstractInference problems in dynamically data-driven application systems use physical measurements along with a physical model to estimate the parameters or state of a physical system. Errors in measurements and uncertainties in the model lead to inaccurate inference results. This work develops a methodology to estimate the impact of various errors on
Rao, V., Sandu, Adrian
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FPU-Supported Running Error Analysis
Acta Polytechnica, 2010 A-posteriori forward rounding error analyses tend to give sharper error estimates than a-priori ones, as they use actual data quantities. One of such a-posteriori analysis – running error analysis – uses expressions consisting of two parts; one generates
T. Zahradnický, R. Lórencz
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An a posteriori error estimator for model adaptivity in electrocardiology [PDF]
Computer Methods in Applied Mechanics and Engineering, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mirabella, L., Nobile, F., Veneziani, A.
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ALGEBRAIC NONLINEARITY IN VOLTERRA-HAMMERSTEIN EQUATIONS [PDF]
Journal of Sciences, Islamic Republic of Iran, 1999 Here a posteriori error estimate for the numerical solution of nonlinear Voltena- Hammerstein equations is given. We present an error upper bound for nonlinear Voltena-Hammastein integral equations, in which the form of nonlinearity is algebraic and ...
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Nodal auxiliary a posteriori error estimates
Mathematics of ComputationWe introduce and explain key relations between a posteriori error estimates and subspace correction methods viewed as preconditioners for problems in infinite dimensional Hilbert spaces. We set the stage using the Finite Element Exterior Calculus and Nodal Auxiliary Space Preconditioning.
Yuwen Li 0001, Ludmil T. Zikatanov
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A Posteriori Error Estimates for Axisymmetric and Nonlinear Problems
Advances in Computational Mathematics, 2001 Suppose \(x_1\), \(x_2\), \(x_3\) denote the cylidrical coordinates in \(\mathbb{R}^3\). The authors first study the axisymmetric solution of \[ -\sum^3_{i=1} {\partial\over\partial x_i} \Biggl(A_i{\partial U\over\partial x_i}\Biggr)= F, \] in a rotation body with mixed Dirichlet and Neumann boundary conditions in order to establish a posteriori ...
Krízek, M, Nemec, J, Vejchodský, T
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Advances in Electrical and Computer Engineering, 2013 This paper presents a study on the influence of the extrinsic information scaling coefficient value (eic) on the bit and frame error rate (BER/FER), for single and double binary turbo codes (S/DBTC) decoded with maximum a posteriori (MAP) and maximum ...
BALTA, H., DOUILLARD, C.
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A posteriori error estimates for the Richards equation
Mathematics of ComputationThe Richards equation is commonly used to model the flow of water and air through soil, and it serves as a gateway equation for multiphase flows through porous media. It is a nonlinear advection–reaction–diffusion equation that exhibits both parabolic–hyperbolic and parabolic–elliptic kind of degeneracies. In this study, we provide
Mitra, Koondanibha, Vohralík, Martin
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divand-1.0: n-dimensional variational data analysis for ocean observations [PDF]
Geoscientific Model Development, 2014 A tool for multidimensional variational analysis (divand) is presented. It allows the interpolation and analysis of observations on curvilinear orthogonal grids in an arbitrary high dimensional space by minimizing a cost function.
A. Barth +4 more
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Singular Cauchy Problem for a Nonlinear Fractional Differential Equation
MathematicsThe paper studies a nonlinear equation including both fractional and ordinary derivatives. The singular Cauchy problem is considered. The theorem of the existence of uniqueness of a solution in the neighborhood of a fixed singular point of algebraic type
Victor Orlov
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