Results 261 to 270 of about 51,737 (307)

Measurement-grade video for computer vision in neurology: an international consensus framework for acquisition and reporting

Alty J, Amprimo G, Shin JH, Wuehr M, Novotny M, Haberfehlner H, Ferraris C, Li R, Merello M, de Koning-Tijssen M, Relton S, Wong D, Taeger J, Zwergal A, Walther S, Weishaupt J, Häusler KG, Rusz J, Taati B, Roemmich R, McKeown M, Gupta AS, Friedrich MU.   +22 more
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The Friedrich Microkjeldahl Method for Nitrogen

Journal of AOAC INTERNATIONAL, 1950
Lawrence M White, Mary D Kilpatrick, Marion C Long, Geraldinl E Secor   +3 more
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A Unified Discontinuous Petrov--Galerkin Method and Its Analysis for Friedrichs' Systems

SIAM Journal on Numerical Analysis, 2013
We propose a unified discontinuous Petrov--Galerkin (DPG) framework with optimal test functions for Friedrichs-like systems, which embrace a large class of elliptic, parabolic, and hyperbolic partial differential equations (PDEs). The well-posedness, i.e., existence, uniqueness, and stability, of the DPG solution is established on a single abstract DPG
Tan Bui-Thanh, Leszek F. Demkowicz, Omar Ghattas   +2 more
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A posteriori error estimates in finite element methods for general Friedrichs' systems

Computer Methods in Applied Mechanics and Engineering, 2000
The authors give a new a posteriori error estimator for the general Friedrichs system based on a comparison of an appropriate norm of the exact error with an approximate solution. The estimate is independent of space dimension and the method of numerical approximation.
Achchab, B., Agouzal, A., Baranger, J., Maitre, J. F.   +3 more
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Friedrichs Method in a Lyapunov Problem

Applicable Analysis, 2002
By using the well-known Friedrichs extension and some a priori inequality, we obtain weak solutions of a Lyapunov equation. In particular, we show that the Lyapunov functions satisfying necessary and sufficient conditions in the domain of asymptotic stability of a singular point some dynamical system must be absolutely continuous.
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The Lax–Friedrichs sweeping method for optimal control problems in continuous and hybrid dynamics

Nonlinear Analysis: Theory, Methods & Applications, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kao, Chiu Yen, Navasca, Carmeliza, Osher, Stanley   +2 more
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Discontinuous Galerkin Methods for Friedrichs’ Systems

2007
This work presents a unified analysis of Discontinuous Galerkin methods to approximate Friedrichs’ systems. A general set of boundary conditions is identified to guarantee existence and uniqueness of solutions to these systems. A formulation enforcing the boundary conditions weakly is proposed.
Alexandre Ern, Jean-Luc Guermond
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Beyond the Courant-Friedrichs-Lewy condition: Numerical methods for the wave problem using deep learning

Journal of Computational Physics, 2021
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Oded Ovadia, Adar Kahana, Eli Turkel, Shai Dekel   +3 more
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Quasinilpotent variant of Friedrichs' method in the theory of similarity of linear operators

Functional Analysis and Its Applications, 1983
Let X denote a complex Banach space. A closed linear operator A on X is called non-quasianalytic, if it has a representation \(A=A_ 1+iA_ 2\), \(D(A)\subset D(A_ 1)\cap D(A_ 2)\), where \(iA_ 1\), \(iA_ 2\), are generators of strongly continuous groups of operators \(\{T_ 1(t)\}\), \(\{T_ 2(t)\}\), \(t\geq 0\), which commute, and \(\int (\log \| T_ k(t)
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