Results 21 to 30 of about 11,548,558 (212)

A continuous finite element method with face penalty to approximate Friedrichs' systems [PDF]

open access: yesESAIM: Mathematical Modelling and Numerical Analysis, 2007
The authors generalize the face penalty technique of \textit{E. Burman} [SIAM J. Numer. Anal. 43, No. 5, 2012--2033 (2005; Zbl 1111.65102)] and of \textit{E. Burman} and \textit{P. Hansbo} [Comput. Methods Appl. Mech. Eng. 193, No. 15--16, 1437--1453 (2004; Zbl 1085.76033)] in order to approximate satisfactorily Friedrichs' systems using continuous ...
Burman, E, Ern, A
openaire   +3 more sources

ADI-MRTD Algorithm for Periodic Structures Analysis

open access: yesInternational Journal of Antennas and Propagation, 2018
In this paper, a novel algorithm based on the alternating direction implicit (ADI) multiresolution time-domain (MRTD) method for periodic structure simulation is proposed.
Xiaohua Dong   +4 more
doaj   +1 more source

Efficient Frequency-Dependent Newmark-Beta-FDTD Method for Periodic Grating Calculation

open access: yesIEEE Photonics Journal, 2016
In this paper, the Newmark-Beta algorithm is introduced into the finite-difference time-domain (FDTD) method in dispersion media, resulting in an unconditionally stable method for periodic metallic grating analysis.
Sheng-Bing Shi   +5 more
doaj   +1 more source

Two-step Lax–Friedrichs method

open access: yesApplied Mathematics Letters, 2005
AbstractThe usual Lax–Friedrichs (LxF) method is not dissipative, but we show that a simple variant called the two-step LxF method is dissipative.
openaire   +2 more sources

On the Discontinuous Galerkin Method for Friedrichs Systems in Graph Spaces [PDF]

open access: yes, 2006
Solutions of Friedrichs systems are in general not of Sobolev regularity and may possess discontinuities along the characteristics of the differential operator. We state a setting in which the well-posedness of Friedrichs systems on polyhedral domains is ensured, while still allowing changes in the inertial type of the boundary.
openaire   +5 more sources

The problem of the Russian Federation image formation by German think tanks in the context of the Syrian crisis (case of Friedrich-Ebert-Stiftung)

open access: yesVestnik RUDN. International Relations, 2018
The relevance of the research topic due to the ever-increasing role of the analytical institutions in the process of formation of Russia’s image in the public consciousness.
Natalia Viktorovna Ivkina
doaj   +1 more source

Ozone measurement practice in the laboratory using Schönbein's method [PDF]

open access: yesGeoscience Communication, 2020
We present a laboratory technique to measure tropospheric ozone, following a traditional method developed by Christian Friedrich Schönbein in the 19th century.
I. A. Ramirez-Gonzalez   +4 more
doaj   +1 more source

A Precise-Integration Time-Domain Formulation Based on Auxiliary Differential Equation for Transient Propagation in Plasma

open access: yesIEEE Access, 2020
The electromagnetic wave propagation through plasma medium is one of the most important research fields in computational electromagnetics. A numerical formulation based on both the auxiliary differential equation (ADE) and the precise-integration time ...
Zhen Kang   +4 more
doaj   +1 more source

Discontinuous Galerkin methods for Friedrichs systems with irregular solutions [PDF]

open access: yes, 2004
This work is concerned with the numerical solution of Friedrichs systems by discontinuous Galerkin finite element methods (DGFEMs). Friedrichs systems are boundary value problems with symmetric, positive, linear first-order partial differential operators and allow the unified treatment of a wide range of elliptic, parabolic, hyperbolic and mixed-type ...
openaire   +2 more sources

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