Results 141 to 150 of about 2,690,813 (243)

A Generalised Quadrature Using Clenshaw-Curti’s Quadrature Rule

open access: yes
International audienceAmong the various classical quadrature rules, some of the most widely used are the Trapezoidal Rule, Simpson’s Rule, Newton–Cotes Rules, Clenshaw–Curtis Quadrature Rule, and Gauss–Legendre Quadrature Rule.
Mohanty, Sanjit Kumar
core  

Evaluating the Impact of Multiscale E‐Region Turbulence on HF Scintillation

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Ionospheric scintillation driven by plasma irregularities disrupts radio propagation across frequencies from HF to L‐band. While phase‐screen methods dominate scintillation modeling, they can be inadequate in the E‐region where irregularity scales can be comparable to the radio wavelength or Fresnel scale and span orders of magnitude.
Alexander Q. Green   +3 more
wiley   +1 more source

Interplay Between Deep Convection and Mesoscale Gravity Waves

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract Although the association between precipitation and mesoscale gravity waves (MGWs) is well documented, the feedback mechanisms governing their amplification remain difficult to isolate. This study uses convection‐permitting numerical simulations with 1–4 km grid spacing to investigate a complex MGW event that occurred over the south‐central ...
Ananya Sen   +2 more
wiley   +1 more source

Tensor‐Train Compression of a Volume Integral Eddy Current Problem in Discontinuous Galerkin

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 21, 15 November 2026.
ABSTRACT The paper presents a low‐rank tensor compression strategy based on the tensor‐train (TT) format for the integral operator arising in eddy current problems. Unlike classical matrix compression techniques such as the fast multipole method (FMM) or hierarchical matrices (ℋ$$ \mathscr{H} $$‐matrices), which typically compress only far‐field ...
Anthony Torosyan   +5 more
wiley   +1 more source

A Geometric Multigrid Preconditioner for Discontinuous Galerkin Shifted Boundary Method

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 21, 15 November 2026.
ABSTRACT I introduce a geometric multigrid preconditioner for the Shifted Boundary Method (SBM) designed to solve PDEs on complex geometries. While the SBM simplifies mesh generation by using a nonconforming background grid, it often results in nonsymmetric linear systems, a complete analysis of which is missing from the literature, especially with ...
Michał Wichrowski
wiley   +1 more source

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