Results 61 to 70 of about 125,191 (194)

Computational modes and grid imprinting on five quasi-uniform spherical C-grids [PDF]

open access: yes, 2011
Currently, most operational forecasting models use latitude-longitude grids, whose convergence of meridians towards the poles limits parallel scaling. Quasi-uniform grids might avoid this limitation.
Cotter, Colin J.   +2 more
core   +1 more source

The Modular Arbitrary-Order Ocean-Atmosphere Model: MAOOAM v1.0 [PDF]

open access: yesGeoscientific Model Development, 2016
This paper describes a reduced-order quasi-geostrophic coupled ocean–atmosphere model that allows for an arbitrary number of atmospheric and oceanic modes to be retained in the spectral decomposition. The modularity of this new model allows one to easily
L. De Cruz, J. Demaeyer, S. Vannitsem
doaj   +1 more source

Mixed finite elements for numerical weather prediction

open access: yes, 2012
We show how two-dimensional mixed finite element methods that satisfy the conditions of finite element exterior calculus can be used for the horizontal discretisation of dynamical cores for numerical weather prediction on pseudo-uniform grids.
Arakawa   +29 more
core   +1 more source

Sectoral r modes and periodic RV variations of Sun-like stars [PDF]

open access: yes, 2019
Radial velocity (RV) measurements are used to search for planets orbiting late-type main-sequence stars and confirm the transiting planets. The most advanced spectrometers are approaching a precision of $\sim 10$ cm/s that implies the need to identify ...
Gizon, L.   +4 more
core   +2 more sources

A 3-D Printed Bandpass Filter Using TM₂₁₁-Mode Slotted Spherical Resonators With Enhanced Spurious Suppression

open access: yesIEEE Access, 2020
This article presents a Ka-band fourth-order slotted spherical resonator waveguide bandpass filter (BPF) with a wide spurious suppression stopband.
Fan Zhang   +9 more
doaj   +1 more source

Perturbative description of nuclear double beta decay transitions

open access: yes, 1998
A consistent treatment of intrinsic and collective coordinates is applied to the calculation of matrix elements describing nuclear double beta decay transitions.
Becchi   +14 more
core   +1 more source

Detection of Jovian seismic waves: a new probe of its interior structure [PDF]

open access: yes, 2011
Knowledge of Jupiter's deep interior would provide unique constraints on the formation of the Solar System. Measurement of its core mass and global composition would shed light on whether the planet formed by accretion or by direct gravitational collapse.
Gaulme, Patrick   +4 more
core   +2 more sources

Curvilinear vector finite difference approach to the computation of waveguide modes

open access: yesAdvanced Electromagnetics, 2012
We describe here a Vector Finite Difference approach to the evaluation of waveguide eigenvalues and modes for rectangular, circular and elliptical waveguides. The FD is applied using a 2D cartesian, polar and elliptical grid in the waveguide section.
A. Fanti, G. Mazzarella, G. Montisci
doaj   +1 more source

Modes analyses of cylindrical waveguides using the MFCM

open access: yesElectronics Letters, 2021
An efficient modes analyses technique for isotropic or anisotropic material filled 2D metallic waveguides with an arbitrary contour using the multifilament current method (MFCM) is presented.
Kai Wang   +6 more
doaj   +1 more source

Optical excitation of atomic force microscopy cantilever for accurate spectroscopic measurements

open access: yesEPJ Techniques and Instrumentation, 2020
Reliable operation of frequency modulation mode atomic force microscopy (FM-AFM) depends on a clean resonance of an AFM cantilever. It is recognized that the spurious mechanical resonances which originate from various mechanical components in the ...
Yoichi Miyahara   +6 more
doaj   +1 more source

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