Results 11 to 20 of about 2,878,811 (302)

Time domain green functions for the homogeneous Timoshenko beam [PDF]

open access: yesThe Quarterly Journal of Mechanics and Applied Mathematics, 1998
Summary: In this paper a wave splitting technique is applied to a homogeneous Timoshenko beam. The purpose is to obtain a diagonal equation in terms of the split fields. These fields are calculated in the time domain from an appropriate set of boundary conditions.
Folkow, Peter D.   +2 more
openaire   +4 more sources

Manipulation of curved beams using beam-domain optimization

open access: yesOptics Express, 2022
An efficient scheme for the design of aperture fields (distributed sources) that radiate arbitrary trajectory curved (accelerating) beams, with enhanced controllability of various beam features, is presented. The scheme utilizes a frame-based phase-space representation of aperture fields to overcome the main hurdles in the design for large apertures ...
Gabriel Lasry   +2 more
openaire   +2 more sources

EFFECT OF LONGITUDINAL BEAM-COUPLING IMPEDANCE ON THE SCHOTTKY SPECTRUM OF BUNCHED BEAMS

open access: yes, 2023
Schottky spectra can be strongly affected by collective effects, in particular those arising from beam-coupling impedance when a large number of bunch charges are involved.
Pieloni, T.   +4 more
core   +2 more sources

Beam Domain Secure Transmission for Massive MIMO Communications [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2018
We investigate the optimality and power allocation algorithm of beam domain transmission for single-cell massive multiple-input multiple-output (MIMO) systems with a multi-antenna passive eavesdropper. Focusing on the secure massive MIMO downlink transmission with only statistical channel state information of legitimate users and the eavesdropper at ...
Wenqian Wu   +3 more
openaire   +3 more sources

Frequency domain beam data for target.

open access: yes, 2022
Frequency domain beam data for target.
Chuanping Zhou (14204340)   +4 more
core   +1 more source

Manipulating Ferroelectric Domains in Nanostructures Under Electron Beams [PDF]

open access: yesPhysical Review Letters, 2013
Freestanding BaTiO3 nanodots exhibit domain structures characterized by distinct quadrants of ferroelastic 90° domains in transmission electron microscopy (TEM) observations. These differ significantly from flux-closure domain patterns in the same systems imaged by piezoresponse force microscopy. Based upon a series of phase field simulations of BaTiO3
Ahluwalia, R.   +7 more
openaire   +5 more sources

Frequency domain beam data of the target.

open access: yes, 2022
Frequency domain beam data of the target.
Chuanping Zhou (14204340)   +4 more
core   +1 more source

A Novel Massive MIMO Beam Domain Channel Model [PDF]

open access: yes2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020
A novel beam domain channel model (BDCM) for massive multiple-input multiple-output (MIMO) communication systems has been proposed in this paper. The near-field effect and spherical wavefront are firstly assumed in the proposed model, which is different from the conventional BDCM for MIMO based on the far-field effect and plane wavefront assumption ...
Fan Lai 0002   +4 more
openaire   +3 more sources

The MICE Muon Beam on ISIS and the beam-line instrumentation of the Muon Ionization Cooling Experiment [PDF]

open access: yes, 2012
The international Muon Ionization Cooling Experiment (MICE), which is under construction at the Rutherford Appleton Laboratory (RAL), will demonstrate the principle of ionization cooling as a technique for the reduction of the phase-space volume occupied
A. Wilson   +826 more
core   +1 more source

Electron beam driven ion-acoustic solitary waves in plasmas with two kappa-distributed electrons

open access: yesScientific Reports, 2023
Formation and the basic features of arbitrary amplitude ion-acoustic solitary waves (IASWs) in a plasma consisting of warm positive ions, two $$\kappa$$ κ -distributed electrons and an electron beam are investigated by using the Sagdeev pseudopotential ...
M. M. Hatami
doaj   +1 more source

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