Results 41 to 50 of about 271,781 (289)

Dynamic Gesture Recognition with a Terahertz Radar Based on Range Profile Sequences and Doppler Signatures

open access: yesSensors, 2017
The frequency of terahertz radar ranges from 0.1 THz to 10 THz, which is higher than that of microwaves. Multi-modal signals, including high-resolution range profile (HRRP) and Doppler signatures, can be acquired by the terahertz radar system.
Zhi Zhou, Zongjie Cao, Yiming Pi
doaj   +1 more source

Electromagnetic Imaging for Buried Conductors Using Deep Convolutional Neural Networks

open access: yesApplied Sciences, 2023
In the past, many conventional algorithms, such as self-adaptive dynamic differential evolution and asynchronous particle swarm optimization, were used to reconstruct buried objects in the frequency domain; these were unfortunately time-consuming during ...
Chien-Ching Chiu   +4 more
doaj   +1 more source

Realizing broadband electromagnetic transparency with a graded-permittivity sphere

open access: yes, 2014
Broadband electromagnetic transparency phenomenon is realized with a well-designed graded-permittivity sphere, which has an extremely low scattering cross section over a wide frequency range, based on the generalized Mie scattering theory and numerical ...
Gao, Jie, Sun, Lei, Yang, Xiaodong
core   +1 more source

On the effect of superfluid flows on the interaction of microwaves with He II [PDF]

open access: yes, 2012
The paper proposes a possible mechanism of interaction of microwaves with superfluid helium that results in an experimentally observed narrow peak of microwave absorption on the frequencies by the order of the roton frequency.
Khodusov, V. D., Naumovets, A. S.
core   +4 more sources

Dielectric Metamaterials with Toroidal Dipolar Response

open access: yes, 2014
Toroidal multipoles are the terms missing in the standard multipole expansion; they are usually overlooked due to their relatively weak coupling to the electromagnetic fields.
Basharin, Alexey A.   +6 more
core   +2 more sources

Dipole-dipole dispersion interactions between neutrons

open access: yes, 2017
We investigate the long-range interactions between two neutrons utilizing recent data on the neutron static and dynamic electric and magnetic dipole polarizabilities.
Babb, James F.   +2 more
core   +2 more sources

The re-emission spectrum of digital hardware subjected to EMI [PDF]

open access: yes, 2003
The emission spectrum of digital hardware under the influence of external electromagnetic interference is shown to contain information about the interaction of the incident energy with the digital circuits in the system.
Fischer, K   +4 more
core   +1 more source

Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials

open access: yes, 2015
The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and frequency of light. Integration of semiconductors into the active regions of
Averitt, Richard D.   +8 more
core   +1 more source

Higher order forward spin polarizability [PDF]

open access: yes, 2010
As a guideline for future experiments to extract the four (leading) spin polarizabilities of the nucleon, we have constructed the forward amplitude for polarized Compton scattering by dispersion integrals.
Ahrens   +40 more
core   +2 more sources

The Dubna-Mainz-Taipei Dynamical Model for πNScattering and π Electromagnetic Production [PDF]

open access: yesProceedings of the 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015), 2016
Some of the featured results of the Dubna-Mainz-Taipei (DMT) dynamical model for $ N$ scattering and $ ^0$ electromagnetic production are summarized. These include results for threshold $ ^0$ production, deformation of $ (1232)$, and the extracted properties of higher resonances below 2 GeV.
openaire   +2 more sources

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