Results 11 to 20 of about 135,181 (264)

Wave Motion Analysis in Plane via Hermitian Cubic Spline Wavelet Finite Element Method

open access: yesShock and Vibration, 2020
A plane Hermitian wavelet finite element method is presented in this paper. Wave motion can be used to analyze plane structures with small defects such as cracks and obtain results.
Xiaofeng Xue   +3 more
doaj   +1 more source

Investigation of the plane wave coupling to a linearly loaded transmission line network

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2020
The article is concerned with a complex investigation of the influence of the plane wave coupling with a certain function of time, incident direction and polarization to a linearly loaded transmission line network comprised of three single-wire ...
L. M. Galeev
doaj   +1 more source

Two-Dimensional Wavenumber Analysis Implemented in Ultrasonic Vector Doppler Method with Focused Transmit Beams

open access: yesSensors, 2022
The multi-angle Doppler method was introduced for the estimation of velocity vectors by measuring axial velocities from multiple directions. We have recently reported that the autocorrelation-based velocity vector estimation could be ameliorated ...
Hideyuki Hasegawa   +3 more
doaj   +1 more source

Generation and Analysis of Ultrasound Images Using Plane Wave and Sparse Arrays Techniques

open access: yesSensors, 2018
Ultrasonic imaging is one of the most important techniques to help medical diagnosis. However, obtaining high quality images requires the acquisition, processing, and storage of a large amount of data.
Nivaldo T. Schiefler   +5 more
doaj   +1 more source

On horizons and plane waves [PDF]

open access: yesClassical and Quantum Gravity, 2003
We investigate the possibility of having an event horizon within several classes of metrics that asymptote to the maximally supersymmetric IIB plane wave. We show that the presence of a null Killing vector (not necessarily covariantly constant) implies an effective separation of the Einstein equations into a standard and a wave component.
Liu, James T.   +2 more
openaire   +4 more sources

Solve the passive interference of UHF transmission lines based on LE-PO method

open access: yesThe Journal of Engineering, 2018
On the research about the ultra-high frequency (UHF) re-radiation interference (RRI) from the power lines, traditional high-frequency algorithms need excessive computing resources or have a bad calculation precision.
Bo Tang, Yaowei Li, Hansheng Huang
doaj   +1 more source

Analytical Study on Electromagnetic Shielding Characteristics of Wire Mesh

open access: yesZhongguo dianli, 2019
Based on the surface impedance model of metal mesh and the full wave simulation software, in this article the applicable range of the formula for calculating the shielding effectiveness of metal mesh for plane wave is discussed.On this basis, when the ...
Yonghong WANG   +5 more
doaj   +1 more source

Unique Determination of the Shape of a Scattering Screen from a Passive Measurement

open access: yesMathematics, 2020
We consider the problem of fixed frequency acoustic scattering from a sound-soft flat screen. More precisely, the obstacle is restricted to a two-dimensional plane and interacting with an arbitrary incident wave, it scatters acoustic waves to three ...
Emilia Blåsten   +2 more
doaj   +1 more source

Nature friendly single atom Pt catalyst for propane dehydrogenation [PDF]

open access: yesPolyolefins Journal
Activity of 111 surface of PtGa alloy in which three atom Pt centers are covered by In atoms is investigated as single atom Pt catalyst of propane dehydrogenation (PDH) by using quantum mechanical (QM) calculations.
Saeed K. Amini
doaj   +1 more source

Propagation of plane waves in a rotating magneto-thermoelastic fiber-reinforced medium under G-N theory

open access: yesApplied and Computational Mechanics, 2017
The article is concernedwith the possibility of plane wave propagation in a rotating elastic medium under the action of magnetic and thermal fields.
Maity N., Barik S.P., Chaudhuri P.K.
doaj   +1 more source

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