Results 1 to 10 of about 16,343 (165)

Kapitza–Dirac effect with traveling waves

New Journal of Physics, 2015
We report on the possibility of diffracting electrons from light waves traveling inside a dielectric medium. We show that, in the frame of reference which moves with the group velocity of light, the traveling wave acts as a stationary diffraction grating
Armen G Hayrapetyan, Karen K Grigoryan, Jörg B Götte, Rubik G Petrosyan   +3 more
doaj   +4 more sources

Accurate detection method of traveling wave shape based on EEMD and L1 norm regularization

International Journal of Electrical Power & Energy Systems
Aiming at the problem of waveform distortion of the secondary traveling wave obtained from the primary traveling wave signal transmitted by the voltage traveling wave sensor, an accurate detection method of voltage traveling wave based on ensemble ...
Tao Tang, Xiaohan Li, Xiangjun Zeng, Yu Zhou, Kangjian Yuan, Lanxi Bi   +5 more
doaj   +3 more sources

Understanding the impacts of extreme weather on biological control through traveling wave analysis of a prey-predator model [PDF]

Scientific Reports
This study investigates the effects of extreme weather events on the efficacy of biological control of invasive species using a prey-predator reaction-diffusion model with the Allee effect.
Most Shewly Aktar, Yuanxi Yue, Majid Bani-Yaghoub, Chunhua Ou, Md Afsar Ali   +4 more
doaj   +2 more sources

Design and Application of a Traveling Wave Pulse Power Supply for Traveling Wave Ion Mobility Spectrometry [PDF]

Zhipu Xuebao, 2022
Ion mobility (IM) coupled mass spectrometry (MS) is a versatile tool for analytical separations, characterization, and detection by measuring collision cross-sections and mass-to-charge (m/z) ratios.
LI Hong1, DENG Fu-long1, GUO Xing2, LYU Yan-tong3, YUE Han-lu1, WANG Ru-xin1, YANG Yan-ting4, ZHAO Zhong-jun5, DUAN Yi-xiang1   +8 more
doaj   +1 more source

Identification of overhead line fault traveling wave and interference clutter based on convolution neural network and random forest fusion

Energy Reports, 2023
High-speed traveling wave acquisition devices often use a mutation start algorithm with a low threshold value, which can collect a large number of interference clutters.
Xincui Tian, Ziqian Liu, Jinggang Liu, Jieshan Shan, Jing Song, Hongchun Shu   +5 more
doaj   +1 more source

Noisy traveling waves: Effect of selection on genealogies [PDF]

Europhysics Letters (EPL), 2006
For a family of models of evolving population under selection, which can be described by noisy traveling wave equations, the coalescence times along the genealogical tree scale like $\log^αN$, where $N$ is the size of the population, in contrast with neutral models for which they scale like $N$.
Brunet, E, Derrida, Bernard, Mueller, A., Munier, S   +3 more
openaire   +3 more sources

Influence Analysis of Traveling Wave Effect on Rail Interaction of Long-Span Suspension Bridge

Applied Sciences, 2022
At present, there are few research results on the seismic response of the track system on railway suspension bridges, and relevant research has not yet formed a certain standard.
Xiangdong Yu, Chuhao Wang, Haiquan Jing
doaj   +1 more source

Existence and Nonexistence of Traveling Wave Solutions for a Reaction–Diffusion Preys–Predator System with Switching Effect

Advances in Mathematical Physics, 2023
In this paper, we are concerned with traveling wave solutions for two preys–one predator system with switching effect. First, we discuss that there is no traveling wave solution for this system by using linearization method.
Hang Zhang, Yujuan Jiao, Jinmiao Yang
doaj   +1 more source

Non-contact detection of heat seal defect using the coincidence effect of airborne ultrasound

Nihon Kikai Gakkai ronbunshu, 2020
Heat sealing is a packaging technique by means of welding of seal materials with heating and compression, and is widely used for hermetic seal of foods and medical supplies.
Kenta MORI, Takumi INOUE, Ren KADOWAKI
doaj   +1 more source

Heat transfer enhancement and torque reduction by traveling wave-like blowing and suction in turbulent Taylor-Couette flow

Journal of Thermal Science and Technology, 2021
Direct numerical simulations of turbulent Taylor-Couette flows are performed to investigate the effect of a traveling wave control on torque and heat transfer. In the Taylor-Couette flow, inner and outer cylinders are rotating and immobile, respectively,
Hiroya MAMORI, Koji FUKUDOME, Kohei OGINO, Naoya FUKUSHIMA, Makoto YAMAMOTO   +4 more
doaj   +1 more source