Results 21 to 30 of about 1,108,741 (301)
Sensors, 2022 The exit velocity of the armature is an important indicator in measuring the launching performance of the electromagnetic gun. The non-contact photoelectric detection technology with the use of a laser screen was applied to the measurement of the ...
Huiyan Hao, Wenyu Liu, Peng Xu, Hui Zhao
doaj +1 more source
Fully integrated three dimensional sound intensity sensor [PDF]
, 2007 For the first time, a complete 3-dimensional sound intensity sensor – consisting of 4 particle velocity sensors and a pressure microphone – has been integrated on a single chip, providing the possibility to do nearly point measurements of acoustic ...
Elwenspoek, M. +3 more
core +3 more sources
Real-Time and Long-Distance Measurement of Displacement Based on Optoelectronic Oscillator
IEEE Access, 2019 A frequency-encoded real-time and long-distance displacement measurement method based on two cross-referencing optoelectronic oscillators (OEOs) is proposed and experimentally demonstrated.
Zhiqiang Fan +5 more
doaj +1 more source
Direct measurement of superluminal group velocity and of signal velocity in an optical fiber [PDF]
, 2004 We present an easy way of observing superluminal group velocities using a birefringent optical fiber and other standard devices. In the theoretical analysis, we show that the optical properties of the setup can be described using the notion of "weak ...
J. D. Jackson +11 more
core +2 more sources
Journal of Imaging, 2020 We evaluate velocity of the tongue tip with magnetic resonance imaging (MRI) using two independent approaches. The first one consists in acquisition with a real-time technique in the mid-sagittal plane.
Karyna Isaieva +5 more
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Velocity Vector Estimation of Two-Dimensional Flow Field Based on STIV
Sensors, 2023 As an important part of hydrometry, river discharge monitoring plays an irreplaceable role in the planning and management of water resources and is an essential element and necessary means of river management.
Jianghuai Lu +2 more
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WIYN Open Cluster Study. XXXVIII. Stellar Radial Velocities in the Young Open Cluster M35 (NGC 2168) [PDF]
, 2009 We present 5201 radial-velocity measurements of 1144 stars, as part of an ongoing study of the young (150 Myr) open cluster M35 (NGC 2168). We have observed M35 since 1997, using the Hydra Multi-Object Spectrograph on the WIYN 3.5m telescope. Our stellar
Aaron M. Geller +27 more
core +1 more source
Applied Sciences, 2023 Photoacoustic (PA) velocimetry holds the advantage of detecting ultrasound signals from selective targets sensitive to specific wavelengths of light irradiation.
Kotaro Fujinami, Katsuaki Shirai
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The Blackhole-Dark Matter Halo Connection [PDF]
, 2015 We explore the connection between the central supermassive blackholes (SMBH) in galaxies and the dark matter halo through the relation between the masses of the SMBHs and the maximum circular velocities of the host galaxies, as well as the relationship ...
Akl, Maya Abi +3 more
core +3 more sources
Meikuang Anquan, 2020 Taking the grouting filling treatment project in the goaf of 8712 working face of Huoshizui Coal Mine as the background, based on the theory of mining subsidence and the method of combining borehole wave velocity test and pressure water test, the ...
HUANG Jianfeng, WU Zhang, WANG Yutao, DUAN Peiran, LI Yongqiang, ZHANG Hao
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