Results 1 to 10 of about 264,387 (166)

Dynamic leakage mechanism of gas drainage borehole and engineering application

open access: yesInternational Journal of Mining Science and Technology, 2018
Borehole leakage not only affects the gas drainage effect but also presents considerable risk to human security. For the research on the leakage mechanism of gas drainage borehole, the rheological and visco-elastic-plastic characteristics were considered
Sun Yuning, Zhang Junxiang
exaly   +3 more sources

Spatio-Temporal Models for Vibration Monitoring of Elongated Structures Using Profile Laser Scans

open access: yesRemote Sensing, 2021
Vibration monitoring is a frequent task within the general topic of Structural Health Monitoring. For this monitoring, usually accelerometers, strain gauges, fibre optic sensors or Global Navigation Satellite System (GNSS) receivers are placed on pre ...
Christoph Holst, Hans Neuner
doaj   +1 more source

A Low-Complexity Channel Estimation Based on a Least-Squares Algorithm in OFDM Systems

open access: yesApplied Sciences, 2022
As the channel frequency responses (CFRs) at virtual pilot subcarriers are assumed to be zero, the estimated CFRs will have a leakage effect for discrete Fourier transform (DFT)-based channel estimation in OFDM systems.
Yung-An Kao, Kun-Feng Wu
doaj   +1 more source

Noise Radar Technology: Waveforms Design and Field Trials

open access: yesSensors, 2021
Performance of continuous emission noise radar systems are affected by the sidelobes of the output of the matched filter, with significant effects on detection and dynamic range.
Gaspare Galati   +3 more
doaj   +1 more source

Design of High-Power Red VCSEL on a Removable Substrate

open access: yesPhotonics, 2022
In this work, the architecture of a high-power InAlGaP/InGaP vertical-cavity surface-emitting laser (VCSEL) with an emission wavelength of 680 nm was studied.
Chun-Yen Peng   +4 more
doaj   +1 more source

Aging effects of leakage optimizations for caches [PDF]

open access: yesProceedings of the 20th symposium on Great lakes symposium on VLSI, 2010
Besides static power consumption, sub-90nm devices have to account for NBTI effects, which are one of the major concerns about system reliability.Some of the factors that regulate power consumption also impact NBTI-induced aging effects; however, to which extent traditional low-power techniques can mitigate NBTI issues has not been investigated ...
CALIMERA, ANDREA   +3 more
openaire   +2 more sources

Effects of haemodialysis on diabetic macular leakage [PDF]

open access: yesBritish Journal of Ophthalmology, 2000
To evaluate the effects of haemodialysis on macular oedema by fluorescein angiography in patients with diabetic retinopathy and end stage renal disease.In this prospective study, fluorescein angiography was performed on 40 eyes of 22 non-insulin dependent diabetic patients with end stage renal disease just before (baseline) and 4 weeks after the ...
T, Tokuyama, T, Ikeda, K, Sato
openaire   +2 more sources

Revisiting the Effects of Leakage on Dependency Parsing

open access: yesFindings of the Association for Computational Linguistics: ACL 2022, 2022
Recent work by Søgaard (2020) showed that, treebank size aside, overlap between training and test graphs (termed leakage) explains more of the observed variation in dependency parsing performance than other explanations. In this work we revisit this claim, testing it on more models and languages.
Nathaniel Krasner   +2 more
openaire   +2 more sources

FREQUENCY DETERMINATION OF PULSE SIGNAL WITH CONSTANT BEAT BY DINT OF RECURRENT USAGE OF FOURIER TRANSFORM [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2018
The paper proposes an algorithm for frequency estimation of a pulse signal with constant beat under significant distortion conditions with the use of spectral analysis methods.
Ilina Е.S.   +2 more
doaj   +1 more source

Theoretical Model and Numerical Analysis of the Tip Leakage Vortex Variations of a Centrifugal Compressor

open access: yesAerospace, 2022
A centrifugal compressor of a micro turbine generator system is investigated by the theoretical model and numerical analysis to explore the characteristics of the tip leakage vortex as the centrifugal compressor approaches stall. The numerical simulation
Shuli Hong, Jun Chi, Xin Xiang, Weiyu Lu
doaj   +1 more source

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