Results 261 to 270 of about 13,894 (296)
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Fast impulsive noise removal in color images
2013 IEEE International Conference on Image Processing, 2013In the paper a novel switching filter based on the reduced ordering statistics, combined with the peer group concept is proposed. The new technique assigns to each pixel the sum of the distances to two closest neighbors and if the sum exceeds a specified threshold, then the pixel is declared as corrupted and replaced, otherwise it is retained. The main
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Solid Dielectric Material Influence on Fast Impulse Partial Discharge Behavior
2005 IEEE Pulsed Power Conference, 2005The cumulative effect of partial discharges (PD) in solid dielectric materials can lead to insulation aging and reduction in dielectric breakdown stress levels. Partial discharge events are parasitic to power levels. This paper compares PD behaviors of four model solid dielectric materials with embedded electrodes exposed to single fast impulses ...
A. Wilder, W. Eickelberg, J. Wilder
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IEEE Transactions on Plasma Science, 2014
Streamer and breakdown behavior of transformer oil under impulse voltage are investigated with experimental observations and simulation. The optical observation by using Intensified Charge-coupled Device (ICCD) fast snapshot technique indicates that streamer channel branching is of a stochastic nature.
Yuan Li +8 more
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Streamer and breakdown behavior of transformer oil under impulse voltage are investigated with experimental observations and simulation. The optical observation by using Intensified Charge-coupled Device (ICCD) fast snapshot technique indicates that streamer channel branching is of a stochastic nature.
Yuan Li +8 more
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An original setup to measure grounding resistances using fast impulse currents and very short leads
Electric Power Systems Research, 2019Abstract This paper presents a method for measuring grounding resistances, which is based on the use of fast impulse current and short leads on the auxiliary measurement circuits. Usually, the conductor length of the voltage and current circuits used in grounding resistance measurements may be quite long depending on the grounding characteristics ...
A.B. Lima +5 more
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Journal of Experimental Biology, 1999
ABSTRACT Saltatory impulse conduction in invertebrates is rare and has only been found in a few giant nerve fibres, such as the pairs of medial giant fibres with a compact multilayered myelin sheath found in shrimps (Penaeus chinensis and Penaeus japonicus) and the median giant fibre with a loose multilayered myelin sheath found in the ...
K, Xu, S, Terakawa
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ABSTRACT Saltatory impulse conduction in invertebrates is rare and has only been found in a few giant nerve fibres, such as the pairs of medial giant fibres with a compact multilayered myelin sheath found in shrimps (Penaeus chinensis and Penaeus japonicus) and the median giant fibre with a loose multilayered myelin sheath found in the ...
K, Xu, S, Terakawa
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Advances in Space Research, 2015
Abstract GOES-12/SXI and SDO/AIA data were used to examine the formation and initial stage of movement for several fast pulse ‘halo’-type coronal mass ejections (HCMEs) that were related to GOES M and X class flares but unrelated to solar filament eruptions.
Iu.S. Zagainova, V.G. Fainshtein
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Abstract GOES-12/SXI and SDO/AIA data were used to examine the formation and initial stage of movement for several fast pulse ‘halo’-type coronal mass ejections (HCMEs) that were related to GOES M and X class flares but unrelated to solar filament eruptions.
Iu.S. Zagainova, V.G. Fainshtein
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Cosmic Research, 2015
The formation and initial stage of the motion of several rapid, impulsive coronal mass ejections of the “halo” type (HCME) associated with flares of M and X class, but unassociated with the eruption of solar filaments, was studied using GOES-12/SXI, SOHO/EIT, and SDO/AIA data.
V. G. Fainshtein, Yu. S. Zagainova
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The formation and initial stage of the motion of several rapid, impulsive coronal mass ejections of the “halo” type (HCME) associated with flares of M and X class, but unassociated with the eruption of solar filaments, was studied using GOES-12/SXI, SOHO/EIT, and SDO/AIA data.
V. G. Fainshtein, Yu. S. Zagainova
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IEEE Photonics Technology Letters, 2012
We demonstrate the novel operation of a Si/Ge-based avalanche photodiode (APD) for the direct generation of ultra-wideband (UWB) frequency comb lines for impulse radio (IR) wireless communication. By applying a dc bias (Vbias) over the breakdown voltage (Vbr) of the APD, the device can exhibit a significant resonant frequency without any optical signal
Jin-Wei Shi +3 more
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We demonstrate the novel operation of a Si/Ge-based avalanche photodiode (APD) for the direct generation of ultra-wideband (UWB) frequency comb lines for impulse radio (IR) wireless communication. By applying a dc bias (Vbias) over the breakdown voltage (Vbr) of the APD, the device can exhibit a significant resonant frequency without any optical signal
Jin-Wei Shi +3 more
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Computational Mechanics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Streak Camera Observations of Partial Discharg Polyethylene under Fast Impulse Voltage Stress
1991 Annual Report. Conference on Electrical Insulation and Dielectric Phenomena,, 2005Samples of polyethylene with electrical trees at the tip of a needle radius/9 mm gap) molded into the material were subjected to voltage impulses of between 50 and 85 kV (20 ns/2 /spl mu/s). The light emitted from the partial discharges was recorded with a streak camera. Light was emitted for less than 20 ns for a positive impulse of 70 kV.
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