Results 281 to 290 of about 3,066,557 (335)
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Applied Energy, 2018
High-speed railways have received much attention globally in recent years. While high-speed railways bring convenience to people, the environmental costs, such as noise pollution, are assignable, especially in residential areas near the railway. Notably,
Y. Wang +7 more
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High-speed railways have received much attention globally in recent years. While high-speed railways bring convenience to people, the environmental costs, such as noise pollution, are assignable, especially in residential areas near the railway. Notably,
Y. Wang +7 more
semanticscholar +1 more source
Europhysics Letters (EPL), 1986
At the nucleation stage of phase transformation, the number of critical nuclei is slowly fluctuating, which should lead to a characteristic, electrically detectable, low-f noise. Observation of this noise, which has a well-defined cut-off would provide an internal kinetic test of classical nucleation models.
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At the nucleation stage of phase transformation, the number of critical nuclei is slowly fluctuating, which should lead to a characteristic, electrically detectable, low-f noise. Observation of this noise, which has a well-defined cut-off would provide an internal kinetic test of classical nucleation models.
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An ultralow noise preamplifier for low frequency noise measurements
Review of Scientific Instruments, 2009Low frequency noise measurements are among the most sensitive tools for the investigation of the quality and of the reliability of semiconductor devices. The sensitivity that can be obtained depends on the background noise of the low noise preamplifier coupled to the device under test (DUT) that, at very low frequencies, is dominated by flicker noise ...
CANNATA', GIANLUCA +2 more
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Journal of Applied Physics, 1970
Variance fluctuations in 1/f noise examined with apparatus capable of responding to zero frequency signals are found to have the same magnitude as those in band-limited 1/f noise signals. The distribution of variances in identical sample lengths is skewed to small values in the case of current noise in a carbon resistor and is symmetrical in the case ...
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Variance fluctuations in 1/f noise examined with apparatus capable of responding to zero frequency signals are found to have the same magnitude as those in band-limited 1/f noise signals. The distribution of variances in identical sample lengths is skewed to small values in the case of current noise in a carbon resistor and is symmetrical in the case ...
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Japanese Journal of Applied Physics, 1990
Low-frequency noise measurements were carried out on GaAs devices in the frequency and temperature ranges from 10 Hz to 100 kHz, and from 77 K to 300 K, respectively. The noise spectra are considered to be superpositions of generation-recombination noise components caused by traps.
Shiyuan Yang +2 more
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Low-frequency noise measurements were carried out on GaAs devices in the frequency and temperature ranges from 10 Hz to 100 kHz, and from 77 K to 300 K, respectively. The noise spectra are considered to be superpositions of generation-recombination noise components caused by traps.
Shiyuan Yang +2 more
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Low-frequency noise around airports
The Journal of the Acoustical Society of America, 1998The sound frequency weighting PNdB has been proposed by Kryter (1959) to assess the noise from jet engine aircrafts. Due to the technical evolution of aircraft engines, and to choose a frequency weighting common to all transport systems, the dB(A-weighted) has begun to be used as the acoustical unit around airports; the PNdB is still used for noise ...
Michel Vallet, Jean Claude Bruyere
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Low-frequency noise spectroscopy
IEEE Transactions on Electron Devices, 1994Electrical noise in excess of thermal and shot noise is caused by imperfections in the device. Its control can improve the quality of the device and its measurement can give considerable information about the nature of the defects involved. For defects with discrete energy distributions spectroscopy can be used to identify the defect and measure its ...
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Radio and Electronic Engineer, 1971
To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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Low-frequency noise in gas sensors: A review
Sensors and Actuators B: Chemical, 2023Wonjun Shin +10 more
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Low frequency airplane noise measurement
The Journal of the Acoustical Society of America, 2008Low frequency airplane noise during takeoff and landing periods is a serious environment hazard. Also, the low frequencies originating from the airplanes could potentially be an easy target for detection. Since there is very little attenuation at the low frequencies, the low frequency sound can propagate to relatively long distances.
Xiao Di +3 more
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