Nanoparticles can signal onset of Alzheimer’s

2017 ◽  
Author(s):  
Biplab Das
Keyword(s):  
Signal Onset

Binaural Fusion: Its Limits as Defined by Signal Duration and Signal Onset

1970 ◽  
Vol 47 (2B) ◽  
pp. 565-568 ◽  
Author(s):  
David R. Perrott ◽  
Renee Briggs ◽  
Sharon Perrott
Keyword(s):  
Signal Duration ◽  
Signal Onset

Operant Response in Infants as a Function of Time Interval Following Signal Onset

1992 ◽  
Vol 35 (6) ◽  
pp. 1422-1425 ◽  
Author(s):  
Michael A. Primus
Keyword(s):  
Acoustic Signal ◽  
Operant Response ◽  
Time Interval ◽  
Trial Duration ◽  
Response Latencies ◽  
Signal Onset ◽  
Response Performance ◽  
Several Intervals ◽  
Operant Procedure ◽  
Extended Trial

This study investigated the hypothesis that estimates of infant auditory threshold are lowered by extending the duration of individual test trials such that infants have more time to detect and respond to the acoustic signal. Forty 8- and 12-month-old infants were evaluated with an operant procedure to determine response latencies at four near-threshold levels. Resulting data were used to estimate the effect of trial duration on threshold by calculating the response performance that occurred at several intervals following signal onset. Findings indicate that most detection responses occurred in the initial 4 sec of the test trial, and use of an 8-sec trial interval yielded little gain in performance. The data reflect an insignificant shift (<5.0 dB) in threshold as a function of extended trial intervals.

Signal onset and task variables in auditory evoked potentials

1976 ◽  
Vol 4 (3) ◽  
pp. 197-205 ◽  
Author(s):  
Lloyd F. Elfner ◽  
David J. Gustafson ◽  
Kendrick N. Williams
Keyword(s):  
Evoked Potentials ◽  
Auditory Evoked Potentials ◽  
Signal Onset ◽  
Task Variables ◽  
And Task

scholarly journals Oxidized quinones signal onset of darkness directly to the cyanobacterial circadian oscillator

2012 ◽  
Vol 109 (44) ◽  
pp. 17765-17769 ◽  
Author(s):  
Y.-I. Kim ◽  
D. J. Vinyard ◽  
G. M. Ananyev ◽  
G. C. Dismukes ◽  
S. S. Golden
Keyword(s):  
Circadian Oscillator ◽  
Signal Onset

scholarly journals Reaction time to tones in tonal backgrounds and a comparison of reaction time to signal onset and offset

1976 ◽  
Vol 20 (3) ◽  
pp. 210-214 ◽  
Author(s):  
David S. Emmerich ◽  
Leslie J. Pitchford ◽  
Curtis A. Becker
Keyword(s):  
Reaction Time ◽  
Signal Onset

Rôle of Signal Onset in Sound Localization

1969 ◽  
Vol 45 (2) ◽  
pp. 436-445 ◽  
Author(s):  
David R. Perrott
Keyword(s):  
Sound Localization ◽  
Signal Onset

Correction to "Automatic earthquake signal onset picking based on the continuous wavelet transform" [May 13 2666-2674]

2013 ◽  
Vol 51 (5) ◽  
pp. 2899-2899
Author(s):  
Nasim Karamzadeh ◽  
Gholam Javan Doloei ◽  
Ali M. Reza
Keyword(s):  
Wavelet Transform ◽  
Continuous Wavelet Transform ◽  
Continuous Wavelet ◽  
Signal Onset

scholarly journals Estimation of Avalanche Development and Frontal Velocities Based on the Spectrogram of the Seismic Signals Generated at the Vallée de la Sionne Test Site

Geosciences ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 113 ◽  
Author(s):  
Emma Suriñach ◽  
Elsa Leticia Flores-Márquez ◽  
Pere Roig-Lafon ◽  
Glòria Furdada ◽  
Mar Tapia
Keyword(s):  
Doppler Radar ◽  
Test Site ◽  
Polar Coordinates ◽  
Measured Signal ◽  
Seismic Signals ◽  
Snow Avalanches ◽  
Signal Onset ◽  
Theoretical Function ◽  
Wet Snow ◽  
Radar Measurements

The changes in the seismic signals generated by avalanches recorded at three sites along a path at the Vallée de la Sionne (VdlS) experimental site are presented. We discuss and correlate the differences in the duration, signal amplitudes, and frequency content of the sections (Signal ONset (ON), Signal Body (SBO), and Signal TAil and Signal ENd STA-SEN) of the spectrograms with the evolution of the powder, transitional and wet snow avalanches along a path. The development of the avalanche front was quantified using the exponential function in time F (t) = K’ exp (β t) fitted to the shape of the signal ONset (SON section of the spectrogram. The speed of the avalanche front is contained in β. To this end, a new method was developed. The three seismic components were converted into one seismic component (FS), when expressing the vector in polar coordinates. We linked the theoretical function of the shape of the FS-SON section of the spectrogram to the numerical coefficients of its shape after considering the spectrogram as an image. This allowed us to obtain the coefficients K’ and β. For this purpose, the Hough Transform (HT) was applied to the image. The values of the resulting coefficients K’ and β are included in different ranges in accordance with the three types of avalanche. Curves created with these coefficients enable us to estimate the development of the different avalanche types along the path. Our results show the feasibility of classifying the type of avalanche through these coefficients. Average speeds of the avalanches approaching the recording sites were estimated. The speed values of wet and transitional avalanches are consistent with those derived from GEODAR (GEOphysical Doppler radAR) measurements, when available. The absence of agreement in the speed values obtained from seismic signals and GEODAR measurements for powder snow avalanches indicates, for this type of avalanche, a different source of the measured signal. Hence, the use of the two measuring systems proves to be complementary.

Analytical Evaluation of Warning Onset Rules for Lane Change Crash Avoidance Systems

1997 ◽  
Vol 41 (2) ◽  
pp. 949-953 ◽  
Author(s):  
Louis Tijerina ◽  
Shannon Hetrick
Keyword(s):  
Blind Spot ◽  
Separation Distance ◽  
Lane Change ◽  
Lateral Separation ◽  
Turn Signal ◽  
Signal Onset ◽  
Crash Avoidance ◽  
The Subject ◽  
Minimum Separation ◽  
Cas A

This study assessed the potential effectiveness of two warning onset rules for lane change Crash Avoidance Systems (CAS). A minimum-separation rule triggers a driver warning whenever the Subject Vehicle (SV) and Principal Other Vehicle (POV) are within some minimum lateral separation distance. A turn-signal onset rule triggers a driver warning when the driver activates the turn signal indicator and there is a vehicle in the blind spot. A software program to simulate lane change crashes determined the maximum time available for driver surprise reaction time to the warning and estimated the proportion of crashes avoided with each warning rule. Results indicate that the minimum separation rule is unlikely to be effective for lane change crash avoidance but may help prevent lane-drift-related crashes. The turn-signal onset rule will likely be effective for drivers who use their turn signals but is not free of nuisance alarm problems. Recommendations for lane change CAS research and development are provided.

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