نتایج جستجو برای: waveform

تعداد نتایج: 15679  

Journal: :Optometry and vision science : official publication of the American Academy of Optometry 2011
Susana T L Chung Martin W LaFrance Harold E Bedell

PURPOSE In persons with infantile nystagmus (IN), visual acuity correlates with the duration of the foveation period of the nystagmus waveform, i.e., when the retinal image is on or near the fovea and moves with low velocity. In this study, we asked how acuity is affected by the non-foveating phases of the nystagmus waveform, when the velocity of retinal image motion is substantially higher. ...

2011
Jörn Loviscach

Oscilloscope-style waveform plots offer great insight into the properties of the audio signal. However, their use is impeded by the huge spread of timescales extending from fractions of a millisecond to several hours. Hence, waveform plots often require zooming in and out. This work introduces a graphical representation through a synthesized quintessential waveform that shows the spectrum of th...

2007
P. Litkey X. Liang

Interest in full-waveform airborne laser scanning (ALS) data has significantly increased with the release of waveform digitizers by commercial vendors. Despite the recent widespread availability of full-waveform data, the full potential of this type of data has yet to be realised. Some of the most promising applications for waveform data can be found in various fields of forestry, in which ALS ...

Journal: :Circulation 1973
P M Rautaharju S Punsar H Blackburn J Warren A Menotti

Waveform patterns of P, ST and T vector functions of Frank-lead rest and exercise vectorcardiograms (VCG) of 375 ostensibly normal males, aged 50-70 years, were evaluated by waveform vector analysis (WVA). This procedure suitably quantified waveform information, providing a stable reduced data base comprising mean vector (MV), gradient vector (GV), convex vector (CV), sigmoid vector (SV), and q...

2016
Emad A. Awada Mohammad H. Alomari

In evaluating the quality of waveform energy, Total Harmonic Distortion can be one of the unique testing parameters showing the disturbance effect on pure waveform or regenerated waveform. As harmonics may added to distort the fundamental waveform, the analysis of signal dynamic characteristic and the measurement of harmonics effect on the integrity of the waveform will be study to explore and ...

Journal: :JACC: Clinical Electrophysiology 2019

Journal: :IEEE Journal of Selected Topics in Quantum Electronics 2015

2006
Charles Robillard Jonathan Coulombe Patrick Nadeau Mohamad Sawan

Energy efficiency and safety are key issues to accurately stimulate neural tissues. A novel waveform has lately been proposed: the rising exponential waveform; nevertheless, no experimentation has been done using an active model of the membrane in order to validate these results. This paper proposes this analysis using several types of waveforms. The total power consumption, taking into conside...

Journal: :Remote Sensing 2017
Feng Wang Dongkai Yang Weiqiang Li Wei Yang

Spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) has been the research focus of Earth observation because of its unique advantages; however, there are still many challenges to be resolved. The reduction of the impact of the satellite motion on the GNSS-R waveform is the one of key technologies for spaceborne GNSS-R. The proposed delay retracking methods in existing literatur...

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