Another system of modulation switches the carrier on and off in pulses, the duration or position of the pulse being determined by the information signal.
These pulses are parameterised in terms of their amplitude, duration and position in time across a large number of spectral channels.
Process parameters like pulse energy, pulse repetition rate, pulse duration, focal position, nozzle standoff, type of gas and gas pressure of the assist gas are known to significantly influence hole quality during laser drilling.
Our simulation results show that for a 0.1- to 0.2-s pulse duration, a position error of less than 300 m will not affect the imaging result significantly [details are given in Yi et al. (2017)].
The complete disk specimens were prepared on PC board to measure their dynamic properties, such as reflectivity, jitter and modulation (dynamic tester); and to examine the effects of laser pulse duration time, position and thickness of Sb2Te3 layer on static reflectivity of the disk (static tester), where Avrami coefficient 'q' in J-M-A rate equation can be derived.
Until the mind sets the scaffolding of things in place, they can't be thought of as having any real existence -- neither duration nor position in space.
Further RCTs are needed to determine optimal intensity, frequency, duration and position of vibroacoustic stimulation, as well as efficacy, predictive reliability, safety (in terms of fetal hearing impairment and neurological development) and perinatal outcome.
Significant Determinants found were history of still birth, history of successful VBAC, past indication of past C/S, presence of meconium, cervical dilatation at admission, rupture of membrane at admission and its duration and position of the presenting part.
