Abstract Dynamic laser speckle and its biological version (biospeckle laser) have been used in many areas of knowledge. Its non-invasive approach allows the application advantage regarding those that need contact or damage analyzed sample. However, one needs sharp adjust image acquiring processing. In this article, we show how variation sampling rate a dynamic analysis affects value indexes con...

In many practical applications of digital signal processing, one is faced with the problem of changing the sampling rate of a signal, either increasing it or decreasing it by some amount. An increase in the sampling rate by an integer factor L can be accomplished by interpolating L-1 new samples between successive values of the signal. The interpolation process can be accomplished in a variety ...

In this paper, a differential cyclic analog-to-digital converter based in switched-capacitor techniques is presented. This approach allows a reduced die size and achieves a higher precision, making this circuit suitable to low speed measurements, such electric energy meter systems where a minimum sampling rate of 1,200 samples per second is required for 2-channel systems (single-phase) and 7,60...

An analogue to digital (AD) converter is described which may be used to transform a multichannel analyser into an analogue signal averager suitable for analysis of analogue signals in the frequency range from DC to typically 40 kHz and signal amplitudes in the millivolt to volt range. The AD converter operates on a triggered basis and is capable of sampling an analogue signal at a maximum rate ...

Objective: To assess the rate and causes of conversion of laparoscopic to open cholecystectomy (OC) in 450 patients who underwent laparoscopic cholecystectomy (LC) by the same surgeon in tertiary care teaching hospitals. Study Design: Descriptive study. Place and Duration of Study: The study was conducted initially at Pakistan Navalship (PNS) Shifa, Karachi and later at Combined Military Hospit...