electrocardiogram (ecg) is one of the most common biological signals which plays a significant role in diagnosis of heart diseases. one of the most important parts of ecg signal processing is interpretation of qrs complex and obtaining its characteristics. r wave is one of the most important sections of this complex which has an essential role in diagnosis of heart rhythm irregularities and als...

pulse-width modulated (pwm) adjustable frequency drives (afds) are extensively used in industries for control of induction motors. it has led to significant advantages in terms of the performance, size, and efficiency but the output voltage waveform no longer remains sinusoidal. hence, overshoots, high rate of rise, harmonics and transients are observed in the voltage wave. they increase voltag...

Achieving peak performance is the primary goal of most athletes. Coaches too, are constantly striving to help their athletes reach their potential and achieve peak performance. Interestingly, although the field of sport psychology has focused almost exclusively on peak performance in athletes, it is a common concern and goal for musicians, actors / performers, academics and business people as w...

I was aware of a need for object-oriented programming long before I learned that it existed. I felt the need because I was using C and Lisp to build mediumsized systems, including a widely-used text editor, CASE and VLSI tools. Stated simply, I wanted flexible connections between providers and consumers of behavior in my systems. For example, in the text editor anything could produce text (file...

In a previous work, we explored zone broadening and the achievable plate numbers in linear drift tube ion mobility-mass spectrometry through developing plate-height model [1]. On basis of these findings, present theoretical study extends by exploring peak-to-peak resolution peak capacity mobility separations. The first part provides critical overview chromatography-influenced equations, includi...

Precisely this pattern is what Welch and Meselson found recently when they took a closer look at more DNA surrounding the hsp82 locus in bdelloids — the same gene that was initially assumed to harbour divergent 'Meselson effect' alleles. It turns out that the regions around the four copies of the hsp82 gene do come in two pairs. Between them, the pairs have four genes in common and the order an...