In this work the performance of a wavelength division multiple access (WDMA) system with direct detection receiver is investigated. For this purpose, the probability of error in a WDMA network with OOK modulation considering crosstalk, ISI, photo detector noise and thermal noise is calculated and the effect of each on system performance is investigated. The system performance in presence of PIN...

BACKGROUND Cardiac cells display rate-dependent beat-to-beat variations in action-potential duration (APD), action potential amplitude (APA), and excitability during periodic stimulation. We hypothesized that quinidine causes a marked increase in the variability of APD, APA, and excitability of ventricular cells isolated from quinidine-toxic, arrhythmic ventricles. METHODS AND RESULTS Action ...

BACKGROUND Automated peritoneal dialysis (APD) is widely recommended for the management of high transporters by the International Society of Peritoneal Dialysis (ISPD), although there have been no adequate studies to date comparing the outcomes of APD and continuous ambulatory peritoneal dialysis (CAPD) in this high risk group. METHODS The relative impact of APD versus CAPD on patient and tec...

BACKGROUND Action potential duration (APD) variation is an important determinant of wave break and reentry. The determinants of APD variability during early ventricular fibrillation (VF) in myopathic human hearts have not been studied. The objective of this study was to study the role of APD restitution and short-term cardiac memory on variation in human VF. METHODS AND RESULTS The study cons...

Measures of attention have been found to correlate with specific auditory processing tests in samples of children suspected of Auditory Processing Disorder (APD), but these relationships have not been adequately investigated. Despite evidence linking auditory attention and deficits/symptoms of APD, measures of attention are not routinely used in APD diagnostic protocols. The aim of the study wa...

The increased availability of sophisticated automated peritoneal dialysis (APD) machines has made the choice of APD much more attractive to many patients and nephrologists. However, the cost of APD consumables still generally makes this option more expensive than many existing continuous ambulatory peritoneal dialysis (CAPD) systems. Reusing the tubing and cassette for APD machines (APD with re...

People with auditory processing disorders(APD) do not exactly understand what they hear with normal hearing levels because of difficulties in the processing of auditory information in auditory nervous system. The purposes of this study are to investigate intervention strategies suggested by current literatures and to develop a guide map for APD intervention. The problem based intervention strat...

Results Compared with paroxysmal AF, patients with persistent AF had shorter left atrial APD and effective refractory period (p 0.01). In paroxysmal AF, maximum left atrial APD restitution slope was 1.5 0.4; and 12 of 13 patients had slope 1 (p 0.001). In persistent AF, PACs encountered prolonged activation for a wider range of beats than in paroxysmal AF (p 0.01), which prolonged DI and flatte...