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Abstract: Analog implementations of digital error control decoders, generally referred to as analog decoding, have recently been proposed as an energy and area competitive methodology. Despite several successful implementations of small analog error control decoders, little is currently known about how this methodology scales to smaller process technologies and copes with the non-idealities of nano-scale transistor sizing. A comprehensive analysis of the potential of sub-threshold analog decoding is examined in this paper. It is shown that mismatch effects dominated by threshold mismatch impose firm lower limits on the sizes of transistors. The effect of various forms of leakage currents is also investigated and minimal leakage current to normalizing currents are found using density evolution and control simulations. Finally, the convergence speed of analog decoders is examined via a density evolution approach. The results are compiled and predictions are given which show that process scaling below 90nm processes brings no advantages, and, in some cases, may even degrade performance or increase required resources. [ABSTRACT FROM AUTHOR]

Acceptance and commitment therapy is a third generation chronic pain therapy. The purpose of this study was to investigate the effectiveness of acceptance and commitment group therapy on catastrophic and disabling pain in chronic pelvic pain in females. This investigation is a randomized clinical trial. Twenty-two (n=22) chronic pelvic pain female patients were selected on the basis of clinical interview in Alzahra and Isfahan Noor Hospitals and were randomly assigned to two experimental and control groups. Acceptance and commitment group therapy was administered to the experimental group in eight 90-minute sessions and the control group did not receive any therapy. Pre-test, post-test and a two months follow-up scores on catastrophic and disabling pain questionnaires were administered to the two groups The result of repeated measures analysis of variance showed that acceptance and commitment group therapy had a significant effect of catastrophic and disabling pain in chronic pelvic pain in female patients in the experimental group as compared to the control group (p<0/05). The difference in the two-month follow-up period remained stable. [ABSTRACT FROM AUTHOR]