The past 25 years have seen enormous progress in the deciphering of the genetic and molecular basis of ataxias, resulting in improved understanding of their pathogenesis. The most significant milestones during this period were the cloning of the genes associated with the common spinocerebellar ataxias, ataxia telangiectasia, and Friedreich ataxia. To date, the causative mutations of more than 3...

The cooperative relay channel is a recent model for the exploitation of the spatial channel. One user node relays information from the source to the destination which in turn improves the error rate performance due the multiple receive copies i.e. diversity gain. The foundation for any investigation of cooperative diversity channels is based on an accurate and reliable simulation environment. T...

This is a year of milestones: The National Heart, Lung, and Blood Institute and the American Heart Association have reached the half-century mark. The famous Framingham Heart Study began in 1948. And 50 years ago, Michael Ellis DeBakey, MD, came to a fledgling medical school shakily poised in the subtropical boomtown that was Houston, Tex. This year, Dr DeBakey celebrates not only that annivers...