(a) schematic representation of the two-dimensional electrode array (13 rows Â 5 columns, with one missing electrode at the upper right corner, circular electrodes, 2mm diameter, 8-mm interelectrode distance in both directions) example of a single motor unit action potential (MUAP) detected with the electrode grid during an isometric contraction of the biceps brachii muscle at 20% of the maximal force instantaneous EMG potential maps obtained using bicubic spatial interpolation of the double differential sEMG signals for different time instants during propagation of one MUAP from the innervation zone to the tendon endings. The second part of the manuscript focuses on the sEMG amplifier technology: the front end amplifier characteristics for signal conditioning, the methods for stimulation artifact reduction, filtering methods, safety requirements, and the methods for analog-to-digital conversion of the sEMG signal. Furthermore, the results of a simple simulation are reported, in order to emphasize the effects of the subcutaneous tissue layers and of the detection volume on the recorded sEMG signal. Examples of experimental sEMG signals are provided to show the potential value of high-density sEMG electrode grids and multichannel amplifiers that allow to add spatial information to the temporal information content of the sEMG signal. The first part of the manuscript focuses on the sEMG electrode system technology: the electrode classification, impedance, noise, transfer function, the spatial filtering effect of surface electrode configurations, the effects of electrode geometry, and location on the recorded sEMG signal. Likely the best book I have read since The Everything Store: Jeff Bezos and the Age of Amazon by Brad Stone.The aim of this review is to present the state of the art of the technology of detection and conditioning systems for surface electromyography (sEMG). This book is the first truly comprehensive account of the history of Blackberry and a very solid read. Instead it primarily delivers a thorough account of the business maneuverings that allowed a small Canadian company to become a global player. Losing the Signal is not a cultural analysis of BlackBerry’s effect on the ways we think or behave. RIM was caught off guard by the iPhone and was pressured by Verizon into releasing the Blackberry Storm, a critical flop. Things all changed with the advent of the iPhone, and carriers started investing billions in expanded networks. Vodaphone and others actually bucked about paying Blackberry the service fee for each phone sold, because Blackberry had their own servers to handle pushed email. They actually told them that their internet browser had to be very bones because their networks could not handle the amount of data. Canada, the US and UK were all using EDGE and 2G data connections when RIM first starting releasing phones. You get a strong sense from reading this book on how telecom carriers were totally unprepared for the data revolution. When RIM first taking online orders, their first customer was Michael Dell, of Dell Computers. Businessman would be glued to their device during meetings and people asked what it was. Another interesting fact was that Blackberry has a brand grew fairly organically. What I found especially compelling were the early years of Research and Motion and how US Robotics and other companies tried to withhold paying for orders to financially hurt the company. Sun Tzu,taught him that “you can’t panic. “It is not a friendly world out there,” says Balsillie. Speaking of Balsillie, he revered The Art of War as a kind of spiritual guidebook for a small Ontarian company facing ruthless global competitors. Getting sued by NXP over wireless patents also drove Balsillie to be a manic depressant. Do you know why they left? It primarily had to do with the failings of the Blackberry Storm, post-dating shares to get maximum value and the ensuing legal drama. They got direct access to the two former CEO’s who haven’t done anything in the media since they left the company. They are staff reporters at the Globe and Mail and have been following Blackberry since the very beginning. This book was written by Jacquie McNish and Sean Silcoff. It tells the tale of engineer Mike Lazaridis and businessman Jim Balsillie from their early years in highschool to the formation of RIM, whose first office was above a bagel shop. Losing the Signal – The Spectacular Rise and Fall of BlackBerry came out on Tuesday and this was a book I eagerly anticipating.

The signal state review