By Unknown Lamer from Slashdot's man-is-obsolete department
writes with this excerpt from an Extreme Tech article: "With 400 transistors and standard CMOS manufacturing techniques, a group of MIT researchers have created the first computer chip that mimics the analog, ion-based communication in a synapse between two neurons. Scientists and engineers have tried to fashion brain-like neural networks before, but transistor-transistor logic is fundamentally digital — and the brain is completely analog. Neurons do not suddenly flip from '0' to '1' — they can occupy an almost-infinite scale of analog, in-between values. You can approximate the analog function of synapses by using fuzzy logic (and by ladling on more processors), but that approach only goes so far. MIT's chip is dedicated to modeling every biological caveat in a single synapse. 'We now have a way to capture each and every ionic process that's going on in a neuron,' says Chi-Sang Poon, an MIT researcher who worked on the project. The next step? Scaling up the number of synapses and building specific parts of the brain, such as our visual processing or motor control systems. The long-term goal would be to provide bionic components that augment or replace parts of the human physiology, perhaps in blind or crippled people — and, of course, artificial intelligence. With current state-of-the-art technology it takes hours or days to simulate a simple brain circuit. With MIT's brain chip, the simulation is faster than the biological system itself."Read Replies (0)
By timothy from Slashdot's easy-use-means-more-users department
An anonymous reader writes "While there has been a port of Tor for jailbroken iOS devices for a long time, there was no way to use it if you did not want to lose your warranty. Now it looks like Apple has approved a Web browser for the iPad called Covert Browser, which includes a Tor client. If you look at the first screenshot on the author's page it looks like you can even select the Exit node. According to App Shopper it already hit place 64 in the iPad/Utilites category."
And from another (of course) anonymous reader comes a link to CmdrTaco's take
on another instance of Tor breaking into the world of "real users." As he notes, the Tor Cloud Project
has posted simple instructions for installing EC2 Tor nodes using free-tier VMs (or paid nodes for roughly $30/month).Read Replies (0)