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Election Turnout Statistics In Many Countries: Similarities, Differences, And A Diffusive Field Model For Decision-MakingFirst Map of Universe's Earliest Stars UnveiledMathematicians Solve Minimum Sudoku Problemhttp://arxiv.org/abs/1201.0962 "a capillary infrastructure at the medium and Low Voltage levels"Edison tried low voltage distribution in Manhattan. It was fundamentally uneconomic compared to high voltage central distribution. If First World civilization cannot power itself within encroaching Enviro-whiner Luddite theocracies, lose the Enviro-whiners not civilization.The Physics arXiv Blog produces daily coverage of the best new ideas from an online forum called the Physics arXiv on which scientists post early versions of their latest ideas. [Read the full article] Researchers show that they can make more efficient use of the airwaves than previously thought. But now Congress has to notice.Microsoft has developed a new kind of Wi-Fi network that performs at its top speed even in the face of interference. It takes advantage of a new Wi-Fi standard that uses more of the electromagnetic spectrum, but also hops between the narrow bands of unused spectrum within television broadcast frequencies.In 2008, the U.S. Federal Communications Commission approved limited use of "white spaces"—portions of spectrum adjacent to existing television transmissions. The ruling, in effect, expanded the available spectrum. Microsoft developed the new network partly as a way to push Congress to allow much broader use of white spaces, despite some concerns over interference with some other types of wireless devices, such as wireless microphones. [Read the full article] Researchers at Samsung have developed a smart phone that can detect people's emotions. Rather than relying on specialized sensors or cameras, the phone infers a user's emotional state based on how he's using the phone.For example, it monitors certain inputs, such as the speed at which a user types, how often the "backspace" or "special symbol" buttons are pressed, and how much the device shakes. These measures let the phone postulate whether the user is happy, sad, surprised, fearful, angry, or disgusted, says Hosub Lee, a researcher with Samsung Electronics and the Samsung Advanced Institute of Technology's Intelligence Group, in South Korea. Lee led the work on the new system. He says that such inputs may seem to have little to do with emotions, but there are subtle correlations between these behaviors and one's mental state, which the software's machine-learning algorithms can detect with an accuracy of 67.5 percent. [Read the full article] 
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