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POPSHow Computers boot up This extensive 3-part post focuses on the linux booting process, from motherboard & chipset to the bootloader & kernel booting process.
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POPSOpen Source Data Recovery Tools An overview of some software & live discs . See source for a decent overview and review. I'm going to explore various ways you can use open source solutions to recover data, bring dead systems back to life, and save your bacon in general. Many of the solutions described here run cross-platform (Lin/Win/Mac), but some of them are *NIX-only and will be described as such.
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POPSThe Nehalem Preview: Intel Does It Again ]... for a 20 - 50% increase in performance, total system power consumption only went up by 10%. ... Final Words: First keep in mind that these performance numbers are early, and they were run on a partly crippled, very early platform. With that preface, the fact that Nehalem is still able to post these 20 - 50% performance gains says only one thing about Intel's tick-tock cadence: they did it. We've been told to expect a 20 - 30% overall advantage over Penryn and it looks like Intel is on track to delivering just that in Q4. At 2.66GHz, Nehalem is already faster than the fastest 3.2GHz Penryns on the market today. At 3.2GHz, I'd feel comfortable calling it baby Skulltrail in all but the most heavily threaded benchmarks. This thing is fast and this is on a very early platform, keep in mind that Nehalem doesn't launch until Q4 of this year.
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POPSQuantum Computing Day 1: Introduction to Quantum Computing (GoogleTechTalk) ... This first talk of the series introduces the basic concepts of quantum computing. We start by looking at the difference in describing a classical and a quantum mechanical system. The talk discusses the Turing machine in quantum mechanical terms and introduces the notion of a qubit. We study the gate model of quantum computing and look at the famous quantum algorithms of Deutsch, Grover and Shor. Finally we talk about decoherence and how it destroys superposition states which is the main obstacle to building large scale quantum computers. We clarify widely held misconceptions about decoherence and explain that environmental interaction tends to choose a basis in state space in which the system decoheres while leaving coherences in other coordinate systems intact. Speaker: Hartmut Neven -- Day 2
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POPSFaster Chips Are Leaving Programmers in Their Dust
He envisions modern chips that will increasingly resemble musical orchestras. Rather than having tiled arrays of identical processors, the microprocessor of the future will include many different computing cores, each built to solve a specific type of problem. In the future, Mr. Mundie said, parallel software will take on tasks that make the computer increasingly act as an intelligent personal assistant. “My machine overnight could process my in-box, analyze which ones were probably the most important, but it could go a step further,” he said. “It could interpret some of them, it could look at whether I’ve ever corresponded with these people, it could determine the semantic context, it could draft three possible replies. And when I came in in the morning, it would say, hey, I looked at these messages, these are the ones you probably care about, you probably want to do this for these guys, and just click yes and I’ll finish the appointment.”
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POPSOn The Origin of Internet a panel discussion with recollections and perspectives from Vint Cerf, Robert Kahn, Don Nielson and other key pioneers and luminaries involved.
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POPSThe Real Computer Revolution Hasn't Happened Yet ...But I would much rather talk about future possibilities, and so I wrote a few historical notes to provide some context for the 1975 paper, and now can try to discuss some of the more important, and mostly hidden, gifts that personal computing networked together around the world can bring to humanity. Our thought was: but if we can get the children to learn the real thing then in a few generations the big change will happen. 32 years later the technologies that our research community invented are in general use by more than a billion people, and we have gradually learned how to teach children the real thing. But it looks as though the actual revolution will take longer than our optimism suggested, largely because the commercial and educational interests in the old media and modes of thought have frozen personal computing pretty much at the “imitation of paper, recordings, film and TV” level.
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POPSVarying Environments Can Speed Up Evolution Using computer simulations, we find that evolution toward goals that change over time can, in certain cases, dramatically speed up evolution compared with evolution toward a fixed goal. The highest speedup is found under modularly varying goals, in which goals change over time such that each new goal shares some of the subproblems with the previous goal. The speedup increases with the complexity of the goal: the harder the problem, the larger the speedup. Modularly varying goals seem to push populations away from local fitness maxima, and guide them toward evolvable and modular solutions. This study suggests that varying environments might significantly contribute to the speed of natural evolution.
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POPSZonbu: A $100 Green PC that charges a monthly fee the 15-watt PC can save up to $10 a month in electricity compared with a standard 200-watt PC “The market we want to target is the second PC in the home,” Mr. Gentil said. “If you want to give a PC to your kids or put it in the kitchen, this is a good candidate.” More @: http://www.zonbu.com/learn/ http://www.youtube.com/watch?v=FT1CJd7jFo0
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POPSTedTalks: Brain Science About to Fundamentally Change Computing (Jeff Hawkins, 2003) To date, there hasn't been an overarching theory of how the human brain really works, Jeff Hawkins argues in this compelling talk. That's because we still haven't defined intelligence accurately. But one thing's for sure, he says: The brain isn't like a powerful computer processor. It's more like a memory system that records everything we experience and helps us predict, intelligently, what will happen next. Bringing this new brain science to computer devices will enable powerful new applications -- and it will happen sooner than you think.
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