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Submission + - One-Laptop-Per-Child application development

Submitted by Anonymous Coward on Sunday December 30, 2007 @12:39PM

An anonymous reader writes: This OLPC (One-Laptop-Per-Child) tutorial teaches you how to develop Python activities for the XO laptop. It covers the ins and outs of Sugar (the XO user interface, or UI) and the details behind activity development. You will also learn about Python programming, Sugar application program interfaces (APIs) for Python, and platform emulation with QEMU. Learn OLPC application development and help the worlds children.

Submission + - How to Reach 200 MPH on Hydrogen Fuel Cells (popularmechanics.com)

Submitted by the_manatee on Friday August 10, 2007 @04:13PM

the_manatee writes: Ford's 999 hydrogen-powered speedster is making waves for its upcoming speed record attempt in the Bonneville Salt Flats, but details on what's actually going on under the hood have been scarce. As it turns out, there are NASCAR-style brakes, steering, and suspension components, along with 16 Ballard Mk902 fuel cells that produce 350 kW of electricity. All that juice spins up a 770-hp motor and the rest is (hopefully) history. One final ingredient: 400 lbs of ice for cooling, which will melt in seconds once the car gets up to speed.

Police Data-Mining Done Right 321

Posted by Zonk on Friday August 10, 2007 @03:33PM from the way-its-supposed-to-be-used dept.

enharmonix writes "Courtesy of Bruce Schneier, it's nice to hear something good about data mining for a change: predicting and stopping crime. For example, police in Redmond, VA, 'started overlaying crime reports with other data, such as weather, traffic, sports events and paydays for large employers. The data was analyzed three times a day and something interesting emerged: Robberies spiked on paydays near cheque cashing storefronts in specific neighbourhoods. Other clusters also became apparent, and pretty soon police were deploying resources in advance and predicting where crime was most likely to occur.'"

Only 25% of Firefox Downloaders Are 'Active Users' 294

Posted by Zonk on Friday August 10, 2007 @02:42PM from the i-account-for-ten-percent-of-that dept.

bheer writes "The Guardian points out a page on the Mozilla wiki noting that 'only 50% of the people downloading Firefox actually try it out, and only a further half of those continue to use it actively.' ZDNet has some commentary on the browser's retention rate. While a 25% retention rate isn't necessarily bad, Mozilla is trying to improve these figures with a 12 point plan that includes more TV and media advertising, a better start page and several installation tweaks."

Journal Journal: Ten Must Have Free Software Packages for 2007

Journal by blue234 on Monday January 01, 2007 @03:53PM

Having worked for Microsoft Corporation for a portion of my career, with stats such as 95% of the world uses Microsoft. I was in for a real eye opener on the number of different software packages available in the Open Source world.I have put together a list of the top top ten free tools for any internet professional. The first five are devoted to your desktop and the next five are for you

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