Monday, November 12, 2012

Geomapping Racism With Twitter

Geomapping Racism With Twitter:
Hugh Pickens writes writes "Megan Garber writes that in the age of the quantified self, biases are just one more thing that can be measured, analyzed, and publicized. The day after Barack Obama won a second term as president of the United States, a group of geography academics took advantage of the fact that many tweets are geocoded to search Twitter for racism-revealing terms that appeared in the context of tweets that mentioned 'Obama,' 're-elected,' or 'won,' sorting the tweets according to the state they were sent from and comparing the racist tweets to the total number of geocoded tweets coming from that state during the same time period. Their findings? Alabama and Mississippi have the highest measures followed closely by Georgia, Louisiana, and Tennessee forming a fairly distinctive cluster in the southeast. Beyond that cluster North Dakota and Utah both had relatively high scores (3.5 each), as did Missouri, Oregon, and Minnesota. 'These findings support the idea that there are some fairly strong clustering of hate tweets centered in southeastern U.S. which has a much higher rate than the national average,' writes Matthew Zook. 'But lest anyone elsewhere become too complacent, the unfortunate fact is that most states are not immune from this kind of activity. Racist behavior, particularly directed at African Americans in the U.S., is all too easy to find both offline and in information space.'"




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Ballmer says Microsoft Surface RT sales off to 'modest' start

Ballmer says Microsoft Surface RT sales off to 'modest' start:
Microsoft CEO Ballmer braces shareholders for a 'fundamental shift,' more of its own devices in the future
Microsoft's been holding Surface for Windows RT sales figures close to its chest so far, but CEO Steve Ballmer has allowed in an interview with Le Parisien that the much ballyhooed tablet is off to a "modest" start. The bombastic exec gave that appraisal while touting the imminent arrival of the tab's higher-powered sibling, Surface for Windows 8 Pro, though he didn't elaborate further. After all the cake it's no doubt lavished marketing the slate, we'll have to see if the software giant finds the hardware game tough to swallow.
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Ballmer says Microsoft Surface RT sales off to 'modest' start originally appeared on Engadget on Sun, 11 Nov 2012 10:54:00 EDT. Please see our terms for use of feeds.
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Making a better invisibility cloak

Making a better invisibility cloak: The first functional "cloaking" device reported by electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of the same laboratory has developed a new design that ties up one of the major loose ends from the original device.

It's not just what you eat, but when you eat it: Link between fat cell and brain clock molecules shown

It's not just what you eat, but when you eat it: Link between fat cell and brain clock molecules shown: Fat cells store excess energy and signal these levels to the brain. Deletion of the clock gene Arntl, also known as Bmal1, in fat cells, causes mice to become obese, with a shift in the timing of when this nocturnal species normally eats. These findings shed light on the complex causes of obesity in humans.

Using rust and water to store solar energy as hydrogen

Using rust and water to store solar energy as hydrogen: How can solar energy be stored so that it can be available any time, day or night, when the sun shining or not? Scientists are developing a technology that can transform light energy into a clean fuel that has a neutral carbon footprint: hydrogen. The basic ingredients of the recipe are water and metal oxides, such as iron oxide, better known as rust.

Lower-income patients fare better than wealthier after knee replacement

Lower-income patients fare better than wealthier after knee replacement: Patients who make $35,000 a year or less report better outcomes after knee replacement surgery than people who earn more, research shows.

Timing of rehabilitation after total knee replacement surgery may hurt patients’ ability to regain and improve function

Timing of rehabilitation after total knee replacement surgery may hurt patients’ ability to regain and improve function: While more than 900,000 total knee replacement surgeries were performed in the U.S. in 2011 to treat debilitating knee osteoarthritis, the success rate of post-operative functional gains vary widely, according to new research findings.

Weekly soft drink consumption bubbles up knee osteoarthritis; especially in men

Weekly soft drink consumption bubbles up knee osteoarthritis; especially in men: Sugary soft drink consumption contributes not only to weight gain, but also may play a role in the progression of knee osteoarthritis, especially in men, according to new research findings.

X-Ray Laser For Creating Supercharged Particles

X-Ray Laser For Creating Supercharged Particles:
William Robinson writes "Scientists have found way to use X-Ray Lasers to create supercharged particles. The specific tuning of the laser's properties can cause atoms and molecules to resonate. The resonance excites the atoms and causes them to shake off electrons at a rate that otherwise would require higher energies. This could be used to create highly charged plasma."




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Global Warming Felt By Space Junk and Satellites

Global Warming Felt By Space Junk and Satellites:
An anonymous reader writes in with a story about another side effect of increased carbon dioxide in the atmosphere. "Rising carbon dioxide levels at the edge of space are apparently reducing the pull that Earth's atmosphere has on satellites and space junk, researchers say. The findings suggest that man made increases in carbon dioxide might be having effects on the Earth that are larger than expected, scientists added... in the highest reaches of the atmosphere, carbon dioxide can actually have a cooling effect. The main effects of carbon dioxide up there come from its collisions with oxygen atoms. These impacts excite carbon dioxide molecules, making them radiate heat. The density of carbon dioxide is too thin above altitudes of about 30 miles (50 kilometers) for the molecules to recapture this heat. Cooling the upper atmosphere causes it to contract, exerting less drag on satellites."




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NSA Outs Top-Secret Report That Missed the Future of Supercomputing

NSA Outs Top-Secret Report That Missed the Future of Supercomputing: The mid-1990s were dark years for the National Security Agency. Its budget had been slashed, top technical talent was seeping out, and the company that made its supercomputers was in trouble.

You can get a sense of the agency's worry -- and its myopia -- in a top-secret report on the state of supercomputing that the ...