Slashdot is powered by your submissions, so send in your scoop

 



Forgot your password?
typodupeerror
Ubuntu

+ - Ubuntu: Pay what you think->

Submitted by major_lima
major_lima (2485024) writes "When a typical user downloads Ubuntu for free and installs it on a computer with a Windows license that the user did pay for, Canonical gets nothing in the form of payment. There's nothing wrong with that—this is the open source world, after all, and many people contribute to Ubuntu with code rather than money. But starting this week, Canonical is presenting desktop OS downloaders with an optional donation form... Once you donate, the Ubuntu desktop starts downloading. Or, you can just skip the donation and download the OS for free, just as you always could. For some reason, the donation page is not presented to Ubuntu Server users."
Link to Original Source
Science

+ - Elephant Hair Acts as Pin Fins for Cooling-> 1

Submitted by derekmead
derekmead (2466858) writes "A new paper from Conor Myhrvold, Howard Stone, and Elie Bou-Zeid of Princeton, published in PLoS One, shows that elephants’ sparse hair actually acts as pin-shaped cooling fins, which helps the giant animals dissipate heat more effectively. The hair works by creating more area for heat to be released, while also also pushing heat away from the animal’s body where wind flow is less impeded.

The team calculated the heat transfer coefficients for measured values of elephants’ smooth skin (around ears, for example) and rough skin (on the legs), both with and without hair. They found that, at high wind speeds, the convection effect of the wind overpowered any surface differences. But at low wind speeds, when convection effects are lower and elephants have more trouble shedding heat, the team found that hair acted as pin-shaped cooling fins, which increased convection cooling efficiency by as much as 24 percent. For elephants dealing with huge thermal loads, that’s an important difference."

Link to Original Source
Government

+ - What are grand technology and scientific challenges for the 21st century?-> 1

Submitted by
coondoggie
coondoggie writes "What are the next Big Things in science and technology? Teleportation? Unlimited clean Energy? The scientists and researchers at DARPA and the White House Office of Science and Technology Policy put out a public call this week for ideas that could form what they call the Grand Challenges — ambitious yet achievable goals that that would herald serious breakthroughs in science and technology."
Link to Original Source
Music

+ - Geographic flow of music->

Submitted by
major_lima
major_lima writes "Researchers map the geographic flow of music and rank various cities around the world according to music listening habbits. Article abstract: The social media website last.fm provides a detailed snapshot of what its users in hundreds of cities listen to each week. After suitably normalizing this data, we use it to test three hypotheses related to the geographic flow of music. The first is that although many of the most popular artists are listened to around the world, music preferences are closely related to nationality, language, and geographic location. We find support for this hypothesis, with a couple of minor, yet interesting, exceptions. Our second hypothesis is that some cities are consistently early adopters of new music (and early to snub stale music). To test this hypothesis, we adapt a method previously used to detect the leadership networks present in flocks of birds. We find empirical support for the claim that a similar leadership network exists among cities, and this finding is the main contribution of the paper. Finally, we test the hypothesis that large cities tend to be ahead of smaller cities-we find only weak support for this hypothesis."
Link to Original Source
XBox (Games)

+ - Xbox Live users suffering hacked accounts, FIFA 11->

Submitted by tomstockmail
tomstockmail (2056752) writes "Ars Technica has received a number of reports from Xbox Live customers complaining about hacked accounts, unauthorized purchases, and a slow response from Microsoft itself. The pattern is weirdly specific: gamers notice that unauthorized purchases have been made using their credit card information or existing points, and FIFA Soccer 11 or 12 has been played on their account.

Update: Microsoft has sent us the following statement:

“We do not have any evidence the Xbox LIVE service has been compromised. We take the security of our service seriously and work on an ongoing basis to improve it against evolving threats. However, a limited number of members have contacted us regarding unauthorized access to their accounts by outside individuals. We are working with our impacted members directly to resolve any unauthorized changes to their accounts. As always, we highly recommend our members follow the Xbox LIVE Account Security guidance provided at www.xbox.com/security to protect your account."

A thread on Reddit has a few unreliable confirmations:
http://www.reddit.com/r/gaming/comments/lc1jf/xbox_live_users_suffering_hacked_accounts_fifa_11/"

Link to Original Source

+ - FTL neutrino problem may have been solved->

Submitted by major_lima
major_lima (2485024) writes "It appears the faster-than-light neutrino problem from the OPERA experiment may have been solved. Roland van Elburg from the University of Groningen shown a simple calculation using Special Relativity to explain the 60ns neutrino travel time discrepancy. Once the fact that the clocks, in this case the GPS satellites, are moving into account an additional correction of around 64ns has to be made, which eliminates the faster-than-light travel times."
Link to Original Source
Google

+ - Google Buzz buzzing away.->

Submitted by
MrCrassic
MrCrassic writes "It looks like the glory days of Google Buzz have finally come to an end. Google has formally announced the termination of this service to concentrate their efforts on Google+. From the article:

In a few weeks we’ll shut down Google Buzz and the Buzz API, and focus instead on Google+. While people obviously won't be able to create new posts after that, they will be able to view their existing content on their Google Profile, and download it using Google Takeout.

Other products, such as the Google Labs website (http://labs.google.com) and Jaiku, will also be on the chopping block. Makes you wonder."
Link to Original Source

+ - Satire of TSA to become illegal-> 3

Submitted by jdastrup
jdastrup (1075795) writes "Another example of satire and free speech becoming illegal in the US. From the story; "any colorable imitation of such words or initials, or the likeness of a Transportation Security Administration ... badge, logo, or insignia on any item of apparel, in connection with any advertisement, circular, book, pamphlet, software, or other publication, or with any play, motion picture, broadcast, telecast, or other production" would be punishable."
Link to Original Source

+ - Spotify has changed it's privacy policy->

Submitted by Anonymous Coward
An anonymous reader writes "The Spotify Service can be accessed (i) as an ad-supported free-to-the-user service having no monthly cap on listening hours or a cap on number of plays of a unique track during the first 6 months following creation of your Spotify account but thereafter a cap of 10 listening hours per month and a cap of 5 plays per unique track (the “Free Service”),"
Link to Original Source

+ - Solar variability helps explain cold winters->

Submitted by Layzej
Layzej (1976930) writes "Research from the Met Office has shed new light on a link between decadal solar variability and winter climate in the UK, northern Europe and parts of America. In years of low UV activity unusually cold air forms over the tropics in the stratosphere, about 50km up. This is balanced by more easterly flow of air over the mid latitudes — a pattern which then 'burrows' its way down to the surface, bringing easterly winds and cold winters to northern Europe. When solar UV output is higher than usual, the opposite occurs and there are strong westerlies which bring warm air and hence milder winters to Europe.

Sarah Ineson, who performed the experiments, said: "What we're seeing is UV levels affecting the distribution of air masses around the Atlantic basin. This causes a redistribution of heat — so while Europe and the US may be cooler, Canada and the Mediterranean will be warmer, and there is little direct impact on global temperatures.""

Link to Original Source

Chemist who falls in acid is absorbed in work.

Working...