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Submission + - Computers are evil in early education (nytimes.com) 2

nbauman writes: Middle school students who got computers did worse in school. They wasted their time on games, social media, and entertainment (just like adults), according to Susan Pinker in the New York Times. http://www.nytimes.com/2015/01... Computers only help when they're used by good, trained teachers. Infants who interact with parents do better in school. Screen time reduces interaction with parents.

In the early 2000s, economists tracked the academic progress of nearly one million disadvantaged middle-school students against the dates they were given networked computers. They assessed math and reading skills for 5 years.

“Students who gain access to a home computer between the 5th and 8th grades tend to witness a persistent decline in reading and math scores,” they wrote. The Internet was also linked to lower grades in younger children.

Weaker students (boys, African-Americans) were affected more than others. When their computers arrived, their reading scores fell off a cliff.

Technology has a role in education — but only when it’s perfectly suited to the task, and only when it's deployed as a tool by a terrific, highly trained teacher.

Submission + - Mozilla dusts off old servers, lights up Tor relays (theregister.co.uk)

TechCurmudgeon writes: According to The Register:

Mozilla has given the Tor network a capacity kick with the launch of 14 relays that will help distribute user traffic. Engineers working under the Foundation's Polaris Project inked in November pulled Mozilla's spare and decommissioned hardware out of the cupboard for dedicated use in the Tor network. It included a pair of Juniper EX4200 switches and three HP SL170zG6 (48GB ram, 2*Xeon L5640, 2*1Gbps NIC) servers, along with a dedicated existing IP transit provider (2 X 10Gbps). French Mozilla engineer Arzhel Younsi (@xionoxfr) said its network was designed to fall no lower than half of its network capacity in the event of maintenance or failure.

The Polaris initiative was a effort of Mozilla, the Tor Project and the Centre for Democracy and Technology to help build more privacy controls into technology.

Submission + - A mattrass adjusts ambiance, starts coffeemaker, when you wake-up (independent.co.uk) 1

mi writes: A smart mattress-cover will turn off lights when you go to sleep, get coffee ready when you’re waking up. Luna’s new device fits around the mattress like a cover, and monitors whether those sleeping on it are asleep. When it senses that they are, it can power down lights or change heating settings. And when it detects that they’re waking back up, it can start brewing coffee or turn the lights back on.

And while you’re asleep, it will track the room temperature and how much sleep you get, creating the perfect conditions. The bed has “dual zone temperature”, which means that it can monitor differnet sides of the bed separately.

The only disturbing piece about it comes at the very end of the article:

Data is stored on the smart mattress cover itself, and then sent to Luna for storage and analysis.


Comment Why not a gradually-degrading array instead? (Score 1) 258

Our conclusion is that having N(N + 1)/2 spare disks is more than enough to achieve a 99.999 percent probability of not losing data over four years.

Instead of keeping the spares inside as just that — spares — can it not start using all of them (in a sufficiently redundant configuration) and gradually lose capacity as physical disks fail?

Yes, it would require coordination with the driver and filesystem, but there is nothing insurmountable in that...

Comment Re:Praise the non-violent (Score 1) 378

It *is* nonviolent.

Sure. It is also "quiet" and "stealthy" — and a bunch of other things. Which is the best term to use in this context? That depends on the subtle connotations of each one, does not it? I am willing to believe, TFA's use was an honest mistake — the article makes no (other) suggestions, bank-robbing (violent or otherwise) may be a just thing. But...

Are the Somali pirates just that — pirates — or are they hard-working folks laboring in a harsh environment, risking their lives directing foreign aid to their impoverished country and the people, who need it most?

See also "Hezbollization".

Submission + - New Study Says Governments Should Ditch Reliance on Biofuels

HughPickens.com writes: The NYT reports on a new study from a prominent environmental think tank that concludes that turning plant matter into liquid fuel or electricity is so inefficient that the approach is unlikely ever to supply a substantial fraction of global energy demand and that continuing to pursue this strategy is likely to use up vast tracts of fertile land that could be devoted to helping feed the world’s growing population. “I would say that many of the claims for biofuels have been dramatically exaggerated,” says Andrew Steer, president of the World Resources Institute, a global research organization based in Washington that is publishing the report. “There are other, more effective routes to get to a low-carbon world.” The report follows several years of rising concern among scientists about biofuel policies in the United States and Europe, and is the strongest call yet by the World Resources Institute, known for nonpartisan analysis of environmental issues, to urge governments to reconsider those policies.

Timothy D. Searchinger says that recent science has challenged some of the assumptions underpinning many of the pro-biofuel policies that have often failed to consider the opportunity cost of using land to produce plants for biofuel. According to Searchinger if forests or grasses were grown instead of biofuels, that would pull carbon dioxide out of the air, storing it in tree trunks and soils and offsetting emissions more effectively than biofuels would do. What is more, as costs for wind and solar power have plummeted over the past decade, and the new report points out that for a given amount of land, solar panels are at least 50 times more efficient than biofuels at capturing the energy of sunlight in a useful form. “It’s true that our first-generation biofuels have not lived up to their promise,” says Jason Hill said. “We’ve found they do not offer the environmental benefits they were purported to have, and they have a substantial negative impact on the food system.”

Comment Praise the non-violent (Score 1) 378

stealing cards remains an effective, nonviolent way to get at the cash in an ATM.

Wow, that makes it sound like the card-thieves are nice folks — see, they are "nonviolent". Almost like the "unarmed" we read so much about recently.

What a way to turn a phrase and alter connotations — pick a nice-sounding synonym of many. Khmm, "quiet"? Neah... "Stealthy"? No... "Nonviolent" — yeah, that's it!!

Comment Re:jessh (Score 1) 397

You know you have a fair well-reasoned argument though the little quip at the end just comes across as childish.

Your victory is not complete, until you've peed on the opponent's unmoving body...

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