MIT Scientists Create Camera That Allows Photons To Be Seen Moving In Slow Motion
December 13th, 2011Via: New York Times / MIT News Office:
More than 70 years ago, the M.I.T. electrical engineer Harold (Doc) Edgerton began using strobe lights to create remarkable photographs: a bullet stopped in flight as it pierced an apple, the coronet created by the splash of a drop of milk.
Now scientists at M.I.T.’s Media Lab are using an ultrafast imaging system to capture light itself as it passes through liquids and objects, in effect snapping a picture in less than two-trillionths of a second.
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…the researchers were able to create slow-motion movies, showing what appears to be a bullet of light that moves from one end of the bottle to the other. The pulses of laser light enter through the bottom and travel to the cap, generating a conical shock wave that bounces off the sides of the bottle as the bullet passes.
The streak tube scans and captures light in much the same way a cathode ray tube emits and paints an image on the inside of a computer monitor. Each horizontal line is exposed for just 1.71 picoseconds, or trillionths of a second, Dr. Raskar said — enough time for the laser beam to travel less than half a millimeter through the fluid inside the bottle.
To create a movie of the event, the researchers record about 500 frames in just under a nanosecond, or a billionth of a second. Because each individual movie has a very narrow field of view, they repeat the process a number of times, scanning it vertically to build a complete scene that shows the beam moving from one end of the bottle, bouncing off the cap and then scattering back through the fluid. If a bullet were tracked in the same fashion moving through the same fluid, the resulting movie would last three years.
“You can think of it as slow motion,” Andreas Velten, a postdoctoral researcher who is a member of the design team, said during a recent technical presentation. “It is so much slow motion you can see the light itself move. This is the speed of light: there’s nothing in the universe that moves faster.”
Multimillion Dollar Crowdturfing Industry Growing Exponentially
December 13th, 2011Incredibly, laughably, this piece doesn’t mention things like the U.S. Military’s desire to develop persona management software or Team Themis (HBGary Federal, Palantir and Berico):
After having spent several months studying those emails and otherwise investigating the industry depicted therein, I have revealed my summary of a classified US intelligence programme known as Romas/COIN, as well as its upcoming replacement, known as Odyssey. The programme appears to allow for the large-scale monitoring of social networks by way of such things as natural language processing, semantic analysis, latent semantic indexing and IT intrusion. At the same time, it also entails the dissemination of some unknown degree of information to a given population through a variety of means – without any hint that the actual source is US intelligence.
Via: Technology Review:
A trawl of Chinese crowdsourcing websites—where people can earn a few pennies for small jobs such as labeling images—has uncovered a multimillion-dollar industry that pays hundreds of thousands of people to distort interactions in social networks and to post spam.
The report’s authors, at the University of California, Santa Barbara, also found evidence that crowdsourcing sites in the U.S. are similarly dominated by ethically questionable jobs. They conclude that the rapid growth of this way of making money will make paid shills a serious security problem for websites and those who use them around the world. A paper describing their results is available on the Arxiv pre-print server.
Ben Zhao, an associate professor of computer science at UCSB (and a TR35 winner in 2006), started looking into the largely uncharted crowdsourcing industry in China after working closely with RenRen, a social network that is sometimes called the “Facebook of China,” to track malicious activity on the site. Zhao was intrigued to see a lot of relatively sophisticated attempts to send spam and promote brands by users that appeared to be working with specific agendas.
When he and colleagues investigated the source of that activity, the team was surprised by what it found, says Zhao: “Evil crowdsourcing on a very large scale.” Influencing public opinion with fake “grassroots” activity is known as astroturfing, leading Zhao to coin the term “crowdturfing,” since it is done via large crowdsourcing sites.
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Filippo Menczer, director of the Center for Complex Networks and Systems Research at the University of Indiana, is working to develop systems to detect political astroturfing on Twitter. “It’s already a hard thing to do, and probably it will get more difficult,” he says, especially as crowdsourcing services become easier to use.
Menczer’s group first built a system to detect political astroturfing in the run-up to the most recent midterm elections. It first identifies threads of political discussion circulating on Twitter, using hashtags, links, names, and sentences. Software trained to recognize both legitimate and astroturfing tweets then sifts fraudulent messages from that soup of political discussion, and even tracks their success in influencing real users.
That system was able to find automated accounts by sending carefully varying messages promoting certain political sites. But Menczer has always suspected they were missing an unknown amount of more subtle astroturfing campaigns. Looking at the origin of crowdsourced astroturfing provides another perspective, he says.
“The fact that there are websites almost dedicated to making it easy to hire people to do this is further evidence that this is happening,” says Menczer, who is working to upgrade his astroturfing detection system to analyze discussion around next year’s presidential elections.
Related:
Internet Plague: Paid Shills in Comments
Fracking Industry Executives Suggest Military PSYOP Techniques to Peers for Dealing with Public
FBI Holding Carrier IQ Data for ‘Law Enforcement Purposes’
December 13th, 2011There’s a shocker.
Via: The Verge:
When we spoke to Carrier IQ at length about the company’s controversial cellular tracking service, there was one question we didn’t include in the transcript. “Would you say no if the government asked Carrier IQ for a wiretap into user databases?” we asked. At the time, we felt the question was reaching, but today it seems rather apt, because MuckRock just discovered that the FBI does have files on Carrier IQ of some sort.
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In any case, if you’re curious how Carrier IQ responded to our question, the answer was this: “We will respect the laws of the United States and other territories in which we operate.”
Butter Shortage in Norway: Bids to Roughly $465 Per Pound
December 12th, 2011Via: AFP:
An acute butter shortage in Norway, one of the world’s richest countries, has left people worrying how to bake their Christmas goodies with store shelves emptied and prices through the roof.
The shortfall, expected to last into January, amounts to between 500 and 1,000 tonnes, said Tine, Norway’s main dairy company, while online sellers have offered 500-gramme packs for up to 350 euros ($465).
The dire shortage poses a serious challenge for Norwegians who are trying to finish their traditional Christmas baking — a task which usually requires them to make at least seven different kinds of biscuits.
The shortfall has been blamed on a rainy summer that cut into feed production and therefore dairy output, but also the ballooning popularity of a low-carbohydrate, fat-rich diet that has sent demand for butter soaring.
“Compared to 2010, demand has grown by as much as 30 percent,” Tine spokesman Lars Galtung told AFP.
Last Friday, customs officers stopped a Russian at the Norwegian-Swedish border and seized 90 kilos (198 pounds) of butter stashed in his car.
Internet Piracy Bill: A Free Speech ‘Kill Switch’
December 12th, 2011Via: The Hill:
What began as an attempt to restrain foreign piracy on the Internet has morphed into a domestic “kill switch” on First Amendment freedom in the fastest-growing corner of the marketplace of ideas.
Proposed federal legislation purporting to protect online intellectual property would also impose sweeping new government mandates on internet service providers – a positively Orwellian power grab that would permit the U.S. Justice Department to shut down any internet site it doesn’t like (and cut off its sources of income) on nothing more than a whim.
Under the so-called “Stop Online Piracy Act” (SOPA) the federal government – which is prohibited constitutionally from abridging free speech or depriving its citizens of their property without due process – would engage in both practices on an unprecedented scale. And in establishing the precursor to a taxpayer-funded “thought police,” it would dramatically curtail technology investment and innovation – wreaking havoc on our economy.
Related: Criminalize Linking
Rare Photographs Show Ground Zero of the Drone War
December 12th, 2011Via: Wired:
The epicenter of global terrorism, and the CIA’s highly classified drone war against extremist groups, is a black hole on the map — a region of Pakistan off limits to outsiders, and especially Westerners. It’s an area so dangerous that even the Pakistani military avoids it. The CIA may have launched 70 drone strikes in tribal Pakistan in 2011 alone. But Americans, like the rest of the world, have no idea what the area looks like, or who lives there.
One resident of North Waziristan wants to expose the conflict. Noor Behram has spent years photographing the aftermath of drone strikes, often at personal risk. Working with Islamabad lawyer Shahzad Akbar and London-based human rights activist Clive Stafford Smith, who are helping get his photos to the outside world, Behram provided Danger Room with dozens of his images, none of which have ever been published in the United States.
What follows is a sample of some of the most arresting photos. Be advised: Many of these pictures are disturbing. Some of them show dead children.
Iran to Practice Ability to Close Strait of Hormuz [???]
December 12th, 2011Via: Reuters:
A member of the Iranian parliament’s National Security Committee said on Monday that the military was set to practise its ability to close the Gulf to shipping at the narrow Strait of Hormuz, the most important oil transit channel in the world, but there was no official confirmation.
The legislator, Parviz Sarvari, told the student news agency ISNA: “Soon we will hold a military manoeuvre on how to close the Strait of Hormuz. If the world wants to make the region insecure, we will make the world insecure.”
Contacted by Reuters, a spokesman for the Iranian military declined to comment.
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About a third of all sea-borne shipped oil passed through the Strait in 2009, according to the U.S. Energy Information Administration (EIA), and U.S. warships patrol the area to ensure safe passage.
Most of the crude exported from Saudi Arabia, Iran, the United Arab Emirates, Kuwait and Iraq – together with nearly all the liquefied natural gas from lead exporter Qatar – must slip through a 4-mile (6.4 km) wide shipping channel between Oman and Iran.
Beyond Guantánamo, a Web of Prisons for Terrorism Inmates
December 12th, 2011Via: New York Times:
It is the other Guantánamo, an archipelago of federal prisons that stretches across the country, hidden away on back roads. Today, it houses far more men convicted in terrorism cases than the shrunken population of the prison in Cuba that has generated so much debate.
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As of Oct. 1, the federal Bureau of Prisons reported that it was holding 362 people convicted in terrorism-related cases, 269 with what the bureau calls a connection to international terrorism — up from just 50 in 2000. An additional 93 inmates have a connection to domestic terrorism.
Company Wants to Mine the Moon’s Resources and Leave Trash Behind
December 12th, 2011Via: Los Angeles Times:
Most people don’t take it literally when they’re told to shoot for the moon — but thinking small isn’t Naveen Jain’s way. The 52-year-old Internet entrepreneur is a co-founder of Moon Express Inc., one of several companies in the Google Lunar X Prize competition, in which privately funded teams will try to put robots on the moon by 2016.
Jain’s plans don’t end at reaching the moon’s surface. MoonEx, as his company is also known, plans to make billions mining the moon for precious resources. It also hopes to let customers send messages and materials to the moon.
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We are asking people, “What does the moon mean to you — and would you pay to send something there?”
It’s the best time capsule you could ever find, because nothing gets destroyed there — even the astronauts’ footprints are still there. So would you pay $20 to send a picture of your family? Would you send the DNA of your pet? Would you send your grandfather’s ashes?
Research Credit: noncompliant
British Police to Test Riot Control Laser
December 12th, 2011Via: Telegraph:
A shoulder-mounted laser that emits a blinding wall of light capable of repelling rioters is to be trialled by police under preparations to prevent a repeat of this summer’s looting and arson.
The technology, developed by a former Royal Marine commando, temporarily impairs the vision of anyone who looks towards the source.
It has impressed a division of the Home Office which is testing a new range of devices because of the growing number of violent situations facing the police.
The developer, British-based Photonic Security Systems, hopes to offer the device to shipping companies to deter pirates. Similar devices have been used by ISAF troops in Afghanistan to protect convoys from insurgents.
The laser, resembling a rifle and known as an SMU 100, can dazzle and incapacitate targets up to 500m away with a wall of light up to three metres squared. It costs £25,000 and has an infrared scope to spot looters in poor visibility.
Looking at the intense beam causes a short-lived effect similar to staring at the sun, forcing the target to turn away.
Research Credit: RJF
