Study: Facebook users sharing more personal info despite increased privacy concerns

Study Facebook users sharing more personal info despite increased privacy concerns

Carnegie Mellon University conducted a study following more than 5,000 Facebook users over six years, from 2005 and 2011, and found that changes in the social network’s privacy policies caused users to share more — not less — personal data. Lest you think this means that users suddenly trusted the site more, Carnegie Mellon says that Facebookers became more and more protective of their personal details as the social network grew in membership — and that the uptick in shared information is a result of increasingly granular privacy settings. If you recall, Facebook introduced new in-depth privacy controls in 2010, and the study found that the release of these new settings corresponded to users sharing more personal data, both within their network of friends and with strangers and third-party applications.

It’s been quite some time since the new privacy policy was introduced, but the university says the sample group didn’t reduce the amount of info shared with non-friends on the network, even as of 2011. The takeaway? Well, it’s safe to say that more privacy controls doesn’t equal more vigilance in protecting personal data, and it’s certainly not a stretch to call Facebook’s settings confusing. The researchers’ comparison of the struggle for privacy to the eternal plight of Sisyphus? That might be a touch more dramatic.

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Via: Huffington Post

Source: Journal of Privacy and Confidentiality

Visualized: First photo using ISS-mounted ISERV Pathfinder zooms in on Panama

DNP Visualized First photo from ISSinstalled ISERV Pathfinder

It’s been a while since we last heard of the ISERV Pathfinder, an imaging instrument that consists of a camera, telescope and pointing system that was sent up to the International Space Station last July. Now it appears it’s safely installed inside the Destiny module on the ISS and has captured its first ever image, seen above, a few weeks ago on February 16th. The high-resolution picture is of the Rio San Pablo, an ecological transition zone that’s marked as a protected area by the National Environment Authority of Panama. Captured at three to seven frames per second with about 100 images per pass, photos like these are designed to transmit details of natural disasters and environmental mishaps to developing nations.

Even though NASA Marshall in Huntsville, Alabama is at the helm, it’s in cahoots with researchers in Central America, East Africa and the Hindu Kush-Himalaya region to carry out its goal. Of course, they’re still in the starting stages at the moment — a few outstanding issues include the amount of sunlight needed and if the geometry of the ISS window affects the image — but NASA hopes to open up the ISERV to other scientists in a few months once it has all its kinks worked out. To check out the stunning “first light” picture above in its full resolution, head on over to the source below.

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Via: Space.com

Source: NASA Earth Observatory

Physicists steer light on superconducting chips, forge our quantum computing future

DNP Physicists manipulate light on superconducting chips, forge path to quantum computing future

We’re still years away from quantum computing becoming an everyday reality, but the physics geniuses over at the University of California Santa Barbara have made a discovery that might speed that process along. A team under professor John Martinis’ tutelage has developed a way to manipulate light on a superconducting chip at the quantum level, allowing the group to control the wave forms of released photons with a switch and a resonator. That might not seem like much, but it’s ultimately a launching pad for much more. With photons now bowing to researchers’ whims, the next step is to see if the particles can securely transfer data over long distances, such as between Earth and orbiting satellites, or just from one end of the world to another. It’s a lofty goal to be sure, but nobody said the revolution would be over in a day.

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Via: Phys.org

Source: Physical Review Letters

Curiosity rover leaves safe mode, remains in Martian limbo

Curiosity rover leaves safe mode, remains in Martian limbo

The Curiosity rover has been in an especially precarious position since late last week, when a memory glitch forced it into a safe mode while NASA prepared a backup and diagnosed the trouble. We’re glad to report that the worst is over. Scientists have confirmed that the rover left safe mode on later on Saturday and started using its high-gain antenna for communication a day later. However, it’s not quite out of the woods yet — if Mars had woods, that is. The backup is still taking on the information it needs to assume full responsibility, and NASA wants to evaluate the suitability of the one-time primary computer as the new backup. Nonetheless, all the early indicators point to Martian exploration going back on track within days.

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Source: Jet Propulsion Laboratory

Inspiration Mars ship using human waste as a radiation shield: no really, it’s fine

Inspiration Mars mission will use human waste for radiation shielding no really, it works

Dennis Tito is planning an ambitious private flyby of Mars for 2018 that will carry all kinds of logistical challenges during its proposed 501-day span, not the least of which is shielding the crew from radiation without consuming valuable resources. The team’s solution is a clever one, if not especially pretty: human waste. While the walls of the Inspiration Mars spacecraft will initially be lined with water-filled bags to guard against cosmic rays, their contents will be gradually replaced with er, byproduct that will be dehydrated through the bag (possibly using polyethylene) to reclaim and purify water for drinking. As water-based materials are better at stopping radiation than metal, the approach theoretically represents the best of all worlds with less bulk, a simpler life support system and maximum room for supplies. If the Inspiration Mars group can keep the bags working at high efficiency in space, it won’t have to worry about its travelers’ safety; their comfort with being surrounded by their own waste may be another matter.

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Source: New Scientist

Alt-week 3.2.13: A mission to Mars, robosparrow and facial recognition in fertility treatment

Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.

Alt-week 3.2.13: A mission to Mars, robosparrow and facial recognition in fertility treatment

Life — as they say — is short. So, you gotta cram in as much as you can while you’re here. Right? How about a once in a lifetime trip around Mars? Well, if that’s on your bucket list, then you might just be in luck. There’s other news pertaining to one of life’s biggest events over the fold, too, but we’ll leave you to figure out which story that is. Hint: it’s not the robotic bird. This is alt-week.

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Source: Virtual Press Office

NASA: SpaceX Dragon capsule to reach ISS on March 3rd at 6:01AM ET

Didn’t get enough of the Dragon capsule launch this week? Good news, because after a day’s delay due to (now remedied, according to NASA and SpaceX) faults with three clusters of its Draco thrusters, the capsule is set to be grappled by the International Space Station at 6:31AM ET on March 3rd (tomorrow morning). If you’ll recall, the mission is mainly aimed at getting refreshed supplies and some experiments up to the space station. As an aside, NASA also notes that Dragon is still set to arrive back on earth for a splashdown on the 25th, as initially planned. If you’re up for it, NASA TV coverage starts at 3:30AM the same day and the final berthing process (actually getting the capsule connected to the ISS) should happen after 8AM — all that said, initial “orbital maneuvers” are set for 2AM, according to a tweet from Elon Musk. For more details on this stage of the mission, including those involved, blast over to the NASA source link below — and make sure you’ve got enough coffee ready.

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Via: The Verge

Source: NASA, SpaceX (Twitter), Elon Musk (Twitter)

Curiosity rover to stay in ‘safe mode’ for days while NASA tackles glitches

Curiosity rover flipped into 'safe mode' to overcome glitches

NASA’s Curiosity rover has mostly had smooth sailing since it touched down on Mars last year. Unfortunately, it’s in a more precarious position as of this past Thursday. After noticing corrupted memory files on the robot’s primary computer, overseers have kicked Curiosity into a “safe mode” with a backup computer while they determine what’s wrong and deliver any viable fixes. Don’t think of this like you would the Safe Mode on a Windows PC, though. While the backup can serve as a replacement for the main computer, project manager Richard Cook warns Space.com that it will likely take “several days” to supply enough information that the failsafe can take over. NASA will switch back to the main computer if and when it’s ready; if it is, the agency hopes to harden the code against future flaws. Curiosity will effectively stay on ice in the meantime… and not the variety it might want to find.

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Source: Space.com

The After Math: Cinder block-chucking robots, Barcelona’s mobile bonanza and brain doctors

Welcome to The After Math, where we attempt to summarize this week’s tech news through numbers, decimal places and percentages.

The After Math Barcelona's mobile bonanza, Big Dog and brain doctors

Barcelona’s Mobile World Congress may have formed the backbone for this week’s news but there was also notable news elsewhere — like the fact that Boston Dynamics’ upgraded quadruped robot can now throw cinder blocks. We’ll be sticking closer to the (safer) events in Spain, however, so take a look for yourself after the break.

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Duke melds two rats’ minds through the internet, Spock may not approve

Duke University melds two rats' thoughts over the internet we're not sure Spock would approve

Some would say the internet already lets us share every minute detail of our thoughts, much to our followers’ dismay. Duke University isn’t deterred by our behavior — if anything, it just took oversharing literally by connecting two rats’ minds in an experiment, first in a lab and ultimately online. Electrodes attached to the brain of a host “encoder” rat in Brazil processed the motor-oriented mental activity for a desired behavior, such as pressing a lever on cue, and converted it into a signal that was then received by a “decoder” rat as far away as Duke’s US campus. The majority of the time, the decoder rat performed the same action as the encoder. Researchers also found that rewarding the encoder alongside the decoder created a virtuous loop, as treating the first rat for a job well done focused its attention and improved the signal strength.

We’re not sure that Vulcans would endorse this kind of mind meld, though: apart from immediately depriving the decoder rat of self-control, prolonged testing led to the same rodent developing additional sympathetic reactions to the encoder. There’s also concerns that the test was too binary and didn’t reflect the complexity of the whole brain. All the same, Duke’s study is proof enough that we can export brainwaves in a meaningful way.

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Via: Discovery News

Source: Nature