Data Storage

Samsung Creates New File System F2Fs For Linux & Android 140

sfcrazy writes "Samsung has created a new Linux file system called F2FS. Jaegeuk Kim of Samsung writes on the Linux Kernel Mailing List: F2FS is a new file system carefully designed for the NAND flash memory-based storage devices. We chose a log structure file system approach, but we tried to adapt it to the new form of storage. Also we remedy some known issues of the very old log structured file system, such as snowball effect of wandering tree and high cleaning overhead."

How To Steal a Space Shuttle 130

An anonymous reader tips a piece by Jason Torchinsky at Jalopnik, who attended the California Science Center's press conference about moving Space Shuttle Endeavour through Los Angeles to its final resting place. While he was there, he noticed that security for the event was focused less on the shuttle than on keeping the city itself safe. So, after a helpful LAPD officer suggested it would be impossible for a supervillain to make off with OV-105, Torchinsky went ahead and made a plan to do just that. All he needs is a submarine, a score of Sikorsky CH-53E heavy-lift helicopters, a salvaged and disguised Buran spaceplane, and the assistance of Switzerland.

Boeing Proposes Using Gas Clouds To Bring Down Orbital Debris 147

cylonlover writes "Boeing has filed a patent application for a method of disposing of dead satellites and other debris orbiting the earth by hitting them with a puff of gas. The method, which is still at the conceptual stage, is designed to slow down satellites, forcing them to re-enter the atmosphere without sending up more space junk that itself will need disposing of. The idea is to send a small satellite into orbit containing a gas generator. This generator can be a tank of cryogenic gas, such as xenon or krypton, or a device designed to vaporize a heavy metal or some relatively heavy elements like fluorine, chlorine, bromine, or iodine. This gas would be released as a cloud in the same orbit as the debris, but traveling in the opposite direction." Clever of them to patent this, since knock-off space-junk removal systems are in such high demand.

Boston Airport Replacing X-ray Body Scanners 119

OverTheGeicoE writes "Boston's Logan International Airport is in the process of replacing its X-ray body scanners with millimeter-wave ones. According to the article, nine of the new scanners have been installed already, and ultimately 27 of these scanners will replace the 17 X-ray backscatter scanners that were installed in March of 2010. The new devices are 'being installed come with software that replaces "passenger-specific images" — or nearly naked views of travelers — with generic outlines that highlight only anomalies such as belts, jewelry, wallets — or guns or bombs.' Perhaps this will help TSA workers avoid being part of a cancer cluster. Some speculate that TSA will ultimately eliminate all of its X-ray body scanners."
Wireless Networking

FCC Chief: 300MHz More Spectrum By 2015 60

itwbennett writes "On Thursday, FCC Chairman Julius Genachowski laid out plans to make 300MHz more spectrum available by 2015. Among the blocks that will be auctioned in the AWS (Advanced Wireless Services) band is a band between 1755MHz and 1780MHz, where a commercial user would share the spectrum with current government users." Genachowski's full speech (PDF) is available online.
Social Networks

Decentralized Social Networking — Why It Could Work 128

Slashdot contributor Bennett Haselton writes with "a response to some of the objections raised to my last article, about a design for a distributed social networking protocol, which would allow for decentralized (and censorship-resistant) hosting of social networking accounts, while supporting all of the same features as sites like Facebook." Social networking is no longer new; whether you consider it to have started with online communities in the mid-90s or with the beginnings of sites many people still use today. As its popularity has surged, it has grown in limited ways; modern social networks have made communication between users easier, but they've also made users easier to market to advertisers as well. There's no question that the future of social networking holds more changes that can both help and harm users — perhaps something like what Bennett suggests could serve to mitigate that harm. Read on for the rest of his thoughts.

Astronomers Search For Dyson Spheres of Alien Civilizations 686

Hugh Pickens writes "An article by Ross Andersen makes note of Freeman Dyson's prediction in 1960 that every civilization in the Universe eventually runs out of energy on its home planet, a major hurdle in a civilization's evolution. Dyson argued that all those who leap over it do so in precisely the same way: they build a massive collector of starlight, a shell of solar panels to surround their home star. Last month astronomers began a two-year search for Dyson Spheres, a search that will span the Milky Way, along with millions of other galaxies. The search is funded by a sizable grant from the Templeton Foundation, a philanthropic organization that funds research on the 'big questions' that face humanity, questions relating to 'human purpose and ultimate reality.' Compared with SETI, a search for Dyson Spheres assumes that the larger the civilization, the more energy it uses and the more heat it re-radiates. If Dyson Spheres exist, they promise to give off a very particular kind of heat signature, a signature that we should be able to see through our infrared telescopes. 'A Dyson Sphere would appear very bright in the mid-infrared,' says project leader Jason Wright. 'Just like your body, which is invisible in the dark, but shines brightly in mid-infrared goggles.' A civilization that built a Dyson Sphere would have to go to great lengths to avoid detection, building massive radiators that give off heat so cool it would be undetectable, a solution that would involve building a sphere that was a hundred times larger than necessary. 'If a civilization wants to hide, it's certainly possible to hide,' says Wright, 'but it requires massive amounts of deliberate engineering across an entire civilization.'"

Lab-Made Eggs Produce Healthy Mice 81

ananyo writes "Japanese researchers have coaxed mouse stem cells into becoming viable eggs that produce healthy offspring. Last year, the same team successfully used mouse stem cells to make functional sperm (other groups have produced sperm cells in vitro). The researchers used a cocktail of growth factors to transform stem cells into egg precursors. When they added these egg precursor cells to embryonic ovary tissue that did not contain sex cells, the mixture spontaneously formed ovary-like structures, which they then grafted onto natural ovaries in female mice. After four weeks, the stem-cell-derived cells had matured into oocytes. The team removed the oocytes from the ovaries, fertilized them and transplanted the embryos into foster mothers. The offspring that were produced grew up to be fertile themselves."

Electric Car Environmental Impact: Power Source Matters 341

another random user writes with news of a study from the Norwegian University of Science and Technology, which looked into the environmental impact of electric vehicles — not just how they do when driven, but how they are produced and by what means they are charged. The study pointed out that the production of EVs has twice as much of an environmental impact as the production of typical gas-powered cars, which must be taken into account when comparing the two. Also, they say it's important to consider the source of the electricity used to charge the vehicles. In places like Europe, where a good chunk of the electricity comes from renewable sources, EVs do indeed provide a benefit to the environment. However, "In regions where fossil fuels are the main sources of power, electric cars offer no benefits and may even cause more harm." The study says, "It is counterproductive to promote electric vehicles in regions where electricity is primarily produced from lignite, coal or even heavy oil combustion."

How Steve Jobs' Legacy Has Changed 420

On the anniversary of Steve Jobs' death, reader SternisheFan sends in a story from CNN about how the Apple co-founder's legacy has changed since then. "... in the 12 months since, as high-profile books have probed Jobs' life and career, that reputation has evolved somewhat. Nobody has questioned Jobs' seismic impact on computing and our communication culture. But as writers have documented Jobs' often callous, controlling personality, a fuller portrait of the mercurial Apple CEO has emerged. 'Everyone knows that Steve had his "rough" side. That's partially because he really did have a rough side and partially because the rough Steve was a better news story than the human Steve,' said Ken Segall, author of Insanely Simple: The Obsession That Drives Apple's Success.' ... In Steve Jobs, Isaacson crafted a compelling narrative of how Jobs' co-founded Apple with Steve Wozniak, got pushed out of the struggling company a decade later and then returned in the late 1990s to begin one of the most triumphant second acts in the annals of American business. But he also spent many pages chronicling the arrogant, cruel behavior of a complicated figure who could inspire people one minute and demean them the next. According to the book, Jobs would often berate employees whose work he didn't like. He was notoriously difficult to please and viewed people and products in black and white terms. They were either brilliant or 'sh-t.' 'Among Apple employees, I'd say his reputation hasn't changed one bit. If anything, it's probably grown because they've realized how central his contributions were,' Lashinsky said. 'History tends to forgive people's foibles and recognize their accomplishments. When Jobs died, he was compared to Edison and Henry Ford and to Disney. I don't know what his place will be in history 30, 40, 50 years from now. And one year is certainly not enough time (to judge).'" Apple has posted a tribute video on their homepage today.

Curiosity Rover Makes First Foursquare Check-In On Another Planet 92

cylonlover writes "NASA launched a strategic partnership with location-based social networking site foursquare in 2010 with the first-ever check-in from the International Space Station (ISS) by astronaut Doug Wheelock. Now the space agency has gone one better with the first check-in on another planet thanks to its Curiosity Mars rover. Since fellow foursquare users will have a hard time checking in on the Red Planet themselves, they'll instead be able to earn a Curiosity-themed badge for visiting locations relating to science, technology, engineering and mathematics. The badge will be available later this year and is designed to spark the scientific curiosity of foursquare users by encouraging them to visit science centers, laboratories and museums."

Hitachi Develops Boarding Gate With Built-In Explosives Detector 118

An anonymous reader writes "Hitachi, in collaboration with Nippon Signal and the University of Yamanashi, have successfully prototyped a boarding gate with built-in explosives detection equipment as part of efforts to increase safety in public facilities such as airports. The prototype boarding gate efficiently collects minute particles which have affixed themselves to IC cards or portable devices used as boarding passes, and can detect within 1-2 seconds the presence of explosive compounds using internalized equipment. With this method, it is possible to inspect 1,200 passengers per hour."

Europe Joins Forces In Massive Simulated Cyber Attack 36

An anonymous reader writes "Hundreds of cyber security experts from across the EU are testing their readiness to combat cyber-attacks in a day-long simulation across Europe today. In Cyber Europe 2012, 400 experts from major financial institutions, telecoms companies, internet service providers and local and national governments across Europe are facing more than 1200 separate cyber incidents (including more than 30 000 emails) during a simulated DDoS campaign. The exercise is testing how they would respond and co-operate in the event of sustained attacks against the public websites and computer systems of major European banks. If real, such an attack would cause massive disruption for millions of citizens and businesses across Europe, and millions of euros of damage to the EU economy."
United Kingdom

Scottish Scientists Create World's Smallest Smart Antenna 91

judgecorp writes "Each generation of smartphones actually has more dropped calls and worse battery life than the last, because antenna design has fallen behind, says Edinburgh-based Sofant Technologies. The firm has made a tunable, steerable RF antenna using micro-electro-mechanical-system (MEMS) which it says will change all that. It's based on research from Edinburgh University and is designed to get the best out of LTE/4G."

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