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Showing posts from September, 2009

ScienceMatters @ Berkeley. Physics that Presidents Need to Know

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Quantum computer slips onto chip

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Researchers have devised a penny-sized silicon chip that uses photons to run Shor's algorithm - a well-known quantum approach - to solve a maths problem.The algorithm computes the two numbers that multiply together to form a given figure, and has until now required laboratory-sized optical computers.This kind of factoring is the basis for a wide variety of encryption schemes.The work, reported in Science, is rudimentary but could easily be scaled up to handle more complex computing.Shor's algorithm and the factoring of large numbers has been a particular case used to illustrate the power of quantum computing.Quantum computers exploit the counterintuitive fact that photons or trapped atoms can exist in multiple states or "superpositions" at the same time.For certain types of calculations, that "quantum indeterminacy" gives quantum computers a significant edge.While traditional or "classical" computers find factoring large numbers impracticably time…

Augmented Reality in a Contact Lens

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BIOMEDICAL // BIONICS FEATUREAugmented Reality in a Contact LensA new generation of contact lenses built with very small circuits and LEDs promises bionic eyesightPAGE1234 //VIEW ALL Image: Raygun Studio BY BABAK A. PARVIZ // SEPTEMBER 2009The human eye is a perceptual powerhouse. It can see millions of colors, adjust easily to shifting light conditions, and transmit information to the brain at a rate exceeding that of a high-speed Internet connection.But why stop there?In the Terminator movies, Arnold Schwarzenegger’s character sees the world with data superimposed on his visual field—virtual captions that enhance the cyborg’s scan of a scene. In stories by the science fiction author Vernor Vinge, characters rely on electronic contact lenses, rather than smartphones or brain implants, for seamless access to information that appears right before their eyes.These visions (if I may) might seem far-fetched, but a contact lens with simple built-in electronics is already within reach; in fact…

Racetrack Memory: The Future Third Dimension of Data Storage

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Racetrack Memory: The Future Third Dimension of Data StorageA device that slides magnetic bits back and forth along nanowire 'racetracks' could pack data in a three-dimensional microchip and may replace nearly all forms of conventional data storage.A device that slides magnetic bits back and forth along nanowire "racetracks" could pack data in a three-dimensional microchip and may replace nearly all forms of conventional data storageBy Stuart S. P. Parkiney ConceptsA radical new design for computer data storage called racetrack memory (RM) moves magnetic bits along nanoscopic “racetracks.”RM would be nonvolatile—retaining its data when the power is turned off—but would not have the drawbacks of hard disk drives or present-day nonvolatile chips.Chips with horizontal racetracks could outcompete today’s nonvolatile “flash” memory. Building forests of vertical racetracks on a silicon substrate would yield three-dimensional memory chips with data storage densities surpass…

Maple Tree Power

IEEE Spectrum: If You Want To Power Nanoscale Devices, Maple Trees Can Do The TrickPOSTED BY: DEXTER JOHNSON // FRI, SEPTEMBER 18, 2009I saw this catchy headline over at Scientific American: Tree Electricity Runs Nano-Gadget. Apparently the headline was inspired by research reported in the IEEE’s Transactions on Nanotechnology by researchers from the University of Washington in Seattle who discovered they could derive enough electricity from a maple tree to run a device, as long as that device had dimensions of 130 nanometers.Now I get why a science publication would pick this up as a cute little story to entertain its readers and even its listeners (it is accompanied with a podcast), but I am trying to figure out if there is any larger goal aimed at by the researchers. I admittedly could not locate the experiment on the IEEE Transactions on Nanotechnology website to determine what the greater purpose was.But I have been thinking that if you were able to hook up all the trees in the s…

Visa payWave | Personal | Visa USA

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Visa payWave | Personal | Visa USAProgressive Payment OptionsVisa Card * Visa payWave feature offers cutting edge convenience and flexibility * Magnetic stripe also enables traditional paymentsVisa Mini Card * The first alternative Visa payWave payment device * Measures half the size of a traditional card * Includes Visa payWave and magnetic stripe functionalityVisa Micro Tag * The latest innovation in Visa payments, Visa's first payment device designed exclusively for Visa payWave payments * No more fumbling through your purse or wallet, the Visa Micro Tag is easily accessible on your key ring * Designed to be small, durable, practical, and convenient"

Eclipse Errors on Mac OS X

“The eclipse executable launcher was unable to locate its companion shared library”

Try double-clicking directly on:
/Applications/eclipse/Eclipse.app/Contents/MacOS/eclipse
Hint: You may have to right-click on Eclipse.app and select "Show package contents."

If that doesn't work, check in:
/Applications/eclipse/Eclipse.app/Contents/MacOSfor a file named eclipse.ini

Check the file for file names or paths that no longer exist and change/delete them.

T Shaped People

The technology workers most in demand in the future, according to James E. Spohrer, a researcher and director of university programs for I.B.M., will be "T-shaped people." Such people, Mr. Spohrer explains, possess a deep knowledge in one technical discipline topped off by a wide portfolio of skills, from project management to industry expertise, that makes them more valuable to employers.
By STEVE LOHR Published: August 19, 2009


“Technical expertise by itself is not sufficient, and that is more true now than it has ever been,” said Bhaskar Pant, executive director of professional programs at Massachusetts Institute of Technology’s school of engineering.