Sunday, 29 de March de 2015

Noticias y opinión


Scientists build GPU cluster for subatomic calculations

The latest addition to computing power at DOE’s Fermi National Accelerator Laboratory is a 45-teraflop cluster of graphics processing units that scientists use to explore the properties of the strong nuclear force. The GPU nodes power through data faster than any other computing nodes at more than five times the rate of the processing units of the previous generation.

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Researchers' paper wins Best Paper Award for 2011

A paper written by Dr. Paul Gratz and his graduate student, Reena Panda, from the Department of Electrical and Computer Engineering at Texas A&M University was selected as one of the best papers from IEEE Computer Architecture Letters in 2011 and will be featured during a special session during The 18th IEEE International Symposium on High-Performance Computer Architecture (HPCA).

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Study analyzes emotions in software engineering

Emotions are an important factor that must be taken into account when designing any type of software. This is the conclusion reached through a research project coordinated by the Universidad Carlos III de Madrid (Spain) that analyzes the role played by feelings in the users and developers of computer systems.

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New error-correcting codes guarantee the fastest possible rate of data transmission

Error-correcting codes are one of the triumphs of the digital age. They’re a way of encoding information so that it can be transmitted across a communication channel — such as an optical fiber or a wireless connection — with perfect fidelity, even in the presence of the corrupting influences known as “noise.”

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Scientists break satellite telephony security standards

Satellite telephony was thought to be secure against eavesdropping. German researchers at the Horst Gortz Institute for IT-Security (HGI) at the Ruhr University Bochum (RUB) have cracked the encryption algorithms of the European Telecommunications Standards Institute (ETSI), which is used globally for satellite telephones, and revealed significant weaknesses. In less than an hour, and with simple equipment, they found the crypto key which is needed to intercept telephone conversations. Using open-source software and building on their previous research results, they were able to exploit the security weaknesses.

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Power profiles help electronics go green

(PhysOrg.com) -- New and better ways of measuring high-tech energy consumption could lead to significant environmental and economic gains, a study from The Australian National University has found.

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Engineers boost computer processor performance by over 20 percent

Researchers from North Carolina State University have developed a new technique that allows graphics processing units (GPUs) and central processing units (CPUs) on a single chip to collaborate – boosting processor performance by an average of more than 20 percent.

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Gamers on 3-D Mission to Save World; Just Don't Tell Them They Are Learning Cell Biology

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Cable TV top source for US political news: study

Cable television is the leading source of US political news for Americans, according to a study released Tuesday, but fewer people are closely following the presidential campaign than four years ago.

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Intelligent software assigns appropriate background music for pictures

Previously, setting a picture or whole series of pictures to suitable music required expert knowledge and a great deal of time. Newly developed software called Picasso succeeds in arranging pictures with appropriate compositions in an instant, by utilizing the technical skills of movie directors. Scientists at the Cluster of Excellence on "Multimodal Computing and Interaction" at Saarland University developed the software, and they will present the program with its associated smart phone app "PicasSound" at the Cebit computer expo. Cebit will take place from the 6th through the 10th of March at the fairground in Hanover, Germany.

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Georgia Tech develops braille-like texting app (w/ video)

Imagine if smartphone and tablet users could text a note under the table during a meeting without anyone being the wiser. Mobile gadget users might also be enabled to text while walking, watching TV or socializing without taking their eyes off what they're doing.

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Computing professor sparks gamers' creativity at world renowned conference

Gamers don't just play Nicholas Graham's new video game, Liberi Live – they design it. While one player is rolling and bouncing a ball over obstacles and collecting coins another player can control the course design. The two interact together and with a touch of a button, obstacles or ramps can be added to completely change the game.

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Apple brings iPad features to the Mac

Apple released a preview version of its new Macintosh operating system on Thursday, bringing some features of the iPad to the personal computer.

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Remove software for smartphone can zap photo items (w/ video)

(PhysOrg.com) -- A Swedish company focused on mobile-device imaging technology, Scalado, plans to show object-removal software for the smartphone at this month’s Mobile World Congress in Barcelona. The software lets you remove anything in a photo that you’re taking, with just a screen tap. The only requirements are that the object has to be moving -- unwanted pedestrians as you try to capture something on the city streets, for example -- for the application to capture and delete. Also, the camera needs to stay still and focused on the subject while you touch each moving item chosen for removal.

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US regulators pull plug on LightSquared

US telecom regulators have pulled the plug on an ambitious plan to build a high-speed wireless broadband network, citing potential interference with GPS navigation devices.

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FCC adopts new rules against 'robocalls'

(AP) -- The federal government is cracking down on "robocalls," those automated phone calls with the tendency to interrupt Sunday dinners and otherwise annoy consumers.

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Chicago asked not to stifle wireless at summits

(AP) -- Protesters are coming by the thousands to Chicago, armed with smartphones, video cameras and social media links that will allow them to instantly map strategy, share plans and disseminate images of what's happening - right in front of a police force renowned for responding with tough tactics.

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Worldwide mobile data traffic to rocket: Cisco

The amount of data sent to or from mobile gadgets around the world annually will rocket to hit the equivalent of 33 billion full-length DVD films by the year 2016, computer networking titan Cisco forecast on Tuesday.

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AT&T customers surprised by 'unlimited data' limit

(AP) -- Mike Trang likes to use his iPhone 4 as a GPS device, helping him get around in his job. Now and then, his younger cousins get ahold of it, and play some YouTube videos and games.

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Darpa to develop mobile millimeter-wave backhaul networks

Providing high-bandwidth communications for troops in remote forward operating locations is not only critical but also challenging because a reliable infrastructure optimized for remote geographic areas does not exist. When you introduce additional needs, such as communication support for data feeds from Unmanned Aerial Vehicles (UAVs) transmitting information to troops on patrol in remote areas, you face a host of new challenges where dropped signals can create a serious threat to a warfighter's situational awareness.

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