Communications of the ACM
Why the Simplex Method, at Age 75, is Still the Go-To Algorithm
Daniel A. Spielman and colleague Shang-hua Teng solved the mystery of the Simplex Method using a technique called smoothed analysis… From ACM NewsAn edited collection of advanced computing news from Communications of the ACM, ACM TechNews, other ACM resources, and news sites around the Web.
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Augmented Identity
An application that lets users point a smart phone at a stranger and immediately learn about them premiered last Tuesday at the Mobile World Congress in Barcelona...
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How to Make the Internet a Lot Faster
Google recently announced plans to build an experimental fiber network that would offer gigabit-per-second broadband speeds to up to 500,000 U.S. homes. The speeds...
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A Faster Wireless Web
Transfers of large amounts of data across the Internet to wireless devices suffer from a key problem: The Transmission Control Protocol (TCP) used to send and receive...
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Wi-Fi at the Speed of Light
A wireless network that uses reflected infrared light instead of radio waves has transmitted data through the air at a speed of one gigabit per second—six to 14...
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A 50-Watt Cellular Network
An Indian telecom company is deploying simple cell phone base stations that need as little as 50 watts of solar-provided power. It will soon announce plans to sell...
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Getting a Grip on Online Buzz
Big-name companies increasingly recognize the importance of discussions about their products on social media sites such as Facebook and Twitter. But keeping track...
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Searching For Disease Clues in Genetic Diversity
Over the last few years, scientists have discovered hundreds of genetic variants linked to disease. But the vast majority of that research has focused on people...
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What's Inside the Ipad's Chip?
Despite widespread speculation, nothing beyond what Steve Jobs announced last week is known about the A4 chip at the heart of the Apple iPad. Jobs described the...
From ACM TechNews
Best Connected Individuals Are Not the Most Influential Spreaders in Social Networks
Boston University researchers have developed a method for studying and identifying hubs within social networks. The approach emphasizes the location of the individual...
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New Life For Magnetic Tape
Music lovers may have long forsaken them, but magnetic tapes still reign supreme when it comes to storing vast amounts of digital data. And new research from IBM...
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China Details Homemade Supercomputer Plan
Researchers at the Chinese Institute of Computing Technology (ICT) have built a supercomputer using only home-grown microprocessors. The supercomputer, known as...
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How Google Ranks Tweets
To deliver useful search returns from the so-called real-time Web--such as seconds-old Twitter "tweets" reporting traffic jams--Google has adapted its page-ranking...
From ACM TechNews
Making Tv Social, Virtually
Researchers from Motorola, BT, and Intel are developing ways to combine social networking technology with TV viewing. The goal is to get as close as possible to...
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Bringing Color to E-Readers
One of the hot topics at the Consumer Electronics Show this week in Las Vegas is color e-readers, with several companies showcasing new products. While E-Ink has...
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Trading Shares in Milliseconds
Today's stock market has become a world of automated transactions executed at lightning speed. This high-frequency trading could make the financial system more...
From ACM TechNews
How Intelligent Vehicles Will Increase the Capacity of Our Roads
Traffic flow will improve as more computer-controlled vehicles hit the road, according to new research from Arne Kesting and colleagues at the Technical University...
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Complex Integrated Circuits Made of Carbon Nanotubes
Stanford University researchers have developed the first three-dimensional (3D) carbon nanotube circuits. Three-dimensional nanotube circuits could be a major...
From ACM TechNews
Less Clumsy Code For the Cloud
Researchers at the University of California, Berkeley are working on a project called BOOM, which is developing new programming techniques for cloud computing....
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Self-Policing Cloud Computing
Researchers at IBM Thomas J. Watson Research Center and IBM Research-Zurich have developed a cloud computing security system that makes elements of the cloud act...
From ACM TechNews