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Researchers Develop Techniques for Computing Google-Style Web Rankingsup to Five Times Faster

Speed-up may make “topic-sensitive” page rankings feasible Computer science researchers at Stanford University have developed several new techniques that together may make it possible to calculate Web page rankings as used in the Google search engine up to five times faster. The speed-ups to Google’s method may make it realistic to calculate page rankings personalized for an individual’s interests or customized to a particular topic. The Stanford team includes grad

For best results, stick to one search engine

Web users who stick to one or two search engines and learn those well will have better results for their queries than users who try the same query or various engines, a Penn State researcher says.

“There are no wholesale rules about structuring a query that will work on multiple search engines,” said Bernard J. Jansen, assistant professor of information sciences and technology (IST). “And what works on one engine, such as narrowing a query, can have the opposite effect on other search engine

Meteorites rained on Earth after massive asteroid breakup

Geologists find meteorites 100 times more common in wake of ancient asteroid collision

Using fossil meteorites and ancient limestone unearthed throughout southern Sweden, marine geologists at Rice University have discovered that a colossal collision in the asteroid belt some 500 million years ago led to intense meteorite strikes over the Earth’s surface.

The research, which appears in this week’s issue of Science magazine, is based upon an analysis of fossil meteor

Big red jelly surprises scientists

In photographs, it looks like a big red spaceship cruising the ocean depths. But it’s actually a new species of jelly that was discovered and described by scientists at the Monterey Bay Aquarium Research Institute. MBARI scientists published their research on this unusual animal in a recent online version of the journal Marine Biology.

With a bell diameter of up to a meter wide, the new jelly, named Tiburonia granrojo or “big red,” would seem tough to miss, except that it lives deep below t

Study ties frequent school changes to behavior problems

Children who frequently change schools are more likely than those who don’t to have behavioral health problems, according to a new Cincinnati Children’s Hospital Medical Center study.

The study, to be presented Sunday, May 4, at the annual meeting of the Pediatric Academic Societies in Seattle, shows that school mobility is an independent predictor of behavioral problems – regardless of one’s race, income, maternal education level or any other factor measured in the study.

“Transit

Web-based attacks could create chaos in the physical world

Computer security researchers suggest ways to thwart new form of cybercrime

Most experts on computer crime focus on attacks against Web servers, bank account tampering and other mischief confined to the digital world. But by using little more than a Web search engine and some simple software, a computer-savvy criminal or terrorist could easily leap beyond the boundaries of cyberspace to wreak havoc in the physical world, a team of Internet security researchers has concluded.

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