25/09/2008

Zeroing in on Wi-Fi 'dead zones'

Rooting out Wi-Fi "dead zones" in large wireless networks that cover whole neighborhoods or cities is an expensive proposition. Pre-deployment testing is so costly that most WiFi providers simply build their networks first ...

Risky behaviors on TV may be modeled by inexperienced viewers

Content analyses demonstrate that TV programming is highly saturated with sexual content and risky sexual behavior. A new study in the Journal of Communication shows that people with direct experience with such behavior are ...

Scientists identify novel inhibitor of human microRNA

Scientists at The Wistar Institute and their colleagues have identified, for the first time, a molecule that can regulate microRNAs – short strands of RNA that play a vital role in gene expression and are closely associated ...

Detecting human activities through barriers

University of Texas professor Hao Ling and Ph.D. candidate, Shobha Ram, are one step closer to making x-ray vision a reality. They are perfecting radar systems that can detect human activities through barriers and convert ...

The wild, hidden cousin of SN 1987A supernova

The supernova, called SN 1996cr, was first singled out in 2001 by Franz Bauer. Bauer noticed a bright, variable source in the Circinus spiral galaxy, using NASA's Chandra X-ray Observatory. Although the source displayed some ...

Government involvement in the economy increases ethnic rebellion

A new study in the journal International Studies Quarterly reveals that ethnic violence is actually much less likely in countries where the free market predominates than it is in countries where the government plays an extensive ...

Galloping and breathing at high speed

The coordination of two systems are key for any horse to walk, trot, gallop or win a race. The first are the lower limbs, which allow the animal to move along on a "spring-like" tendon. The second is a complicated respiratory ...

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