by Z. Han et al. arXiv.org E-print Archive, 25 Apr 2007 Extending network lifetime of battery-operated devices is a key design issue that allows uninterrupted information exchange among distributive nodes in wireless sensor networks.  Collaborative beamforming (CB) and cooperative transmission (CT) have recently emerged as new communication techniques that enable and leverage effective resource sharing [...]

by D. Angelosante et al. arXiv.org E-print Archive, 24 Apr 2007 We examine the problem of determining which nodes are neighbors of a given one in a wireless network.  We consider an unsupervised network operating on a frequency-flat Gaussian channel, where K+1 nodes associate their identities to nonorthogonal signatures, transmitted at random times, synchronously, and [...]

CNN.com, 30 Apr 2007 A convincing twin of Darth Vader stalks the beige cubicles of a Silicon Valley office, complete with ominous black mask, cape and light saber.  But this is no chintzy Halloween costume.  It’s a prototype, years in the making, of a toy that incorporates brain wave-reading technology.  Behind the mask is a [...]

by H. Bast et al. Science, 27 Apr 2007 When you drive to somewhere far away, you will leave your current location via one of only a few important traffic junctions.  Starting from this informal observation, we developed an algorithmic approach, transit node routing, that allows us to reduce quickest path queries in road networks [...]

by Jeff Hawkins IEEE Spectrum Online, April 2007 By the age of five, a child can understand spoken language, distinguish a cat from a dog, and play a game of catch.  These are three of the many things humans find easy that computers and robots currently cannot do.  Despite decades of research, we computer scientists [...]

Papers are now being accepted for the 2007 International Conference on Software in Telecommunications and Computer Networks.  Authors are invited to submit papers on a variety of topics including communications software, mobile and wireless communications, network operations and management, and more.  Authors of the best papers will be invited to submit a revised and extended [...]

The 7th International Symposium on Communications and Information Technologies is currently seeking paper submissions.  Authors are asked to submit papers on topics including Communications and Networking, VLSI and Circuits and Systems, Signal Processing, Computer and Information Systems.  The conference takes place from 17 to 19 October in Sydney Australia.  Paper submission deadline is 10 June. [...]

by B. Stoimenov et al. SPIE Newsroom, accessed 24 Apr 2007 Actuators make mechanical devices move.  With all the variety of operating principles — electromagnetic, piezoelectric, hydraulic, and so on — current actuators have one thing in common: they are all packed in a hard casing.  That may be an advantage in factory automation, but [...]

by J. Mccarthy USATODAY.com, accessed 24 Apr 2007 New technology is allowing energy producers to capture speedier wind that environmental activists say has the potential to provide 20% of the state’s electricity within 10 years.  What’s new are taller windmills that can catch gusts that are faster than those closer to the ground.  The tallest [...]

by J. Robertson USATODAY.com, accessed 24 Apr 2007 IBM has found a way to connect chips inside products ranging from cellphones to supercomputers, an advance that promises to prolong battery life in wireless devices and eventually speed data transfers between the processor and memory chips in computers.  The manufacturing technique outlined by IBM eliminates the [...]