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Parameter Selection for WYNER-ZIV Coding of Laplacian Sources: A large number of practical coding scenarios deal with sources such as transform coefficients that can be well modeled as Laplacians. For regular coding of such sources, samples are often quantized by a family of uniform quantizers possibly with a deadzone, and then entropy coded. For the Wyner-Ziv coding problem...; Tags: Source, International Society For Optical Engineering; White papers 2007-12-20
Investigation Into the Performance of EOTD for GSM Users in Telematics Applications: Location-based services have been standardized for incorporation into 3rd generation wireless communications as a result of the Federal Communications Commission's FCC mandate on wireless carriers to provide Automatic Location Information ALI during emergency 911 calls. This paper presents communication model that investigates the position accuracy of a Global Standard Mobile...; Tags: FCC, Performance, Telematics, GSM, International Society For Optical Engineering, Federal Government, Wi-Fi, Wireless, Government; White papers 2006-01-27

The first optical pacemaker: According to a short news release from the Optical Society of America OSA, an international team of scientists at Osaka University in Japan has used a femtosecond laser pacemaker to control heart muscle cells. So far, this optical pacemaker will only be used for laboratory research. As writes OSA, 'exposing...; Tags: Heart, Contraction, Laser, Cell, Roland Piquepaille; Blog posts 2008-05-29
Collaborating in virtual environments: Engineers have been using collaborating tools in virtual reality environments for almost 20 years. Now, South Korean and Japanese researchers have tried to compare different experiences of users working together using the Virtual Dollhouse application where two people working together have to build a virtual dollhouse using virtual building blocks,...; Tags: Network, Environment, Object, Physics Law, Virtual Reality, Networking, Emerging Technologies, Roland Piquepaille; Blog posts 2007-12-05
Rebuilding George Washington: According to The Arizona Republic, American researchers have created realistic faces of George Washington by using 3-D scanning, forensics technology and software. They started by scanning a bust of the first U.S. President when he was 53 and developed a special software with the help of an anthropologist to build...; Tags: Engineering &, Innovation, Science &, Nature, Social Sciences; Blog posts 2007-02-18

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