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February 28, 2006
Decoherence- quantum mechanics
Entanglement is one of the most mysterious and fundamental properties of quantum mechanics and allows particles to have a much closer relationship than is possible in classical physics. If two particles are entangled, we can know the state of one particle by measuring the state of the other. However, entangled states are thought to vanish above a certain temperature because of thermal effects that make the system classical in a phenomenon known as "decoherence"
Posted by Vishwakarma C. K. @ 08:09 PM | Comments (0) | TrackBack
February 26, 2006
Multi-Touch Interaction Research
While touch sensing is commonplace for single points of contact, multi-touch sensing enables a user to interact with a system with more than one finger at a time, as in chording and bi-manual operations. Such sensing devices are inherently also able to accommodate multiple users simultaneously, which is especially useful for larger interaction scenarios such as interactive walls and tabletops.
Posted by Vishwakarma C. K. @ 04:20 PM | Comments (0) | TrackBack
February 25, 2006
Secrets of Longevity Genes
You can assume quite a bit about the state of a used car just from its mileage and model year. The wear and tear of heavy driving and the passage of time will have taken an inevitable toll. The same appears to be true of aging in people, but the analogy is flawed because of a crucial difference between inanimate machines and living creatures: deterioration is not inexorable in biological systems, which can respond to their environments and use their own energy to defend and repair themselves.
At one time, scientists believed aging to be not just deterioration but an active continuation of an organism's genetically programmed development. Once an individual achieved maturity, "aging genes" began to direct its progress toward the grave. This idea has been discredited, and conventional wisdom now holds that aging really is just wearing out over time because the body's normal maintenance and repair mechanisms simply wane. Evolutionary natural selection, the logic goes, has no reason to keep them working once an organism has passed its reproductive age.
Complete Article by David A. Sinclair and Lenny Guarente at Scientific American
Posted by Vishwakarma C. K. @ 06:43 PM | Comments (0) | TrackBack
February 20, 2006
Artificial Gene Design
A web-based program that simplifies many tricky steps involved in designing artificial DNA has been released by US microbiologists.
The software suite, called GeneDesign, should make it easier for researchers to modify and study DNA. The cost of gene synthesis is rapidly falling with dozens of companies around the world now offering to create genes to order from the chemical components of DNA.
GeneDesign was created by researchers led by Jef Boeke at Johns Hopkins University School of Medicine in Baltimore, US. It simplifies and automates several key steps of DNA design.
Posted by Vishwakarma C. K. @ 07:31 PM | Comments (0) | TrackBack
February 15, 2006
Biocosm
Why is the universe life-friendly? Columbia physicist Brian Greene says it's the deepest question in all of science. Cosmologist Paul Davies agrees, calling it the biggest of the Big Questions.
Complete Article @ KurzweilAI.net
Posted by Vishwakarma C. K. @ 07:53 PM | Comments (0) | TrackBack
February 11, 2006
Nano Imaging
While a microphone is useful for many things, you probably wouldn’t guess that it could help make movies of molecules or measure physical and chemical properties of a material at the nanoscale with just one poke.
Georgia Tech researchers have created a highly sensitive atomic force microscopy (AFM) technology capable of high-speed imaging 100 times faster than current AFM. This technology could prove invaluable for many types of nano-research, in particular for measuring microelectronic devices and observing fast biological interactions on the molecular scale, even translating into movies of molecular interactions in real time. The research, funded by the National Science Foundation and the National Institutes of Health, appears in the February issue of Review of Scientific Instruments.
Posted by Vishwakarma C. K. @ 05:55 PM | Comments (0) | TrackBack
February 09, 2006
Biology inspires perceptive machines
Teaching a machine to sense its environment is one of the most intractable problems of computer science, but one European project is looking to nature for help in cracking the conundrum. It combined streams of sensory data to produce an adaptive, composite impression of surroundings in near real-time.
The team brought together electronic engineers, computer scientists, neuroscientists, physicists, and biologists. It looked at basic neural models for perception and then sought to replicate aspects of these in silicon.
"The objective was to study sensory fusion in biological systems and then translate that knowledge into the creation of intelligent computational machines," says Martin McGinnity, Professor of Intelligent Systems Engineering and Director of the Intelligent Systems Engineering Laboratory (ISEL) at the University of Ulster's Magee Campus and coordinator of the Future and Emerging Technologies(FET) initiative-funded SENSEMAKER project of the IST programme.
Posted by Vishwakarma C. K. @ 07:53 PM | Comments (0) | TrackBack
February 08, 2006
Chips under your skin
KAIST has built a prototype chip it thinks solves some of the problems encountered in setting up personal-area networks that take advantage of the body's ability to conduct electricity. Computer scientists have long envisioned connecting the numerous personal electronic devices the average technology fan carries around each day, but wiring those devices together is impractical, and Bluetooth connections are prone to interference, said Seong-Jun Song, a professor at KAIST.
Posted by Vishwakarma C. K. @ 07:48 PM | Comments (0) | TrackBack
February 03, 2006
Transistors Powered by Single Electrons
Scientists have demonstrated the first reproducible, controllable silicon transistors that are turned on and off by the motion of individual electrons. The experimental devices, designed and fabricated at NTT Corp. of Japan and tested at NIST, may have applications in low-power nanoelectronics, particularly as next-generation integrated circuits for logic operations (as opposed to simpler memory tasks).
Posted by Vishwakarma C. K. @ 07:26 PM | Comments (0) | TrackBack
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