Sunday, May 31, 2009
The Grill: Dawn M. Taylor on brain-computer interfaces
The Grill: Dawn M. Taylor on brain-computer interfaces: "What are you doing at the FES Center? The goal at the center is to restore movement and function to people with paralysis from spinal cord injury, stroke or other neurological disorders. Movement is restored by applying low levels of electrical current to the peripheral nerves to activate paralyzed muscles. My particular role is to decode one's intended arm and hand movements from the brain. Basically, we are reconnecting the brain to the muscles so people can control their paralyzed limb just by thinking about doing so. Intended movements can also be used to control other technologies, such as prosthetic limbs, assistive robots or a computer mouse."
Agents which haggle and resolve conflict
Agents which haggle and resolve conflict: "A new series of algorithms which enables computerised agents to haggle and to resolve conflict have been devised by a team led by Professor Nick Jennings."
Monday, May 11, 2009
Evolving autopilots could boost space slingshots
11 May 2009 - New Scientist Evolving autopilots could boost space slingshots: "COULD space probes use genetic algorithms as autopilots to help them navigate the complexities of the solar system?
Deep-space missions such as NASA's veteran z Voyager probes often rely on gravity assists. They use a planet's gravitational field as a slingshot, which allows them to visit other celestial bodies without using up too much fuel. But programming a probe with its trajectory years ahead of time can be a problem, says Ian Carnelli of the European Space Agency in Noordwijk, the Netherlands."
"Missed launch windows, unexpected winds and misbehaving rockets mean that probes hardly ever leave Earth in the planned position or velocity, and radiation pressure from solar flares can perturb the craft's course in deep space. If the probe is out of position when it starts a gravity-assisted manoeuvre, the slingshot will be inefficient.
"In the Journal of Guidance, Control and Dynamics (DOI: 10.2514/1.32633), Carnelli and colleagues Bernd Dachwald and Massimiliano Vasile suggest that a probe could navigate for itself using a genetic algorithm (GA).
Saturday, May 9, 2009
Next Age of Discovery
WSJ.com Next Age of Discovery: "In a 21st-century version of the age of discovery, teams of computer scientists, conservationists and scholars are fanning out across the globe in a race to digitize crumbling literary treasures."
"In the process, they're uncovering unexpected troves of new finds, including never-before-seen versions of the Christian Gospels, fragments of Greek poetry and commentaries on Aristotle. Improved technology is allowing researchers to scan ancient texts that were once unreadable -- blackened in fires or by chemical erosion, painted over or simply too fragile to unroll. Now, scholars are studying these works with X-ray fluorescence, multispectral imaging used by NASA to photograph Mars and CAT scans used by medical technicians."
"By taking high-resolution digital images in 14 different light wavelengths, ranging from infrared to ultraviolet, Oxford scholars are reading bits of papyrus that were discovered in 1898 in an ancient garbage dump in central Egypt. So far, researchers have digitized about 80% of the collection of 500,000 fragments, dating from the 2nd century B.C. to the 8th century A.D. The texts include fragments of unknown works by famous authors of antiquity, lost gospels and early Islamic manuscripts."
"In the process, they're uncovering unexpected troves of new finds, including never-before-seen versions of the Christian Gospels, fragments of Greek poetry and commentaries on Aristotle. Improved technology is allowing researchers to scan ancient texts that were once unreadable -- blackened in fires or by chemical erosion, painted over or simply too fragile to unroll. Now, scholars are studying these works with X-ray fluorescence, multispectral imaging used by NASA to photograph Mars and CAT scans used by medical technicians."
"By taking high-resolution digital images in 14 different light wavelengths, ranging from infrared to ultraviolet, Oxford scholars are reading bits of papyrus that were discovered in 1898 in an ancient garbage dump in central Egypt. So far, researchers have digitized about 80% of the collection of 500,000 fragments, dating from the 2nd century B.C. to the 8th century A.D. The texts include fragments of unknown works by famous authors of antiquity, lost gospels and early Islamic manuscripts."
Friday, April 24, 2009
Simulated brain closer to thought
BBC News Simulated brain closer to thought: "A detailed simulation of a small region of a brain built molecule by molecule has been constructed and has recreated experimental results from real brains.
The 'Blue Brain' has been put in a virtual body, and observing it gives the first indications of the molecular and neural basis of thought and memory."
Just think to tweet!
Researchers use brain interface to post to Twitter (April 20, 2009): "In early April, Adam Wilson posted a status update on the social networking Web site Twitter — just by thinking about it.
Just 23 characters long, his message, 'using EEG to send tweet,' demonstrates a natural, manageable way in which 'locked-in' patients can couple brain-computer interface technologies with modern communication tools."
Just 23 characters long, his message, 'using EEG to send tweet,' demonstrates a natural, manageable way in which 'locked-in' patients can couple brain-computer interface technologies with modern communication tools."
Wednesday, April 22, 2009
Robots are narrowing the gap with humans
Robots are narrowing the gap with humans | McClatchy: "Thanks to exponential increases in computer power — which is roughly doubling every two years — robots are getting smarter, more capable, more like flesh-and-blood people.
"Matching human skills and intelligence, however, is an enormously difficult — perhaps impossible — challenge.
"Nevertheless, robots guided by their own computer 'brains'' now can pick up and peel bananas, land jumbo jets, steer cars through city traffic, search human DNA for cancer genes, play soccer or the violin, find earthquake victims or explore craters on Mars."
"A Japanese housekeeping robot can move chairs, sweep the floor, load a tray of dirty dishes in a dishwasher and put dirty clothes in a washing machine.
"Intel, the worldwide computer-chip maker, headquartered in Santa Clara, Calif., has developed a self-controlled mobile robot called Herb, the Home Exploring Robotic Butler. Herb can recognize faces and carry out generalized commands such as "please clean this mess," according to Justin Rattner, Intel's chief technology officer.
"Matching human skills and intelligence, however, is an enormously difficult — perhaps impossible — challenge.
"Nevertheless, robots guided by their own computer 'brains'' now can pick up and peel bananas, land jumbo jets, steer cars through city traffic, search human DNA for cancer genes, play soccer or the violin, find earthquake victims or explore craters on Mars."
"A Japanese housekeeping robot can move chairs, sweep the floor, load a tray of dirty dishes in a dishwasher and put dirty clothes in a washing machine.
"Intel, the worldwide computer-chip maker, headquartered in Santa Clara, Calif., has developed a self-controlled mobile robot called Herb, the Home Exploring Robotic Butler. Herb can recognize faces and carry out generalized commands such as "please clean this mess," according to Justin Rattner, Intel's chief technology officer.
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