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Conflicting signals can confuse rescue robots
03-02-2007 · EurekAlert!Researchers at NIST report that the radio transmissions of multiple search and rescue robots can interfere with each other and degrade performance.
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Keywords: conflicting, signals, confuse, rescue, robots, signal, robot
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- Robot, heal thyself
11-16-2006 · EurekAlert!
Joshua Bongard, at the University of Vermont, has invented robots that can self-heal. For example, they can detect a missing leg and invent ways to continue walking. Bongard's research, "Resilient Machines through Continuous Self Modeling," will appear in Science, November 17. NASA has "a need for planetary robotic rovers to be able to fix things on their own," said Bongard. Even if f they are damaged, robots must be able to continue their mission.
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- All roads lead to GUN1
03-29-2007 · EurekAlert!
Scientists have identified three different signals that indicate damage to chloroplasts -- the photosynthetic factories of plant cells that give plants their green color -- but little is known about how the signal gets passed on to the nucleus. Scientists at the Salk Institute for Biological Studies made a big step towards explaining how chloroplasts let a cell's nucleus know when things start to go wrong at the periphery so nuclear gene expression can be adjusted accordingly.
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- Enter 'Junior': Stanford team's next-generation robot joins DARPA Urban Challenge
02-17-2007 · EurekAlert!
When five autonomous vehicles, including the Stanford Racing Team's winning entry "Stanley," finished the 2005 Grand Challenge in the still Nevada desert, they passed a milestone of artificial intelligence. The robots in the 2007 Urban Challenge, however, will have to handle traffic. It is a tougher test that calls for a new generation of technology. Enter "Junior," the Stanford Racing Team's new brainchild.
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- Are all male's liars and cheaters? Yes -- if they're crayfish!
04-01-2007 · EurekAlert!
Intimidation and threats are common throughout society, whether it's in the school playground, sporting arena or boardroom. Threatening behavior is equally widespread among nonhuman animals. Individuals signal their superior strength to competitors to obtain food, resolve territorial disputes and acquire mates. Current theory insists that signals of strength should be honest. Surprisingly researchers have found that dishonest signals are used routinely during dominance disputes by male Australian crayfish.
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- Scripps Research scientists reveal pivotal hearing structure
09-05-2007 · EurekAlert!
A team of scientists made up of two laboratory groups from the Scripps Research Institute and one from the National Institutes of Health has shed light on how our bodies convert vibrations entering the ear into electrical signals that can be interpreted by the brain. Exactly how the electrical signal is generated has been the subject of ongoing research interest.
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- Robots that know when they've hit you
11-07-2007 · EurekAlert!
Roboticist Sami Haddadin lets his robot regularly hit him in the face. He is part of a team of researchers in Germany aiming to turn industrial robots into smart machines that can work alongside humans. They are programming the first industrial robot that can sense when it has hit someone and can stop movement to prevent further harm.
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- Novel salamander robot crawls its way up the evolutionary ladder
03-08-2007 · EurekAlert!
A group of European researchers has developed a spinal cord model of the salamander and implemented it in a novel amphibious salamander-like robot. The robot changes its speed and gait in response to simple electrical signals, suggesting that the distributed neural system in the spinal cord holds the key to vertebrates’ complex locomotor capabilities.
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- Astronomers find first ever gamma ray clock
11-27-2006 · EurekAlert!
Astronomers using the H.E.S.S. telescopes have discovered the first ever modulated signal from space in Very High Energy Gamma Rays -- the most energetic such signal ever observed. Regular signals from space have been known since the 1960s, when the first radio pulsar (nicknamed Little Green Men-1 for its regular nature) was discovered. This is the first time a signal has been seen at such high energies -- 100,000 times higher than previously known.
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- Biologists expose hidden costs of firefly flashes
09-19-2007 · EurekAlert!
Tufts University biologists have discovered a dark side behind the light shows put on by fireflies each summer. While it's energetically cheap for fireflies to produce their distinctive flash signals, flashier males are more likely to end up on the dinner table. The importance of these two conflicting forces could shift in different firefly populations. It is possible that this evolutionary balancing act might generate entirely new firefly species with their own distinctive flash codes.
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- Robot to rescue injured soldiers
06-06-2007 · EurekAlert!
A remote-controlled robot is being developed for the US army to rescue injured or abducted soldiers. The 1.8-meter-tall Battlefield Extraction-Assist Robot (BEAR) can go where a human can while carrying heavy loads over considerable distances. BEAR can carry a soldier while kneeling or lying down to avoid detection, while tracks on the robot's shins and thighs enable it to adapt to travelling at different positions.
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