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|Scout Centennial: One World, One Promise by ElfQrin |
lifestyle Aug 01 2007, 13:04 (UTC+0)
August, 1st 2007: the dawn of a new century of Scouting
One Hundred years ago, from August, 1st to August, 8th 2007, Lord Robert Baden-Powell made a camping trip on Brownsea Island, in England, with 21 boys, starting thus the Scouting movement.
This morning all Scouts worldwide, including the ones no longer in activity, joined to celebrate the dawn of a new century of Scouting.
I did it too together with my group. I woke up at about 3:30 this morning, and we gathered at 4:30 at the foot of a local mountain that we then climbed up to the top, where we watched the dawn and then we concluded with a Mass, and we renewed our Promise.
Are you a Scout too? How did you celebrate the Scouting centenary?
|Brain Machine Moves Toy Train With the Mind by x-C-reep_Sh-o-wx |
computers Jul 23 2007, 00:05 (UTC+0)
HATOYAMA, Japan -- Forget the clicker: A new technology in Japan could let you control electronic devices without lifting a finger simply by reading brain activity.
The "brain-machine interface" developed by Hitachi Inc. analyzes slight changes in the brain's blood flow and translates brain motion into electric signals.
Hitachi, Ltd. researcher Akiko Obata wearing a head gear makes a model train run while her colleague Kei Utsugi checks a monitor screen showing a map of the blood flow in her brain during a demonstration of a new technology that reads brain activity and lets you control everyday objects without lifting a finger at Hitachi's research lab in Hatoyama, near Tokyo, Wednesday, June 20, 2007. The "brain-machine interface," developed by Hitachi, analyzes slight changes in the brain's blood flow to detect brain motion and translate it into electric signals. (AP Photo/Shizuo Kambayashi) (Shizuo Kambayashi - AP)
A cap connects by optical fibers to a mapping device, which links, in turn, to a toy train set via a control computer and motor during one recent demonstration at Hitachi's Advanced Research Laboratory in Hatoyama, just outside Tokyo.
"Take a deep breath and relax," said Kei Utsugi, a researcher, while demonstrating the device on Wednesday.
At his prompting, a reporter did simple calculations in her head, and the train sprang forward _ apparently indicating activity in the brain's frontal cortex, which handles problem solving.
Activating that region of the brain _ by doing sums or singing a song _ is what makes the train run, according to Utsugi. When one stops the calculations, the train stops, too.
Underlying Hitachi's brain-machine interface is a technology called optical topography, which sends a small amount of infrared light through the brain's surface to map out changes in blood flow.
Although brain-machine interface technology has traditionally focused on medical uses, mak...
|Teleportation method proposed by Australian scientists by x-C-reep_Sh-o-wx |
computers Jul 21 2007, 17:32 (UTC+0)
Researchers from UQ's Australian Research Centre for Quantum Atom Optics (Dr Ashton Bradley, Dr Simon Haine and Dr Murray Olsen) and Australian National University (Joseph Hope) have proposed a new way of teleporting matter waves.
“We propose a scheme which allows an atom laser beam to disappear at one location and reappear at another,” Dr Bradley said.
“We feel that our scheme is closer in spirit to the original fictional concept,” Dr Haine said.
“What differentiates our scheme from what is usually termed quantum teleportation is that our scheme does not require the sender and receiver to share entangled states, as there is no measurement step involved in sending the information.
"In this scheme the sender and receiver require a reservoir of extremely cold atoms, known as a Bose-Einstein condensate (BEC).
"BEC is a state of matter that occurs when atoms become very cold, (about 100 billionths of a degree about absolute zero).
"Due to a phenomenon known as Bose-Enhancement, all the atoms like to act the same way. This causes the atoms to act as one macroscopic matterwave, rather than a collection of individual atoms.”
Dr Haine said that sending a pulse of atoms towards a trapped condensate (BEC) and illuminating them with a control laser beam, the atoms from the pulse were stimulated to act the same way as the atoms already trapped in the BEC.
This resulted in the emission of a photon. As all the atoms in the BEC had a very well-defined momentum, the photons being emitted would follow the same direction and form a signal beam.
"We can arrange the position and momentum of each atom (quantum information) to be encoded onto the signal beam by carefully adjusting the intensity and wavelength of the control beam,” Dr Haine said.
The signal beam is then sent to a second BEC, which is also illuminated with a control laser. The atoms trapped in the BEC absorb the photon from the signal beam, and...
|Helium 3 Isotope - Future or Fiction? by x-C-reep_Sh-o-wx |
computers Jul 21 2007, 05:33 (UTC+0)
In the future, the world’s power sources may not come from windmills and corn, it may come from the moon, or beyond.
Helium-3 (He-3 or 3He) is a light, non-radioactive isotope of helium, which is rare on Earth; but is highly abundant on the moon’s outer crust. As a power source, in theory, Helium-3 is an extremely potent, nonpolluting substance with virtually no radioactive by-product. It is so powerful that they estimate that just one space shuttle load, or roughly 25 tons, could supply the entire United States’ energy needs for a whole year.
Discovered by scientists in 1939, it wasn’t until much later when the possible benefits of the substance were realized. Fusion research began in the 1950’s by the military, and ever since they have been looking for a reliable candidate that could be harnessed without producing the harmful neutron byproducts that are present in nuclear power sources today. Helium-3 was always a candidate, however there was thought to be only a few kilograms present on earth, most produced as a result of nuclear explosions. Then in 1969, the Apollo astronauts discovered that the moon was full of it. Since the moon has no protective ozone layer against the radioactive rays of the sun, it allows for more penetration and absorption on the surface. They estimate that there could be nearly 1 million tons of it on the moon, not counting other planet sources. By today’s standards, this adds up to a cash value of nearly $4 Billion a ton!
The technology behind harnessing Helium-3 is far from perfect. In fact, the technology as of today, does not exist. They say that it could take another 10 to 20 years to perfect a useable system.
The benefits of using Helium-3 are large. It is estimated that the lunar surface holds enough of the substance to power the earth for hundreds of years. Since they say it is...
|Stereotyping in the everyday school by Caty_Marooni |
lifestyle Jul 18 2007, 22:48 (UTC+0)
I hate to have to talk about this, but it disgusts me when people disregard someone because of how they act.
They dress "preppy" they are popular, and a girly girl.
They dress in all black, they are a goth and smoke pot.
They are Islamic, they are terrorists and can't be trusted.
I mean, the parents of children across the United States raise their children to think that if someone is a certain way you shouldn't talk to them.
If there is a bum sitting on the side of the road, they got there because they wasted all of their money on drugs. Talking to strangers is one things, refusing to accept a person for who they are is another.
I am pretty sure the Constitution of the United States grants everyone here freedom.
Why not look at each other as United States citizens, instead of what country they immigrated from, or how they were raised.
It won't get you far in life.
|Stay fit and stay healthy by mimil. |
sport Jul 16 2007, 23:24 (UTC+0)
Well if you exercise and eat the right foods you will succeed at more than you did when you ate junkfood. You will be able to do more things also. Remember stay fit and eat healthy. I am pretty sure that you will feel better about looking better and eating better. Memo me if you need advice.
|The Greenhouse Effect / Global Warming by TIGERZ |
more stuff Jul 12 2007, 15:06 (UTC+0)
You've all heard about it, but not everyone caring are they?!?!
it's Global Warming,and according to TV and the scientists, its here to stay unless
WE ACT NOW!!!
its a crisis that we cant just wait for it to stop!!!
the Ice lands are starting to melt up,not just causing the polar bears and penguins to drown, but the sea level will rise, causing people to have no choice but to leave their homes and move to higher ground!!!
But what can we do to stop this?
Just click on the link below to find out:
Global Warming: A Problem with Solutions
- Riku's P.O.V. - A Funny Kingdom Hearts story
Jun 22 2007, 23:53 (UTC+0)
- The Peanut Song - A funny Kingdom Hearts story
Jun 22 2007, 23:45 (UTC+0)
- Food for thoughts: if you think your life is bad
Jun 20 2007, 14:59 (UTC+0)
- DISNEY CHANNEL GAMES
Jun 18 2007, 03:52 (UTC+0)
- Site of the night
Jun 18 2007, 01:24 (UTC+0)
- Eye on the iPhone
Jun 17 2007, 23:58 (UTC+0)
- A chapter from Stand Up and Believe
Jun 17 2007, 00:16 (UTC+0)
- Man made islands??
Jun 16 2007, 04:30 (UTC+0)
- The Jaegerr Reports
Jun 07 2007, 10:50 (UTC+0)
- Bryan Billiams
Jun 03 2007, 21:59 (UTC+0)
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