Saturday, September 18, 2010

Scientists teach robots how to trick humans


Couple this story about robots clever enough to intentionally deceive humans with another recent story about people seeking to create self-aware A.I. that could “exceed human intelligence,” and you have a larger picture of the near-future that is either fascinating or frightening.
While creating deceptive intelligent machines has obvious applications for war, what about creating deceptive machines for sex? Hmmm … Some people might find that too much like real human relationships, eh?
Or realistic android politicians that lie and everything. That might be pointless — except that robots can be switched off.
… But I digress.
From an article at The Daily Mail:
It sounds like something straight out of Stanley Kubrick’s 2001: A Space Odyssey.
But, in a chilling echo of the computer Hal from the iconic film, scientists have developed robots that are able to deceive humans and even hide from their enemies.
An experiment by researchers at the Georgia Institute of Technology is believed to be the first detailed examination of robot deception.
The team developed computer algorithms that would let a robot ‘decide’ whether it should deceive a human or another robot and gave it strategies to give it the best chance of not being found out.
The development may alarm those who are concerned that robots who are able to practice deception are not safe to work with humans.
But researchers say that robots that are capable of deception will be valuable in the future, particularly when used in the military.
Robots on the battlefield with the power of deception will be able to successfully hide and mislead the enemy to keep themselves and valuable information safe.
‘Most social robots will probably rarely use deception, but it’s still an important tool in the robot’s interactive arsenal because robots that recognise the need for deception have advantages in terms of outcome compared to robots that do not recognise the need for deception,’ said the study’s co-author, Alan Wagner, a research engineer at the Georgia Tech Research Institute.
The results were published online in the International Journal of Social Robotics.
 Source: http://www.datelinezero.com/?p=3682 ; September 11, 2010.


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Qi



In traditional Chinese culture, qi (simplified Chinese: 气; traditional Chinese: 氣; Mandarin Pinyin: qì; Wade–Giles: ch'i; Jyutping: hei; is an active principle forming part of any living thing.


Pronounced /ˈtʃiː/ in English; [tɕʰî] in Standard Mandarin; Korean: gi; Japanese: ki; Vietnamese: khí, pronounced [xǐ])


The approximate english pronunciation of chi, like chee in cheese, should also be distinguished from the pronunciation of chi, the greek letter, which is with a hard k sound. like c in car, and a long i, similar to other greek letters phi, psi, xi.


It is frequently translated as "energy flow," and is often compared to Western notions of energeia or élan vital (vitalism) as well as the yogic notion of prana. The literal translation is "air," "breath," or "gas" (compare the original meaning of Latin spiritus "breathing"; or the Common Greek πνεῦμα, meaning "air," "breath," or "spirit"; and the Sanskrit term prana, "breath").


Definition


References to things analogous to the qi taken to be the life-process or “flow” of energy that sustains living beings are found in many belief systems, especially in Asia. In Chinese legend, it is Huang Di (the Yellow Emperor) who is identified as the one who first collected and formalized much of what subsequently became known as traditional Chinese medicine.


Philosophical conceptions of qi from the earliest records of Chinese philosophy (5th century BC) correspond to Western notions of humours. The earliest description of qi in the current sense of vital energy is due to Mencius (4th century BC).


Manfred Porkert described relations to Western universal concepts:


Within the framework of Chinese thought no notion may attain to such a degree of abstraction from empirical data as to correspond perfectly to one of our modern universal concepts. Nevertheless the term qi comes as close as possible to constituting a generic designation equivalent to our word "energy". When Chinese thinkers are unwilling or unable to fix the quality of an energetic phenomenon, the character qi 氣 inevitably flows from their brushes.


The ancient Chinese described it as “life-force” and for good reason. They believed chi permeates everything and links the parts of our surroundings together. The Tai Chi practitioner and Acupuncturist are said to understand chi energy. They likened it to the flow of energy around and through the body, linking each part forming a cohesive and functioning unit. By understanding its rhythm and flow they believe they can guide exercises and treatments to give us stability and longevity.


Although the concept of qi has been very important within many Chinese philosophies, over the centuries their descriptions of qi have been varied and may seem to be in conflict with each other. Understanding of these disputes is complicated for people who did not grow up using the Chinese concept and its associated concepts.[citation needed] Until China came into contact with Western scientific and philosophical ideas (primarily by way of Catholic missionaries), they knew about things like stones and lightning, but they would not have categorized them in terms of matter and energy. Qi and li (理, li, pattern) are their fundamental categories much as matter and energy have been fundamental categories for people in the West. Their use of qi (lifebreath) and li (pattern, regularity, form, order) as their primary categories leaves in question how to account for liquids and solids, and, once the Western idea of energy came on the scene, how to relate it to the native idea of "qi". If Chinese and Western concepts are mixed in an attempt to characterize some of the problems that arise with the Chinese conceptual system, then one might ask whether qi exists as a "force" separate from "matter", whether qi arises from "matter", whether "matter" arises from qi, or whether qi really exists at all.


Wikipedia


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Robot Invasion Welcomed in Japan

By Hiroko Tabuchi 


TOKYO — Could it be that the Japanese view of robots as friendly helpers — and not as the rebellious, violent machines that populate much of Western science fiction — is rooted in the Shinto religion, which blurs the boundaries between animate and inanimate? To the Japanese psyche, this theory goes, a humanoid and sentient robot may simply not feel as creepy or threatening as it does in other cultures.


David Guttenfelder and I quickly found ourselves wrestling with questions like this after we embarked on a yearlong project to chronicle Japan’s robot obsession. What started as an amusing technology story soon evolved into an exploration of Japanese attitudes, culture and religion.
The robotics engineers we met were philosophers, pondering questions that boggled our minds. Can robots have a conscience? If so, how do you prove it? What does a robotic future, where humans and robots live side by side, look like? And when will it arrive?
“I’m fascinated by the topic, impressed by the science and engineering, and was blown away by some of the Japanese robot developers,” David wrote. “But I’m skeptical about robots and human connection. I think that my photos on this topic are dark and occasionally funny for that reason.”
As we chronicled more and more robots and their creators, it dawned on us: nobody in Japan really has any idea what the robotic future will be.
So imaginations have run wild — in many different directions.
We watched robots working as receptionists, serving tea, running errands as hospital aides and spoon-feeding the elderly.
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Closest Encounter with Jupiter until 2022

Dr. Tony Phillips

Been outside at midnight lately? There's something you really need to see. Jupiter is approaching Earth for the closest encounter between the two planets in more than a decade--and it is dazzling.
The night of closest approach is Sept. 20-21st. This is also called "the night of opposition" because Jupiter will be opposite the sun, rising at sunset and soaring overhead at midnight. Among all denizens of the midnight sky, only the Moon itself will be brighter.
The view through a telescope is excellent. Because Jupiter is so close, the planet's disk can be seen in rare detail--and there is a lot to see. For instance, the Great Red Spot, a cyclone twice as wide as Earth, is bumping up against another storm called "Red Spot Jr." The apparition of two planet-sized tempests grinding against one another must be seen to be believed.
And what was that flash? Amateur astronomers have recently reported a surprising number of fireballs in Jupiter's atmosphere. Apparently, many small asteroids or comet fragments are hitting the giant planet and exploding among the clouds. Researchers who have studied these events say visible flashes could be occurring as often as a few times a month.Also, Jupiter's trademark South Equatorial Belt (SEB) recently vanished, possibly submerging itself beneath high clouds. Researchers say it could reappear at any moment. The dramatic resurgence would be accompanied by a globe-straddling profusion of spots and cloudy swirls, clearly visible in backyard telescopes.
Finally, we mustn't forget the moons of Jupiter because they are also having a close encounter with Earth. These are planet-sized worlds with active volcanoes (Io), possible underground oceans (Europa), vast fields of craters (Callisto), and mysterious global grooves (Ganymede). When Galileo discovered the moons 400 years ago, they were no more than pinpricks of light in his primitive spy glass. Big, modern amateur telescopes reveal actual planetary disks with colorful markings.
It makes you wonder, what would Galileo think?
Answer: "I'm getting up at midnight!"
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Saturday, September 11, 2010

Electromagnetic Pulse

The term electromagnetic pulse (sometimes abbreviated EMP) is a burst of electromagnetic radiation that results from an explosion (especially a nuclear explosion) and/or a suddenly fluctuating magnetic field. The resulting electric and magnetic fields may couple with electrical/electronic systems to produce damaging current and voltage surges.

In military terminology, a nuclear bomb detonated hundreds of kilometers above the Earth's surface is known as a high-altitude electromagnetic pulse (HEMP) device. Nuclear electromagnetic pulse has three distinct time components that result from different physical phenomena. Effects of a HEMP device depend on a very large number of factors, including the altitude of the detonation, energy yield, gamma ray output, interactions with the Earth's magnetic field, and shielding of targets.
History
The fact that an electromagnetic pulse is produced by a nuclear explosion was known since the earliest days of nuclear weapons testing, but the magnitude of the EMP and the significance of its effects were not realized for some time.
During the first United States nuclear test on 16 July 1945, electronic equipment was shielded due to Enrico Fermi's expectation of an electromagnetic pulse from the detonation. The official technical history for that first nuclear test states, "All signal lines were completely shielded, in many cases doubly shielded. In spite of this many records were lost because of spurious pickup at the time of the explosion that paralyzed the recording equipment." During British nuclear testing in 1952–1953 there were instrumentation failures that were attributed to "radioflash," which was then the British term for EMP.
The high altitude nuclear tests of 1962, as described below, increased awareness of EMP beyond the original small population of nuclear weapons scientists and engineers. The larger scientific community became aware of the significance of the EMP problem after a series of three articles were published about nuclear electromagnetic pulse in 1981 by William J. Broad in the weekly publication Science.
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Our Future Is Already in the Hands of Robots


High-Tech 'Bots in Medicine and the Military Are Still in the Model T Stage of Robotic Science

(CBS)  One of the Ten Commandments instructs us to observe one day of rest per week . . . a day of rest for HUMANS, that is. There's no commandment we know of that says a day of rest has to be observed by ROBOTS. In fact, these days 'bots are busy day and night, seven days a week, in ways and places most of us can barely imagine. Daniel Sieberg reports our Cover Story:

 The crowds, cheerleaders and mascots are not here for a football game or a basketball tournament.

This is a robotics competition called "FIRST," in which 10,000 kids from across the world descend on Atlanta and turn the Georgia Dome into a high-tech Super Bowl.

So (and this seems like an obvious question), what exactly is a robot?

Dean Kamen, the inventor of the Segway personal transportation device and founder of FIRST, replied, "Not only is 'What is a robot?' not an obvious question, I think it doesn't have an answer any more than 'What is a computer?'

"I think robot, to at least these kids, is a system of some hardware and some software with the ability to communicate and then to interact with its environment, either autonomously or through interaction with somebody, to accomplish a goal," Kamen said.

Of course, many of us think of robots as the stuff of movies . . . friends like R2D2 and C3PO, and foes like the Terminator.

The truth is that in real life robots generally can't think for themselves . . . yet. They still are really just high-tech tools.

The most recent example? Those robots that successfully capped the gushing BP well in the Gulf of Mexico.

But whether a mile below the ocean's surface or high up in the skies, today's robots are slowly becoming more intelligent and in greater demand . . . from medicine to the military . . . changing our lives from the ground up.

Colin Angle is the founder of iRobot, one of the world's largest consumer robotics companies. In 2002, the company swept the public off its feet with, well, a robotic vacuum called Roomba. And yes, it's still a robot even if it doesn't look like one.

"When we first started with Roomba, everyone thought robots were humanoid mechanical things," Angle said. "And when we went and asked people whether Roomba was a robot, they would all say no. They'd say it's an automatic vacuum cleaner or something. But over time, I think people have come to realize that you don't have to look like a human in order to be a robot."

iRobot's first big creation was the PackBot, a 40-pound remote-controlled vehicle. It even searched for the dead in the rubble of the World Trade Center.

On battlefields in Iraq and Afghanistan, thousands of PackBots do the Army's dirtiest and most dangerous jobs, like looking for and destroying improvised explosive devices or IEDs.

And the next generation of 'bots is on the march, like this small-unmanned vehicle.

Army Staff Sergeant Daniel Ruegger described how 'bots with cameras can survey an area for booby traps. "Like on a checkpoint in Iraq, you can actually do a 'peek under' mode and actually drive under the vehicle and actually see if there are IEDs or bombs mounted [underneath."

"And your eyepiece is seeing everything it's seeing, in real time?" Sieberg asked.

"Correct, real time," said Ruegger. "What I was looking at, that's exactly what I'm looking at."

Ruegger believes advance warning from a robot sentry could've prevented an attack in Iraq in 2003 that nearly killed him:

"Two grenades came over and woke everybody up. And when I was getting ready. moving so, that grenade came over the wall and landed between my legs, pushed it away and tried to maneuver away from it, the blast. And as soon as I made the corner around the Bradley, it actually injured me."

"Had you had something like this 'bot, do you think that would've been prevented?"

"100 percent, I have no doubt in my mind," he replied.

We were given a rare look inside Fort Bliss, near White Sands, New Mexico, where soldiers like Army Sergeant First Class Kenneth Colbeck put robots through rigorous testing, such as one that can hover and send video of the enemy back through the chain of command.

He said a vehicle like this "is gonna save a lot of lives."

Enthusiasm for robots on the battlefield, it seems, is only outpaced by the speed with which the military is acquiring them, says the author of "Wired for War," P.W. Singer.

"We went into Iraq with a handful of drones; we now have 7,000 in the inventory," Singer said. "We went into Iraq with zero unmanned ground vehicles that are robotic; we now have 12,000.

"And these are just the Model T Fords, the Wright Brothers flyers, compared to what's coming," he said.

Singer spent two years talking to engineers, soldiers, and high-ranking officials about the future of robots used in combat. He says that robots still have a lot of growing up to do, especially when it comes to carrying weapons.

For example, a robot right now can already hit an apple at 800 meters using a 50-caliber machine gun. It can't, though, tell the difference between that apple and a tomato, which a two-year-old can do without thinking about it.

When you take that into war, it just illustrates all the dilemmas that come out of it.

Which isn't to say we're not halfway there. Since President Obama took office, the number of remotely-controlled drone strikes has almost doubled, from Pakistan to Somalia.

And while fully autonomous robots on the battlefield may be years away, an Army report recently identified 32 different tasks for robots . . . everything from weapons loaders to armed sentries.

The report's author, Lt. General Michael Vane, says we have to change our thinking about what robots can and cannot do.

"I think what will go hand-in-hand with an armed robot in particular is the level of confidence that humans have culturally with machines over time. And so there's probably going to be a place at which we will accept or not accept armed robots in autonomy," he said.

If all this sounds like sci-fi, consider this: Americans are already placing their lives in the "hands" of robots.

Robots work in hospitals as orderlies and pharmacists. They even allow doctors to examine patients from miles away.

Last year more prostate glands were removed robotically, by surgeons like Dr. David Samadi, than the old-fashioned way.

"I'm the surgeon who does the surgery from the beginning to the end," Samadi explained. "I make the skin opening. I close the skin. And they like that."

"Because you don't look much like a robot, I have to tell you!" Sieberg said.

At New York's Mt. Sinai Medical Center, Samadi is preparing to do a prostate removal. After a few tiny incisions are made so the operating tools can be inserted, Samadi moves to a separate control area that looks like something from a video game arcade.

High-definition cameras guide Samadi as he manipulates the extremely precise arms of the robot.

"It's an extension of my arms, with a big lens, that shows you the detail of the surgery with magnification and also the high definition, but you can maneuver it anywhere," he explained. "You can navigate it all over the abdomen and get into a lot of blind spots that we would not be able to access."

Along with his robot counterpart, Dr. Samadi has performed more than 2,000 of these procedures.

Samadi says robotic surgery also comes with a long list of benefits. It's less invasive, with shorter recovery time, and there's a better chance to retain sexual function.

Does he see a day when a patient goes into the operating room and there are no humans involved, only a purely autonomous robot?

"No, no, no, we're not there yet," he said. "I think the future, you never know. I think if we have, like, very accurate images that we can give to the robot and a custom-made surgery and well-designed, you'll never know. That may happen."

Could a machine ever be 
that intelligent? Well, IBM is testing a computer system called Watson that can do what was once thought to be impossible: Beat humans at "Jeopardy."

As for who will be designing that next generation of intelligent robot, you heard it here FIRST.

Sourcehttp://www.cbsnews.com/stories/2010/07/25/sunday/main6711291.shtml  ; July 25, 2010The article is reproduced in accordance with Section 107 of title 17 of the Copyright Law of the United States relating to fair-use and is for the purposes of criticism, comment, news reporting, teaching, scholarship, and research.

Scientists supersize quantum mechanics




By Geoff Brumfiel 

A team of scientists has succeeded in putting an object large enough to be visible to the naked eye into a mixed quantum state of moving and not moving.



Andrew Cleland at the University of California, Santa Barbara, and his team cooled a tiny metal paddle until it reached its quantum mechanical 'ground state' — the lowest-energy state permitted by quantum mechanics. They then used the weird rules of quantum mechanics to simultaneously set the paddle moving while leaving it standing still. The experiment shows that the principles of quantum mechanics can apply to everyday objects as well as as atomic-scale particles.

The work is simultaneously being published online today in Nature and presented today at the American Physical Society's meeting in Portland, Oregon1.

According to quantum theory, particles act as waves rather than point masses on very small scales. This has dozens of bizarre consequences: it is impossible to know a particle's exact position and velocity through space, yet it is possible for the same particle to be doing two contradictory things simultaneously. Through a phenomenon known as 'superposition' a particle can be moving and stationary at the same time — at least until an outside force acts on it. Then it instantly chooses one of the two contradictory positions.

But although the rules of quantum mechanics seem to apply at small scales, nobody has seen evidence of them on a large scale, where outside influences can more easily destroy fragile quantum states. "No one has shown to date that if you take a big object, with trillions of atoms in it, that quantum mechanics applies to its motion," Cleland says.

There is no obvious reason why the rules of quantum mechanics shouldn't apply to large objects. Erwin Schrödinger, one of the fathers of quantum mechanics, was so disturbed by the possibility of quantum weirdness on the large scale that he proposed his famous 'Schrödinger's cat' thought experiment. A cat is placed in a box with a vial of cyanide and a radioactive source. If the source decays, it triggers a device that will break the vial, killing the cat. During the time the box is shut, Schrödinger argued, the cat is in a superposition of alive and dead — an absurdity as far as he was concerned. 

Wonderful weirdness

Cleland and his team took a more direct measure of quantum weirdness at the large scale. They began with a a tiny mechanical paddle, or 'quantum drum', around 30 micrometres long that vibrates when set in motion at a particular range of frequencies. Next they connected the paddle to a superconducting electrical circuit that obeyed the laws of quantum mechanics. They then cooled the system down to temperatures below one-tenth of a kelvin.

At this temperature, the paddle slipped into its quantum mechanical ground state. Using the quantum circuit, Cleland and his team verified that the paddle had no vibrational energy whatsoever. They then used the circuit to give the paddle a push and saw it wiggle at a very specific energy.

Next, the researchers put the quantum circuit into a superposition of 'push' and 'don't push', and connected it to the paddle. Through a series of careful measurements, they were able to show that the paddle was both vibrating and not vibrating simultaneously.

"It's wonderful," says Hailin Wang, a physicist at the University of Oregon in Eugene who has been working on a rival technique for putting an oscillator into the ground state. The work shows that the laws of quantum mechanics hold up as expected on a large scale. "It's good for physics for sure," Wang says.

So if trillions of atoms can be put into a quantum state, why don't we see double-decker buses simultaneously stopping and going? Cleland says he believes size does matter: the larger an object, the easier it is for outside forces to disrupt its quantum state.

"The environment is this huge, complex thing," says Cleland. "It's that interaction with this incredibly complex system that makes the quantum coherence vanish."

Still, he says, there's plenty of reasons to keep trying to get large objects into quantum states. Large quantum states could tell researchers more about the relationship between quantum mechanics and gravity — something that is not well understood. And quantum resonators could be useful for something, although Cleland admits he's not entirely sure what. "There might be some interesting application," he says. "But frankly, I don't have one now." 


References: 
1. O'Connell, A. D. et al. Nature doi:10.1038/nature08967 (2010).



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Tuesday, September 7, 2010

Scientists discover tiny solar panels that create themselves


File this one under "holy crap," but scientists at MIT have discovered molecules that spontaneously assemble themselves into a pattern that can turn light into electricity — essentially a self-creating solar panel. In a petri dish.


The researchers set out to create a synthetic process that imitates photosynthesis. Certain molecules respond to light by releasing electrons; the trick was discovering a substance that sticks them together in a consistent structure. Phospholipids do just that, and they also attach themselves to carbon nanotubes, which conduct electricity. With the nanotubes holding the phospholipids in a uniform alignment, the photoreactive molecules are all exposed to light at once, and the tube acts as a wire that then collects the resulting electrical current.

The most interesting part is that the tiny solar array can be disassembled and reassembled just by adding chemicals. Spray on an additive and the molecular components break apart into a soup; remove it with a membrane, and the system spontaneously puts itself together.

After repeatedly having the system go through disassembly and reassembly, the scientists found the system had no loss in efficiency. That could prove to be the best development of all, since losing efficiency over time can be a big problem with some solar systems. It all makes sense: if you want to build better solar panels, why not look for inspiration from the most successful solar-energy generators of all: plants.


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