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'Thought-reading' system controls wheelchair and synthesizes speech

Although some people claim their mouths operate independently of their brains, that's not usually the case. The brain sends neurological signals to the larynx, which converts them into sound. Now, what if we could use those larynx nerve signals to control things?

That's exactly what a company called Ambient is doing. Its Audeo technology basically converts "unspoken speech" (neurological signals flowing through larynx nerves when a person thinks about speaking) into control commands that can be used to guide a motorized wheelchair (video above) or synthesize speech. Pretty amazing!

Read about how it works and where to find more videos at IEEE Spectrum's Automaton blog.

Internal Strife Still Plagues Iraq's Power Grid

Over four years after major hostilities ended in the American-led intervention in Iraq, the people of the war-ravaged nation are still having a hard time getting electricity delivered on a reliable basis. Despite an ongoing effort by U.S. military and civilian engineers, in concert with their Iraqi counterparts, the massive job estimated to cost more than US $60 billion has not been able to keep the lights on in much of the country, especially in its capital, Baghdad. A New York Times report filed yesterday says that the latest blow to the official reconstruction effort comes from local authorities, backed by militias, who have decided to stop cooperating in a nationwide scheme to share electricity running through the Iraqi power grid.

In a press conference in Baghdad on Wednesday, according to reporters from the Times, the head of Iraq's electricity ministry surprisingly said that his subordinates have been encountering problems in getting local energy administrators to follow orders to manage power switching stations strung throughout the country for the good of the nation as a whole. Instead, pressure from those in control at the regional level has resulted in municipalities hording the electricity for the use of their own citizens. The Times report states that these local authorities operate under the threat of force from armed gunmen.

Due to a lack of functioning dispatch centers, Karim Wahid, who leads Iraq's central power authority, told reporters that his officials have been trying to control the flow of electricity from huge power plants in the south, north, and west by calling local engineers to request they manually switch the flow of current through power lines. But the workers refuse to follow those orders when the armed groups threaten their lives, Wahi said, and the often isolated stations are abandoned at night and easily manipulated by whoever controls the area.

This latest challenge to the reconstruction of the nation's grid follows a much more intractable problem coming from the insurgents who have been trying to cripple Iraq's central government for years in a ceaseless campaign to undermine the stability of the country, thus pressuring American and coalition forces to withdraw. Routine attacks on the towers that carry power lines into the capital have resulted in conditions that see Baghdad suffering from power outages on a regular basis. These days, the 7 million residents of the ancient capital receive electricity for no more than a few hours a day.

In a separate account earlier this month, a reporter for the Associated Press recounted many of the same facts. The AP report stated that power shortages across the country are the worst since the summer of 2003, shortly after Saddam Hussein was overthrown. It adds:

Power supplies in Baghdad have been sporadic all summer and now are down to just a few hours a day, if that. . . . Karbala province south of Baghdad has been without power for three days, causing water mains to go dry in the provincial capital.

"We no longer need television documentaries about the Stone Age," a resident of Karbala told the AP. "We are actually living in it. We are in constant danger because of the filthy water and rotten food we are having."

About two years ago, IEEE Spectrum Executive Editor Glenn Zorpette traveled through Iraq to witness the work being done to repair the mangled power grid. In the account he brought back, published in a February 2006 cover story, "Re-engineering Iraq", Zorpette wrote: "Never before has so vast a reconstruction program been attempted in the face of enemy fire or managed in the shadow of geopolitics, where infrastructure itself became a battleground." In a bit of prescience, he also noted that not all problems with the Iraqi grid going forward were going to come from the desperate insurgents. "One of the biggest challenges so far has been overcoming the mistrust of electricity officials in governorates far from Baghdad," he wrote back then. "After years of orchestrating blackouts so that Baghdad could have round-the-clock electricity, their allegiances are now often local rather than national."

Next week, we'll feature an update from Zorpette on the ongoing challenges to overcoming the seemingly endless calamities befalling the Iraqi power grid.

[Editor's Note: For a reporter's insight into what it's like to work as an engineer inside Iraq repairing the nation's infrastructure, please see "Working in a War Zone" by Glenn Zorpette.]

Flying the increasingly unfriendly skies

Like so many of us, Cragg Hines of the Houston Chronicle

traveled by air this summer. During his trip, he read an inflight magazine, in which American Airlines chairman Gerard J. Arpey called for fundamental reform in the way the U.S. manages air traffic.

That reminded Hines of an article I wrote for IEEE Spectrum back in 1997, exactly 10 years ago this month. In that cover story, â''The truth about Air Traffic Control,â'' I reported that in spite of billions of dollars spent in a patchwork of fixes and upgrades to the decades old U.S. air traffic control system, the system is essentially broken. I quoted Neil Planzer, then director of the Air Traffic System Requirements Service for the Federal Aviation Administration (FAA), and now a Boeing executive, who said that, by the year 2015, if the U.S. air transportation system does not change in any significant way, there could be a major aviation accident every seven to ten days.

Since then, I havenâ''t written much about air traffic control, because in fact, nothing much has changed. Bit and pieces of aging technology have been replaced, though that effort has been plagued by delays. For example, a project to replace aging analog radar installations with digital radar, slated to be complete by 2005, has been cut back with the completion date pushed out to 2013. And the overall processâ''radar surveillance providing aircraft position information to controllers sitting at computer workstations who use radios to give instructions to pilotsâ''remains the same. A plan to allow controllers and pilots to exchange digital text messages for non-emergency communications got people excited, but the FAA quietly canceled it. Talk of replacing radar with a GPS-based system is still talk. And a power failure at a single U.S. air traffic control facility still wreaks havoc on the entire system. Meanwhile, air traffic, though plunging after 9/11, is back on the rise; no surprise to anyone who hustled through crowded airports this summer. A recipe for a future of aviation accidents? I'm not quite so pessimistic; the future I see is one of more long waits on runways as controllers maintain safety by holding flights on the ground. And these days I travel prepared with bags full of food and water, resigned to long travel delays.

Countdown Ticking for Spectrum/Make DIY Contest

If you're a do-it-yourself type, the clock is running on submitting your latest electronics innovation to the IEEE Spectrum/Make DIY Contest. The magazines have extended the entry deadline to 9 September at midnight (ET). So now is the time to finalize your submission and get it into the hands of the judges. If your invention wins, you'll get prominent recognition at one of the world's premiere DIY events, the annual Maker Faire, as well as exposure in the magazines, which reach a readership of more than a million people who share your interests.

To enter, send a brief description of your project and an estimate of how much it cost; also include a photo, a parts list, and a schematic, if possible. You can e-mail the submission to spectrum-diy-contest@ieee.org or snail-mail it to Spectrum/Make DIY Contest, 3 Park Avenue, 17th Floor, New York NY 10016-5997, USA.

The winner will receive: coverage of his or her project in Spectrum and Make; and a free trip to the Maker Faire at the Travis County Fairgrounds, in Austin, Tex., on 20-21 October, where the project will be given a prominent demo. Runners-up will receive free issues of Make, a Spectrum ball cap, and a citation in the contest results in Spectrum magazine.

So get in the running. If you're proud of your work, show it off to the rest of the world. Enter the IEEE Spectrum/Make DIY Contest today.

Surgical robot goes 'swimming' in Florida

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Photo: Mitch Lum

Researchers at the University of Washingtonâ''s BioRobotics Lab have found a rather unusual place to field test their surgical robot: NASA's Aquarius underwater habitat off Key Largo, Florida. In the experiment, designed to test the system's remote-control capabilities, the group successfully operated the two-armed bot all the way from their lab in Seattle. But taking the robot to the underwater station was an adventure in itself.

What is the â¿¿nanotechnologyâ¿¿ chip makers are supposed to be pursuing?

In catching up with my nanotechnology news, I saw this story posted at Investorâ''s Business Daily at the beginning of the month.

It all seemed pretty alarming: government funding for nanotech is going to stop if chipmakers donâ''t start coming up with some nanotechnology breakthroughs.

I kept on reading to find out what exactly they might be talking about when they said â''nanotech chip breakthroughâ'' or â''apply nanotech to chip designsâ''â'¿yeah, you guessed it, I was never enlightened.

I am fairly naïve, but I guess I figured that chip makers were always going to run the full lifecycle of their billion-dollar fabs before completely changing chip manufacturing and making their huge investments obsolete. On second thought, maybe Iâ''m not so naïve but some others are.

I am not an â''investorâ'' so I guess I am not as savvy as the typical IBD reader, but wouldnâ''t anyone looking at how nanotech was going to work itself into the chip industry have understood this fundamental idea?

I also have to admit that I was a little stunned to see that others didnâ''t think nanotech was already being applied to chip manufacturing. I mean current chips employ 90-nanometer circuits, and IBM last year demonstrated that they can make them with dimensions of 29.9 nanometers. Doesnâ''t that fall under the oft-quoted 100-nm threshold?

Plus earlier this year, IBM scientists were able to apply nanotech self-assembly to mainstream chip manufacturing.

If nanotechnology is not making a big enough impact on chip manufacturing to make sure the politicos keep the research dollars coming, then the fault may not be in nanotech research, but fundamental capitalismâ'¿no one is going to start making a new product that requires new factories until they have completely used their old factories. Seems plain to me.

Senator Calls for Free Technology Scholarships

A leading U.S. lawmaker has issued a call for the government to offer full college scholarships to students majoring in science, mathematics, and engineering. Sen. Max Baucus (D-Mont.) told the Associated Press recently that he will propose a measure called the Education Competitiveness Act, which will earmark US $25 billion for aid to students in those areas, when the Senate reconvenes in the fall.

The bill would provide funds to students pursuing careers in the technology disciplines in order to bolster the nation's standing in today's competitive global arena. In return, recipients of the scholarships would have to perform service related to their field of interest for four years.

"I think the challenge is fierce, and I think we have a real obligation to go the extra mile and redo things a bit differently, so we leave this place in better shape than we found it," Baucus said.

According to the AP account, Baucus said the legislation is aimed at better preparing children for school and getting more of them into college to make the United States more globally competitive, particularly with countries like China and India.

In addition to the scholarship program, the proposed law would also create 25 000 merit-based scholarships for teaching students in technology pursuits, with a similar provision that they must teach in their discipline for at least four years.

"Max feels strongly that we need to place a greater emphasis on math and science," a spokesman for the senator told the AP.

The Ubiquitous Nano-Enabled Consumer Product List

It seems that ever since nanotechnology first started getting mentioned in the mainstream media, it has been incumbent upon the reporter to make a list of all the consumer products that contain nanotechnology (but of course not without first trotting out the â''1 to 100nm sizeâ'' definition).

Now we have a 287-page book that lists all these consumer products, and adds in products that contain MEMSâ'¿I suppose to lengthen the listâ'¿not quite sure.

When I first started to see these lists in news stories, I sort of saw them as big parentheses: â''Time to go on to the next paragraphâ''. But then I realized how entertaining these lists can actually become, you should try it yourself.

The ones used for the PR for this new book are some of the most entertaining yet.

Hereâ''s one: â''Lab-on-a-chip devices that can detect a heart attack in just minutesâ''. I am pretty sure when you are having a heart attack, you can detect it yourself without any aid in â''just secondsâ''.

This one had me scratching my head: â''Sensors implanted into the body to wirelessly monitor pressureâ''. After mulling this one over, I decided they meant â''blood pressureâ''. Not quite sure, but thatâ''s my pick and I am going to stick with it.

Not sure why you would need a sensor implanted in your body to monitorâ'¿well, any kind of pressure. It seems the ones they just put on the outside of your body do a pretty good job.

Oh the list goes on, and itâ''s fun. Like I said, you should try it.

Control your iPod with your teeth

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Photo: AFP/HO

The AFP has a story today about a head gear that lets people control their music players by clenching their teeth.

The thing "uses infrared sensors and a microcomputer," the AFP reports, and it was created by a Osaka University research team, which "hopes to put the device to commercial use for music players and believes it can eventually be adapted to run cellphones, wheelchairs and other products."

The photo above shows Osaka University researcher Kazuhiro Taniguchi wearing a prototype of the teeth-controlled hands-free device on his glasses.

And how does it know which button you want to push? "The computer receives a command when the user clenches his or her teeth for about one second -- which differentiates the action from other activities such as chewing gum and talking," the AFP reports, adding: "In the laboratory, grinding right teeth can play and halt music on an iPod while clenching left teeth makes it skip to the next track."

And if you wear dentures and wonder whether the device will work for you, good news: the Japanese researchers say the system "can be used by anybody who can chew food with their teeth -- real or artificial."

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