Tuesday, July 3, 2012

Mixed Signals: Smart Phone Sensors Recruited to Deliver Indoor GPS

News | Technology

Duke University researchers are developing a mobile app that uses WiFi antennas, cellular radios and other detectors to guide smart phone users


gps,navigation,smartphoneLOCKED IN: Undergrad Alex Mariakakis tests the UnLoc system while roaming Hudson Hall on Duke University's campus. Mariakakis carries both a laptop and a smart phone, whose screen is inset in the lower right portion of the image. Image: Courtesy of Duke University, via YouTube

Global positioning system (GPS) devices may not always provide spot-on directions, but they do provide drivers, cyclists and hikers with convenient access to digital map data of every square meter of the planet shadowed by satellites. Step indoors and you will find that same GPS receiver becomes an expensive paperweight.

Indoor GPS has been in the works for at least a decade, but the plethora of interfering signals from Wi-Fi, ultrasound, cellular and other devices make it difficult for GPS units to come up with an accurate reading. Whereas a GPS discrepancy of a few meters while navigating city streets makes little difference to a driver, that same margin of error inside a big-box electronics store or hospital is likely to send users down the wrong aisle or hallway.

Instead of focusing on a single type of signal to map indoor areas, researchers at Duke University and Egypt-Japan University of Science and Technology are developing software to help smartphone users find their way by gathering information from a number of different signal types. Their UnLoc system?short for unsupervised indoor localization?gathers signal data using Wi-Fi antennas, cellular radios, compasses, gyroscopes and accelerometers.

UnLoc tags each of these signals as a virtual landmark. One example would be an elevator whose distinct pattern of movement can be detected by a smartphone's accelerometer, according to the researchers, who presented their UnLoc system on June 27 at the 10th International Conference on Mobile Systems, Applications, and Services (MobiSys 2012) in Low Wood Bay, England (pdf). Similarly, a particular corridor might be configured with a unique set of Wi-Fi access points that the smartphone can read. UnLoc envisions these kinds of signatures as internal landmarks within a building, according to the researchers, who are led by Romit Roy Choudhury, an associate professor of computer engineering at Duke. Landmark information could then be stored in individual phones or shared as part of a larger database that maps indoor environments in more detail.

The researchers have demonstrated how UnLoc works in a YouTube video. In the video, Alex Mariakakis, a Duke undergraduate student who participated in the research, navigates an on-campus building using a Samsung Nexus S Android phone. As Mariakakis walks the building's corridors, UnLoc superimposes a dot marking his progress on a map of the building's floor plan, which is stored in the phone. The researchers say that UnLoc, which can track a user's location even without a preinstalled floor plan, typically located between 10 and 20 landmarks per floor in the buildings where they tested and was accurate to within about 1.7 meters.

As mobile devices have become more powerful, a number of academics and technology companies are developing indoor localization capabilities. For instance, Google, Microsoft and Stanford University are participating in the WiFiSLAM project, which focuses specifically on using Wi-Fi signals?as opposed to the variety of signals UnLoc purports to detect?to pinpoint a smartphone user's location to an accuracy of within 2.5 meters.

Indoor localization is expected to be particularly useful in health care settings. Norway-based Sonitor Technologies sells an ultrasound-based indoor positioning system (IPS). Patients in a health care facility wear wristbands that emit ultrasonic waves, and microphones placed throughout the facility pick up the high-frequency sound. Since walls and doors effectively confine the signals to a room, Sonitor's IPS avoids signal confusion with any radio-frequency identification tags or Wi-Fi hotspots used in the same building.

Source: http://rss.sciam.com/click.phdo?i=c40ec2a23931886e77bd1eaf344814c3

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Territory row sparks anti-China rallies in Vietnam

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Source: http://news.yahoo.com/territory-row-sparks-anti-china-rallies-vietnam-164951246.html

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Insight: "Green Fleet" sails, meets stiff headwinds in Congress (reuters)

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Detroit toddler found dead in closet

By Andrew Mach, msnbc.com

A toddler was found dead inside a closet in her grandmother's home in east Detroit, only hours after she was reported missing.

Detroit police are investigating the death of 17-month-old Zyia Roch-Quelle Alyssa Turner, whose body was found early Saturday in a closet buried under piles of clothes and notebooks.

Zyia?s uncle and one other adult were babysitting her and several other children at the time of her disappearance, according to local reports.? Ten to 12 people were living in the home.

?The uncle was taking care of several children and left for a couple minutes to a bedroom and when he returned the girl was gone,? Sgt. Allan Quinn told the Detroit News. ?When he asked the other children where she was, none of them knew.?

Ziya?s family reported her missing around 4 p.m. Friday.


The family made flyers?to pass around the neighborhood, and police set up search parties, canvassing the area all evening with a K-9 unit and going door-to-door searching for clues.

About 1 a.m. Saturday, a cadaver dog picked up the girl?s scent inside the home and led police to Zyia?s body.

Zyia?s mother, Erica James, 24, told the Detroit Free Press she had no idea how her daughter got stuck in a closet.

?I [have] two closets at home and she never went in,? she said. ?She never pulled [anything] down out of the closet, so it?s strange that my baby is in the closet under 20 pounds of clothes.?

Police aren?t saying whether the death was an accident. The family believes the toddler walked into the closet and stuff accidentally fell on top of her.

Police would not comment on media reports of an arrest, saying only, ?This is an ongoing investigation and individuals are being questioned by the Detroit Police Department?s homicide investigators.?

The Wayne County Medical Examiner?s Office has completed an autopsy, but they are awaiting results of a toxicology report, which could take up to eight weeks.?

More content from msnbc.com and NBC News:

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Source: http://usnews.msnbc.msn.com/_news/2012/07/02/12524386-missing-detroit-toddler-found-dead-in-closet?lite

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Monday, July 2, 2012

Idaho isn't alone in insurance exchange quandary

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Source: http://news.yahoo.com/idaho-isnt-alone-insurance-exchange-quandary-121618147--finance.html

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Sunday, July 1, 2012

NASA's NuSTAR probe snaps first X-ray image of feeding black hole

NASA's NuSTAR probe snaps first Xray image of a feeding black hole

It was Bret Easton Ellis who coined the phrase, "The better you look, the more you see," and it appears the folks down at NASA's Jet Propulsion Lab agree. In what's considered a "first," the agency's latest space-scouring probe, the Nuclear Spectroscopic Telescope Array, has turned on its X-ray vision to capture focused images of a black hole, dubbed Cygnus X-1, feeding on a nearby giant star. By tuning into these high-energy frequencies, scientists are getting a peak into a previously unseen side of the heavens at 100 times the sensitivity and 10 times the resolution of any preceding tech. The space agency plans to use the observatory's powerful sight to suss out other known areas of mass X-ray activity like 3C273, an active quasar located two billion light years away and even explore G21.5-0.9, the fallout from a supernova within the Milky Way galaxy. NuSTAR's first tour of galactic duty will span two year's time, during which it'll attempt to record imagery from "the most energetic objects in the universe, " as well as track the existence of black holes throughout the cosmos. Impressed? Yeah, us too.

Continue reading NASA's NuSTAR probe snaps first X-ray image of feeding black hole

NASA's NuSTAR probe snaps first X-ray image of feeding black hole originally appeared on Engadget on Sat, 30 Jun 2012 07:32:00 EDT. Please see our terms for use of feeds.

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Iconic Atari turns 40, tries to stay relevant

FILE- In this June 5, 1984, file photo, a woman in Chicago demonstrates Atari's new game, Mind Link, which utilizes a headband that picks up electrical impulse from the movement of the forehead and transmits them to a receiver attached to a video game or home computer console. (AP Photo/Charlie Knoblock)

FILE- In this June 5, 1984, file photo, a woman in Chicago demonstrates Atari's new game, Mind Link, which utilizes a headband that picks up electrical impulse from the movement of the forehead and transmits them to a receiver attached to a video game or home computer console. (AP Photo/Charlie Knoblock)

(AP) ? A scruffy, young Steve Jobs worked at Atari before he founded Apple. "Pong," one of the world's first video games, was born there, as was "Centipede," a classic from the era of quarter-guzzling arcade machines. "Call of Duty" creator Activision was started by four of Atari's former game developers.

The iconic video game company turns 40 years old this week, much slimmer these days as it tries to stay relevant in the age of "Angry Birds" and "Words With Friends."

But Atari's influence on today's video games is pervasive.

Although it wasn't the first company to make video games, Atari was the first to make a lasting impression on an entire generation. At arcades ? or at video game bars such as Barcade in the trendy Williamsburg section of Brooklyn ? nostalgic patrons still gather around such Atari classics as "Asteroids," ''Joust" and "Centipede."

The Atari 2600, launched in 1977, was the first video game console in millions of homes, long before the Nintendo Entertainment System (1985), Sony's PlayStation (1994) and Microsoft's Xbox (2001).

Today's younger iPhone gamers might not remember how "Pong," that simple, two-dimensional riff on Ping-Pong, swept across living rooms and arcades in the 1970s. But they might recognize elements of it in easy-to-learn, hard-to-master games based on simple physics ? among them, "Angry Birds."

"For tens of millions of Gen X-ers, or kids who grew up in America in the '70s and '80s, Atari is a cultural icon, an intrinsic part of childhood," says Scott Steinberg, tech analyst and author of "The Modern Parent's Guide to Kids and Video Games."

"Pong," he adds, was in some ways the very first social video game, one designed to play in bars, at home or at an arcade, while spectators crowded around to watch the action.

Launched in 1972 from Atari's Silicon Valley headquarters, "Pong" featured a basic black-and-white screen (that's black and white only, no shades of gray here), divided by a dotted line. Short white lines on either side stood in for paddles. Two players controlled them and tried to get a moving dot ? the ball ? past their opponent.

With "Pong," Atari introduced video games to the masses just as Apple and Microsoft ushered in the personal computer era by bringing computers to people's desktops in the 1980s.

"It makes me think that I am getting really old," says Nolan Bushnell, the co-founder of Atari. "I'm 69, which means I was 29 when I founded Atari. It seems really young in retrospect."

It doesn't take much effort these days to see 20-something entrepreneurs in technology. Mark Zuckerberg was just 19 when he started Facebook in his Harvard dorm room. But back in the early '70s, Bushnell said, "no one in their 20s started companies. In some ways it paved the way for Apple, Microsoft and those guys."

Bushnell said Atari succeeded early on because it nurtured ideas from its engineers and computer programmers.

"We dominated not because of our manufacturing and marketing prowess but because of creativity," Bushnell says. "The lasting legacy: That creativity is a real weapon. And in some ways Apple has shown that as well."

Jobs was just 19 when Atari hired him as a technician, making $5 an hour. He worked the night shift because many of his co-workers didn't get along with him and didn't appreciate his refusal to wear deodorant, according to Walter Isaacson's recent biography of the late Apple chief executive.

He wasn't there for long ? he left the company in 1974 to travel to India and co-founded Apple two years later, in 1976.

Dona Bailey, one of the creators of "Centipede," recalls a notebook that Atari had with maybe 30 ideas for games in it.

"Most of them were laser games," says Bailey, who was the only female programmer in Atari's arcade division when she was hired in 1980 and when she left in 1982. "I wasn't really interested in war, or lasering anything, or violence."

The only ideas in the notebook that didn't have to do with "lasering things or frying things" were two sentences about a multi-segmented insect that walks out on the screen and winds its way down the screen toward the player, she says. There was implicit shooting, as the player at the bottom had to destroy the insect before getting hit by it, but "it didn't seem that bad to shoot a bug."

Thus, "Centipede" was born.

Atari, Steinberg says, pioneered a lot of the concepts that are popular in gaming today: Games should be for both men and women, and they should be social by allowing many people to compete with each other.

Atari "defined games as not just a product but a social movement," Steinberg says.

But there is a generational divide. For kids born in the '80s and later, Atari elicits a respectful nod as a retro video game icon at best ? and a clueless shrug at worst.

"It may rise again, but it remains to be seen whether Atari's place is among retail giants (such as) Activision and Electronic Arts," Steinberg says, "Or in a future that is defined by its own past."

Activision, which now makes such hit games as "Call of Duty" and "Diablo III," was founded in 1979 by four disgruntled Atari game designers who wanted more recognition for their work.

As Activision's future rose, Atari's faltered. Having cemented video games as a form of mass entertainment, Atari was sold to Warner Communications Inc. in 1976 and began to pile up big losses.

Warner, now part of Time Warner Inc., discontinued the Atari 2600 and fired Bushnell, says Stephen Jacobs, professor of interactive games and media at the Rochester Institute of Technology in Rochester, N.Y.

Meanwhile, several companies tried to capitalize on Atari's success, but flooded the market with terrible products. It was a gold rush, with little gold to be had.

Atari contributed to that decline in quality with "E.T. the Extra-Terrestrial," still considered one of the worst video games ever made ? and that's being generous.

"They tried to push something out in six weeks," Jacobs says. "They pushed out a million units of a horrible game that they were sure was just going to be the bomb. And it ended up tanking Atari."

That was the Christmas of 1982. What followed is now referred to as the "great video game crash of 1983." People stopped buying video games.

Companies began collapsing and Atari was soon sold to a man named Jack Tremiel. Over the next decade, Atari made computers, a game console called Jaguar and a handheld game machine called the Lynx. None were hits.

Atari was then passed to the toy company Hasbro, then to Infogrames Entertainment, a French company that owns it today.

Recognizing the promise of mobile devices and its best-known titles, Atari today makes such phone games as "Centipede: Origins" and "Breakout Boost," a take on the game Steve Jobs worked on back in the day.

"The legacy is that Atari is essentially where it all began," says Jim Wilson, the company's current CEO.

So is Atari living off its legacy?

"To a certain point almost all entertainment companies are doing a bunch of living on their legacy. That's why we have 'sequel-itis' in triple-A games, movies, books," Jacobs says. "Why invest in new things when you can beat the old things to death and still make money out of them?"

___

Follow Barbara Ortutay on Twitter at http://twitter.com/BarbaraOrtutay

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/495d344a0d10421e9baa8ee77029cfbd/Article_2012-06-29-Atari%20at%2040/id-e687b02de4024f5dbbf8e3a07f35e40b

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