Did Best Buy pull the PlayBook or did it sell out? (Digital Trends)

Things are not looking up for the PlayBook. Research in Motion (RIM) has been struggling to sell its debut tablet since the device hit shelves in April. Lately, RIM seems to have gotten desperate, slashing the tablet?s price from $500 to $200, and offering it for free to those who buy its BlackBerry Enterprise Server software. The sales cuts may not have been enough. Electronista ?has cited multiple reports that Best Buy dropped orders for the BlackBerry PlayBook over Thanksgiving weekend and pulled the unit from its listings.

Upon our updated check, the PlayBook does now appear on the Best Buy site, but all models of it are labeled as ?Sold Out Online? and are not available for shipping or in-store pickup, even the refurbished models. This could be due to a sales surge after the price cut, or perhaps the price cut was meant to eliminate the remaining inventory RIM had built up. Reports of canceled orders may have been due to retailers overselling the tablet and RIM deciding not to manufacture additional tablets to satiate demand.?

If you attempted to purchase the PlayBook or experienced any odd behavior from Best Buy or its site in relation to the tablet, let us know below.?

Is this the end of the PlayBook (as in RIM has sold all it will manufacture), or will it return?

This article was originally posted on Digital Trends

More from Digital Trends

BlackBerry PlayBook gets $150 discount at Best Buy

BlackBerry Playbook priced at $500 and up, pre-orders now open for April 19 release

RIM now offering PlayBook as a freebie, whatever next?

RIM?s PlayBook cut to $199 for holiday season ? now will it sell?

Source: http://us.rd.yahoo.com/dailynews/rss/personaltech/*http%3A//news.yahoo.com/s/digitaltrends/20111128/tc_digitaltrends/didbestbuypulltheplaybookordiditsellout

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Why Won't The Supreme Court Allow TV Cameras? (Time.com)

Cohen is the author of Nothing to Fear: FDR's Inner Circle and the Hundred Days that Created Modern America.

When the Supreme Court hears the constitutional challenge to President Obama?s health care program, the American people will be watching. Well, make that: they should be watching, but they won?t be able to. We live in a media-saturated age, but the Supreme Court remains a camera-free zone.

C-SPAN wrote to the court last week asking for permission to televise the health care case. C-SPAN would air the arguments itself and make the video available to other media outlets. After many years of saying no to requests like this one, it is time for the Justices to say yes.

(MORE: The Long, Sometimes Painful History of the First Amendment)

Courtrooms have traditionally been open to the public. In small-town America, the courthouse stood in the middle of the town square and citizens dropped in to watch trials ? both for entertainment and to keep an eye on how justice was being meted out.?The Supreme Court has recognized a first amendment right to attend trials ? and it has noted that having the public there actually improves the proceedings. Judges, juries, and witnesses ? like most people ? generally behave better when they are being watched.?The public?s right to be in court, however, does not always include the right to bring a camera. Many courts do allow cameras ? that was how the O.J. Simpson murder trial ended up on television. But many more do not.

The Supreme Court has a complete ban on cameras ? and as calls have grown for a change in the policy, the Justices have dug in their heels. Chief Justice John Roberts has said that ?We don?t have oral arguments to show people, the public, how we function.? Justice David Souter, who retired in 2009, once told Congress that there would be a camera in the court ?over my dead body.?

There is an obvious argument for allowing television into the Supreme Court. It would let members of the public see firsthand what the issues are and how the Justices approach them. Televised arguments would turn the American people into real participants in what occurs in the marbled halls of justice.

The case against cameras in the Supreme Court is a lot harder to figure out. At the trial level, judges worry that television coverage could intimidate witnesses ? or cause them to mug for the cameras. But in the Supreme Court, there are no witnesses. Trial judges are concerned that media coverage could influence juries. But in the Supreme Court, there are no juries.?The Justices who oppose cameras have not said much about what their objections are. Some court-watchers say members of the court seem most focused on preserving their anonymity ? that is, they do not want to be recognized when they go out in public. But it is hard to take this concern seriously. In a democracy, people who take on positions of great power should expect to sacrifice their anonymity ? and to be answerable to the people.

(MORE: Adam Cohen: Justice John Paul Stephens? Rare Look Inside the Supreme Court)

The real reason Supreme Court Justices are queasy about cameras may be a simpler one: they are simply not used to being second-guessed. The Supreme Court is not only at the top of the judicial branch ? it has the final say in disputes with the President or Congress. In other words, it is used to getting its way.?This carries over into how the court runs its own business. A case in point: conflicts of interest. There is no procedure for forcing a Justice to recuse himself or herself from a case. It is entirely their own choice. When Justice Antonin Scalia declared that he could fairly decide a case involving Vice President Dick Cheney, even though he and the vice president had just gone duck hunting together, that ended the matter.

Television cameras would be a sudden jolt of accountability for a body that is not used to it. Cameras could capture members of the court making troubling statements ? like Justice Sandra Day O?Connor?s notorious suggestion, at the Bush v. Gore argument, that Florida voters whose ballots were not counted had only themselves to blame. They could remind the public that Justice Clarence Thomas has not asked a question at an argument in years. They could even capture a Justice nodding off.

Cameras would allow the American people to keep a closer watch on what the Supreme Court is up to. That is why they seem like a bad idea to at least some of the Justices ? and a great idea to those of us who must live under the rulings they hand down.

Cohen, the author of Nothing to Fear, teaches at Yale Law School. The views expressed are his own.

Source: http://us.rd.yahoo.com/dailynews/rss/us/*http%3A//us.rd.yahoo.com/dailynews/external/time_rss/rss_time_us/httpideastimecom20111121whywonthesupremecourtallowtvcamerasxidrssnationyahoo/43679745/SIG=133f919sg/*http%3A//ideas.time.com/2011/11/21/why-won-the-supreme-court-allow-tv-cameras/?xid=rss-nation-yahoo

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Development of the brain network in the fetus now measurable for the first time in the womb

ScienceDaily (Nov. 24, 2011) ? A team of researchers at the MedUni's Clinical Department of Neuroradiology and Musculoskeletal Radiology has demonstrated for the first time ever that there are fetal brain developments that can be measured using functional magnetic resonance tomography in the womb. This means, says study leader Veronika Sch?pf, that pathological changes to brain development will be detectable earlier than they are currently -- and appropriate measures can be taken in good time.

In the study, 16 foetuses between the 20^th and 36^th weeks of pregnancy were measured. Measurements were taken of the brain's resting state networks. These networks remain in a state of readiness at rest and their activity increases after appropriate stimulation. The examinations are completely stress-free for the mothers and extend "normal" MRI scans by just a few minutes.

Functional defects are detected earlier "We have been able to demonstrate, for the first time ever, that the resting state networks are formed in utero and that these can be imaged and measured using functional imaging," explains Sch?pf, who is part of the working group led by Daniela Prayer, Head of the Department of Neuroradiology and Musculoskeletal Radiology and head of the world's leading centre for pre-natal magnetic resonance imaging at the MedUni Vienna.

This discovery means that, in future, the developmental progress of brain activity in the fetus can be measured and other findings and prognoses made regarding possible malfunctioning processes. As a result, functional defects, such as of the optic nerves or motor system, can be detected while the fetus is still in the womb -- an achievement that was previously impossible -- so that parents can be offered more informed advice and counselling, for example.

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Source: http://www.sciencedaily.com/releases/2011/11/111124150233.htm

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St Maarten finds local lionfish tainted with toxin

FILE- In this July 2006 file image released by NOAA Undersea Research Center, a lionfish swims at a depth of about 130 feet, roughly 55 miles off the coast of North Carolina. Conservationists in St. Maarten are warning islanders not to eat lionfish after tests found a naturally occurring toxin in the flesh of the candy-striped invasive species that is causing ecological damage across the region, officials said Thursday, Nov. 24, 2011. (AP Photo/Doug Kesling/NOAA Undersea Research Center, file)

FILE- In this July 2006 file image released by NOAA Undersea Research Center, a lionfish swims at a depth of about 130 feet, roughly 55 miles off the coast of North Carolina. Conservationists in St. Maarten are warning islanders not to eat lionfish after tests found a naturally occurring toxin in the flesh of the candy-striped invasive species that is causing ecological damage across the region, officials said Thursday, Nov. 24, 2011. (AP Photo/Doug Kesling/NOAA Undersea Research Center, file)

KINGSTON, Jamaica (AP) ? Conservationists in St. Maarten are warning islanders not to eat lionfish after tests found a naturally occurring toxin in the flesh of the candy-striped invasive species, officials said Thursday.

The findings have dealt a blow to the tiny Dutch territory's efforts to contain the spread of the venomous predator, a native of the Indian and Pacific oceans that has colonized large swaths of the region after a few apparently escaped a Florida fish tank in 1992.

Following the lead of other Caribbean islands, St. Maarten had hoped to promote the species as batter-fried or grilled delectables to slow their spread. They were found in the Dutch territory's waters in July 2010 and have been multiplying and gobbling up native fish and crustaceans ever since. Lionfish were first detected in the Bahamas in 2004 and rapidly spread south into the warm waters of the Caribbean.

But Tadzio Bervoets, chief of St. Maarten's Nature Foundation, said nearly half of the football-sized lionfish captured in local waters were found to have a biotoxin that can lead to ciguatera poisoning, a rarely fatal but growing menace that has long been known in the Caribbean, South Pacific, and warmer areas of the Indian Ocean.

Ciguatera poisoning is caused by eating some subtropical and tropical fish predators, including grouper, snapper and barracuda, which live by reefs and accumulate toxins through their diet. They accumulate the toxin in their flesh from eating smaller fish that graze on poisonous algae.

People who have eaten infected fish can experience abdominal pain, nausea, vomiting, diarrhea, tingling and numbness. Most patients recover in a few days. In rare, worst cases there is paralysis and even death.

No one has gotten sick from eating lionfish in St. Maarten, but the territory typically has more than a dozen cases of ciguatera poisoning each year from people eating barracuda and jacks.

St. Maarten's waters have long suffered from high levels of ciguatoxin, so Bervoets said the test results on lionfish were not a complete surprise.

Nonetheless, he added that island officials "were very much hoping that the results were negative."

"This means that we cannot safely promote lionfish as an edible species" in St. Maarten as officials are doing elsewhere, he said.

Across the Caribbean, governments and conservation groups have been sponsoring fishing tournaments, encouraging anglers to go after slow-swimming lionfish and marketing it to restaurants and diners, hoping to stave off an already severe crisis.

The U.S. Food and Drug Administration have had no official reports of illness associated with the consumption of lionfish filets.

"But in endemic areas of ciguatera, toxins have been detected at levels exceeding FDA guidance and therefore could cause illness if consumed," said FDA spokesman Douglas Karas. "The Virgin Islands is one of those areas."

In recent months, the U.S. agency has collected more than 186 lionfish from the waters around the U.S. Virgin Islands and Puerto Rico. Of these, scientists have tested 74 fish to date, with 26 percent confirmed to contain ciguatoxins at levels exceeding FDA guidance, according to Karas.

William Coles, chief of environmental education with the U.S. Virgin Islands Division of Fish and Wildlife, said the U.S. territory's fishermen know well where ciguatoxins accumulate and avoid catching fish in those endemic areas.

"So we have about the same level of concern with lionfish that we do with any other fish. But it's still a major concern," Coles said.

Across the region, it remains to be seen exactly how much impact fishing and marketing of lionfish can have. For now, it's the only hope in sight.

Scientists are still researching what keeps lionfish in check back home in their native range even as they're going gangbusters in the Caribbean, mostly untouched by the local sharks, moray eels and grouper.

Lionfish, which carry venom in a flowing mane of spines and can deliver painful stings, have also colonized swaths of the Eastern Seaboard.

Bervoets said he and his staff spend much of their free time hunting lionfish and encourage others to "hunt them and eradicate them in any which way they can."

"They are definitely multiplying. That's why it's such a shame we can't eat them here," he said Thursday in a telephone interview from St. Maarten.

___

David McFadden on Twitter: http://twitter.com/dmcfadd

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/bbd825583c8542898e6fa7d440b9febc/Article_2011-11-24-CB-St-Maarten-Lionfish/id-fe2d3a72570645508f1ace327a9f745c

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150 cars on Penn. Turnpike get stuck in goo. Who will pay?

A tanker truck leaked driveway sealant over nearly 40 miles of the Pennsylvania Turnpike Tuesday night, disabling 150 vehicles.

A flood of gooey black muck dropped from a tanker truck disabled about 150 cars and damaged an unknown number of other vehicles along a nearly 40-mile stretch of the Pennsylvania?Turnpike, officials said.

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A leaking valve on a tanker spread driveway sealant over the eastbound lanes of a long stretch of the Turnpike between New Castle and the Oakmont Service Plaza on Tuesday night, Turnpike spokesman Bill Capone said.

Turnpike operations officials on Wednesday said 150 or more cars were disabled when the sticky goo covered their tires and wheels. Some state police and turnpike maintenance vehicles had to be towed away after getting stuck in the tar-like substance, according to the turnpike operations center.

Traffic was moving normally by Wednesday morning, but the sticky mess had already hindered the travel plans of some motorists traveling for the Thanksgiving holiday.

Laura Frick told WTAE-TV she was traveling from Cleveland to New Jersey for the holiday.

"Now we have to turn around and go back home," Frick said. "It's horrible."

Retired firefighter Bob King told the Pittsburgh Tribune-Review the experience was the most harrowing of his life.

"It caught us off guard," said King, who now lives near Chicago. "It didn't seem like anyone knew what it was or what to do. It had to be an incredible amount of tar. It's still piled on my tires."

Cpl. Mike Corna, with the state police barracks which patrols the pike near Pittsburgh, said Wednesday the driver will be cited for not properly securing his load, though the specific tickets to be issued were still being determined. Police have yet to trace the origin of the load. The tank was filled somewhere in Ohio.

Maintenance crews got out quickly, dumping sand on the pooled goop and using snow plows to push it on to the shoulder, turnpike spokesman Carl DeFebo said. The mess was mostly confined to the right lane and the roadway didn't have to be shut down while workers tried to clean it up because the substance hardens in about 15 minutes, DeFebo said.

"It's been cleaned up since about 11 o'clock last night," DeFebo said Wednesday.

Turnpike officials urged motorists whose cars were damaged to stop calling its operations center and instead call Traveler's Insurance at 800-238-6225 and follow the prompts to file "business claims."

The insurance company is handling claims on behalf of Marino Transport Services of Stevensville, Md., which operates the truck.

Source: http://rss.csmonitor.com/~r/feeds/csm/~3/a9WozFV4K9k/150-cars-on-Penn.-Turnpike-get-stuck-in-goo.-Who-will-pay

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LightSquared teams with Soundtracker, gives access to 11 million tunes on-the-go

Nothing puts a pep in our step like streaming a little LMFAO radio on our smartphone and busting out a move or two. Until, of course, we see the astronomical data charges from our personal dance party at the end of the month. Hoping to lessen the blow to our wallets while keeping the party pumping, broadband network provider LightSquared is teaming up with internet radio purveyor Soundtracker to give customers access to 11 million songs stored in the cloud. The bundle will give dancing fools a portal into the world of music from wherever they are, without having to worry about racking up the ridiculous data charges associated with streaming radio -- something we can all get down to. We assume this means the cost of bandwidth will be folded in with the subscription costs, but neither party's spilling the beans on how much that'll be. Check out the full PR after the break.

Continue reading LightSquared teams with Soundtracker, gives access to 11 million tunes on-the-go

LightSquared teams with Soundtracker, gives access to 11 million tunes on-the-go originally appeared on Engadget on Wed, 23 Nov 2011 10:44:00 EDT. Please see our terms for use of feeds.

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Cyprus to launch new offshore oil and gas search (AP)

NICOSIA, Cyprus ? Cyprus will launch a new licensing round for more exploratory drilling for offshore oil and gas in four to six weeks, an official said Wednesday, a move underscoring its right to search for energy sources which rival Turkey strongly disputes.

Government spokesman Stefanos Stefanou says the Cabinet authorized officials to prepare a call for bids to drill inside the island's 17,000 square-mile (51,000 square-kilometer) exclusive economic zone.

"With today's decision ... the government once again stresses its determination to exercise its sovereign rights within the Cyprus Republic's exclusive economic zone always, according to international law," Stefanou said.

Cyprus was split into a breakaway Turkish-speaking north and an internationally recognized Greek-speaking south in 1974 when Turkey invaded after a coup by supporters of union with Greece.

Turkey doesn't recognize Cyprus as a sovereign state and opposes any Greek Cypriot energy search on the ground that it undermines the rights of Turkish Cypriots to any oil and gas wealth. Turkey has responded by recently carrying out its own seismic search for fuel sources in the Mediterranean and by signing a maritime accord with the Turkish Cypriots.

On Wednesday, TPAO, the Turkish state-run petroleum company, signed a deal with Royal Dutch Shell to search for oil and gas off Turkey's south coast and onshore in the country's southeast region.

Cyprus' exclusive economic zone is divided into 13 blocks and Stefanou said bids will be invited for all 13, except the one where the U.S. firm Noble Energy is now drilling.

Cyprus licensed Noble in 2008 to drill inside a block about 115 miles (185 kilometers) south of this island, close to a huge Israeli gas field. The company estimates the Cypriot field may hold between 3 and 9 trillion cubic feet (85-250 billion cubic meters) of natural gas.

Cypriot officials said a more precise estimate will be announced early next month once drilling concludes.

Source: http://us.rd.yahoo.com/dailynews/rss/energy/*http%3A//news.yahoo.com/s/ap/20111123/ap_on_bi_ge/eu_cyprus_drilling

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Smith leads streaking 49ers past Cardinals 23-7

/

By ANTONIO GONZALEZ

updated 11:13 p.m. ET Nov. 20, 2011

SAN FRANCISCO - Alex Smith emerged from the pelting rain with his jersey soaked, cleats tattered with chunks of mud and the tape around his ankles stuck to his damp skin.

Never looked better in a 49ers uniform.

Through seven years of boos and banter, losses and letdowns and a series of injury setbacks, Smith walked off the field on a soggy Sunday at Candlestick Park guaranteed of a winning season for the first time in his NFL career.

And it's only Week 11.

Smith threw for 267 yards and two touchdowns and the San Francisco 49ers forced five turnovers to blow past the Arizona Cardinals 23-7, moving oh-so close to clinching the NFC West in near record-setting fashion.

"You chase perfection like that, you're never going to be perfect but it doesn't change your mindset," said Smith, the 2005 No. 1 overall pick out of Utah. "It's certainly not like we're making all the plays out there, and today was evidence of that. We left a lot out there."

Not as much as he once did.

Smith tossed scores to Kyle Williams and Vernon Davis on the first two drives of the third quarter to help the 49ers pull away for their eighth straight victory. San Francisco (9-1) could wrap up the NFC West with a win at Baltimore on Thursday and a loss by Seattle against Washington next weekend.

The earliest team to clinch a division was the 1985 Chicago Bears in Week 11, according to STATS LLC. Three others have clinched in 11 games.

Now the 49ers, without a playoff appearance or winning record since 2002, can join them and push forward to bigger prizes.

"You come to the point where you just can't always concede the last shove, there's always going to give you the final shove," first-year 49ers coach Jim Harbaugh said. "You can't do it that way, you can't play it that way."

San Francisco plans to play hard until the end.

Donte Whitner, Patrick Willis and Dashon Goldson all intercepted passes by John Skelton. The quarterback for the Cardinals (3-7) lost for the first time in three starts this season in place of the injured Kevin Kolb.

The conditions turned out to be just perfect for San Francisco's style.

With a chilly rainstorm pelting the Bay Area since Saturday, the 49ers defense bullied and bruised Arizona all over a slick field. The Cardinals converted only two first downs in the first half and didn't make it past midfield until late in the third quarter.

"Their thing is keep the game close, don't give up no big touchdowns and then get three points and three points, maybe get a score," Arizona defensive tackle Darnell Dockett said "And that's how they win the game."

Once the rain subsided and a rainbow formed in the north sky above Candlestick, the 49ers finally opened up an otherwise passive passing game.

Smith connected with Williams on a route to the near pylon in the third quarter. Williams stretched over the goal line as he was tackled to complete the 8-yard TD catch.

After Skelton sailed a pass that Whitner stood under for an easy interception, Smith rallied San Francisco for another quick score.

He found Davis for an 18-yard touchdown to put San Francisco ahead 23-0. The tight end leaped over sideline cameramen and flexed his muscles to a rain-soaked crowd covered in ponchos and umbrellas in celebration.

Far too much for Arizona's anemic offense to overcome.

Skelton had won the previous two games against St. Louis and Philadelphia since replacing Kolb, who's out with a right foot and toe injury. Skelton was 6 of 19 for 99 yards and was benched after throwing his third interception in place of third-string quarterback Richard Bartel to start the fourth.

So much for that budding quarterback controversy.

Even Bartel's only highlight came on a shaky pass between two defenders that landed in Fitzgerald's hands for a 23-yard touchdown for Arizona's lone score. The Cardinals dropped their fifth straight to the 49ers.

About the only fight Arizona showed came in the fourth quarter when Early Doucet appeared to hit Goldson after the defensive back sacked Bartel. Goldson came up and threw two punches to Doucet's shoulder pads and facemask, getting a 15-yard personal foul penalty and an ejection.

The main fight was utter domination.

San Francisco outgained Arizona 431 to 229 yards of total offense. The 49ers also held the ball for more than 44 minutes and even got away with three missed field goals and a slowed-down running game.

"We take pride in outworking people," Whitner said. "We're happy about the win. But our long-term goals, we want to compete for a championship."

The slick, sloppy surface at the start gave way to several slips.

Frank Gore started despite a right knee injury that knocked him out of a win over the New York Giants a week earlier, finishing with 88 yards rushing. He needs 61 more to pass the late Joe Perry (7,344) for San Francisco's career rushing mark.

David Akers had been one of the NFL's most reliable kickers ? making 15 straight field goals ? until a field flooded with water soaked his streak. He converted field goals from 43, 29 and 22 yards in the first half but had two kicks blocked and pulled another wide right.

Calais Campbell swatted the first attempt from 46 yards and Patrick Peterson blocked one from 30 yards. After Willis intercepted a pass by Skelton, the 49ers' offense stalled and Akers lost his footing and sent a 49-yard attempt wide right.

The 49ers regained their rhythm in the second half and the one hiccup Smith showed came late.

He seemed to misread coverage and lofted a short pass that was intercepted in the end zone by Daryl Washington in the fourth quarter. Smith completed 20 of 38 passes in one of his best games of the season.

The only time he threw for more this season was when he had 291 yards in a win at Philadelphia.

"I really think," Smith said, "we all understand what we can be when we're rolling."

Notes: Cardinals DT Dan Williams was carted off field with a broken left arm in the fourth quarter. ... Davis' TD was the 34th of his 49ers career, passing Brent Jones for the most by a tight end in franchise history. ... 49ers FB Bruce Miller left with a concussion in the first half, the team said. He is day to day. ... Cardinals RT Brandon Keith also left with a concussion in the first half and will be revaluated Monday.

___

Follow Antonio Gonzalez at: www.twitter.com/agonzalezAP

Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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Young authors drive to remember

PFT: For one drive Sunday night, Eagles quarterback Vince Young reminded everyone what made him so special when he was ripping off victories as a rookie with the Tennessee Titans.

Young leads Eagles past Giants

Vince Young threw a go-ahead 8-yard touchdown pass to Riley Cooper with 2:45 to play as undermanned Philadelphia beat the Giants 17-10.

Source: http://nbcsports.msnbc.com/id/45379980/ns/sports-nfl/

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Deficit 'Supercommittee': Super-Failure Blame Game (ABC News)

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Unemployment drops in three-quarters of US states (AP)

WASHINGTON ? Unemployment rates fell in three-quarters of U.S. states last month, a sign that many parts of the country are experiencing modest job gains.

Unemployment rates fell in 36 states in October and rose in only 5, the Labor Department said Tuesday. Rates were unchanged in 9 states. That's the best showing since April, when rates fell in 39 states.

Nationally, the unemployment rate ticked down to 9 percent in October, from 9.1 percent the previous month. Employers added a modest 80,000 net jobs last month and the previous two months were revised to show much stronger gains.

Still, at least 125,000 jobs a month are needed to keep up with population growth, and at least double that amount to rapidly reduce the unemployment rate.

Nevada had the nation's highest unemployment rate for the 17th straight month. It was unchanged at 13.4 percent. California had the second-highest rate at 11.7 percent. Mississippi and Michigan had the next highest rates, both at 10.6 percent.

North Dakota reported the nation's lowest unemployment rate, at 3.5 percent. It was followed by Nebraska, at 4.2 percent.

Unemployment rates in Alabama, Michigan and Minnesota all dropped by a half of a percentage point ? the biggest declines among states.

Hawaii, Illinois, Indiana, Louisiana and Oklahoma all reported small increases in their unemployment rates.

Employers added jobs in 39 states. Payrolls declined in 11 states.

Illinois added 30,000 jobs, the most among states. It was followed by California, which added 25,700.

Illinois' job growth appears to have encouraged many people who had stopped looking for work to resume job searches, increasing the size of the labor force. That caused the unemployment rate to rise, despite the job gain.

Wisconsin reported the biggest job loss, a drop of 9,700, followed by New York, which shed 8,300.

There have been some signs in recent weeks that the economy and hiring may pick up soon. The number of people seeking unemployment benefits fell to a seven-month low last week. Retail sales also grew at a healthy pace in October.

The economy expanded at a 2 percent annual rate in the July-September quarter, the Commerce Department said Tuesday. That was below an earlier estimate of 2.5 percent. But the drop was mostly because companies cut back on their stockpiles of goods, probably because they expected consumer and business demand to slow.

If demand remains steady, businesses may have to boost inventories in the current quarter, leading to stronger growth. Many economists forecast growth will accelerate to about 3 percent in the October-December quarter.

Source: http://us.rd.yahoo.com/dailynews/rss/economy/*http%3A//news.yahoo.com/s/ap/20111122/ap_on_bi_ge/us_state_unemployment

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New "Twilight" film takes $283.5 million global bite (Reuters)

LOS ANGELES (Reuters) ? The new "Twilight" vampire movie opened with a massive $283.5 million in worldwide ticket sales over the weekend as passionate fans filled theaters for the beginning of a two-part finale for the hugely popular supernatural love story.

"The Twilight Saga: Breaking Dawn: Part 1" captured an estimated $139.5 million in the United States and Canada, distributor Summit Entertainment said on Sunday. That ranked as the fifth biggest domestic opening of all time.

The movie's performance beat studio forecasts for the film, which shows young lovestruck human Bella wedding vampire Edward and becoming pregnant. Summit had predicted as much as $125 million domestically while other box-office analysts had estimated $140 million.

Internationally, "Breaking Dawn" added $144 million in 54 countries over the weekend.

The movie cost about $110 million to make.

The domestic opening ranked as the year's second-highest, behind only the "Harry Potter" finale over the summer. "Harry Potter and the Deathly Hallows - Part 2" pulled in a record $169 million during its debut weekend in July.

But "Breaking Dawn," the fourth movie in the series, failed to top the previous domestic opening-weekend record for a "Twilight" film. "New Moon" debuted to $142.8 million in 2009.

Eighty percent of the film's audience was female, the core fan base for the story based on novels from Stephanie Meyer. Diehard fans of the books have embraced the screen adaptations including the latest movie, said Richie Fay, Summit's president of domestic distribution.

"We delivered to the audience ... exactly what they wanted to see," Fay said. He said the movie's success "bodes well for Breaking Dawn - Part 2," which hits theaters in 2012.

"Breaking Dawn" brought in an average of $34,351 at more than 4,000 screens in North America (U.S. and Canada) from midnight showings early on Friday through Sunday.

The "Twilight" series is one of Hollywood's most lucrative franchises. To date, the franchise has rung up more than $2 billion from box offices worldwide, according to Hollywood.com Box Office.

The series stars Kristen Stewart as human Bella Swan and Robert Pattinson as her blood-sucking vampire love, Edward Cullen. Taylor Lautner plays Jacob Black, a werewolf who competes for Bella's affection.

Critics generally disliked "Breaking Dawn," with just 27 percent giving a favorable review on aggregation website Rotten Tomatoes. Audiences were far more upbeat, scoring the movie a B+ on average, according to survey firm CinemaScore. Females gave the movie an A-.

'TWILIGHT' ECLIPSES OTHER FILMS

The "Twilight" phenomenon overshadowed all other movies over the weekend. Dancing penguin sequel "Happy Feet Two" earned $22.0 million, below studio forecasts for the 3D animated film.

"It was a very difficult weekend. Twilight certainly controlled the marketplace, especially the female audience," said Dan Fellman, head of domestic distribution for Warner Bros. Fellman said he had hoped for an opening around $30 million but expected the movie would gain ground during next week's Thanksgiving holiday and throughout the holiday season.

Action movie "Immortals," last weekend's box-office leader, finished in third place with $12.3 million. Comedy "Jack and Jill," starring Adam Sandler playing a brother and sister, earned $12.0 million to take fourth place for the weekend.

Fifth place belonged to animated family movie "Puss in Boots," a spinoff from the blockbuster "Shrek" series. "Puss" pulled in $10.7 million domestically over the weekend.

Also this weekend, "The Descendants" starring George Clooney as a father reconnecting with his daughters opened in a small number of theaters. Touted as an Oscar contender, the film brought in $1.2 million from 29 locations, or $42,150 per theater. Distributor Fox Searchlight, a unit of News Corp, will bring the movie to more than 400 theaters next weekend.

"Breaking Dawn" was released by independent studio Summit Entertainment. Time Warner Inc unit Warner Bros. released "Happy Feet Two." Privately held Relativity Media released "Immortals." "Puss in Boots" was produced by DreamWorks Animation and distributed by Paramount Pictures, a unit of Viacom.

(Reporting by Lisa Richwine, Editing by Sandra Maler)

Source: http://us.rd.yahoo.com/dailynews/rss/movies/*http%3A//news.yahoo.com/s/nm/20111120/film_nm/us_boxoffice

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A rally could happen in week ahead but some big "ifs" (Reuters)

NEW YORK (Reuters) ? Wall Street is in for a volatile week as escalating problems in Europe's debt crisis continue to keep investors on their toes.

With light trading volume expected next week due to the U.S. Thanksgiving holiday on Thursday, intraday swings are likely to be wide and frequent as traders instantly react to headlines out of Europe.

In addition, a 12-member "super committee" in Congress has until midnight on Wednesday to strike a deal involving tax increases and spending cuts to rein in federal spending. Investors are concerned that failure to reach a deal would result in automatic reductions that would harm the fragile recovery.

But with Wall Street poised for a technical rebound after finishing the worst week in two months, some say there are a lot of variables that could spark a rally.

If the super committee can come up with a workable deficit-reduction plan and if progress can be made in Europe, "the stage could be set for a fourth-quarter rally that might surprise even the most bullish traders," said Randy Frederick, managing director of trading and derivatives for Schwab in Austin, Texas.

"Of course, those are some mighty big 'ifs.'"

GERMAN BUNDS

European debt yields, an important risk barometer for investors these days, have shown exceptionally high correlation to equities. For the past several weeks, stocks have quickly reacted to moves in Italian, Spanish and French yields.

Now, there could be a new worry in German Bunds.

"We do have a new uncertainty that has gotten a bit of attention over the past few days and that is the selloff in the German Bund market. There has been heavy selling by Asian real money investors in Bunds the last few days," said Chuck Retzky, director of the futures division of Mizuho Securities USA in Chicago.

"The Bund market is considered to be one of the safe havens for investors' money in the world and if that should show a significant crack and the selling pressure continues, then people will worry if U.S. Treasuries will see a similar selloff in the future," he said.

On Friday, the Dow and S&P erased losses as the yield on Spanish 10-year bonds eased.

Spanish elections set for Sunday could help support a rise in the euro against the dollar in the very near term because the opposition party, which is seen as favoring austerity measures, is expected to win.

TECHNICALLY SPEAKING

The S&P 500 (.SPX) fell 3.8 percent on the week, ending its worst week in two months, but the index closed above its 50-day moving average near 1,200, showing signs of strength to move up higher.

"Our expectation is that the recent market selloff is not the beginning of a whole scale, multimonth downside collapse, but rather is likely the latter stages of a pause following a surge in October, and another upside rally attempt will develop shortly," said Robert Sluymer, analyst at RBC Capital Markets in New York.

"The overall technical set-up has not materially changed in the past few weeks."

For the week, the Dow Jones industrial average (.DJI) fell 2.9 percent and the Nasdaq (.IXIC) lost 4 percent.

Next week's economic data includes existing home sales for October on Monday and third-quarter preliminary GDP report on Tuesday. On Wednesday, durable goods orders, personal income and outlays and weekly jobless claims are due. The markets will be closed on Thursday for Thanksgiving.

(Reporting by Angela Moon; Additional reporting by Doris Frankel in Chicago; Editing by Kenneth Barry)

Source: http://us.rd.yahoo.com/dailynews/rss/stocks/*http%3A//news.yahoo.com/s/nm/20111119/bs_nm/us_usa_stocks_weekahead

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App for That: How to schedule employee shifts on iPad

There are hundreds of thousands of iPhone, iPod touch, and iPad apps for just about everything — so how come the one you need, the one you know just has to be there, is so hard to find? Enter TiPb’s new weekly feature where staff and readers alike sort...

Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/cHe19ZwxJ6I/story01.htm

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Dying to Quit: The Story of How and Why I Quit Smoking (ContributorNetwork)

COMMENTARY | I began smoking at the ripe old age of 12.

At first it was just a few a week, whatever my friends and I could steal from our parents, but then it became more. As friends' siblings crossed the age 18 threshold, they for an extra dollar would bring a pack or two for us and it became a regular thing. I smoked to stop eating, I smoked to lose weight. I smoked to stay awake, relieve stress, and be a "badass."

As much as I hate to say it now, I smoked during the pregnancy of my first child, which I had at 17. I smoked in fact, up until the first ultrasound of the pregnancy of my second child at age 19. Then my life changed. I had an emergency ultrasound at about 11 weeks because her heartbeat was irregular, and I had lost 10 pounds, weighing in at 120 pounds, and was severely dehydrated. I am 5-foot-8. Seeing her little body on the screen, being told that she was so very small for where she should really be, and being hooked up to line after line of IV fluids, talking with the doctor and a nutritionist about what I was doing that needed to change we set a plan. I had to report in weekly. We took baby steps. "Every time you want to light up that smoke, remember how scary it was when we could not find the baby's heart beat."

Enough said. I quit. The last smoke I had, I had going in to the doctors office that morning. A joke I heard at the time went something like this, "I am good at quitting (smoking), I have done it hundreds of times!" People tell me I am lucky I got a "warning" like the above. She died and was born still, a few months later. Was it due to smoking? No. But it sure did not help matters. After her death I vowed, as long as I was "planning" to have a child, or not taking precautions not to, I would be as healthy as I could in the event I became with child again. That blessing arrived to me a year later.

To this day, I still enjoy the smell of lit cigarettes. But nearly a decade removed, I have never started to smoke again. I am not bothered when others do it, as it should be my choice to or not to, as it was mine for so many years. But maybe in high school, when kids are carrying around the "egg" or "flour" babies, the smoker kids should carry around and oxygen tank as preparation for the future. Give them knowledge, as in a group you can't save them all, but you may be able to save a few.

Source: http://us.rd.yahoo.com/dailynews/rss/seniors/*http%3A//news.yahoo.com/s/ac/20111117/hl_ac/10457783_dying_to_quit_the_story_of_how_and_why_i_quit_smoking

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Federal court issues new political maps for Texas (AP)

AUSTIN, Texas ? A federal court has issued new political maps for the 2012 election in Texas that some say will give Democrats a greater chance of winning seats in the Legislature.

The maps will stay in place until a lawsuit challenging earlier maps drawn by the Republican-controlled Legislature is resolved.

The lawsuit claims the maps drawn by lawmakers prevent minority groups from electing their choice of candidate. A federal court also has refused to approve the original maps in a separate case in Washington after agreeing there's sufficient evidence to question whether the new maps hurt minority representation.

Lawmakers redraw districts every 10 years to reflect changes in the U.S. census. Texas is among states with a history of racial discrimination that must win federal approval of new maps.

Source: http://us.rd.yahoo.com/dailynews/rss/uscongress/*http%3A//news.yahoo.com/s/ap/20111117/ap_on_re_us/us_texas_redistricting

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Google Filed Patents For Android Pattern Unlock And Gesture-Based Controls

Back in the early days of Android, people ooh-ed and aah-ed over every little thing, even the seemingly-innocuous pattern unlock feature. It appears that Google has bigger plans for that lockscreen, as they have been granted patents for both the pattern unlock method and a way to control applications with definable touch gestures.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/1H3VRaKL-ZY/

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Netflix Outs Redesigned Android Tablet App, New iPad Version Hitting In A Few Weeks

Netflix took to the wires this morning to announce a new look for its Android tablet app. Gone is the old beige and red scheme (finally). In its place is an immersive user interface that takes full advantage of cover art. It's swanky and a tad reminiscent of the latest set-top box version.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/aWEWsnlDqFk/

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TV viewing poses greater risk than computer use for cardiovascular disease

Thursday, November 17, 2011

Physical activity will definitely lower children's chances of developing cardiovascular disease down the road, but physical inactivity will not necessarily increase it. Findings from a recent Queen's University study shows different kinds of sedentary behaviour may have different consequences for young people's health.

"Even if a child is physically active, this activity is really only making up a short period of their whole day, so it's important to look at other aspects of their day to see what's going on. Part of that is the kind of sedentary behaviours they engage in," says Valerie Carson, a doctoral candidate in the School of Kinesiology and Health Studies at Queen's.

Previous research has identified high volumes of sedentary behaviour as a risk factor for cardiovascular diseases in adults. But among the children she surveyed, Ms. Carson found no general connection between the volume of sedentary behaviour and the risk of developing diabetes or coronary heart disease.

Instead, she noticed some types of sedentary activities having a greater impact on children's health than others. Specifically, high levels of TV viewing predicted higher cardio-metabolic risk, whereas high computer use did not.

One possible explanation is that TV viewing falls near the bottom on the scale of energy expenditure, according to some research. Another is that activities like snacking between meals that usually go hand-in-hand with specific kinds of screen times may be causing the associated health risks.

"The take home message is that we want children to be more physically active, but then, at the same time, we need to think about what they're doing the rest of the time," explains Mr. Carson. "Our study suggests we should also limit children's television viewing time."

###

Queen's University: http://www.queensu.ca

Thanks to Queen's University for this article.

This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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Source: http://www.labspaces.net/115287/TV_viewing_poses_greater_risk_than_computer_use_for_cardiovascular_disease

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Buffett: European concerns, US housing woes linger (AP)

OMAHA, Neb. ? Billionaire investor Warren Buffett says Europe's debt concerns and the anemic U.S. home construction business will continue to hurt the economy even though many businesses are performing well.

Buffett told CNBC on Monday that the recent leadership changes in Italy and Greece should help, but investors are losing confidence in the euro. And Buffett said Europe doesn't have anyone with the authority to take the measures needed to defend the currency.

He said stopping a run on a currency is difficult. He said that when the U.S. economy began to contract in late 2008, the Federal Reserve and Treasury were willing to do whatever it took to revive business.

Buffett says no one in Europe has comparable authority to the Federal Reserve.

"They have a situation where they found a fundamental flaw in that they can't print money," said Buffett, who is chairman and CEO of the conglomerate Berkshire Hathaway Inc.

Buffett said much of the American economy is performing well, but any business related to residential home construction continues to struggle because of the oversupply of homes.

"You have a huge segment of the U.S. economy that's doing quite well, and you have a segment that's in a depression," Buffett said.

Berkshire owns a variety of roughly 80 businesses, and Buffett uses reports from those companies to gain insight into the economy. He said several of Berkshire's biggest subsidiaries, such as Burlington Northern Santa Fe railroad, will post record years. But Berkshire's housing-related businesses, like Acme Brick and Shaw Carpet, continue to struggle.

But Buffett said he doesn't think the U.S. housing market needs more government stimulus from either Congress or the Federal Reserve. He says what's needed is for more households to be created and that will happen over time.

"It doesn't solve itself as fast as people like, but it does solve itself," Buffett said.

Buffett said he met informally with officials from the Securities and Exchange Commission in June to answer questions related to Berkshire's $9 billion purchase of specialty chemical maker Lubrizol earlier this year.

That deal generated headlines in the spring after it was revealed that former Berkshire executive David Sokol had bought nearly 100,000 Lubrizol shares for about $100 apiece in early January, when he knew Lubrizol's board had been discussing a possible Berkshire acquisition. Sokol resigned after disclosing his trades to Berkshire.

Buffett said he and Berkshire officials cooperated with the SEC, but he doesn't know what government investigators are planning. Buffett has called Sokol's actions unethical and inexcusable.

Sokol has denied any wrongdoing in the Lubrizol deal, and he says he left Berkshire to start his own firm.

Later Monday, Buffett is scheduled to speak at an event to raise money for one of his favorite charities, Girls Inc. Buffett will be interviewed by a CNBC reporter at the luncheon event at Omaha's CenturyLink Center Arena.

Girls Inc. provides educational and recreational programs for girls.

___

Online:

Berkshire Hathaway Inc.: http://www.berkshirehathaway.com

Source: http://us.rd.yahoo.com/dailynews/rss/economy/*http%3A//news.yahoo.com/s/ap/20111114/ap_on_bi_ge/us_buffett_economy

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Bus driver wants Matthew Fox countersuit tossed (omg!)

CLEVELAND (AP) ? A U.S. bus driver who claims she was punched by "Lost" actor Matthew Fox is asking that the actor's lawsuit against her be tossed out.

Fox filed a countersuit against Heather Bormann earlier this month after she sued him in Ohio for at least $75,000 in damages. Fox also demanded a jury trial.

Bormann's attorney filed a motion Monday seeking to have Fox's lawsuit dismissed, calling it frivolous.

In her lawsuit, Bormann said Fox struck her in the breast, groin, arm and legs after she stopped him from boarding her chartered party bus on Aug. 28. Fox was in Ohio for a movie shoot.

Prosecutors declined to file charges in the case.

Fox's attorney said Tuesday he hadn't seen the motion and couldn't comment.

Source: http://us.rd.yahoo.com/dailynews/rss/entertainment/*http%3A//us.rd.yahoo.com/dailynews/external/omg_rss/rss_omg_en/news_bus_driver_wants_matthew_fox_countersuit_tossed133121590/43606669/*http%3A//omg.yahoo.com/news/bus-driver-wants-matthew-fox-countersuit-tossed-133121590.html

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Chance of 2012 U.S. recession tops 50 percent: Fed paper (Reuters)

(Reuters) ? The European debt crisis is raising the odds of a U.S. recession, with economic contraction more likely than not by early 2012, according to research from the San Francisco Federal Reserve Bank.

While it is difficult to gauge the odds precisely, an analysis of leading U.S. economic indicators suggests a rising chance of a recession through the end of the year and into early next year, researchers at the regional Fed bank wrote on Monday. The risk of recession recedes after the second half of 2012, they found.

New governments in Greece and Italy, with fresh promises to tackle fiscal problems have in recent days, allayed investor concerns about a near-term sovereign debt default in the euro zone, but Europe's debt crisis is far from resolved. The region is facing its worst hour since World War II, German Chancellor Angela Merkel said on Monday.

Although domestic threats to economic growth in the United States are limited, a shock from abroad could derail a fragile recovery.

The weak U.S. economy is more than usually vulnerable to turbulence beyond its borders, as the unexpectedly severe U.S. effects from Japan's devastating earthquake in March demonstrates, the researchers said.

"A European sovereign debt default may well sink the United States back into recession," wrote Travis Berge, Early Elias and Oscar Jorda in the latest San Francisco Fed Economic Letter. "However, if we navigate the storm through the second half of 2012, it appears that danger will recede rapidly in 2013.

The assessment of recession risk is more dire than that of many private economists. A November 4 Reuters poll of primary dealers shows Wall Street economists see a 30 percent chance of a U.S. recession next year, down from 35.5 percent a month earlier.

Last week the Federal Reserve's influential vice chairwoman Janet Yellen warned on the threat from Europe, saying governments there need to take forceful steps to contain the crisis or risk substantial damage to the United States.

Before taking her post at the Fed Board in Washington, Yellen headed the San Francisco Fed.

Her successor, John Williams, is due to give a major policy speech on Tuesday.

(Reporting by Ann Saphir; Editing by Padraic Cassidy)

Source: http://us.rd.yahoo.com/dailynews/rss/economy/*http%3A//news.yahoo.com/s/nm/20111114/bs_nm/us_usa_fed_recession

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Three French hostages in Yemen freed (Reuters)

PARIS (Reuters) ? Three French aid workers held hostage in Yemen since May 28 have been freed, French President Nicolas Sarkozy said.

The three hostages, two women and a man, worked for French charity Triangle Generation Humanitaire and had been kidnapped at a restaurant in the southeastern province of Hadramout.

The Arabian Peninsula country has been in the grip of civil unrest for months and Hadramout is among provinces where al Qaeda's Yemen-based wing has been active.

"The president warmly thanks the Sultan of Oman and the Omanese authorities for their crucial help, as well as all those who contributed to this happy resolution," the president's office said in a statement.

The statement, which said Sarkozy "shared the joy" of the aid workers' families, did not say how their release had been secured.

Kidnappings of Western tourists or workers by tribes seeking ransom or concessions from the government have been frequent in Yemen, one of the poorest Arab countries. Most hostages have been freed unharmed.

(Reporting By Christian Plumb and Gregory Schwartz; Editing by Louise Ireland)

Source: http://us.rd.yahoo.com/dailynews/rss/europe/*http%3A//news.yahoo.com/s/nm/20111114/wl_nm/us_yemen_france

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Poland charges 46 in attacks on police in marches (AP)

WARSAW, Poland ? Polish prosecutors have filed criminal charges against 46 people suspected of attacking police during Independence Day marches in Warsaw.

The charges Sunday come as Polish authorities have moved quickly to put on trial some of the 210 people arrested in Friday's attacks. Officials are taking a tough stance against violence before the Euro 2012 soccer championships next year.

The news agency PAP quoted a spokeswoman for prosecutors, Monika Lewandowska, as saying that 46 were charged for their involvement in what was some of the worst street violence in Poland in years.

Of 210 arrested, 92 were Germans, many of whom have been allowed to return home. Lewandowska said two people were convicted Sunday after they confessed.

Source: http://us.rd.yahoo.com/dailynews/rss/europe/*http%3A//news.yahoo.com/s/ap/20111113/ap_on_re_eu/eu_poland_independence_day

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Navy ship named for civil rights leader Evers (Providence Journal)

Share With Friends: | | Politics - Top Stories Stories, News Feeds and News via Feedzilla.

Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/161316294?client_source=feed&format=rss

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Zero Motorcycles ? New range of electric motorcycles

Zero Motorcycles?out of California has just released its 2012 lineup of electric motorcycles which include new power trains, models capable of exceeding 100 miles range, a new powerpack designed to last the life of the bike, and top speeds of up to 88mph. ?This will be the first time that a mass produced electric motorcycle [...]

Source: http://the-gadgeteer.com/2011/11/11/zero-motorcycles-new-range-of-electric-motorcycles/

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Using light, researchers convert 2-D patterns into 3-D objects

Public release date: 10-Nov-2011
[ | E-mail | Share ]

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University

Researchers from North Carolina State University have developed a simple way to convert two-dimensional patterns into three-dimensional (3-D) objects using only light.

"This is a novel application of existing materials, and has potential for rapid, high-volume manufacturing processes or packaging applications," says Dr. Michael Dickey, an assistant professor of chemical and biomolecular engineering at NC State and co-author of a paper describing the research.

The process is remarkably simple. Researchers take a pre-stressed plastic sheet and run it through a conventional inkjet printer to print bold black lines on the material. The material is then cut into a desired pattern and placed under an infrared light, such as a heat lamp.

The bold black lines absorb more energy than the rest of the material, causing the plastic to contract creating a hinge that folds the sheets into 3-D shapes. This technique can be used to create a variety of objects, such as cubes or pyramids, without ever having to physically touch the material. The technique is compatible with commercial printing techniques, such as screen printing, roll-to-roll printing, and inkjet printing, that are inexpensive and high-throughput but inherently 2-D.

By varying the width of the black lines, or hinges, researchers are able to change how far each hinge folds. For example, they can create a hinge that folds 90 degrees for a cube, or a hinge that folds 120 degrees for a pyramid. The wider the hinge, the further it folds. Wider hinges also fold faster, because there is more surface area to absorb energy.

"You can also pattern the lines on either side of the material," Dickey says, "which causes the hinges to fold in different directions. This allows you to create more complex structures."

The researchers developed a computer-based model to explain how the process works. There were two key findings. First, the surface temperature of the hinge must exceed the glass transition temperature of the material, which is the point at which the material begins to soften. Second, the heat has to be localized to the hinge in order to have fast and effective folding. If all of the material is heated to the glass transition temperature, no folding will occur.

"This finding stems from work we were doing on shape memory polymers, in part to satisfy our own curiosity. As it turns out, it works incredibly well," Dickey says.

###

The paper, "Self-folding of polymer sheets using local light absorption," was published Nov. 10 in the journal Soft Matter, and was co-authored by Dickey; NC State Celanese Professor of Chemical and Biomolecular Engineering Jan Genzer; NC State Ph.D. student Ying Liu; and NC State undergraduate Julie Boyles. The work was supported, in part, by the U.S. Department of Energy.

---

[ | E-mail | Share ]

?

AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.

Public release date: 10-Nov-2011
[ | E-mail | Share ]

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University

Researchers from North Carolina State University have developed a simple way to convert two-dimensional patterns into three-dimensional (3-D) objects using only light.

"This is a novel application of existing materials, and has potential for rapid, high-volume manufacturing processes or packaging applications," says Dr. Michael Dickey, an assistant professor of chemical and biomolecular engineering at NC State and co-author of a paper describing the research.

The process is remarkably simple. Researchers take a pre-stressed plastic sheet and run it through a conventional inkjet printer to print bold black lines on the material. The material is then cut into a desired pattern and placed under an infrared light, such as a heat lamp.

The bold black lines absorb more energy than the rest of the material, causing the plastic to contract creating a hinge that folds the sheets into 3-D shapes. This technique can be used to create a variety of objects, such as cubes or pyramids, without ever having to physically touch the material. The technique is compatible with commercial printing techniques, such as screen printing, roll-to-roll printing, and inkjet printing, that are inexpensive and high-throughput but inherently 2-D.

By varying the width of the black lines, or hinges, researchers are able to change how far each hinge folds. For example, they can create a hinge that folds 90 degrees for a cube, or a hinge that folds 120 degrees for a pyramid. The wider the hinge, the further it folds. Wider hinges also fold faster, because there is more surface area to absorb energy.

"You can also pattern the lines on either side of the material," Dickey says, "which causes the hinges to fold in different directions. This allows you to create more complex structures."

The researchers developed a computer-based model to explain how the process works. There were two key findings. First, the surface temperature of the hinge must exceed the glass transition temperature of the material, which is the point at which the material begins to soften. Second, the heat has to be localized to the hinge in order to have fast and effective folding. If all of the material is heated to the glass transition temperature, no folding will occur.

"This finding stems from work we were doing on shape memory polymers, in part to satisfy our own curiosity. As it turns out, it works incredibly well," Dickey says.

###

The paper, "Self-folding of polymer sheets using local light absorption," was published Nov. 10 in the journal Soft Matter, and was co-authored by Dickey; NC State Celanese Professor of Chemical and Biomolecular Engineering Jan Genzer; NC State Ph.D. student Ying Liu; and NC State undergraduate Julie Boyles. The work was supported, in part, by the U.S. Department of Energy.

---

[ | E-mail | Share ]

?

AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.

Source: http://www.eurekalert.org/pub_releases/2011-11/ncsu-ulr111011.php

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