Saturday, December 31, 2011

New Satellites To Extend China's Military Reach

Chinese and foreign military experts say the PLA?s General Staff Department and General Armaments Department closely coordinate and support all of China?s space programs within the sprawling science and aerospace bureaucracy.

As part of this system, the Beidou, or ?Big Dipper,? network will have an important military role alongside the country?s rapidly expanding network of surveillance, imaging and remote sensing satellites.

China routinely denies having military ambitions in space.

Defense Ministry spokesman Yang Yujun on Wednesday dismissed fears the Beidou network would pose a military threat, noting that all international satellite navigation systems are designed for dual civilian and military use.

Catching Up With The U.S.

China accelerated its military satellite research and development after PLA commanders found they were unable to track two U.S. aircraft carrier battle groups deployed in 1996 to the Taiwan Strait at a time of high tension between the island and the mainland, analysts say.

The effort received a further boost when it was shown how crucial satellite networks were in the 1991 Gulf War, the 1999 NATO bombing of Yugoslavia and the 2003 invasion of Iraq.

While China still lags behind the United States and Russia in overall space technology, over the last decade it has rapidly become a state-of-the-art competitor in space-based surveillance after deploying a range of advanced satellite constellations that serve military and civilian agencies.

With the launch of more than 30 surveillance satellites over the last decade, according to space technology experts, the PLA can monitor an expanding area of the earth?s surface with increased frequency, an important element of reliable military reconnaissance.

That coverage gives PLA commanders vastly improved capability to detect and track potential military targets.

Real-time satellite images and data can also be used to coordinate the operations of China?s naval, missile and strike aircraft forces in operations far from the mainland.

?What we are seeing is China broadly acquiring the same capabilities in this area as those held by the U.S.,? said Ross Babbage, a defense analyst and founder of the Canberra, Australia-based Kokoda Foundation, an independent security policy unit.

?Essentially, they are making most of the Western Pacific far more transparent to their military.?

In a recent article for the Journal of Strategic Studies, researchers Eric Hagt and Matthew Durnin attempted to estimate the capability of China?s space network using orbital modeling software and available data on satellite performance.

China?s most basic satellites carried electro-optical sensors capable of taking high resolution digital images in the visible and non-visible wavelengths, wrote the authors.

More advanced satellites launched in recent years carried powerful synthetic aperture radars that could penetrate cloud and cover much bigger areas in high detail.

Added to that, China was now deploying satellites that could monitor electronic signals and emissions, so-called electronic intelligence or ELINT platforms, the authors said.

?Next to China, only the United States possesses more capable tactical support systems in space for tactical operations,? they wrote.

Intellpuke: You can read this article by Reuters correspondent David Lague, reporting from Hong Kong, China, in context here: arabnews.com/world/article555642.ece

Source: http://freeinternetpress.com/story/New-Satellites-To-Extend-Chinas-Military-Reach-33292.html

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Exclusive: U.S. mulls transfer of senior Taliban prisoner (Reuters)

WASHINGTON (Reuters) ? The Obama administration is considering transferring to Afghan custody a senior Taliban official suspected of major human rights abuses as part of a long-shot bid to improve the prospects of a peace deal in Afghanistan, Reuters has learned.

The potential hand-over of Mohammed Fazl, a 'high-risk detainee' held at the Guantanamo Bay military prison since early 2002, has set off alarms on Capitol Hill and among some U.S. intelligence officials.

As a senior commander of the Taliban army, Fazl is alleged to be responsible for the killing of thousands of Afghanistan's minority Shi'ite Muslims between 1998 and 2001.

According to U.S. military documents made public by WikiLeaks, he was also on the scene of a November 2001 prison riot that killed CIA operative Johnny Micheal Spann, the first American who died in combat in the Afghan war. There is no evidence, however, that Fazl played any direct role in Spann's death.

Senior U.S. officials have said their 10-month-long effort to set up substantive negotiations between the weak government of Afghan President Hamid Karzai and the Taliban has reached a make-or-break moment. Reuters reported earlier this month that they are proposing an exchange of "confidence-building measures," including the transfer of five detainees from Guantanamo and the establishment of a Taliban office outside of Afghanistan.

Now Reuters has learned from U.S. government sources the identity of one of the five detainees in question.

The detainees, the officials emphasized, would not be set free, but remain in some sort of further custody. It is unclear precisely what conditions they would be held under.

In response to inquiries by Reuters, a senior administration official said that the release of Fazl and four other Taliban members had been requested by the Afghan government and Taliban representatives as far back as 2005.

The debate surrounding the White House's consideration of high-profile prisoners such as Fazl illustrates the delicate course it must tread both at home and abroad as it seeks to move the nascent peace process ahead.

One U.S. intelligence official said there had been intense bipartisan opposition in Congress to the proposed transfer.

"I can tell you that the hair on the back of my neck went up when they walked in with this a month ago, and there's been very, very strong letters fired off to the administration," the official said on condition of anonymity.

The senior administration official confirmed that the White House has received letters from lawmakers on the issue. "We will not characterize classified Congressional correspondence, but what is clear is the President's order to us to continue to discuss these important matters with Congress," the official said.

Even supporters of a controversial deal with the Taliban - a fundamentalist group that refers to Americans as infidels and which is still killing U.S., NATO and Afghan soldiers on the battlefield - say the odds of striking an accord are slim.

Critics of Obama's peace initiative remain deeply skeptical of the Taliban's willingness to negotiate, given that the West's intent to pull out most troops after 2014 could give insurgents a chance to reclaim lost territory or push the weak Kabul government toward collapse.

The politically charged nature of the initiative was on display this month when the Karzai government angrily recalled its ambassador from Doha and complained Kabul was being cut out of U.S.-led efforts to establish a Taliban office in Qatar.

U.S. officials appear to have smoothed things over with Karzai since then. Karzai's High Peace Council is signaling it would accept a liaison office for the Taliban office in Qatar - but also warning foreign powers that they cannot keep the Afghan government on the margins.

The detainee transfer may be even more politically explosive for the White House. In discussing the proposal, U.S. officials have stressed the move would be a 'national decision' made in consultation with the U.S. Congress.

Obama is expected to soon sign into law a defense authorization bill whose provisions would broaden the military's power over terrorist detainees and require the Pentagon to certify in most cases that certain security conditions will be met before Guantanamo prisoners can be sent home.

The mere idea of such a transfer is already raising hackles on Capitol Hill, where one key senator last week cautioned the administration against negotiating with "terrorists."

Senator Saxby Chambliss, the top Republican on the Senate Intelligence Committee, said such detainees would "likely continue to pose a threat to the United States" even once they were transferred.

POTENTIAL MAELSTROM

In February, the Afghan High Peace Council named a half-dozen it wanted released as a goodwill gesture. The list included Fazl; senior Taliban military commander Noorullah Noori; former deputy intelligence minister Abdul Haq Wasiq; and Khairullah Khairkhwa, a former interior minister.

All but Khairkhwa were sent to Guantanamo on January 11, 2002, according to the military documents, meaning they were among the first prisoners sent there.

Bruce Riedel, a former CIA and White House official, said Fazl was alleged to have been involved in 'very ugly' violence against Shi'ites, including members of the Hazara ethnic minority, beginning in the late 1990s, and the deaths of Iranian diplomats and journalists at the Iranian consulate in the northern Afghan city of Mazar-i-Sharif in 1998.

Michael Semple, a former UN official with more than two decades of experience in Afghanistan, said Fazl commanded thousands of Taliban soldiers at a time when its army carried out massacres of Shi'ites. "If you're head of an army that carries out a massacre, even if you're not actually there, you are implicated by virtue of command and control responsibility," he said.

He added: "However it does not serve the interests of justice selectively to hold Taliban to account, while so many other figures accused of past crimes are happily reintegrated in Kabul."

Some U.S. military documents - select documents have been released, others were leaked - indicate that Fazl denied being a senior Taliban official and says he only commanded 50 or 60 men. But the overall picture of his role is unclear from the documents which have become public.

Richard Kammen is an Indiana lawyer who has nominally represented Fazl; the detainee did not want an attorney.

"Based upon the public information with which I'm familiar, it would appear his role in things back in 2001 has been significantly exaggerated by the government," Kammen said.

According to the documents, Fazl and Noori surrendered to Abdul Rashid Dostum, now Afghanistan's army chief of staff but at the time a powerful warlord battling against the Taliban, in northern Afghanistan in November 2001.

While the men were being held at the historic Qala-i-Jani fortress in Mazar-i-Sharif, Taliban prisoners revolted against their captors from the Northern Alliance, the anti-Taliban coalition.

"Dostum brought (Fazl and Noori) to the bunker to ask the prisoners to surrender; detainee and (Noori) refused," the detainee assessment from a 2008 document read.

Spann, a one-time Marine captain who was sent to Afghanistan as a CIA operative in the fall of 2001, was trying to locate al Qaeda operatives at the Mazar fortress among a large group of Taliban soldiers who had surrendered, according to the CIA and media reports at the time. When the Taliban prisoners began to riot - many of them were apparently armed - Spann was surrounded and killed. After a bloody, multi-day battle his body was later found booby-trapped.

Even a loose association between Fazl and Spann's death - despite the fact there is nothing to suggest he was directly involved - is likely to increase the temperature of the debate in Washington.

What could be problematic for some Afghans is Fazl's identification with the killing of civilians in central and northern Afghanistan.

"The composition and timing of any release has got to pay attention to Northern Alliance concerns," Semple said.

Buy-in from supporters of that alliance - and from those wary of a resurgent Taliban - will be key in making a peace deal stick, if one can be had.

Despite the congressional concerns that released Taliban will return to the battlefield, Semple said it was unlikely even prisoners like Fazl - who truly was a significant military figure for the Taliban - would alter that equation.

"These people are not going to make a real contribution to the Taliban war effort even if they are able to go over to Quetta and rejoin the fight. It's not risky in battlefield terms; it's only risky in U.S. political terms."

(Additional reporting by Tabassum Zakaria, Patrick Worsnip and Jane Sutton; editing by Claudia Parsons)

Source: http://us.rd.yahoo.com/dailynews/rss/world/*http%3A//news.yahoo.com/s/nm/20111230/wl_nm/us_usa_afghanistan_detainees

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Michael Jordan engaged to model Yvette Prieto (AP)

CHARLOTTE, N.C. ? Michael Jordan is engaged to longtime girlfriend Yvette Prieto, a Cuban-American model he's been dating for three years. Publicist Estee Portnoy confirmed the news, first reported by WCNC in Charlotte, on Thursday.

The Bobcats owner got engaged over the Christmas weekend. No wedding date has been set.

This will be Jordan's second marriage. He married Juanita Vanoy in September 1989, and they divorced in 2006. They have two sons, Jeffrey Michael and Marcus James, and a daughter, Jasmine.

Source: http://us.rd.yahoo.com/dailynews/rss/sports/*http%3A//news.yahoo.com/s/ap/20111230/ap_on_sp_bk_ne/bkn_jordan_engaged

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Friday, December 30, 2011

Just how isolated is North Korea? 6 facts to consider (The Christian Science Monitor)

Just how isolated is North Korea? 6 facts to consider - Yahoo! News Skip to navigation ? Skip to content ? The Christian Science Monitor By Jenna Fisher Jenna Fisher ? Wed?Dec?28, 9:19?am?ET Follow Yahoo! News on , become a fan on Facebook
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  • Source: http://us.rd.yahoo.com/dailynews/rss/nkorea/*http%3A//news.yahoo.com/s/csm/20111228/wl_csm/442260

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    Green group: Tornado cleanup a bright spot for Ala

    BIRMINGHAM, Ala. (AP) - An environmental group says the tornadoes that devastated Alabama during the spring show that a state with a spotty record can make progress toward recycling and protecting its streams and forests. Environmentalists often criticize Alabama for what they consider lax...

    ? Read More

    Source: http://www.msnbc.msn.com/id/45807799/ns/local_news-birmingham_al/

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    Thursday, December 29, 2011

    comScore: U.S. Online Holiday Spending Up 15% To Record $35.3 Billion

    comscore-xmas 2011comScore just released new numbers on U.S. online holiday spending for the season-to-date, and found that consumers continued to shop online in record numbers. For the first 56 days of the November-December 2011 holiday season, $35.3 billion was spent online - an increase of 15% over the corresponding days last year, and a new record.

    Source: http://feedproxy.google.com/~r/Techcrunch/~3/ShTBxqB9Q9c/

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    Server-side code not called after client-side javascript on Windows 7 machine

    Hi - I have an ASP.Net 4.0 solution that runs fine

    on a Windows 2008 server. However, I've just been given a new Windows 7 64-bit
    machine to use as my development machine and I'm having a problem with one of my
    aspx pages. This page has some javascript on it, which runs fine, but then it
    gets to the following code:
    <script type="text/javascript">
    //<![CDATA[var theForm = document.forms['aspnetForm'];
    if (!theForm) {   
     theForm = document.aspnetForm;}
    function __doPostBack(eventTarget, eventArgument) {   
     if (!theForm.onsubmit || (theForm.onsubmit() != false)) {        
    theForm.__EVENTTARGET.value = eventTarget;        
    theForm.__EVENTARGUMENT.value = eventArgument;       
     theForm.submit();    
    }}//]]></script>
    This not code that I've written; it's code that's
    generated client-side that I see as I'm debugging my app in Visual Studio 2010
    (trying to figure out what the $^#$ is going on). At any rate, once this code
    completes, the app does?a post back, but then??does nothing. The debugger should take me to some server-side
    code called by the button click that calls the client-side javascript, but it doesn't. It just sits there. The result is that the page doesn't do
    what it's supposed to do (no inserts to databases, no success messages, no
    nothing).

    As I said, this problem is restricted to my W7 64-bit machine;
    it runs fine on W2008. Other pages with javascript in the same solution work
    fine on my W7 machine. I found a post (http://dopostback.net/index.php/net-...anel-problems/) that
    discusses a similar issue within an UpdatePanel, but I'm not using UpdatePanel.
    My page does have hidden controls on it, but so do other pages that work just
    fine. Does anyone know what could be causing this?

    Thanks!

    Source: http://forums.asp.net/p/1751556/4741314.aspx/1?Server+side+code+not+called+after+client+side+javascript+on+Windows+7+machine

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    Wednesday, December 28, 2011

    Mayor calls for 'unified, peaceful closure' of Occupy Eugene camp

    EUGENE, Ore. - Violence that put a man in the hospital with life-threatening injuries after a fight at the Occupy Eugene camp prompted the mayor to call a special meeting of the City Council and call on the community for the "unified, peaceful closure of the camp."

    "This has caused me to see the wisdom in moving sooner than originally decided.?The safety of the public and our officers has to be foremost for us," Mayor Kitty Piercy said at the outset of the special meeting Tuesday at noon. "I ask Occupy Eugene, the broader community and council to come together in unified support of the peaceful closure of the camp."?

    The Council voted 5-2 to direct the City Manager to dismantle the camp and restore the site "as soon as practicable."

    The Council also voted 7-0 to expand the car camping ordinance to include tents.

    "It didn't go in the direction we had hoped it would go," Councilor Andrea Ortiz said of the city's efforts to accomodate Occupy Eugene.

    To help mitigate the impact, City Manager Jon Ruiz said city staff prepared?the ordinance to allow tent camping at churches that allows people who are homeless to camp in cars at approved locations.

    Police Chief Pete Kerns went over a number of violent incidents his officers have responded to in recent weeks, including a man hospitalized after being attacked by a man with an ax.

    The most recent incident Monday night involved a fight that put a man in the hospital with injuries that may threaten his life, Kerns said.

    "I would defend anyone's right to protest any time, any where," Councilor Mike Clark said. "I don't believe camping is necessary to do it."

    Councilor George Brown indicated the violence had "crossed a threshold."

    "I just see this as following our original plan, which I think was very sound," he said. "We just have to speed it up."

    Councilor Pat Farr said the City should have dealt with this situation earlier. He called the camp's appeal to a troublemaking element "predictable."

    "As far as when this should be shut down, immediate is not soon enough for me," George Poling said. He voiced confidence in the police chief's plan to close the camp.

    Not all of the Councilors were eager to close the camp.

    "I would never have voted to establish a homeless camp, but it happened," Councilor Taylor said.

    She questioned the chief of police on where the people in the camp came from and where they would go after the camp closes.

    She asked why police couldn't just ask people who commit crimes in the camp to move.

    "If these same people were down by the river or down by the bus station and something happened, you would respond to that?" Taylor said.

    After the Council voted 5-2 to disband the camp, they opened a public hearing on a proposal to expand the definition of car camping to include tents.

    Members of the public affiliated with the Occupy Eugene movement questioned the proposal, saying the program is full and that the council was trying to break up the camp to hide the problem of homelessness.

    "Where are you going to put these people?" said "Big" John McCahill, the camp's cook. "There's nowhere for them to go except back to the streets."

    "The best way to make changes is to get involved and infiltrate the organization that you want to affect," Councilor Ortiz said.

    Councilor Clark recalled Cahill's past testimony calling for a civil society where people work together to solve problems.

    "It's eliminated the chance to camp in this one particular park," Councilor Clark said, "but it has not eliminated that opportunity to work together."

    Source: http://whiteaker.kval.com/news/news/252796-mayor-calls-unified-peaceful-closure-occupy-eugene-camp

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    Monday, December 26, 2011

    PFT: Phillips back to work with Texans

    Tony Romo, Jerry JonesAP

    During Saturday?s loss to the Eagles, Cowboys owner Jerry Jone went down to the sideline to talk to head coach Jason Garrett, to make sure Garrett knew the Giants had won earlier in the day and therefore the Cowboys didn?t have anything to play for.

    Some fans and media members have suggested that Jones was out of line by doing that, but Jones says he can?t understand why anyone would think the owner of a business shouldn?t be involved in every element of that business.

    ?It has amazed me to be criticized for really walking down on the floor of the company,? Jones said on KTCK-AM 1310, via the Dallas Morning News. ?The more involved your top management, the more involved ownership can be, I?ve always thought made the best way for it to work.?

    Jones says he doesn?t act any differently on game days now than he did in the 1990s, and that it worked out pretty well then.

    ?You didn?t see that kind of criticism very early on, but we were winning Super Bowls,? Jones said. ?And it was the same exact way that we handled our decision-making and the exact same way that we handled our ultimate information gathering system. We?ve been doing it ever since I owned the team. The exact same way.?

    Jones says he doesn?t tell Garrett who can play and who can?t, but he did want to make sure Garrett understood that quarterback Tony Romo didn?t need to take any chances by playing in an essentially meaningless game against the Eagles.

    ?That?s Jason?s decision, but he doesn?t need to be making that one by himself,? Jones said. ?So I wanted to, very briefly, step down there with just a few minutes gone in the first quarter, sit there and say, ?Here?s the lay of the land. Romo?s got a hand injury, but it looks like we?re going to have him for New York.??

    And if Jones thinks his coach might not know the lay of the land, Jones is going to make sure his coach knows the lay of the land. That?s going to be the case as long as Jones owns the Cowboys.

    Source: http://profootballtalk.nbcsports.com/2011/12/26/wade-phillips-is-back-to-work-with-the-texans/related/

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    Israel PM Benjamin Netanyahu vows to stop harassment by Jewish zealots

    JERUSALEM: Prime Minister Benjamin Netanyahu stepped up pledges to curb Jewish zealotry in Israel on Sunday after an 8-year-old girl complained of being menaced by ultra-Orthodox men who deemed her dress immodest.

    While his conservative government insists such incidents are fringe phenomena in the mostly secular country, Netanyahu's repeated announcements on the matter reflected concern about widening religious and political schisms.

    "In a Western, liberal democracy, the public realm is open and safe for all, men and women both, and neither harassment nor discrimination have any place there," he told his cabinet in broadcast remarks.

    Netanyahu said he had ordered law enforcement authorities to crack down on "whoever spits, whoever lifts a hand (in violence), whoever harasses" and to remove street signs segregating men from women in some ultra-Orthodox districts.

    The statement appeared to have been prompted by an expose on Israel's top-rated weekend news about intra-Jewish friction in Beit Shemesh, a town of about 87,000 people near Jerusalem.

    Naama Margolese, 8, told Channel Two television she was terrified of walking to her moderate Orthodox school because of passersby who want her "to dress like a Haredi" - the Hebrew term for the ascetic, black-coated Jews who are in "awe" of God.

    "I'm afraid I might get hurt or something," the girl said. Margolese's mother Hadassa, an American immigrant who wore a headscarf and skirt in deference to religious Jewish tradition, said the sidewalk abuse could include spitting, curses like "whores" and "bastards" and calls to "clear out of here".

    "If that's what happens now, and they (authorities) don't do anything, what will happen in another few years?" she told Israel's Army Radio on Sunday. "This is a terrorist group."

    Returning to Beit Shemesh on Sunday, a Channel Two crew was mobbed by ultra-Orthodox Jews who stoned their car, wounded a reporter and stole equipment, police said. The crew was rescued by police, who said they were questioning suspected assailants.

    Separately, police said they had arrested a Beit Shemesh man for spitting at a woman, and that he could face assault charges.

    In the report broadcast on Friday, Channel Two showed a Beit Shemesh street sign instructing women to keep to one side, away from a synagogue. A few ultra-Orthodox men who agreed to be interviewed sought to justify their forcible occlusion of women.

    Israeli media have debated the impact of religious gender segregation on public transport and the conscript army, where some pious troops prefer to shun female instructors and singers.

    The ultra-Orthodox make up only about 10 percent of Israel's population of 7.7 million. But their high birthrates and bloc voting patterns have helped them secure welfare benefits and wider influence. One of Netanyahu's biggest partners in the coalition government, Shas, is a party run by rabbis.

    According to Channel Two, its Beit Shemesh story has generated momentum for a demonstration against ultra-Orthodox coercion in the town, scheduled for Tuesday.

    Moshe Abutbol, the Shas mayor of Beit Shemesh put the number of townspeople involved in the abuse at between 20 and 50.

    Emulating Israeli commandos who disguise themselves as Arabs for missions in Palestinian areas, the police have officers who work undercover among the ultra-Orthodox. Israeli television showed them raiding a religious protest in Jerusalem on Dec. 17.

    Netanyahu has also condemned radical Jews behind a spree of vandalism against Palestinian property and Israeli garrisons in the occupied West Bank, attacks designed to bog down government moves to raze settlements built without a permit.

    "Beit Shemesh shocked Netanyahu not because of new facts but because of old facts that were recounted by a lovely little blond-haired girl with blue eyes," said Nahum Barnea, senior commentator for the biggest-selling newspaper Yedioth Ahronoth.

    Source: http://timesofindia.feedsportal.com/fy/8at2EuL0UwNaQ1UL/story01.htm

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    Sunday, December 25, 2011

    Windows 8 preview generates poor usage

    News

    Although millions have downloaded Microsoft?s Windows 8 developer preview, relatively few are actually using it, web measurements show.

    During November, Windows 8 powered 0.03 percent of the computers ? or three out of every 10,000 ? that connected to the internet, according to data from California-based Net Applications.

    That?s a small increase from the 0.02 percent Windows 8 garnered in October, the first full month after Microsoft released a developer preview of the still-under-construction OS to the public.

    But Windows 8?s current numbers pale in comparison to Windows 7?s very early returns three years ago.

    Microsoft released the first beta of Windows 7 on January 9, 2009 ? it never offered a developer preview to the general public ? and after a server-side overload, restarted downloads the next day. Three weeks later, Windows 7 accounted for 0.13 percent of all operating systems, or more than four times what Windows 8 has accrued in two-and-a-half months.

    The download numbers for the two are roughly comparable.

    Last week, Microsoft said that over three million copies of Windows 8 had been downloaded between September 13 and December 7, 2011.

    While Microsoft never disclosed how many copies of Windows 7 beta were downloaded, the company initially put a cap of 2.5 million on the release, then changed its mind: It first dumped the cap, then extended availability by two weeks.

    Both moves suggested that fewer than 2.5 million copies had been downloaded during January 2009. At the time, Microsoft declined to say whether Windows 7?s beta had fallen short or surpassed the 2.5 million-mark.

    Data from Chitika, which recently mined its online ad-serving network to measure Windows 8 uptake, suggested that its use has slipped since the preview?s launch.

    According to Chitika, Windows 8?s share of all Windows traffic ranged between 0.015 percent and 0.025 percent during the week of December 4-12, lower than the 0.035 percent peak it measured the week after the preview?s debut.

    [Note: While Chitika's Windows 8 numbers represent a share of Windows traffic only, for all intents and purposes they're analogous to the share of all online desktop operating systems, since Windows currently accounts for more than 92 percent of all such OSes.]

    Chitika used those numbers to argue in a report last week that interest in Windows 8?s developer preview was flagging.

    ?Such a low level of activity witnessed in Windows 8 in the months leading up to its beta release is troubling,? said the Chitika report, noting that desktop users have complained that its ?touch-first? user interface does not work well with a keyboard and mouse.

    The comparisons using download and web usage data bear out Windows 8?s poor performance relative to Windows 7, even when 2011?s larger pool of online computers is taken into account. (The personal computer installed base grows at a rate of about 12% per year.)

    But it?s also a fact that a preview does not a beta make. The first is rough-edged and likely used only for short stretches, then put aside; the latter is feature-complete and run by more people as their primary OS. Comparisons between the two will always skew toward the beta.

    Chitika hinted as much. ?It is too soon to tell whether the developments in Windows 8 will either limit its success, or further its grip on the OS market,? the company said. ?Only time will tell.?

    Microsoft intends to ship a public beta of Windows 8 in late February 2012, but has not yet set a specific date.

    Source: http://www.macworld.com.au/news/windows-8-preview-generates-poor-usage-42114/

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    MustafaMir: RT @DeirQaddis: #ChristmasIsCancelled I told Santa that Israel wants Peace. He died laughing. #XmasInPalestine

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    #ChristmasIsCancelled I told Santa that Israel wants Peace. He died laughing. #XmasInPalestine DeirQaddis

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    Source: http://twitter.com/MustafaMir/statuses/150629655576199168

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    Saturday, December 24, 2011

    Voters Like Venting at Mitt Romney (The Atlantic Wire)

    New Hampshire voters don't seem to like being asked to settle for Mitt Romney, asking him slightly-hostile questions at town halls that can be summed up as, What makes you think you're so awesome? "I've heard the talk. I would like to see the walk," Von Baltzer told Romney at a Berlin, New Hampshire town hall Thursday, Reuters'?Ros Krasny?reports. "What can you say to me and to other voters that are sitting here, that the promises that you're making, that you can walk the talk?" But at a Conway town hall, it wasn't authenticity but relatability that was on the mind of another skeptical voter.??"Relatability has been a large issue for you on this campaign trail, and as a college student many people in my generation find it especially hard to relate to you as a candidate," Kallie Durkit asked the candidate , according to ABC News'?Emily Friedman. "Why should we mobilize for you as a candidate instead of Obama, which we did in 2008?"?Romney answered with a pretty big promise: "What I can promise you is this -- when you get out of college, if I?m president you?ll have a job. If President Obama is reelected, you will not be able to get a job."

    Related: First GOP Debate with Recognizable Candidates Will Be on June 13

    Even the voters trying to be nice have a hidden not-so-pro-Romney agenda.?Friedman reports that one voter presented Romney with a bottle of chocolate milk, which his wife said was his favorite vice in an interview recently. "I wondered if I gave you a bribe, if you would tell us if your vice presidential running mate would be from Florida, Illinois or New Jersey? he asked. If I act slightly nice, will you at least pick someone I like better for your No. 2??The?New Hampshire Union Leader, in an editorial trying to goad Romney into debating the paper's chosen candidate, Newt Gingrich, says Romney's no good with unscripted answers -- like when a gay veteran confronted him -- and his town halls are "often a careful, arms-length kind of campaigning."

    Source: http://us.rd.yahoo.com/dailynews/rss/gop/*http%3A//news.yahoo.com/s/atlantic/20111223/pl_atlantic/votersventingmittromney46619

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    Kate Middleton to Get a Puppy For Christmas!!!


    Lucky.

    That's all we can say about a report from NBC's Today Show, which discussed what Prince William is going to get Kate Middleton for Christmas, [and] said "the general consensus at this point is that the Duchess of Cambridge is getting a puppy."

    Gives new meaning to ruffing it with the in-laws, are we right?!

    A Prince William and Kate Middleton Pic

    In August, Prince Charles and Duchess Camilla adopted a Jack Russell Terrier named Beth from Battersea Dogs Home in London. Queen Elizabeth II is also an animal lover.

    Kate Middleton, 29, will spend her first Christmas as a royal with William, also 29, and his entire family at Sandringham manor, the queen's retreat in Norfolk, England.

    The royal newlyweds will be joined by Prince Harry and Pippa Middleton, of course, and a little later in the week, they'll spend time with the Middleton family at their residence.

    And their newfound four-legged friend, of course. Aww.

    [Photo: WENN.com]

    Source: http://www.thehollywoodgossip.com/2011/12/kate-middleton-to-get-a-puppy-for-christmas/

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    Friday, December 23, 2011

    Habit formation is enabled by gateway to brain cells

    Wednesday, December 21, 2011

    A brain cell type found where habits are formed and movement is controlled has receptors that work like computer processors to translate regular activities into habits, researchers report.

    "Habits, for better or worse, basically define who we are," said Dr. Joe Z. Tsien, Co-Director of the Brain & Behavior Discovery Institute at Georgia Health Sciences University. Habits also provide mental freedom and flexibility by enabling many activities to be on autopilot while the brain focuses on more urgent matters, he said.

    Research published in the journal Neuronshows that NMDA receptors on dopamine neurons in the brain's basal ganglia are essential to habit formation. These receptors function like gateways to the brain cells, letting in electrically charged ions to increase the activity and communication of neurons. Their pivotal role reminds neuroscientist Dr. Lei Phillip Wang of a computer's central processing unit. "The NMDA receptor is a commander, which is why it's called a master switch for brain cell connectivity," said Wang, the study's first author.

    To determine their role in habit formation, GHSU researchers used a genetic trick to selectively disable the NMDA receptors on dopamine neurons and found, for example, mice could be trained to push a lever for food without it becoming an automatic response. If they were full, they wouldn't push the lever. But just as humans can't refrain from flipping a light switch during a power outage, satiated mice with receptors could not pass up the lever.

    When they compared the firing of the dopamine neurons in regular versus the mutant mouse, they found a dramatic spike in response to a cue that signals food in the normal mouse and a significantly dampened one in the mutant, Wang said. "We think this reduced response is probably sufficient for other types of learning, but not for habit learning," he said.

    The finding that the receptors are critical to turning learned behavior into a habit provides new direction for therapy to better treat diseases such as Parkinson's, which in addition to the hallmark shaking, causes the loss of some old habits and impedes the ability to make new ones. "When Parkinson's disease begins to kick in, your memory of habits begins to go away, often before the uncontrolled movement becomes prominent," Tsien said.

    It also opens the door to speeding up the process of forming good habits and, possibly, selectively removing bad ones such as drug addiction or smoking since the same circuits are seemingly involved in both.

    "If you know cell circuits controlling a specific habit, it puts you in a better position to devise strategies to hit different points and selectively facilitate the formation of a good habit and maybe even reverse a bad one," Tsien said.

    The fact that their mutant mice did not have motor deficits like Parkinson's patients fits with the fact that a precursor to dopamine can reduce motor symptoms in these patients, at least for a while, but does little to help cognitive function, Tsien said. Previous research indicating that just dousing a brain with dopamine doesn't rescue the ability to form habits led GHSU researchers to pursue the more sophisticated regulation that must enable habit formation.

    "Dopamine neurons regulate circuits all over the brain but they need to be regulated too," Tsien said. "The questions become how and whether regulation of dopamine neurons is important. Our study shows it's important and it's through the NMDA receptors." Part of that regulation includes proper sequencing: so a habit plays out the same way every time, Tsien noted, much like standard lettering on a keyboard enables typing rather than confusion.

    Dopamine is a chemical that helps brain cells communication. Glutamate, another neurotransmitter, brings information to the dopamine neurons to enable learning and memory but the neurons must travel through the gateway NMDA receptors to get properly categorized, the researchers noted.

    As pervasive and efficient as habits are, these automatic memories that enable driving a car or typing, are not well studied or understood. "We tend not to pay attention to them because they are so spontaneous and automatic," said Tsien. GHSU scientists want to better understand why, for example, certain actions move from purposeful acts to automatic ones. They also want to know if one way NMDA receptors work is by causing dopamine neurons to release dopamine at the right time, amount and places in the brain.

    Habits are generally characterized as procedural rather than declarative memories, such as those of events, people and places, things that require active thought. Declarative memories are more typically lost in Alzheimer's while habits often remain intact, at least for a while.

    ###

    Georgia Health Sciences University: http://www.georgiahealth.edu

    Thanks to Georgia Health Sciences 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.

    This press release has been viewed 97 time(s).

    Source: http://www.labspaces.net/116228/_Habit_formation_is_enabled_by_gateway_to_brain_cells

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    NFL Communications - Super Bowl Streamed Live in U.S. For First ...

    NFL Communications - Super Bowl Streamed Live in U.S. For First Time ? \ '); $('#wpl-mustlogin').hide().slideDown('fast'); } ); $('#wpl-mustlogin input.input').live( 'focus', function() { $(this).prev().hide(); }).live( 'blur', function() { if ( $(this).val() == '' ) $(this).prev().show(); }); $('#wpl-mustlogin input#wp-submit').live( 'click', function(e) { e.preventDefault(); $.post( 'http://nflcommunications.com/wp-admin/admin-ajax.php', { 'action': 'wpl_record_stat', 'stat_name': 'loggedout_login_submit' }, function() { $('#wpl-mustlogin form').submit(); } ); }); $('#wpl-mustlogin a#wpl-signup-link').live( 'click', function(e) { e.preventDefault(); var link = $(this).attr('href'); $.post( 'http://nflcommunications.com/wp-admin/admin-ajax.php', { 'action': 'wpl_record_stat', 'stat_name': 'loggedout_signup_click' }, function() { location.href = link; } ); }); }); /* ]]> */

    Source: http://nflcommunications.com/2011/12/20/super-bowl-streamed-live-in-u-s-for-first-time/

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    Thursday, December 22, 2011

    Researchers find misinformation about emergency contraception common in low-income neighborhoods

    Researchers find misinformation about emergency contraception common in low-income neighborhoods

    Monday, December 19, 2011

    Researchers from Boston Medical Center (BMC) and Boston University School of Medicine (BUSM) have found that in low-income neighborhoods, misinformation about access to emergency contraception is a common occurrence. These findings appear as a research letter in the Dec. 19 on-line issue of the Journal of the American Medical Association.

    In 2009, the U.S. Food and Drug Administration facilitated access to emergency contraception among adolescents by making it available over-the-counter to individuals age 17 years and older.

    From September to December 2010, female research assistants posing as adolescents who recently had unprotected intercourse were randomly assigned to call every commercial pharmacy in Nashville, Tenn.; Philadelphia; Cleveland; Austin, Texas; and Portland, Ore. Cities were chosen in geographically diverse states without pharmacy access laws that supersede uniform federal regulations. Callers followed standardized scripts to simulate real-world calls and elicit specific information on emergency contraception availability and access.

    Researchers then examined same-day availability of emergency contraception, (regardless of reason), whether emergency contraception could be accessed by the caller, and whether the pharmacy communicated the correct age at which emergency contraception was accessible over-the-counter.

    Although the researchers found the availability of emergency contraception did not differ based on neighborhood income, in 19 percent of calls the adolescent was told she could not obtain emergency contraception under any circumstance. This misinformation occurred more often (23.7 percent compared to 14.6 percent) among pharmacies in low-income neighborhoods.

    When callers queried the age threshold for over-the-counter access, they were given the correct age less often by pharmacies in low-income neighborhoods (50.0 percent compared to 62.8 percent). In all but 11 calls, the incorrect age was stated as erroneously too high, potentially restricting access.

    "Even though we found approximately 80 percent same-day availability of emergency contraception in these metropolitan cities, misinformation regarding access was common-particularly in low-income neighborhoods," said lead author Tracey Wilkinson, MD, MPH, a Fellow in the Division of General Pediatrics pediatrician at BMC/BUSM.

    While the study design did not determine why disparities in access to emergency contraception exists, the researcher believes possible explanations include differences in pharmacy staffing or training, frequency of requests for information or organizational cultures around customer service. "Our study assessed only telephone calling and not in-person visits. Despite this limitation, the finding that misinformation regarding emergency contraception access is more common in neighborhoods with the highest teen pregnancy rates suggests that targeted consumer or provider education for consumers and pharmacy staff may be necessary," she said. "We look forward to working with various companies, organizations and pharmacy staff to improve education regarding current regulations on emergency contraception access."

    ###

    Boston University Medical Center: http://www.bmc.org

    Thanks to Boston University Medical Center 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.

    This press release has been viewed 48 time(s).

    Source: http://www.labspaces.net/116137/Researchers_find_misinformation_about_emergency_contraception_common_in_low_income_neighborhoods

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    Sunday, December 18, 2011

    Guidelines for kids' food ads on hold (Star Tribune)

    Share With Friends: Share on FacebookTweet ThisPost to Google-BuzzSend on GmailPost to Linked-InSubscribe to This Feed | Rss To Twitter | Politics - Top Stories News, News Feeds and News via Feedzilla.

    Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/175752187?client_source=feed&format=rss

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    Report: Neighbor saw mom shoot baby

    By NBC News, msnbc.com staff and news service reports

    Updated at 1:11 p.m. ET:

    PONTIAC, Ill. -- The Associated Press reports a neighbor saw an Illinois?woman shoot at her 10-month-old baby before apparently killing herself.

    Authorities have said five people, including two children and a baby, were killed in a murder-suicide, but they haven't identified the shooter. The bodies were found Friday in Emington, a small farming community about 80 miles southwest of Chicago.

    Livingston County coroner identified the victims as: Sara McMeen, 30; her children, Skyler Lemke, 8, Ian Lemke, 7,?and 10-month-old Maggie Warren; and boyfriend, Daniel Warren, 29.

    Neighbor Annelise Fielder told The Associated Press that she heard a round of shots Friday afternoon and ran outside to her backyard.

    She sawMcMeen?in the next yard, hovering over her baby as if she'd dropped her. Fielder asked McMeen if everything was alright, and "She looked at me and said, 'No, everything is not alright.'"

    McMeen fired a shot at the infant, "and then I just ran," said Fielder, a town trustee. Fielder said she didn't see or hear what happened after that, and she didn't see any of the other victims.

    Earlier:

    PONTIAC, Ill. -- Five people, including a baby and two children, who were found shot to death in a small Illinois farming town were killed in a murder-suicide, authorities said Saturday.

    Livingston County coroner Michael Burke identified the victims as: 30-year-old Sara McMeen, 29-year-old Daniel Warren, 8-year-old Skyler Lemke, 7-year-old Ian Lemke and 10-month-old Maggie Warren.

    Livingston County Sheriff Martin Meredith said McMeen was the mother of all three children, and he described Daniel Warren as her live-in boyfriend.

    Authorities would not identify the shooter.

    Read complete coverage from NBC Chicago

    Meredith said a semiautomatic pistol was recovered at the scene.

    At a Friday evening press conference, Meredith did his best to allay the fears of a shaken community.

    "As your sheriff, I want to assure the residents of Livingston County that you are safe from any harm and we are not looking for anyone in this crime," he said.

    Neighbors said the family recently moved to Emington, a town of about 100 people southwest of Chicago.

    Slain kids
    Meredith said the two older children attended school in nearby Saunemin, where Skyler was in second grade and Ian was in first grade.

    Meredith said first responders found the bodies after Livingston County dispatchers received a call Friday afternoon.

    Ronald Groetsema lives near the home where the family was found and said he heard six to eight gunshots, then heard a second round of four to six shots a few minutes later.

    Groetsema's 12-year-old son got off the school bus with the children who died, he said.

    "They were happy because it was the last day of school before Christmas break," Groetsema said.

    NBC Chicago and the Associated Press contribued to this report.

    More content from msnbc.com and NBC News:

    Source: http://usnews.msnbc.msn.com/_news/2011/12/17/9519269-illinois-sheriff-5-killed-in-murder-suicide

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    Saturday, December 17, 2011

    "Batman" star roughed up in bid to visit Chinese blind (Reuters)

    BEIJING (Reuters) ? Hollywood actor Christian Bale was roughed up by Chinese security guards as he attempted to visit a blind legal activist whose detention has sparked a domestic and international outcry, CNN reported on Friday.

    Bale, who plays crime-fighting superhero Batman, and the camera crew from CNN were jostled by men in plainclothes from Dongshigu village in eastern Shandong province, where activist Chen Guangcheng has been under house arrest for 15 months, according to a video released by CNN on its website.

    "Why can I not visit this man?" Bale asked several security officers, while they were pushing him.

    "You know, I'm not being brave doing this," Bale told CNN. "The local people who are standing up to the authorities and insisting on going to visit Chen and his family and getting beaten up for it, and my understanding, getting detained for it and everything. I want to support what they are doing."

    CNN said the guards shadowed its van for more than half an hour.

    The fate of Chen, a self-schooled advocate who has campaigned against forced abortions, has become a test of wills, pitting the Communist Party's crackdown on dissent against activists championing his cause and that of artist Ai Weiwei.

    In recent months, dozens of supporters have been blocked from visiting Chen. Many were beaten by men in plain clothes.

    CNN said that Bale, who is in China for the premiere of his latest film "The Flowers of War," approached the news network to try to meet Chen. They took an eight-hour car journey to Chen's village from Beijing.

    "This doesn't come naturally to me," Bale said to CNN. "But this was just a situation, I said, I can't look the other way."

    Internet users took to the Twitter-like microblogging service, Weibo, to applaud Bale's visit to see the "blind man." Aauthorities have blocked searches for "Chen Guangcheng."

    "Mr. Bale, I admire your courage and heart," said a microblogger called "Chen Xiaoying wants to support."

    "But next time if you want to save a person, remember to wear your Batman suit.The Chinese official media will not report this, it's up to CNN to broadcast it."

    Chen angered Shandong officials in 2005 by exposing a program of forced abortions as part of China's one-child policy. He was formally released in September 2010 after four years in jail on a charge of "blocking traffic."

    "What I really wanted to do is to shake the man's hand and say: 'Thank you,' and tell him what an inspiration he is," Bale told CNN.

    (Reporting by Sui-Lee Wee, Additional reporting by Beijing Newsroom,; Editing by Ken Wills and Ron Popeski)

    Source: http://us.rd.yahoo.com/dailynews/rss/movies/*http%3A//news.yahoo.com/s/nm/20111216/en_nm/us_china_bale_activist

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    The individual mandate: Health-care's inherent controversy (The Week)

    New York ? President Obama's health-care bill requires that every American have health insurance. Is that constitutional?

    Who first proposed making health insurance compulsory?
    The Heritage Foundation, a conservative think tank. In the late 1980s, when Democrats were pushing to require employers to provide health insurance, the foundation started thinking about ways to achieve universal coverage without placing a heavy burden on business. Its experts soon encountered the "free rider" problem: In a system where insurers are barred from refusing applicants with pre-existing conditions, many people ? especially the young and healthy ? would only buy a policy when illness struck. But if only sick people bought coverage, insurers would pay out more in doctors' bills than they received in premiums, and quickly go bust. To overcome this death spiral, the Heritage Foundation suggested that every American be required to buy health insurance, a requirement known as the individual mandate.

    Which politicians took up that idea?
    Many Republicans did in the early 1990s, after President Clinton introduced a plan that would have forced companies to cover employees. "I am for people, individuals ? exactly like automobile insurance ? having health insurance and being required to have health insurance," said Newt Gingrich, then House minority whip, in 1993. When the Clinton plan collapsed in 1994, talk of the individual mandate died with it. But a decade later, Mitt Romney, then the governor of Massachusetts, resurrected the concept for his state health-care plan, which requires residents to buy health insurance or pay up to $1,212 in annual penalties. "It's a Republican way of reforming the market," Romney said when the law debuted, in 2006. "[To have] people show up [at a hospital] when they get sick, and expect someone else to pay, that's a Democratic approach."

    SEE MORE: A conservative judge's 'compelling' defense of 'ObamaCare'

    ?

    So why did Obama adopt a Republican proposal?
    At first, he didn't want to. During his 2008 campaign for the Democratic nomination, Obama ran a TV ad criticizing rival candidate Hillary Clinton's support for a mandate, saying she would force everyone "to buy insurance, even if you can't afford it." But after President Obama and the Democratic Congress began to construct his health-care plan, advisers warned that free riders would undermine the objectives of extending insurance coverage to anyone who wanted it. For health reform to work, young, healthy people had to be pushed into the pool, to spread cost and risk. So the president allowed his 2010 Affordable Care Act to incorporate a provision that, by 2014, all Americans must have health coverage or face a tax penalty. Conservatives decried that directive as a gross infringement of individual liberty, and their anger helped fuel the rise of the Tea Party. Twenty-six states and the National Federation of Independent Business are now challenging the mandate's constitutionality at the Supreme Court, which will make a final judgment by June.

    How has Obama responded?
    His administration argues that the mandate is authorized by the Constitution's commerce clause, which allows the federal government to regulate interstate economic activity. Several conservative judges agree. In a November appeals court decision that upheld the mandate, Judge Laurence Silberman, a Reagan appointee, declared that Congress must "be free to forge national solutions to national problems." And this summer, Judge Jeffrey Sutton ? a George W. Bush appointee to the 6th Circuit Court of Appeals ? concluded that the individual mandate is a legally sound way to prevent taxpayers and hospitals from having to pick up the cost of treating the uninsured. "Not every intrusive law is an unconstitutionally intrusive law," he wrote.

    SEE MORE: Should the Supreme Court's 'ObamaCare' arguments be televised?

    ?

    Haven't other judges disagreed?
    Yes. In August, the 11th Circuit Court of Appeals declared that it could find no precedent for ordering Americans to buy health insurance. "Even in the face of a Great Depression, a World War, a Cold War, recessions, oil shocks, inflation, and unemployment," the majority wrote, "Congress never sought to require the purchase of wheat or war bonds, force a higher savings rate or greater consumption of American goods." Other federal judges and critics of "Obamacare" warn that the mandate sets a dangerous precedent that the government could use to make citizens purchase whatever it deems good for them ? or for the economy. "Congress could require every American to buy a new Chevy Impala every year," said a 2009 Heritage Foundation report.

    What happens if the individual mandate is voided?
    It depends. If the Supreme Court decides that the Affordable Care Act can't function without the individual mandate, it could strike down the entire law. But it might declare the mandate "severable," and remove that particular part of the law, while letting the rest of it limp along, with far fewer uninsured people covered and less ability to rein in costs. Some experts have proposed that instead of the uninsured being required to buy insurance, they could be "nudged" into the health-care system by giving them a window of time during which they could buy insurance relatively inexpensively; once that window closed, the cost would rise sharply. The problem with any alternative to the individual mandate, said Paul Ginsburg, president of the Center for Studying Health System Change, is that it would have to be approved by the bitterly divided Congress. "You can't expect that in these times," he said. "People don't work on these compromises too readily anymore."

    SEE MORE: The Supreme Court and 'ObamaCare': A concise guide

    ?

    How the Supreme Court could punt
    Next year's Supreme Court hearing has been billed as judgment day for Obama's Affordable Care Act. But it might end with no judgment at all. Before the justices rule on the individual mandate's constitutionality, they will first have to decide whether the 1867 Anti-Injunction Act bars the claimants' challenge. That law prevents citizens from challenging the legality of a tax before it goes into effect. If the court finds that the penalty for defying the Affordable Care Act's mandate is a tax, they could push a legal challenge back to 2015, when the first fines will be levied. And that, said Simon Lazarus, an expert at the National Senior Citizens Law Center, might "be a good solution for a court that doesn't really care to be Public Issue No. 1 in an election year."

    View this article on TheWeek.com
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    Source: http://us.rd.yahoo.com/dailynews/rss/politicsopinion/*http%3A//news.yahoo.com/s/theweek/20111216/cm_theweek/222477

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    Friday, December 16, 2011

    First low-mass star detected in globular cluster

    ScienceDaily (Dec. 15, 2011) ? Even the most powerful high-tech telescopes are barely able to record remote low-mass and thus faint stars. Together with researchers from Poland and Chile, an astrophysicist from the University of Zurich has now detected a low-mass star in globular cluster M22 for the first time through microlensing. The result indicates that the overall mass of globular clusters might well be explained without enigmatic dark matter.

    Until now, it was merely assumed that low-mass and therefore extremely faint stars must exist. However, in view of the vast distances and weak luminosity of low-mass stars, even the most modern telescopes fail. Together with a Polish-Chilean team of researchers, Swiss astrophysicist Philippe Jetzer from the University of Zurich has now detected the first low-mass star in the globular cluster M22 indirectly. As their recent article accepted in Astrophysical Journal Letters reveals, it involves a dwarf star that has less than a fifth of the mass of our sun and is 3.2 kiloparsecs from it (one kiloparsec corresponding to 3,210 light years).

    The evidence, which enables the mass to be determined highly accurately, is based upon so-called gravitational microlensing and requires the highest technical standards available. The measurements were carried out on the ESO VLT 8-meter telescope with adaptive optics at the Paranal Observatory in Chile.

    Major breakthrough in 2000

    In August 2000 Polish astronomers discovered that the brightness of a star located at about two arcminutes from the center of the globular cluster M22 increased for twenty days. They suspected that the phenomenon was due to so-called gravitational microlensing, which is based on the fact that light spreads along a curved path near large masses as opposed to in a straight line. The brightness of the star increases briefly through the gravitation of an object crossing in front of it, which acts as a lens. The star -- the source, in other words -- appears brighter for a short time before fading again after passing by the lens. In order to confirm this supposition, the astronomers turned to gravitational microlensing specialist Philippe Jetzer from the University of Zurich. The control measurement carried out on July 17, 2011 at the Paranal Observatory confirmed the hypothesis. "The detailed analysis revealed that the source was outside M22," explains Jetzer. "A low-mass star acted as a lens within the globular cluster itself."

    Low-mass stars instead of dark matter?

    The first evidence of a low-mass star in a globular cluster is extremely important for astrophysics as it sheds new light on the structure of globular clusters. Until now, the overall mass of globular clusters could not be explained other than with dark matter, the existence of which, however, is unproven. "The overall mass or at least a significant proportion of globular clusters can now be explained through the presence of previously undetected low-mass, faint stars," says Jetzer.

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    Story Source:

    The above story is reprinted from materials provided by University of Zurich.

    Note: Materials may be edited for content and length. For further information, please contact the source cited above.


    Journal Reference:

    1. P. Pietrukowicz, D. Minniti, Ph. Jetzer, J. Alonso-Garcia, A. Udalski. The first confirmed microlens in a globular cluster. ApJ Letters, (forthcoming) [link]

    Note: If no author is given, the source is cited instead.

    Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

    Source: http://www.sciencedaily.com/releases/2011/12/111215094817.htm

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