On the iPhone 4, multitasking doesn't mean every app can work fully in the background.
And the new generation has the backing of an old hand - Professor George Smoot, Nobel prizewinner for his work on the cosmic microwave background and one of the world's most respected physicists.
Others that fully work in the background include Internet calling apps, and those that perform long downloads.
I'd love both of those apps to work on the background of my device and using those apps on Android and WebOS phones is a big differentiator.
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But after a few weeks, it became natural and my response times became faster and faster until the mobile aspect of working melted into the background and it just became work.
Tumblr users range in all age groups and students in high school and even middle school can begin putting together their online resume with ease, thanks to all of the tools available to use with a professionally designed background to pick to accompany the work.
"It was a fundamental part of her image - emphasising the value of hard work, her background as a grocer's daughter, " says Prof Toye.
Headteachers in the borough were furious at the manner of her departure, though critics locally say she was hampered in the post by having no social work background.
It has a very simple structure: chronologically, Pickover walks through some of the most famous eponymous scientific laws, touches on their historical background and describes how the laws themselves work.
The UK and US covers differ, however both feature an image of the Italian poet Dante - whom Brown said inspired his latest work - and are set against a background of the city of Florence.
David then hired an intern with a fashion background to work on the fabric of the prototype.
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Mr. Baker said that at Thursday's meeting, he suggested the administration work on ways to push states to submit mental-health records into the background-check system, an emerging area of consensus in response to Newtown.
However, NRA chief executive Wayne LaPierre told the panel that the current background check system doesn't work, so expanding it would only create an unmanageable government bureaucracy instead of reducing gun crime.
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It never ceases to amaze me how background conditions work out to continue the long history of the market making most of its gains each year in the winter months and when there is a correction of any degree it almost always takes place in the unfavorable season between May and November.
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Under the White House and senators' plans, undocumented immigrants would be allowed to live and work in the US legally as long as they pass background checks and pay back-taxes.
The basic background is that for such a single currency to work it is necessary for there to be fiscal transfers across regions within the currency area.
In the background though are a few rules that do make it work.
They are also likelier to have lower incomes in early adult life regardless of their skills or social background, something that may partly be the result of discrimination at work.
Its COO, Geoffrey Andrews, told me that the company refused to work with a client in Colorado that wanted to do a background screen to see if job applicants were gay or not.
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But Dr Mousseau suggests a more likely explanation is that evolution has already been at work near Chernobyl, killing off individual birds that cannot cope with the background radiation and allowing the genes of those that have some tolerance to be passed on.
The opportunity to pursue advanced education, career growth, entrepreneurial passions and material comfort based on ambition and hard work rather than race, class, or background have not only made the United States a preeminent world power, but a model for nations everywhere and a beacon of hope for generations of people like me.
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"We did lot of work on creating a completely digital environment - the entire field, the forest in the background is completely digital - and on digital doubles, digital replacements for humans, " she said.
Still, the Jets may need Haley or someone with a similar background to help develop a formidable passing attack and work with quarterback Mark Sanchez, who will enter a make-or-break fourth season with the franchise.
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The work's plain and often silken take on Baroque-era dance aesthetics came with an apt scrawl in the background, an enlargement of one of Ms. Brown's own drawings.
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