Dr Lieu supposed that light, travelling over very long distances, would have to spread out a bit if there was any uncertainty in time.
The report notes that employers endure significant uncertainty, time, and expense (government fees and legal costs) in hiring skilled foreign nationals, indicating that hiring the best candidate for the job, whether U.S.-born or foreign-born, is the primary consideration for employers.
The oil and gas industry has to live with that uncertainty all the time.
Italy remains mired in recession and now faces weeks of political uncertainty at a time when it can least afford it.
The ratings firm lowered Italy's credit rating by one notch to triple-B-plus, three steps above "junk" territory, citing concerns about political uncertainty at a time of economic weakness.
The blanks yet to be filled in will be a source of uncertainty for some time to come, which is usually considered a negative aspect of the legislation.
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Alex Attwood told the environment committee there was now a movement from a period of uncertainty into a time when people would have to address the issues of the scale of local government organisation.
But he also was urged to name an experienced hand in this time of uncertainty.
First, they deem pharmaceuticals as safe at a time of uncertainty in Europe and slowing growth in China.
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At the same time, uncertainty about the economy kept stock and stock fund allocations from rising significantly at the expenses of bonds and bond funds.
Obama Care was passed in a time of uncertainty and confusion.
Meanwhile, yet another president in the midst of his country's most trying period, insecurity, religious clashes and economic uncertainty, found time to pose for Italian Vogue.
"You don't want to write a check to the IRS, especially in this time of uncertainty, " says Jonathan Forster, a tax lawyer at Greenberg Traurig in McLean, Va.
Again, it is our strong belief that the test is not a focus on themselves but a focus on the Haitian people, particularly in a time of uncertainty as we point toward an election.
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"This is a time of uncertainty, but my career in public service gives me hope that the leaders of this nation will come together to resolve the challenges facing this country and to seize the opportunities of the 21st century, " Panetta said.
Mine was a broader answer to, whether it is Duvalier or anybody else -- again, whether in power or out, coming into the country in a time of uncertainty, it is important that we focus on peace and we focus on the people of Haiti.
However, Mr Clegg said he could "totally understand those feelings" at a time of economic uncertainty.
For the time being, uncertainty is the only certainty in Cardiff's new Assembly.
Now, you, Class of 2009, are about to enter the next phase of your life at a time of great uncertainty.
This disruption comes at a time of increasing uncertainty for PC demand.
Such a capability will likely be at a premium in a time of growing uncertainty over continued U.S. access to many overseas facilities.
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"We believe with this decision by the president today that a time of enormous uncertainty has been transformed into a great opportunity, " Kerry said.
CAPM, which deals harshly with both long time horizons and uncertainty.
These calculations can be difficult because of uncertainty over exactly how much time an inmate had spent in police custody or on remand during a trial.
Meantime, Spanish wind developer Gamesa is suspending its plans to build off the Virginia coastline, citing the need for financing at a time of political uncertainty.
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And they are doing so at a time of economic uncertainty: a depressed stockmarket and indications that Malaysia's breakneck pace of industrialisation may not be sustainable.
Even at a time of great uncertainty, their stories remind us that there are still discoveries waiting to be made and unlimited potential waiting to be tapped.
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