Russia is thus, by even the most optimistic estimates, vulnerable to a sustained decrease in the price of oil.
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The savings-and-loans mess in America, for instance, was prolonged by easy accounting rules that allowed overly optimistic estimates of the industry's solvency.
Even on the most optimistic estimates, Dr Odimba will have to carry on referring his patients to Nouakchott General for some time to come.
"The most optimistic estimates foresee enough new jobs to cut unemployment by two-thirds to 8%, down from 21%, and to increase the median wage by 40%, " Mr Kerry said.
"Reform is primarily focused on health care coverage and reducing health care costs, and even optimistic estimates predict that any proposal on the table will still leave millions without access to affordable care, " said Rachel Ward, one of the authors of the "Deadly Delivery" report.
According to polysilicon producer Renewable Energy, the move by the Chinese government to set up preferential tariffs to boost cleaner energy sources could herald the shift in demand for solar panels from Europe to Asia and the U.S. Some optimistic estimates suggest that China may add as much as 7 GW this year, which is roughly equal the capacity added in Germany in 2011.
That was way, way above even the most optimistic Street estimates.
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Some analysts were over optimistic in their estimates of iPad sales at 20 million.
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Based on an annual 24 percent growth rate, the CINIC estimates are optimistic, but not entirely unattainable, given the country's burgeoning middle class and the proliferation of cheaper, more powerful computers throughout the mainland.
What the researchers found is that from the first to the second half of the study, optimistic participants updated their estimates based on the information given, but only if the information on actual averages was better than expected.
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Many said estimates were too optimistic, while others described them as being a bit high.
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Published just a few months ago, the report concluded that the program funding and schedule estimates were overly optimistic in light of the complexity of the challenges facing the program.
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Professor Alex Kemp, a petroleum economics expert at the University of Aberdeen, described the Falklands oil reserve estimates as "optimistic, " adding that even if they are proven, the cost of exploiting them could still be prohibitive.
If this is in fact the case, those bullish analysts will push estimates lower from currently optimistic levels.
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Right about now is the time when Wall Street strategists and economists begin ratcheting down GDP estimates and tempering their optimistic year-beginning calls with a dash of bitters and a dollop of doubt.
Nonetheless, MacArthur thinks the analysts are too optimistic on their price targets and earnings estimates.
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For example, experience with public-private partnerships shows that cost-benefit estimates can sometimes prove wildly optimistic.
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Third they disappointed investors with over-optimistic content negotiation assumptions and wrong subscriber estimates.
Even in 2035, with the most optimistic scenario, the International Energy Agency estimates that just 2.4% of the world's energy will come from wind and only 1% from solar.
We know that Wall Street had exuberant predictions for twelve month forward EPS estimates that are likely still too optimistic.
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Even the consensus sell-side long-term EPS growth forecast, normally seen as a casually-generated and typically optimistic ornament to the overall suite of analyst estimates, calls for EPS to decline at a 5.2% annual rate.
Moreover, he has observed that initial estimates on construction projects tend to be optimistic.
As sobering as the U.S. debt estimates are, they are incomplete and optimistic.
Growth estimates for last quarter range from a relatively optimistic 3.3%, from HSBC, to a gloomy 1.5%, issued by JP Morgan.
Federal regulators then raised catch rates to nearly five times the sustainable level based estimates now believed to have been far too optimistic.
It appears investors are optimistic about a strong earnings quarter from AAPL, which missed estimates last quarter for the first time in 12 quarters.
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Collecting each bank's estimates of its rivals' borrowing rates would help identify any over-optimistic self-assessment.
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"This means that current estimates for how quickly commercial fisheries will recover from declines and over-fishing are probably far too optimistic, " they added.
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