Scientists in the Netherlands are now trying to establish a reliable method of measuring this rate.
For we do not include the effects of those three (laudable I might add) programs when measuring the poverty rate.
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It calculated breathing rate by measuring the amount of carbon dioxide exhaled with each breath.
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Picard and her colleague Rana el Kaliouby are commercializing these technologies through a company called Affectiva, which might revolutionize market research by unobtrusively measuring facial expressions, skin conductance and heart rate in subjects responding to new products.
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Many athletes use Strava to rank their own performances over time, measuring not only speed and distance but also heart rate, power output and other information.
South Africa's unemployment rate stands at 40% (by unofficial measuring), which makes all the more painful such a significant loss of entrepreneurial activity.
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Africa, by contrast, has enjoyed average real growth of 6% a year for a decade, a savings rate of nearly 25% of GDP, debt measuring less than 25% of GDP, a young and growing population, massive internal investment and a political situation which is more stable than it has been in fifty years.
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The dispersion is somewhat larger when measuring average annual returns (annualized return, recall, is the compounded or geometric rate of return during a multiple-year time period).
Measuring the effectiveness of these tools is hard, since nobody can know what the exchange rate would be in their absence.
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If the moon harbours ice, for example, measuring the amount of it at different depths could enable planetary scientists to work out the rate at which comets smashed into the lunar surface over its history, and that knowledge could then be plugged into models of the formation of the solar system.
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