But nighttime satellite imagery may offer a good proxy for its use now.
Also, more importantly, the gap between US corporate sector prices and unit labor costs - a proxy for profit margins - is at 20-year highs.
In Sri Lanka the Tamil National Alliance, once seen as a proxy for the Tigers, has announced its backing for Mr Fonseka, as the only way to thwart Mr Rajapaksa.
These calls can be made directly to the third-party sources from the browser or back to the originating server, which ACTS as a proxy for the third-party content.
She is acting as proxy for her husband.
Betting on container rates, which are a proxy for economic activity, may also appeal to speculators.
Previous research indicates that index-to-ring-finger (2D:4D) ratios are a good proxy for how much testosterone we were exposed to in the womb.
Whether an element is a solid, a liquid or a gas depends on how its atoms interact with each other. But how they interact with other substances, such as gold, ACTS as a proxy for that behaviour.
This is just a proxy for old-fashioned racism.
There was mixed news in the PMI's gauge of input costs, which are a proxy for producer price inflation.
Among women who had taken over a year to conceive-possibly a proxy for longer use of the drugs-the risk increased eightfold.
The ISI has long seen the Afghan Taliban as a proxy force, a way to ensure its influence on the other side of the border and keep India's influence at bay.
Gap between US corporate sector prices and unit labor costs - a proxy for profit margins - is at 20-year highs.
It is often the case with consumer products that demographics are used as screening criteria to select interview subjects, but even in this case, they should be serving as a proxy for a hypothesized behavior pattern.
The current interest rate is sometimes used as a simple (but incorrect) proxy for discount rate.
The proxy forwards the request to the server and the server responds with a JSON data stream, which the Dojo widget easily parses to display data.
The Italian Banks have troubles, but they seem to be acting as a proxy for the general health of Italy's sovereign debt.
One reason for the expense is perception: students view price as a proxy for quality; universities worry that low fees will signal a second-rate product.
The model depicts aerosol optical thickness, a measure of the amount of light that the aerosols scatter and absorb, and a proxy for the number of particles in the air.
In modern society, price is probably a good proxy for such collective wisdom.
We enclose a form of proxy for use at the Annual General Meeting.
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