Of course, measuring the output and efficiency of public services by the numbers of people they deal with is a pretty crude method.

ECONOMIST: Health and education

Second, in the 1970s there was a big gap between the quality of the output and the efficiency of, say, Japanese carmakers and their American peers.

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By the same token, renewable technologies are following similar output efficiency and cost reduction curves, while growing more quickly than most optimistic projections of just a few years ago.

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The higher the compression ratio, the higher the power output and the higher the thermal efficiency.

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In agriculture, creating a global productivity target would help countries focus on a key but neglected area: the efficiency and output of hundreds of millions of small farmers who live in poverty.

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No doubt, Israeli engineers and seismologists would be able to increase the efficiency and productivity of existing wells and so increase their output.

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In generation, lower procurement costs and improved efficiency levels compensated for 20% lower output, due in part to plant outages.

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What is set to happen in this parliament is that the output of the health and education services will continue to grow, though the efficiency gains will be smaller.

ECONOMIST: Health and education