Each stage of converting and transmitting power results in a loss of efficiency, but with technological improvements these losses are being reduced.

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"We're talking not only about a loss of jobs but, from my perspective, a negative impact to the safety and efficiency of the national airspace system, " he said.

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Jamba (JMBA) announced that it lost nine cents per share during the fourth quarter of 2012, beating estimates by a penny, and ahead of the loss of 15 cents per share in the same period last year, mainly due to growing efficiency.

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