In terms of reliability impact, more and more work is done in the lab, typically on a dynamometer (a device which measures force), to prove the major mechanical systems on the car.

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The GAARDIAN consortium, which completes its work this month, has developed equipment to provide real-time information about the reliability of GPS at airports or other sensitive locations using networks of probes.

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But tracking costs from one work center to another or entering shipping data for hundreds of packages before UPS arrives requires speed and reliability.

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While employers may have concerns about the reliability and trustworthiness of home workers, more than 70 percent of those surveyed felt their productivity would increase if allowed to work in a flexible environment.

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