Changes in how people approach a task are interesting and important, but without careful evaluation of strategy shifts, better expert performance might wrongly be attributed to more fundamental differences in perception and memory.

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The remainder of the vote is cast by national expert juries, who based their scores on a dress rehearsal performance Friday night.

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The wood is now being transformed into a harp by an expert in Austria and Mr Lowings hopes it will be ready for its first performance in August.

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Expert witnesses and police officers may be able to withstand the pressure of their performance being broadcast, he said, but "fearful or intimidated witnesses would refuse to attend court, which could impact seriously if not terminally on the successful prosecution of a case".

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"I don't know of another system that is going to be anywhere near the performance and the power of this machine" in China, said Jack Dongarra, a supercomputer expert on the Oak Ridge research staff who is a professor at the University of Tennessee and recently inspected the system in Tianjin last week.

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