The research appears in the October edition of CNS Spectrums: The International Journal of Neuropsychiatric Medicine.

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Bonds have continued to provide attractive returns, as rates fell across the maturity and credit spectrums.

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On June 7, the Federal Communications Commission announced its first-ever auction of spectrums devoted exclusively for paging services.

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More important for the "media landscape" are factors such as the growth of the Internet, the widening of cable spectrums and satellite broadcasting.

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Generally, most companies are listening in broad spectrums.

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Mr Kemp said the British armed forces had already shown their flexibility and ability to fight across spectrums, ranging from the light forces used in the Falklands, to the heavy forces deployed in the first Gulf war.

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This auction, which EE is taking part in, is to determine how the newly-available spectrums will shared out - with operators hoping to be get large parts in order to offer greater capacity, and therefore gain more potential customers.

BBC: Technology