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IEEE Spectrum

Issue 5 • May 2002

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Displaying Results 1 - 10 of 10
  • Choosing between DVD-audio and super audio CD?

    Publication Year: 2002, Page(s):60 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (230 KB) | HTML iconHTML

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  • The toughest transistor yet [GaN transistors]

    Publication Year: 2002, Page(s):28 - 33
    Cited by:  Papers (40)  |  Patents (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (499 KB) | HTML iconHTML

    GaN transistors withstand extreme heat and are capable of handling frequencies and power levels well beyond those possible with silicon, gallium arsenide, silicon carbide, or essentially any other semiconductor yet fabricated. Frequency and power-handling capabilities of this caliber could make all the difference in amplifiers, modulators, and other key components of the advanced communications ne... View full abstract»

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  • Why so few women?

    Publication Year: 2002, Page(s):65 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (234 KB) | HTML iconHTML

    Women account for only 15-20 percent of computer science majors in the United States, and the percentage has dropped over the last five years. By avoiding computers, women may be missing out on the generous salaries and abundant career opportunities in information technology. The paper considers this troubling trend View full abstract»

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  • Europe cracks down on e-waste

    Publication Year: 2002, Page(s):46 - 51
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (797 KB) | HTML iconHTML

    Electronic waste in Europe is growing so fast that it will double between 1998 and 2010, according to European Union documents. And in 1998 it already measured in the region of six million metric tons. The pace of its accumulation worries public officials because e-waste contains lead and other chemicals that can leak into water supplies. As consumers and businesses dump their old computers, regul... View full abstract»

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  • Talk is cheap, text is cheaper [mobile messaging]

    Publication Year: 2002
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (173 KB) | HTML iconHTML

    E-mail was the first killer application for the Internet-now messaging is coming to cellphones. How does a software application go from zero to 100 million users in a couple of years? One way is to be built into Windows. Another is for the world's largest cellphone manufacturers to make it a standard. That has not happened yet, but it's about to. Three titans of the mobile world, Nokia, Motorola, ... View full abstract»

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  • A cellphone for all standards

    Publication Year: 2002, Page(s):34 - 39
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    A new technology called software-defined radio (SDR) could make it possible to keep the same cellphone when switching from one service provider to another to take advantage of deals and new service options, assuming, of course, that service providers choose to adopt it. Software programmability can tailor a cellphone-or any other kind of radio-so that it operates on whatever radio-interface standa... View full abstract»

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  • Power sector reform-blackouts before policy

    Publication Year: 2002, Page(s):14 - 15
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    Over the last decade, in developing countries everywhere from Asia to the Americas, government-run utilities have been on notice that their financing must change. The private sector must somehow replace the World Bank as the main source of funding for energy projects in general and for electric-power facilities in particular. The recent history of many of those nations has been discouraging. Warni... View full abstract»

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  • Making unbreakable code

    Publication Year: 2002, Page(s):40 - 45
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (251 KB) | HTML iconHTML

    A product is on the way that relies on the quantum properties of photons to keep out eavesdroppers. All of them. The battle between codemakers and codebreakers is centuries old, but at the start of the 21st century, could it finally be drawing to a close? Physicists are putting the finishing touches to a method of encrypting messages that is more secure than anything that has gone before. Unlike t... View full abstract»

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  • Delayed arrival for US baggage screening?

    Publication Year: 2002, Page(s):16 - 19
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (429 KB) | HTML iconHTML

    The US Department of Transportation (DOT) calculates that 2200 explosives-detecting luggage scanners will be needed to equip all 429 civilian airports in the United States by 31 December 2002, as required by the Aviation and Transportation Security Act passed in the wake of 11 September. But earlier in 2002, when the act's new baggage security rules took effect, only 161 of the machines needed to ... View full abstract»

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  • Dead patents walking

    Publication Year: 2002, Page(s):52 - 54
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    With 562 US patents to his credit, Jerome Lemelson was the most prolific inventor since Thomas Edison (1093 patents). His inventions pop up in camcorders, VCRs, bar code readers, automated teller machines, machine vision systems, and more. But Lemelson, who died in 1997 at age 74, may have accomplished less than meets the eye. His detractors attribute much of his success to the use of Byzantine ta... View full abstract»

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