IEEE Spectrum

Volume 32 Issue 2 • Feb. 1995

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Displaying Results 1 - 7 of 7
  • Radio astronomy: new windows on the Universe

    Publication Year: 1995, Page(s):18 - 19
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (945 KB)

    The author presents a review of the achievements and technological developments in the field of radioastronomy. Emphasis is placed on the work done at the National Radio Astronomy Observatory (NRAO), which is based at Socorro, New Mexico, USA. One of their principle instruments is the Very Long Baseline Array (VLBA). The author describes research topics which range from interstellar molecules, the... View full abstract»

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  • Keeping tabs on criminals [electronic monitoring]

    Publication Year: 1995, Page(s):26 - 32
    Cited by:  Papers (6)  |  Patents (30)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (798 KB)

    In the United States last year, there were 1.4 million offenders in prison-twice as many as there were 10 years ago-and another four million out on parole or probation. Criminal justice costs have kept pace: they now come to some US $90 billion a year, about a third as much as the bill for national defense. Yet bulging law enforcement budgets have made little dent in crime and none, it would seem,... View full abstract»

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  • Gallium arsenide joins the giants

    Publication Year: 1995, Page(s):33 - 40
    Cited by:  Papers (11)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (756 KB)

    Gallium arsenide has enjoyed a unique position in the electronics industry for more than 25 years. GaAs is emerging as the starting material for integrated circuits with one million or more transistors per chip. The technology today is firmly in the domain of high-performance, very large-scale integration (VLSI), with chip clock rates hitting 100 MHz and up, whilst maintaining a reasonable manufac... View full abstract»

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  • Where buses cannot go

    Publication Year: 1995, Page(s):41 - 45
    Cited by:  Papers (8)  |  Patents (59)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    No aspect of computer design is sacred, not even the system bus, which is giving way to switches in multiprocessing systems, where performance is key. System buses, which string computers together out of circuit boards, have come to strangle system performance in many cases. Another interconnection architecture, though, can free a system from the bus's clutch. Variously known as a switch, crossbar... View full abstract»

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  • Compact simulators for fossil-fueled power plants

    Publication Year: 1995, Page(s):46 - 51
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    The author describes how, in fossil fuel power plants around the world, a new breed of plant simulators is winning a following. These "compact simulators" are based on personal computer and workstation hardware and can model a plant's operations accurately and in real-time. They are both adaptable and mobile. With their aid, electric utilities are training more qualified power plant operators and ... View full abstract»

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  • M. George Craford [biography]

    Publication Year: 1995, Page(s):52 - 55
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (469 KB)

    The author presents a biography of M. George Craford, the inventor of yellow LEDs. His academic achievements, career history, and personal details reveal an adventurous heart which often urges this inventor along risky routes.<<ETX>> View full abstract»

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  • A mentor in hand

    Publication Year: 1995, Page(s):56 - 58
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (357 KB)

    The dictionary defines a mentor as a wise and trusted counselor or teacher. At every stage of our lives, every one of us depends upon such people. When we are young, our mentors are most often our mothers and fathers. As we mature, other mentors enter the picture: teachers, coaches, guidance counselors and professors, to name a few. Here, the author describes how engineering lives are no different... View full abstract»

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