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Spectrum, IEEE

Issue 11 • Date Nov. 1996

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Displaying Results 1 - 9 of 9
  • A tour of the calculus [Books]

    Publication Year: 1996
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    Freely Available from IEEE
  • Beyond the third dimension [Books]

    Publication Year: 1996
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    Freely Available from IEEE
  • Chernobyl's stressful after-effects

    Publication Year: 1996 , Page(s): 26 - 34
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4884 KB)  

    The explosions and fires that wrecked the Chernobyl nuclear reactor brought on what is universally recognized as a catastrophe. Besides the immediate fatalities and human upheaval, which left hundreds of thousands disoriented, anxious about their own health, and bitterly concerned about their children, the accident inflicted incalculable material losses. In economic terms alone (though not in terms of casualties), Chernobyl was the greatest peacetime industrial disaster of all time. Its 10th anniversary was a fitting occasion for stocktaking-for determining what has been and has yet to be learned about the event, and for improving efforts to help the victims. The author discusses the health of those nearest the blast, the thyroid cancer epidemic, research and the puzzling results regarding leukaemia, stress related health effects, and long term and wider health and safety issues View full abstract»

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  • The Beckman Institute for Advanced Science and Technology

    Publication Year: 1996 , Page(s): 54 - 60
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    The Beckman Institute for Advanced Science and Technology, located on the campus of the University of Illinois in Urbana-Champaign, was conceived in 1983, when two groups of campus administrators and professors were asked by Theodore L. Brown, then vice chancellor for research, to come up with a plan to facilitate research on the Illinois campus. The whole institute had been structured to focus on three related research areas: molecular and electronic nanostructures, biological intelligence, and human-computer intelligent interaction. These three main research themes are outlined View full abstract»

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  • Testing systems on a chip

    Publication Year: 1996 , Page(s): 42 - 47
    Cited by:  Papers (65)  |  Patents (3)
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    Developments in fault-finding circuits built into ICs which will disclose defects in today's and tomorrow's block-based designs are examined View full abstract»

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  • Spread spectrum data leap through AC power wiring

    Publication Year: 1996 , Page(s): 48 - 53
    Cited by:  Papers (22)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2772 KB)  

    There have been two serious impediments to the growth of the power-line carrier (PLC) communications industry in particular, and the home and building automation market in general: line noise, which plays havoc with communications' reliability, and the lack of a standard communication network protocol. Both stumbling blocks have been removed-the first, by the development of spread-spectrum PLC technology, which all but eliminates the noise impediment, and the second, by the industry-wide adoption of the Electronic Industries Association's Consumer Electronics Bus (CEBus) standard. The author discusses the use of spread spectrum for distributed control systems. The techniques of spread spectrum and carrier-detect narrowband communication are compared. Impulse noise is also discussed as are frequency hopping and the CEBus approach View full abstract»

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  • Blocking in a system on a chip

    Publication Year: 1996 , Page(s): 35 - 41
    Cited by:  Papers (26)  |  Patents (12)
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    With more and larger functions being implemented on a single piece of silicon, true systems on a chip are being created. At the physical level, this integration derives from progress in process technology. But from the circuit designers' viewpoint, tools and methods are less help than they might be. In effect, to construct a system on a chip means more than the integration of millions of transistors. A set of complicated and rapidly evolving technologies and standards for telecommunications, multimedia, and PCs must be mastered, too. Also, the software content of most electronic systems has been growing for several years and now often accounts for a major part of the final product and hence of the design effort. Since a system on a chip is a system, a design methodology for generating such complex ICs will frequently have to address the software as well as hardware needs. Further more, as the size and complexity of chips has grown, so too has the task of verification. Verifying the design of a chip containing a million gates of logic presents a formidable challenge of its own. The complexity of large designs calls for a shift in the design paradigm to one based on reusable, high-level building blocks. Currently, most functional blocks are created by hand and are seldom used again. Reusable blocks, though, are not enough. To deliver on the promise of more productivity and less time to market, designers need reinforcements-a methodology and tools with which to integrate the blocks efficiently, plus standards that support the creation of reusable blocks, their exchange, and their integration View full abstract»

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  • PRML detection boosts hard-disk drive capacity

    Publication Year: 1996 , Page(s): 70 - 76
    Cited by:  Papers (3)  |  Patents (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3124 KB)  

    Over the past 10 years or so, the bit-capacity of mass-market hard-disk drives has increased 100-fold-the reward of improvements in read/write heads, magnetic materials, head-positioning systems, and much else. But as advances in those well-worn areas grow more costly and difficult, attention is turning to the read-channel electronics as a way to increase disk capacity and throughput rates in the future. More specifically, with the enormous advances made in mixed-signal semiconductor technology, it recently became practical to apply partial-response, maximum-likelihood (PRML) detection to low-cost drives. The key advantage of PRML is that it works with sequences of received data, rather than single bits, comparing data sequences and determining which one was most likely to have caused the observed signal. It is therefore more tolerant of intersymbol interference than pulse peak detection-today's most common read-channel technology View full abstract»

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  • Engineering a Web site

    Publication Year: 1996 , Page(s): 62 - 69
    Cited by:  Papers (2)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2572 KB)  

    The World Wide Web (WWW) is famous for weaving far-flung fans with like interests into true communities. It also puts a spin all its own on product and information delivery. Nowhere is this more apparent than in a global industry such as electrical and electronic engineering. The Web is still unmatched in its ability to receive and distribute information and software, and to encourage interaction and collaboration. These strengths stem from the Web's combination of many of the best features of existing media-audio, video, text, and graphics-to which it adds some unique new talents, such as the ability to manipulate information through software. Most corporations acknowledge the opportunities the Web presents. The paper presents some guidelines on how best to start turning them to advantage View full abstract»

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