IEEE Spectrum

Volume 24 Issue 9 • Sept. 1987

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Displaying Results 1 - 25 of 29
  • [Front cover]

    Publication Year: 1987, Page(s): c1
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  • [Front inside cover]

    Publication Year: 1987, Page(s): c2
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  • [Advertisements]

    Publication Year: 1987, Page(s):1 - 2
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  • News log

    Publication Year: 1987, Page(s): 3
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  • Contents

    Publication Year: 1987, Page(s):4 - 5
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  • [Advertisements]

    Publication Year: 1987, Page(s):6 - 7
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  • Reflections: Celebrities as engineers

    Publication Year: 1987, Page(s):8 - 11
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    Last December the marketing folks at my company decided that it was time to make a high-tech television commercial. Cameras, lights, crew members, assorted directors, and Cliff Robertson descended on our labs. Someone found that the molecular-beam epitaxy machines made a perfect backdrop, probably owing to the dry ice clouds wafting about them in the best sci-fi tradition. View full abstract»

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  • Forum

    Publication Year: 1987, Page(s):12 - 13
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  • Book reviews

    Publication Year: 1987, Page(s):14 - 17
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  • Technically speaking

    Publication Year: 1987, Page(s): 18
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  • Whatever happened to: Microwave powered aircraft?

    Publication Year: 1987, Page(s): 19
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    Airborne craft powered by microwave beams from the earth's surface will never run out of fuel. Their route may be circumscribed by the pattern of the energizing beams, but they can stay aloft indefinitely. That fact makes microwave-powered aircraft attractive for surveillance, for relaying communication signals, and for atmospheric data gathering. Moreover, unburdened by a crushing weight of fuel,... View full abstract»

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  • Spin-offs: Navy sensor on the brain

    Publication Year: 1987, Page(s):20 - 21
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (16510 KB)

    Acoustic sensors derived from U.S. Navy equipment used to locate enemy submarines could help doctors detect brain aneurysms, according to scientists at the U.S. Naval Research Laboratory. Brain aneurysms dilate blood vessels and may cause them to rupture, leading to crippling or even death if the aneurysm is not found soon enough and cannot be controlled. View full abstract»

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  • Managing technology

    Publication Year: 1987, Page(s):22 - 24
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    It's not enough to know which organizational and behavioral factors are important predictors of project success — managers must be able to relate those factors to the particular stages of their projects. That's the conclusion Jeffrey K. Pinto and Dennis P. Slevin draw from their study of some 425 engineering, research and development, and construction projects of all sizes across the United States... View full abstract»

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  • Spectral lines: Electromagnetic hazards

    Publication Year: 1987, Page(s): 25
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    To the public's worries about electric fields, microwave radiation, nuclear power, video terminals, and computer keyboards may be added a new concern — the effects of low-frequency electromagnetic fields. A study commissioned by the State of New York was interpreted by the state health official who administered the study, David Carpenter, as appearing to link exposure to electromagnetic fields wit... View full abstract»

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  • USS Stark: What really happened? Human error may have triggered the disaster, but questions have been raised about the frigate's electrotechnical defenses

    Publication Year: 1987, Page(s):26 - 29
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (4842 KB)

    The attack on USS Stark on May 17, 1987, is examined, focusing on the role that the frigate's electronic defense system might have played in the disaster. Problems with the SLQ-32 radar warning receiver and human factors are discussed. Speculations regarding the scenario that led to the incident are offered. View full abstract»

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  • Power semiconductors: Fast, tough, and compact: MOS field-effect transistors and gate turnoff thyristors are bringing new levels of performance in switching frequencies and current and voltage ratings

    Publication Year: 1987, Page(s):30 - 35
    Cited by:  Papers (14)
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    New devices that are challenging the silicon-controlled rectifier are considered. Among them are the high-power bipolar-junction transistor (HPBT), the power MOS field-effect transistor (MOSFET), the gate turnoff (GTO) thyristor, and the insulated-gate bipolar transistor (IGBT), sometimes called a conductivity-modulated field-effect transistor (COMFET). Also important are the static-induction or s... View full abstract»

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  • How to program parallel processors: Software developers must divide problems into manageable chunks and ensure efficient communications between computing elements

    Publication Year: 1987, Page(s):36 - 41
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (38519 KB)

    The special features of parallel programming are discussed. These consist mainly in dividing the problem into segments that will execute in parallel, and determine how the processor will communicate and synchronize with one another. The role of architecture is described, and the task of expressing problems in parallel form is addressed. The issue of efficiency is examined. View full abstract»

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  • Communications and navigation: From walkie-talkies and fm vehicular radios to navigational aids, electronics extended military command and control to unprecedented distances

    Publication Year: 1987, Page(s):42 - 46
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    The role of radio communication and navigation technology during World War II is discussed. The discussion covers: walkie-talkies and handie-talkies; the AN/TRC (antrac) radio relay systems; the OSS two-way system; the drawbacks of German (AM) radio; the Loran and British pulsed navigation systems; and instrument landing. View full abstract»

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  • Breaking the enemy's code: British intelligence deciphered Germany's top-secret military communications with colossus, an early vacuum-tube computer

    Publication Year: 1987, Page(s):47 - 51
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    The contributions of Allied cryptanalysis to the outcome of countless battles, campaigns, and operations during World War II are discussed. The development of cipher machines for unraveling stubborn codes is described. The use of Colossus (the British high-speed programmable machine) to break the code produced by the German Enigma encryption machine is discussed in some detail. View full abstract»

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  • Quitting to start your own company: Tensions run high when creative employees leave to set up a business based on knowledge gained and skills honed at their previous employer

    Publication Year: 1987, Page(s):52 - 55
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (10705 KB)

    The legal issues that ensue when employees leave a company to start a competing company of their own are addressed. Ownership of trade secrets, the rights to creative ideas, and the use of noncompete agreements are examined. The importance of well-drafted agreements to be signed when engineers are hired, to clarify the rights, duties, and expectations of both employers and employees is discussed, ... View full abstract»

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  • EEs' tools & toys

    Publication Year: 1987, Page(s):56 - 57
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  • Calendar meetings □ conferences and conventions

    Publication Year: 1987, Page(s):58 - 60
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  • New and recent IEEE publications

    Publication Year: 1987, Page(s):61 - 63
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  • IEEE tables of contents: For current and future publications

    Publication Year: 1987, Page(s):64 - 66
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  • Papers are invited

    Publication Year: 1987, Page(s):67 - 75
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