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IEEE Potentials

Issue 2 • Date April 1992

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Displaying Results 1 - 7 of 7
  • Acoustic resonance spectroscopy (ARS)

    Publication Year: 1992, Page(s):10 - 13
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (738 KB)

    The basics of acoustic resonance spectroscopy (ARS), which provides data about an object's physical structure and composition, are explained. In ARS, one actively excites a large number of resonances (normal modes) in an object that has no internal vibrations by slowly sweeping the excitation frequency to obtain an acoustic spectrum of the object. The instrumentation for this nondestructive evalua... View full abstract»

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  • Electromagnetic compatibility

    Publication Year: 1992, Page(s):16 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (657 KB)

    Electromagnetic compatibility (EMC) is achieved when a device functions satisfactorily in its electromagnetic environment without introducing intolerable disturbances. Electromagnetic interference (EMI) is the degradation in a device's performance due to these fields which make up the electromagnetic environment. Sources of EMI are identified, and the three common means used to control or suppress... View full abstract»

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  • Support for group work

    Publication Year: 1992, Page(s):20 - 22
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB)

    The growing use of networked computers and groupware, i.e. software that supports and augments group work, is discussed. Some groupware applications are examined. They are electronic mail, bulletin boards, real-time meetings of both the teleconferencing and casual kind, and shared cyberspace.<> View full abstract»

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  • Electromyography

    Publication Year: 1992, Page(s):25 - 28
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1094 KB)

    The use of electromyography (EMG) to determine the cause of lower back pain is examined. The source and properties of the EMG signal and its analysis are discussed. The fatigue properties of back muscles and their role in back pain are considered. A typical back analysis system is described, and some study results are presented.<> View full abstract»

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  • Data flow visual languages

    Publication Year: 1992, Page(s):30 - 33
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (513 KB)

    Current visual programming languages, which are supported by block diagrams referred to as data flow graphs, are discussed. Three systems currently available for engineers to use are examined. They are LabVIEW, for process control and instrumentation, and AVS and Khoros, for scientific data visualization.<> View full abstract»

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  • Anti-noise

    Publication Year: 1992, Page(s):36 - 40
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (986 KB)

    Broadband (turbulent) and narrowband noises are defined, and examples are given. The limitations of passive noise control techniques (good design, absorption) are noted, and active noise cancellation, using anti-noise (a copy of the noise used to cancel the original), is discussed. An active muffler system applied to an engine's exhaust is presented as an example.<> View full abstract»

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  • Operating insurance (computer system protection)

    Publication Year: 1992, Page(s):42 - 44
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (691 KB)

    The protection of small computer systems against power line disturbances is addressed. The sources of these disturbances are identified, and the consequences are described. The use of surge suppressors and uninterruptible power supplies is discussed.<> View full abstract»

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Editor-in-Chief
Sachin Seth
Texas Instruments
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