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IEE Review

Issue 4 • Date 15 July 1993

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Displaying Results 1 - 5 of 5
  • Power and politics: electricity trade in Eastern Europe

    Publication Year: 1993, Page(s):151 - 154
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    Changes in Europe have opened the way for greatly increased trade in electricity between Eastern and Western Europe. The author looks at the infrastructure in place in Europe. In particular the author discusses the electricity trading groups and east-west exchanges. The nations of central Europe are in a strategic location regarding power exchange. Their electricity systems are briefly discussed. ... View full abstract»

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  • Controlling Le Shuttle: signalling for the Channel Tunnel

    Publication Year: 1993, Page(s):156 - 157
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (209 KB)

    Railway signalling systems have three main functions: train separation; conflict prevention; and monitoring and control. To these three fundamental functions, most modern systems add a fourth, known as automatic train protection (ATP). This is a system on board the train, which monitors the train speed and applies the brake automatically if the train exceeds the safe speed, which is determined by ... View full abstract»

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  • Breaking step: the return of asynchronous logic

    Publication Year: 1993, Page(s):159 - 162
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (427 KB)

    Virtually all digital design is based on a synchronous approach. However, there are signs that it is beginning to hit some fundamental limitations. These limitations are described by the author. Asynchronous design as a means to overcome these limitations is then discussed. The way in which asynchronous circuits operate is discussed. The Amulet project at Manchester University, which adopted the m... View full abstract»

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  • The seeing computer

    Publication Year: 1993, Page(s):163 - 166
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (322 KB)

    The author describes the main system elements of a machine vision system. These are: an imaging transducer, an illumination subsystem, the frame grabber, the control processor and the software. The applications of machine vision in industry and medicine are described.<> View full abstract»

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  • The M209 cipher machine: a war of words

    Publication Year: 1993, Page(s):173 - 175
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (301 KB)

    The author describes the construction and operation of the M209 cipher machine as used by the US Army in the Second World War. It was one of several versions of the Hagelin machine, named after its inventor, Boris Hagelin, which was produced in Sweden. The author discusses the internal configuration, encipherment, overlapping, security, and cracking the code. The M209 remained in use until the mid... View full abstract»

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