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Computing & Control Engineering Journal

Issue 3 • Date June 1995

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Displaying Results 1 - 6 of 6
  • The organisational cultural aspects that influence enterprise modelling

    Publication Year: 1995 , Page(s): 145 - 151
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (535 KB)  

    The cultural aspects of any organisation influence the way in which that organisation operates and are therefore an underlying factor in any enterprise modelling programme. The predominant characteristics of culture are behaviour and control, which need to be evaluated on an organisation-by-organisation basis before looking at any models.<> View full abstract»

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  • Parametric identification of transfer functions from frequency response data

    Publication Year: 1995 , Page(s): 137 - 144
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (532 KB)  

    The problem of parametric identification is addressed using a cost function that weights the difference between the Bode diagrams of a model and its data. This article presents a MATLAB program for parametric estimation (AFT=Ajustamiento de Funcions de Transferencia) that includes single rules for the estimation of parameters from low- and high-frequency response data. The rest of the parameters are computed using an adequate optimisation technique for the problem. In addition, the article develops a heuristic identification method based on the experience in using AFT. Finally, a practical example is given.<> View full abstract»

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  • From BSP to a virtual von Neumann machine

    Publication Year: 1995 , Page(s): 131 - 136
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (503 KB)  

    The BSP (bulk synchronous parallel) architecture incorporates a scalable and transparent communication model. The task-level synchronisation mechanism of the machine, however, is not transparent to the user and can be inefficient when applied to the co-ordination of irregular parallelism. This article presents a discussion of an alternative memory-level scheme which offers the prospect of achieving both efficient and transparent synchronisation. The scheme, based on a discrete-event simulation paradigm, supports a sequential style of programming and, coupled with the BSP communication model, leads to the emergence of a virtual von Neumann parallel computer.<> View full abstract»

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  • Hypermedia as a tool (for CAD support)

    Publication Year: 1995 , Page(s): 123 - 130
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (569 KB)  

    Describes the use of hypermedia as a tool with application to the development of a design support system for externally pressurised journal bearings. The design support system was developed using a method which integrates hypermedia, artificial intelligence and intelligent database technologies together with conventional bearing design techniques. The integration of these technologies makes it possible for the system user to rapidly retrieve design information, efficiently use the bearing expertise embedded in the system, and achieve an optimal bearing design, taking into account both numerical and qualitative issues. The system was mainly implemented in HyperCard on a Macintosh computer. With this system, an appropriate externally pressurised journal bearing design can readily be achieved. The system can also be used as a knowledge bank for educational purposes.<> View full abstract»

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  • High-resolution noise-rejecting ADC

    Publication Year: 1995 , Page(s): 113 - 119
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (437 KB)  

    A design is presented in which a 24-bit sigma-delta ADC (analogue-digital converter) is combined with an Intel 8032 supervising microcontroller and a tuned zero-crossing detector to give a relatively simple and economical circuit that adapts to local line supply frequencies to maintain very high levels (>150 dB) of interference rejection. The design is particularly applicable to industrial sensors, including thermocouples, load cells, ion-selective and pH electrodes, and chromatographic detectors.<> View full abstract»

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  • The object revolution. How COM technology is changing the way we do business

    Publication Year: 1995 , Page(s): 108 - 112
    Cited by:  Patents (5)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (401 KB)  

    Today, advances in personal computing are helping corporations compete in a dynamic, global economy. Businesses, however, need new ways to deliver information systems in a faster, more cost-effective manner. Object technology, in the form of COM (the Common Object Model or Component Object Model), can help businesses meet these needs. This article presents GDES (General Data Extract Service) for client/server computing based on OLE (Object Linking and Embedding) and ObjectBroker. GDES is a huge step forward in the Union Bank of Switzerland's (UBS's) client/server computing strategy. It serves as a blueprint for future UBS applications where information is stored on a variety of dissimilar computers and databases.<> View full abstract»

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Aims & Scope

Published from 2003-2007, Computing and Control Engineering was concerned with computing, communications, control and instrumentation.

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