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Browsing Quaestiones Informaticae (QI) by Title

Browsing Quaestiones Informaticae (QI) by Title

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  • Text Compression Techniques 
    Radue, J. E. (Computer Society of South Africa (on behalf of SAICSIT), 1979)
    The benefits associated with text compression include more efficient use of peripheral devices. faster information transfer rates and, in some cases, improved sorting speeds through the use of shorter sort keys. However. ...
  • Thirty Years of Information Engines 
    Scarrott, G.G. (Computer Society of South Africa (on behalf of SAICSIT), 1980)
    The era ofinformation engineering was initiated some thirty years' ago by the demonstration of the first stored program electronic computer. At that time there was intense innovative excitement among the pioneers which, ...
  • Three packaging rules for information system design 
    Mende, J. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    After identifying the processing functions required in a computer based information system, the designer needs to combine them into an optimal set of load units. Some "packaging" arrangements yield a better system ...
  • Tools for Creating Tools: Programming in Artificial Intelligence 
    Machanick, Philip (Computer Society of South Africa (on behalf of SAICSIT), 1985)
    After a brief look at how the notion of the stored program is applied by programmers in the area of Artificial Intelligence (Al), we shall look at a specific Al tool: a production svstem. The discussion is at a ...
  • Traversable trees and forests 
    Postma, Stef W. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Two topics are studied, related and generalised in this paper - the Knuth transform of an arbitrary tree to a binary tree, and Pfaltz' s definition of a data structure as a graph with assignments. Trees are defined in ...
  • The use of colour in raster graphics 
    Smit, P.J. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Colour computer graphics covers a wide field of applications such as games, computer aided-design, image processing and digital terrain modelling. The traditional way of using colour in raster graphics systems, the RGB ...
  • User attitudes main reason why information systems fail 
    Bruwer, P.J.S. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    Some factors which may influence the attitude of the user toward a computerized system are investigated in this article. The research was done in South Africa involving the users of computer-based systems in two organizations. ...
  • Using NLC-Grammars to Formalise the Take/Grant and Send/Receive Security Models 
    De Villiers, D.P.; Von Solms, S.H. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    In this paper the Send/Receive and Take/Grant logical security models are formalised using results from formal language theory. By using the graph rewriting facilities of NLC-grammars, and by extending these facilities ...
  • Very High Speed Graphics Work-Station 
    Jablonski, J.; Dijkman, J.H. (Computer Society of South Africa (on behalf of SAICSIT), 1984)
    The design of a high speed graphics workstation 1s presented A spec1f1caly designed Graphics System Interface com bines standard computer peripherals to produce a soph1st1cated man machine workstation A review 1s given ...
  • A Virtual Multiprocessor Computer Design 
    Turton, Trevor (Computer Society of South Africa (on behalf of SAICSIT), 1984)
    This paper describes computer design which 'would achieve a high instruction throughput rate on a relatively modest amount of hardware. It is based on multiprogramming the CPU at a sub-instruction level. The design will ...
  • Ways of Assessing Programming Skills 
    Bishop, J.M. (Computer Society of South Africa (on behalf of SAICSIT), 1986)
    The programming skills taught in first year computer science courses are more difficult to assess than the skills in older science courses because of the very large numbers of students involved coupled with material ...
  • What's wrong with CP/M? 
    Byron-Moore, S.P. (Computer Society of South Africa (on behalf of SAICSIT), 1986)
    Trends in operating systems are examined in the light of advances in computer hardware. Consideration is given to the desirability of a good, up-to-date single-user operating system. The specification and implementation ...

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