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Browsing South African Computer Journal 1991(4) by Type "Article"

Browsing South African Computer Journal 1991(4) by Type "Article"

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  • An ADA compatible specification language 
    Bosua, R; Du Plessis, A.L (South African Institute of Computer Scientists and Information Technologists, 1991)
    Specification languages to be used in conjunction with Ada as the implementation language have been proposed in the literature. Simultaneously, methods for the development of real-time software systems have been introduced, ...
  • An analysis of the usage of systems development methods in South Africa 
    Erlank, S; Pelteret, D; Meskin, M (South African Institute of Computer Scientists and Information Technologists, 1991)
    The systems development process is commonly described in terms of a System Development Life Cycle (SDLC). There is a wide range of tools and techniques available to the system developer, and these are typically used for ...
  • Automatic vectorization 
    Tidwell, LD; Schach, Stephen R. (South African Institute of Computer Scientists and Information Technologists, 1991)
    It is becoming increasingly difficult for researchers with little or no formal computer science background to make effective use of supercomputers and other vector machines in their own fields of research. Automatic ...
  • A causal analysis of job turnover among systems analysts 
    Smith, DC; Hansen, AL; Oosthuizen, NC (South African Institute of Computer Scientists and Information Technologists, 1991)
    Staff Shortages in the Information Systems industry are a continuing problem. Job turnover of IS staff contributes to this shortage and is particularly high in South Africa. This high turnover is often attributed to ...
  • CID3: an extension of ID3 for attributes with ordered domains 
    Cloete, I; Theron, H (South African Institute of Computer Scientists and Information Technologists, 1991)
    Quinlan's ID3 is a popular and efficient algorithm for inducing decision trees from concept examples, where the examples are presented as vectors of attribute-value pairs. If some attributes have integer or real domains ...
  • Database consistency under UNIX 
    Viktor, HL; Rennhackkamp, MH (South African Institute of Computer Scientists and Information Technologists, 1991)
    A recovery technique, to facilitate the recovery from system failures should ensure a consistent database state at all times. The UNIX write system call uses a delayed-write policy. Data blocks are kept in a buffer cache ...
  • Hypertext for browsing in computer aided learning 
    Barrow, J (South African Institute of Computer Scientists and Information Technologists, 1991)
    Hypertext is presented as a database accessing mechanism well-suited to computer aided learning applications. On the basis of informal experiments with prototype software, some benefits of structured hypertext are explored. ...
  • An interrupt driven paradigm of concurrent programming 
    Clayton, Peter G. (South African Institute of Computer Scientists and Information Technologists, 1991)
    This paper introduces a class of concurrent programming construct based on an interrupt driven paradigm. This programming model is designed to simplify the application of conventional imperative programming techniques ...
  • Knowledge-based selection and combination of forecasting methods 
    Finnie, G.R. (South African Institute of Computer Scientists and Information Technologists, 1991)
    Forecasting techniques are used extensively in a variety of business (and other) applications for the analysis and prediction of various factors of interest e.g. future market demand for a specific product. However, the ...
  • The universal relation as a database interface 
    Philips, M.J.; Berman, Sonia (South African Institute of Computer Scientists and Information Technologists, 1991)
    The universal relation is a way of overcoming users' prime database access difficulty, namely navigation through database structures. As a result there is reduced user involvement with the underlying logical database ...

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