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Browsing Quaestiones Informaticae (QI) by Title

Browsing Quaestiones Informaticae (QI) by Title

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  • A CAI model of space and time with special reference to field battles 
    Anderssen, E.C.; von Solms, S. H. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    A computer aided instruction facility is presented, in which the simulation of field battles introduces history students to the dynamic relationships between space and time in a historical perspective. Information on a ...
  • Case-Grammar Representation of Programming Languages 
    Popelas, Judy Mallino; Calingaert, Peter (Computer Society of South Africa (on behalf of SAICSIT), 1983)
    The correction of errors in programs can be based on an analysis, that subordinates syntactic relationships to functional relationships among elements of a program. For this purpose, case grammars, originally developed ...
  • A classification of partitioning rules for information system design 
    Mende, J. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    In designing a computer-based information system one can partition the transformation process in many alternative ways. To find the optimal partition, a designer needs explicit rules which predict the most successful ...
  • Common approach to some informational systems 
    Orlowska, M.E. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    In this paper we consider relationships between a complete system [6], an L-system [3], a stochastic system [13] and an N-system [8]. We introduce a notion of the induction of one system by another. We prove the important ...
  • A comparison of academic and practitioner perceptions of the changing role of the systems analyst: an empirical study 
    Crossman, T.D. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    Changes in technology introduce new job responsibilities and demand new skills profiles from personnel involved in application software development. Inability to perfonn competently within these job responsibilities can ...
  • A Comparison of Methods used to Represent Graphs on a Computer 
    Sutcliffe, Geoff (Computer Society of South Africa (on behalf of SAICSIT), 1985)
    In general graph theorists have a limited knowledge of computers and computing, and are unaware of the possible variations of representation available, and in what circumstances which representation would be better. To ...
  • Concurrency: An Easier Way to Program 
    Mueller, C.S.M. (Computer Society of South Africa (on behalf of SAICSIT), 1984)
    Why concurrency in itself should be seen as a method of programming, is discussed. Current approaches to concurrent programming are evaluated in terms of e~e qt programming. The properties required to decompose the ...
  • A Consideration of Formalisms in Computing 
    Short, R. (Computer Society of South Africa (on behalf of SAICSIT), 1985)
    Formalisms comprise the essential bricks and mortar that we need in order to construct information systems. Not surprisingly therefore the invention and refinement of formalisms has formed and continues to form a ...
  • A Context Sensitive Metalanguage for Intelligent Editors 
    Kaplan, S.M. (Computer Society of South Africa (on behalf of SAICSIT), 1984)
    The notion of and mot1vat1on for intelligent editor systems 1s introduced, spec1f1cally a language independent intelligent editor called "PASTOR" We also introduce and discuss the metalanguage used in the editor for grammar ...
  • A "cooperating expert's" framework for business expert system design 
    Finnie, G.R. (Computer Society of South Africa (on behalf of SAICSIT), 1989)
    Expert system development environments based on current language constructs such as rules and frames have been criticised for approaching the task of problem solving from too low a level of abstraction. This paper describes ...
  • A CSP Description of some Parallel Sorting Algorithms 
    Linck, M. H. (Linck, M.H. (1982) A CSP Description of some Parallel Sorting Algorithms,. Computer Society of South Africa (on behalf of SAICSIT), 1982)
    Hoare's CSP notation is used to describe 3 parallel sorting algorithms. The first algorithm uses n/2 processes working in parallel, the second uses an array of n parallel processes and the third algorithm is a parallel ...
  • A data structure for exchanging geographical information 
    Cooper, A.K. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Geographical information consists of non-spatial information (alphanumeric) and spatial information (vector and raster), the relationships between the non-spatial information and the spatial information, as well as ...
  • Data Structure Traces 
    Schach, Stephen R. (Computer Society of South Africa (on behalf of SAICSIT), 1983)
    Three levels of traces for data structures (as opposed to simple variables) are defined. A machine-code core dump is essentially a low level trace. A high level trace reflects the high level language in which the data ...
  • Data Structures for Generalized Network Algorithms 
    Currin, Desmond C. (Computer Society of South Africa (on behalf of SAICSIT), 1983)
    Generalized network problems involve the optimization of a flow through a network. In contrast to normal networks, generalized networks include multipliers which alter the flow as it passes through the arcs. This enables ...
  • Database Design: Choice of a Methodology 
    King, M. C. F.; Naude, G.; von Solms, S. H. (Computer Society of South Africa (on behalf of SAICSIT), 1979)
    Aspects are discussed of the pract.Ical applicat.Ion of recent relatlonal theory The relevant defirut.Ions, extracted from vanous papers, have been restated usmg a common notat.Ion An attempt is made to descnbe unambiguously ...
  • Decision tables as a knowledge representation formalism 
    Podevyn, D. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    A knowledge engineering tool called GESS (General Expert System Shell) is presented which is used for building different types of expert systems. Knowledge representation is based on direct extensions of the idea of decision ...
  • The Design and Microprogrammed Implementation of a Structured Language Machine 
    Finnie, G.R. (Computer Society of South Africa (on behalf of SAICSIT), 1982)
    A computer architecture is described which is suitable for the execution of structured languages (such as Pascal or Algol) at the intermediate language level. The design is heavily stack oriented and consists basically ...
  • The Design Objectives of Quadlisp 
    Postma, Stef W. (Computer Society of South Africa (on behalf of SAICSIT), 1982)
    Quadlisp is a symbol manipulation language for sophisticated users, and it is an improper extension of Lisp 1.5 (in the same sense that Pascal is an improper extension of Algol). Elements from Lisp thus are basic to the ...
  • Design Principles of the Language BPL 
    Williams, M.H. (Computer Society of South Africa (on behalf of SAICSIT), 1979)
    BASIC and Pascal are two rather different programming languages, both of which have proved to be very popular. A new language BPL has been designed as an interactive programming language based on these two languages, ...
  • A detailed look at operating system processes 
    Venter, B.H. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    An operating system provides, among other things, an operational definition of a process. The concept of a process is one of the fundamental concepts of Computer Science, and the designer of an operating system must strive ...

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