Quaestiones Informaticae (QI): Recent submissions

  • Quaestiones Informaticae Table of Contents 
    Unknown author (2019)
  • An Interactive Graphical Array Trace 
    Schach, Stephen R. (Computer Society of South Africa (on behalf of SAICSIT), 1982)
    data structure and its computer implementation. However, in the course of debugging a program written in a high-level language, the user is sometimes forced to try to understand the low-level implementation of his data ...
  • Reflections on the nature and future of computer science in Southern Africa 
    Venter, BH (Computer Society of South Africa (on behalf of SAICSIT), 1989)
    Computer Science is a relatively recent scientific discipline. It has seen rapid growth and even more rapid change. Not surprisingly there is constant controversy among computer scientists about the nature of the ...
  • Software design to meet third world requirements: an experimental software engineering approach 
    Machanick, Philip (Computer Society of South Africa (on behalf of SAICSIT), 1989)
    Appropriate technology refers to technology appropriate for use in less developed parts of the world, especially the Third World; this paper raises some problems in adapting a definition of appropriate technology to ...
  • An approach to defining abstractions, refinements and enrichments 
    Kourie, D.G. (Computer Society of South Africa (on behalf of SAICSIT), 1989)
    A proposal for defining abstractions and refinements is given in terms of three-valued logic applied to a domain of discourse consisting of a property and an entity set. Definitions for several related concepts flow ...
  • 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 ...
  • The application of scientific method to information systems analysis 
    Atkinson, C.R.; Lay, P.M.Q. (Computer Society of South Africa (on behalf of SAICSIT), 1989)
    17zis paper addresses the challenging question of the rigour of the systems analysis process. First of all it discusses the nature of analysis, concluding that, contradictory to cu"ent opinion, it can best be described ...
  • Die meting van sukses van naampassingsalgoritmes in 'n genealogiese databasis 
    De Kock, G de V (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Norms to measure the success of surname matching algorithms for use in a South African Genealogical Database are proposed. Surnames in the database can be grouped in equivalence classes. These algorithms are taken from ...
  • Finding a cheap matching 
    Smith, T.H.C. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    We propose an edge exchange algorithm/or finding a cheaper 1-matchingfrom a given ]-matching as well as a heuristic algorithm/or constructing a relatively cheap ]-matching from the optimal solution of a relaxation of the ...
  • Learning the first step in requirements specification 
    Short, R.M.C. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Learning about the domain into which an information system will fit is an essential part of the system development process. In this paper it is argued that the first stage of the development process should be learning ...
  • The parallel conditional 
    Postma, Stef W.; Philips, N.C.K. (S W Postma and N C K Phillips (1988) The parallel conditional. Computer Society of South Africa (on behalf of SAICSIT), 1988)
    The parallel conditional is a new but natural programming language construct. It is particularly suited to evaluation on parallel maclunes and generalizes other well known conditionals.
  • A proposed computer network for researchers 
    McDonald, T (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    In contrast to other countries, South Africa has sadly lacked a computer network for researchers. This paper starts with previous efforts to establish a national network for researchers and gives possible reasons for ...
  • Experiences in CSP trace generation 
    Kourie, D.G.; Van den Heever, R.J. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Experiences and insights gained from implementing and using a Prolog trace generator for CSP specifications are discussed. The use of Prolog as an implementation language is evaluated. The value of trace generation as ...
  • Ranking information system problems in a user environment 
    Bruwer, P.J.S. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    In a previous research project (Bruwer [ 1 J) a methodology to identify information system problems from a user point of view, was presented. This methodology was also illustrated by means of empirical data collected ...
  • Frame clipping of polygons 
    Anderssen, E.C.; Von Solms, S.H. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    A polygon clipping algorithm is presented for the clipping of closed geographical areas such as dams or forests, against a surrounding rectangular windowframe. The algorithm employs a line clipping procedure which divides ...
  • Rekenaar spraaksintese: die omskakeling van teks na klank - 'n prestasiemeting 
    Wagener, M.J.; De Kock, G de V (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Verslag word gelewer oor 'n prestasiemeting van 'n stel letter-na-klank reels vir die omskakeling van Afrikaanse teks na foneme. Die prestasie van die stel reels word getoets deur gebruik te maak van 'n verteenwoordigende ...
  • Modelling distributed database concurrency control overheads 
    Rennhackkamp, M.H.; Von Solms, S.H. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    Numerous concurrency control methods have been proposed for distributed databases. Various crz·teria are used to compare these methods. The comparisons range from qualitative overviews through quantitative analyses to ...
  • 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 ...
  • On syntax and semantics related to incomplete information databases 
    Orlowska, M.E. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    We propose a mathematical model of a database with incomplete information, which we call the N-system. Basically speaking, such a system stores information concerning properties of some objects. The information may be ...
  • 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 ...

Search UnisaIR


Browse

My Account