Institutional Repository

Browsing South African Computer Journal (SACJ) by Title

Browsing South African Computer Journal (SACJ) by Title

Sort by: Order: Results:

  • Network partitions in distributed databases 
    Viktor, HL; Rennhackkamp, MH (South African Computer Society (SAICSIT), 1992)
    The technology of distributed databases is based on two other technologies which have developed a solid foundation: computer networks and centralized databases. A distributed database designer should therefore address ...
  • A new algorithm for finding an upper bound of the genus of a graph 
    Carson, DI; Oellermann, OR (South African Computer Society (SAICSIT), 1992)
    In this paper we discuss the problem of finding an upper bound on the genus of a graph. This problem has applications to circuit layouts. An electronic circuit may be modelled by a graph. By punching holes into the circuit ...
  • A new approach for program integration 
    Bouras, Z-E; Khammaci, T; Ghoul, S (South African Computer Society (SAICSIT), 2000)
    Program integration combines independent enhancements to some version of a software system into a new system that includes the enhancements and the old system. Current approaches use the slice concept. The latter is a ...
  • A new framework for information security to avoid information anarchy 
    Parker, DB (South African Computer Society (SAICSIT), 1996)
    It is reasoned that to preserve the three traditional elements of information security, confidentiality, integrity and availabil­ity, it is not sufficient to fully protect information. Three new elements are introduced: ...
  • The new IS'95 curriculum 
    Smith, DC (South African Computer Society (SAICSIT), 1996)
    The recent acceptance of South Africa as a world player and the government's reconstruction and development programme (RDP) have created new challenges and opportunities for business and universities. The Information Systems ...
  • The NRDNIX distributed database management system 
    Rennhackkamp, MH (South African Institute of Computer Scientists and Information Technologists, 1990)
    A distributed database management system must facilitate integrated processing of data which is physically distributed over a network of node computers, while providing locality transparency. The NRDNIX prototype has ...
  • Object oriented programs and a stack based virtual machine 
    Waldron, JT (South African Computer Society (SAICSIT), 2000)
    Dynamic quantitative measurements of Bytecode and Stack Frame Usage by Eiffel and Java Programs in the Java Virtual Machine are made. Two Eiffel programs are dynamically analysed while executing on the JVM, and the results ...
  • An object-oriented framework for rapid client-side integration of information management systems 
    Schimkat, RD; Kuchlin, W; Krautter, R (South African Computer Society (SAICSIT), 1999)
    Reuse of software components offers the potential for significant savings in application development costs and time. This paper provides a characterization of reuse at different levels of client-based software in distributed ...
  • The object-oriented paradigm: Uncertainties and insecurities 
    Schach, Stephen R. (South African Computer Society (SAICSIT), 1994)
    The object-oriented paradigm is widely promoted as the optimal way to develop software. However, there is as yet no experimental evidence to back that assertion, and it is extremely unlikely that such evidence could be ...
  • OCTOLISP: An experiment with data structures 
    Dempster, Robert (South African Institute of Computer Scientists and Information Technologists, 1990)
    OCTOLISP is a functional programming language which provides the programmer with a number of explicit data structures, such as lists, stacks, vectors, sets, trees and forests. Each of these data structures also has a ...
  • On the generation of permutations 
    Naccache de Paz, D (South African Institute of Computer Scientists and Information Technologists, 1990)
    A new incremental algorithm for generating permutations on 1,2,..n (hereafter called "arrangements') is presented. The scheme generates arrangement k +1 by reversing a certain prefix of its predecessor and linking it to ...
  • On using the situation calculus dynamically rather than temporally 
    Labuschagne, W.A.; Miller, MG (South African Computer Society (SAICSIT), 1994)
    Yet another axiomatisation of the Yale shooting scenario is provided. The point illustrated by the axiomatisation is that, when using the situation calculus to represent knowledge about a dynamic system in which actions ...
  • Opening address: Vth SA Computer Symposium 
    Viljoen, HC (South African Institute of Computer Scientists and Information Technologists, 1990)
    You may know that I am sitting on two chairs at the present moment: one, at the University of Stellenbosch in the Chair of Electronic Engineering as Dean of Engineering; the other at the SABC as chairman of the Board of ...
  • Organizational computing technologies for supporting organizational activities 
    Lochovsky, FH (South African Computer Society (SAICSIT), 1994)
    Technologies for supporting organizational activities are becoming increasingly important as a means for organizations to achieve their business goals. Such technologies allow organizations to model, execute, and control ...
  • Orthogonal axial line placement in chains and trees of orthogonal rectangles 
    Sanders, ID; Watts, DC; Hall, AD (South African Computer Society (SAICSIT), 2000)
    Previous research has shown that the orthogonal axial line placement problem for orthogonal rectangles is NP-complete in general but also that there are restrictions of the problem for which polynomial time solutions can ...
  • Orthogonal ray guarding of adjacencies between orthogonal rectangles 
    Sanders, I; Lubinsky, D; Sears, M; Kourie, D (South African Computer Society (SAICSIT), 1999)
    Guarding and covering problems have great importance in Computational Geometry. In this article the notion of' a ray guard, a guard that can only 'see' along a single ray, is introduced. The problem of siting the fewest ...
  • Parallel distributed objects' structure and their synchronization in an APPC environment 
    Kisimov, V; Da Silva, I (South African Computer Society (SAICSIT), 1995)
    Over a period of a few hours, every computer participating in a distributed system has many unused resources. If these resources can be combined, a large amount of computational power can be generated. This paper offers ...
  • Parallel execution strategies for conventional logic problems: A review 
    Lutu, PEN (South African Computer Society (SAICSIT), 1994)
    Parallel execution strategies/or Prolog programs are reviewed. Three models, AOPM, APPNet and RAP are discussed in some detail. The AOPM and the APPNet are AND-OR parallel execution models and represent the two ends of the ...
  • A performance analyser for the numerical solution of general Markov chains 
    Knottenbelt, W; Kritzinger, P (South African Computer Society (SAICSIT), 1998)
    Despite many advances in queueing theory and other modelling paradigms, one persistenty discovers real life stochastic systems which do not yield neatly to existing methods for their performance analysis. In most such ...
  • PEST - A microcomputer Pascal base expert system shell 
    Sartori-Angus, AG; Neville, R (South African Institute of Computer Scientists and Information Technologists, 1991)
    The PEST System is a totally interactive, forward chaining, rule-based expert system shell. It was primarily, though not exclusively, designed for the development of scientifically related expert systems in Pascal, involving ...

Search UnisaIR


Browse

My Account