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Browsing South African Computer Journal 1999(24) by Issue Date

Browsing South African Computer Journal 1999(24) by Issue Date

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  • Critical success factors for the implementation of DSS at a selection of organisations in Kwazulu/Natal, South Africa 
    Averweg, URF Erwin, GJ (South African Computer Society (SAICSIT), 1999)
    Decision Support Systems (DSS) are specially developed for supporting the solution of a non-structured management problem for improved decision-making. DSS utilise data, provide easy user interfaces and allow for the ...
  • Generalised unification of finite temporal logic formulas 
    Hazelhurst, S (South African Computer Society (SAICSIT), 1999)
    Given two temporal logic formulas, g and h, we wish to know whether there is a modification, m, we can make to h so that g ==> m( h). This problem has important applications in hardware verification, where finding such ...
  • Shortest delay scheduling algorithm for lossless quality transmission of stored VBR video under limited bandwidth 
    Li, F Liu, Y Lee, JY Ahmad, I (South African Computer Society (SAICSIT), 1999)
    In this paper, we propose scheduling algorithms for call admission control servers. For each requested video, the server sends it according to its smoothed profile aims at maximizing resource utilization and ease of network ...
  • Introducing research methods to Computer Science honours students 
    Galpin, V Hazelhurst, S Mueller, C Sanders, I (South African Computer Society (SAICSIT), 1999)
    Research skills are important for any academic and can be of great benefit to any professional person. These skills are, however, difficult to teach and to learn. In the Department of Computer Science at the University ...
  • Enhancing the predictability of two popular software reliability growth models 
    Keiller, PA Mazzuchi, TA (South African Computer Society (SAICSIT), 1999)
    In this paper, enhancement of the performance of both the Musa-Okumoto and the Goel-Okumoto Software Reliability Growth models are investigated using various smoothing techniques. The method of parameter estimation for the ...
  • Statistical analysis of an automated computer architecture learning environment 
    Waldron, JT Horgan, J Keogh, G (South African Computer Society (SAICSIT), 1999)
    The level of programming skill achieved by a method of learning introductory computer architecture with a strong emphasis on assembly language programming as part of a Graduate Diploma in Information Technology in the ...
  • A conceptual design for high-volume data processing of warehouse database into multidimensional database 
    Trakulsuk, P Avatchanakorn, V (South African Computer Society (SAICSIT), 1999)
    This paper presents a conceptual model of analyzing huge amount of information from a data warehouse into Multidimensional Database (MDDB) using multidimensional data (MDD)model. The major advantages of this model are: 1) ...
  • Formal verification with natural language specifications: guidelines, experiments and lessons so far 
    Holt, A (South African Computer Society (SAICSIT), 1999)
    The industrial take-up of formal verification techniques remains limited. Allowing specifications to be expressed in natural language (perhaps augmented with diagrams) offers the prospect of increasing the usability of ...
  • A Java client/server system for accessing arbitrary CANopen fieldbus devices via the Internet 
    Buhler, D Nusser, G Gruhler, G Kuchlin, W (South African Computer Society (SAICSIT), 1999)
    This paper describes the Java CAN API a portable and extensible application interface to arbitrary CANopen fieldbus devices. This API forms the basis for the implementation of JRCC (Java Remote CAN Control), a tool which ...
  • Harmonizing global internet tax: a collaborative extranet model 
    Lawrence, E Garner, B (South African Computer Society (SAICSIT), 1999)
    The advent of Internet Commerce represents a significant threat to taxation revenue collection for governments throughout the world. Governments cannot prevent the creative and innovative commercial use of the Internet in ...
  • Approaches to video transmission over GSM networks 
    Du, B Maeder, A (South African Computer Society (SAICSIT), 1999)
    Real-time video delivery adds an aspect of reality when used in conjunction with other computer and human communi­cations facilities (eg in videophone or videoconferencing applications). However, the complex and time-critical ...
  • A generic modelling framework for interactive authoring support environments 
    Kotze, P (South African Computer Society (SAICSIT), 1999)
    Existing modelling frameworks for the design of interactive systems emphasise the relationship between the system's in­ternal state and the rendering of this state at the user interface. Modern programming and multimedia ...
  • The role of experience in user perceptions of information technology: an empirical examination 
    Handzic, M Low, G (South African Computer Society (SAICSIT), 1999)
    This paper reports the results of an empirical examination of the effects of experience in using a multifunctional information technology on users' perceptions of its usefulness and ease of use in a university task context ...
  • Computer programming and learning to write 
    Barrow, J (South African Computer Society (SAICSIT), 1999)
    Programming is often seen in terms of mathematical models. An additional perspective, that of programming as a means of communication between the programmer and the computer, can also be useful, particularly in teaching ...
  • Distributed operating systems: a study in applicability 
    Prange, J Bishop, J (South African Computer Society (SAICSIT), 1999)
    This study will attempt to show the path of research and development of a huge and currently implemented SCADA (Super­visory Control and Data Acquisition) system product. The designers and their managers have identified ...
  • Improving object oriented analysis by explicit change analysis 
    Yu, L Khong, SC Xun, Y Yuan, M (South African Computer Society (SAICSIT), 1999)
    Changeability is one of the major concerns in software development. OO (Object-Oriented) technology itself is not enough to solve this problem, i.e. software systems cannot have enough changeability by just using any ...
  • Visualising eventuality structure 
    Rock, ST (South African Computer Society (SAICSIT), 1999)
    This paper describes the use of pictorial representations in showing the understanding of natural language that is about multiple or extended events. The focus is on the structure of such eventualities, and depiction of ...
  • Active learning: Issues and challenges for information systems and technology 
    Quilling, RD Erwin, GJ Petkova, O (South African Computer Society (SAICSIT), 1999)
    Changes following South Africa's first democratic election when Nelson Mandela was elected President, have stimulated reviews of many economic, political and social structures including those in national education. One of ...
  • The CILT multi-agent learning system 
    Viktor, HL (South African Computer Society (SAICSIT), 1999)
    A multi-agent learning system consists of two or more learners or learning agents that co-exist in a learning environment. The learners have the ability to learn together, thus utilizing one another's strengths and ...
  • Software chroma keying in an immersive virtual environment 
    Van den Bergh, F Lalioti, V (South African Computer Society (SAICSIT), 1999)
    This paper presents a very fast software chroma keying algorithm, requiring at most five integer operations per pixel. An improvement of more than 300% in performance over HLS based algorithms was achieved. The algorithm ...

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