SAICSIT Digital Archive: Recent submissions

  • A survey of information authentication techniques 
    Smuts, WB (South African Computer Society (SAICSIT), 1994)
    This article provides a survey of techniques which can be used to add authenticity to electronic documents and messages.
  • 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 ...
  • Dynamic deadlock avoidance: a prototype 
    Blewett, CN; Erwin, GJ (South African Computer Society (SAICSIT), 1996)
    In this paper, we describe a prototype of an expert system software advisor for the deadlock treatment of a lock manager in a database system. The software advisor, called EAGLE (External Advisor for Granting Locks ...
  • 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 ...
  • Syntactic description of neighbourhood in quadtree 
    Tapamo, JR (South African Computer Society (SAICSIT), 2000)
    Region representation is very important in Graphics and Image Processing. This paper is concerned with a formalisation of image representation by quadtrees. Indeed an image here is a language over an alphabet of four ...
  • 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 ...
  • Multilingual training of acoustic models in automatic speech recognition 
    Nieuwoudt, C; Botha, EC (South African Computer Society (SAICSIT), 2000)
    This paper evaluates the performance of a speech recognition system using acoustic models trained on multilingual data. The reason in our case for using data from more than one language is that there may not be enough ...
  • Scalability of the RAMpage memory hierarchy 
    Machanick, P (South African Computer Society (SAICSIT), 2000)
    The RAMpage memory hierarchy is an alternative to the traditional division between cache and main memory: main memory is moved up a level and DRAM is used as a paging device. As the CPU-DRAM speed gap grows, it is expected ...
  • Image coding with fractal vector quantization 
    Cloete, E; Venter, LM (South African Computer Society (SAICSIT), 2000)
    In this paper, we address the time complexity problem associated with fractal image coding. In particular, we describe a new hybrid technique called Fractal Vector Quantization (FVQ), which takes advantage of the best ...
  • Technological experience and technophobia in South African university students 
    Clarke, MC (South African Computer Society (SAICSIT), 2000)
    In an earlier study co-ordinated by Weil and Rosen, university students in 23 countries were surveyed in order to compare their levels of technological sophistication and technophobia. The countries sampled did not include ...
  • 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 declarative framework for temporal discrete simulation 
    Abdulrab, H; Ngomo, M; Drissi-Talbi, A (South African Computer Society (SAICSIT), 2000)
    The aim of this paper is to introduce temporal processes and linear constraints on naturals for solving temporal discrete simulations problems. We first describe a new approach for solving such constraints, based on 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 ...
  • From information security baselines to information security profiles 
    Von Solms, R; Van de Haar, H (South African Computer Society (SAICSIT), 1999)
    To protect the information systems of an organization an appropriate set of security controls needs to be installed and managed properly. Many organizations that can afford it conduct either a risk analysis exercise ...
  • 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 ...
  • Some automata-theoretic properties of -NFA 
    Van Zijl, L; Van der Walt, APJ (South African Computer Society (SAICSIT), 1999)
    We prove that the shortest word accepted by an n-state intersection selective nondeterministic automaton with nonempty language can be of length O( e n log n).
  • 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 ...
  • Reconciling the needs of new information systems graduates and their employers in small, developed countries 
    Turner, R; Lowry, G (South African Computer Society (SAICSIT), 1999)
    This paper is the first of a series of studies of a research program aimed at achieving a better fit between university study and professional practise of information systems. The paper reports the results of two surveys: ...
  • 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) ...
  • A complexity metrics model for software 
    Torn, A; Andersson, T; Enholm, K (South African Computer Society (SAICSIT), 1999)
    A complexity metrics model for software is introduced. The model is defined as l( p )c( p ) = e( p ), where p is any piece of software, l( p ) its length, c( p ) an average type complexity measure independent of length, ...

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