SAICSIT Digital Archive: Recent submissions

  • Returns on the Stock Exchange 
    Kruger, JW (2000)
    The McGreggor database supplies the accounting information of companies listed on the Johannesburg stock exchange. These attributes are not significantly correlated to the Return. The Pearl's algorithm in Bayesian belief ...
  • Error analysis in selected medical devices and information systems 
    Randiki, E (1998)
    The purpose of this paper is to identify and analyse error in selected medical devices: the Datex cardiocap and the capnomac Ultima II. These are both anaesthetic machines used to monitor patients in theatre. A secondary ...
  • A risk model to allocate resources to different computerised systems 
    Kruger, HA; Hattingh, JM (1997)
    The majority of large organisations operate and maintain significant portfolios of computerised systems. All Information Systems (IS) managers are increasingly faced with the task of doing more with less. To cope with ...
  • Model checking software with symbolic trajectory evaluation 
    Hazelhurst, S (1997)
    Traditional methods of testing computer systems, although valuable, are inadequate for ensuring sufficiently high quality in systems in which a high degree of reliability must be placed. Formal methods for development of ...
  • An overview of the Internet services available in South Africa 
    Radovanovic, A; Venter, DM (1995)
    South African networking history started in the mid 1980's. Within less than ten years, the country became the 15-th fastest growing network within the lnternet community. Today, the South African network offers a variety ...
  • Rank-one update of Cholesky factorization 
    Ntlatlapa, N (1995)
    Symmetric positive definite matrices appear in most methods for Unconstrained Optimization. The method widely adopted for factoring these matrices is Cholesky Factorization. Furthermore, in Quassi-Newton methods for ...
  • The design of a 2D non-linear filter for digital image processing 
    Cloete, E (1995)
    A 1 D non-linear filter which is based on 'max-min' selectors is extended for use in 2 0 applications. The objective of this research is to remove impulsive noise without unduly changing original, valid data. Some examples ...
  • Higraphs: an overview of theory and application 
    Hillebrand, G (1995)
    This paper presents an overview of the established concepts of David Harel' s higraphs, to increase their visibility. Higraphs are a union of extended graph and extended set theory which allows the understandable definition ...
  • Effectively exploiting server log information for large scale web sites 
    Wong, B; Marsden, G (2001)
    With the continuing growth of the Internet, an increasing number of organisations are incorporating the Web into their business activities. The appeal of a site to users in terms of both attractiveness and usability ...
  • A pattern architecture: using patterns to define an overall systems architecture 
    Van Zyl, J; Walker, AJ (2001)
    The notion of patterns has been used in many different disciplines, and the software industry is no exception. There are many books written, academic research done and practical examples available of where patterns have ...
  • The specification of a multi-level marketing business 
    Van der Poll, JA; Kotze, P (2001)
    A formal specification of a multi-level marketing (MLM} business is presented. Specifying a MLM business boils down to specifying properties of and operations on mathematical forests and trees. The usefulness of the ...
  • Lessons learnt from an action research project running groupwork activities on the Internet: lecturers' experiences 
    Thomas, TA; Brown, S (2001)
    Group activities are important for students in order to develop the skills they will need for working with other people when they get into industry. The Internet offers an exciting environment for students to practise these ...
  • The effect of colour, luminance, contrast, icons, forgiveness and closure on ATM interface efficiency 
    Stander, A; Van Zee, P; Wang, Y-J (2001)
    Automatic teller machines (ATM) are an intermediate stage in the progression of banking technology. This intermediate stage is expected to remain until user perceptions of electronic banking have improved. ATM transaction ...
  • Information security development trends 
    Von Solms, E; Eloff, JHP (2001)
    Information is a very valuable resource and must be protected against harmful attacks from inside as well as outside the organization. As a resource, information is the lifeline of many organizations and is therefore vital ...
  • Creating high performance IS teams 
    Smith, DC; Becker, M; Burns-Howell, J; Kyriakides, J (2001)
    The use of teams within organisations is becoming more prevalent as teams have been identified as an efficient work unit of human capital. This research identified 17 team effectiveness characteristics and, using a sample ...
  • Towards teaching computer ethics 
    De Ridder, C; Pretorius, L; Barnard, A (2001)
    With the advent of the lnformation Age and global connectivity, the ethical use of Information and Communication Technologies (/CI) has become essential. As the drive towards the establishment of a so-called IT profession ...
  • JavaCloak - considering the limitations of proxies for facilitating Java runtime specialisation 
    Renaud, K (2001)
    This paper discusses issues pertaining to mechanisms which can be used to change the behaviour of Java classes at runtime. The proxy mechanism will be compared to and contrasted with other standard approaches to this ...
  • Managing the operational implications of Information Systems 
    Potgieter, BC (2001)
    Computer scientists and information technologists are morally obliged to study the social impact of their technologies. They must also consider the results of the non-positivistic · approaches that are generally avoided ...
  • Hierarchical level of detail optimization for constant frame rate rendering of radiosity scenes 
    Nirenstein, S; Blake, E; Winberg, S; Mason, A (2001)
    The predictive hierarchical level of detail optimization algorithm of Mason and Blake is experimentally evaluated in the form of a practical application to hierarchical radiosity. In a novel approach the recursively ...
  • The influence of facilitation in a group decision support systems environment 
    Nepal, T; Petkov, D (2001)
    Organisations today face many issues that are complex and ill structured. The complexity of these issues does not lend themselves to structuring and formulation by quantitative models, or simple intuitive problem solving. ...

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