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Browsing 2001 National Research and Development Conference by Issue Date

Browsing 2001 National Research and Development Conference by Issue Date

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  • Ubiquitous computing and cellular handset interfaces - are menus the best way forward? 
    Marsden, G; Jones, M (2001)
    Embedded interactive computer systems, such as those found in cellular handsets, can be hard to use. The combination of small form factor - limited input and output potential - and an increasing feature set, result in ...
  • Towards a conceptual UML model for tracking a learner's progress in an outcomes-based environment 
    Harmse, R; Thomas, T (2001)
    The arrival of outcomes-based education (OBE) in South African means that we have to change the way in which we assess our learners. Coupled with this change comes a move to larger classes where individual assessment has ...
  • Jiminy: helping users to remember their passwords 
    Renaud, K; Smith, E (2001)
    This paper presents a novel approach to a familiar problem - that of helping users to choose better passwords, and to remember them. User identification and authentication is an essential aspect of our technologically ...
  • The use of technology to support group decision-making in South Africa 
    Nash, JM; Gwilt, D; Ludwig, A; Shaw, K (2001)
    This research provides some qualitative insights into the prevalence and use of technologies to support decision-making in South Africa. The paper focuses on two hypotheses: firstly, that decision support technology is not ...
  • Model-based segmentation of CT images 
    Marte, O-C; Marais, P (2001)
    This paper presents preliminary work on the segmentation of Computed Tomography data using a model-based approach. Conventional image processing of CT data is aimed at the production of simple iso-surfaces far surgical ...
  • Further cache and TLB investigation of the RAMpage memory hierarchy 
    Machanick, P; Patel, Z (2001)
    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. Earlier RAMpage work has shown that the RAMpage ...
  • Real-time performance of OPC in a feedback system 
    Kew, SJ; Dwolatzky, B (2001)
    "OPC" is an important new specification designed to solve interoperability problems in the process control environment. It is based on Microsoft's Component Object Model (COM). The paper surveys and describes the OPC ...
  • An access control architecture for XML documents in workflow environments 
    Botha, R; Eloff, J (2001)
    The eXtensible Markup Language {XML) are being upheld as having the potential to change the way business is conducted. This will be effected by changing the way in which information is shared. However, with the sharing of ...
  • Combining context provisions with graph grammar rewriting rules - the three-dimensional case 
    Barnard, A; Ehlers, EM (2001)
    In this paper we consider the representation and generation of three-dimensional structures by means of formal descriptive methods. Graph and graph grammar theory present us with a powerful two-dimensional representational ...
  • Knowledge management: do we do what we preach? 
    Handzic, M; Van Toorn, C; Parkin, P (2001)
    The aim of the case study reported in this paper was to provide a cultural audit of a university school as a typical knowledge-based organisation. The subjects were 24 academic staff members who participated in the study ...
  • Finding adjacencies in non-overlapping polygons 
    Adler, J; Christelis, GD; Deneys, JA; Konidaris, GD; Lewis, G; Lipson, AG; Phillips, RL; Scott-Dawkins, DK; Shell, DA; Strydom, BV; Trakman, WM; Van Gool, LD (2001)
    Two polygons are adjacent if they have edges which share a common edge segment. In this paper we consider the problem of finding adjacencies in a set of n non-overlapping polygons. Using the fact that adjacent edges must ...
  • Formal usability testing - informing design 
    Van Greunen, D; Wesson, J (2001)
    The goal of this paper is to discuss the role of usability testing in software development in South Africa. Throughout the software industry software engineers develop user interfaces (Ul) with little or no support from ...
  • 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 ...
  • Web site readability and navigation techniques: an empirical study 
    Licker, PS; Anderson, R; Macintosh, C; Van Kets, A (2001)
    This research looks into factors that affect the readability of web sites. For those with low literacy skills, low readability may prove to be an insurmountable barrier to profitable, comfortable website use. Two factors ...
  • 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. ...
  • 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 ...
  • Implication in three-valued logics of partial information 
    Britz, K (2001)
    In formal logic, both semantic entailment and the conditional connective are used to formalize the intuitive notion of implication. The former is defined in the meta-language of the logic, and the latter in the language ...
  • The development of a user classification model for a multi-cultural society 
    Streicher, M; Wesson, JL; Calitz, A (2001)
    During the last ten years, a number of computerised testing systems have been developed without considering the users' level of computer proficiency. Students at the University of Port Elizabeth come from a diverse background, ...
  • Finite-state computational morphology - treatment of the Zulu noun 
    Pretorius, L; Bosch, SE (2001)
    Morphological analysis is a basic enabling application for further kinds of natural lan guage processing, including part-of-speech tagging, parsing, translation and other high-level applications. Automated morphological ...

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