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Browsing 2001 National Research and Development Conference by Title

Browsing 2001 National Research and Development Conference by Title

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  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 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. ...
  • 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 ...
  • Information Systems strategic planning and IS function performance: an empirical study 
    Cohen, JF (2001)
    The validity of managerial activities such as strategic planning have come under increasing scrutiny in recent years. In particular, the validity of information systems strategic planning (ISSP) within South African ...
  • Introductory IT at a tertiary level - is ICDL the answer? 
    Dixie, CH; Wesson, JL (2001)
    Research is underway at the University of Port Elizabeth (UPE) to establish a framework for introductory IT courses to match the needs of future graduates of diverse programmes from the Faculties of Arts, Building Sciences, ...
  • Issues affecting the adoption of data mining in South Africa 
    Hart, ML; Davies, K; Barker-Goldie, E-J; Theron, A (2001)
    This research describes a study into the adoption of data mining (DM) techniques and tools in industry. They are seen by most companies interviewed as strategically important, with key applications varying per sector, but ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Optimal multi-splitting of numeric ranges for decision tree induction 
    Lutu, PEN (2001)
    Data mining is the process of extracting informative patterns from data stored in a database or data warehouse. Decision tree induction algorithms, from the area of machine learning are well suited for building classification ...
  • 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 ...
  • A proposal for dynamic access lists for TCP/IP packet filtering 
    Hazelhurst, S (2001)
    The use of IP filtering to improve system security is well established, and although limited in what it can achieve has proved to be efficient and effective. In the design of a security policy there is always a trade-off ...

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