College of Science, Engineering and Technology: Recent submissions

  • Finding regular paths in acyclic graphs 
    Wood, P.T. (SAICS, 1989-11-29)
    Increasing the expressive power of relational query languages by providing some form of recursion is currently a topic of much research. For many recursive queries in relational databases, a relation can be represented as ...
  • Persistent sets - an alternative to relational databases 
    Berman, S. (SAICS, 1989-11-29)
    Persistent programming languages, which extend conventional languages to treat database data as well, are becoming viable alternatives to Database Management Systems. However, they are currently lacking in one essential ...
  • Database consistency under UNIX 
    Viktor, H.L. (SAICS, 1989-11-29)
    A recovery technique to facilitate the recovery from system failures should ensure a consistent database state at all times. The UNIX write system call uses a delayed-write policy. Data blocks are kept in a buffer cache ...
  • A file server for a multi-transputer UNIX system 
    Hoffman, K. Smit, G. de V. (SAICS, 1989-11-29)
    The DISTRIX operating system is a multiprocessor UNIX-like distributed operating system. It consists of a number of satellite processors connected to central servers. The system is based on the MINIX operating system, ...
  • Implementing UNIX on the INMOS transputer 
    McCullagh, P. Smit, G. de V. (SAICS, 1989-11-29)
    This paper examines the transputer as the target for a UNIX port and discusses specific problems that were encountered during implementation of a UNIX kernel in a transputer environment. Some solutions to the problems are ...
  • The use of a lattice for fast pattern matching 
    Oosthuizen, G.D. (SAICS, 1989-11-29)
    Pattern recognition involves the matching of a given pattern against a collection of patterns in store in order to identify the given pattern as belonging to a particular class already known to the system or not. Similarly, ...
  • Induction of decision trees in a domain with continuous attributes 
    Cloete, I. Theron, H. (SAICS, 1989-11-29)
    Quinlan's ID3 is a popular and efficient algorithm for inducing decision trees from concept examples, where the examples are presented as vectors of attribute-value pairs. For attributes with large, continuous domains ID3 ...
  • A design environment for semantic data models 
    Kambanis, J. (SAICS, 1989-11-29)
    This paper describes the functionality and architecture of a Semantic Data Modeling environment. It integrates User Interface techniques used in Computer Aided Software Engineering and Expert Systems shells into a system ...
  • An interrupt driven paradigm of concurrent programming 
    Clayton, P.G. (SAICS, 1989-11-29)
    This paper introduces a class of concurrent programming construct based on an interrupt driven paradigm. This programming model is designed to simplify the application of conventional imperative programming techniques to ...
  • The case for functional programming 
    Wentworth, E.P. (SAICS, 1989-11-29)
    Functional programming has gained a foothold in academic institutions, and the first commercial interests have been noted. The paradigm is presented by way of some small examples, and arguments are given in favour of this ...
  • A pipelined control strategy for inferencing 
    Kourie, D.G. Potgieter, A.E.G. (SAICS, 1989-11-29)
    The task of deriving a solution to a goal from a Hom clause database is seen in terms of finding a solution tree as a subtree of an and/or tree. The way in which various well-known control strategies derive such solutions ...
  • Data structuring via functions 
    Venter, B.H. (SAICS, 1989-11-29)
    A programming language data model is introduced, based on the notions that variables are functions and types are sets of values. It is shown that, despite the simplicity of the underlying mathematical formalism, the data ...
  • Experience with the development of a neural network simulator 
    Cloete, I. Ludik, J. (SAICS, 1989-11-29)
    Researchers experimenting with structured neural networks must be able to imple­ment and test their ideas. Since most of the network models presume much structure, and network architecture design is a major component in ...
  • Ecological applications using a novel expert system shell 
    Riordan, D. Bradshaw, J.A. Carden, K.J. (SAICS, 1989-11-29)
    Much of the information used by ecologists in modeling and decision making is imprecise. The imprecision arises both from data which is inexact or incom­plete and from the use of ecological principles which are sometimes ...
  • Object-oriented systems, so what? 
    Barth, Gerhard (SAICS, 1989-11-29)
  • Proceedings of the 5th Southern African Computer Symposium, 1989 (Frontmatter) 
    Kritzinger, Pieter (Editor) (SAICS, 1989-11-29)
    Front page, table of contents, preface, back page
  • First-principles studies of impurity defects formation and their implications on electronic and magnetic properties in a two-dimensional solid : the case of silicene 
    Maboe, Doctor Paul Aggripa (2024-07-31)
    We report on first-principles density functional theory (DFT) calculations of interactions between extrinsic defects and intrinsic structural defects in silicene. Specifically, we investigate the stability, structural, ...
  • Biodegradation of environmental significant inorganics using aerobic bacteria found in Blesbokspruit Wetland, South Africa 
    Kgabile, Mpho Gift (2022-12-21)
    The Blesbokspruit wetland is known to be one of the imperative wetlands in Republic of South Africa (RSA), located in region of Ekurhuleni, Gauteng Province. A continuous discharge towards the Blesbokspruit wetland from ...
  • Topology optimization of mining vehicle tyres 
    Müller, Peter (2024-09)
    Tyres that are used on light duty mining vehicles (LDMV’s) are for commercial vehicles that have been designed for higher speeds and used predominantly on-highway tarred road surfaces. Substitute tyres that are more ...
  • A system dynamics model to enhance on-time delivery of infrastructure projects within a power utility in South Africa 
    Mashamba, Takalani (2024)
    Energy plays a fundamental role in sustainable development and poverty alleviation efforts. The energy sector is critical, looking at the economic growth perspective as it contributes about 3.2% of South Africa’s Gross ...

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