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Browsing 1989 5th South African Computer Symposium by Issue Date

Browsing 1989 5th South African Computer Symposium by Issue Date

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  • 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 ...
  • 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
  • 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 ...
  • 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 ...
  • Object-oriented systems, so what? 
    Barth, Gerhard (SAICS, 1989-11-29)
  • 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 ...
  • 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, ...
  • 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 ...
  • 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 ...
  • 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 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 ...
  • 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, ...
  • 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 ...
  • 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 ...
  • A multi-criteria partitioning technique for information system design 
    Mende, J. (SAICS, 1989-11-29)
    In order to design and operate a complex computer based information system, one needs to partition its transformation process into modules of manageable size. The same process can be partitioned in many different ways, ...
  • 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 ...
  • Relational database triggers 
    Rennhackkamp, M. (SAICS, 1989-11-29)
    A database procedure, also named a trigger, is a powerful procedural construct. It forms part of the database definition and is stored in a compiled form for efficient execution. A trigger mechanism consists of actions to ...
  • A methodology for the management of end-user computing 
    Eloff, J.H.P. Eloff, M.M. (SAICS, 1989-11-29)
    End-user computing is becoming an issue of strategic importance in the computer industry today. We have seen many organizations implementing end-user computing according to the guidelines as included in conventional software ...
  • Query processing in NRDNIX 
    Lamprechts, S. (SAICS, 1989-11-29)
    NRDNIX is a distributed database management system (DDBMS) under implementation on a network of powerful personal computers. Several design aspects influence the query processing strategy followed in NRDNIX. These design ...

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