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Browsing School of Computing by Title

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  • Random context structure grammars 
    Ehlers, E.M.; von Solms, S. H. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    Random Context Structure Grammars are defined. The language generated by a Random Context Structure Grammar is a set of three-dimensional digital structures. A hierarchy of Random Context Grammars is discussed briefly. ...
  • 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 ...
  • Ranking information system problems in a user environment 
    Bruwer, P.J.S. (Computer Society of South Africa (on behalf of SAICSIT), 1988)
    In a previous research project (Bruwer [ 1 J) a methodology to identify information system problems from a user point of view, was presented. This methodology was also illustrated by means of empirical data collected ...
  • Ray guarding configurations of adjacent rectangles 
    Sanders, I; Lubinsky, D; Sears, M (2000)
    Guarding and covering problems have great importance in Computational Geometry. In this paper the notion of a ray guard, a guard that can only 'see' along a single ray, is introduced. The problem of siting the fewest ...
  • Real-time control the system model - a holistic approach to system design 
    Considine, TN (1996)
    The Real-time Control System Model is a system design methodology which provides robust systems based on Object technology. The paper will detail the components of the model including the control layers and the time-based ...
  • Real-time facial animation for virtual characters 
    Burford, DJ; Blake, EH (2001)
    Facial expressions form an important part of human to human communication. In order to exploit the fall potential of computer networks and the Internet for communication and interaction, provision should be made for conveying ...
  • Real-Time Interactive Multiprogramming 
    Heher, A. D. (Computer Society of South Africa (on behalf of SAICSIT), 1979)
    This paper is concerned with the problems of interactive computing when multiple real-time tasks are involved. The interactive facilities which can be provided are described and some of the important software engineering ...
  • 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 ...
  • Reasoning about changing information 
    Blackburn, P; Jaspars, J; De Rijke, M (South African Computer Society (SAICSIT), 1997)
    The purpose of these notes is two fold: (i) to give a reasonably self-contained introduction to a particular approach to theory change, known as the Alchourron-Gardenfors-Makinson (AGM) approach, and to discuss some of the ...
  • Reasoning about the Properties of an Enterprise Information System. 
    van der Poll, John A.; Kotzé, Paula (2004)
    A condensed specification of a multi-level marketing enterprise in the Z specification language is presented and a number of proof obligations that result from operations on the state is stated. The feasibility of using ...
  • The recall performance of multiple associative memories - a comparison of thresholding strategies 
    Vahed, A (South African Computer Society (SAICSIT), 1995)
    The associative network presents a practical and efficient means for the storage and retrieval of data. Although the recall abilities of single-layer associative memories have been well researched [3], little investigation ...
  • The recall performance of multiple associative memories - a comparison of thresholding strategies 
    Vahed, A (1995)
    The associative network presents a practical and efficient means for the storage and retrieval of data. Although the recall abilities of single-layer associative memories have been well researched[3], little investigation ...
  • Recommendations for improvement to the South African information technology curriculum: a case study of new higher certificate graduates' first year of employment 
    Panday, Annelee (2019-05)
    Employment issues in South Africa (SA) are a significant problem. There are ongoing discussions revolving around the employability challenges facing South African graduates, particularly in the Information Technology (IT) ...
  • Reconciling the needs of new information systems graduates and their employers in small, developed countries 
    Turner, R; Lowry, G (South African Computer Society (SAICSIT), 1999)
    This paper is the first of a series of studies of a research program aimed at achieving a better fit between university study and professional practise of information systems. The paper reports the results of two surveys: ...
  • The recovery problem in multidatabase systems - characteristics and solutions 
    Renaud, K; Kotze, P (South African Computer Society (SAICSIT), 1997)
    In many applications today multiple pre-existing database systems are integrated into a single multiple database system called a multi­database system. One of the biggest problems for transaction management in a multidatabase ...
  • Recursive specifications and formal logic. What benefits for intelligent tutoring systems? 
    Tcheeko, L (South African Computer Society (SAICSIT), 1998)
    The pedagogical assessment of a tutoring system relies upon a proof of convergence: for such a tutor the correction of student mistakes must not forever delay the teaching process. Such a tutor must provide uniform diagnosis ...
  • Reducing fractal encoding complexities 
    Cloete, E; Venter, LM (1998)
    In this paper we address the time complexity problem associated with fractal image coding. In particular, we describe a new hybrid technique called Fractal Vector Quantization coding (FVQ), which takes advantage of the ...
  • A reference model for the process control domain of application 
    Dhevcharran, Nirvani (1995-11)
    The process control domain is intrinsically complex and dynamic. It has proved to be difficult to construct and maintain process control systems under the traditional software development methodologies. Object Orientation ...
  • A reference model for the process control domain of application 
    Dhevcharran, N; Steenkamp, AL; Ram, V (1996)
    The increasing complexity of large process control systems impedes efforts to construct, co-ordinate and monitor these systems effectively. The object oriented paradigm and associated mechanisms greatly assist in software ...
  • A Reference Point for Designing a Cybersecurity Curriculum for Universities 
    Da Veiga, Adele; Ochola, Elisha Oketch; Mujinga, Mathias; Padayachee, Keshnee; Mwim, Emilia N.; Kritzinger, Elmarie; Loock, Marianne; Machaka, Pheeha (Springer, Cham, 2021-07)
    The objective of this study is to propose a cybersecurity curriculum from a best practice perspective for universities and other higher educational institutions. Cybersecurity is a fast-growing part of the overall job ...

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