South African Computer Journal (SACJ): Recent submissions

  • An AI search algorithm to obtain the shortest simplex path 
    Scott, TG; Hattingh, J.M.; Steyn, T (South African Computer Society (SAICSIT), 1996)
    The simplex method is one way of solving a linear programming problem (LP-problem). An A* search algorithm based on a certain evaluation function has been developed to obtain the shortest path to an optimal solution within ...
  • An integrated classification of multiple database systems 
    Renaud, K; Kotze, P (South African Computer Society (SAICSIT), 1996)
    In many applications today multiple pre-existing database systems are integrated into one multiple database system. There are various characteristics of these systems which distinguish them from other types of multiple ...
  • The homological transfer research method revisited 
    Koornhof, C (South African Computer Society (SAICSIT), 1996)
    The Homological transfer method is a very efficient research method which is based on similarities between manufacturing, financial, educational, informational and other productive processes. The existence of these ...
  • The complexity of Petri Net transformations 
    Donaldson, SR; Bause, F; Kritzinger, Pieter S. (South African Computer Society (SAICSIT), 1996)
    We consider the complexity of several property preserving Petri net transformations found in the literature. These transfor­mations were candidates for.inclusion in a software tool to peiform liveness and boundedness ...
  • Critical success factors for implementing CASE at a selection of companies in South Africa 
    Addison, TM; Hamersma, S (South African Computer Society (SAICSIT), 1996)
    CASE, or Computer Assisted Software Engineering, provides the potential for a future in which computer programs will be generated automatically from business rules, but many potential buyers have adopted a wait and see ...
  • A new framework for information security to avoid information anarchy 
    Parker, DB (South African Computer Society (SAICSIT), 1996)
    It is reasoned that to preserve the three traditional elements of information security, confidentiality, integrity and availabil­ity, it is not sufficient to fully protect information. Three new elements are introduced: ...
  • Information security on the electronic superhighway 
    Von Solms, SH (South African Computer Society (SAICSIT), 1996)
    This paper discusses a number of security protocols for the Internet and World Wide Web. The first two, SSL and SHTTP, provide general authentication, confidentiality and integrity facilities, while SEPP is a payment ...
  • Design of secure medical database systems 
    Pangalos, G; Khair, M (South African Computer Society (SAICSIT), 1996)
    A database design methodology is presented in this paper which aims to improve the security of medical database systems. The proposed methodology is based on both the discretionary and the mandatory database security ...
  • Functional and operational security system for open distributed environments 
    Muftic, S (South African Computer Society (SAICSIT), 1996)
    The paper describes the design details and implementation results of the completely integrated, functional and operational security system, suitable for open distributed environments. Functionality means that security ...
  • Encryption policy for the global information infrastructure 
    Hoffman, LJ (South African Computer Society (SAICSIT), 1996)
    Cryptology policy deals not only with various technological encryption methods but also with thorny political and adminis­trative problems. It is a challenge to address these in a timely and open manner. The problems arise ...
  • Reinforcing password authentication with typing biometrics 
    De Ru, WG; Eloff, JHP (South African Computer Society (SAICSIT), 1996)
    This paper presents a methodology for the reinforcement of password authentication with the use of typing biometrical mechanisms. Typing biometrics refers to the analysis of keystroke patterns, which is unique for each ...
  • The evaluation of business process reengineering projects in South Africa 
    Whittaker, L (South African Computer Society (SAICSIT), 1996)
    While much has been written describing the necessity for and effects of Business Process Reengineering (BPR), little research has been conducted into the evaluation of BPR projects. This paper describes the result of a ...
  • An approach for the standardisation of policies for selection of computer hardware and software 
    Petkov, D (South African Computer Society (SAICSIT), 1996)
    This paper suggests an approach for the selection of microcomputer equipment in a decentralised environment. It is based on a modification of the procedure of the Analytic Hierarchy Process (AHP) by T. Saaty. The structuring ...
  • Efficient shared memory multiprocessing and object-oriented programming 
    Machanick, Philip (South African Computer Society (SAICSIT), 1996)
    Object-oriented techniques are shown to hold promise for addressing the growing speed gap between memory and processors on shared-memory multiprocessors. However, reducing cache misses can be at the expense of more misses ...
  • ATM transmission convergence implementations: SONET/SDH vs Cell-based 
    De Jager, N; Roos, J (South African Computer Society (SAICSIT), 1996)
    This article discusses various issues around the Transmission Convergence (TC) sublayer in the physical layer of ATM. A brief introduction is given to the layered approach and functionality of the ATM physical layer. This ...
  • Reviewing IS curricula: A practical approach 
    Froneman, L; Roode, JD (South African Computer Society (SAICSIT), 1996)
    Many curriculum designs are based purely on what educators think it should be, reflecting their own experiences or idiosyn­crasies, with little reference to the needs of the information systems field. A number of studies ...
  • The status of computing manpower and training in tertiary education in Southern African universities 1995 
    Bishop, JM (South African Computer Society (SAICSIT), 1996)
    The survey of staff and student numbers done in 1992 provided the first country-wide picture of computing departments in South Africa. This report presents the picture three years later, from data collected in 1995. It ...
  • A comparison of graph colouring techniques 
    Parkinson, E; Warren, PR (South African Computer Society (SAICSIT), 1995)
    Many scheduling problems can be modelled as graph colouring problems. This paper gives a survey of heuristic algorithms used to colour graphs by describing a number of such algorithms found in the literature using an ...
  • 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 ...
  • Enabling a collaborative approach to management 
    Tromp, PJ; Roode, JD (South African Computer Society (SAICSIT), 1995)
    In this paper the collaborative approach to management is examined and, in particular, how this approach could benefit from the right technological support. Collaborative management focuses on the joint performance of ...

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