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Faculty of Natural Sciences@PUK

Faculty of Natural Sciences@PUK

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Recent Submissions

A diet expert system utilizing linear programming models in a rule-based inference engine

Van der Merwe, Annette; Krüger, Hennie; Steyn, Tjaart (Tadbir Operational Research Group, 2014)

Linear programming is commonly used for solving complex problems in various fields, such as dietetics. Expert systems use expertise and inference procedures to solve problems that require advanced expert knowledge and are ...
A generalized additive neural network application in information security

Du Toit, Tiny; Kruger, Hennie (Tadbir Operational Research Group, 2014)

Traditionally spam has been considered as an inconvenience requiring workers to sift through and delete large numbers of e-mail messages per day. However, new developments and the Internet have dramatically transformed the ...
Experiments to improve forecasting accuracy of regression models with minimal assumptions

Van der Westhuizen, Magderie; Hattingh, Giel; Kruger, Hennie (Tadbir Operational Research Group, 2010)

The forecasting accuracy of a regression model relies heavily on the applicability of the assumptions made by the model builder. In addition, the presence of outliers may also lead to models that are not reliable and thus ...
A vocabulary test to assess information security awareness

Kruger, Hennie; Drevin, Lynette; Steyn, Tjaart (Emerald, 2010)

Purpose – The dependence on human involvement and human behavior to protect information assets necessitates an information security awareness program to make people aware of their roles and responsibilities towards information ...
A framework for good corporate governance and organisational learning – an empirical study

Kearney, W.D.; Kruger, H.A. (SDIWC (Society of Digital Information and Wireless Communications), 2013)

The importance of applying good governance principles has grown over the past decade and many studies have been performed to investigate the role and impact of such principles. One of the difficulties in the governance ...
Normal- and reverse-phase paper chromatography of leaf extracts of dandelions

Du Toit, Maria H.; Eggen, Per-Odd; Kvittigen, Lise; Partali, Vassilia; Schmid, Rudolf (American Chemical Society, 2012)

This demonstration describes how normal and reverse phase chromatography can be illustrated using only chromatography paper for the separation of extracts of dandelions.