Browsing by Author "Viljoen, H."
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- ItemIdentification of scar carcinoma due to tuberculosis using computed tomography and correlation with histology(2007) Viljoen, H.; Cilliers, G.; Ackermann, C.; Andronikou, S.
- ItemIdentifying secondary series for stepwise common singular spectrum analysis(Operations Research Society of South Africa, 2013) Viljoen, H.; Steel, S. J.Common singular spectrum analysis is a technique which can be used to forecast a primary time series by using the information from a secondary series. Not all secondary series, however, provide useful information. A first contribution in this paper is to point out the properties which a secondary series should have in order to improve the forecast accuracy of the primary series. The second contribution is a proposal which can be used to select a secondary series from several candidate series. Empirical studies suggest that the proposal performs well.
- ItemUpper gastrointestinal series: routine use to evaluate gastroesophageal reflux in children(2007) Greyling, P. J.; Andronikou, S.; Ackermann, C.; Erlank, A.; Lameen, H.; Schulze, O. C.; Viljoen, H.