Author:Mthembu, N S; Greene, J RDate:2004Measures of class separability can provide valuable insights into data, and suggest promising classification algorithms and approaches in data mining. We compare three simple class separability measures used in supervised machine learning. ...Read more
Author:Wiseman, KeithDate:1989Providing a clean, potable supply of water is a critical problem in remote or underdeveloped rural areas. Water is needed for drinking, cooking, washing and bathing, but is often only available from traditional sources such as springs, rivers ...Read more
Author:Morgan, B E; Lahav, O; Hearne, G; Loewenthal, R EDate:2003An ambient temperature ferrite process has been developed for the removal of iron and non-ferrous metals from AMD waters. The process involves the controlled formation of magnetite (Fe3 O4 ) that has the capacity to substitute divalent and ...Read more
Author:Greene, J RDate:2004The low-dimensional visualisation of highdimensional data is a valuable way of detecting structure (such as clusters, and the presence of outliers) in the data, and avoiding some of the pitfalls of blind data manipulation. Projection based ...Read more
Author:Eleri, EwahDate:1996Sub-Saharan Africa's past and present contribution to the build-up of greenhouse gases has been low; the region therefore does not pose a major threat to the global climate. Nonetheless, the occurrence of climate change might pose formidable ...Read more
Author:Tyler, EmilyDate:2009This paper considers the alignment of energy policy in South Africa with the Cabinet’s mitigation vision of a ‘peak, plateau and decline’ greenhouse gas emissions trajectory to 2050. First, the term ‘policy’ is defined as having a number of ...Read more