Author:Price, T; Majozi, TDate:Aug 2010Heat exchanger networks in steam systems are traditionally designed to operate in parallel. Coetzee and Majozi (Ind. Eng. Chem. Res. 2008, 47, 4405-4413) found that by reusing steam condensate within the network the steam flow rate could be ...Read more
Author:Boesack, CD; Marwala, T; Nelwamondo, Fulufhelo VDate:Mar 2012Automatic Generation Control (AGC) of large interconnected power systems are typically controlled by a PI or PID type control law. Recently intelligent control techniques such as GA-Fuzzy controllers have been widely applied within the power ...Read more
Author:Beraki, Asmerom F; Landman, WA; DeWitt, DDate:Nov 2015The study compares one- and two-tiered forecasting systems as represented by the South African Weather Service Coupled Model and its atmosphere-only version. In this comparative framework, the main difference between these global climate ...Read more
Author:Chutter, FMDate:Dec 1968There is a large population of Simulium chutteri lewis in the Vaal river at and below the village of Warrenton in the north-east of the Cape Province, South Africa. The female of this species attacks man, cattle and horses and had become a ...Read more
Author:Cilliers, Jacques E; Smit, JCDate:Oct 2007In [1] the authors introduced a technique for generating mismatched pulse compression filters for linear frequency chirp signals. The technique minimizes the sum of the pulse compression sidelobes in a p L –norm sense. It was shown that ...Read more
Author:Booth, R; Casini, G; Meyer, T; Varzinczak, IDate:Jul 2015Propositional Typicality Logic (PTL) is a recently proposed logic, obtained by enriching classical propositional logic with a typicality operator. In spite of the non-monotonic features introduced by the semantics adopted for the typicality ...Read more
Author:Cooper, Antony K; Coetzee, SerenaDate:Apr 2020Publicly-available mobile data can be used to derive fine grain commuting and travel patterns. These types of data include geocoded or geotagged discrete units of communication: messages, posts, tweets, status updates, check-ins, images and ...Read more
Author:Mcnamara, DA; Botha, LDate:Nov 1993The radiation properties of individual folded dipole antennas mounted at various radial distances from the centre of conducting masts of different diameters are described in compact fashion.Read more
Author:Msiza, IS; Mistry, J; Leke-Betechuoh, B; Nelwamondo, Fulufhelo V; Marwala, TDate:Jul 2011The concept of fingerprint classification is an important one because of the need to, before executing a database search procedure, virtually break the fingerprint template database into smaller, manageable partitions. This is done in order ...Read more
Author:Booth, R; Meyer, T; Varzinczak, I; Wassermann, RDate:Sep 2011Standard belief change assumes an underlying logic containing full classical propositional logic. However, there are good reasons for considering belief change in less expressive logics as well. In this paper the authors build on recent ...Read more
Author:Rens, G; Meyer, T; Lakemeyer, GDate:May 2013We investigate the requirements for specifying the behaviors of actions in a stochastic domain. That is, we propose how to write sentences in a logical language to capture a model of probabilistic transitions due to the execution of actions ...Read more
Author:Greben, JMDate:Nov 1991This paper originated from the author's dissatisfaction with the way the discrete Fourier transform is usually presented in the literature. Although mathematically correct, the physical meaning of the common representation is unsatisfactory, ...Read more
Author:Osborne, C; Cornish, L; Luyckx, SDate:1997The aim of this work was to produce V8C7-WC and V4C3-WC powders with grain size between 1 and 2mu-m, as a first stage of the preparation of fine grained WC-VC-Co hardmetal. V8C7-WC powder was produced via two routes: starting from preformed ...Read more
Author:Grobler, M; Swart, IDate:Jul 2014Cyber warfare is a contentious topic, with no agreement on whether this is a real possibility or an unrealistic extension of the physical battlefield. This article will not debate the validity and legality of the concept of cyber warfare, but ...Read more
Author:Cilliers, WCDate:Jun 1968Lambswool is reputed to process certain distinctive properties, which makes it especially suited for selected end uses.Read more
Author:Shatalov, M; Manzhirov, A; Fedotov, IDate:Sep 2012The theory of accreting structures is a new and fast developing branch of analytical mechanics basing on the theory of partial differential and integral equations. In the present paper the authors analyze qualitative properties of accreting ...Read more
Author:Varzinczak, JJDate:Jul 2009Domain descriptions in reasoning about actions are logical theories and as such they may also evolve. Given that, knowledge engineers also need revision tools to incorporate new incoming laws about the dynamic environment. Here the authors ...Read more
Author:Greben, JMDate:2009It has become common to describe complexity science as a new approach to many scientific questions that are less amenable to the usual “mechanistic view” of reality in science. However, we believe that the contrast implied here is to a large ...Read more
Author:Cilliers, Jacques E; Smit, JCDate:Sep 2009In previous paper the authors introduced a technique for generating mismatched pulse compression filters for linear frequency chirp signals. The technique minimizes the sum of the pulse compression sidelobes in an Lp norm sense. It was shown ...Read more