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Browsing Journal Articles by Faculty "Faculty of Engineering and the Built Environment"

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A cleaner production assessment of the ultra-fine coal waste generated in South Africa

Author: Reddick, J F ; Von Blottnitz, H ; Kothuis, B Date: 2007 The South African coal mining industry is currently disposing of about 10 million tons of ultra-fine coal (<150 µm) per year. Once discarded, these sulphur-containing ultra-fines contribute to several environmental problems. As part of a ... Read more
A commentary on the intellectual health of the nation

Author: Vaughan, Christopher L ; Reddy, B Dayanand ; Noakes, Timothy D ; Moran, V C Date: 2007 The record of high-quality research at South African universities is not as impressive as we may have thought, according to some international rankings. Whatever we might think of these assessments, we have to take them seriously. We suggest ... Read more
A common heritage / an appropriated history: The Cape Dutch preservation and revival movement as nation and empire builder

Author: Coetzer, Nic Date: 2007 The Cape Dutch architectural revival at the time of the Union of South Africa in 1910 points to more than just an emerging interest in building preservation and the Arts and Crafts rural ideal germane to English architectural circles of the ... Read more
A Comparison of Close-Range Photogrammetry to Terrestrial Laser Scanning for Heritage Documentation

Author: Ruther, Heinz ; Smit, Julian Lloyd ; Kamamba, Donatius Date: 2013 This paper describes the photogrammetric and laser scan survey of an excavated section of the Laetoli hominid track-way in Tanzania. The survey was designed to allow for comparison to a prior detailed survey of the track-way carried out in ... Read more
A critical review of the educational philosophies underpinning science and engineering foundation programmes

Author: Kloot, B ; Case, J M ; Marshall, D Date: 2008 More than a decade prior to the official dismantling of apartheid in South Africa, a number of universities launched foundation programmes to assist disadvantaged students. This article focuses on science and engineering foundation programmes, ... Read more
A finite-difference solution of solute transport through a membrane bioreactor

Author: Godongwana, B ; Solomons, D ; Sheldon, M S Date: 2015 The current paper presents a theoretical analysis of the transport of solutes through a fixed-film membrane bioreactor (MBR), immobilised with an active biocatalyst. The dimensionless convection-diffusion equation with variable coefficients ... Read more
A step towards standardising accelerated corrosion tests on laboratory reinforced concrete specimens

Author: Malumbela, Goitseone ; Moyo, Pilate ; Alexander, Mark Date: 2012 Natural steel corrosion of reinforced concrete (RC) structures is a slow process which researchers find necessary to accelerate in laboratory tests to obtain needed damage in a short time. Regrettably, there is no standard procedure for ... Read more
A technique for optimal selection of segmentation scale parameters for object-oriented classification of urban scenes

Author: Ikokou, Guy Blanchard ; Smit, Julian Date: 2013 Multi-scale image segmentation produces high level object features at more than one level, compared to single scale segmentation. Objects generated from this type of segmentation hold additional attributes such as mean values per spectral ... Read more
The acceptability of concrete block construction in low cost housing in the Cape Peninsula area

Author: Bredeveldt, Toni K ; Alexander, Mark G ; Bowen, Paul A Date: 2002 This article presents the findings of a research project examining the acceptability of concrete block construction for low cost housing in the Cape Peninsula in terms of materials and execution. Data were collected by means of a questionnaire ... Read more
Access and affordability of electricity in developing countries

Author: Winkler, Harald ; Alam, Mozaharul ; Rahman, Atiq ; Mwakasonda, Stanford ; Simões, André Felipe ; Rovere, Emilio Lèbre La Date: 2011 A key objective of developing countries is to provide affordable access to modern energy services in order to support economic and social development. The paper presents a number of arguments for why and in which way energy access and ... Read more
Access to water - the impact of climate change in small municipalities

Author: Mukheibir, Pierre Date: 2007 The key objective of this case study is to demonstrate the affect of projected climate change impacts on the local water supply of a small town and the related financial consequences in terms of water pricing and access. While the delivery ... Read more
Adaptive Bandwidth Management and Joint Call Admission Control to Enhance System Utilization and QoS in Heterogeneous Wireless Networks

Author: Falowo, Olabisi E ; Chan, HAnthony Date: 2007 :The coexistence of different cellular networks in the same area necessitates joint radio resource management for enhanced QoS provisioning and efficient radio resource utilization. We propose adaptive bandwidth management and joint call ... Read more c b
AI4R2R (AI for Rock to Revenue): A Review of the Applications of AI in Mineral Processing

Author: Mishra, Amit Kumar Date: 12 Oct 2021 In the last few years, jargon, such as machine learning (ML) and artificial intelligence (AI), have been ubiquitous in both popular science media as well as the academic literature. Many industries have tried the current suite of ML and AI ... Read more c b
An All-Mach Number HLLC-Based Scheme for Multi-Phase Flow with Surface Tension

Author: Oomar, Muhammad Y ; Malan, Arnaud G ; Horwitz, Roy A D ; Jones, Bevan W S ; Langdon, Genevieve S Date: 10 Apr 2021 This paper presents an all-Mach method for two-phase inviscid flow in the presence of surface tension. A modified version of the Hartens–Lax–van Leer Contact (HLLC) solver is developed and combined for the first time with a widely used ... Read more c b
An agglomerate scale model for the heap bioleaching of chalcocite

Author: Ogbonna, N ; Petersen, J ; Laurie, H D G Date: 2006 A mathematical model for bioleaching at the agglomerate scale is developed. The agglomerate is defined as a unit volume of a heap which contains a solid phase (a size distribution of ore particles), a liquid phase (stagnant and flowing leaching ... Read more
Anaerobic digestion of Spirulina sp. and Scenedesmus sp.: a comparison and investigation of the impact of mechanical pre-treatment

Author: Inglesby, A E ; Griffiths, M J ; Harrison, S T L ; Van Hille, R P Date: May 2015 AAnaerobic digestion (AD) is a unit process that integrates beneficially and sustainably into many bioprocesses. This study assesses and compares the production of methane from the biomass of the microalga Scenedesmus sp. and the cyanobacterium ... Read more
Analysis of Nonlinear Dispersion of a Pollutant Ejected by an External Source into a Channel Flow

Author: Chinyoka, T ; Makinde, O D Date: 2010 This paper focuses on the transient analysis of nonlinear dispersion of a pollutant ejected by an external source into a laminar flow of an incompressible fluid in a channel. The influence of density variation with pollutant concentration is ... Read more
Analysis of possible quantified emission reduction commitments by individual Annex I Parties

Author: Winkler, Harald ; Marquard, Andrew ; Letete, Thapelo Date: 2009 This paper draws on research in the public domain, in order to provide an analytical basis for a proposal on possible quantified emission reduction commitments for Annex 1 countries under the Kyoto Protocol. Read more c b
Analysis of tender sum forecasting by quantity surveyors and contractors in South Africa

Author: Pearl, R G ; Akintoye, A ; Bowen, P A ; Hardcastle, C Date: 2003 Although extensive research has been undertaken on the accuracy of quantity surveyors' tender price forecasts, very little of this research contains information relating to the factors affecting tender sum forecasting by quantity surveyors ... Read more
Analysis of tender sum forecasting by quantity surveyors and contractors in South Africa

Author: Pearl, R G ; Akintoye, A ; Bowen, P A ; Hardcastle, C Date: 2003 Although extensive research has been undertaken on the accuracy of quantity surveyors' tender price forecasts, very little of this research contains information relating to the factors affecting tender sum forecasting by quantity surveyors ... Read more

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