Research 2011

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Faculty of Engineering, Built Environment and Information Technology

Prof RF Sandenbergh, Dean

Telephone number: 012 420 2440
E-mail address: dean@eng.up.ac.za

Message by the Dean

Research is regarded as a primary driver of excellence and is an essential part of the activities of the Faculty of Engineering, Built Environment and Information Technology. It not only covers the spectrum of disciplines in which formal programmes are offered in its schools of Engineering, the Built Environment, Information Technology and the Graduate School of Technology Management, but is closely aligned with the strategic imperatives of government and industry.

The seven departments in the School of Engineering have active research groups that conduct research in a number of research focus areas that address issues of local and international relevance. In addition, there are a number of research centres and research chairs that are supported by industry, as well as the Carl and Emily Fuchs Institute for Microelectronics, which support the Faculty's research agenda.

The research focus areas of the Department of Chemical Engineering include process modelling and control, applied materials, environmental engineering, water utilisation, reaction engineering, biochemical engineering, sustainable process systems engineering and tribology. In the field of simulating chemical engineering processes, contributions were made on the optimisation of autogenous milling by optimising a set of operational parameters to yield significant savings. Lead and toxic metal-free detonators were developed for the mining industry, and research was conducted on the use of layered materials as benign functional additives as controlled release vehicles for insecticides.

The research focus areas of the Department of Civil Engineering include geotechnical engineering, water resources engineering, structural engineering and transportation engineering. The Chair in Railway Engineering is associated with the Department. The Department recently acquired a geotechnical centrifuge that will greatly enhance its geotechnical modelling capabilities. Contributions were made in research on collapsible soils, track deflection on heavy-haul railway lines, ground movements below certain railway lines, the quality of concrete slabs, heat evolution in foamed concrete, and a sensitivity analysis in earthquake engineering.

The Department of Electrical, Electronic and Computer Engineering has research focus areas in advanced sensor networks, bioengineering, control systems, electromagnetism, electronics and microelectronics, energy systems, industrial electronics and electric drives, intelligent systems, lighting and vision, power systems, broadband wireless multimedia communication, and signals and digital communications. In this Department, the Bioengineering Group conducted research on acoustic models of cochlear implants. The Broadband Wireless Multimedia Communication Group worked on transmission scheduling for wireless mesh networks. The Control Systems Group continued its work on the modelling, validation and control of an industrial fuel gas blending system. The Advanced Sensor Networks Group conducted research on wireless sensor and actor networks, dynamic connectivity in wireless underground sensor networks, and cooperative communication systems in underground tunnels. The Electromagnetism Group analysed and designed various types of antennae for high-technology applications. The Electronics and Microelectronics Group developed a variety of designs, including a switch-mode power amplifier and a wideband low-noise amplifier. The Energy Systems, and Efficiency and Demand-side Management Group conducted research on models and applications in viral dynamics, predictive control in power generation, and the energy-efficiency optimisation of belt conveyors. The Intelligent Systems Group developed statistical gear health analysis and conducted research on the detection of land-cover change, and developed systems for detecting new human settlements.

The Department of Industrial and Systems Engineering has research focus areas in resource optimisation, industry and functional area application, business engineering and enterprise architecture. Contributions were made on optimisation problems in transport, stochastic modelling towards inventory management and reliability modelling, and the optimisation of humanitarian logistics.

Research in the Department of Materials Science and Metallurgical Engineering was focused on physical metallurgy, welding and corrosion, minerals processing and hydrometallurgy, and pyrometallurgy and refractory materials. The establishment of a Chair in Pyrometallurgy promoted growth in the research activities related to high-temperature furnace technology, with a strong focus on sintering technology, refractory materials, waste material treatment and process optimisation. Minerals processing research remains directed towards iron ore processing and waste treatment, with a developing focus area in coal processing. Research activities in physical metallurgy focused on microstructure development during processing, hot and cold working, and welding metallurgy.

The research focus areas in the Department of Mechanical and Aeronautical Engineering are centred around vibration monitoring and diagnostics, vibration measurement and analysis, structural dynamic design and analysis, computational solid mechanics, enhanced heat transfer, electronics cooling, micro-channel condensation, optimisation with constructal theory, off-road vehicle dynamics, tyres and modelling. In this Department, the Dynamic Systems Group consolidated its research thrust in vibration-based condition monitoring, and maintenance engineering and asset integrity management. New developments were focused on the use of discrepancy analysis and waveform reconstruction for applications such as these. The Thermofluids Research Group made contributions in the areas of convective heat transfer, design of heat exchangers using computational fluid dynamics and the principles of constructal theory. The Vehicle Dynamics Group contributed to improving the dynamics of off-road vehicles by using simulation and experimental validation.

The Department of Mining Engineering has research focus areas in rock engineering, safety, environmental engineering and explosives engineering. Contributions were made in rock engineering with the development of a new approach to simulate crush pillar behaviour in a tabular layout as typically used as support in gold, and more extensively, in platinum stopes. Safety-related research included a contribution on the potential of the use of incident reconstruction simulations to avoid mine incidents, since virtual reality education and training offers the advantage of exposing employees to different hazards in a safe environment, and to safely simulate the potential outcome of unsafe acts when exposed to these hazards and risks on a daily basis. Research in environmental engineering included a project on the utilisation (rather than release) of mining-induced methane gas into the atmosphere. To reduce its inherent danger and to mitigate its global warming impact, a carbon credit project under the clean development mechanism (CDM) of the Kyoto Protocol was also developed and implemented to capture and destroy methane in underground mines.

In the School for the Built Environment, research was conducted in three departments: Architecture, Construction Economics (including the Real Estate programme) and Town and Regional Planning.

The Department of Architecture has research focus areas in environmental potential, housing and urban environments, and heritage and cultural studies. Contributions were made on the origins of the southern African building regulations, recycling of the Thesen Island Boiler House as a hotel, the life and homes of Catharina of Paliacatte, stone cladding as artificial ruin for triggering nostalgia, the dialectic of ruin, the emergence of a Lowveld architectural style, and the importance of heritage plants and plant relics for historical places, and old gardens as a source of new ornamental plants.

The Department of Construction Economics conducts research in the following areas: procurement methods, social housing, land rights, facilities management, quantity surveying practice, resilient cities, real estate curricula, finance and maintenance, construction information, classification, specification, and project management, and building cost analysis. Contributions were made to the development of sustainable human settlements with an extensive interdisciplinary review of literature on the attributes of ecology, sustainability and implications for built environment research.

In real estate, a model was developed to determine the relationship between property share prices and underlying asset values, compare short-term fluctuations with company value, obtain driving forces of company growth and identify information that could be used to assist in property valuation. The variables that drive property demand were investigated using statistical fits of historical macroeconomic variables applied to a South African context to explain recent residential property activity. A risk management framework was developed and the importance of everyone in an organisation being involved in the management of risks was highlighted.

The Department of Town and Regional Planning has the following research focus areas: strategic development planning, sustainable settlement planning, design and maintenance, mining, planning law and sustainable human settlement, the creation of safe, responsive and enabling urban spaces, and planning methods and techniques. Contributions were made on the need for a balance between transformation and service provision in state infrastructure investment and development spending.

The School of Information Technology made research contributions in its departments of Computer Science, Information Science (including publishing and book history) and Informatics.

The research focus areas in the Department of Computer Science are computational intelligence, computer and information security, theoretical computer science, software engineering and computer science education. The Computational Intelligence Research Group developed new, biologically inspired optimisation algorithms. Models of the foraging behaviour of ants were used to develop a self-adapting behavioural particle swarm optimiser, where individual search behaviours self-adapt based on the local search environment. Models of the cemetery organisation behaviour and the division of labour behaviour observed in ant colonies have been used to develop new algorithms for distributed load balancing in computer clusters. A number of strategies have been developed to self-adapt control parameter values used in particle swarm optimisation, eliminating the need to manually tune problem-dependent parameters.

The research focus areas in the Department of Information Science are knowledge management, information processes, meta- context of information, and book and publishing studies. The Department is coordinating an ongoing interdisciplinary research project to innovate the curriculum for information literacy. This project has created a stimulus for research because of the new possibilities in the different fields of research, enhancing creativity, and developing a positive staff morale and intrinsic motivation.

Book history focused on the ability of adolescents with hearing loss in special schools to access and use academic material. The annual book publishing industry survey reports for 2009 and 2010, as well as the Book Publishing Industry Annual Survey Broad Trends Report, 2008-2010, were completed. Research on information behaviour in various contexts was continued, including librarian management.

The research focus areas in the Department of Informatics are information systems and organisation, information systems and education, and information and communication technology for sustainable development. Each focus area is associated with one or more International Federation for Information Processing (IFIP) working groups. A highlight in the information systems and organisation focus area was a project that focused on the development of a framework to be used in the design of financial trading applications in the South African investment banking environment.

Research in the Graduate School of Technology Management (GSTM) is focused on technology and innovation management, project management, maintenance and physical asset management, and systems and lifecycle management. In project management, contributions were made with the investigation of the state-of-the-art status of current project management approaches followed in South Africa with the aim of aiding in positioning South Africa to ensure that all possible revenue streams are obtained during the transition to a green economy. In technology and innovation, studies were done on human language technology, the performance of science parks and how they contribute to innovation outcomes in South Africa, and on technology roadmaps in the mining industry. In energy research, an assessment was done of the technological sustainability of biodiesel development in South Africa.

Prof Roelf Sandenbergh



 

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