Browsing Faculty of Engineering by Title
Now showing items 519-538 of 1122
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Implications of Sepedi/English code switching for ASR systems
(Pattern recognition association of South Africa (PRASA), 2013)Code switching (the process of switching from one language to another during a conversation) is a common phenomenon in multilingual environments. Where a minority and dominant language coincide, code switching from the ... -
Improved event based method for harmonic impedance assessment
(IEEE, 2016)The quantification of harmonic emission requires an accurate model of the network harmonic impedances. A number of techniques have been proposed for the assessment of the network harmonic impedances to be practical and ... -
Improved gold recovery by accelerated gravity separation
(Gecamin Publishers, 2014)This project was specifically aimed at using increased acceleration separation, as a method to optimize the recovery of gold in an ore body mainly consisting of hematite where the specific gravity of gold is much higher ... -
Improved reactivity of large coal particles by K2CO3 addition during steam gasification
(Elsevier, 2013)In this study, the excess solution impregnation method was used to impregnate large coal particles (5 and 10 mm) with K2CO3, and the effect of the additive on steam gasification reactivity was investigated. A washed bituminous, ... -
Improved transition models for cepstral trajectories
(Pattern recognition association of South Africa (PRASA), 2012)We improve on a piece-wise linear model of the trajectories of Mel Frequency Cepstral Coefficients, which are commonly used as features in Automatic Speech Recognition. For this purpose, we have created a very clean ... -
The improvement of system damping by grid integration of PV energy sources
(IEEE, 2017)The impact of static generators on power system small signal stability is evaluated by means of micro-synchrophasors collected in a distribution system using a class A Power Quality recorder that also functions as a Phasor ... -
Improving data management for environmental reporting in the gold mining industry
(Stellenbosch Univ, 2019)Environmental reporting is a realistic alternative for mines to prioritise operational changes in crucial environmental areas. Gold mines report to multiple platforms – i.e., integrated reporting. All these platforms ... -
Improving dynamic microgrid modelling through the use of synchronised field data
(IEEE, 2020)Simulation during the design and operation of microgrids should include dynamic phenomena that would be a result of the unpredictable variation in renewable generation and loading. Detailed modelling of different components ... -
Improving energy consumption of an induction motor by design of a power factor correction system and estimation of it's saving on a large scale
(IEEE, 2014)Power factor correction (PFC) is common in commercial and industrial applications. A need to extend its application increased with the dwindling natural resources used for power generation and also exceeding energy demand, ... -
Improving functional density of time-critical applications using hardware-based dynamic reconfiguration and bitstream specialisation
(South African Institute of Computer Scientists and Information Technologists, 2019)The dynamic reconfiguration of an FPGA has many advantages, but the overhead from the process reduces the functional density of applications. Functional density is an indication of the composite benefits a reconfigured ... -
Improving QoS for real-time multimedia traffic in ad-hoc networks with delay aware multi-path routing
(IEEE, 2008)A Mobile Ad-hoc Network (MANET) is a wireless network in which nodes, in the absence of fixed access points, communicate via single or multi-hop paths. Each node in a MANET should thus be able to perform necessary routing ... -
Improving the efficiency of single phase asynchronous machines
(EE Publishers, 2014)Globally around 40% of the electricity supplied to the industrial and mining sectors is consumed by electric motorised systems and for South Africa around 60% of the electricity supplied to these sectors is consumed by ... -
Improving the Lwazi ASR baseline
(Interspeech 2016, 2016)We investigate the impact of recent advances in speech recognition techniques for under-resourced languages. Specifically, we review earlier results published on the Lwazi ASR corpus of South African languages, and ... -
In silico insights into the tunable magnetic properties of transition metal doped monolayer SnS2
(IEEE, 2018)Recent advancements in computation hardware and software has fueled the adoption of in silico techniques, such as density functional theory (DFT), as an investigative tool in materials' science. Hence, this study employs ... -
In situ capturing and absorption of sulfur gases formed during thermal treatment of South African coals
(ACS, 2018)The objective of this study, the first of its kind on these specific South African low-sulfur coals, was to capture H2S and SO2 produced under inert and oxidizing conditions from sulfur compounds present in the coals. The ... -
In-line water heating system for industrial application
(2015)Due to the increase of electricity prices in South Africa and the World, there exists the need for energy efficient water heating systems. The authors of this paper conducted a literature study on existing water heating ... -
In-road microwave sensor for electronic vehicle identification and tracking: link budget analysis and antenna prototype
(IEEE, 2018)To reduce the cost and increase reliability of the vehicle radio-frequency identification and tracking systems, an alternative placement of the interrogator is investigated. Conventional systems make use of an overhead ... -
In-situ biodiesel production from municipal waste water treatment plant clarifier effluent stream
(ETA-Florence Renewable Energies, 2015)The natural occurrence of micro-algal species in water treatment plants introduces many operational problems. If one, however, considers the high lipid, protein and carbohydrate content, micro-algae become attractive as ... -
In-situ biodiesel production from sunflower seeds using liquefaction
(ETA-Florence Renewable Energies, 2015)One of the most expensive steps in the bio-diesel value chain is the extraction of oil from the seeds. Simultaneous extraction and transesterification will lower the overall capital costs of the process while enhancing ... -
In-situ CO2 capture during a UCG process by simulati ng possible CO2 absorption on roof, floor and coal mineral structures
(International Pittsburgh Coal Conference, 2017)