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Towards lecture transcription in resource-scarce environments
(Pattern recognition association of South Africa (PRASA), 2012)
We present progress towards automated Lecture Transcription (LT) in resource scarce environments. Our development has focused on the transcription of lectures in Afrikaans from two faculties at North-West University. A ...
Investigation and efficiency analysis: 405 km transmission line with series compensation
(Crown Publications, 2012)
This article presents an investigative case study and efficiency analysis of the 405 km, 420 kV transmission line between Insukamini substation
in Bulawayo, Zimbabwe and the Matimba thermal power station in South Africa ...
Thermal and efficiency analysis of a single phase induction motor with Peltier devices
(Emerald, 2012)
We present the results obtained from the thermal and efficiency analysis of a single phase
induction motor with Peltier devices. A single phase induction motor is completely simulated in
SolidWorks® and Matlab® Simulink®. ...
Stock return anomalies: evidence from the Johannesburg Stock Exchange
(Taylor & Francis, 2012)
This paper investigates the presence of stock return anomalies for stocks listed on the Johannesburg Stock Exchange, covering the period from 1985 to 2010. Explanatory variables include market capitalization, book-to-market ...
Factors influencing the performance and efficiency of solar water pumping systems: a review
(Academic journals, 2012)
The world is having an energy crisis and currently there is a strong drive towards renewable energy. A renewable energy option is solar energy, where by means of photovoltaic (PV) modules electrical energy can be produced. ...
A simple demand-side management solution for a typical compressed-air system at a South African gold mine
(ERC (Energy Research Centre), 2012)
Once designed, mine compressed-air systems tend to operate at peak levels throughout the life of the mine, despite there being significant periods when this air quantity is not required. This is mainly due to lack of ...
Efficiency and cost analysis of a designed in-line water heating system compared to a conventional water heating system in South Africa
(ERC (Energy Research Centre), 2012)
In this paper, the authors compares the efficiency and cost of a designed in-line water heating system with a conventional water heating system (geyser) in South Africa. The paper provides an overview on water heating ...
Impact of frequency switching on the efficiency of a fully suspended active magnetic bearing system
(Academic journals, 2012)
Due to the rising energy (and electricity) cost it is essential that an active magnetic bearing (AMB) system is operated as efficiently as possible. Frequency switching caused by an external source can cause an AMB system ...
Experimental results of an asynchronous machine with thermoelectric cooling modules
(2012)
It is estimated that globally around 40% of the electricity supplied to the industrial sector is consumed by electric motorised systems and for South Africa around 60% of the electricity supplied is consumed by asynchronous ...
Source stabilisation of single-phase induction motor-pump configurations
(EE Publishers, 2012)
The effect of source stabilisation on the energy consumption
and harmonic distortion of a single-phase induction motor-pump
configuration for a swimming pool in South Africa