Browsing Conference Papers - Potchefstroom Campus by Title
Now showing items 482-501 of 713
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On the reporting of power quality
(IEEE, 2011)The reporting of power quality (PQ) requires consideration as different users of information on Quality of Supply (QoS) have different needs. Reporting on the compliancy of voltage regulation in terms of a PQ standard can ... -
On the underlying particles in the jet of 3C 279
(PoS, 2017)Recent high-energy missions have allowed keeping watch over blazars in flaring states, which provide deep insights into the engine powered by supermassive black holes. However, having a blazar caught in a very bright ... -
On-line performance monitoring of a transmission line using synchrophasor measurements
(IEEE, 2015)Synchrophasors are increasingly being implemented to improve the understanding of network performance. This paper presents the use of voltage and current synchrophasors in the on-line performance monitoring of a transmission ... -
Ontology goes postmodern in ICT
(ACM Press, 2010)This paper investigates the move from philosophical ontology to information systems ontologies. Ontology has traditionally been (and still is) a philosophical discipline that studies the nature of existence. In a certain ... -
An ontology-driven software development framework
(2010)The software development process has been curtailed by the lack of a methodology that can capture and maintain the softer, humanist characteristics of organizational systems into the software product. This is attributed ... -
Ontwerp van 'n energiebestuurstelsel vir optimale energieverbruik en effektiwiteit van 'n distribusievlakmikrokragnetwerk
(2014)South African state-owned utility company, Eskom, is under severe pressure to ensure the stability and reliability of the national electricity grid. With a shortfall in capacity of the national electricity grid, the ... -
Ontwerp van ’n transmissielyn-monteringsoplossing vir ’n onbemande vier-rotor helikopter
(AOSIS, 2014)A need exists for a transmission line monitoring system for use by Eskom to inspect transmission lines. A solution which uses a single board computer, visual and infrared cameras and a GPS module is described. Real-time ... -
Operational advantages of mobile refrigeration using a closed loop heat rejection configuration
(2018)The operational advantages of localised cooling, in particular moving the cooling source as close as possible to the area where cooling is required, has been investigated by different authors over a number of years. ... -
Optical variability modelling of newly identified blazars and blazar candidates behind Magellanic clouds
(Sissa Medialab, 2019)We present results of a variability study in the optical band of 44 newly identified blazar candidates behind the Magellanic Clouds. Our sample contains 27 flat spectrum radio quasars (FSRQs) and 17 BL Lacertae objects (BL ... -
Optimal passive optical network planning under demand uncertainty
(SATNAC, 2014)As a result of ever-increasing demand for access level bandwidth, long deployment cycles and the popularisation of more economically viable Point-to-Multipoint (P2MP) networks, service providers are moving to extensively ... -
Optimal switching-flux motor design and its cogging effect reduction
(IEEE, 2017)This paper presents an optimal switching-flux motor design in terms of cheap cost, simple manufacturing process, and easy maintenance. The high cogging effect and its impact on the performance of the machine is studied by ... -
Optimising of a domestic paraffin geyser for rural application
(IEEE, 2014)A water heating system based on paraffin was investigated. Such a system fulfils a need in rural areas where electrify is not available and solar geysers are not practical. The solution is particularly apt due to the ... -
Optimization of a residential heat pump system
(IEEE, 2019)With the constant increase in electrical energy costs in South Africa, households need to look at ways to either decrease their electrical energy usage or ways to supply their own electrical energy. This paper looks at the ... -
The optimized scheduling of a sanitary water heating system for commercial high rise apartment buildings
(IEEE, 2016)The installation of energy efficient water heaters in the residential and commercial sectors of South Africa have drawn much attention for more than a decade due to the energy crisis in South Africa. Most of the installations ... -
Overload Control Centre Bypass Detection System
(IEEE, 2014)Road transport is a significant economic necessity for freight movement in developing countries. The freight industry has a low profit margin resulting in overloading. As overloaded vehicles cause significant damage to ... -
An overview of the application of phasor measurement units (PMUs) and network coherent data in an interconnected power network: a case for Namibia
(Elsevier, 2017)This paper presents the technological background, the structure of a time-stamp for network coherent data and the emerging documentation on the data requirements for applications making use of network coherent data. ... -
An overview of the MHONGOOSE survey: observing nearby galaxies with MeerKAT
(Sissa Medialab, 2016)MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with H I masses from ∼ 10 6 to ∼ 10 11 M , and luminosities from M R ∼ 12 ... -
The oxidative stress profile and its relation to vascular function in a bi-ethnic cohort: the SABPA study
(Karger, 2019)Oxidative stress and inflammation has been implicated in arterial stiffness, and hypertension development. Oxidative stress may interfere with normal vascular function by inactivation of NO and/or the production of ... -
PANGU (PAir-productioN Gamma-ray Unit): a high resolution gamma-ray space telescope
(Sissa Medialab, 2015) -
Particle-in-cell simulations of shear boundary layers in relativistic jets
(Sissa Medialab, 2018)The supermassive black holes in the centres of active galaxies (AGN) eject powerful relativistic jets which propagate over kpc scales, showing no significant momentum loss. Both observational evidence as well as theoretical ...