Browsing Conference Papers - Potchefstroom Campus by Title
Now showing items 307-326 of 713
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GRB observations with H.E.S.S.
(Sissa Medialab, 2019)Fermi-LAT observations have proven that GeV γ-ray emission is a relatively common feature for many Gamma Ray Bursts (GRB). However the low effective area of space detectors implies low statistics for high-energy photons ... -
GRB observations with H.E.S.S. II
(PoS, 2017)The High Energy Stereoscopic System (H.E.S.S.) has been searching for counterparts of Gamma Ray Bursts (GRBs) for many years. In 2012 the system was upgraded with a fifth 28m diameter telescope (CT5) which is equipped ... -
Green IS management framework verification: explicating the enabling capabilities of green IS
(BIS-Verlag, 2014)The first objective of the paper is to expose the Green Information Systems (Green IS) management framework comprising the enabling capabilities of Green IS, moderating concepts, and relationships to environmental ... -
Guidelines for the design and creation of a web form to facilitate the registration of first time tax payers: an HCI approach
(IBIMA, 2010)Research has been conducted both in the field of Human-Computer Interaction and in the field of design and creation. Very little research has been conducted in the area of tax registration systems. No research was carried ... -
H.E.S.S. discovery of very-high-energy gamma-ray emission of PKS 1440-389
(Sissa Medialab, 2015)Blazars are the most abundant class of known extragalactic very-high-energy (VHE, E>100 GeV) gamma-ray sources. However, one of the biggest difficulties in investigating their VHE emission resides in their limited number, ... -
The H.E.S.S. II GRB observation scheme
(AIP, 2017)Gamma-ray bursts (GRBs) are some of the Universe’s most enigmatic and exotic events. However, at energies above 10 GeV their behaviour remains largely unknown. Although space based telescopes such as the Fermi-LAT have ... -
Hard spectral tails in magnetars
(Cambridge Univ Press, 2017)Pulsed non-thermal quiescent emission between 10 keV and around 150 keV has been observed in ~10 magnetars. For inner magnetospheric models of such hard X-ray signals, resonant Compton upscattering of soft thermal photons ... -
Hard X-ray quiescent emission in magnetars via resonant Compton upscattering
(IOP Publishing, 2017)Non-thermal quiescent X-ray emission extending between 10 keV and around 150 keV has been seen in about 10 magnetars by RXTE, INTEGRAL, Suzaku, NuSTAR and Fermi- GBM. For inner magnetospheric models of such hard X-ray ... -
Harmonic emission assessment on a distribution network: the opportunity for the prevailing angle in harmonic phasors
(IET, 2017)Harmonic emission assessment in high-voltage networks with a number of renewable power plants (RPP) interconnected is challenging. A sound scientific methodology readily accessible to engineers is needed to validate ... -
Harmonic impedance assessment using prevailing phasors
(IEEE, 2018)In accordance with the IEC 61000-3-6, the evaluation of the harmonic emissions requires an accurate harmonic impedance representation of the system. However, the assessment of a harmonic impedance is understood to be a ... -
Harmonious industrialization: classifying, connecting and valuating industries based on their contribution to human need
(IEOM, 2017)An industry can be defined as a system within which homogenous processes strive toward a common generalizable outp ut. An industry comprises various economic, social and environmental activities. Various ... -
Hazardous particles from coal fires from Santa Catarina, South Brazil
(International Pittsburgh Coal Conference, 2016) -
Heading alignment with summarized inertial pose constraints
(IEEE, 2014)A discontinuity seems to exist in present aided inertial navigation systems – the operational availability of high cost inertial navigation currently depends on the availability of a valid GPS lock. In general GPS ... -
Heart rate variability and the dynamic nature of the retinal microvasculature: providing insight into the brain-retina-heart link: the SABPA study
(Karger, 2019)Controversy exists regarding the contribution of the autonomic nervous system (ANS) to the retinal microvasculature’s autoregulatory capacities. It was demonstrated that mean retinal vessel responses to systemic sympathetic ... -
The heliospheric modulation of electrons and positrons over a complete solar cycle
(Sissa Medialab, 2019)The solutions of a comprehensive three-dimensional drift model are compared to PAMELA and AMS-02 spectra of electrons and positrons in order to describe and understand their different modulation down to 1 MeV. This is ... -
High-energy emission from Black Widows and Redbacks
(Sissa Medialab, 2015)A large number of new black widow and redback energetic millisecond pulsars with irradiated stellar companions have been discovered through radio searches of unidentified Fermi sources. We construct a 3D emission model ... -
High-energy emission properties of pulsars
(PoS, 2017)The sheer number of new γ-ray pulsar discoveries by the Fermi Large Area Telescope since 2008, combined with the quality of new multi-frequency data, has caused a revolution in the field of high-energy rotation-powered ... -
High-energy pulsar light curves in an offset polar cap B-field geometry
(HEASA, 2016)The light curves and spectral properties of more than 200 γ -ray pulsars have been measured in unsurpassed detail in the eight years since the launch of the hugely successful Fermi Large Area Telescope (LAT) γ -ray ... -
A holistic approach to presenting DSM project results
(IEEE, 2014)A slight variance in dataset quality or baseline model accuracy can affect the level of confidence at which DSM project results are calculated. General measurement and verification (M&V) guidelines mitigate this inherent ... -
HTR system integration in Europe and South Africa
(Archer, 2014)
