Browsing Faculty of Natural and Agricultural Sciences by Issue Date
Now showing items 21-40 of 4817
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An introduction to realized volatility
(Taylor & Francis, 2007)Financial market volatility is central to the theory and practice of asset pricing, option pricing, asset allocation, portfolio selection, portfolio rebalancing and various risk management applications. Although financial ... -
Contributions from nearby pulsars to the local cosmic ray electron spectrum
(Elsevier, 2008)PSR J0437-4715 is one of the closest millisecond pulsars (MSPs) to Earth, lying at a distance of _140 pc. This pulsar has a characteristic age of 4.9 Gyr and a relatively low spindown power of _1034 ergs/s. During its ... -
Characterisation of Escherichia coli O157 strains from humans, cattle and pigs in the North-West Province, South Africa
(Elsevier Science Limited, 2008) -
Probing the nature of the Vela X Cocoon
(IOP Publishing Limited, 2008) -
On the use of diatom-based biological monitoring Part 1: A comparison of the response of diversity and aut-eclolgical diatom indices to water quality variables in the Marico-Molopo River catchment
(South Africa Water Research Commission, 2008) -
Verspreiding en habitats van drie lewerbot-tussen-gashere in Suid-Afrika en die gesondheidsimplikasies daarvan
(National Research Foundation, 2008) -
Ekonometriese modelle in finansiële risiko
(AOSIS, 2008)This paper provides an overview of the contributions by prof JH Venter to financial risk and volatility modelling, estimation and forecasting. Venter's research is based on the classical GARCH model which he refines in ... -
Estimating the birth period of pulsars through GLAST LAT observations of their wind nebulae
(IOP Publishing LimitedAmerican Astronomical Society, 2008) -
Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with HESS
(EDP Sciences, 2008)The HESS experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, >100 GeV) $\gamma$-rays along the ... -
The role of radial perpendicular diffusion and latitude dependent acceleration along the solar
(Elsevier, 2008)A numerical model, based on Parker’s transport equation, describing the modulation of anomalous cosmic rays and containing diffusive shock acceleration is applied. The role of radial perpendicular diffusion at the solar ... -
The profitability of CFD day trading on the JSE
(Investment Analysts Society of South Africa, 2008) -
Die skoenlusmetode: 'n kritiese oorsig
(AOSIS, 2008)Sedert die ontstaan van die skoenlusmetodologie, het dit beide 'n kragtige versameling oplossings gebied vir die praktiese gebruiker van statistiek , sowel as 'n ryk bron van teoretiese en metodologiese oplossings vir ... -
The meaning of place-making in planning: historical overview and implications for urban and regional planning
(University of the Free State, 2008) -
Patterns of exotic plant invasions in fragmented urban and rural grasslands acrss continents
(Springer Netherlands, 2008) -
Cosmic ray flux at the earth in a variable heliosphere
(Elsevier, 2008)In recent years the variability of the cosmic ray flux has become one of the main issues not only for the interpretation of the abundances of cosmogenic isotopes in cosmochronic archives like, e.g., ice cores, but also for ... -
Heliospace physics in South Africa: IHY 2007
(Elsevier, 2008)An overview is given of research activities in South Africa related to the International Heliophysical Year in 2007. The emphasis is on Space Physics (Geospace and Heliospace). A short historical perspective is given, ...