Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 2205-2224 of 4825
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I shall, we shall, and all others will: paradoxical information security behaviour
(Emerald, 2018)Purpose – The purpose of this paper is to investigate the lemming effect as a possible cause for the privacy paradox in information security. Design/methodology/approach – Behavioural threshold analysis is used to test ... -
IceCube neutrino generated in a jet-jet collision in TXS 0506+056?
(Fabrizio Serra, 2020)The IceCube event IceCube-170922A appears to originate from the BL Lac object TXS 0506+056. Despite many other BL Lac objects showing similar properties as TXS 0506+056, such as multiwavelength variability or a curved ... -
ICT to disempower? A perspective on ICT as postmodern agent
(2010)The wholesale implementation of Information Technology (IT) has brought with it a host of unintended and unforeseen consequences. Through a literature review and an examination of both postmodernism and IT, it is proposed ... -
Identification and characterization of a FAD-dependent putrescine N-hydroxylase (GorA) from Gordonia rubripertincta CWB2
(Elsevier, 2016)A putrescine N-hydroxylase from Gordonia rubripertincta CWB2 (GorA), a microbial N-hydroxylating monooxygenase (NMO), specific for a range of diamines (putrescine > cadaverine > hexamethylenediamine) was identified. This ... -
Identification and characterization of Cr-, Cd-, and Ni-tolerant bacteria isolated from mine tailings
(Taylor & Francis, 2017)Eleven bacterial strains were isolated from soil samples collected from mine tailings. Bacterial strains were checked for tolerance against heavy metals (Cr, Cd, Ni), using the agar dilution method. All the strains showed ... -
Identification of HESS J1303-631 as a pulsar wind nebula through y-ray, x-ray, and radio observations
(EDP Science, 2012)Aims. The previously unidentified very high-energy (VHE; E > 100 GeV) γ-ray source HESS J1303−631, discovered in 2004, is re-examined including new data from the H.E.S.S. Cherenkov telescope array in order to identify this ... -
Identification of network cities in South Africa
(Springer, 2019)Settlements, cities and regions function as integrated systems. This resulted in the creation of functional connections and when linked, networks within which trade occurred. This played an important role in the creation ... -
The identification of organic substances associated with freshwater Ceratium hirundinella cells
(Schweizerbart Science, 2018)Phytoplankton synthesize biomolecules through the process of photosynthesis, and the decomposition of these molecules causes odors in water. While the freshwater dinoflagellate Ceratium hirundinella is well known for causing ... -
Identification of sand frogs (Anura: Pyxicephalidae: Tomopterna) from Kenya with the description of two new species
(Magnolia Press, 2013)African sand frogs in the genus Tomopterna presently include 13 species. These are known to be highly cryptic and morphologically similar. Despite increased effort in the recent past, the taxonomy of the group is still ... -
Identification of solar periodicities in southern African baobab δ13C record
(ASSAf, 2020)Spectral analysis using wavelet, Lomb–Scargle and maximum entropy techniques of the proxy rainfall record of northeastern South Africa based on annual carbon isotope (δ13C) data obtained from baobab trees for the period ... -
Identifying elements of social identity development for mathematics teachers in the Western Cape, South Africa for professional online engagement
(Association for the Advancement of Computing in Education (AACE), 2014)This paper reports on the analyses of a custom-made questionnaire distributed to systematic random selected teachers in 179 schools in the Western Cape Province, South Africa. The purpose of the analysis was to enquire ... -
Identifying information security risks in a social network using self-organising maps
(Springer, 2019)Managing information security risks in an organisation is one of the most important tasks an organisation has. Unfortunately, due to the complexity of most organisational systems, identifying information security risks can ... -
Identifying South African tourism time series structure using singular spectrum analysis
(South African Statistical Association, 2014)Singular spectrum analysis is a powerful non-parametric time series method that applies singular value decomposition to a Hankel structured matrix. The method can handle complex time series structures that include ... -
Identifying the brightest Galactic globular clusters for future observations by H.E.S.S. and CTA
(Oxford Univ Press, 2018)We present results from an emission code that assumes millisecond pulsars to be sources of relativistic particles in globular clusters (GCs) and models the resulting spectral energy distribution of Galactic GCs due to ... -
The identity of Schizoglossum theileri (Apocynaceae, Asclepiadoideae)
(Magnolia Press, 2016)Schizoglossum theileri (Apocynaceae, Asclepiadoideae) is found to be conspecific with Asclepias meliodora and is here formally reduced to synonymy under the latter -
Identity theft: empirical evidence from a phishing exercise
(Springer, 2007)Identity theft is an emerging threat in our networked world and more individuals and companies fall victim to this type of fraud. User training is an important part of ICT security awareness; however, IT management ... -
Idiosyncratic responses to climate-driven forest fragmentation and marine incursions in reed frogs from Central Africa and the Gulf of Guinea Islands
(Wiley, 2017)Organismal traits interact with environmental variation to mediate how species respond to shared landscapes. Thus, differences in traits related to dispersal ability or physiological tolerance may result in phylogeographic ... -
Idiozetes malgache, a new species of idiozetidae (acari: oribatida) from madagascar
(Taylor & Francis, 2010) -
The IGY and beyond: a brief history of ground-based cosmic-ray detectors
(Elsevier, 2009)The state of art of ground-based cosmic-ray research from its discovery to present is reviewed. After discovery of cosmic rays by Hess in 1912, the nature of the primary and secondary radiation was established from recordings ...