Browsing by Title
Now showing items 56-75 of 1659
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Alteration of Bax-to-Bcl-2 ratio modulates the anticancer activity of methanolic extract of Commelina benghalensis (Commelinaceae) in Jurkat T cells
(Academic Journals, 2008)Stem extracts of Commelina benghalensis (Linn.), although not extensively documented, are frequently used in traditional medicine for the treatment of ailments such as skin malformations and outgrowths. Accordingly, the ... -
Alternative perspectives on orality, literacy and education: a view from South Africa.
(Routledge, 2001)The question of the 'great divide' between orality and literacy has been critically addressed by various scholars of literacy, including social literacy theorists. This paper uses the notions of primary and secondary ... -
Am I my brother’s keeper? on personal identity and responsibility
(Philosophical Society of Southern Africa, 2013)The psychological continuity theory of personal identity has recently been accused of not meeting what is claimed to be a fundamental requirement on theories of identity - to explain personal moral responsibility. Although ... -
The ambiguity of Johan Heyns: sitting at Bavinck's left or right hand? : the Reformed Churches in South Africa and the struggle for justice : remembering 1960-1990
(2013)Following some biographic introductory comments, the argument of this contribution proceeds in two steps. First, the distinction between Herman Bavinck’s left and right hand is clarified, amongst others with reference to ... -
Amino acids 1055 to 1192 in the S2 Region of severe acute respiratory syndrome Coronavirus S Protein induce neutralizing antibodies: Implications for the development of vaccines and antiviral agents
(American Society for Microbiology, 2005)The spike (S) protein of the severe acute respiratory syndrome coronavirus (SARS-CoV) interacts with cellular receptors to mediate membrane fusion, allowing viral entry into host cells; hence it is recognized as the primary ... -
Amphibious Horses: Beings in the Littoral and Liminal Contact Zones
(2013)Horses galloping in littoral zones are represented as embodying wildness, freedom and a prelapsarian quality. Roy Campbell’s ‘The Horses of the Camargue’ includes themes which recur in texts about littoral horses: the ... -
An investigation into current attitudes towards English at the University of the Western Cape
(Stellenbosch University, 1997)This work-in-progess paper describes the writer's current research into the language attitudes, preferences and usage of the student speech community at the University of the Western Cape. It specifically looks at responses ... -
An overview of recent changes to corporate governance frameworks as it pertains to executive remuneration
(University of Fort Hare, 2012) -
Anaerobes and bacterial vaginosis in pregnancy: virulence factors contributing to vaginal colonisation
(Multidisciplinary Digital Publishing Institute, 2014)The aetiology and pathogenesis of bacterial vaginosis (BV) is unclear but it appears to be associated with factors that disrupt the normal acidity of the vagina thus altering the equilibrium between the normal vaginal ... -
Analysing the professional development of teaching and learning from a political ethics of care perspective
(Routledge, 2014)This paper uses Tronto’s political ethics of care as a normative framework to evaluate a model of teaching and learning professional development. This framework identifies five integrated moral elements of care – ... -
The analysis of indexed astronomical time series – X. Significance testing of O − C data
(Oxford University Press, 2006)It is assumed that O − C (‘observed minus calculated’) values of periodic variable stars are determined by three processes, namely measurement errors, random cycle-to-cycle jitter in the period, and possibly long-term ... -
The analysis of indexed astronomical time series – XI. The statistics of oversampled white noise periodograms
(Oxford University Press, 2015)The distribution of the maxima of periodograms is considered in the case where the time series is made up of regularly sampled, uncorrelated Gaussians. It is pointed out that if there is no oversampling, then for large ... -
The analysis of indexed astronomical time series – XII. The statistics of oversampled Fourier spectra of noise plus a single sinusoid
(Oxford University Press, 2015)With few exceptions, theoretical studies of periodogram properties focus on pure noise time series. This paper considers the case in which the time series consists of noise together with a single sinusoid, observed at ... -
The analysis of irregularly observed stochastic astronomical time-series – I. Basics of linear stochastic differential equations
(Oxford University Press, 2005)The theory of low-order linear stochastic differential equations is reviewed. Solutions to these equations give the continuous time analogues of discrete time autoregressive time-series. Explicit forms for the power ... -
An analysis of pulsation periods of long period
(Royal Statistical Society, 2007)Summary: We report the results of a period change analysis of time series observations for 378 pulsating variable stars. The null hypothesis of no trend in expected periods is tested for each of the stars. The tests are ... -
An analysis of the current and future deployment of Information Systems and Technology at the University of the Western Cape
(Dept of Information Systems, Univ. of the Western Cape, 2000)In order to successfully deploy information technology and information systems, any organisation must have a strategy indicating where its business is going, an understanding of the information systems that will help to ... -
An analysis of voice over Internet Protocol in wireless mesh networks
(IEEE, 2014)The paper focuses on analyzing the affects of wireless mesh networks with some mobile nodes on Voice over Internet Protocol service quality. Our interest is to examine this in simulation to learn how to better deploy voice ... -
An analysis of what has been "lost" in the interpretation and transcription process of selected TRC testimonies
(Department of General Linguistics, Stellenbosch University, 2006)The main aim of this research is to evaluate “what has been lost” in the simultaneous interpretation and transcription processes of selected Truth and Reconciliation Commission (TRC) testimonies. The testimonies under ... -
ANCAEE: A novel clustering algorithm for energy efficiency in wireless sensor networks
(Scientific Research Publishing, 2011)One of the major constraints of wireless sensor networks is limited energy available to sensor nodes because of the small size of the batteries they use as source of power. Clustering is one of the routing techniques that ... -
The Anglican Church and Feminism: Challenging the patriarchy of our faith
(2013)Gender-based violence is a problem in most Southern African countries and yet it has generally received little attention from governments and civil society—including Christian churches. In recent years, some churches have ...
