Rate of information processing and reaction time of aircraft pilots and non-pilots.

Reaction time and rate of information processing are cited as critical components in the make-up of pilots. A need was identified to establish the validity of various chronometric measures in the selection of pilots. Fifty-eight military and commercial pilots and twenty non-pilots were subjected to Schepers’ Computerised Information Processing Test Battery, which measures reaction time, form discrimination time, colour discrimination time, rate of information processing(perceptual) and rate of information processing (conceptual). Five hypotheses and one postulate were formulated and tested. The results indicate that pilots could be differentiated from non-pilots with 92,3% accuracy. However, the results need to be cross-validated before they are used for selection

The abundance of an invasive freshwater snail Tarebia granifera (Lamarck, 1822) in the Nseleni River, South Africa

The invasive freshwater snail Tarebia granifera (Lamarck, 1822) was first reported in South Africa in 1999 and it has become widespread across the country, with some evidence to suggest that it reduces benthic macroinvertebrate biodiversity. The current study aimed to identify the primary abiotic drivers behind abundance patterns of T. granifera, by comparing the current abundance of the snail in three different regions, and at three depths, of the highly modified Nseleni River in KwaZulu-Natal, South Africa. Tarebia granifera was well established throughout the Nseleni River system, with an overall preference for shallow waters and seasonal temporal patterns of abundance. Although it is uncertain what the ecological impacts of the snail in this system are, its high abundances suggest that it should be controlled where possible and prevented from invading other systems in the region

Modeling top-down and bottom-up drivers of a regime shift in invasive aquatic plant stable states

FWN – Publicaties zonder aanstelling Universiteit Leide

Internal audit competencies : skills requirements for internal audit management in South Africa

Internal auditing is playing an increasingly important role within organisations. The growing demand for internal auditors, as business and corporate governance partners to organisational management, places a larger burden on internal audit managers in respect of the competence and skill requirements they need in order to meet their increasingly diverse and divergent responsibilities. In South Africa, internal auditing is regarded as a scarce skill profession. Published research addresses competencies in various disciplines and professions, including the general competencies required by internal auditors, and the role and function of internal audit managers. However, limited information is available with respect to the relative importance of specific competencies and skills required by internal audit managers. The purpose of this article is to broaden this knowledge area firstly, by identifying the relative importance of various competencies included in IIA guidance pronouncements as being mandatory for internal audit managers. Then, secondly, these ranked IIA competencies are compared with South African and global internal audit leaders’ perceptions of these competencies’ relative importance. The article concludes that the terminology used in the various IIA guidance pronouncements and the published reports on studies conducted by the Institute of Internal Auditors Research Foundation are ambiguous and should be standardised. Furthermore, it is believed that quality-related issues are not appropriately addressed in the guidance pronouncements. This article also identifies substantial differences in the levels of importance attributed to quality-related competencies by the various internal audit leaders. Other areas where significant differences exist are those of soft skills (areas focussing on the performance of the audit engagement) and of operational and management research.http://www.saiga.co.za/publications-sajaar.htmam201

Hydrellia lagarosiphon Deeming (Diptera: Ephydridae), a potential biological control agent for the submerged aquatic weed, Lagarosiphon major (Ridl.) Moss ex Wager (Hydrocharitaceae)

The leaf-mining fly, Hydrellia lagarosiphon Deeming (Diptera: Ephydridae), was investigated in its native range in South Africa, to determine its potential as a biological control agent for Lagarosiphon major (Ridl.) Moss ex Wager (Hydrocharitaceae), an invasive submerged macrophyte that is weedy in many parts of the world. The fly was found throughout the indigenous range of the plant in South Africa. High larval abundance was recorded at field sites with nearly all L. major shoots sampled ontaining larvae, with densities of up to 10 larvae per shoot. Adults laid batches of up to 15 eggs, usually on the abaxial sides of L. major leaves. The larvae mined internally, leaving the epidermal tissues of the upper and lower leaves intact. The larvae underwent three instars which took an average of 24 days and pupated within the leaf tissue, from which the adults emerged. Impact studies in the laboratory showed that H. lagarosiphon larval feeding significantly restricted the formation of L. major side branches. Based on its biology and damage caused to the plant, Hydrellia lagarosiphon could be considered as a useful biological control candidate for L. major in countries where the plant is invasive

Internal auditing : how South Africa compares

Despite South Africa being considered a developing country, internal auditing has developed a robust presence both in the private and public sectors. The CBOK research (conducted by the IIA’s IIARF) shows that local internal audit functions compare well with other more developed regions around the world. A factor that has contributed to the strength of South African internal auditing is the support contained in legislation and private sector codes of corporate governance: the Public Finance Management Act (PFMA) and the Municipal Finance Management Act (MFMA) continue to underpin public sector advances, while the King ll and King lll reports, with their codes of corporate governance, apply to all sectors in South Africa. All of this has placed South Africa’s internal audit functions collectively in a leadership role in Africa.http://www.saiga.co.za/publications-sajaar.htmam201

Simulacral, genealogical, auratic and representational failure: Bushman authenticity as methodological collapse

This article engages with the concept of authenticity as deployed in anthropology. The first section critiques authenticity as a simple reference to cultural purity, a traditional isomorphism or historical verisimilitude or as an ‘ethnographic authenticity’. Demarcation of authenticity must take into account philosophical literature that argues that authenticity is an existential question of the ‘modern’ era. Thus, authenticity is offered to us as individuals as a remedy for the maladies of modernity: alienation, anomie and alterity. Authenticity is then discussed as a question of value within an economy of cultural politics that often draws on simulacra, creating cultural relics of dubious origin. The final section discusses various methodological failures and problematiques that are highlighted by the concern for, and scrutiny of, authenticity. The first is the simulacral failure. The subjects of anthropology are mostly real flesh-and-blood people-on-the-ground with real needs. In contrast is the simulacral subject, the brand, the tourist image, the media image or the ever-familiar hyper-real bushmen. Lastly, the article considers what Spivak calls ‘withholding’ – a resistance to authentic representation by the Other. Resistance suggests a need for a radically altered engagement with the Other that includes both a deepening, and an awareness, of anthropology as a process of common ontological unfolding

Between text and stage: the theatrical adaptations of J.M. Coetzee’s Foe

Several of J.M. Coetzee’s novels have been adapted successfully for the stage, both as theatrical and operatic versions, but these adaptations have not received much critical attention. This article examines the ways in which Peter Glazer and Mark Wheatley have adapted Coetzee’s novel Foe (1986), resulting in two different and distinct stage productions, performed in the US and the UK respectively. In order to explore the complex relationship between the published text and the play versions, the article will ground itself in theories of adaptation, drawing extensively on work by Linda Hutcheon and Robert Stam and Alessandra Raengo. One of the key ideas in adaptation theory is that adaptive fidelity to the source text is neither possible nor desirable, but that adaptation is a more complex, multi-layered intertextual and intermedial interplay of fictional material. The article discusses the two play scripts and analyses the adaptive choices which underpin them and how these structure their meaning-making. Finally, the article also suggests that these scripts can be used to throw more light on Coetzee’s enigmatic novel.DHE