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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Pictograms for conveying medicine instructions: comprehension in various South African language groups

Dowse, R., Ehlers, M. 11 1900 (has links) (PDF)
The comprehension of medicine instructions is essential for the safe and effective use of medicines. In cases where low literacy constitutes a possible barrier to understanding written medicine information fully, the inclusion of pictograms may facilitate comprehension. Twenty-three internationally available pictograms and 23 corresponding locally developed images were evaluated in 304 low-literate respondents from eight different South African language groups. Demographic data were collected and an English literacy test was administered to those respondents who had stated that they could read English. Interviewees were shown the 46 pictograms in random order and were asked for their interpretation. Preference for either the international or local version was assessed. Correct interpretation of individual pictograms ranged from 14% to 97%. Images which had been developed locally were more successful in eliciting correct interpretations than those obtained from an international source (USP pictograms). Only 2 of the 23 USP pictograms achieved the 85% criterion of the American National Standards Institute compared with 12 of 23 locally developed counterparts. Local pictograms were preferred over the American ones in all cases. Standard of education had a significant influence on interpretation, whereas no significant differences in interpretation could be attributed to cultural diversity between the African language groups. Almost all respondents (98%) reacted positively to the idea of having pictograms on their medicine labels. The success of the local pictograms highlighted the value of a rigorous and consultative design and test process. Results from one African language group can reliably be extrapolated to other groups in South Africa.
42

The Baylis-Hillman entrée to heterocyclic systems — the Rhodes contribution

Kaye, P.T. 11 1900 (has links) (PDF)
This review focuses on applications of the Baylis-Hillman reaction in the synthesis of various heterocyclic products, which include indolizines, chromenes, thiochromenes, coumarins and quinolines. Attention is also given to the mechanistic implications and the elaboration of various products to afford compounds with medicinal potential.
43

Science after a century at Rhodes University

Woods, D.R. 11 1900 (has links) (PDF)
No description available.
44

The wing coupling apparatus and the morphometric analysis of honeybee populations

Hepburn, H.R., Radloff, S.E. 11 1900 (has links) (PDF)
Significant differences between countries were found in the distribution of the number of hamuli within Apis andreniformis, A. florea, A. cerana and A. koschevnikovi. The mean hamuli numbers for Apis mellifera intermissa differed significantly among localities in Algeria. Significant differences in intercolonial variability between countries were found within A. cerana. There was no significant infraspecific variability within A. andreniformis, A. florea, A. koschevnikovi and A. m. intermissa. Significant differences in the mean number of hamuli occur between A. m. intermissa and A. andreniformis, A. florea and A. cerana; also between A. cerana/A. koschevnikovi and A. andreniformis and A. florea. Significant differences were found in the distribution and variability of the number of hamuli between species (populations). The mean numbers of hamuli for A. andreniformis differed from those of A. florea. Both these population means differed from those of A. cerana, A. koschevnikovi and A. m. intermissa. No significant differences were found between A. cerana and A. koschevnikovi. When the analysis included data for A. dorsata, A. nigrocincta, A. m. carnica, A. m. caucasica and A. m. ligustica, the results showed significant differences in hamuli numbers between A. andreniformis/A. florea and A. cerana/A. koschevnikovi/A. nigrocincta and A. m. intermissa/A. m. carnica/A. m. caucasica/A. m. ligustica. Hamuli numbers in A. dorsata significantly differed from those of other populations except A. m. intermissa. These results show that hamuli numbers are useful in the classification of honeybee populations. Whether hamuli would be useful in multivariate analysis depends on the correlation between the number of hamuli and the other characters used.
45

The relationship between leadership and internal customer satisfaction within a motor manufacturing company in Gauteng

Samuel, Glen January 2005 (has links) (PDF)
This research investigates the relationship between leadership and internal customer satisfaction, also called employee satisfaction in this document. The research is conducted within an automotive manufacturer situated in the province of Gauteng, South Africa. The Service Profit Chain forms the foundation on which this research is based as it suggests that the various factors within the service delivery system of an organisation ultimately affect the success of an organisation. From the Service Profit Chain, it is established that a factor that affects employee satisfaction is the leadership within the organisation. The Full Range Leadership Development Theory provides the backbone for analysing the leadership style of each manager by using the Multifactor Leadership Questionnaire. The company’s employee satisfaction model provides the theoretical construct against which the employee satisfaction of the managers’ subordinates is measured using the company’s employee satisfaction questionnaire. Information was gathered from the managers who rated their leadership styles as they perceived it; and from their respective subordinates who rated the managers’ leadership style as they perceived it and also their satisfaction as employees as they perceived it. Data obtained from each instrument, for the respective managers, was then statistically analysed. The reliability of the data could not be proved for some of the factors of the 2 research instruments. However, this research found a statistically significant relationship between transformational leadership and some factors of employee satisfaction, albeit a weak relationship. The null hypothesis was rejected and the alternate hypothesis accepted. A statistically significant relationship exists between leadership style and employee satisfaction levels within an automotive manufacturing organisation.
46

A democratising South Africa? : an analysis of the 2004 national election

Prudhomme, Leah Shianne January 2005 (has links) (PDF)
Two of the post apartheid elections held in South Africa (1994, 1999) have been used as mechanisms to analyse and assess the extent to which the country’s transition from apartheid to a democratic dispensation is succeeding or not. The primary analytical focus of the 1994 and 1999 elections has revolved around the nature of the party system and voting behaviour. Basically, contestation has arisen over two primary and related issues: the dominance of the African National Congress (ANC) weighed against the weakness of opposition parties and the implications that this development has for effective democratic consolidation. Also, whether voting decisions based on divisive racial and ethnic identities that underlie electoral contests are pervasive enough to derail the process of democratisation. Generally, the primary conclusion has been that the unfolding pattern of South African electoral politics indicates sufficient grounds on which to doubt the prospects for effective democratic consolidation. This dissertation engages these debates with particular reference to the 2004 elections. In contrast to this pessimistic view of the prospects of successful democratisation in South Africa it upholds through an analysis of the 2004 elections the view that there is insufficient empirical evidence, to conclude that South Africa’s democratisation process is imperiled. It maintains that although there are problems related to the to the nature of the party system and some elements of voting behaviour there is enough countervailing evidence revealed by the 2004 election results that this does not present a substantially serious threat to the prospects of South Africa attaining a democratic society.
47

The refinement of protective salinity guidelines for South African freshwater resources

Slaughter, Andrew Robert January 2005 (has links) (PDF)
South Africa is an arid country and its growing population is putting freshwater resources under increasing pressure. Natural salinization of freshwater systems is being exacerbated by anthropogenic influences. The National Water Act (No. 36 of 1998) stipulates the need for an ecological Reserve, that quantity and quality of freshwater needed to protect freshwater ecosystems while allowing sustainable use of freshwater resources. Water guidelines do exist in the form of the South African Water Quality Guidelines (DWAF, 1996) and more recently, Jooste and Rossouw (2002) compiled benchmark values for water quality variables marking the boundaries between ecological health classes in the 4-category classification system. Predominantly international toxicity data were used to compile the guidelines and the benchmark values. In addition, there is a paucity of chronic toxicity data nationally and internationally. This thesis showed that it is statistically possible to derive protective chronic endpoints for salinity from acute toxicity data through extrapolation. The Acute to Chronic Ratio (ACR), Two-Step Linear Regression (LRA) and Multi-Factor Probit Analysis (MPA) extrapolation methods were investigated to derive chronic toxicity data from acute toxicity data. The authors of LRA and MPA recommend associating a time independent LCx value in the range of LC0,01 to LC10 with a Predicted No Effect Concentration (PNOEC). In addition to published methods, this thesis studied the possibility of equating a time independent LC50 value and subjected to a safety factor of 5 (LRA LC50/5), to the PNOEC. Extrapolated chronic toxicity data where the toxicants are NaCl and Na2SO4 were derived for indigenous South African macroinvertebrates. NaCl and Na2SO4 are salts associated with salinisation in South Africa. In addition, a chronic salinity toxicity test protocol for an indigenous South African aquatic macroinvertebrate was designed and chronic toxicity test were performed using NaCl and Na2SO4 as toxicants. The experimental chronic toxicity data produced were used to validate results from the acute to chronic extrapolation methods. Extrapolated chronic toxicity data were inputted into Species Sensitivity Distribution curves, and concentrations that were predicted to protect 95 % of species (PC95) were compared to the sub-lethality benchmarks proposed by Jooste and Rossouw (2002) for NaCl and Na2SO4. This study concluded that the LRA LC50/5 extrapolation method is the most protective and accurate and proposed that LRA replace the ACR method in future guideline development for inorganic salts.
48

A decade of changes : Eastern Cape white commercial farmers' discourses of democracy

Böhmke, Werner January 2005 (has links) (PDF)
This paper deals with an analysis of the discursive accounts of Eastern Cape white commercial farmers on the subject of Democracy. Drawing on the theoretical perspectives of Social Constructionism and Discourse Analysis – which view individuals’ accounts of their realities as produced and informed by their particular social and historical context – the paper seeks to provide an analysis of the content of, and rhetorical strategies within the participants’ accounts and explanations. Such accounts of the social, historical and political circumstances in which Eastern Cape commercial farmers find themselves are thought to provide valuable insights into the manner in which the process of democratisation has been received by members of the agricultural sector. Data collection was conducted via brief, audio taped, semi-structured interviews. The participants were all white men and women, living in a commercial farming region of the Eastern Cape Province. Responses to the interviews were subjected to the Discourse Analytical procedure advanced by Ian Parker. Analyses reveal that participants are critical of the notion of democracy; utilize specific rhetorical and argumentation strategies; make use of notions and techniques of ‘Othering’; and subscribe to a colonial / patriarchal ideology which attempts to idealize pre-democratic South Africa. These findings illustrate what is in many ways still an ongoing political and ideological struggle in the rural regions of the country.
49

The evaluation of a multi-modal cognitive-behavioural approach to treating an adolescent with conduct disorder

Mashalaba, Eugenia Dudu January 2005 (has links) (PDF)
Conduct Disorder (CD) is a repetitive and persistent pattern of behaviour in which the basic rights of others or major age-appropriate societal norms or rules are violated. It is one of the most common problems in South African schools, particularly in those that are poverty-stricken. The child who participated in the study lived in the shelter that was for homeless and disadvantaged children. He attended at Amasango School where the majority of children in the shelter attended. There were many conduct-disordered children in the shelter and the school, particularly in the school. They disrupted classes making in difficult for teachers to carry out their education activities. The aim of this study was to draw on the standard procedures of the CBT in order to design interventions that would be effective in reducing aggressive behaviour in an adolescent who had CD Adolescent-Type and who lived at the shelter. This case study evaluated the effectiveness of a multi-modal CBT programme in a 16 year-old Black male who had been displaying aggressive behaviour for about a year. The treatment consisted of 23 sessions and included teacher counseling, contingency management, self-control and self-instructional training. The treatment was evaluated qualitatively by means of interviews with the child and teacher and quantitatively by means of repeated applications of behaviour checklists completed by the teacher. The results showed a decrease in the client's aggressive behaviour and an increase in prosocial behaviour. The client ultimately ceased from all aggressive behaviour towards his peers and this outcome was sustained during his last two months in therapy.
50

Power play and the changing face of English

De Klerk, V.A. January 1992 (has links) (PDF)
No description available.

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