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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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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.
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| 1 |
Quantification of potential elemental impact of a munitions production and testing facility on its immediate surroundings / Unique Janse van RensburgJanse van Rensburg, Unique January 2010 (has links)
The study attempted to quantify the elemental concentrations and possible accumulation levels in the antelope's organ tissue at Rheinmetal Denel Munitions (RDM), as well as to correlate the findings with the surrounding environment. To achieve this, the elemental concentrations within the kidney, liver and lung tissue of the antelope, and environmental factors such as the soil, vegetation and waterholes were quantified. STATISTICA was used to determine meaningful differences between variables and Canoco to determine the relationship between the different datasets. PCA analyses of the vegetation confirmed that the natural slope at RDM could have contributed to the distribution and variation of the elemental concentration. It became apparent that positive associations existed between the liver tissue and the K, the kidney tissue and Ni and Cd, and the lung tissue had a positive association with Mg, Mn, V, Rb and Co elemental concentrations. It became evident in this study that the elemental concentrations of Al and Ni were higher in the liver and kidney tissue of the antelope than the recommended concentration for livestock (Puls, 1994). The elemental concentration of Al, Ca, Fe and Mn also exceeded the recommended elemental concentration for livestock, in the water sampled at RDM (Puls, 1994). Four distinct areas were identified within the study area, the area above the factory, the area under the factory, the testing area and the area under the factory. Significant differences between the testing area and the area under the factory were found regarding the Tl, Ag, Hg and B elemental concentrations in the vegetation. Furthermore, it became apparent that the amount of precipitation could have contributed to the variation of the elemental concentrations and distribution in the study area as well as in the organ tissue of the antelope. / Thesis (M.Sc. (Environmental Science and Management))--North-West University, Potchefstroom Campus, 2011.
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Work–life balance policies : the use of flexitime within a South African organisation / C.F. DownesDownes, Caroline Frances January 2011 (has links)
Work–life balance is one of the most central issues and concerns for 21st century societies, and
according to the American Psychological Association balancing work and family is one of the
major challenges for the current generation of employees. Helping employees balance their work
and family life is viewed as a social and business imperative since work–life imbalance
experienced by employees negatively impacts on employers and society as a whole. Evidence
from a study of international employers indicates significant increases in the implementation and
use of workplace flexibility, more commonly known as flexitime, as a work–life balance policy.
Research into the use and implementation of flexitime within South Africa is limited, especially
with regard to the aspects that influence the use of flexitime as well as the associated benefits,
challenges and consequences for both South African employees and organisations.
Consequently, organisations are left to design, implement and manage their own flexitime
policies, with very little information or guidance available to ensure employee and organisational
benefit.
In this study, a qualitative research design with an exploratory approach was used to explore and
describe employees? perceptions regarding the implementation of flexitime. A non–probability
purposive, voluntary sample of 15 participants was taken from the offices of an international
auditing and consulting organisation located in Johannesburg. Data was collected by means of
semi–structured individual interviews and the verbatim transcripts were analysed by means of
content analysis. Seven themes were extracted from the interviews, namely: variations in the use of flexitime;
factors influencing the use of flexitime; challenges relating to the use of flexitime; perceptions
regarding the use of flexitime; required aspects for the effective use of flexitime; consequences
relating to the use of flexitime; and the benefits resulting from the use of flexitime.
Organisations should be made more aware of the individual as well as organisational benefits,
challenges and consequences of flexitime as highlighted in this research. When implementing
such policies, specific required aspects for the effective use of flexitime should be taken in
consideration. Organisations interested in successfully implementing flexitime for the benefit of
both the employee and organisation are advised to consider the findings of this study and take
heed of the critical findings presented. Efforts should be made to accommodate employee
preferences regarding their use of flexitime. Organisations should be alert to the potential
challenges, consequences and negative perceptions surrounding flexitime and, consequently, the
importance of ensuring that prerequisites or those aspects required for the implementation of
flexitime are in place and perceptions relating to the policy are managed. / Thesis (M.Com. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2011.
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| 3 |
Quantification of potential elemental impact of a munitions production and testing facility on its immediate surroundings / Unique Janse van RensburgJanse van Rensburg, Unique January 2010 (has links)
The study attempted to quantify the elemental concentrations and possible accumulation levels in the antelope's organ tissue at Rheinmetal Denel Munitions (RDM), as well as to correlate the findings with the surrounding environment. To achieve this, the elemental concentrations within the kidney, liver and lung tissue of the antelope, and environmental factors such as the soil, vegetation and waterholes were quantified. STATISTICA was used to determine meaningful differences between variables and Canoco to determine the relationship between the different datasets. PCA analyses of the vegetation confirmed that the natural slope at RDM could have contributed to the distribution and variation of the elemental concentration. It became apparent that positive associations existed between the liver tissue and the K, the kidney tissue and Ni and Cd, and the lung tissue had a positive association with Mg, Mn, V, Rb and Co elemental concentrations. It became evident in this study that the elemental concentrations of Al and Ni were higher in the liver and kidney tissue of the antelope than the recommended concentration for livestock (Puls, 1994). The elemental concentration of Al, Ca, Fe and Mn also exceeded the recommended elemental concentration for livestock, in the water sampled at RDM (Puls, 1994). Four distinct areas were identified within the study area, the area above the factory, the area under the factory, the testing area and the area under the factory. Significant differences between the testing area and the area under the factory were found regarding the Tl, Ag, Hg and B elemental concentrations in the vegetation. Furthermore, it became apparent that the amount of precipitation could have contributed to the variation of the elemental concentrations and distribution in the study area as well as in the organ tissue of the antelope. / Thesis (M.Sc. (Environmental Science and Management))--North-West University, Potchefstroom Campus, 2011.
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| 4 |
Work–life balance policies : the use of flexitime within a South African organisation / C.F. DownesDownes, Caroline Frances January 2011 (has links)
Work–life balance is one of the most central issues and concerns for 21st century societies, and
according to the American Psychological Association balancing work and family is one of the
major challenges for the current generation of employees. Helping employees balance their work
and family life is viewed as a social and business imperative since work–life imbalance
experienced by employees negatively impacts on employers and society as a whole. Evidence
from a study of international employers indicates significant increases in the implementation and
use of workplace flexibility, more commonly known as flexitime, as a work–life balance policy.
Research into the use and implementation of flexitime within South Africa is limited, especially
with regard to the aspects that influence the use of flexitime as well as the associated benefits,
challenges and consequences for both South African employees and organisations.
Consequently, organisations are left to design, implement and manage their own flexitime
policies, with very little information or guidance available to ensure employee and organisational
benefit.
In this study, a qualitative research design with an exploratory approach was used to explore and
describe employees? perceptions regarding the implementation of flexitime. A non–probability
purposive, voluntary sample of 15 participants was taken from the offices of an international
auditing and consulting organisation located in Johannesburg. Data was collected by means of
semi–structured individual interviews and the verbatim transcripts were analysed by means of
content analysis. Seven themes were extracted from the interviews, namely: variations in the use of flexitime;
factors influencing the use of flexitime; challenges relating to the use of flexitime; perceptions
regarding the use of flexitime; required aspects for the effective use of flexitime; consequences
relating to the use of flexitime; and the benefits resulting from the use of flexitime.
Organisations should be made more aware of the individual as well as organisational benefits,
challenges and consequences of flexitime as highlighted in this research. When implementing
such policies, specific required aspects for the effective use of flexitime should be taken in
consideration. Organisations interested in successfully implementing flexitime for the benefit of
both the employee and organisation are advised to consider the findings of this study and take
heed of the critical findings presented. Efforts should be made to accommodate employee
preferences regarding their use of flexitime. Organisations should be alert to the potential
challenges, consequences and negative perceptions surrounding flexitime and, consequently, the
importance of ensuring that prerequisites or those aspects required for the implementation of
flexitime are in place and perceptions relating to the policy are managed. / Thesis (M.Com. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2011.
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Site-specificity in The educators new clothes by Mark Rautenbach / Mošomo ya bokgabo ya ka lefelong le itšego ka go bkogabo bjo bo bitšwago The educators new clothes ka Mark Rautenbach / Plekspesifisiteit in The educator's new clothes deur Mark RautenbachCloete, Zelda 12 1900 (has links)
Text in English, with summaries and keywords in English, Sesotho and Afrikaans / This study is an enquiry into how The educator’s new clothes by Mark
Rautenbach is an example of site-specific art. The aim is to demonstrate how boundaries in TENC become blurred between site-specific performance, other art forms, and every-day activities. The key concepts explored are: Rautenbach’s approach to the concept of site, the connections that develop between his performance and each site that he travels to; his use of the art gallery and viewer participation. Through literature study relevant theory is explored, and several arguments are applied in a selective manner to my analysis of TENC. Various International and South African site-specific artworks are discussed as an indication of how site-specificity can be applied in alternative ways. In October 2017 I installed GREENER?, a site-specific exhibition in the UNISA Art gallery. The works on the show underline the theoretical findings and highlight the flexible application of theory relating to site-specificity. / Dinyakišišo tše ke phatišišo mabapi le seo se dirago bokgabo bja The
educator’s new clothes (TENC) ka Mark Rautenbach go ba mohlala wa
bokgabo bja lefelong le itšego. Maikemišetšo ke go laetša ka fao ka go
TENC mellwane magareng ga mošomo wa ka lefelong le mehuta ye
mengwe ya bokgabo le mediro ya ka mehla di thomago go se sa bonagala gabotse. Mareo ao a šomišwago ke: mokgwa wa Rautenbach go kgopolo ya lefelo, dikgokagano tše di hlamegago magareng ga phethagatšo ya ya gagwe ya mošomo le lefelo le lengwe le le lengwe leo a yago go lona, tšhomišo ya gagwe ya kalari ya tša bokgabo le go kgatha tema ga babogedi.
Ka go diriša dingwalwa teori ya maleba e a utollwa, gomme dintlha tše
mmalwa di a dirišwa ka mokgwa wa go kgetha go tshekatsheko ya ka ya TENC. Mešomo ya bokgabo ya ka lefelong le itšego ya mehutahuta e a ahlaahlwa bjalo ka kutollo ya ka fao bokgabo bja ka mafelong bo ka
dirišwago ka ditsela tše dingwe. Ka Oktoboro 2017 ke hlomile GREENER?, e lego pontšho ya bokgabo ya ka lefelong le itšego, ka Kalaring ya Bokgabo ya ka Unisa. Mešomo ye e bontšhitšwego e laeditše dikutollo tša teori le go laetša tirišo ye e fetogago ya teori mabapi le mešomo ya bokgabo ya ka lefelong le itšego. / Hierdie studie behels ʼn ondersoek na wat van The educator’s new clothes (TENC) deur Mark Rautenbach plekspesifieke kuns maak. Die oogmerk is om aan te toon hoe die grense tussen plekspesifieke uitvoering, ander kunsvorme en daaglikse bedrywighede vervaag. Die kernkonsepte wat verken word, is Rautenbach se beskouing van die konsep van plek, die verband tussen sy uitvoering en elke plek waarheen hy reis, sy aanwending van ʼn kunsgalery, en kykerdeelname. Die tersaaklike teorie word aan die hand van ʼn literatuurstudie verken, en ʼn aantal argumente word op selektiewe wyse op my ontleding van TENC toegepas. Verskeie internasionale en Suid-Afrikaanse plekspesifieke kunswerke word bespreek as ʼn verkenning van hoe plekspesifisiteit op ander maniere toegepas word.
Ek het in Oktober 2017 ʼn plekspesifieke uitstalling met die titel GREENER? in die Unisa Kunsgalery gehou. Die werke wat uitgestal is, onderstreep die teoretiese bevindings en vestig die aandag op die buigsame toepassing van die teorie in verband met plekspesifisiteit. / Art History, Visual Arts and Musicology / M.V.A.
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