Study of the skincalm filling process at Aspen Pharmacare applying some six sigma principles
- Authors: Marx, Johannes
- Date: 2005
- Subjects: Ointments -- Packaging , Six sigma (Quality control standard)
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10369 , http://hdl.handle.net/10948/184 , Ointments -- Packaging , Six sigma (Quality control standard)
- Description: Aspen Pharmacare is listed on the Johannesburg Securities Exchange South Africa (JSE) and is Africa’s largest pharmaceutical manufacturer. The company is a major supplier of branded pharmaceutical and healthcare products to the local and selected international markets. For decades, Aspen has manufactured a basket of affordable, quality, and effective products for the ethical, generic over-the-counter (OTC) and personal care markets. Aspen is also the leading supplier of generic medicines to the public sector, providing comprehensive coverage of the products on the Essential Drug List. Aspen continues to deliver on its commitment toward playing a role in social responsibility diseases such as HIV/AIDS, tuberculosis and malaria. In August 2003 Aspen developed Africa’s first generic anti-retroviral drug, namely Aspen-Stavudine. Aspen’s manufacturing facilities are based in Port Elizabeth (PE) and East London. Aspen has recently completed an Oral Solid Dosage (OSD) manufacturing facility worth approximately R150 million in PE. The Group manufactures approximately 20 tons of product daily and in excess of 400 tons of solid dosage pharmaceuticals, which equates to more than 2 billion tablets. In addition, more than 3 million litres of liquid pharmaceuticals and over 200 tons of pharmaceutical creams and ointments are produced per year [1]. Aspen excels at delivering quality products and services, exceeding customer expectations, complying with international standards in an environment that cultivates technical expertise and innovation. Following this philosophy through to the shop floor areas mean that there are always initiatives in continuous production improvement. One of these improvement projects introduced is called Six Sigma. 8 Ten members of the staff, selected from different expertise fields in the company were trained in Six Sigma. Knowledge gained from the two week training course were applied to different areas in the factory using Six Sigma principles. This dissertation focuses on the study undertaken in one of production areas, namely the filling process of the ointments and creams at the Aspen Port Elizabeth facility.
- Full Text:
- Date Issued: 2005
- Authors: Marx, Johannes
- Date: 2005
- Subjects: Ointments -- Packaging , Six sigma (Quality control standard)
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10369 , http://hdl.handle.net/10948/184 , Ointments -- Packaging , Six sigma (Quality control standard)
- Description: Aspen Pharmacare is listed on the Johannesburg Securities Exchange South Africa (JSE) and is Africa’s largest pharmaceutical manufacturer. The company is a major supplier of branded pharmaceutical and healthcare products to the local and selected international markets. For decades, Aspen has manufactured a basket of affordable, quality, and effective products for the ethical, generic over-the-counter (OTC) and personal care markets. Aspen is also the leading supplier of generic medicines to the public sector, providing comprehensive coverage of the products on the Essential Drug List. Aspen continues to deliver on its commitment toward playing a role in social responsibility diseases such as HIV/AIDS, tuberculosis and malaria. In August 2003 Aspen developed Africa’s first generic anti-retroviral drug, namely Aspen-Stavudine. Aspen’s manufacturing facilities are based in Port Elizabeth (PE) and East London. Aspen has recently completed an Oral Solid Dosage (OSD) manufacturing facility worth approximately R150 million in PE. The Group manufactures approximately 20 tons of product daily and in excess of 400 tons of solid dosage pharmaceuticals, which equates to more than 2 billion tablets. In addition, more than 3 million litres of liquid pharmaceuticals and over 200 tons of pharmaceutical creams and ointments are produced per year [1]. Aspen excels at delivering quality products and services, exceeding customer expectations, complying with international standards in an environment that cultivates technical expertise and innovation. Following this philosophy through to the shop floor areas mean that there are always initiatives in continuous production improvement. One of these improvement projects introduced is called Six Sigma. 8 Ten members of the staff, selected from different expertise fields in the company were trained in Six Sigma. Knowledge gained from the two week training course were applied to different areas in the factory using Six Sigma principles. This dissertation focuses on the study undertaken in one of production areas, namely the filling process of the ointments and creams at the Aspen Port Elizabeth facility.
- Full Text:
- Date Issued: 2005
Synthesis, photochemical and photophysical properties of phthalocyanine derivatives
- Authors: Maqanda, Weziwe Theorine
- Date: 2005 , 2013-06-18
- Subjects: Photochemotherapy , Phthalocyanines , Zinc , Magnesium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4436 , http://hdl.handle.net/10962/d1007472 , Photochemotherapy , Phthalocyanines , Zinc , Magnesium
- Description: Substituted zinc and magnesium phthalocyanine and porphyrazine derivatives were synthesized according to the reported procedures. The magnesium and zinc phthalocyanine and porphyrazine derivatives were synthesized by ring enlargement of subphthalocyanine and statistical condensation of the two phthalonitrile derivatives. Characterization of the complexes involved the use of infrared spectroscopy, nuclear magnetic resonance spectroscopy, ultraviolet and visible spectroscopy, and Maldi-TOF spectroscopy (for selected compounds) and elemental analysis. Photochemical and photophysical properties of the complexes in non-aqueous solution was then investigated. Photobleaching quantum yields are in order of 10⁻⁵ indicating their relative photostability. Complexes containing more electron-donating substituents were more easily oxidized. For complexes 66 and 69 (as these complexes have the same number of substituents but differ in the metal center) photobleaching quantum yield for the ZincPc complex 69 was slightly less than that of the MgPc complex 66. Singlet oxygen quantum yields of the various complexes in DMSO using diphenylisobenzofuran (DPBF) as a quencher in organic solvents were determined. Singlet oxygen quantum yields of the complexes range from 0.23 to 0.67. High values of Φ[subscript]Δ ZnPc complexes was observed compared to the corresponding MgPc, complexes. This was evidenced by complexes 66 and 69 with Φ[subscript]Δ values of Φ[subscript]Δ = 0.26 and 0.40, respectively. Varying number of phenoxy substituents, complex 71 gave significantly large value of Φ[subscript]Δ compared to 70 (that is, the presence of more electron-donating substituted group, gave higher singlet oxygen quantum yields (0 .67 and 0.25 for 71 and 70 repectively). The triplet quantum yields and triplet lifetimes were determined by laser flash photolysis for selected compounds. The triplet quantum yields increase as the number of substituents increases e.g 68 > 67 > 66. Comparing porphyrazine complexes (63, 64 and 65), 63 with benzene attached to the ring, has higher triplet state lifetime (420 μs) compared to 64 and 65 containing long alkyl chain and tertbutyl substituents, 350 and 360 μs,respectively). The observed Φ[subscript]f values for 68 and 63 were quiet suprising, since low values are observed compared to the rest of the complexes (e.g 0.03 and 0.02 respectively). Although these values seem so low, they are sufficient for fluorescence imaging applications. The Φ[subscript]f values for the complexes under study are within the range reported for complexes currently used for PDT. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
- Authors: Maqanda, Weziwe Theorine
- Date: 2005 , 2013-06-18
- Subjects: Photochemotherapy , Phthalocyanines , Zinc , Magnesium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4436 , http://hdl.handle.net/10962/d1007472 , Photochemotherapy , Phthalocyanines , Zinc , Magnesium
- Description: Substituted zinc and magnesium phthalocyanine and porphyrazine derivatives were synthesized according to the reported procedures. The magnesium and zinc phthalocyanine and porphyrazine derivatives were synthesized by ring enlargement of subphthalocyanine and statistical condensation of the two phthalonitrile derivatives. Characterization of the complexes involved the use of infrared spectroscopy, nuclear magnetic resonance spectroscopy, ultraviolet and visible spectroscopy, and Maldi-TOF spectroscopy (for selected compounds) and elemental analysis. Photochemical and photophysical properties of the complexes in non-aqueous solution was then investigated. Photobleaching quantum yields are in order of 10⁻⁵ indicating their relative photostability. Complexes containing more electron-donating substituents were more easily oxidized. For complexes 66 and 69 (as these complexes have the same number of substituents but differ in the metal center) photobleaching quantum yield for the ZincPc complex 69 was slightly less than that of the MgPc complex 66. Singlet oxygen quantum yields of the various complexes in DMSO using diphenylisobenzofuran (DPBF) as a quencher in organic solvents were determined. Singlet oxygen quantum yields of the complexes range from 0.23 to 0.67. High values of Φ[subscript]Δ ZnPc complexes was observed compared to the corresponding MgPc, complexes. This was evidenced by complexes 66 and 69 with Φ[subscript]Δ values of Φ[subscript]Δ = 0.26 and 0.40, respectively. Varying number of phenoxy substituents, complex 71 gave significantly large value of Φ[subscript]Δ compared to 70 (that is, the presence of more electron-donating substituted group, gave higher singlet oxygen quantum yields (0 .67 and 0.25 for 71 and 70 repectively). The triplet quantum yields and triplet lifetimes were determined by laser flash photolysis for selected compounds. The triplet quantum yields increase as the number of substituents increases e.g 68 > 67 > 66. Comparing porphyrazine complexes (63, 64 and 65), 63 with benzene attached to the ring, has higher triplet state lifetime (420 μs) compared to 64 and 65 containing long alkyl chain and tertbutyl substituents, 350 and 360 μs,respectively). The observed Φ[subscript]f values for 68 and 63 were quiet suprising, since low values are observed compared to the rest of the complexes (e.g 0.03 and 0.02 respectively). Although these values seem so low, they are sufficient for fluorescence imaging applications. The Φ[subscript]f values for the complexes under study are within the range reported for complexes currently used for PDT. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
Talk radio and public debate : a case study of three Ugandan radio stations
- Authors: Ogoso, Erich Opolot
- Date: 2005
- Subjects: Radio stations -- Uganda , Radio broadcasting -- Social aspects -- Uganda , Radio broadcasting -- Political aspects -- Uganda , Radio talk shows -- Uganda , Interviewing on radio -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3514 , http://hdl.handle.net/10962/d1007723 , Radio stations -- Uganda , Radio broadcasting -- Social aspects -- Uganda , Radio broadcasting -- Political aspects -- Uganda , Radio talk shows -- Uganda , Interviewing on radio -- Uganda
- Description: This study is a comparative examination of approaches to talk radio as a genre on three Ugandan radio stations. The aim is to draw conclusions, from observations made about these stations, about the potential of talk radio to encourage public debate around social issues and improve democratic participation despite pertinent challenges in Uganda. The study first outlines a theoretical framework, which is informed by Habermas's theory of the media as a 'public sphere'. This framework is applied to an exploration of traditions of talk radio that have emerged globally in order to assess the potential of these traditions to play a role in contributing to the establishment of such a 'public sphere'. The study then goes on to discuss the historical development of radio in Uganda and the establishment of the current broadcast landscape. The focus is on the way in which this history has been defined by a struggle around public expression, in which government has repeatedly sought ways to control media as a vehicle for public expression. It is proposed that Ugandan talk radio has the potential to play an important role in ensuring broad participation in public expression. It is against this background that the study then describes and analyses the development of the talk genre at three Ugandan radio stations (each one an example of, respectively, a commercial, community and public service station). It is explained that staff on all three stations emphasise the importance of talk radio in encouraging participation, by their audiences, in the public debate of social and political issues. It is argued that, because of limitations that exist within these stations, none of the talk show teams fully realize the potential of the genre for participation in such debate. The picture that emerges is one of unequal access, with those sections of radio audiences in positions of privilege being further empowered, while those on the margins remain excluded from public discussion. The study finally recommends ways to improve public participation on Ugandan talk radio, noting the need to review government support, the problems of organizational culture within the stations, the need for more guidelines on practical arrangements around talk show production and the question of contradictions that exist at policy level.
- Full Text:
- Date Issued: 2005
- Authors: Ogoso, Erich Opolot
- Date: 2005
- Subjects: Radio stations -- Uganda , Radio broadcasting -- Social aspects -- Uganda , Radio broadcasting -- Political aspects -- Uganda , Radio talk shows -- Uganda , Interviewing on radio -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3514 , http://hdl.handle.net/10962/d1007723 , Radio stations -- Uganda , Radio broadcasting -- Social aspects -- Uganda , Radio broadcasting -- Political aspects -- Uganda , Radio talk shows -- Uganda , Interviewing on radio -- Uganda
- Description: This study is a comparative examination of approaches to talk radio as a genre on three Ugandan radio stations. The aim is to draw conclusions, from observations made about these stations, about the potential of talk radio to encourage public debate around social issues and improve democratic participation despite pertinent challenges in Uganda. The study first outlines a theoretical framework, which is informed by Habermas's theory of the media as a 'public sphere'. This framework is applied to an exploration of traditions of talk radio that have emerged globally in order to assess the potential of these traditions to play a role in contributing to the establishment of such a 'public sphere'. The study then goes on to discuss the historical development of radio in Uganda and the establishment of the current broadcast landscape. The focus is on the way in which this history has been defined by a struggle around public expression, in which government has repeatedly sought ways to control media as a vehicle for public expression. It is proposed that Ugandan talk radio has the potential to play an important role in ensuring broad participation in public expression. It is against this background that the study then describes and analyses the development of the talk genre at three Ugandan radio stations (each one an example of, respectively, a commercial, community and public service station). It is explained that staff on all three stations emphasise the importance of talk radio in encouraging participation, by their audiences, in the public debate of social and political issues. It is argued that, because of limitations that exist within these stations, none of the talk show teams fully realize the potential of the genre for participation in such debate. The picture that emerges is one of unequal access, with those sections of radio audiences in positions of privilege being further empowered, while those on the margins remain excluded from public discussion. The study finally recommends ways to improve public participation on Ugandan talk radio, noting the need to review government support, the problems of organizational culture within the stations, the need for more guidelines on practical arrangements around talk show production and the question of contradictions that exist at policy level.
- Full Text:
- Date Issued: 2005
Teacher adaptation of a curriculum during implementation
- Authors: Childs, Margaret Mary
- Date: 2005
- Subjects: Curriculum change -- South Africa , Educational change -- South Africa
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:9486 , http://hdl.handle.net/10948/377 , Curriculum change -- South Africa , Educational change -- South Africa
- Description: The purpose of this study is to investigate to what extent foundation phase teachers adapt Curriculum 2005. The study was guided by two research questions: (1) What are the critical components of Curriculum 2005 (foundation phase)? (2) What are the adaptations that teachers have made in teaching this curriculum? The specific focus of this study is foundation phase teachers’ initial implementation of the revised version of Curriculum 2005, the Revised National Curriculum Statement (RNCS). An Innovation Configuration Checklist was developed identifying the critical components of the RNCS and the variations of each. Using the checklist, foundation phase teachers were surveyed to establish the adaptations being made during implementation. The findings of this study indicate that there is less active learning and more teacher directed activity than is required by the RNCS. Assessment appears to be a problem area. Most teachers understand what is expected of them in terms of assessment and attempt to put it into practice. Assessment has however, proved to be burdensome and time consuming. Teachers’ planning demonstrates a sound understanding of the procedures to be followed. Teachers do however, need support in terms of deeper pedagogical content knowledge. Although teachers comply with the technical aspects of curriculum development they neglect the emancipatory aspects of the RNCS. The situation in foundation phase classrooms might be described as one where much change is taking place, but little transformation is happening at present. Teachers are nevertheless, reflecting on how to improve their teaching and continue to explore ways to adapt and improve the RNCS.
- Full Text:
- Date Issued: 2005
- Authors: Childs, Margaret Mary
- Date: 2005
- Subjects: Curriculum change -- South Africa , Educational change -- South Africa
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:9486 , http://hdl.handle.net/10948/377 , Curriculum change -- South Africa , Educational change -- South Africa
- Description: The purpose of this study is to investigate to what extent foundation phase teachers adapt Curriculum 2005. The study was guided by two research questions: (1) What are the critical components of Curriculum 2005 (foundation phase)? (2) What are the adaptations that teachers have made in teaching this curriculum? The specific focus of this study is foundation phase teachers’ initial implementation of the revised version of Curriculum 2005, the Revised National Curriculum Statement (RNCS). An Innovation Configuration Checklist was developed identifying the critical components of the RNCS and the variations of each. Using the checklist, foundation phase teachers were surveyed to establish the adaptations being made during implementation. The findings of this study indicate that there is less active learning and more teacher directed activity than is required by the RNCS. Assessment appears to be a problem area. Most teachers understand what is expected of them in terms of assessment and attempt to put it into practice. Assessment has however, proved to be burdensome and time consuming. Teachers’ planning demonstrates a sound understanding of the procedures to be followed. Teachers do however, need support in terms of deeper pedagogical content knowledge. Although teachers comply with the technical aspects of curriculum development they neglect the emancipatory aspects of the RNCS. The situation in foundation phase classrooms might be described as one where much change is taking place, but little transformation is happening at present. Teachers are nevertheless, reflecting on how to improve their teaching and continue to explore ways to adapt and improve the RNCS.
- Full Text:
- Date Issued: 2005
Teacher receptivity of an integrated curriculum with special reference to the foundation phase of curriculum 2005
- Authors: Nthulanyane, Malefa Regina
- Date: 2005
- Subjects: Interdisciplinary approach in education -- South Africa , Primary school teachers -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Curricula
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:11011 , http://hdl.handle.net/10948/378 , Interdisciplinary approach in education -- South Africa , Primary school teachers -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Curricula
- Description: The purpose of the study was to investigate teacher receptivity of a new curriculum, in particular, the new integrated curriculum of South Africa. As the New Revised national curriculum Statement is starting to be operational this year, Curriculum 2005 was used as a model of an integrated curriculum in this study. The study focused on the following sub-problems: the meaning of an integrated curriculum; teacher receptivity of an integrated curriculum; and the extent to which teachers are receptive of the new integrated foundation phase curriculum. The review of relevant literature provided a conceptual framework for the study. Six dimensions of a curriculum that were regarded as critical in classroom practice for practicing teachers were identified and used to describe an integrated curriculum. These were: platform, learning outcomes, content, instructional materials, teaching and learning strategies and assessment. The conceptual framework for teacher receptivity was also identified by means of review of relevant literature. Teacher receptivity was conceptualised as comprising of attitudes and behavioral intentions. The empirical part of the study was undertaken to determine the attitudes of teachers towards an integrated foundation phase curriculum and the extent to which foundation phase teachers were receptive of the new curriculum. The sample for the empirical part of the study included 63 foundation phase teachers randomly selected from 21 schools in Herschel District. The schools were randomly selected from 3 zones which had been randomly selected from 7 zones that make up Hershel Educational District in the Eastern Cape, South Africa. Empirical data on teachers’ attitudes towards an integrated curriculum indicated that the majority of teachers were viewed the curriculum in an extremely positive light/somewhat positive light. There were responses which indicated that some teachers regarded the curriculum as complicated, restrictive, and idealistic. This situation is highlighted in their responses to the semantic differential on the attitude objects of the curriculum. Data on teacher receptivity indicated positive responses but vi there were some area of concern such as, for example, support from the district manager, school and the community. Data indicated that teachers were not so positive abut learning outcomes and assessment as a basis of teaching an integrated curriculum. Based on the empirical part of the study, conclusions and recommendations were made.
- Full Text:
- Date Issued: 2005
- Authors: Nthulanyane, Malefa Regina
- Date: 2005
- Subjects: Interdisciplinary approach in education -- South Africa , Primary school teachers -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Curricula
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:11011 , http://hdl.handle.net/10948/378 , Interdisciplinary approach in education -- South Africa , Primary school teachers -- South Africa -- Eastern Cape , Education, Primary -- South Africa -- Curricula
- Description: The purpose of the study was to investigate teacher receptivity of a new curriculum, in particular, the new integrated curriculum of South Africa. As the New Revised national curriculum Statement is starting to be operational this year, Curriculum 2005 was used as a model of an integrated curriculum in this study. The study focused on the following sub-problems: the meaning of an integrated curriculum; teacher receptivity of an integrated curriculum; and the extent to which teachers are receptive of the new integrated foundation phase curriculum. The review of relevant literature provided a conceptual framework for the study. Six dimensions of a curriculum that were regarded as critical in classroom practice for practicing teachers were identified and used to describe an integrated curriculum. These were: platform, learning outcomes, content, instructional materials, teaching and learning strategies and assessment. The conceptual framework for teacher receptivity was also identified by means of review of relevant literature. Teacher receptivity was conceptualised as comprising of attitudes and behavioral intentions. The empirical part of the study was undertaken to determine the attitudes of teachers towards an integrated foundation phase curriculum and the extent to which foundation phase teachers were receptive of the new curriculum. The sample for the empirical part of the study included 63 foundation phase teachers randomly selected from 21 schools in Herschel District. The schools were randomly selected from 3 zones which had been randomly selected from 7 zones that make up Hershel Educational District in the Eastern Cape, South Africa. Empirical data on teachers’ attitudes towards an integrated curriculum indicated that the majority of teachers were viewed the curriculum in an extremely positive light/somewhat positive light. There were responses which indicated that some teachers regarded the curriculum as complicated, restrictive, and idealistic. This situation is highlighted in their responses to the semantic differential on the attitude objects of the curriculum. Data on teacher receptivity indicated positive responses but vi there were some area of concern such as, for example, support from the district manager, school and the community. Data indicated that teachers were not so positive abut learning outcomes and assessment as a basis of teaching an integrated curriculum. Based on the empirical part of the study, conclusions and recommendations were made.
- Full Text:
- Date Issued: 2005
Tertiary treatment in integrated algal ponding systems
- Authors: Wells, Charles Digby
- Date: 2005
- Subjects: Sewage -- Purification -- Anaerobic treatment , Water -- Purification -- Biological treatment
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4068 , http://hdl.handle.net/10962/d1006162 , Sewage -- Purification -- Anaerobic treatment , Water -- Purification -- Biological treatment
- Description: Inadequate sanitation is one of the leading causes of water pollution and consequently illness in many underdeveloped countries, including South Africa and, specifically, the Eastern Cape Province, where cholera has become endemic. As modern wastewater treatment processes are often energy intensive and expensive, they are not suitable for use in these areas. There is thus a need to develop more sustainable wastewater treatment technologies for application in smaller communities. The integrated algal ponding system (IAPS) was identified as a possible solution to this wastewater management problem and was investigated for adaptation to local conditions, at the Rhodes University Environmental Experimental Field Station in Grahamstown, South Africa. The system was monitored over a period of nine years, with various configuration adjustments of the high rate algal pond (HRAP) unit operation investigated. Under standard operating conditions, the system was able to achieve levels of nutrient and organic removal comparable with conventional wastewater treatment works. The mean nitrate level achieved in the effluent was below the 15mg.l-1 South African discharge standard, however, nitrate removal in the IAPS was found to be inconsistent. Although the system was unable to sustain chemical oxygen demand (COD) removal to below the 75mg.l-1 South African discharge standard, a removal rate of 87% was recorded, with the residual COD remaining in the form of algal biomass. Previous studies in the Eastern Cape Province have shown that few small wastewater treatment works produce effluent that meets the microbial count specification. Therefore, in addition to the collation of IAPS data from the entire nine year monitoring period, this study also investigated the use of the HRAP as an independent unit operation for disinfection of effluent from small sewage plants. It was demonstrated that the independent high rate algal pond (IHRAP) as a free standing unit operation could consistently produce water with Escherichia coli counts of 0cfu.100ml-1. The observed effect was related to a number of possible conditions prevailing in the system, including elevated pH, sunlight and dissolved oxygen. It was also found that the IHRAP greatly enhanced the nutrient removal capabilities of the conventional IAPS, making it possible to reliably and consistently maintain phosphate and ammonium levels in the final effluent to below 5mg.l-1 and 2mg.l-1 respectively (South African discharge standards are 10mg.l-1 and 3mg.l-1 in each case). The quality of the final effluent produced by the optimisation of the IAPS would allow it to be used for irrigation, thereby providing an alternative water source in water stressed areas. The system also proved to be exceptionally robust and data collected during periods of intensive and low management regimes were broadly comparable. Results of the 9 year study have demonstrated reliable performance of the IAPS and its use an appropriate, sustainable wastewater treatment option for small communities.
- Full Text:
- Date Issued: 2005
- Authors: Wells, Charles Digby
- Date: 2005
- Subjects: Sewage -- Purification -- Anaerobic treatment , Water -- Purification -- Biological treatment
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4068 , http://hdl.handle.net/10962/d1006162 , Sewage -- Purification -- Anaerobic treatment , Water -- Purification -- Biological treatment
- Description: Inadequate sanitation is one of the leading causes of water pollution and consequently illness in many underdeveloped countries, including South Africa and, specifically, the Eastern Cape Province, where cholera has become endemic. As modern wastewater treatment processes are often energy intensive and expensive, they are not suitable for use in these areas. There is thus a need to develop more sustainable wastewater treatment technologies for application in smaller communities. The integrated algal ponding system (IAPS) was identified as a possible solution to this wastewater management problem and was investigated for adaptation to local conditions, at the Rhodes University Environmental Experimental Field Station in Grahamstown, South Africa. The system was monitored over a period of nine years, with various configuration adjustments of the high rate algal pond (HRAP) unit operation investigated. Under standard operating conditions, the system was able to achieve levels of nutrient and organic removal comparable with conventional wastewater treatment works. The mean nitrate level achieved in the effluent was below the 15mg.l-1 South African discharge standard, however, nitrate removal in the IAPS was found to be inconsistent. Although the system was unable to sustain chemical oxygen demand (COD) removal to below the 75mg.l-1 South African discharge standard, a removal rate of 87% was recorded, with the residual COD remaining in the form of algal biomass. Previous studies in the Eastern Cape Province have shown that few small wastewater treatment works produce effluent that meets the microbial count specification. Therefore, in addition to the collation of IAPS data from the entire nine year monitoring period, this study also investigated the use of the HRAP as an independent unit operation for disinfection of effluent from small sewage plants. It was demonstrated that the independent high rate algal pond (IHRAP) as a free standing unit operation could consistently produce water with Escherichia coli counts of 0cfu.100ml-1. The observed effect was related to a number of possible conditions prevailing in the system, including elevated pH, sunlight and dissolved oxygen. It was also found that the IHRAP greatly enhanced the nutrient removal capabilities of the conventional IAPS, making it possible to reliably and consistently maintain phosphate and ammonium levels in the final effluent to below 5mg.l-1 and 2mg.l-1 respectively (South African discharge standards are 10mg.l-1 and 3mg.l-1 in each case). The quality of the final effluent produced by the optimisation of the IAPS would allow it to be used for irrigation, thereby providing an alternative water source in water stressed areas. The system also proved to be exceptionally robust and data collected during periods of intensive and low management regimes were broadly comparable. Results of the 9 year study have demonstrated reliable performance of the IAPS and its use an appropriate, sustainable wastewater treatment option for small communities.
- Full Text:
- Date Issued: 2005
The application of constraint management to a simulated manufacturing environment
- Authors: Van der Merwe, Karl Robert
- Date: 2005
- Subjects: Theory of constraints (Management) , Production management , Manufacturing processes -- Computer simulation , Production engineering -- Computer simulation
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9606 , http://hdl.handle.net/10948/409 , Theory of constraints (Management) , Production management , Manufacturing processes -- Computer simulation , Production engineering -- Computer simulation
- Description: South Africa endorsed a world trade accord ratified in Geneva on December 13, 1993. To promote world economic growth, the General Agreement on Tariffs and Trade (GATT) aimed to slash duties on 8000 categories of manufactured goods. Tariff barriers have declined significantly and are now approaching trivial levels (Hill, 1999, p163). Unfortunately, South Africa is ranked near the bottom of the World Competitiveness Report (Cheales, 1995, p8). Increased foreign competition has caused many South African companies to search for techniques that will improve their overall performance. Unless these techniques can be identified and implemented timeously, some companies may fail to remain competitive. This research addresses the lack of awareness in the Eastern Cape (SA) and utilisation of two techniques used successfully in the USA (and elsewhere in developed countries) namely, Constraint Management and simulation. The overall objective was to develop a method of convincing industry management of the benefits of the two techniques. The approach adopted was to use simulation to prove Constraint Management. To achieve this objective a comprehensive literature survey was performed to determine the logic of each technique and the associated benefits. The next step was to determine the levels of awareness among industry practitioners and managers. Managers, engineers and academics were requested to complete questionnaires in order to determine awareness and utilisation of each technique as well as factors that prevented the application of both. The simulation modeling process was examined in order to verify the logic of simulation and a model of a manufacturing system was developed. Constraint Management principles were then applied to the model in a series of experiments. This process was then developed into a manual that could be used to address the lack of awareness and utilisation of both Constraint Management and simulation. The manual was tested on a group of BTech students and industry practitioners in order to establish whether its use would be effective in raising awareness, understanding and utilisation. The outcome was positive and it was established that this technique was effective.
- Full Text:
- Date Issued: 2005
- Authors: Van der Merwe, Karl Robert
- Date: 2005
- Subjects: Theory of constraints (Management) , Production management , Manufacturing processes -- Computer simulation , Production engineering -- Computer simulation
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9606 , http://hdl.handle.net/10948/409 , Theory of constraints (Management) , Production management , Manufacturing processes -- Computer simulation , Production engineering -- Computer simulation
- Description: South Africa endorsed a world trade accord ratified in Geneva on December 13, 1993. To promote world economic growth, the General Agreement on Tariffs and Trade (GATT) aimed to slash duties on 8000 categories of manufactured goods. Tariff barriers have declined significantly and are now approaching trivial levels (Hill, 1999, p163). Unfortunately, South Africa is ranked near the bottom of the World Competitiveness Report (Cheales, 1995, p8). Increased foreign competition has caused many South African companies to search for techniques that will improve their overall performance. Unless these techniques can be identified and implemented timeously, some companies may fail to remain competitive. This research addresses the lack of awareness in the Eastern Cape (SA) and utilisation of two techniques used successfully in the USA (and elsewhere in developed countries) namely, Constraint Management and simulation. The overall objective was to develop a method of convincing industry management of the benefits of the two techniques. The approach adopted was to use simulation to prove Constraint Management. To achieve this objective a comprehensive literature survey was performed to determine the logic of each technique and the associated benefits. The next step was to determine the levels of awareness among industry practitioners and managers. Managers, engineers and academics were requested to complete questionnaires in order to determine awareness and utilisation of each technique as well as factors that prevented the application of both. The simulation modeling process was examined in order to verify the logic of simulation and a model of a manufacturing system was developed. Constraint Management principles were then applied to the model in a series of experiments. This process was then developed into a manual that could be used to address the lack of awareness and utilisation of both Constraint Management and simulation. The manual was tested on a group of BTech students and industry practitioners in order to establish whether its use would be effective in raising awareness, understanding and utilisation. The outcome was positive and it was established that this technique was effective.
- Full Text:
- Date Issued: 2005
The application of the monthly time step Pitman rainfall-runoff model to the Kafue River basin of Zambia
- Mwelwa, Elenestina Mutekenya
- Authors: Mwelwa, Elenestina Mutekenya
- Date: 2005
- Subjects: Kafue River (Zambia) , Kafue Flats (Zambia) , Floodplains -- Zambia , Rain and rainfall -- Mathematical models , Runoff -- Mathematical models , Hydrology -- Mathematical models
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:6032 , http://hdl.handle.net/10962/d1006171 , Kafue River (Zambia) , Kafue Flats (Zambia) , Floodplains -- Zambia , Rain and rainfall -- Mathematical models , Runoff -- Mathematical models , Hydrology -- Mathematical models
- Description: This thesis presents a discussion on the study undertaken in the application of the monthly time step Pitman rainfall-runoff model to the Kafue River basin. The study constituted one of the initial steps in the capacity building and expansion of the application of hydrologic models in the southern African region for water resources assessment, one of the core areas of the Southern African FRIEND project (Flow Regimes from International Experimental Network Data). The research process was undertaken in four major stages, each stage working towards achieving the research objectives. The first stage was the preparation of spatial data which included the selection and delineation of sub-catchments and inclusion of spatial features required to run the Pitman model and transferring the spatial data into SPATSIM. The second stage was the preparation of input data, mainly rainfall, streamflow, evaporation, and water abstraction data. This information was then imported into SPATSIM, which was able to assist in the further preparation of data by assessment of the input data quality, linking of observed flows and spatial interpolation of point rainfall data to average catchment rainfall in readiness for running and calibration of the model. The third stage was the running and calibration of the Pitman model. Use was made of both the automatic calibration facility, as well as manual calibration by means of the time series graph display and analysis facility of SPATSIM. Model calibration was used to obtain the best fit and an acceptable correlation between the simulated and the observed flows and to obtain simulation parameter sets for sub-catchments and regions within the Kafue catchment. The fourth stage was the analysis and evaluation of the model results. This included verification of results over different time periods and validation and testing of parameter transfers to other catchments. This stage also included the evaluation of SPATSIM as a tool for applying the model and as a database for the processing and storage of water resources data. The study’s output includes: A comprehensive database of hydrometeorological, physical catchment characteristics, landuse and water abstraction information for the Kafue basin; calibrated Pitman model parameters for the sub-catchments within the Kafue basin; recommendations for future work and data collection programmes for the application of the model. The study has also built capacity by facilitating training and exposure to rainfall-runoff models (specifically the Pitman model) and associated software, SPATSIM. In addition, the dissemination of the results of this study will serve as an effective way of raising awareness on the application of the Pitman model and the use of the SPATSIM software within Zambia and the region. The overall Pitman model results were found to be satisfactory and the calibrated model is able to reproduce the observed spatial and temporal variations in streamflow characteristics in the Kafue River basin.
- Full Text:
- Date Issued: 2005
- Authors: Mwelwa, Elenestina Mutekenya
- Date: 2005
- Subjects: Kafue River (Zambia) , Kafue Flats (Zambia) , Floodplains -- Zambia , Rain and rainfall -- Mathematical models , Runoff -- Mathematical models , Hydrology -- Mathematical models
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:6032 , http://hdl.handle.net/10962/d1006171 , Kafue River (Zambia) , Kafue Flats (Zambia) , Floodplains -- Zambia , Rain and rainfall -- Mathematical models , Runoff -- Mathematical models , Hydrology -- Mathematical models
- Description: This thesis presents a discussion on the study undertaken in the application of the monthly time step Pitman rainfall-runoff model to the Kafue River basin. The study constituted one of the initial steps in the capacity building and expansion of the application of hydrologic models in the southern African region for water resources assessment, one of the core areas of the Southern African FRIEND project (Flow Regimes from International Experimental Network Data). The research process was undertaken in four major stages, each stage working towards achieving the research objectives. The first stage was the preparation of spatial data which included the selection and delineation of sub-catchments and inclusion of spatial features required to run the Pitman model and transferring the spatial data into SPATSIM. The second stage was the preparation of input data, mainly rainfall, streamflow, evaporation, and water abstraction data. This information was then imported into SPATSIM, which was able to assist in the further preparation of data by assessment of the input data quality, linking of observed flows and spatial interpolation of point rainfall data to average catchment rainfall in readiness for running and calibration of the model. The third stage was the running and calibration of the Pitman model. Use was made of both the automatic calibration facility, as well as manual calibration by means of the time series graph display and analysis facility of SPATSIM. Model calibration was used to obtain the best fit and an acceptable correlation between the simulated and the observed flows and to obtain simulation parameter sets for sub-catchments and regions within the Kafue catchment. The fourth stage was the analysis and evaluation of the model results. This included verification of results over different time periods and validation and testing of parameter transfers to other catchments. This stage also included the evaluation of SPATSIM as a tool for applying the model and as a database for the processing and storage of water resources data. The study’s output includes: A comprehensive database of hydrometeorological, physical catchment characteristics, landuse and water abstraction information for the Kafue basin; calibrated Pitman model parameters for the sub-catchments within the Kafue basin; recommendations for future work and data collection programmes for the application of the model. The study has also built capacity by facilitating training and exposure to rainfall-runoff models (specifically the Pitman model) and associated software, SPATSIM. In addition, the dissemination of the results of this study will serve as an effective way of raising awareness on the application of the Pitman model and the use of the SPATSIM software within Zambia and the region. The overall Pitman model results were found to be satisfactory and the calibrated model is able to reproduce the observed spatial and temporal variations in streamflow characteristics in the Kafue River basin.
- Full Text:
- Date Issued: 2005
The biology of suburban olive thrushes (Turdus olivaceus olivaceus) in the Eastern Cape, South Africa
- Authors: Bonnevie, Bo Tørris
- Date: 2005
- Subjects: Thrushes , Turdus , Thrushes -- South Africa -- Eastern Cape , Turdus -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5651 , http://hdl.handle.net/10962/d1005333 , Thrushes , Turdus , Thrushes -- South Africa -- Eastern Cape , Turdus -- South Africa -- Eastern Cape
- Description: This study investigated the biology of the Olive Thrush Turdus olivaceus olivaceus in Grahamstown, South Africa from 1998 to 2003. Behavioural differences between males and females, parent-young interactions, development of fledglings, and the role of song and moult in territorial behaviour were investigated. Comparisons of biometrics, moult and survival were made using Olive Thrush ringing data from other regions. There were no significant differences in mass, wing length or survival rate between the Eastern and Western Cape provinces, but primary wing moult started earlier in the Western Cape and coincided with the end of the main breeding periods in both provinces. Both males and females of breeding pairs remained in and defended their territories throughout the year, but there was some evidence that territorial defence was strongest during the breeding periods. Roughly, every 100 eggs laid produce 50 fledglings. Out of these 20 to 30 reach the age of independence at approximately 50 days, and only five of these juvenile birds reach maturity. Adult survival was estimated at 80%, with a mean life expectancy of 4.5 years and a conservative estimate of maximum lifespan of 11 years. Using ringing data and museum specimens, the Olive Thrush was compared with the Karoo Thrush Turdus smithi, a former race of the Olive Thrush. Olive Thrushes had shorter bills and wings, but were heavier than Karoo Thrushes from the Cradock district. There were also differences in bill and eye-ring colouration between these populations. No morphological differences were found between the sexes in either species.
- Full Text:
- Date Issued: 2005
- Authors: Bonnevie, Bo Tørris
- Date: 2005
- Subjects: Thrushes , Turdus , Thrushes -- South Africa -- Eastern Cape , Turdus -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5651 , http://hdl.handle.net/10962/d1005333 , Thrushes , Turdus , Thrushes -- South Africa -- Eastern Cape , Turdus -- South Africa -- Eastern Cape
- Description: This study investigated the biology of the Olive Thrush Turdus olivaceus olivaceus in Grahamstown, South Africa from 1998 to 2003. Behavioural differences between males and females, parent-young interactions, development of fledglings, and the role of song and moult in territorial behaviour were investigated. Comparisons of biometrics, moult and survival were made using Olive Thrush ringing data from other regions. There were no significant differences in mass, wing length or survival rate between the Eastern and Western Cape provinces, but primary wing moult started earlier in the Western Cape and coincided with the end of the main breeding periods in both provinces. Both males and females of breeding pairs remained in and defended their territories throughout the year, but there was some evidence that territorial defence was strongest during the breeding periods. Roughly, every 100 eggs laid produce 50 fledglings. Out of these 20 to 30 reach the age of independence at approximately 50 days, and only five of these juvenile birds reach maturity. Adult survival was estimated at 80%, with a mean life expectancy of 4.5 years and a conservative estimate of maximum lifespan of 11 years. Using ringing data and museum specimens, the Olive Thrush was compared with the Karoo Thrush Turdus smithi, a former race of the Olive Thrush. Olive Thrushes had shorter bills and wings, but were heavier than Karoo Thrushes from the Cradock district. There were also differences in bill and eye-ring colouration between these populations. No morphological differences were found between the sexes in either species.
- Full Text:
- Date Issued: 2005
The contribution of the Labour Court to the development of strike law
- Nengovhela, Livhuwani Adolphus
- Authors: Nengovhela, Livhuwani Adolphus
- Date: 2005
- Subjects: Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Labor courts -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10191 , http://hdl.handle.net/10948/430 , Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Labor courts -- South Africa
- Description: The Labour Relations Act 66 of 1995 brought a number of changes in the labour relations environment from its inception on 11 November 1996. The Act codified Industrial Court decisions that were already established under the strike-law jurisprudence from the Labour Relations Act 28 of 1956. These general changes to the law also impact on the strike-law regime. The purpose of this paper is to give an overview of the contributions made by the Labour Courts1 in developing strike law from the inception of the Act. The Labour Courts have made a number of decisions that have helped in clarifying the provisions of the Act. One should hasten to say that this has never been a smooth process by the courts. It will further be shown in this paper that some of the court decisions were not well accepted in the light of other considerations, such as the Constitution and the previous Industrial Court decisions. On some occasions the Constitutional Court had to intervene in order to clarify the intention of the legislature. For the purpose of effectively dealing with this topic, I shall briefly give the historical context of strike law in the form of common-law position, and the strike-law position before the Bill of Rights and the Constitution. I shall then endeavour to identify the legislative provision of the Act when it comes to strike-law provisions, at the same time identifying the important court decisions that were made.
- Full Text:
- Date Issued: 2005
- Authors: Nengovhela, Livhuwani Adolphus
- Date: 2005
- Subjects: Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Labor courts -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10191 , http://hdl.handle.net/10948/430 , Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Labor courts -- South Africa
- Description: The Labour Relations Act 66 of 1995 brought a number of changes in the labour relations environment from its inception on 11 November 1996. The Act codified Industrial Court decisions that were already established under the strike-law jurisprudence from the Labour Relations Act 28 of 1956. These general changes to the law also impact on the strike-law regime. The purpose of this paper is to give an overview of the contributions made by the Labour Courts1 in developing strike law from the inception of the Act. The Labour Courts have made a number of decisions that have helped in clarifying the provisions of the Act. One should hasten to say that this has never been a smooth process by the courts. It will further be shown in this paper that some of the court decisions were not well accepted in the light of other considerations, such as the Constitution and the previous Industrial Court decisions. On some occasions the Constitutional Court had to intervene in order to clarify the intention of the legislature. For the purpose of effectively dealing with this topic, I shall briefly give the historical context of strike law in the form of common-law position, and the strike-law position before the Bill of Rights and the Constitution. I shall then endeavour to identify the legislative provision of the Act when it comes to strike-law provisions, at the same time identifying the important court decisions that were made.
- Full Text:
- Date Issued: 2005
The current role of modern portfolio theory in asset management practice in South Africa
- Authors: Garaba, Masimba
- Date: 2005
- Subjects: Portfolio management -- South Africa , Investments -- South Africa , Bank investments -- Mathematical models , Capital assets pricing model , Asset -- Liability management , Money market -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:965 , http://hdl.handle.net/10962/d1002699 , Portfolio management -- South Africa , Investments -- South Africa , Bank investments -- Mathematical models , Capital assets pricing model , Asset -- Liability management , Money market -- South Africa
- Description: This research examines the role that modern portfolio theory (MPT) plays in current South Africa asset management practice in comparison to other portfolio management techniques and security evaluation methods. The purpose of asset management is to pool complementary financial market expertise, in order to generate returns in excess of the market return on the investments of the owners of financial resources that are entrusted to the firm, since the owners of financial resources might not be able to make superior investment decisions on their own. The research presents and discusses the literature pertaining to modern portfolio theory, traditional portfolio theory (fundamental and technical analyses), and behavioural finance theory. The implication of the efficient market hypothesis in relation to all the portfolio management theories is also presented and discussed. In line with a positivist paradigm, the survey research methodology, which combines both qualitative and quantitative aspects, was adopted. The instrument used for data collection was a questionnaire, which was found to be reliable and valid for this research. The questionnaire encompassed the Lickert scale to measure the data. The results of the analysis were interpreted using descriptive statistics. The results of this research suggest that modern portfolio theory does not play a significant role in the management of portfolios and security evaluation in South Africa. South African asset managers regard fundamental analysis as the most significant method of security evaluation in the management of portfolios. Technical analysis and econometric models are regarded as playing a moderate role and complement fundamental analysis whilst behavioural finance models play the least role. This research recommends an integrated portfolio management strategy that incorporates MPT, traditional portfolio theory and behavioural finance models to enhance investor value and protection.
- Full Text:
- Date Issued: 2005
- Authors: Garaba, Masimba
- Date: 2005
- Subjects: Portfolio management -- South Africa , Investments -- South Africa , Bank investments -- Mathematical models , Capital assets pricing model , Asset -- Liability management , Money market -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:965 , http://hdl.handle.net/10962/d1002699 , Portfolio management -- South Africa , Investments -- South Africa , Bank investments -- Mathematical models , Capital assets pricing model , Asset -- Liability management , Money market -- South Africa
- Description: This research examines the role that modern portfolio theory (MPT) plays in current South Africa asset management practice in comparison to other portfolio management techniques and security evaluation methods. The purpose of asset management is to pool complementary financial market expertise, in order to generate returns in excess of the market return on the investments of the owners of financial resources that are entrusted to the firm, since the owners of financial resources might not be able to make superior investment decisions on their own. The research presents and discusses the literature pertaining to modern portfolio theory, traditional portfolio theory (fundamental and technical analyses), and behavioural finance theory. The implication of the efficient market hypothesis in relation to all the portfolio management theories is also presented and discussed. In line with a positivist paradigm, the survey research methodology, which combines both qualitative and quantitative aspects, was adopted. The instrument used for data collection was a questionnaire, which was found to be reliable and valid for this research. The questionnaire encompassed the Lickert scale to measure the data. The results of the analysis were interpreted using descriptive statistics. The results of this research suggest that modern portfolio theory does not play a significant role in the management of portfolios and security evaluation in South Africa. South African asset managers regard fundamental analysis as the most significant method of security evaluation in the management of portfolios. Technical analysis and econometric models are regarded as playing a moderate role and complement fundamental analysis whilst behavioural finance models play the least role. This research recommends an integrated portfolio management strategy that incorporates MPT, traditional portfolio theory and behavioural finance models to enhance investor value and protection.
- Full Text:
- Date Issued: 2005
The development and implementation of a performance management system: a case study
- Whittington-Jones, Alexandra
- Authors: Whittington-Jones, Alexandra
- Date: 2005
- Subjects: Public Service Accountability Monitor (South Africa) Non-governmental organizations -- South Africa -- Evaluation Performance -- Management -- Case studies Organizational effectiveness -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:738 , http://hdl.handle.net/10962/d1003858
- Description: After a review of the literature relevant to performance management systems both over time and across different types of organizations, this thesis confines its research to a case study of the development and implementation of a performance management system in a non-governmental organization (NGO), the Public Service Accountability Monitor (PSAM). Collation of the relevant data is followed by a discussion of the development and implementation of the performance management system at the PSAM over a 5-year period from 1 June 1999 to 31 May 2004. This is considered in terms of the PSAM’s achievement of commitments to Funders and the concurrent development of the performance management system. Next an analysis of major themes that emerged from the research, in terms of important items for consideration in the development and implementation of a performance management system in an NGO, and areas for possible future improvements to the system is presented. After analyzing the relevant information, it became apparent that the performance management system has no direct bearing on the ability of the PSAM to achieve its stated commitment to Funders. However, these short-term focused expectations of the performance management system are outweighed by the positive contributions that have been made by its introduction, specifically in the area of training and development. This important aspect of capacity building and staff empowerment speaks to the long term sustainability of the organization. Although the PSAM’s performance management system undergoes continual improvement, significant inroads have been made into providing a sensible, clear and dynamic solution to the problem of rewarding efficient and effective performance. The PSAM has indeed benefited from the introduction of the performance management system in a number of ways. It is evident that these benefits could be applicable to other NGOs.
- Full Text:
- Date Issued: 2005
- Authors: Whittington-Jones, Alexandra
- Date: 2005
- Subjects: Public Service Accountability Monitor (South Africa) Non-governmental organizations -- South Africa -- Evaluation Performance -- Management -- Case studies Organizational effectiveness -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:738 , http://hdl.handle.net/10962/d1003858
- Description: After a review of the literature relevant to performance management systems both over time and across different types of organizations, this thesis confines its research to a case study of the development and implementation of a performance management system in a non-governmental organization (NGO), the Public Service Accountability Monitor (PSAM). Collation of the relevant data is followed by a discussion of the development and implementation of the performance management system at the PSAM over a 5-year period from 1 June 1999 to 31 May 2004. This is considered in terms of the PSAM’s achievement of commitments to Funders and the concurrent development of the performance management system. Next an analysis of major themes that emerged from the research, in terms of important items for consideration in the development and implementation of a performance management system in an NGO, and areas for possible future improvements to the system is presented. After analyzing the relevant information, it became apparent that the performance management system has no direct bearing on the ability of the PSAM to achieve its stated commitment to Funders. However, these short-term focused expectations of the performance management system are outweighed by the positive contributions that have been made by its introduction, specifically in the area of training and development. This important aspect of capacity building and staff empowerment speaks to the long term sustainability of the organization. Although the PSAM’s performance management system undergoes continual improvement, significant inroads have been made into providing a sensible, clear and dynamic solution to the problem of rewarding efficient and effective performance. The PSAM has indeed benefited from the introduction of the performance management system in a number of ways. It is evident that these benefits could be applicable to other NGOs.
- Full Text:
- Date Issued: 2005
The development of a strategy for the successful implementation and management of technology for Valor Fruit Processors (Pty) Ltd
- Authors: Olivier, Riaan
- Date: 2005
- Subjects: Technology -- Management , Citrus fruit industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9268 , http://hdl.handle.net/10948/158 , Technology -- Management , Citrus fruit industry -- South Africa -- Port Elizabeth
- Description: In an ever-changing environment, it has become difficult for organisation to create and maintain a competitive advantage. Nowhere is it more evident than in the manufacturing industry. For organisations to be successful, it is imperative for them to have a clear and well-defined strategy. This strategy should be viewed as the steering mechanism of the organisation. With the ever-increasing demands of customers, organisations have been forced to be agile in order to adapt to sudden changes. Now more than ever, technology can be used as a powerful tool. For organisations to be profitable and grow, they need to have a management team that is competent to manage the organisation in turbulent times. To ensure a competitive advantage, management must be able to predict the future needs of the organisation. The use of technology forecasting and technology audits can assist management in addressing this process. Most organisations are technology intensive and deliver products or services. The research attempts to determine a strategy for the successful implementation and management of technology in a manufacturing organisation. It also tries to establish the impact of technology auditing on the competitive advantage of the organisation. A comprehensive technological audit questionnaire was used in conducting an audit at Valor Fruit Processors (Pty) Ltd. It must be emphasised that this model is a generic model and should be customised to suit each particular organisation.
- Full Text:
- Date Issued: 2005
- Authors: Olivier, Riaan
- Date: 2005
- Subjects: Technology -- Management , Citrus fruit industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9268 , http://hdl.handle.net/10948/158 , Technology -- Management , Citrus fruit industry -- South Africa -- Port Elizabeth
- Description: In an ever-changing environment, it has become difficult for organisation to create and maintain a competitive advantage. Nowhere is it more evident than in the manufacturing industry. For organisations to be successful, it is imperative for them to have a clear and well-defined strategy. This strategy should be viewed as the steering mechanism of the organisation. With the ever-increasing demands of customers, organisations have been forced to be agile in order to adapt to sudden changes. Now more than ever, technology can be used as a powerful tool. For organisations to be profitable and grow, they need to have a management team that is competent to manage the organisation in turbulent times. To ensure a competitive advantage, management must be able to predict the future needs of the organisation. The use of technology forecasting and technology audits can assist management in addressing this process. Most organisations are technology intensive and deliver products or services. The research attempts to determine a strategy for the successful implementation and management of technology in a manufacturing organisation. It also tries to establish the impact of technology auditing on the competitive advantage of the organisation. A comprehensive technological audit questionnaire was used in conducting an audit at Valor Fruit Processors (Pty) Ltd. It must be emphasised that this model is a generic model and should be customised to suit each particular organisation.
- Full Text:
- Date Issued: 2005
The development of an integrated management model for occupational health and safety in medical institutions
- Authors: Du Toit, Willem Johannes
- Date: 2005
- Subjects: Industrial safety -- South Africa -- Management , Industrial hygiene -- South Africa -- Management , Health facilities -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8551 , http://hdl.handle.net/10948/1300 , Industrial safety -- South Africa -- Management , Industrial hygiene -- South Africa -- Management , Health facilities -- South Africa
- Description: Health and safety management forms part of the overall risk management of medical institutions, and deals with the responsibility of an organisation to provide a risk free environment for all who are exposed to the activities of such medical institutions. Affected people include health care workers, contractors, visitors, and patients. Medical institutions, and hospitals specifically, are uniquely distinct from other industries in that they employ highly skilled staff with specific specialised knowledge. These institutions are also increasingly making use of complex technology that requires specialist staff to operate medical machines and equipment. These specific aspects are accounted for in this research. The overall purpose of this research is to determine the need for an alternative approach to the management of health and safety in medical institutions. An appropriate model will be developed that can be integrated into the existing health and safety management system. The research methodology for this study comprises the following steps: Firstly, the health and safety environment was researched in relation to all stakeholders, external and internal, that are affected by medical institutions’ activities. The effect of these activities, and how it influences health and safety management, was evaluated in a South African context. Secondly, the overall risk management approach of medical institutions and the effect of organisational culture were researched to determine the effect on health and safety performance. Thirdly, a questionnaire was sent to selected staff of five hospitals in the Eastern and Western Cape to determine their perception and experience of health and safety management. Quantitative data on incidents in Netcare Hospitals were obtained, and a comparison of the questionnaire studies was done to determine the need for a health and safety model. The final step of this study entailed the development of a health and safety model using legislative requirements and the needs identified in the research. A proposal is made to integrate specialist functions and departments into the existing health and safety management system, in order to strengthen the managerial capabilities of such a system. The importance of improving the safety and compliance culture is indicated.
- Full Text:
- Date Issued: 2005
- Authors: Du Toit, Willem Johannes
- Date: 2005
- Subjects: Industrial safety -- South Africa -- Management , Industrial hygiene -- South Africa -- Management , Health facilities -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8551 , http://hdl.handle.net/10948/1300 , Industrial safety -- South Africa -- Management , Industrial hygiene -- South Africa -- Management , Health facilities -- South Africa
- Description: Health and safety management forms part of the overall risk management of medical institutions, and deals with the responsibility of an organisation to provide a risk free environment for all who are exposed to the activities of such medical institutions. Affected people include health care workers, contractors, visitors, and patients. Medical institutions, and hospitals specifically, are uniquely distinct from other industries in that they employ highly skilled staff with specific specialised knowledge. These institutions are also increasingly making use of complex technology that requires specialist staff to operate medical machines and equipment. These specific aspects are accounted for in this research. The overall purpose of this research is to determine the need for an alternative approach to the management of health and safety in medical institutions. An appropriate model will be developed that can be integrated into the existing health and safety management system. The research methodology for this study comprises the following steps: Firstly, the health and safety environment was researched in relation to all stakeholders, external and internal, that are affected by medical institutions’ activities. The effect of these activities, and how it influences health and safety management, was evaluated in a South African context. Secondly, the overall risk management approach of medical institutions and the effect of organisational culture were researched to determine the effect on health and safety performance. Thirdly, a questionnaire was sent to selected staff of five hospitals in the Eastern and Western Cape to determine their perception and experience of health and safety management. Quantitative data on incidents in Netcare Hospitals were obtained, and a comparison of the questionnaire studies was done to determine the need for a health and safety model. The final step of this study entailed the development of a health and safety model using legislative requirements and the needs identified in the research. A proposal is made to integrate specialist functions and departments into the existing health and safety management system, in order to strengthen the managerial capabilities of such a system. The importance of improving the safety and compliance culture is indicated.
- Full Text:
- Date Issued: 2005
The development of independent contractors within the Working for Water Programme over a twenty-four month period : a programme evaluation : Western region, Eastern Cape
- Authors: Knipe, Andrew
- Date: 2005
- Subjects: Working for Water Programme Contractors -- South Africa Construction contracts -- South Africa Business enterprises, Black -- South Africa Employee empowerment -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:799 , http://hdl.handle.net/10962/d1004916
- Description: This research is concerned with the development of independent contractors within the Working for Water Programme over a twenty-four month period. The meaningful participation of previously disadvantaged South Africans fall within the ambit of black economic empowerment. The Government Gazette (1997: No. 1820) defines black economic empowerment as a deliberate programme to achieve the meaningful participation of disadvantaged South Africans in the mainstream economy as managers, owners of capital and employees. The purpose of this research was to evaluate the contractors within the Western Region of the Eastern Cape, in order to assess how they have developed as independent contractors within the developmental framework provided by the Working for Water Programme. This developmental framework takes place over a 462-day period or roughly 24 months. The evaluation aimed to determine whether the two-year development period sufficiently prepared contractors for competition in the open market and if contractors had acquired the necessary skills to run a successful business. A formative programme evaluation was used as a tool of analysis to identify areas of weakness and establish priorities for improvement. A qualitative research approach was followed, guided by an adapted version of the Context, Input, Process and Product approach to evaluation (Parlett and Hamilton cited in Calder, 1995, p.25). Using structured interviews comprising of closed and open ended questions, data was gathered from thirty contractors, five managers and one Senior Executive Officer within the Western Region of the Eastern Cape. An interview was also conducted with the Regional Programme leader of the Eastern Cape. Further data collection techniques included documentary research. Data was analysed using qualitative data analysis techniques described by Thorne (1997, p.118), as relying on inductive reasoning to interpret and structure the meanings that can be derived from the data. Passages of interest were marked so that the data could be reduced to a manageable size as described by Seidman (1991, p.91-1 01) and various categories were developed that had commonalties and thematic connections. The Working for Water Programme aims to exit contractors successfully after a twenty-four month developmental period. The Working for Water Programme has formalised its development framework through a training matrix in which the required training at contractor level is outlined. The finding of the research is that the current contractor development programme do not adequately prepare contractors for independence and entrepreneurship in a competitive market. There is no co-ordinated development of predetermined skills. Contractors are not able to articulate what their plans are after exit from the WFW Programme. No concrete evidence of actively pursuing alternative contract opportunities was evident from contractors who were about to exit the Programme and there is no person to champion the cause of meaningful post exit opportunities. The main recommendations from this research are that contractors be selected via an application system rather that appointment through steering committees. Selected contractors must be medically fit and at least have a matriculation certificate. Contractors should be assessed on a 6-monthly basis and contractors not achieving a minimum competency level must be removed from the programme. Managers should also have basic competency levels in order to facilitate skill transfer through a mentorship process. The charge out rate of equipment should be revised every six months. The charge out rates should also be increased significantly to cater for the harsh conditions under which contractors are operational. A "champion" needs to be appointed which will actively seek exit opportunities for trained contractors. This person will also seek to develop functional partnerships with various private and government institutions to create opportunities for exited contractors.
- Full Text:
- Date Issued: 2005
- Authors: Knipe, Andrew
- Date: 2005
- Subjects: Working for Water Programme Contractors -- South Africa Construction contracts -- South Africa Business enterprises, Black -- South Africa Employee empowerment -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:799 , http://hdl.handle.net/10962/d1004916
- Description: This research is concerned with the development of independent contractors within the Working for Water Programme over a twenty-four month period. The meaningful participation of previously disadvantaged South Africans fall within the ambit of black economic empowerment. The Government Gazette (1997: No. 1820) defines black economic empowerment as a deliberate programme to achieve the meaningful participation of disadvantaged South Africans in the mainstream economy as managers, owners of capital and employees. The purpose of this research was to evaluate the contractors within the Western Region of the Eastern Cape, in order to assess how they have developed as independent contractors within the developmental framework provided by the Working for Water Programme. This developmental framework takes place over a 462-day period or roughly 24 months. The evaluation aimed to determine whether the two-year development period sufficiently prepared contractors for competition in the open market and if contractors had acquired the necessary skills to run a successful business. A formative programme evaluation was used as a tool of analysis to identify areas of weakness and establish priorities for improvement. A qualitative research approach was followed, guided by an adapted version of the Context, Input, Process and Product approach to evaluation (Parlett and Hamilton cited in Calder, 1995, p.25). Using structured interviews comprising of closed and open ended questions, data was gathered from thirty contractors, five managers and one Senior Executive Officer within the Western Region of the Eastern Cape. An interview was also conducted with the Regional Programme leader of the Eastern Cape. Further data collection techniques included documentary research. Data was analysed using qualitative data analysis techniques described by Thorne (1997, p.118), as relying on inductive reasoning to interpret and structure the meanings that can be derived from the data. Passages of interest were marked so that the data could be reduced to a manageable size as described by Seidman (1991, p.91-1 01) and various categories were developed that had commonalties and thematic connections. The Working for Water Programme aims to exit contractors successfully after a twenty-four month developmental period. The Working for Water Programme has formalised its development framework through a training matrix in which the required training at contractor level is outlined. The finding of the research is that the current contractor development programme do not adequately prepare contractors for independence and entrepreneurship in a competitive market. There is no co-ordinated development of predetermined skills. Contractors are not able to articulate what their plans are after exit from the WFW Programme. No concrete evidence of actively pursuing alternative contract opportunities was evident from contractors who were about to exit the Programme and there is no person to champion the cause of meaningful post exit opportunities. The main recommendations from this research are that contractors be selected via an application system rather that appointment through steering committees. Selected contractors must be medically fit and at least have a matriculation certificate. Contractors should be assessed on a 6-monthly basis and contractors not achieving a minimum competency level must be removed from the programme. Managers should also have basic competency levels in order to facilitate skill transfer through a mentorship process. The charge out rate of equipment should be revised every six months. The charge out rates should also be increased significantly to cater for the harsh conditions under which contractors are operational. A "champion" needs to be appointed which will actively seek exit opportunities for trained contractors. This person will also seek to develop functional partnerships with various private and government institutions to create opportunities for exited contractors.
- Full Text:
- Date Issued: 2005
The development of the emerging technologies sustainability assessment (ETSA) and its application in the design of a bioprocess for the treatment of wine distillery effluent
- Authors: Khan, Nuraan
- Date: 2005
- Subjects: Technology assessment , Wine and wine making -- Waste disposal , Distilleries -- Waste disposal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3953 , http://hdl.handle.net/10962/d1004012 , Technology assessment , Wine and wine making -- Waste disposal , Distilleries -- Waste disposal
- Description: Emerging Technologies Sustainability Assessment (ETSA) is a new technology assessment tool that was developed in order to compare emerging processes or technologies to existing alternatives. It utilizes infoIDlation modules, with the minimum use of resources such as time and money, in order to deteIDline if the process under development is comparatively favourable and should be developed beyond the early conceptual phase. The preliminary ETSA is vital in order to identify the gaps in the existing information and the specific methodologies to be used for data capture and analysis. The use of experimental design tools, such as Design-Expert, can facilitate rapid and efficient collection of necessary data and fits in well with the rationale for the ETSA. Wine distillery effluent (vinasse) is the residue left after alcohol has been distilled from fennented grape juice. It is an acidic, darkly coloured effluent, with a high COD and polyphenol content. The most popular method of disposal of this effluent, land application, is no longer viable due to stricter legislation and pressure on the industry to better manage its wastes. Although the ability of whiterot fungi to degrade a number of pollutants is well-known, fungal treatment of wine distillery effluent is still in the conceptual phase. The perfoIDlance of the fungal remediation system was assessed experimentally in terms of COD removal and laccase production using Design-Expert. Although Pycnoporus sanguine us was found to be most efficient at COD removal (85%) from 30% vinasse, laccase production was low (0.021 U/I). The optimum design for economically viable fungal treatment used Trametespubescens. This fungus was able to remove over 50% of the COD from undiluted vinasse while producing almost 800U/l of the valuable laccase enzyme within three days. Since the effluent from the fungal system did not meet the legal limits for wastewater disposal, a two-stage aerobicanaerobic system is suggested to improve the quality of the effluent prior to disposal. The ETSA was used to assess the fungal technology in relation to the two current methods of vinasse treatment and disposal, namely land application and anaerobic digestion. Based on the ETSA, which considered environmental, social and economic impacts, the fungal system proved to be potentially competitive and further development of the technology is suggested.
- Full Text:
- Date Issued: 2005
- Authors: Khan, Nuraan
- Date: 2005
- Subjects: Technology assessment , Wine and wine making -- Waste disposal , Distilleries -- Waste disposal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3953 , http://hdl.handle.net/10962/d1004012 , Technology assessment , Wine and wine making -- Waste disposal , Distilleries -- Waste disposal
- Description: Emerging Technologies Sustainability Assessment (ETSA) is a new technology assessment tool that was developed in order to compare emerging processes or technologies to existing alternatives. It utilizes infoIDlation modules, with the minimum use of resources such as time and money, in order to deteIDline if the process under development is comparatively favourable and should be developed beyond the early conceptual phase. The preliminary ETSA is vital in order to identify the gaps in the existing information and the specific methodologies to be used for data capture and analysis. The use of experimental design tools, such as Design-Expert, can facilitate rapid and efficient collection of necessary data and fits in well with the rationale for the ETSA. Wine distillery effluent (vinasse) is the residue left after alcohol has been distilled from fennented grape juice. It is an acidic, darkly coloured effluent, with a high COD and polyphenol content. The most popular method of disposal of this effluent, land application, is no longer viable due to stricter legislation and pressure on the industry to better manage its wastes. Although the ability of whiterot fungi to degrade a number of pollutants is well-known, fungal treatment of wine distillery effluent is still in the conceptual phase. The perfoIDlance of the fungal remediation system was assessed experimentally in terms of COD removal and laccase production using Design-Expert. Although Pycnoporus sanguine us was found to be most efficient at COD removal (85%) from 30% vinasse, laccase production was low (0.021 U/I). The optimum design for economically viable fungal treatment used Trametespubescens. This fungus was able to remove over 50% of the COD from undiluted vinasse while producing almost 800U/l of the valuable laccase enzyme within three days. Since the effluent from the fungal system did not meet the legal limits for wastewater disposal, a two-stage aerobicanaerobic system is suggested to improve the quality of the effluent prior to disposal. The ETSA was used to assess the fungal technology in relation to the two current methods of vinasse treatment and disposal, namely land application and anaerobic digestion. Based on the ETSA, which considered environmental, social and economic impacts, the fungal system proved to be potentially competitive and further development of the technology is suggested.
- Full Text:
- Date Issued: 2005
The direction of trade and its implications for labour in South Africa
- Authors: Cameron, Iona R
- Date: 2005
- Subjects: Labor demand -- South Africa , Labor market -- South Africa , Industrial relations -- South Africa , Foreign trade and employment -- South Africa , International economic relations , Free trade -- South Africa , South Africa -- Commercial policy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:948 , http://hdl.handle.net/10962/d1002682 , Labor demand -- South Africa , Labor market -- South Africa , Industrial relations -- South Africa , Foreign trade and employment -- South Africa , International economic relations , Free trade -- South Africa , South Africa -- Commercial policy
- Description: This aim of this thesis is to analyse the demand for labour from trade with a selection of South Africa’s trading partners. It is expected that labour demand will be greater in trade with developed blocs. Trade between developing blocs, however, is thought to be more skilled labour intensive and such trade should have greater linkages. This ought to feed through into greater labour demand so that South-South trade may be more ‘labour creating’ than expected. As it is more skill intensive, it may also be more dynamic, which has implications for future growth and development. Factor content methodology is used to assess labour demand. Calculations consider linkages to other sectors (which will increase labour demand) and the use of scarce resources (which has an opportunity cost to labour). The findings support the claim that trade with developing blocs is more professional labour intensive. Evidence that it may be more dynamic and have greater linkages to labour is borne out in exports to SADC. Greater labour demand through linkages, however, is not evident in net trade to SADC. Neither are they of significance in trade with any of the other developing blocs so labour effects due to linkages appear to be negligible. The advantages of South-South trade may rather lie in the dynamic benefits that trade in higher technology goods provides. When scarce resources such as capital and professional labour are taken into account, it is found that labour demand is negative in net trade to all blocs. However, even without the problem of scarce resources, most blocs have a negative demand for labour in net trade. The indication is that with the present trade patterns, South Africa cannot expect trade to increase labour demand. Policy which could improve this situation would be to increase labour force skills, improve the flexibility of the labour market and develop sectors which are both more advanced as well as labour intensive. Despite the negative impact of trade on labour in general, it is found that trade does differ by direction and that for each labour type there are certain blocs where labour demand is positive. This is also the case in net trade for particular sectors. Such information could be used as part of a targeted trade policy to assist in the marketing of particular sectors in trade and also for increasing labour demand for certain labour groups.
- Full Text:
- Date Issued: 2005
- Authors: Cameron, Iona R
- Date: 2005
- Subjects: Labor demand -- South Africa , Labor market -- South Africa , Industrial relations -- South Africa , Foreign trade and employment -- South Africa , International economic relations , Free trade -- South Africa , South Africa -- Commercial policy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:948 , http://hdl.handle.net/10962/d1002682 , Labor demand -- South Africa , Labor market -- South Africa , Industrial relations -- South Africa , Foreign trade and employment -- South Africa , International economic relations , Free trade -- South Africa , South Africa -- Commercial policy
- Description: This aim of this thesis is to analyse the demand for labour from trade with a selection of South Africa’s trading partners. It is expected that labour demand will be greater in trade with developed blocs. Trade between developing blocs, however, is thought to be more skilled labour intensive and such trade should have greater linkages. This ought to feed through into greater labour demand so that South-South trade may be more ‘labour creating’ than expected. As it is more skill intensive, it may also be more dynamic, which has implications for future growth and development. Factor content methodology is used to assess labour demand. Calculations consider linkages to other sectors (which will increase labour demand) and the use of scarce resources (which has an opportunity cost to labour). The findings support the claim that trade with developing blocs is more professional labour intensive. Evidence that it may be more dynamic and have greater linkages to labour is borne out in exports to SADC. Greater labour demand through linkages, however, is not evident in net trade to SADC. Neither are they of significance in trade with any of the other developing blocs so labour effects due to linkages appear to be negligible. The advantages of South-South trade may rather lie in the dynamic benefits that trade in higher technology goods provides. When scarce resources such as capital and professional labour are taken into account, it is found that labour demand is negative in net trade to all blocs. However, even without the problem of scarce resources, most blocs have a negative demand for labour in net trade. The indication is that with the present trade patterns, South Africa cannot expect trade to increase labour demand. Policy which could improve this situation would be to increase labour force skills, improve the flexibility of the labour market and develop sectors which are both more advanced as well as labour intensive. Despite the negative impact of trade on labour in general, it is found that trade does differ by direction and that for each labour type there are certain blocs where labour demand is positive. This is also the case in net trade for particular sectors. Such information could be used as part of a targeted trade policy to assist in the marketing of particular sectors in trade and also for increasing labour demand for certain labour groups.
- Full Text:
- Date Issued: 2005
The effect of new teaching methods in chemistry on the foundation certificate learners' results
- Authors: Nagel, Lilian Estelle
- Date: 2005
- Subjects: Chemistry -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10787 , http://hdl.handle.net/10948/162 , Chemistry -- Study and teaching (Higher)
- Description: This study investigated possible alternative Chemistry teaching methods to improve the learning and thus the pass rate of the learners of access programmes at the Port Elizabeth Technikon. The study traced Chemistry learning from the Pre-Technician course to the present Science Foundation Certificate. Since the latter programme is a new course with new criteria, only implemented since the beginning of 2003, it provided a suitable platform for the evaluation and updating, if necessary, of new teaching methods. The study was limited to the subject of Chemistry. The participating learners in this qualitative research were fully informed of the objectives of this research and, for ethical reasons, their identities were protected. The methodology chosen was action research, which will include discussions regarding the choice, necessity and value of the research method. The following tools were used to collect data to determine approaches to learning and how the examination results were influenced: Questionnaires; Journal entries of students; Interviews; Data of examination results.
- Full Text:
- Date Issued: 2005
- Authors: Nagel, Lilian Estelle
- Date: 2005
- Subjects: Chemistry -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10787 , http://hdl.handle.net/10948/162 , Chemistry -- Study and teaching (Higher)
- Description: This study investigated possible alternative Chemistry teaching methods to improve the learning and thus the pass rate of the learners of access programmes at the Port Elizabeth Technikon. The study traced Chemistry learning from the Pre-Technician course to the present Science Foundation Certificate. Since the latter programme is a new course with new criteria, only implemented since the beginning of 2003, it provided a suitable platform for the evaluation and updating, if necessary, of new teaching methods. The study was limited to the subject of Chemistry. The participating learners in this qualitative research were fully informed of the objectives of this research and, for ethical reasons, their identities were protected. The methodology chosen was action research, which will include discussions regarding the choice, necessity and value of the research method. The following tools were used to collect data to determine approaches to learning and how the examination results were influenced: Questionnaires; Journal entries of students; Interviews; Data of examination results.
- Full Text:
- Date Issued: 2005
The effect of personalised adjustments to computer workstations on the efficiency and physical comfort of computer operators
- Authors: James, Genevieve
- Date: 2005
- Subjects: Human engineering , Engineering design , Work environment , Microcomputer workstations -- Health aspects , Occupational diseases -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5112 , http://hdl.handle.net/10962/d1005190 , Human engineering , Engineering design , Work environment , Microcomputer workstations -- Health aspects , Occupational diseases -- Prevention
- Description: The present study sought to investigate the effects of a Standard workstation, designed for “average” users, on an anthropometrically diverse sample of computer operators, and to assess whether physical and perceptual responses, as well as performance efficiency were dependent on stature. Further investigation assessed the influence of personalised adjustments to the Standard workstation, based on the anthropometric characteristics of the subjects, as well as the introduction of a custom-designed ‘floating’ wrist support, on subject responses. All subjects (n=30) were tested in each of the three workstations: Standard, Personalised and Wrist Support. For analysis of responses in the Standard workstation, subjects were divided into three groups depending on their stature: Short (<1650mm), Medium (1650mm to 1800mm), Tall (>1800mm). The musculoskeletal responses indicated that Tall subjects were forced to adopt the most awkward general body postures as a result of the low computer screen. However, the low screen allowed for the Short subjects to adopt the most natural general body postures, although levels of muscular activity in the upper trapezius suggest that the muscular load imposed on both Short and Tall subjects was significantly greater than that imposed on the Medium subjects. In addition, the Medium subjects’ perceptions of the Standard workstation dimensions support the fact that this workstation was better suited to users with “average” morphologies. The responses elicited in the Personalised and Wrist Support workstations were improved significantly when compared to the Standard workstation. Joint angles were more natural, upper trapezius EMG was reduced, standard of performance improved and perceptual responses indicated a diminished incidence of body and visual discomfort, as well as greater perceived satisfaction with these workstation dimensions. The improved physical responses suggest a decrease in the risk of developing cumulative trauma disorders. Although subjects were unaccustomed to the wrist support device, this workstation demonstrated a further reduction in the range of wrist angles, as well as a general positive attitude towards the concept.
- Full Text:
- Date Issued: 2005
- Authors: James, Genevieve
- Date: 2005
- Subjects: Human engineering , Engineering design , Work environment , Microcomputer workstations -- Health aspects , Occupational diseases -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5112 , http://hdl.handle.net/10962/d1005190 , Human engineering , Engineering design , Work environment , Microcomputer workstations -- Health aspects , Occupational diseases -- Prevention
- Description: The present study sought to investigate the effects of a Standard workstation, designed for “average” users, on an anthropometrically diverse sample of computer operators, and to assess whether physical and perceptual responses, as well as performance efficiency were dependent on stature. Further investigation assessed the influence of personalised adjustments to the Standard workstation, based on the anthropometric characteristics of the subjects, as well as the introduction of a custom-designed ‘floating’ wrist support, on subject responses. All subjects (n=30) were tested in each of the three workstations: Standard, Personalised and Wrist Support. For analysis of responses in the Standard workstation, subjects were divided into three groups depending on their stature: Short (<1650mm), Medium (1650mm to 1800mm), Tall (>1800mm). The musculoskeletal responses indicated that Tall subjects were forced to adopt the most awkward general body postures as a result of the low computer screen. However, the low screen allowed for the Short subjects to adopt the most natural general body postures, although levels of muscular activity in the upper trapezius suggest that the muscular load imposed on both Short and Tall subjects was significantly greater than that imposed on the Medium subjects. In addition, the Medium subjects’ perceptions of the Standard workstation dimensions support the fact that this workstation was better suited to users with “average” morphologies. The responses elicited in the Personalised and Wrist Support workstations were improved significantly when compared to the Standard workstation. Joint angles were more natural, upper trapezius EMG was reduced, standard of performance improved and perceptual responses indicated a diminished incidence of body and visual discomfort, as well as greater perceived satisfaction with these workstation dimensions. The improved physical responses suggest a decrease in the risk of developing cumulative trauma disorders. Although subjects were unaccustomed to the wrist support device, this workstation demonstrated a further reduction in the range of wrist angles, as well as a general positive attitude towards the concept.
- Full Text:
- Date Issued: 2005
The effects of goat kraal manure, sewage sludge and effective microorganisms on the composting of pine bark and the nutritional value of the composts
- Authors: Mupondi, Lushian Tapiwa
- Date: 2005
- Subjects: Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Language: English
- Type: Thesis , Masters , MSc Agric (Soil Science)
- Identifier: vital:11171 , http://hdl.handle.net/10353/d1001008 , Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Full Text: false
- Date Issued: 2005
- Authors: Mupondi, Lushian Tapiwa
- Date: 2005
- Subjects: Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Language: English
- Type: Thesis , Masters , MSc Agric (Soil Science)
- Identifier: vital:11171 , http://hdl.handle.net/10353/d1001008 , Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Full Text: false
- Date Issued: 2005