"Is more, less?" : insect-insect interactions in a biological control context using water hyacinth as a model
- Weyl, Philip Sebastian Richard
- Authors: Weyl, Philip Sebastian Richard
- Date: 2012
- Subjects: Water hyacinth -- South Africa -- Eastern Cape , Water hyacinth -- Biological control -- South Africa -- Eastern Cape , Insects as biological pest control agents , Miridae -- South Africa -- Eastern Cape , Beetles -- South Africa -- Eastern Cape , Competition (Biology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5724 , http://hdl.handle.net/10962/d1005410 , Water hyacinth -- South Africa -- Eastern Cape , Water hyacinth -- Biological control -- South Africa -- Eastern Cape , Insects as biological pest control agents , Miridae -- South Africa -- Eastern Cape , Beetles -- South Africa -- Eastern Cape , Competition (Biology)
- Description: Interactions between insects have been shown to be important regulators of population abundances and dynamics as well as drivers of spatial segregation and distribution. These are important aspects of the ecology of insects used in biological control and may have implications for the overall success of a particular programme. In the history of biological control there has been a tendency to release a suite of agents against a weed, which in some cases has increased the level of success, while in others little change has been observed. In most of these cases the implications of increasing the level of complexity of the system is not taken into account and there is little research on the effect of releasing another agent into the system. A brief meta-analysis was done on all the biological control programmes initiated in South Africa. Emphasis was placed on multi-species releases and the effects that overlapping niches were having on the number of agents responsible for the success of a programme. Where overlapping niches were present among agents released the number of agents responsible for success was lower than the number established. Water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach in South Africa has more arthropod agents released against it than anywhere else in the world, yet control has been variable. If the biology and host utilisation of all the agents against water hyacinth is considered, a definite overlap of niches is apparent in at least one life stage of all the agents. Therefore the probability of these insects interacting is high, especially if they are established at the same site in the field. Three of the insects released in South Africa have been selected to investigate possible interactions. They are Neochetina eichhorniae Warner, Neochetina bruchi Hustache and Eccritotarsus catarinensis (Carvalho). Y-tube olfactometer bioassays were used to measure responses of these insects to water hyacinth with prior feeding damage by either conspecifics or heterospecifics. This was done to determine whether olfactory cues played a role in host acceptability and avoidance of conspecifics or heterospecifics. The insects were given a choice between damaged and undamaged plants in various combinations. There was a significant preference for the undamaged plants when given a choice between undamaged and damaged plants. However when the insects were given a choice between two damaged plants there was no discrimination between heterospecific or conspecific damaged plants. This may indicate that there is little or no ecological cost for the insect to share a plant with other insects utilising a similar resource. Insect – insect interactions were investigated in a common garden plot experiment to measure the impact that pairwise combinations of the insect may have on their performance. There was a significant interaction between the mirid E. catarinensis and the weevil N. eichhorniae, with the weevil not performing as well when in combination with the mirid than when alone. Interestingly there was a negative interaction between the two weevil species when in combination, however it was impossible to determine which species was being affected if not both. None of the insects performed significantly better when in combination with another insect. A field study on Wriggleswade Dam in the Eastern Cape, South Africa was initiated to determine whether the relationship between the mirid E. catarinensis and the weevil N. eichhorniae could be determined in the field. The performance of the insects at the different sites in the field suggests that there was an interaction between the agents. This interaction did not limit the establishment of either insect at a site, but it did result in one insect dominating at a site over another. Interactions between the three species of insect tested in this thesis suggest that there are both negative and neutral relationships between them. A basic comparison between the insect performances from 15 sites around the country was done to determine if the spatial segregation observed in the field could be extrapolated to the natural South African situation. The interaction observed between N. eichhorniae and E. catarinensis does seem to extrapolate to the general South African situation where there is definite spatial segregation on a landscape level. The co–occurrence of the two Neochetina weevils at these sites suggests that the negative relationship observed between them in the common garden experiment does not extrapolate to the field. The results from this thesis suggest that the interactions between the agents tested would not limit establishment or have significant ramifications on performance. However, there may be spatial and temporal segregation of these species in the introduced range.
- Full Text:
- Date Issued: 2012
- Authors: Weyl, Philip Sebastian Richard
- Date: 2012
- Subjects: Water hyacinth -- South Africa -- Eastern Cape , Water hyacinth -- Biological control -- South Africa -- Eastern Cape , Insects as biological pest control agents , Miridae -- South Africa -- Eastern Cape , Beetles -- South Africa -- Eastern Cape , Competition (Biology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5724 , http://hdl.handle.net/10962/d1005410 , Water hyacinth -- South Africa -- Eastern Cape , Water hyacinth -- Biological control -- South Africa -- Eastern Cape , Insects as biological pest control agents , Miridae -- South Africa -- Eastern Cape , Beetles -- South Africa -- Eastern Cape , Competition (Biology)
- Description: Interactions between insects have been shown to be important regulators of population abundances and dynamics as well as drivers of spatial segregation and distribution. These are important aspects of the ecology of insects used in biological control and may have implications for the overall success of a particular programme. In the history of biological control there has been a tendency to release a suite of agents against a weed, which in some cases has increased the level of success, while in others little change has been observed. In most of these cases the implications of increasing the level of complexity of the system is not taken into account and there is little research on the effect of releasing another agent into the system. A brief meta-analysis was done on all the biological control programmes initiated in South Africa. Emphasis was placed on multi-species releases and the effects that overlapping niches were having on the number of agents responsible for the success of a programme. Where overlapping niches were present among agents released the number of agents responsible for success was lower than the number established. Water hyacinth, Eichhornia crassipes (Martius) Solms-Laubach in South Africa has more arthropod agents released against it than anywhere else in the world, yet control has been variable. If the biology and host utilisation of all the agents against water hyacinth is considered, a definite overlap of niches is apparent in at least one life stage of all the agents. Therefore the probability of these insects interacting is high, especially if they are established at the same site in the field. Three of the insects released in South Africa have been selected to investigate possible interactions. They are Neochetina eichhorniae Warner, Neochetina bruchi Hustache and Eccritotarsus catarinensis (Carvalho). Y-tube olfactometer bioassays were used to measure responses of these insects to water hyacinth with prior feeding damage by either conspecifics or heterospecifics. This was done to determine whether olfactory cues played a role in host acceptability and avoidance of conspecifics or heterospecifics. The insects were given a choice between damaged and undamaged plants in various combinations. There was a significant preference for the undamaged plants when given a choice between undamaged and damaged plants. However when the insects were given a choice between two damaged plants there was no discrimination between heterospecific or conspecific damaged plants. This may indicate that there is little or no ecological cost for the insect to share a plant with other insects utilising a similar resource. Insect – insect interactions were investigated in a common garden plot experiment to measure the impact that pairwise combinations of the insect may have on their performance. There was a significant interaction between the mirid E. catarinensis and the weevil N. eichhorniae, with the weevil not performing as well when in combination with the mirid than when alone. Interestingly there was a negative interaction between the two weevil species when in combination, however it was impossible to determine which species was being affected if not both. None of the insects performed significantly better when in combination with another insect. A field study on Wriggleswade Dam in the Eastern Cape, South Africa was initiated to determine whether the relationship between the mirid E. catarinensis and the weevil N. eichhorniae could be determined in the field. The performance of the insects at the different sites in the field suggests that there was an interaction between the agents. This interaction did not limit the establishment of either insect at a site, but it did result in one insect dominating at a site over another. Interactions between the three species of insect tested in this thesis suggest that there are both negative and neutral relationships between them. A basic comparison between the insect performances from 15 sites around the country was done to determine if the spatial segregation observed in the field could be extrapolated to the natural South African situation. The interaction observed between N. eichhorniae and E. catarinensis does seem to extrapolate to the general South African situation where there is definite spatial segregation on a landscape level. The co–occurrence of the two Neochetina weevils at these sites suggests that the negative relationship observed between them in the common garden experiment does not extrapolate to the field. The results from this thesis suggest that the interactions between the agents tested would not limit establishment or have significant ramifications on performance. However, there may be spatial and temporal segregation of these species in the introduced range.
- Full Text:
- Date Issued: 2012
'Becoming citizens': young people making sense of citizenship on a South African community radio station youth show
- Karamagi, Sharon Benna Kyakyo
- Authors: Karamagi, Sharon Benna Kyakyo
- Date: 2012
- Subjects: Citizenship -- Study and teaching -- South Africa Youth -- Social conditions Community radio -- South Africa -- Grahamstown Grahamstown (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3444 , http://hdl.handle.net/10962/d1002898
- Description: This research set out to investigate the role that community radio can potentially play as a space in which young people engage with their own role as citizens and, in so doing, participate in discussions that seek to address social problems in a community divided by class, income, gender and race. The study examines how a local community radio station - Radio Grahamstown - developed a youth programme Y4Yin which the producers of the show and its audience came together to negotiate the meaning of citizenship. The study examines whether this interactive programme was able to function as something like a public sphere where in young people were able to develop a greater sense of agency, at least in the realm of citizenship. Using evidence gathered through focus group discussions with a group of young school-going leamers, interviews conducted with the producers of the show Y4Y, and drawing on Dahlgren's elaboration of a functional public sphere, the research concludes that the show provided a useful platform for Grahamstown high school students to develop their own notions of citizenship and to, at least partially and tentatively, build some 'bridges' across the vectors of socio-economic division in the town. However, the research also concludes that the Y4Y producers often failed to use a mode of address contemporary to the youth and often did not use production techniques congruent with young people's cultural tastes. This limited the programme's appeal and its potential as an enabler of discussion about notions of citizenship and as a platform for social bridging. In addition, because of the producers' control over the choice of topics put up for discussion, open interaction was more limited than could have been expected. In addition, the study also concludes that various limitations to the leamers' freedom of expression (including their fear that teachers might be listening in to the shows) inhibited the programme's role as a deliberative public sphere where issues could be aired, common ground found, and solutions discussed.
- Full Text:
- Date Issued: 2012
- Authors: Karamagi, Sharon Benna Kyakyo
- Date: 2012
- Subjects: Citizenship -- Study and teaching -- South Africa Youth -- Social conditions Community radio -- South Africa -- Grahamstown Grahamstown (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3444 , http://hdl.handle.net/10962/d1002898
- Description: This research set out to investigate the role that community radio can potentially play as a space in which young people engage with their own role as citizens and, in so doing, participate in discussions that seek to address social problems in a community divided by class, income, gender and race. The study examines how a local community radio station - Radio Grahamstown - developed a youth programme Y4Yin which the producers of the show and its audience came together to negotiate the meaning of citizenship. The study examines whether this interactive programme was able to function as something like a public sphere where in young people were able to develop a greater sense of agency, at least in the realm of citizenship. Using evidence gathered through focus group discussions with a group of young school-going leamers, interviews conducted with the producers of the show Y4Y, and drawing on Dahlgren's elaboration of a functional public sphere, the research concludes that the show provided a useful platform for Grahamstown high school students to develop their own notions of citizenship and to, at least partially and tentatively, build some 'bridges' across the vectors of socio-economic division in the town. However, the research also concludes that the Y4Y producers often failed to use a mode of address contemporary to the youth and often did not use production techniques congruent with young people's cultural tastes. This limited the programme's appeal and its potential as an enabler of discussion about notions of citizenship and as a platform for social bridging. In addition, because of the producers' control over the choice of topics put up for discussion, open interaction was more limited than could have been expected. In addition, the study also concludes that various limitations to the leamers' freedom of expression (including their fear that teachers might be listening in to the shows) inhibited the programme's role as a deliberative public sphere where issues could be aired, common ground found, and solutions discussed.
- Full Text:
- Date Issued: 2012
A baculovirus-mediated expression system for the analysis of HaSV RNA packaging
- Authors: Mendes, Adriano
- Date: 2012
- Subjects: RNA , Baculoviruses , Helicoverpa armigera , Plasmids
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4025 , http://hdl.handle.net/10962/d1004085 , RNA , Baculoviruses , Helicoverpa armigera , Plasmids
- Description: The Helicoverpa armigera stunt virus (HaSV) is a member of a family of small nonenveloped (+) ssRNA insect viruses currently known as the Tetraviridae. This family is unique in terms of the T=4 quasi-symmetry of its capsid particles and the unusually narrow host range and tissue tropism. Assembly of tetraviral particles has been well characterised and involves the combination of 240 copies of a single capsid precursor protein (VCap) into a procapsid followed by autoproteolytic cleavage to yield the major (β) and minor (γ) capsid subunits within the mature particle. HaSV has two genomic RNAs, RNA 1 encoding the replicase and RNA 2 encoding VCap and p17, the ORF of which lies upstream of and overlaping with the 5’ end of the VCap ORF. Prior to this study, Vlok (2009) used a plasmid expression system to study RNA packaging in HaSV VLPs assembled in Spodoptera frugiperda 9 (Sf9) cells co-expressing p17 and VCap. The study showed that the p17 ORF was required for the packaging of RNA 2 during capsid assembly but it was unclear whether p17 expression was required for packaging. In addition, expression from the transfected plasmids was sub-optimal affecting both the yield of VLPs and the detection of p17. The aim of this study was to use the plasmid system to test whether p17 expression was required for plasmid-derived VLP RNA packaging and then develop a baculovirus-mediated system to test this hypothesis. By using a plasmid in which the start codon of p17 was mutated, it was shown that p17 expression was required for RNA 2 packaging into plasmid-VLPs. For the baculovirus system, four recombinant baculoviruses based upon the pFastBac Dual expression system, were constructed. These included Bac20, expressing wild type RNA 2, Bac21, RNA 2 with p17 silenced, Bac23, RNA 2 and p17 expressed on a separate transcript and Bac24, RNA 2 with p17 silenced plus p17 expressed on a separate transcript. Assembly of VLPs was more efficient using the baculovirus expression system and p17 expression was observed in cells infected with Bac20, Bac23 and Bac24, but not Bac21. In contrast to the plasmid-VLPs, bac-VLPs did not require p17 for the encapsidation of RNA 2. In addition to RNA 2, Bac23 and Bac24 packaged the p17 mRNA transcribed separately from RNA 2. This insinuated that bac-VLPs may be packaging RNA non-selectively. It was proposed that p17 may play a role in packaging in an RNA-limiting environment (plasmid system) but functioned differently when viral RNA was in excess (baculovirus system). This data points to the importance of developing a replication system for the analysis of the packaging pathways of these viruses and this study has laid down the foundations for such a system in which RNA 1 and RNA 2 can be introduced into a single cell by means of a single recombinant virus.
- Full Text:
- Date Issued: 2012
- Authors: Mendes, Adriano
- Date: 2012
- Subjects: RNA , Baculoviruses , Helicoverpa armigera , Plasmids
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4025 , http://hdl.handle.net/10962/d1004085 , RNA , Baculoviruses , Helicoverpa armigera , Plasmids
- Description: The Helicoverpa armigera stunt virus (HaSV) is a member of a family of small nonenveloped (+) ssRNA insect viruses currently known as the Tetraviridae. This family is unique in terms of the T=4 quasi-symmetry of its capsid particles and the unusually narrow host range and tissue tropism. Assembly of tetraviral particles has been well characterised and involves the combination of 240 copies of a single capsid precursor protein (VCap) into a procapsid followed by autoproteolytic cleavage to yield the major (β) and minor (γ) capsid subunits within the mature particle. HaSV has two genomic RNAs, RNA 1 encoding the replicase and RNA 2 encoding VCap and p17, the ORF of which lies upstream of and overlaping with the 5’ end of the VCap ORF. Prior to this study, Vlok (2009) used a plasmid expression system to study RNA packaging in HaSV VLPs assembled in Spodoptera frugiperda 9 (Sf9) cells co-expressing p17 and VCap. The study showed that the p17 ORF was required for the packaging of RNA 2 during capsid assembly but it was unclear whether p17 expression was required for packaging. In addition, expression from the transfected plasmids was sub-optimal affecting both the yield of VLPs and the detection of p17. The aim of this study was to use the plasmid system to test whether p17 expression was required for plasmid-derived VLP RNA packaging and then develop a baculovirus-mediated system to test this hypothesis. By using a plasmid in which the start codon of p17 was mutated, it was shown that p17 expression was required for RNA 2 packaging into plasmid-VLPs. For the baculovirus system, four recombinant baculoviruses based upon the pFastBac Dual expression system, were constructed. These included Bac20, expressing wild type RNA 2, Bac21, RNA 2 with p17 silenced, Bac23, RNA 2 and p17 expressed on a separate transcript and Bac24, RNA 2 with p17 silenced plus p17 expressed on a separate transcript. Assembly of VLPs was more efficient using the baculovirus expression system and p17 expression was observed in cells infected with Bac20, Bac23 and Bac24, but not Bac21. In contrast to the plasmid-VLPs, bac-VLPs did not require p17 for the encapsidation of RNA 2. In addition to RNA 2, Bac23 and Bac24 packaged the p17 mRNA transcribed separately from RNA 2. This insinuated that bac-VLPs may be packaging RNA non-selectively. It was proposed that p17 may play a role in packaging in an RNA-limiting environment (plasmid system) but functioned differently when viral RNA was in excess (baculovirus system). This data points to the importance of developing a replication system for the analysis of the packaging pathways of these viruses and this study has laid down the foundations for such a system in which RNA 1 and RNA 2 can be introduced into a single cell by means of a single recombinant virus.
- Full Text:
- Date Issued: 2012
A baseline for information security knowledge for end users
- Authors: Boshoff, Ryno
- Date: 2012
- Subjects: Data protection -- Management , Computer security -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9808 , http://hdl.handle.net/10948/d1013260
- Description: Information plays a vast contributing role to all resources within an organisation. Organisations should recognise the importance of information and implement information security controls to protect their information as this will ensure that the organisation‟s information retains its confidentiality, integrity and availability. Information security controls, which are the means of managing information risks, rely heavily on the user‟s knowledge regarding the use of these controls for their effectiveness, and as such, users should be educated in order to maximise effectiveness of these controls. Current information security educational programmes are created without necessarily taking into account the target audience, who comprises of all employees, stakeholders, suppliers, third parties, customers or other external parties or third party that requires access to the organisation‟s information. This results in programmes that are not linguistically appropriate; or that present knowledge at an inappropriate level for the target audience. This could leave users bored or confused, without successfully changing their behaviour or improving knowledge. This dissertation identifies a baseline for information security knowledge targeted at end users. This was done by means of a Delphi Study, where a profile of “generic” end users comprised of information security topics and concepts were rated by experts from the field of information security education. This resulted in the elimination of inappropriate topics and concepts and retaining the relevant and appropriate aspects. This baseline for information security knowledge can be characterised as a minimum standard that everybody should be educated on as an introductory or refresher course. This can also serve as the foundation phase to educate end users with knowledge of the basic topics and concepts to enable them to fulfil their responsibilities in order to protect information. If needed, topics and concepts could be added to the baseline for information security knowledge for specialised target audiences (e.g. specialised End Users, ICT Staff or Top Management).
- Full Text:
- Date Issued: 2012
- Authors: Boshoff, Ryno
- Date: 2012
- Subjects: Data protection -- Management , Computer security -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9808 , http://hdl.handle.net/10948/d1013260
- Description: Information plays a vast contributing role to all resources within an organisation. Organisations should recognise the importance of information and implement information security controls to protect their information as this will ensure that the organisation‟s information retains its confidentiality, integrity and availability. Information security controls, which are the means of managing information risks, rely heavily on the user‟s knowledge regarding the use of these controls for their effectiveness, and as such, users should be educated in order to maximise effectiveness of these controls. Current information security educational programmes are created without necessarily taking into account the target audience, who comprises of all employees, stakeholders, suppliers, third parties, customers or other external parties or third party that requires access to the organisation‟s information. This results in programmes that are not linguistically appropriate; or that present knowledge at an inappropriate level for the target audience. This could leave users bored or confused, without successfully changing their behaviour or improving knowledge. This dissertation identifies a baseline for information security knowledge targeted at end users. This was done by means of a Delphi Study, where a profile of “generic” end users comprised of information security topics and concepts were rated by experts from the field of information security education. This resulted in the elimination of inappropriate topics and concepts and retaining the relevant and appropriate aspects. This baseline for information security knowledge can be characterised as a minimum standard that everybody should be educated on as an introductory or refresher course. This can also serve as the foundation phase to educate end users with knowledge of the basic topics and concepts to enable them to fulfil their responsibilities in order to protect information. If needed, topics and concepts could be added to the baseline for information security knowledge for specialised target audiences (e.g. specialised End Users, ICT Staff or Top Management).
- Full Text:
- Date Issued: 2012
A brain-compatible approach to the presentation of cyber security educational material
- Authors: Reid, Rayne
- Date: 2012
- Subjects: Data protection -- Management , Computer security -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9819 , http://hdl.handle.net/10948/d1019895
- Description: Information is an extremely important asset in modern society. It is used in most daily activities and transactions, and, thus, the importance of information is acknowledged by both organisational and private home information users. Unfortunately, as with any asset, there are often threats to this asset and, therefore, an information security solution is required to protect information against potential threats. Human beings play a major role in the implementation and governing of an entire information security process and, therefore, they have responsibilities in this regard. Thus, the effectiveness of any information security solutions in either an organisational or a private context is dependent on the human beings involved in the process. Accordingly, if these human beings are either unaware or not knowledgeable about their roles in the security solution they become the weak link in the information security solutions and, thus, it is essential that all these information users be educated in order to combat any threats to the information security. Many of the current information security education programmes and materials are not effective, possibly because the majority of these current approaches have been designed without using a sound pedagogical theory. In addition, many of these programmes also only target organisational users. This, in turn, is problematic as information security education is required by everybody, organisational and private information users alike. This dissertation addressed the lack of a pedagogical basis in the designing of information security educational courses suited to an extremely broad target audience. Accordingly, the dissertation set out to demonstrate how a pedagogy, which is broadly used and accepted for a diverse target audience of learners, could be applied to the design of the presentation of a web based, cyber security educational courses.
- Full Text:
- Date Issued: 2012
- Authors: Reid, Rayne
- Date: 2012
- Subjects: Data protection -- Management , Computer security -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9819 , http://hdl.handle.net/10948/d1019895
- Description: Information is an extremely important asset in modern society. It is used in most daily activities and transactions, and, thus, the importance of information is acknowledged by both organisational and private home information users. Unfortunately, as with any asset, there are often threats to this asset and, therefore, an information security solution is required to protect information against potential threats. Human beings play a major role in the implementation and governing of an entire information security process and, therefore, they have responsibilities in this regard. Thus, the effectiveness of any information security solutions in either an organisational or a private context is dependent on the human beings involved in the process. Accordingly, if these human beings are either unaware or not knowledgeable about their roles in the security solution they become the weak link in the information security solutions and, thus, it is essential that all these information users be educated in order to combat any threats to the information security. Many of the current information security education programmes and materials are not effective, possibly because the majority of these current approaches have been designed without using a sound pedagogical theory. In addition, many of these programmes also only target organisational users. This, in turn, is problematic as information security education is required by everybody, organisational and private information users alike. This dissertation addressed the lack of a pedagogical basis in the designing of information security educational courses suited to an extremely broad target audience. Accordingly, the dissertation set out to demonstrate how a pedagogy, which is broadly used and accepted for a diverse target audience of learners, could be applied to the design of the presentation of a web based, cyber security educational courses.
- Full Text:
- Date Issued: 2012
A case study describing factors perceived to be impacting staff satisfaction amongst health care professionals at the East London Hospital complex
- Authors: Galo, Luntu
- Date: 2012
- Subjects: Medical personnel -- Job satisfaction -- South Africa -- Case studies Medical personnel -- Job stress -- South Africa -- Case studies Medical personnel -- South Africa -- Attitudes -- Case studies Hospitals -- South Africa -- Administration Health services administration -- South Africa Health planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:784 , http://hdl.handle.net/10962/d1003905
- Description: This thesis was born from a concern the researcher had with regard to negative reports in the media emanating from 4 babies that died at Cecilia Makiwane Hospital Peadiatric ICU unit due to power supply failure. The most significant of these negative reports was in 2007 when the Daily Dispatch ran a series of articles regarding what they termed avoidable deaths over the last 14 years. The ease with which staff communicated with the media together with the high absenteeism rate and high turnover was a cause for concern. When the researcher analysed the history of the problem, it immerged from the respondents’ responses that the rationalistion process undertaken by the Eastern Cape Department of Health (ECDoH) was a significant root cause to the problem. The literature review focused on three areas viz.: Organisational Culture, Organisational Change, Foundations of Satisfaction. This focus was used to confine the problem to a manageable project but secondly each of the aspects are interwoven. Routledge (2010) notes that culture is the reflection of the values advocated by a founder or leader by way of his/her day to day actions. This is done by the leader creating a perception or viewpoint that assists the employees to achieve the organisation’s mission, vision and goals. In any organisation change is a constant and it needs to be effectively managed. With government institutions like the East London Hospital Complex (ELHC) directives come from the top and are implemented by an unprepared and untrained leadership and management cadre and clear communication of vision and objective of the desired outcomes never happens. The aim of the research was to: describe the existing Organisational Culture present at ELHC (Perform an organisational diagnosis); describe the impact of change (rationalisation) and to analyze why there was such a high staff turnover. It is clear from the results of the survey conducted that significant dissatisfaction prevailed relating to how the institution was managed. Dissatisfaction amongst the health professionals was general but also specific to the following: leadership and management issues, fairness, remuneration and lack of resources. The recommendations therefore focused on developing management and leadership within the proposal of Dubrin’s model (2001).
- Full Text:
- Date Issued: 2012
- Authors: Galo, Luntu
- Date: 2012
- Subjects: Medical personnel -- Job satisfaction -- South Africa -- Case studies Medical personnel -- Job stress -- South Africa -- Case studies Medical personnel -- South Africa -- Attitudes -- Case studies Hospitals -- South Africa -- Administration Health services administration -- South Africa Health planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:784 , http://hdl.handle.net/10962/d1003905
- Description: This thesis was born from a concern the researcher had with regard to negative reports in the media emanating from 4 babies that died at Cecilia Makiwane Hospital Peadiatric ICU unit due to power supply failure. The most significant of these negative reports was in 2007 when the Daily Dispatch ran a series of articles regarding what they termed avoidable deaths over the last 14 years. The ease with which staff communicated with the media together with the high absenteeism rate and high turnover was a cause for concern. When the researcher analysed the history of the problem, it immerged from the respondents’ responses that the rationalistion process undertaken by the Eastern Cape Department of Health (ECDoH) was a significant root cause to the problem. The literature review focused on three areas viz.: Organisational Culture, Organisational Change, Foundations of Satisfaction. This focus was used to confine the problem to a manageable project but secondly each of the aspects are interwoven. Routledge (2010) notes that culture is the reflection of the values advocated by a founder or leader by way of his/her day to day actions. This is done by the leader creating a perception or viewpoint that assists the employees to achieve the organisation’s mission, vision and goals. In any organisation change is a constant and it needs to be effectively managed. With government institutions like the East London Hospital Complex (ELHC) directives come from the top and are implemented by an unprepared and untrained leadership and management cadre and clear communication of vision and objective of the desired outcomes never happens. The aim of the research was to: describe the existing Organisational Culture present at ELHC (Perform an organisational diagnosis); describe the impact of change (rationalisation) and to analyze why there was such a high staff turnover. It is clear from the results of the survey conducted that significant dissatisfaction prevailed relating to how the institution was managed. Dissatisfaction amongst the health professionals was general but also specific to the following: leadership and management issues, fairness, remuneration and lack of resources. The recommendations therefore focused on developing management and leadership within the proposal of Dubrin’s model (2001).
- Full Text:
- Date Issued: 2012
A case study of Bigodi Wetland Sanctuary as a community driven Community-Based Natural Resource Management initiative : maintaining livelihoods and wetland health
- Authors: Gosling, Amanda Karen
- Date: 2012
- Subjects: Wetland conservation -- Uganda , Wetland ecology -- Uganda , Natural resources management areas -- Uganda , Rural development -- Uganda
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4752 , http://hdl.handle.net/10962/d1007065 , Wetland conservation -- Uganda , Wetland ecology -- Uganda , Natural resources management areas -- Uganda , Rural development -- Uganda
- Description: Community-Based Natural Resource Management (CBNRM) is considered a win-win approach to reconcile conservation with natural resource use. CBNRM aims to accomplish conservation whilst prioritising development and contributing to poverty alleviation. This study analysed the different components of a CBNRM initiative, Bigodi Wetland Sanctuary (BWS), located in western Uganda. The study was carried out by interviewing the managing committee members (n= 8) as well as local households (n= 68) regarding the manner in which the project works, and the associated benefits and constraints. The main management issues recognised were a lack of monitoring and committee cohesiveness. The information gathered through the household survey enabled the calculation of the value of local livelihood options. This was done on the premise that conservation is better accepted when land users realise the economic value of natural resources. The average annual value of household livelihoods was represented by 30% crop production, 57% natural resource use, and 13% livestock. Lastly, wetland assessments were performed using the WET-Health and WET-EcoServices methodologies from the Wetland Management Series. These assessments indicated that the impacts of local livelihoods on the wetland were currently low but potential issues could arise with the increasing human population density. Ultimately, BWS presents both environmental and social costs and benefits. With a detailed and interdisciplinary method specific recommendations of improvement can be made to reduce such costs and further reconcile the conservation of Bigodi Wetland with local natural resource use..
- Full Text:
- Date Issued: 2012
- Authors: Gosling, Amanda Karen
- Date: 2012
- Subjects: Wetland conservation -- Uganda , Wetland ecology -- Uganda , Natural resources management areas -- Uganda , Rural development -- Uganda
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4752 , http://hdl.handle.net/10962/d1007065 , Wetland conservation -- Uganda , Wetland ecology -- Uganda , Natural resources management areas -- Uganda , Rural development -- Uganda
- Description: Community-Based Natural Resource Management (CBNRM) is considered a win-win approach to reconcile conservation with natural resource use. CBNRM aims to accomplish conservation whilst prioritising development and contributing to poverty alleviation. This study analysed the different components of a CBNRM initiative, Bigodi Wetland Sanctuary (BWS), located in western Uganda. The study was carried out by interviewing the managing committee members (n= 8) as well as local households (n= 68) regarding the manner in which the project works, and the associated benefits and constraints. The main management issues recognised were a lack of monitoring and committee cohesiveness. The information gathered through the household survey enabled the calculation of the value of local livelihood options. This was done on the premise that conservation is better accepted when land users realise the economic value of natural resources. The average annual value of household livelihoods was represented by 30% crop production, 57% natural resource use, and 13% livestock. Lastly, wetland assessments were performed using the WET-Health and WET-EcoServices methodologies from the Wetland Management Series. These assessments indicated that the impacts of local livelihoods on the wetland were currently low but potential issues could arise with the increasing human population density. Ultimately, BWS presents both environmental and social costs and benefits. With a detailed and interdisciplinary method specific recommendations of improvement can be made to reduce such costs and further reconcile the conservation of Bigodi Wetland with local natural resource use..
- Full Text:
- Date Issued: 2012
A comparative analysis of factors affecting the purchasing decisions of cleaning rag buyers in the Eastern Cape
- Authors: Shearer, David Charcles
- Date: 2012
- Subjects: Purchasing -- Decision making , Consumer behavior -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8898 , http://hdl.handle.net/10948/d1020928
- Description: The objectives of this research project were to identify and compare factors that influence the purchasing decisions of Multifibres’ customers active in each channel. Multifibres manufactures and distributes industrial cleaning rags to three channels or client categories, these being industrial resellers, industrial end-users and the walk-in customers. An extensive literature review revealed that purchasing decisions are influenced by, amongst other factors, the buyer’s role, the internal cognitive processes of the buyer, as well as factors present in the buyer’s business and external environment. An empirical study was conducted utilising in-depth interviews. The most prevalent, emergent themes that buyers attached the greatest weight to when purchasing cleaning rags were: price; quality; service; relationships; and, convenience. These factors were probed, analysed and compared, based on each buyer category’s unique set of characteristics. When motivating their purchasing preferences, resellers emphasised the importance of the business relationship and trust as being paramount, while end-users viewed price and service as the most important factors. Walk-in customers valued the combination of price and convenience as the most important reasons influencing their purchasing decisions.
- Full Text:
- Date Issued: 2012
- Authors: Shearer, David Charcles
- Date: 2012
- Subjects: Purchasing -- Decision making , Consumer behavior -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8898 , http://hdl.handle.net/10948/d1020928
- Description: The objectives of this research project were to identify and compare factors that influence the purchasing decisions of Multifibres’ customers active in each channel. Multifibres manufactures and distributes industrial cleaning rags to three channels or client categories, these being industrial resellers, industrial end-users and the walk-in customers. An extensive literature review revealed that purchasing decisions are influenced by, amongst other factors, the buyer’s role, the internal cognitive processes of the buyer, as well as factors present in the buyer’s business and external environment. An empirical study was conducted utilising in-depth interviews. The most prevalent, emergent themes that buyers attached the greatest weight to when purchasing cleaning rags were: price; quality; service; relationships; and, convenience. These factors were probed, analysed and compared, based on each buyer category’s unique set of characteristics. When motivating their purchasing preferences, resellers emphasised the importance of the business relationship and trust as being paramount, while end-users viewed price and service as the most important factors. Walk-in customers valued the combination of price and convenience as the most important reasons influencing their purchasing decisions.
- Full Text:
- Date Issued: 2012
A comparative study of masculinity in the Twilight films and selected teen dramas
- Theodosiou, Stephanie Nicole
- Authors: Theodosiou, Stephanie Nicole
- Date: 2012
- Subjects: Masculinity in motion pictures
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8425 , http://hdl.handle.net/10948/d1019976
- Description: This research paper aims to investigate the effect mainstream cinema has on the formulation and practice of the masculine stereotype in society, thus exploring the representations of masculinity being provided to males through mainstream cinema. This paper examines the representation of masculinity with reference to cinematic depictions of male masculinity produced in the film category of Teen Drama in the 90‘s/ 2000‘s and 2010 to determine the image the media enforces, through cinema, to influence what males modeled themselves on in both the past and present. This treatise shows the effect the media had on men in the past and how present day men continue to base their individual identity, which has been dramatically influenced and stereotyped by the high standards of the media, by analyzing the movie phenomenon of the Twilight franchise (1 to 3) with reference to Clueless (Amy Heckerling, 1995), 10 Things I hate About You (Gil Junger, 1999), Bring It On (Peyton Reed, 2000), John Tucker Must Die (Betty Thomas, 2006), Easy A (Will Gluck, 2010) and I am Number Four (D.J. Caruso, 2011) featured in the 90‘s/ 2000‘s and 2010. This was carried out through qualitative semiotic research to determine the overall influence the media, particularly mainstream cinema, has on the ideals of masculinity that heterosexual males seek to attain.
- Full Text:
- Date Issued: 2012
- Authors: Theodosiou, Stephanie Nicole
- Date: 2012
- Subjects: Masculinity in motion pictures
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8425 , http://hdl.handle.net/10948/d1019976
- Description: This research paper aims to investigate the effect mainstream cinema has on the formulation and practice of the masculine stereotype in society, thus exploring the representations of masculinity being provided to males through mainstream cinema. This paper examines the representation of masculinity with reference to cinematic depictions of male masculinity produced in the film category of Teen Drama in the 90‘s/ 2000‘s and 2010 to determine the image the media enforces, through cinema, to influence what males modeled themselves on in both the past and present. This treatise shows the effect the media had on men in the past and how present day men continue to base their individual identity, which has been dramatically influenced and stereotyped by the high standards of the media, by analyzing the movie phenomenon of the Twilight franchise (1 to 3) with reference to Clueless (Amy Heckerling, 1995), 10 Things I hate About You (Gil Junger, 1999), Bring It On (Peyton Reed, 2000), John Tucker Must Die (Betty Thomas, 2006), Easy A (Will Gluck, 2010) and I am Number Four (D.J. Caruso, 2011) featured in the 90‘s/ 2000‘s and 2010. This was carried out through qualitative semiotic research to determine the overall influence the media, particularly mainstream cinema, has on the ideals of masculinity that heterosexual males seek to attain.
- Full Text:
- Date Issued: 2012
A comparison between the approaches to unfair discrimination in employment in South Africa and Nigeria
- Authors: Odeyemi, Hannah Olubunmi
- Date: 2012
- Subjects: Discrimination in employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- Nigeria , Unfair labor practices -- South Africa , Unfair labor practices -- Nigeria
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10270 , http://hdl.handle.net/10948/d1012054 , Discrimination in employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- Nigeria , Unfair labor practices -- South Africa , Unfair labor practices -- Nigeria
- Description: Issues concerning employment are some of the most serious issues of our time. But it is in the last two decades or so that these started receiving consideration. For instance, South Africa has experienced changes in the landscape of employment relations in organisations in the last decades. And no area of South Africa law is more critical than the prohibition of unfair discrimination, especially in the workpalce. The enactment of the Constitution brought about the need to eradicate unfair discrimination in the workpalce. Section 9 of the Constitution states that no person may unfairly discriminate directly or indirectly against anyone and that national legislation must be enacted to prevent or prohibit unfair discrimination. To enforce this, certain legislations like the Labour Law Act, Employment Act, Promotion of Equality and Prohibition of Unfair Discrimination Act (Equality Act), were enacted to give effect to the equality provision of the Constitution. In a similar vein, in Nigeria, workplace discrimination which is at the top of human rights violation perpetrated by employers of labour is of paramount concern to legislators and the government. Sex , age, ethinicty, religion, trade union membership and political opinion are some of the grounds upon which workers may not be discriminated against in Nigeria. Section 17 of the Constitution states that the State social order is founded on the ideals of freedom, equality and justice. It goes on to provide that every citizen shall have equality of rights, obligations and opportunities before the law. More specifically, the section stipilates that the State shall ensure that all citizens, without discrimination of any group whatsoever, have the opportunity of livehood as well as adequate opportunity to secure suitable employment and that there is equal pay for equal work without discrimination on account of sex, or any ground. Hence, there are The Nigerian Labour Act, the Federal Character Commission, etc that are saddled with the responsibility of addressing unfair discrimination and giving force to the provision of the Constitution. Despite the anti-discrimination laws and provisions made available in both countries, it is still alarming to see that unfair discrimination in the workplace is still on the increase. This, as will be discussed later, is probably due to factors such as lack of communication, long-stading patterns of educational inequalities that have resulted in inequalities in manpower, differences in drive, motivation, cultural disposition and geographical opportunities, racial difference and ethnicity, domination of one group by the other, etc. This research will briefly focus on the comparison between the approaches to unfair discrimination in employment between South Africa and Nigeria. It will discuss the development of unfair discrimination, grounds on which it is perpetrated, defences relating to unfair discrimination, and anti-discrimination laws put in place by the two jurisdictions to curb discrimination, as well as suggest on how to forestall unfair discrimination.
- Full Text:
- Date Issued: 2012
- Authors: Odeyemi, Hannah Olubunmi
- Date: 2012
- Subjects: Discrimination in employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- Nigeria , Unfair labor practices -- South Africa , Unfair labor practices -- Nigeria
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10270 , http://hdl.handle.net/10948/d1012054 , Discrimination in employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- Nigeria , Unfair labor practices -- South Africa , Unfair labor practices -- Nigeria
- Description: Issues concerning employment are some of the most serious issues of our time. But it is in the last two decades or so that these started receiving consideration. For instance, South Africa has experienced changes in the landscape of employment relations in organisations in the last decades. And no area of South Africa law is more critical than the prohibition of unfair discrimination, especially in the workpalce. The enactment of the Constitution brought about the need to eradicate unfair discrimination in the workpalce. Section 9 of the Constitution states that no person may unfairly discriminate directly or indirectly against anyone and that national legislation must be enacted to prevent or prohibit unfair discrimination. To enforce this, certain legislations like the Labour Law Act, Employment Act, Promotion of Equality and Prohibition of Unfair Discrimination Act (Equality Act), were enacted to give effect to the equality provision of the Constitution. In a similar vein, in Nigeria, workplace discrimination which is at the top of human rights violation perpetrated by employers of labour is of paramount concern to legislators and the government. Sex , age, ethinicty, religion, trade union membership and political opinion are some of the grounds upon which workers may not be discriminated against in Nigeria. Section 17 of the Constitution states that the State social order is founded on the ideals of freedom, equality and justice. It goes on to provide that every citizen shall have equality of rights, obligations and opportunities before the law. More specifically, the section stipilates that the State shall ensure that all citizens, without discrimination of any group whatsoever, have the opportunity of livehood as well as adequate opportunity to secure suitable employment and that there is equal pay for equal work without discrimination on account of sex, or any ground. Hence, there are The Nigerian Labour Act, the Federal Character Commission, etc that are saddled with the responsibility of addressing unfair discrimination and giving force to the provision of the Constitution. Despite the anti-discrimination laws and provisions made available in both countries, it is still alarming to see that unfair discrimination in the workplace is still on the increase. This, as will be discussed later, is probably due to factors such as lack of communication, long-stading patterns of educational inequalities that have resulted in inequalities in manpower, differences in drive, motivation, cultural disposition and geographical opportunities, racial difference and ethnicity, domination of one group by the other, etc. This research will briefly focus on the comparison between the approaches to unfair discrimination in employment between South Africa and Nigeria. It will discuss the development of unfair discrimination, grounds on which it is perpetrated, defences relating to unfair discrimination, and anti-discrimination laws put in place by the two jurisdictions to curb discrimination, as well as suggest on how to forestall unfair discrimination.
- Full Text:
- Date Issued: 2012
A comparison of harvester productivity and stump volume waste in coppiced and planted eucalyptus grandis pulpwood compartments in the KwaZulu-Natal forestry region of South Africa
- Ramantswana, Mufhumudzi Muedanyi
- Authors: Ramantswana, Mufhumudzi Muedanyi
- Date: 2012
- Subjects: Forest productivity , Forest management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10744 , http://hdl.handle.net/10948/d1019844
- Description: Over the past decade the South African forestry industry has gradually experienced the ramifications of labour scarcity, increases in labour costs, the effect of HIV and AIDS and increasing timber demand. Consequently, this has led to an increase in the mechanisation rate, especially in timber harvesting operations. Due to the labour challenges in South Africa, mechanised forestry equipment has increasingly been required to operate in complex forest conditions, such as coppiced compartments, where they have not operated before. It therefore occurs that harvesters are either used in certain coppiced compartments with uncertain productivity expectations, or the harvesters are not used in these compartments due to a lack of productivity knowledge. The influence that certain factors have on harvester productivity and stump volume loss – factors such as coppice regeneration practices and stem form – is poorly understood and has not been quantified. No scientific research exists regarding the effects of coppice compartments on the productivity of a harvester and the amount of stump volume waste. This research aimed at determining the influence of tree volume, tree form, stem felled first and distance between stems on the productivity of an excavator based harvester in coppiced double, coppiced single and planted Eucalyptus grandis pulpwood compartments. Furthermore, the research determined whether there was any stump volume waste, and quantified how much of it was due to excessive stump heights by the harvester. Through regression analysis, productivity equations were derived to make productivity predictions in both coppiced and planted compartments. All stumps were evaluated for waste and the average stump volume waste in coppiced double, coppiced single and planted trees was determined. The research results showed that planted trees had the highest productivity across all tree sizes, followed by coppiced single trees and then coppiced double stems. When harvesting a 0.2 m3 tree, the mean harvester productivity was 8.7 m3 per PMH in coppiced double trees, 13.8 m3 per PMH in coppiced single trees and 16.1 m3 per PMH in planted trees. In coppiced double stems the productivity was not significantly influence by the distance between stems. However, the productivity was significantly influenced by the stem felled first. The regression results showed that if the smaller stem was felled first, the productivity would increase if the larger stem’s volume was less than 0.18 m3; however where the larger stem was greater than 0.18 m3, the relationship was reversed. In addition, the productivity for both coppiced single trees and coppiced double stems were significantly influenced by stem form. The poorly formed trees had low productivity compared to the trees with good form. The stump volume findings showed that coppiced double stems had the highest average stump volume waste per stump, with 0.00307 m3 waste, followed by coppiced single trees (0.001954 m3) and planted trees (0.001650 m3). The average stump volume waste per stump with waste for the planted trees was negligible. This research provides forestry companies and harvesting contractors with information on the effect of tree volume, tree form and stem felled first on harvester productivity in E. grandis coppiced double, coppiced single and planted compartments. This information will assist in making equipment and system selection decisions and improve operational management and control. In addition, they will also be aware of stump volume losses that will occur in the three scenarios.
- Full Text:
- Date Issued: 2012
- Authors: Ramantswana, Mufhumudzi Muedanyi
- Date: 2012
- Subjects: Forest productivity , Forest management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10744 , http://hdl.handle.net/10948/d1019844
- Description: Over the past decade the South African forestry industry has gradually experienced the ramifications of labour scarcity, increases in labour costs, the effect of HIV and AIDS and increasing timber demand. Consequently, this has led to an increase in the mechanisation rate, especially in timber harvesting operations. Due to the labour challenges in South Africa, mechanised forestry equipment has increasingly been required to operate in complex forest conditions, such as coppiced compartments, where they have not operated before. It therefore occurs that harvesters are either used in certain coppiced compartments with uncertain productivity expectations, or the harvesters are not used in these compartments due to a lack of productivity knowledge. The influence that certain factors have on harvester productivity and stump volume loss – factors such as coppice regeneration practices and stem form – is poorly understood and has not been quantified. No scientific research exists regarding the effects of coppice compartments on the productivity of a harvester and the amount of stump volume waste. This research aimed at determining the influence of tree volume, tree form, stem felled first and distance between stems on the productivity of an excavator based harvester in coppiced double, coppiced single and planted Eucalyptus grandis pulpwood compartments. Furthermore, the research determined whether there was any stump volume waste, and quantified how much of it was due to excessive stump heights by the harvester. Through regression analysis, productivity equations were derived to make productivity predictions in both coppiced and planted compartments. All stumps were evaluated for waste and the average stump volume waste in coppiced double, coppiced single and planted trees was determined. The research results showed that planted trees had the highest productivity across all tree sizes, followed by coppiced single trees and then coppiced double stems. When harvesting a 0.2 m3 tree, the mean harvester productivity was 8.7 m3 per PMH in coppiced double trees, 13.8 m3 per PMH in coppiced single trees and 16.1 m3 per PMH in planted trees. In coppiced double stems the productivity was not significantly influence by the distance between stems. However, the productivity was significantly influenced by the stem felled first. The regression results showed that if the smaller stem was felled first, the productivity would increase if the larger stem’s volume was less than 0.18 m3; however where the larger stem was greater than 0.18 m3, the relationship was reversed. In addition, the productivity for both coppiced single trees and coppiced double stems were significantly influenced by stem form. The poorly formed trees had low productivity compared to the trees with good form. The stump volume findings showed that coppiced double stems had the highest average stump volume waste per stump, with 0.00307 m3 waste, followed by coppiced single trees (0.001954 m3) and planted trees (0.001650 m3). The average stump volume waste per stump with waste for the planted trees was negligible. This research provides forestry companies and harvesting contractors with information on the effect of tree volume, tree form and stem felled first on harvester productivity in E. grandis coppiced double, coppiced single and planted compartments. This information will assist in making equipment and system selection decisions and improve operational management and control. In addition, they will also be aware of stump volume losses that will occur in the three scenarios.
- Full Text:
- Date Issued: 2012
A conceptual model of an access-technology-agnostic delivery mechanism for ICT4D services
- Authors: Makitla, Mokone Ishmael
- Date: 2012
- Subjects: Technological innovations -- Developing countries , Information technology -- Developing countries
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9817 , http://hdl.handle.net/10948/d1019756
- Description: Information and Communication Technology for Development (ICT4D) is an emerging research area that is concerned with the beneficial applications of Information and Communications Technology (ICT) to achieve developmental goals. ICT4D is thus concerned with designing and developing innovative technologies for resource-constrained environments for applications in key areas of social development such as health, agriculture and education. The ICT4D initiatives, therefore, are driving three main tasks, namely developing the required infrastructure (connectivity, electricity and computing devices) sustainably, building the required ICT human capacity, and providing access to digital content and services. Each of these three main thrusts necessitates innovation. This study addresses the evident lack of delivery mechanisms to facilitate access to digital content and services to end-users through the technologies that these end-users already possess. This lack of innovative delivery mechanisms is both an impediment to achieving equitable access to digital content and service and an opportunity to innovate. Therefore, drawing from the theoretical background of ICT4D, this study develops a set of technical and socio-technical requirements that the missing delivery mechanisms should satisfy. The study also explores the Service Delivery Platform (SDP) concept as a technically viable basis for the required delivery mechanisms. The study then develops a conceptual model of an Access-Technology-Agnostic Delivery Mechanism as a possible delivery mechanism that facilitates equitable access to digital content and services within an ICT4D context. The relevance of the conceptual model is established and, through a prototype implementation, the technical feasibility and utility of the conceptual model is demonstrated. The conceptual model is demonstrated through a proof of concept implementation using standards-based open source technologies. The proof of concept clearly demonstrates that the access-technology-agnostic delivery of digital content and services is achievable, thus making the same service accessible through different access technologies. In developing the Access-Technology-Agnostic Delivery Mechanism, this study contributes through innovation to providing access to digital content and services in an access-technology-agnostic manner.
- Full Text:
- Date Issued: 2012
- Authors: Makitla, Mokone Ishmael
- Date: 2012
- Subjects: Technological innovations -- Developing countries , Information technology -- Developing countries
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9817 , http://hdl.handle.net/10948/d1019756
- Description: Information and Communication Technology for Development (ICT4D) is an emerging research area that is concerned with the beneficial applications of Information and Communications Technology (ICT) to achieve developmental goals. ICT4D is thus concerned with designing and developing innovative technologies for resource-constrained environments for applications in key areas of social development such as health, agriculture and education. The ICT4D initiatives, therefore, are driving three main tasks, namely developing the required infrastructure (connectivity, electricity and computing devices) sustainably, building the required ICT human capacity, and providing access to digital content and services. Each of these three main thrusts necessitates innovation. This study addresses the evident lack of delivery mechanisms to facilitate access to digital content and services to end-users through the technologies that these end-users already possess. This lack of innovative delivery mechanisms is both an impediment to achieving equitable access to digital content and service and an opportunity to innovate. Therefore, drawing from the theoretical background of ICT4D, this study develops a set of technical and socio-technical requirements that the missing delivery mechanisms should satisfy. The study also explores the Service Delivery Platform (SDP) concept as a technically viable basis for the required delivery mechanisms. The study then develops a conceptual model of an Access-Technology-Agnostic Delivery Mechanism as a possible delivery mechanism that facilitates equitable access to digital content and services within an ICT4D context. The relevance of the conceptual model is established and, through a prototype implementation, the technical feasibility and utility of the conceptual model is demonstrated. The conceptual model is demonstrated through a proof of concept implementation using standards-based open source technologies. The proof of concept clearly demonstrates that the access-technology-agnostic delivery of digital content and services is achievable, thus making the same service accessible through different access technologies. In developing the Access-Technology-Agnostic Delivery Mechanism, this study contributes through innovation to providing access to digital content and services in an access-technology-agnostic manner.
- Full Text:
- Date Issued: 2012
A conflict theory analysis of the 2007 South African public sector strike using a conflict model
- Authors: Knowles, Kelvin David
- Date: 2012
- Subjects: Collective bargaining -- South Africa , Dispute resolution (Law) -- South Africa , Strikes and lockouts -- Law and legislation -- South Africa , Industrial relations -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9407 , http://hdl.handle.net/10948/d1015033
- Description: Conflict is an inherent part of any service relationship, and is one of the important methods of effective organisational functioning. Depending on its management, it has both constructive and negative outcomes. The most extreme outcome of conflict in an industrial relationship is a strike. The South African Public Service strike of 2007 was the most protracted and united strike in the history of South Africa. In order to provide an insight into this strike, this treatise explores the following key aspects: • To present a short background of collective bargaining in the public sector through time. • To provide a short background to the public sector strike in 2007. • To develop a conflict model for analytic purposes based on a literature review and to use the conflict model to analyse the strike. A study of the strike was deemed essential because of its current nature and it being charged with political undertones. Moreover, conflict in the employment relationship has had an important influence on theories of industrial relations. The South African labour relations system is pluralist in nature, with a focus on the formal institutions of industrial relations. The focus should be on the motives and actions of parties in the employment relationship. Hence, one should look beyond conventional explanations in understanding conflict.
- Full Text:
- Date Issued: 2012
- Authors: Knowles, Kelvin David
- Date: 2012
- Subjects: Collective bargaining -- South Africa , Dispute resolution (Law) -- South Africa , Strikes and lockouts -- Law and legislation -- South Africa , Industrial relations -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9407 , http://hdl.handle.net/10948/d1015033
- Description: Conflict is an inherent part of any service relationship, and is one of the important methods of effective organisational functioning. Depending on its management, it has both constructive and negative outcomes. The most extreme outcome of conflict in an industrial relationship is a strike. The South African Public Service strike of 2007 was the most protracted and united strike in the history of South Africa. In order to provide an insight into this strike, this treatise explores the following key aspects: • To present a short background of collective bargaining in the public sector through time. • To provide a short background to the public sector strike in 2007. • To develop a conflict model for analytic purposes based on a literature review and to use the conflict model to analyse the strike. A study of the strike was deemed essential because of its current nature and it being charged with political undertones. Moreover, conflict in the employment relationship has had an important influence on theories of industrial relations. The South African labour relations system is pluralist in nature, with a focus on the formal institutions of industrial relations. The focus should be on the motives and actions of parties in the employment relationship. Hence, one should look beyond conventional explanations in understanding conflict.
- Full Text:
- Date Issued: 2012
A critical analysis of the applicability of King III in the local government sphere: a case of the Buffalo City Metropolitan Municipality in the Eastern Cape from 2009-2011
- Mawonga, Thembinkosi Arthwell
- Authors: Mawonga, Thembinkosi Arthwell
- Date: 2012
- Subjects: Local government -- South Africa -- Eastern Cape , Human services -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11628 , http://hdl.handle.net/10353/d1001236 , Local government -- South Africa -- Eastern Cape , Human services -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Description: The purpose of this mini-dissertation is to investigate the applicability of the King III in local government sphere, as well as to evaluate the impact it is likely to have if its principles and recommendations were to be fully implemented. Local government has been plagued by very serious challenges of poor service delivery and this has been attributed, in the main, to a lack of adequate resources to address backlogs and maintain existing infrastructure. it is therefore very important that all resources are harnessed and channelled to where they are most need, in service delivery. The investigation of the systems and procedures that are in place to ensure prudent financial management and accountability is a worthwhile study. the BMC, is one of two economic hubs of the Eastern Cape. The mini dissertation commences with assessment of governance arrangements that are in place at the BMC against the minimum standards proposed by the King III. It explores the full range of principles proposed in the codes and compares that to practices and procedures at BMC. To avoid a long winded discussion because the principles are close to ten in number; these have been combined and formulated into four broad themes. A consolidated discussion on manifestations on bad governance or poor adherence to good governance in the public sector is discussed in detail. Finally, the impact of various initiatives currently being pursued to promote good governance will be examined, key lessons will be drawn and recommendations for further studies will be made.
- Full Text:
- Date Issued: 2012
- Authors: Mawonga, Thembinkosi Arthwell
- Date: 2012
- Subjects: Local government -- South Africa -- Eastern Cape , Human services -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11628 , http://hdl.handle.net/10353/d1001236 , Local government -- South Africa -- Eastern Cape , Human services -- South Africa -- Eastern Cape , Finance, Public -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Description: The purpose of this mini-dissertation is to investigate the applicability of the King III in local government sphere, as well as to evaluate the impact it is likely to have if its principles and recommendations were to be fully implemented. Local government has been plagued by very serious challenges of poor service delivery and this has been attributed, in the main, to a lack of adequate resources to address backlogs and maintain existing infrastructure. it is therefore very important that all resources are harnessed and channelled to where they are most need, in service delivery. The investigation of the systems and procedures that are in place to ensure prudent financial management and accountability is a worthwhile study. the BMC, is one of two economic hubs of the Eastern Cape. The mini dissertation commences with assessment of governance arrangements that are in place at the BMC against the minimum standards proposed by the King III. It explores the full range of principles proposed in the codes and compares that to practices and procedures at BMC. To avoid a long winded discussion because the principles are close to ten in number; these have been combined and formulated into four broad themes. A consolidated discussion on manifestations on bad governance or poor adherence to good governance in the public sector is discussed in detail. Finally, the impact of various initiatives currently being pursued to promote good governance will be examined, key lessons will be drawn and recommendations for further studies will be made.
- Full Text:
- Date Issued: 2012
A critical analysis of the screen adaptation of Saule’s Unyana womntu
- Authors: Mbatsha, Thembisa
- Date: 2012
- Subjects: Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Language: English
- Type: Thesis , Masters , M Soc Sc (Arts)
- Identifier: vital:11842 , http://hdl.handle.net/10353/d1018674 , Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Description: This research will concentrate on various aspects of the screen adaptation of “Unyana womntu” (Saule, 1989). This study comprises of six chapters. In Chapter 1 of this study, the research aims and objectives are formulated. The research methods that are to be followed will involve a thorough reading of the written text, as well as a comprehensive repetitive viewing of all the episodes of the screen version. In the final part of Chapter 1, background information is provided on the personal life of the author as well as on his contributions to the African literary tradition. Background information on the production of the screen version is also provided. In the Chapter 2, the theoretical aspects of the phenomenon of literary adaptation are discussed. This discussion provides a framework for the analysis of the adaptation of “Unyana womntu” (Saule, 1989) in the remaining chapters of this study. The aim of this chapter is to identify and discuss the most important principles which come into play when the written text is adapted into a screen production. Since the screen production belongs to the genre of the performing arts, this chapter is introduced with a discussion on the performing arts and on the drama, in particular. The section will be concluded with a discussion on the different sub-types of the drama which can be found, including the screen production. The main emphasis is on an analysis of the basic features and principles of the drama in screen format. Since the screen play Unyana Womntu (1998) is based upon a novel by the same title, the literary features of the novel are to be discussed here as well. The specific features of the Xhosa novel will also receive attention.
- Full Text:
- Date Issued: 2012
- Authors: Mbatsha, Thembisa
- Date: 2012
- Subjects: Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Language: English
- Type: Thesis , Masters , M Soc Sc (Arts)
- Identifier: vital:11842 , http://hdl.handle.net/10353/d1018674 , Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Description: This research will concentrate on various aspects of the screen adaptation of “Unyana womntu” (Saule, 1989). This study comprises of six chapters. In Chapter 1 of this study, the research aims and objectives are formulated. The research methods that are to be followed will involve a thorough reading of the written text, as well as a comprehensive repetitive viewing of all the episodes of the screen version. In the final part of Chapter 1, background information is provided on the personal life of the author as well as on his contributions to the African literary tradition. Background information on the production of the screen version is also provided. In the Chapter 2, the theoretical aspects of the phenomenon of literary adaptation are discussed. This discussion provides a framework for the analysis of the adaptation of “Unyana womntu” (Saule, 1989) in the remaining chapters of this study. The aim of this chapter is to identify and discuss the most important principles which come into play when the written text is adapted into a screen production. Since the screen production belongs to the genre of the performing arts, this chapter is introduced with a discussion on the performing arts and on the drama, in particular. The section will be concluded with a discussion on the different sub-types of the drama which can be found, including the screen production. The main emphasis is on an analysis of the basic features and principles of the drama in screen format. Since the screen play Unyana Womntu (1998) is based upon a novel by the same title, the literary features of the novel are to be discussed here as well. The specific features of the Xhosa novel will also receive attention.
- Full Text:
- Date Issued: 2012
A critical evaluation of the management and implementation of performance management and development system: a case study in the Department of Local Government and Traditional Affairs; Bhisho, Eastern Cape
- Authors: Mzileni, Nompumezo
- Date: 2012
- Subjects: Performance -- Management , Strategic planning -- South Africa -- Eastern Cape , Performance awards -- South Africa -- Eastern Cape , Employees -- Training of -- South Africa -- Eastern Cape , Employees -- In-service training -- South Africa -- Eastern Cape , Labor turnover -- South Africa -- Eastern Cape , Organizational commitment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11666 , http://hdl.handle.net/10353/d1007109 , Performance -- Management , Strategic planning -- South Africa -- Eastern Cape , Performance awards -- South Africa -- Eastern Cape , Employees -- Training of -- South Africa -- Eastern Cape , Employees -- In-service training -- South Africa -- Eastern Cape , Labor turnover -- South Africa -- Eastern Cape , Organizational commitment -- South Africa -- Eastern Cape
- Description: Performance management systems help align individual goals and objectives with those of the organisation. The system engages employees and thereby directs them toward achieving the strategic goals of the organisation. The purpose of this research study was to conduct a critical evaluation on the management and implementation of Performance management and development System in the Department of Local Government and Traditional Affairs. Despite the importance of performance management, most organisations find it difficult to implement, manage and sustain performance management systems and processes effectively. It is therefore crucial to ensure adequate planning, evaluation and training is done that will support a sustainable process. Given the strategic role played by the SMS, especially the management of Performance Agreements in the realization of government programmes, it is important that departmental officials make efforts to ensure compliance with its provisions. This study has shown that officials have not been accurate enough in their implementation of the PMDS. The study reveals that there is no staff development programme in place that would help develop staff members to grow in the different fields of their jobs. This is a sound reason why staff responded that they are not happy with the current system. It would appear that management does not devote a great deal of time to staff development. The focus of the PMDS needs to be changed from an output-focused system to a management development system, where there is an increased focus on the development of competencies, compared to the current focus on rewarding only output.
- Full Text:
- Date Issued: 2012
- Authors: Mzileni, Nompumezo
- Date: 2012
- Subjects: Performance -- Management , Strategic planning -- South Africa -- Eastern Cape , Performance awards -- South Africa -- Eastern Cape , Employees -- Training of -- South Africa -- Eastern Cape , Employees -- In-service training -- South Africa -- Eastern Cape , Labor turnover -- South Africa -- Eastern Cape , Organizational commitment -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11666 , http://hdl.handle.net/10353/d1007109 , Performance -- Management , Strategic planning -- South Africa -- Eastern Cape , Performance awards -- South Africa -- Eastern Cape , Employees -- Training of -- South Africa -- Eastern Cape , Employees -- In-service training -- South Africa -- Eastern Cape , Labor turnover -- South Africa -- Eastern Cape , Organizational commitment -- South Africa -- Eastern Cape
- Description: Performance management systems help align individual goals and objectives with those of the organisation. The system engages employees and thereby directs them toward achieving the strategic goals of the organisation. The purpose of this research study was to conduct a critical evaluation on the management and implementation of Performance management and development System in the Department of Local Government and Traditional Affairs. Despite the importance of performance management, most organisations find it difficult to implement, manage and sustain performance management systems and processes effectively. It is therefore crucial to ensure adequate planning, evaluation and training is done that will support a sustainable process. Given the strategic role played by the SMS, especially the management of Performance Agreements in the realization of government programmes, it is important that departmental officials make efforts to ensure compliance with its provisions. This study has shown that officials have not been accurate enough in their implementation of the PMDS. The study reveals that there is no staff development programme in place that would help develop staff members to grow in the different fields of their jobs. This is a sound reason why staff responded that they are not happy with the current system. It would appear that management does not devote a great deal of time to staff development. The focus of the PMDS needs to be changed from an output-focused system to a management development system, where there is an increased focus on the development of competencies, compared to the current focus on rewarding only output.
- Full Text:
- Date Issued: 2012
A critical study of voice teaching method, with specific reference to solo singing, choral singing and vocal health for the teenage singer
- Authors: Olivier, Madelie Charlotte
- Date: 2012
- Subjects: Singing -- Instruction and study , Voice culture -- Exercises , Singing -- Methods
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8523 , http://hdl.handle.net/10948/d1019926
- Description: This dissertation presents a critical study of voice teaching method as this pertains to the high school learner studying voice within the South African educational environment, with learning outcomes determined for subject music within the GET (General Education and Training) and FET (Further Education and Training) bands of the Department of Basic Education at each school grade level, as well as by external examining bodies such as Unisa (University of South Africa), Trinity Guildhall and ABRSM (Amalgamated Board of the Royal Schools of Music). Emphasis is placed on the methodological principles applicable in the case of the Western classical music solo vocal repertoire, but reference is also made to the applicability of this method in other vocal genres and, in particular, in the case of choral music participation. Special attention is given to the subject of the vocal health of the developing teenage voice, which includes an overview of vocal disorders and suggestions for rehabilitation and remedial programmes where necessary. Triangulation of research results is achieved in this study through inclusion of: - A thorough survey of selected pertinent bibliographic sources - Description of and engagement with the researcher’s own numerous phenomenological encounters in this field - Interviews conducted in Port Elizabeth with Jill Nock, voice teacher, on the subject of voice teaching method, and with John Black, Ear, Nose and Throat Specialist, on the subject of vocal health. The researcher concludes that there is a need for continued education and training of music educators in the South African high school environment, many of whom are not trained voice specialists, in order to cater for the growing number of high school music learners who choose to specialise in voice. Although educator networking can go a long way towards creating an informal support system to address this need, it is ultimately the responsibility of the Department of Basic Education to address this in a formal and all-encompassing fashion.
- Full Text:
- Date Issued: 2012
- Authors: Olivier, Madelie Charlotte
- Date: 2012
- Subjects: Singing -- Instruction and study , Voice culture -- Exercises , Singing -- Methods
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8523 , http://hdl.handle.net/10948/d1019926
- Description: This dissertation presents a critical study of voice teaching method as this pertains to the high school learner studying voice within the South African educational environment, with learning outcomes determined for subject music within the GET (General Education and Training) and FET (Further Education and Training) bands of the Department of Basic Education at each school grade level, as well as by external examining bodies such as Unisa (University of South Africa), Trinity Guildhall and ABRSM (Amalgamated Board of the Royal Schools of Music). Emphasis is placed on the methodological principles applicable in the case of the Western classical music solo vocal repertoire, but reference is also made to the applicability of this method in other vocal genres and, in particular, in the case of choral music participation. Special attention is given to the subject of the vocal health of the developing teenage voice, which includes an overview of vocal disorders and suggestions for rehabilitation and remedial programmes where necessary. Triangulation of research results is achieved in this study through inclusion of: - A thorough survey of selected pertinent bibliographic sources - Description of and engagement with the researcher’s own numerous phenomenological encounters in this field - Interviews conducted in Port Elizabeth with Jill Nock, voice teacher, on the subject of voice teaching method, and with John Black, Ear, Nose and Throat Specialist, on the subject of vocal health. The researcher concludes that there is a need for continued education and training of music educators in the South African high school environment, many of whom are not trained voice specialists, in order to cater for the growing number of high school music learners who choose to specialise in voice. Although educator networking can go a long way towards creating an informal support system to address this need, it is ultimately the responsibility of the Department of Basic Education to address this in a formal and all-encompassing fashion.
- Full Text:
- Date Issued: 2012
A cross-sectional study to ascertain the prognostic factors and symptoms associated with cryptococcal meningitis cases treated at the East London Hospital complex
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
- Full Text:
- Date Issued: 2012
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
- Full Text:
- Date Issued: 2012
A data warehouse structure design methodology to support the efficient and effective analysis of online resource usage data
- Authors: Ferreira, Cornél
- Date: 2012
- Subjects: Data warehousing , Electronic information resources
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10486 , http://hdl.handle.net/10948/d1016072
- Description: The use of electronic services results in the generation of vast amounts of Online Resource Usage (ORU) data. ORU data typically consists of user login, printing and executed process information. The structure of this type of data restricts the ability of decision makers to effectively and efficiently analyse ORU data. A data warehouse (DW) structure is required which satisfies an organisation’s information requirements. In order to design a DW structure a methodology is needed to provide a design template according to acknowledged practices. The aim of this research was to primarily propose a methodology specifically for the design of a DW structure to support the efficient and effective analysis of ORU data. A variety of relevant DW structure design methodologies were investigated and a number of limitations were identified. These methodologies do not provide methodological support for metadata documentation, physical design and implementation. The most comprehensive methodology identified in the investigation was modified and the Adapted Triple-Driven DW Structure Design Methodology (ATDM) was proposed. The ATDM was successfully applied to the information and communication technology services (ICTS) department of the Nelson Mandela Metropolitan University as the case study for this research. The proposed ATDM consists of different phases which include a requirements analysis phase that was adapted from the identified comprehensive methodology. A physical design and an implementation phase were included in the ATDM. The ATDM was successfully applied to the ICTS case study as a proof of concept. The application of the ATDM to ICTS resulted in the generation and documentation of semantic and technical metadata which describes the DW structure derived from the application of the ATDM at a logical and physical level respectively. The implementation phase was applied using the Microsoft SQL Server integrated tool to obtain an implemented DW structure for ICTS that is described by technical metadata at an implementation level. This research has shown that the ATDM can be successfully applied to obtain an effective and efficient DW structure for analysing ORU data. The ATDM provides guidelines to develop a DW structure for ORU data and future research includes the generalisation of the ATDM to accommodate various domains and different data types.
- Full Text:
- Date Issued: 2012
- Authors: Ferreira, Cornél
- Date: 2012
- Subjects: Data warehousing , Electronic information resources
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10486 , http://hdl.handle.net/10948/d1016072
- Description: The use of electronic services results in the generation of vast amounts of Online Resource Usage (ORU) data. ORU data typically consists of user login, printing and executed process information. The structure of this type of data restricts the ability of decision makers to effectively and efficiently analyse ORU data. A data warehouse (DW) structure is required which satisfies an organisation’s information requirements. In order to design a DW structure a methodology is needed to provide a design template according to acknowledged practices. The aim of this research was to primarily propose a methodology specifically for the design of a DW structure to support the efficient and effective analysis of ORU data. A variety of relevant DW structure design methodologies were investigated and a number of limitations were identified. These methodologies do not provide methodological support for metadata documentation, physical design and implementation. The most comprehensive methodology identified in the investigation was modified and the Adapted Triple-Driven DW Structure Design Methodology (ATDM) was proposed. The ATDM was successfully applied to the information and communication technology services (ICTS) department of the Nelson Mandela Metropolitan University as the case study for this research. The proposed ATDM consists of different phases which include a requirements analysis phase that was adapted from the identified comprehensive methodology. A physical design and an implementation phase were included in the ATDM. The ATDM was successfully applied to the ICTS case study as a proof of concept. The application of the ATDM to ICTS resulted in the generation and documentation of semantic and technical metadata which describes the DW structure derived from the application of the ATDM at a logical and physical level respectively. The implementation phase was applied using the Microsoft SQL Server integrated tool to obtain an implemented DW structure for ICTS that is described by technical metadata at an implementation level. This research has shown that the ATDM can be successfully applied to obtain an effective and efficient DW structure for analysing ORU data. The ATDM provides guidelines to develop a DW structure for ORU data and future research includes the generalisation of the ATDM to accommodate various domains and different data types.
- Full Text:
- Date Issued: 2012
A framework for information security governance in SMMEs
- Authors: Coertze, Jacques Jacobus
- Date: 2012
- Subjects: Business -- Data processing -- Security measures , Management information systems -- Security measures , Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9810 , http://hdl.handle.net/10948/d1014083
- Description: It has been found that many small, medium and micro-sized enterprises (SMMEs) do not comply with sound information security governance principles, specifically the principles involved in drafting information security policies and monitoring compliance, mainly as a result of restricted resources and expertise. Research suggests that this problem occurs worldwide and that the impact it has on SMMEs is great. The problem is further compounded by the fact that, in our modern-day information technology environment, many larger organisations are providing SMMEs with access to their networks. This results not only in SMMEs being exposed to security risks, but the larger organisations as well. In previous research an information security management framework and toolbox was developed to assist SMMEs in drafting information security policies. Although this research was of some help to SMMEs, further research has shown that an even greater problem exists with the governance of information security as a result of the advancements that have been identified in information security literature. The aim of this dissertation is therefore to establish an information security governance framework that requires minimal effort and little expertise to alleviate governance problems. It is believed that such a framework would be useful for SMMEs and would result in the improved implementation of information security governance.
- Full Text:
- Date Issued: 2012
- Authors: Coertze, Jacques Jacobus
- Date: 2012
- Subjects: Business -- Data processing -- Security measures , Management information systems -- Security measures , Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9810 , http://hdl.handle.net/10948/d1014083
- Description: It has been found that many small, medium and micro-sized enterprises (SMMEs) do not comply with sound information security governance principles, specifically the principles involved in drafting information security policies and monitoring compliance, mainly as a result of restricted resources and expertise. Research suggests that this problem occurs worldwide and that the impact it has on SMMEs is great. The problem is further compounded by the fact that, in our modern-day information technology environment, many larger organisations are providing SMMEs with access to their networks. This results not only in SMMEs being exposed to security risks, but the larger organisations as well. In previous research an information security management framework and toolbox was developed to assist SMMEs in drafting information security policies. Although this research was of some help to SMMEs, further research has shown that an even greater problem exists with the governance of information security as a result of the advancements that have been identified in information security literature. The aim of this dissertation is therefore to establish an information security governance framework that requires minimal effort and little expertise to alleviate governance problems. It is believed that such a framework would be useful for SMMEs and would result in the improved implementation of information security governance.
- Full Text:
- Date Issued: 2012