Invalid submission of extension of time claims in the South African construction industry
- Authors: Neethling, Juan Pierre
- Date: 2020
- Subjects: Construction industry -- South Africa , Construction industry -- Management Project management Building -- Superintendence
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46805 , vital:39663
- Description: Most construction projects are delayed in the construction industry due to internal and/or external influences. Proving delay is not a simple task but rather a time-consuming process, as projects consist of numerous activities and a substantial amount of detail, and they interface with the many stakeholders. Several different methods can be used to prove a delay; however, these are academic and are mainly for simple projects. Proving a delay is often difficult for the contractor, who is consistently dealing with multiple project constraints. Therefore, to be effective with an extension of time claim, the contractor must establish causation and liability, and assist in demonstrating the extent of time-related damages experienced as a direct result of the delay events relied upon. The process of recording the delays is dynamic and requires solid knowledge of contract clauses, the ability to distinguish between different types of delays and the capability to identify what constitutes valid evidence. Therefore, a need arises to establish a framework that would assist contractors by standardising their submission. This would contribute to expediting the evaluation and approval process, thus limiting the negative impacts associated with prolonged delay claims. The research obtains a “lived” view from contractors who have participated with EOT claims, therefore, utilising the qualitative research method. The choice of data collection method was semi-structured one-on one face to face interviews. In deriving the findings of the research, the coding scheme techniques were used throughout the research process to manage both the secondary and primary data. The main factors which cause major problems in EOT claims are contractual knowledge, lack of supporting information, contractual compliance, employer inference and the different philosophies of contracts, which often leads to confusion and misinterpretation. There is a lack of awareness and knowledge of the analysis techniques and strategies which could assist in preparing EOT claims, even though there is a substantial amount of literature available. The concept that the industry needs a standardised submission process was welcomed by the participants; the existence of a common strategy would certainly resolve many problems in the submission process, including reducing the number of disputes. There was a consensus among all participants that there is no standard approach to submitting EOT claims in the South African construction industry and exploring a common approach was an idea that was viewed as reasonable and maybe offered a practical solution to address the submission challenges. There were several delimitations to this study. First, the sample only included individuals within the Eastern Cape region. Since the sample size was relatively small, the researcher was cautious when interpreting and generalising the results. Secondly, the targeted population for this research was selected using the purposive sampling method, as opposed to a random sampling, which means that the results of the study cannot be generally applied to a larger population. Lastly, the research was a qualitative study which relied on the interpretations of the researcher based on his understanding of the data collected.
- Full Text:
- Date Issued: 2020
- Authors: Neethling, Juan Pierre
- Date: 2020
- Subjects: Construction industry -- South Africa , Construction industry -- Management Project management Building -- Superintendence
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46805 , vital:39663
- Description: Most construction projects are delayed in the construction industry due to internal and/or external influences. Proving delay is not a simple task but rather a time-consuming process, as projects consist of numerous activities and a substantial amount of detail, and they interface with the many stakeholders. Several different methods can be used to prove a delay; however, these are academic and are mainly for simple projects. Proving a delay is often difficult for the contractor, who is consistently dealing with multiple project constraints. Therefore, to be effective with an extension of time claim, the contractor must establish causation and liability, and assist in demonstrating the extent of time-related damages experienced as a direct result of the delay events relied upon. The process of recording the delays is dynamic and requires solid knowledge of contract clauses, the ability to distinguish between different types of delays and the capability to identify what constitutes valid evidence. Therefore, a need arises to establish a framework that would assist contractors by standardising their submission. This would contribute to expediting the evaluation and approval process, thus limiting the negative impacts associated with prolonged delay claims. The research obtains a “lived” view from contractors who have participated with EOT claims, therefore, utilising the qualitative research method. The choice of data collection method was semi-structured one-on one face to face interviews. In deriving the findings of the research, the coding scheme techniques were used throughout the research process to manage both the secondary and primary data. The main factors which cause major problems in EOT claims are contractual knowledge, lack of supporting information, contractual compliance, employer inference and the different philosophies of contracts, which often leads to confusion and misinterpretation. There is a lack of awareness and knowledge of the analysis techniques and strategies which could assist in preparing EOT claims, even though there is a substantial amount of literature available. The concept that the industry needs a standardised submission process was welcomed by the participants; the existence of a common strategy would certainly resolve many problems in the submission process, including reducing the number of disputes. There was a consensus among all participants that there is no standard approach to submitting EOT claims in the South African construction industry and exploring a common approach was an idea that was viewed as reasonable and maybe offered a practical solution to address the submission challenges. There were several delimitations to this study. First, the sample only included individuals within the Eastern Cape region. Since the sample size was relatively small, the researcher was cautious when interpreting and generalising the results. Secondly, the targeted population for this research was selected using the purposive sampling method, as opposed to a random sampling, which means that the results of the study cannot be generally applied to a larger population. Lastly, the research was a qualitative study which relied on the interpretations of the researcher based on his understanding of the data collected.
- Full Text:
- Date Issued: 2020
A lean production approach to materials management in the Nigerian construction industry
- Authors: Albert, Idowu
- Date: 2020
- Subjects: Materials management , Lean manufacturing Construction industry -- Nigeria
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/46008 , vital:39408
- Description: The Nigerian Construction Industry faces a problem of poor materials management that leads to, among other things, materials waste, poor quality of work, poor materials flow, project delay and cost overrun. Overcoming these challenges, requires the rethinking the current modus operandi of the Nigerian construction industry. One such method that has been espoused as having potential to improve materials management, and associated challenges is ‘lean production’. This research aimed at deciphering the lean approach to production management with a view of extracting its utility in enhancing materials management in the construction industry. The qualitative method of research inquiry that is rooted in the phenomenological paradigm was employed. The research activities included a comprehensive review of the related literature and study of selected cases. Abuja, the Federal capital territory of Nigeria was the selected geographical scope of the research. Ten case studies were purposefully selected for the study. The research instrument was a tick box used for direct observation. The study revealed that poor materials management has a negative effect on the materials management plan. Moreover, mixing of waste at the site, negates the effort for identification of materials waste streams, and makes it difficult to account for materials waste, as well as implementing a materials waste management policy on sites. The research also found that poor materials management has a significant effect (high, moderate or low) on materials waste, quality of work, materials flow, productivity, project delay, project profitability and accounting for materials. The research has developed a conceptual model for a lean production approach to materials management based on the results and informed by the theoretical framework. The study has achieved its aim of establishing an understanding of the lean production approach to materials management in the Nigerian construction industry. The study recommends that construction professionals should be well informed on the effects of poor materials management.
- Full Text:
- Date Issued: 2020
- Authors: Albert, Idowu
- Date: 2020
- Subjects: Materials management , Lean manufacturing Construction industry -- Nigeria
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/46008 , vital:39408
- Description: The Nigerian Construction Industry faces a problem of poor materials management that leads to, among other things, materials waste, poor quality of work, poor materials flow, project delay and cost overrun. Overcoming these challenges, requires the rethinking the current modus operandi of the Nigerian construction industry. One such method that has been espoused as having potential to improve materials management, and associated challenges is ‘lean production’. This research aimed at deciphering the lean approach to production management with a view of extracting its utility in enhancing materials management in the construction industry. The qualitative method of research inquiry that is rooted in the phenomenological paradigm was employed. The research activities included a comprehensive review of the related literature and study of selected cases. Abuja, the Federal capital territory of Nigeria was the selected geographical scope of the research. Ten case studies were purposefully selected for the study. The research instrument was a tick box used for direct observation. The study revealed that poor materials management has a negative effect on the materials management plan. Moreover, mixing of waste at the site, negates the effort for identification of materials waste streams, and makes it difficult to account for materials waste, as well as implementing a materials waste management policy on sites. The research also found that poor materials management has a significant effect (high, moderate or low) on materials waste, quality of work, materials flow, productivity, project delay, project profitability and accounting for materials. The research has developed a conceptual model for a lean production approach to materials management based on the results and informed by the theoretical framework. The study has achieved its aim of establishing an understanding of the lean production approach to materials management in the Nigerian construction industry. The study recommends that construction professionals should be well informed on the effects of poor materials management.
- Full Text:
- Date Issued: 2020
The development of boiler control models for the optimization of boiler efficiency
- Authors: Kellerman, Andre
- Date: 2016
- Subjects: Boilers Boiler-making industry , Steam-boilers Mechatronics Power electronics
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/48014 , vital:40463
- Description: With Eskom’s fleet rapidly reaching end of life and maintenance outages becoming more frequent, it has become more critical to be able to determine transient effects of auxiliary losses and system responses due to instabilities. A low mono-nitrogen oxide (low-NOx) burner replacement project has recently been completed at Camden power station in Ermelo. It has thus deemed itself as a perfect candidate for a model which can be used to understand the new systems’ response during transient scenarios. The aim is to develop a boiler control model to be used for simulation of various process conditions and failure scenarios in order to predict the boiler plants’ behaviour and improve its availability. Research was done on common boiler control practices and modelling of boiler control. A theoretical boiler control model was developed based on the Camden power station’s control system specification. The computational model of the boiler control was implemented in Flownex® simulation environment, which was found to be particular useful for modelling industrial applications. A number of simulations with the computational model were performed and the results were compared against the historic plant data showing good correlation. In parallel, a thermo-fluid model of the boiler was developed using Flownex® by a Masters student at the University of Cape Town, which was then integrated with the control model. The combined Flownex model was used for simulation of the following important cases: a mill trip, a Forced Draught fan trip and load changes. The obtained results show good correlation with the real plant data, indicating that the developed computational model can be considered accurate for Camden’s particular type of boiler and its control. Hence, it is envisaged that the developed combined Flownex model can be applied for simulation of the boilers of the Camden power station.
- Full Text:
- Date Issued: 2016
- Authors: Kellerman, Andre
- Date: 2016
- Subjects: Boilers Boiler-making industry , Steam-boilers Mechatronics Power electronics
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/48014 , vital:40463
- Description: With Eskom’s fleet rapidly reaching end of life and maintenance outages becoming more frequent, it has become more critical to be able to determine transient effects of auxiliary losses and system responses due to instabilities. A low mono-nitrogen oxide (low-NOx) burner replacement project has recently been completed at Camden power station in Ermelo. It has thus deemed itself as a perfect candidate for a model which can be used to understand the new systems’ response during transient scenarios. The aim is to develop a boiler control model to be used for simulation of various process conditions and failure scenarios in order to predict the boiler plants’ behaviour and improve its availability. Research was done on common boiler control practices and modelling of boiler control. A theoretical boiler control model was developed based on the Camden power station’s control system specification. The computational model of the boiler control was implemented in Flownex® simulation environment, which was found to be particular useful for modelling industrial applications. A number of simulations with the computational model were performed and the results were compared against the historic plant data showing good correlation. In parallel, a thermo-fluid model of the boiler was developed using Flownex® by a Masters student at the University of Cape Town, which was then integrated with the control model. The combined Flownex model was used for simulation of the following important cases: a mill trip, a Forced Draught fan trip and load changes. The obtained results show good correlation with the real plant data, indicating that the developed computational model can be considered accurate for Camden’s particular type of boiler and its control. Hence, it is envisaged that the developed combined Flownex model can be applied for simulation of the boilers of the Camden power station.
- Full Text:
- Date Issued: 2016
A cybersecurity curricular framework for IT undergraduates in South Africa
- Authors: Mbuqe, Apelele Alungile
- Date: 2020
- Subjects: LCSH
- Language: English
- Type: Thesis , Masters , MIT
- Identifier: http://hdl.handle.net/10948/49595 , vital:41739
- Description: Abstract ending in a full stop.
- Full Text:
- Authors: Mbuqe, Apelele Alungile
- Date: 2020
- Subjects: LCSH
- Language: English
- Type: Thesis , Masters , MIT
- Identifier: http://hdl.handle.net/10948/49595 , vital:41739
- Description: Abstract ending in a full stop.
- Full Text:
Study of the interrelationship between weld geometry, process variables and joint intergrity for friction processed AA6082-T6 aluminium
- Authors: Samuel, Darren Alton Graham
- Date: 2014
- Subjects: Friction welding -- Research Pressure welding , Welding
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/48058 , vital:40467
- Description: This work presents a broad overview of the successful development of friction taper stud welding (FTSW) in 25mm thick AA6082-T6 sections. It covers the selection of geometry and process parameters, the development of data logging equipment, energy input results and interpretations. Research was carried out to develop the FTSW process for application in 25mm AA6082-T6 sections. The development and application of the FTSW process addresses the need to fill blind holes in thick aluminium sections for the repair of incorrectly drilled holes, friction stir welding exit holes and defects in critical components. During welding, frictional torque, rotational speed, axial force, near interface temperature of the tapered hole and welding time was recorded. This data was used to calculate energy input and energy input rates throughout a weld, enabling the effect of process parameters to be linked to energy, temperature, microhardness and static joint strength. Results of preliminary experiments are included in the study that were used for the design of a process parameter test window for FTSW in AA6082-T6, as no parameters were available to indicate a starting point for the research. The effect of process parameters on the static joint strength at the base of the tapered hole are presented; using a parallel sided stud and tapered hole configuration. This addresses one of the pressing issues facing FTSW of AA6082-T6, namely the lack of bonding at the bottom of the blind hole. A final process parameter matrix is designed based on the process development welds and is presented and discussed. In addition, the use of a non-consumable heat sink was investigated to prevent the premature collapse of the stud during welding and was shown to be critically important to the FTSW of AA6082-T6. To achieve good sidewall bonding a hole taper angle of 60° is required, this having been shown during visual evaluation of development welds. Stud taper angles between 2° and 5° less than the taper angle of the hole were identified as the range within which good FTSW can be made. With this geometry, at no stage during welding did the body of the stud shear off from the weld interface due to softening, thereby preventing collapse of the stud and formation of poorly bonded regions at the sidewall of the hole. The absence of shearing off of the weld interface during plunge was shown to be a good indicator of appropriate geometry and can be linked to welds made with high hole and stud taper angles and high axial force ramp up rates. The large hole and stud diameter relative to the depth of the hole and the large taper angle of the hole further aid in keeping the weld nugget rotating in the hole, promoting plasticization of the sidewall. Axial force ramp up rate was found to be the main critical success factor in an AA6082-T6 FTSW. Without control of this parameter the body of the stud will heat and detrimentally soften during plunge. It was established that good FTSW in AA6082-T6 cannot be made without the use of preheat to overcome the heat dissipation during welding, and is directly linked to improved energy input characteristics. Energy input as well as energy input rate were directly linked to static tensile strength and softening in the HAZ. The angle of the stud has been related to the energy input rate limit of the stud body, with increasing stud taper angles enabling the stud to withstand a higher energy input rate, allowing the weld interface to propagate up the hole at a slower rate, promoting plasticization of the sidewall. This study has successfully made good FTSW in 25mm thick AA6082-T6, in a 60°, 20mm deep tapered hole. Process parameters and ranges that produce FTSW exhibiting the required characteristics were identified by this study.
- Full Text:
- Date Issued: 2014
- Authors: Samuel, Darren Alton Graham
- Date: 2014
- Subjects: Friction welding -- Research Pressure welding , Welding
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/48058 , vital:40467
- Description: This work presents a broad overview of the successful development of friction taper stud welding (FTSW) in 25mm thick AA6082-T6 sections. It covers the selection of geometry and process parameters, the development of data logging equipment, energy input results and interpretations. Research was carried out to develop the FTSW process for application in 25mm AA6082-T6 sections. The development and application of the FTSW process addresses the need to fill blind holes in thick aluminium sections for the repair of incorrectly drilled holes, friction stir welding exit holes and defects in critical components. During welding, frictional torque, rotational speed, axial force, near interface temperature of the tapered hole and welding time was recorded. This data was used to calculate energy input and energy input rates throughout a weld, enabling the effect of process parameters to be linked to energy, temperature, microhardness and static joint strength. Results of preliminary experiments are included in the study that were used for the design of a process parameter test window for FTSW in AA6082-T6, as no parameters were available to indicate a starting point for the research. The effect of process parameters on the static joint strength at the base of the tapered hole are presented; using a parallel sided stud and tapered hole configuration. This addresses one of the pressing issues facing FTSW of AA6082-T6, namely the lack of bonding at the bottom of the blind hole. A final process parameter matrix is designed based on the process development welds and is presented and discussed. In addition, the use of a non-consumable heat sink was investigated to prevent the premature collapse of the stud during welding and was shown to be critically important to the FTSW of AA6082-T6. To achieve good sidewall bonding a hole taper angle of 60° is required, this having been shown during visual evaluation of development welds. Stud taper angles between 2° and 5° less than the taper angle of the hole were identified as the range within which good FTSW can be made. With this geometry, at no stage during welding did the body of the stud shear off from the weld interface due to softening, thereby preventing collapse of the stud and formation of poorly bonded regions at the sidewall of the hole. The absence of shearing off of the weld interface during plunge was shown to be a good indicator of appropriate geometry and can be linked to welds made with high hole and stud taper angles and high axial force ramp up rates. The large hole and stud diameter relative to the depth of the hole and the large taper angle of the hole further aid in keeping the weld nugget rotating in the hole, promoting plasticization of the sidewall. Axial force ramp up rate was found to be the main critical success factor in an AA6082-T6 FTSW. Without control of this parameter the body of the stud will heat and detrimentally soften during plunge. It was established that good FTSW in AA6082-T6 cannot be made without the use of preheat to overcome the heat dissipation during welding, and is directly linked to improved energy input characteristics. Energy input as well as energy input rate were directly linked to static tensile strength and softening in the HAZ. The angle of the stud has been related to the energy input rate limit of the stud body, with increasing stud taper angles enabling the stud to withstand a higher energy input rate, allowing the weld interface to propagate up the hole at a slower rate, promoting plasticization of the sidewall. This study has successfully made good FTSW in 25mm thick AA6082-T6, in a 60°, 20mm deep tapered hole. Process parameters and ranges that produce FTSW exhibiting the required characteristics were identified by this study.
- Full Text:
- Date Issued: 2014
Main thesis title 2021: subtitle if needed. If no subtitle follow instructions in manual
- Authors: Mashinini, Peter Madindwa
- Date: 2015-03
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53340 , vital:45138
- Description: Ti6Al4V alloy usage is increasing due to high demand from the aerospace and automotive industries as well as the field of medical implants. Therefore, identifying the most effective joining technique is critically important to ensure that optimum life can be achieved by welded components. This is especially important for the aerospace industry where fatigue life of the welded joints is vital. This research identified two relatively new joining technologies for Titanium sheet, namely, Friction Stir Welding (FSW),a solid-state process, and Laser Beam Welding (LBW),a fusion joining process. It was therefore vitalto conduct a systematic study of these two processes and compare results to illustrate which process attributes to static and dynamic properties. This investigation was accomplished by varying the process heat input for both FSW and LBW. The main parameters used to control process heat input were rotational-and traverse speed for FSW and laser power and traverse speed for LBW. In FSW, a reaction torque was used to describe the process energy in order to achieve the plasticised material condition. Preliminary work was done to establish the influencing factors for a successful weld which included tool optimisation but process optimisation was not discussed in elaborative detail. In LBW, traverse speed was identified as the critical control parameter to ensure good weld penetration. Weld width was recorded as it showed strong correlation to heat input rates. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, Mechanical Engineering, 2021
- Full Text:
- Date Issued: 2015-03
- Authors: Mashinini, Peter Madindwa
- Date: 2015-03
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53340 , vital:45138
- Description: Ti6Al4V alloy usage is increasing due to high demand from the aerospace and automotive industries as well as the field of medical implants. Therefore, identifying the most effective joining technique is critically important to ensure that optimum life can be achieved by welded components. This is especially important for the aerospace industry where fatigue life of the welded joints is vital. This research identified two relatively new joining technologies for Titanium sheet, namely, Friction Stir Welding (FSW),a solid-state process, and Laser Beam Welding (LBW),a fusion joining process. It was therefore vitalto conduct a systematic study of these two processes and compare results to illustrate which process attributes to static and dynamic properties. This investigation was accomplished by varying the process heat input for both FSW and LBW. The main parameters used to control process heat input were rotational-and traverse speed for FSW and laser power and traverse speed for LBW. In FSW, a reaction torque was used to describe the process energy in order to achieve the plasticised material condition. Preliminary work was done to establish the influencing factors for a successful weld which included tool optimisation but process optimisation was not discussed in elaborative detail. In LBW, traverse speed was identified as the critical control parameter to ensure good weld penetration. Weld width was recorded as it showed strong correlation to heat input rates. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, Mechanical Engineering, 2021
- Full Text:
- Date Issued: 2015-03
Analytical evaluation of the effect of aggregate variation on Asphalt Mixture Properties
- Authors: Van Eck, Elandre
- Date: 2020
- Subjects: Aggregates (Building materials)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/49639 , vital:41743
- Description: This research study aimed to conduct an analytical evaluation of the effect of aggregate grading on the properties of asphalt mixtures. This was achieved by obtaining asphalt mix designs from approved civil engineering organisations and determining the relationship between the aggregate grading and the corresponding properties of the asphalt mix designs.
- Full Text: false
- Date Issued: 2020
- Authors: Van Eck, Elandre
- Date: 2020
- Subjects: Aggregates (Building materials)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/49639 , vital:41743
- Description: This research study aimed to conduct an analytical evaluation of the effect of aggregate grading on the properties of asphalt mixtures. This was achieved by obtaining asphalt mix designs from approved civil engineering organisations and determining the relationship between the aggregate grading and the corresponding properties of the asphalt mix designs.
- Full Text: false
- Date Issued: 2020
The design of a ritual precinct for the Zion Christian Church (ZCC) in the Swartkops Nature Reserve, Gqeberha:
- Authors: Bezuidenhout, Lee Vicky
- Date: 2022-04
- Subjects: Church buildings --South Africa --Port Elizabeth-- Designs and plans , Zionist Christian Church
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/57425 , vital:57758
- Description: Man and nature have become disconnected over the years, as man relies more on the advances of the technical age and less on connections to the natural world. Through this disconnect, nature is bearing the consequences and is in a state of decay. As part of the cosmos, the natural envi-ronment is inherently imbued with sacredness; this sacred nature often manifesting itself within the very structure of the earth. Importance is then placed on how we po-sition ourselves and our holy places within their natural environment in order to set a precedent for the rest of our built environments. This treatise positions itself within ecology and the sacred. It focuses on the particulars of sacredscapes and pilgrimages within a context of Afri-can landscapes and African religions. This encompasses both the built and unbuilt elements of sacred architecture as well as sacredscapes through the reflection of cosmic rhythms, manifest order and harmony in order to create a holistic living organism aware of both the “real” and the sacred. Through its roots in holistic design, is sacredscapes align very closely to that of the ecological paradigm and the creation of integrated ecosystems. Sacred place often realised through the continuation of ritual practice. These rituals are a crucial part of African religions and most often find themselves in or associated with their natural environment. Thus, this is where the focus of the treatise lies - in the ritual cleansing ceremonies of the Zion Christian Church carried out in the Swartkops River. Ritual precincts and the creation of sacredscapes as a tool to reintegrate nature into the sacred will be explored. The intervention presents itself as an emergent ecosystemic architecture creating a sacred space, at the water’s edge, imbued with the Afro-Christian narrative of the Zion Christian Church. , Thesis (MArch)-- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Bezuidenhout, Lee Vicky
- Date: 2022-04
- Subjects: Church buildings --South Africa --Port Elizabeth-- Designs and plans , Zionist Christian Church
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/57425 , vital:57758
- Description: Man and nature have become disconnected over the years, as man relies more on the advances of the technical age and less on connections to the natural world. Through this disconnect, nature is bearing the consequences and is in a state of decay. As part of the cosmos, the natural envi-ronment is inherently imbued with sacredness; this sacred nature often manifesting itself within the very structure of the earth. Importance is then placed on how we po-sition ourselves and our holy places within their natural environment in order to set a precedent for the rest of our built environments. This treatise positions itself within ecology and the sacred. It focuses on the particulars of sacredscapes and pilgrimages within a context of Afri-can landscapes and African religions. This encompasses both the built and unbuilt elements of sacred architecture as well as sacredscapes through the reflection of cosmic rhythms, manifest order and harmony in order to create a holistic living organism aware of both the “real” and the sacred. Through its roots in holistic design, is sacredscapes align very closely to that of the ecological paradigm and the creation of integrated ecosystems. Sacred place often realised through the continuation of ritual practice. These rituals are a crucial part of African religions and most often find themselves in or associated with their natural environment. Thus, this is where the focus of the treatise lies - in the ritual cleansing ceremonies of the Zion Christian Church carried out in the Swartkops River. Ritual precincts and the creation of sacredscapes as a tool to reintegrate nature into the sacred will be explored. The intervention presents itself as an emergent ecosystemic architecture creating a sacred space, at the water’s edge, imbued with the Afro-Christian narrative of the Zion Christian Church. , Thesis (MArch)-- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2022
- Full Text:
- Date Issued: 2022-04
Optical diamond turning of rapidly solidified aluminium alloy grade - 431
- Authors: Oyekunle, Funsho Adekunle
- Date: 2020
- Subjects: Aluminum alloys
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/46860 , vital:39670
- Description: The high demand for ultraprecision machining systems is increasing day by day. The technology leads to increased productivity and quality manufactured products, with an excellent surface finish. Therefore, these products are in demand in many industrial fields such as space, national defence, the medical industry and other high-tech industries. Single point diamond turning (SPDT) is the core technology of ultraprecision machining, which makes use of single-point crystalline diamond as a cutting tool. This technique is used for machining an extensive selection of complex optical surfaces and other engineering products with a quality surface finish. SPDT can achieve dimensional tolerances in order of 0.01um and surface roughness in order of 1nm. SPDT is not restricted, but mostly applicable, to non-ferrous alloys; due to their reflective properties and microstructure that discourages tool wear. The focus of this study is the development of predictive optimisation models, used to analyse the influence of machining parameters (speed, feed, and depth of cut) on surface roughness. Moreover, the study aims to obtain the optimal machining parameters that would lead to minimum surface roughness during the diamond turning of Rapidly Solidified Aluminium (RSA) 431. In this study, Precitech Nanoform 250 Ultra grind machine was used to perform two experiments on RSA 431. The first machining process, experiment 1, was carried out using pressurized kerosene mist; while experiment 2 was carried out with water as the cutting fluid. In each experiment, machine parameters were varied at intervals and the surface roughness of the workpiece was measured at each variation. The measurements were taken through a contact method using Taylor Hobson PGI Dimension XL surface Profilometer. Acoustic emission (AE) was employed as a precision sensing technique – to optimize the machining quality process and provide indications of the expected surface roughness. The results obtained revealed that better surface roughness can be generated when RSA 431 is diamond-turned using water as a cutting fluid, rather than kerosene mist. Predictive models for surface roughness were developed for each experiment, using response surface methodology (RSM) and artificial neural networks (ANN). Moreover, RSM was used for optimisation. Time domain features acquired from AE signals, together with the three cutting parameters, were used as input parameters in the ANN design. The results of the predictive models show a close relationship between the predicted values and the experimental values for surface roughness. The developed models have been compared in terms of accuracy and cost of computation - using the mean absolute percentage error (MAPE).
- Full Text:
- Date Issued: 2020
- Authors: Oyekunle, Funsho Adekunle
- Date: 2020
- Subjects: Aluminum alloys
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/46860 , vital:39670
- Description: The high demand for ultraprecision machining systems is increasing day by day. The technology leads to increased productivity and quality manufactured products, with an excellent surface finish. Therefore, these products are in demand in many industrial fields such as space, national defence, the medical industry and other high-tech industries. Single point diamond turning (SPDT) is the core technology of ultraprecision machining, which makes use of single-point crystalline diamond as a cutting tool. This technique is used for machining an extensive selection of complex optical surfaces and other engineering products with a quality surface finish. SPDT can achieve dimensional tolerances in order of 0.01um and surface roughness in order of 1nm. SPDT is not restricted, but mostly applicable, to non-ferrous alloys; due to their reflective properties and microstructure that discourages tool wear. The focus of this study is the development of predictive optimisation models, used to analyse the influence of machining parameters (speed, feed, and depth of cut) on surface roughness. Moreover, the study aims to obtain the optimal machining parameters that would lead to minimum surface roughness during the diamond turning of Rapidly Solidified Aluminium (RSA) 431. In this study, Precitech Nanoform 250 Ultra grind machine was used to perform two experiments on RSA 431. The first machining process, experiment 1, was carried out using pressurized kerosene mist; while experiment 2 was carried out with water as the cutting fluid. In each experiment, machine parameters were varied at intervals and the surface roughness of the workpiece was measured at each variation. The measurements were taken through a contact method using Taylor Hobson PGI Dimension XL surface Profilometer. Acoustic emission (AE) was employed as a precision sensing technique – to optimize the machining quality process and provide indications of the expected surface roughness. The results obtained revealed that better surface roughness can be generated when RSA 431 is diamond-turned using water as a cutting fluid, rather than kerosene mist. Predictive models for surface roughness were developed for each experiment, using response surface methodology (RSM) and artificial neural networks (ANN). Moreover, RSM was used for optimisation. Time domain features acquired from AE signals, together with the three cutting parameters, were used as input parameters in the ANN design. The results of the predictive models show a close relationship between the predicted values and the experimental values for surface roughness. The developed models have been compared in terms of accuracy and cost of computation - using the mean absolute percentage error (MAPE).
- Full Text:
- Date Issued: 2020
The effectiveness of arbitration practice relative to South African construction
- Authors: Bvumbwe, Chikumbutso
- Date: 2015
- Subjects: Arbitration, Industrial -- South Africa Dispute resolution (Law) -- South Africa , Construction industry -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/47981 , vital:40460
- Description: The study investigated the arbitration practice relative to the South African construction industry. Most of the construction contracts include an arbitration clause in the contract document as an instrument to be used for resolving disputes. The aim is to resolve disputes between the parties with minimum costs and within a reasonable period. Some parties opt to involve legal counsel in the process which has a potential of affecting time and cost. The literature review focuses on arbitration, in the construction industry, with a particular focus on how effective the methods are in terms of cost, time and the relationship between the disputing parties, the impact of using legal counsel during the arbitration process versus not involving legal counsel, the arbitration clause not specifying when to declare a dispute, and the perception of construction professionals on arbitration. The study was based on closed-ended questionnaires distributed among senior construction professionals including, architects, quantity surveyors, construction managers, project managers and practising attorneys. 61 respondents completed the questionnaire. The respondents were asked to comment on the effectiveness of alternative dispute resolution, cost, time, causes of disputes, and impacts of disputes. The cost of arbitration seems to escalate as a result of legal counsel being involved during the arbitration procedures. The time factor also seems to be prolonged. A notable finding indicates that the arbitration clause in the contract document should specify when to declare the dispute. The survey was conducted and limited to the Gauteng Province in South Africa. Findings are of value to clients, contractors and consultants and provides a basis for addressing arbitration effectively in the construction industry.
- Full Text:
- Date Issued: 2015
- Authors: Bvumbwe, Chikumbutso
- Date: 2015
- Subjects: Arbitration, Industrial -- South Africa Dispute resolution (Law) -- South Africa , Construction industry -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/47981 , vital:40460
- Description: The study investigated the arbitration practice relative to the South African construction industry. Most of the construction contracts include an arbitration clause in the contract document as an instrument to be used for resolving disputes. The aim is to resolve disputes between the parties with minimum costs and within a reasonable period. Some parties opt to involve legal counsel in the process which has a potential of affecting time and cost. The literature review focuses on arbitration, in the construction industry, with a particular focus on how effective the methods are in terms of cost, time and the relationship between the disputing parties, the impact of using legal counsel during the arbitration process versus not involving legal counsel, the arbitration clause not specifying when to declare a dispute, and the perception of construction professionals on arbitration. The study was based on closed-ended questionnaires distributed among senior construction professionals including, architects, quantity surveyors, construction managers, project managers and practising attorneys. 61 respondents completed the questionnaire. The respondents were asked to comment on the effectiveness of alternative dispute resolution, cost, time, causes of disputes, and impacts of disputes. The cost of arbitration seems to escalate as a result of legal counsel being involved during the arbitration procedures. The time factor also seems to be prolonged. A notable finding indicates that the arbitration clause in the contract document should specify when to declare the dispute. The survey was conducted and limited to the Gauteng Province in South Africa. Findings are of value to clients, contractors and consultants and provides a basis for addressing arbitration effectively in the construction industry.
- Full Text:
- Date Issued: 2015
Implementation of technological innovations within the South African construction industry
- Authors: Koopman, Kelly Leigh
- Date: 2023-04
- Subjects: Technological innovations , construction industry -- South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60960 , vital:69301
- Description: In South Africa the construction industry has grown by more than 15% per annum over the past five-years and the construction industry is facing several pressures to decrease costs, improve productivity and to develop a competitive edge in terms of quality of service and customer satisfaction. Faced with a growing demand for service delivery the industry must seek new and improved ways to stay competitive in this market space. By effectively analysing the construction market all role players within the AEC industry can adopt new trends and techniques being implemented by either their foreign counterparts or direct competitors. One of these trends within the industry is technological innovations; each designed to play a beneficial role in construction industry advancements. It is clear that our industry is moving forward at an alarming rate, yet our foreign counterparts seem to be one step ahead. Based on the 2010 Soccer World Cup it was clear that the South African AEC Industry had the ability to conform and deliver on world class infrastructure, yet we still seem to have a slow adoption rate surrounding technological innovations. Investigating the depth of knowledge based around the most popular technological innovations currently being implemented can provide a clear view as to what S.A industry role players see as potentially profitable within our marketplace and the steps that could be taken to provide further research pertaining to those technological innovations which are being overlooked. Establishing the most prominent barriers preventing technological adoption within the South African AEC Industry can effectively be compared with those faced by foreign counterparts to mirror their solutions to similar problems. Finally, by establishing whether resistance to a changing environment plays a vital role in the hindrance to technological adoption one can access the extent to which the AEC Industry may effectively change based on a projected industry time frame. , Thesis (MSc) -- Faculty of Engineering, the Built Environment and Technology, School of the Built Environment, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Koopman, Kelly Leigh
- Date: 2023-04
- Subjects: Technological innovations , construction industry -- South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60960 , vital:69301
- Description: In South Africa the construction industry has grown by more than 15% per annum over the past five-years and the construction industry is facing several pressures to decrease costs, improve productivity and to develop a competitive edge in terms of quality of service and customer satisfaction. Faced with a growing demand for service delivery the industry must seek new and improved ways to stay competitive in this market space. By effectively analysing the construction market all role players within the AEC industry can adopt new trends and techniques being implemented by either their foreign counterparts or direct competitors. One of these trends within the industry is technological innovations; each designed to play a beneficial role in construction industry advancements. It is clear that our industry is moving forward at an alarming rate, yet our foreign counterparts seem to be one step ahead. Based on the 2010 Soccer World Cup it was clear that the South African AEC Industry had the ability to conform and deliver on world class infrastructure, yet we still seem to have a slow adoption rate surrounding technological innovations. Investigating the depth of knowledge based around the most popular technological innovations currently being implemented can provide a clear view as to what S.A industry role players see as potentially profitable within our marketplace and the steps that could be taken to provide further research pertaining to those technological innovations which are being overlooked. Establishing the most prominent barriers preventing technological adoption within the South African AEC Industry can effectively be compared with those faced by foreign counterparts to mirror their solutions to similar problems. Finally, by establishing whether resistance to a changing environment plays a vital role in the hindrance to technological adoption one can access the extent to which the AEC Industry may effectively change based on a projected industry time frame. , Thesis (MSc) -- Faculty of Engineering, the Built Environment and Technology, School of the Built Environment, 2023
- Full Text:
- Date Issued: 2023-04
Applying blockchain technology to aspects of electronic health records in South Africa: lessons learnt
- Authors: Adlam, Ryno
- Date: 2020
- Subjects: Blockchains (Databases) , Database security Data protection Medical records -- Data processing
- Language: English
- Type: Thesis , Masters , MIT
- Identifier: http://hdl.handle.net/10948/45996 , vital:39405
- Description: The purpose of this study was to explore the applicability of blockchain technology as a viable alternative for the secure storage and distribution of electronic health records in a South African context. The adoption of electronic health records (EHRs) has grown over recent years. Electronic health records (EHRs) can be seen as electronic versions of patients’ medical history. EHRs promise benefits such as improving the quality of care, reducing medical errors, reducing costs, saving time, and enhancing the availability and sharing of medical records. Blockchain, in simple terms, could be seen as a distributed database controlled by a group of individuals. Blockchain technology differs from other distributed ledger technology by bundling unrelated data into blocks that are chained together in a linked-list manner, hence the name blockchain. Blockchain technology strives to provide desirable features, such as decentralization, immutability, audibility, and transparency. EHRs are traditionally constructed with a cloud-based infrastructure to promote the storing and distribution of medical records. These medical records are commonly stored in a centralized architecture, such as a relational database. The centralized architecture employed by EHRs may present a single point of failure. These kinds of failures may lead to data-breaches. The cloud-based infrastructure is effective and efficient from an availability standpoint. The increased availability of electronic health records has brought forth challenges related to the security and privacy of the patient’s medical records. The sensitive nature of EHRs attracts the attention of cyber-criminals. There has been a rise in the number of data breaches related to electronic health records. The traditional infrastructure used by electronic health records can no longer ensure the privacy and security of patient’s medical records. To determine whether blockchain is a viable alternative to these approaches, the main objective of this study was to compile a technical report on the applicability of aspects of blockchain technology to the secure storage and distribution of electronic health records. The study first conducted a literature review to gather background on the current state of electronic health records and blockchain technology. The results of the literature review were used to compile an initial report. Experiments were conducted with various aspects of blockchain technology to build a technical baseline and to ultimately validate the initial report. The insights gained from the experiments served to refine the initial report into a final technical report. The final deliverable of this study was to devise a technical report. The technical report serves as a generalized overview of the applicability of blockchain technology as a secure storage and distribution mechanism for electronic health records. The main topics covered by the technical report to outline the applicability of blockchain technology to EHRs are as follows: authentication, authorization, audit log, storage and transactions. The insights gained from the study illustrate that permissioned blockchain technology can enhance the traditional AAA security scheme employed by traditional EHRs. The AAA security scheme entails the use of certificate-based authentication and attributebased access control for authorization. Audit logs can be stored in a semi-decentralized architecture that can enhance the security and privacy of audit logs. Using blockchain technology for storing electronic health records might not be a viable alternative to traditional EHRs architecture. Blockchain technology violates certain privacy regulations as information is stored in a permanent manner. Furthermore, blockchain technology is not optimized for dealing with large volumes of data. However, blockchain technology could be used to store a cryptographic hash of electronic health records to ensure the integrity of records. Permissioned blockchain technology can enhance the EHRs transaction process by transacting health records in a peer-to-peer infrastructure. In doing so, the above-mentioned AAA security scheme can enhance the security, confidentiality, and integrity of electronic health records shared across organizational bounds.
- Full Text:
- Date Issued: 2020
- Authors: Adlam, Ryno
- Date: 2020
- Subjects: Blockchains (Databases) , Database security Data protection Medical records -- Data processing
- Language: English
- Type: Thesis , Masters , MIT
- Identifier: http://hdl.handle.net/10948/45996 , vital:39405
- Description: The purpose of this study was to explore the applicability of blockchain technology as a viable alternative for the secure storage and distribution of electronic health records in a South African context. The adoption of electronic health records (EHRs) has grown over recent years. Electronic health records (EHRs) can be seen as electronic versions of patients’ medical history. EHRs promise benefits such as improving the quality of care, reducing medical errors, reducing costs, saving time, and enhancing the availability and sharing of medical records. Blockchain, in simple terms, could be seen as a distributed database controlled by a group of individuals. Blockchain technology differs from other distributed ledger technology by bundling unrelated data into blocks that are chained together in a linked-list manner, hence the name blockchain. Blockchain technology strives to provide desirable features, such as decentralization, immutability, audibility, and transparency. EHRs are traditionally constructed with a cloud-based infrastructure to promote the storing and distribution of medical records. These medical records are commonly stored in a centralized architecture, such as a relational database. The centralized architecture employed by EHRs may present a single point of failure. These kinds of failures may lead to data-breaches. The cloud-based infrastructure is effective and efficient from an availability standpoint. The increased availability of electronic health records has brought forth challenges related to the security and privacy of the patient’s medical records. The sensitive nature of EHRs attracts the attention of cyber-criminals. There has been a rise in the number of data breaches related to electronic health records. The traditional infrastructure used by electronic health records can no longer ensure the privacy and security of patient’s medical records. To determine whether blockchain is a viable alternative to these approaches, the main objective of this study was to compile a technical report on the applicability of aspects of blockchain technology to the secure storage and distribution of electronic health records. The study first conducted a literature review to gather background on the current state of electronic health records and blockchain technology. The results of the literature review were used to compile an initial report. Experiments were conducted with various aspects of blockchain technology to build a technical baseline and to ultimately validate the initial report. The insights gained from the experiments served to refine the initial report into a final technical report. The final deliverable of this study was to devise a technical report. The technical report serves as a generalized overview of the applicability of blockchain technology as a secure storage and distribution mechanism for electronic health records. The main topics covered by the technical report to outline the applicability of blockchain technology to EHRs are as follows: authentication, authorization, audit log, storage and transactions. The insights gained from the study illustrate that permissioned blockchain technology can enhance the traditional AAA security scheme employed by traditional EHRs. The AAA security scheme entails the use of certificate-based authentication and attributebased access control for authorization. Audit logs can be stored in a semi-decentralized architecture that can enhance the security and privacy of audit logs. Using blockchain technology for storing electronic health records might not be a viable alternative to traditional EHRs architecture. Blockchain technology violates certain privacy regulations as information is stored in a permanent manner. Furthermore, blockchain technology is not optimized for dealing with large volumes of data. However, blockchain technology could be used to store a cryptographic hash of electronic health records to ensure the integrity of records. Permissioned blockchain technology can enhance the EHRs transaction process by transacting health records in a peer-to-peer infrastructure. In doing so, the above-mentioned AAA security scheme can enhance the security, confidentiality, and integrity of electronic health records shared across organizational bounds.
- Full Text:
- Date Issued: 2020
The design of a football Academy in Gelvandale, Gqeberha: Sports as a tool for social intergration
- Authors: Sauls,Eldridge
- Date: 2021-12
- Subjects: Sports facilities --South Africa-- Port Elizabeth -- Designs and plans , City planning--South Africa --Port Elizabeth -- Gelvandale
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58628 , vital:59969
- Description: In South African townships, youth from disadvantaged groups, lack suf ficient social and sporting facilities to spend their time. This situation exists in the Gelvandale township of Gqeberha. This treatise unfolds through the author’s interest in Gelvandale out of concern for how poorly the sense of urban space is, within the township context. The treatise will explore the nature of Gelvandale from a macro scale towards a precinct scale regarding connectivity, location, spatial organi sation, activities, the built fabric, and socio-economic conditions. Through exploration, it was identified that Gelvandale functions as an enclaved system within the context of Gqeberha. The issues affecting Gelvandale were identified as the dispersal of activities, urban sprawl, fragmentation, and lack of urban legibility. It was identified that dispersed activities are one of the major contribu tors to the poor urban environment. This treatise investigates the significance of a football academy in Gel vandale, and how it could have an influence on society and the built form. Addressing this issue will be an effective way to improve the ur ban environment, to provide an urban and architectural response in an attempt to reduce the dispersal activities in Gelvandale. Through the exploration of the nature of dispersed activities in Gelvandale, it was observed that most activities are dispersed throughout Gelvandale, indicating that there are areas with a higher cluster of certain activities. In response, a pro posed strategy had been conceptualised to propose the consolidation of activities that are connected through pedestrian movement paths. Gelvandale had been identified as having a high intensity of sporting facilities and is therefore been proposed as a concentrated facility for recreational and sporting activities. An appropriate site was then selected for the proposed devel opment. The resultant outcome of the program was a Football Academy. The conclusion was based on the conceptual urban strategy and the needs of the community. It was established that the facility should function as a major structural element in Gelvandale, leading to the investigation of positive urban spaces through the in terrogation of precedents. The cues from the interrogation were used to assist in structuring the nature of the proposed facility responding to the public realm and its urban and architectural issues. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Sauls,Eldridge
- Date: 2021-12
- Subjects: Sports facilities --South Africa-- Port Elizabeth -- Designs and plans , City planning--South Africa --Port Elizabeth -- Gelvandale
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58628 , vital:59969
- Description: In South African townships, youth from disadvantaged groups, lack suf ficient social and sporting facilities to spend their time. This situation exists in the Gelvandale township of Gqeberha. This treatise unfolds through the author’s interest in Gelvandale out of concern for how poorly the sense of urban space is, within the township context. The treatise will explore the nature of Gelvandale from a macro scale towards a precinct scale regarding connectivity, location, spatial organi sation, activities, the built fabric, and socio-economic conditions. Through exploration, it was identified that Gelvandale functions as an enclaved system within the context of Gqeberha. The issues affecting Gelvandale were identified as the dispersal of activities, urban sprawl, fragmentation, and lack of urban legibility. It was identified that dispersed activities are one of the major contribu tors to the poor urban environment. This treatise investigates the significance of a football academy in Gel vandale, and how it could have an influence on society and the built form. Addressing this issue will be an effective way to improve the ur ban environment, to provide an urban and architectural response in an attempt to reduce the dispersal activities in Gelvandale. Through the exploration of the nature of dispersed activities in Gelvandale, it was observed that most activities are dispersed throughout Gelvandale, indicating that there are areas with a higher cluster of certain activities. In response, a pro posed strategy had been conceptualised to propose the consolidation of activities that are connected through pedestrian movement paths. Gelvandale had been identified as having a high intensity of sporting facilities and is therefore been proposed as a concentrated facility for recreational and sporting activities. An appropriate site was then selected for the proposed devel opment. The resultant outcome of the program was a Football Academy. The conclusion was based on the conceptual urban strategy and the needs of the community. It was established that the facility should function as a major structural element in Gelvandale, leading to the investigation of positive urban spaces through the in terrogation of precedents. The cues from the interrogation were used to assist in structuring the nature of the proposed facility responding to the public realm and its urban and architectural issues. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
Learners’ perception on the effect of infrastructure development on academic performance in Port Elizabeth public secondary schools
- Authors: Goduka, Nomava
- Date: 2020
- Subjects: Infrastructure (Economics) -- Planning , School facilities -- South Africa -- Port Elizabeth -- Finance Academic achievement
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46053 , vital:39479
- Description: South Africa is striving to attain quality equal education; however, this ideal is affected by various factors such as discrimination, learner-related challenges (e.g. dilapidated rural schools, poverty, and violence), educator-related challenges (e.g. low morale and motivation, and poor administration and management of schools), and governmental issues (e.g. a lack of will, lacklustre attitudes, and an inability to deliver resources and/or services). While the National Department of Basic Education is battling to eradicate the backlog of school infrastructure and maintenance, mud schools are still prevalent in rural areas. The present state of poverty-stricken areas is most affected by the mentioned challenges and, as a result, it is necessary to determine the nature and extent of the consequences in terms of academic performance. This study, therefore, investigated the reality of the current rural school situation by investigating the perceptions of learners on the effect of infrastructure development on their academic performance in public secondary schools. Three secondary schools in the Motherwell area in Port Elizabeth were chosen for the research setting. A quantitative research approach was deemed suitable for the study, and a questionnaire was utilised for data collection. A total of 151 questionnaires were completed. The key findings derived from the data indicated that inadequate infrastructure has a negative impact on academic performance. Some of the key issues pertaining to infrastructure included inadequate leisure areas, laboratories, libraries, and sport fields. Overcrowding in classrooms were also found to be prevalent, and posed a major barrier to learning. The findings of the study provided insights into the reality of rural education and were used as a basis for offering recommendations that may assist stakeholders to improve the current situation.
- Full Text:
- Date Issued: 2020
- Authors: Goduka, Nomava
- Date: 2020
- Subjects: Infrastructure (Economics) -- Planning , School facilities -- South Africa -- Port Elizabeth -- Finance Academic achievement
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46053 , vital:39479
- Description: South Africa is striving to attain quality equal education; however, this ideal is affected by various factors such as discrimination, learner-related challenges (e.g. dilapidated rural schools, poverty, and violence), educator-related challenges (e.g. low morale and motivation, and poor administration and management of schools), and governmental issues (e.g. a lack of will, lacklustre attitudes, and an inability to deliver resources and/or services). While the National Department of Basic Education is battling to eradicate the backlog of school infrastructure and maintenance, mud schools are still prevalent in rural areas. The present state of poverty-stricken areas is most affected by the mentioned challenges and, as a result, it is necessary to determine the nature and extent of the consequences in terms of academic performance. This study, therefore, investigated the reality of the current rural school situation by investigating the perceptions of learners on the effect of infrastructure development on their academic performance in public secondary schools. Three secondary schools in the Motherwell area in Port Elizabeth were chosen for the research setting. A quantitative research approach was deemed suitable for the study, and a questionnaire was utilised for data collection. A total of 151 questionnaires were completed. The key findings derived from the data indicated that inadequate infrastructure has a negative impact on academic performance. Some of the key issues pertaining to infrastructure included inadequate leisure areas, laboratories, libraries, and sport fields. Overcrowding in classrooms were also found to be prevalent, and posed a major barrier to learning. The findings of the study provided insights into the reality of rural education and were used as a basis for offering recommendations that may assist stakeholders to improve the current situation.
- Full Text:
- Date Issued: 2020
Gentrification in the Nelson Mandela Bay central business district
- Mageda, Nomthandazo Christellene
- Authors: Mageda, Nomthandazo Christellene
- Date: 2020
- Subjects: Gentrification , Urban renewal-- South Africa -- Nelson Mandela Metropolitan Municipality Neighborhoods -- South Africa -- Nelson Mandela Metropolitan Municipality
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46119 , vital:39498
- Description: Gentrification is the process by which middle-class residents settle inner city neighborhood previously occupied by working-class. Gentrification has long been viewed as a consumption phenomenon, which is triggered by the urge of a certain fraction of a middle class – gentrifies – to create and maintain distinction. The research is designed as a socio-economic account to discuss the development in the NMB CBD area. In my research I examine the multiscalar forces affecting neighborhood change. This study will also examine the elements affecting and also the benefits of the gentrification process using quantitative methods. The CBD of the NMB represents certain universalities of gentrification in an old city. Today the city is no longer the regular of development but instead its progenitor. Adopting the language of “urbanization” and “cities of the future” will be considered in gearing the economic development arm. It does so by an extensive mapping of gentrification processes in Port Elizabeth. It also contains a smaller study on gentrification in Cape Town and also on an international level. The outcomes provide telling insights into gentrification as a generic process affecting not just low income areas (classical gentrification) and high income areas (super-gentrification), but also a wide-ranging spectrum of medium-income areas (ordinary gentrification). This study examines the interdependent variables of gentrification, going beyond a profitable analysis and incorporating the voice of all the actors involved in the process of gentrification, using quantitative analysis. By taking into account all perspectives, this study permits a holistic understanding of the social costs and benefits associated with gentrification. As multifaceted as gentrification is, it is becoming more pervasive in cities globally, a holistic tally of the social costs and benefits of revitalization projects becoming imperative. The study concludes with discussions of the contributions, limitations, recommendations for the NMB CBD and other cities that are considering revitalizing their urban cores and implications for future research.
- Full Text:
- Date Issued: 2020
- Authors: Mageda, Nomthandazo Christellene
- Date: 2020
- Subjects: Gentrification , Urban renewal-- South Africa -- Nelson Mandela Metropolitan Municipality Neighborhoods -- South Africa -- Nelson Mandela Metropolitan Municipality
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46119 , vital:39498
- Description: Gentrification is the process by which middle-class residents settle inner city neighborhood previously occupied by working-class. Gentrification has long been viewed as a consumption phenomenon, which is triggered by the urge of a certain fraction of a middle class – gentrifies – to create and maintain distinction. The research is designed as a socio-economic account to discuss the development in the NMB CBD area. In my research I examine the multiscalar forces affecting neighborhood change. This study will also examine the elements affecting and also the benefits of the gentrification process using quantitative methods. The CBD of the NMB represents certain universalities of gentrification in an old city. Today the city is no longer the regular of development but instead its progenitor. Adopting the language of “urbanization” and “cities of the future” will be considered in gearing the economic development arm. It does so by an extensive mapping of gentrification processes in Port Elizabeth. It also contains a smaller study on gentrification in Cape Town and also on an international level. The outcomes provide telling insights into gentrification as a generic process affecting not just low income areas (classical gentrification) and high income areas (super-gentrification), but also a wide-ranging spectrum of medium-income areas (ordinary gentrification). This study examines the interdependent variables of gentrification, going beyond a profitable analysis and incorporating the voice of all the actors involved in the process of gentrification, using quantitative analysis. By taking into account all perspectives, this study permits a holistic understanding of the social costs and benefits associated with gentrification. As multifaceted as gentrification is, it is becoming more pervasive in cities globally, a holistic tally of the social costs and benefits of revitalization projects becoming imperative. The study concludes with discussions of the contributions, limitations, recommendations for the NMB CBD and other cities that are considering revitalizing their urban cores and implications for future research.
- Full Text:
- Date Issued: 2020
Functional conversion of commercial buildings in South Africa
- Authors: Kuliti, Gerald
- Date: 2020
- Subjects: Commercial buildings -- South Africa , Buildings -- Conservation and restoration Buildings -- Maintenance and repair
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46075 , vital:39485
- Description: In the major cities of South Africa, there is a prevalence of originally built commercial buildings that are being converted into residential apartments or other industrial economic spaces. These secondary users refurbish the original structures to accommodate their new specialised requirements and this mostly happens after the buildings have been lying vacant for a long period of time. The study by Y.Long et al. (2011) narrates the changes in land use, identification of driving forces and the mapping of areas that are experiencing intense land use transformation. Properties that were developed for a focused particular use, were found to have been redeveloped within a few years for other functions. Subjects that were included in the sample were selected to meet specific criteria. The stakeholders had to meet the following criteria to be included in the sample: They were registered professionals in the built environment such as: Architecture, Engineering (civil, electrical, mechanical and structural), Quantity Surveying, Town Planning, Construction Management and Estate management The method that was used to collect data was self-completion questionnaire that was given out by electronic mail. After the data was collected, it was organised and analysed. For the analysis of closed-ended questions, an online programme called QuestionPro, was used, data was analysed by using descriptive statistics and frequency tables were drawn and from these, the data was presented in pie diagrams and bar graphs. While it is necessary to expand the horizons of the ever-growing global population, it is imperative that all stakeholders in the building industry work together to find sustainable solutions to residential and industrial development.
- Full Text:
- Date Issued: 2020
- Authors: Kuliti, Gerald
- Date: 2020
- Subjects: Commercial buildings -- South Africa , Buildings -- Conservation and restoration Buildings -- Maintenance and repair
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/46075 , vital:39485
- Description: In the major cities of South Africa, there is a prevalence of originally built commercial buildings that are being converted into residential apartments or other industrial economic spaces. These secondary users refurbish the original structures to accommodate their new specialised requirements and this mostly happens after the buildings have been lying vacant for a long period of time. The study by Y.Long et al. (2011) narrates the changes in land use, identification of driving forces and the mapping of areas that are experiencing intense land use transformation. Properties that were developed for a focused particular use, were found to have been redeveloped within a few years for other functions. Subjects that were included in the sample were selected to meet specific criteria. The stakeholders had to meet the following criteria to be included in the sample: They were registered professionals in the built environment such as: Architecture, Engineering (civil, electrical, mechanical and structural), Quantity Surveying, Town Planning, Construction Management and Estate management The method that was used to collect data was self-completion questionnaire that was given out by electronic mail. After the data was collected, it was organised and analysed. For the analysis of closed-ended questions, an online programme called QuestionPro, was used, data was analysed by using descriptive statistics and frequency tables were drawn and from these, the data was presented in pie diagrams and bar graphs. While it is necessary to expand the horizons of the ever-growing global population, it is imperative that all stakeholders in the building industry work together to find sustainable solutions to residential and industrial development.
- Full Text:
- Date Issued: 2020
Critical success factors for sustainability governance in transport infrastructure delivery in the City of Johannesburg Metropole
- Nemutandani, Tshimangadzo Mulisa
- Authors: Nemutandani, Tshimangadzo Mulisa
- Date: 2020
- Subjects: Transportation -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MSBE
- Identifier: http://hdl.handle.net/10948/49540 , vital:41734
- Description: In many engineering sectors, sustainability is a matter of concern. The construction sector is no exception, this is because of its ability to cause harmful effects to the environment through waste generation, energy and water consumption and several other forms of damage to the environment. This has led to experts in the sustainability field calling for a need of sustainable ways of carrying out construction. In this study, information about the sustainability culture and perceptions that exist in Johannesburg was extracted from data gathered from questionnaires based on various types of qualifications, knowledge, and experience of respondents in transport infrastructure delivery. A transportation official understanding the need for sustainable transportation and wishing to do something about it may likely be unable to do so. This is due to the fact that authorities do not always have the mandate, responsibility, power, or support to make decisions that are consistent with sustainable development. It can be said that key issues to sustainability governance of transport infrastructure delivery are: a lack of policy; and a lack of awareness in government, private, and consulting organisations that focus on the delivery of transport infrastructure. The lack of sustainable infrastructure delivery models creates the need to determine the important factors impacting on the governance of sustainable delivery of transport infrastructure in Johannesburg. The matrix has revealed that there is a ‘Moderate’ familiarity and ‘Average’ understanding of sustainability governance as a concept. From the data collected, it is also clear that the current transport infrastructure in Johannesburg is ‘Moderately’ effective at serving its sustainability purpose. This study hopes to be the basis upon which ground-breaking methods to encourage sustainability governance strategies for transport infrastructure projects and further studies are predicated.
- Full Text:
- Date Issued: 2020
- Authors: Nemutandani, Tshimangadzo Mulisa
- Date: 2020
- Subjects: Transportation -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MSBE
- Identifier: http://hdl.handle.net/10948/49540 , vital:41734
- Description: In many engineering sectors, sustainability is a matter of concern. The construction sector is no exception, this is because of its ability to cause harmful effects to the environment through waste generation, energy and water consumption and several other forms of damage to the environment. This has led to experts in the sustainability field calling for a need of sustainable ways of carrying out construction. In this study, information about the sustainability culture and perceptions that exist in Johannesburg was extracted from data gathered from questionnaires based on various types of qualifications, knowledge, and experience of respondents in transport infrastructure delivery. A transportation official understanding the need for sustainable transportation and wishing to do something about it may likely be unable to do so. This is due to the fact that authorities do not always have the mandate, responsibility, power, or support to make decisions that are consistent with sustainable development. It can be said that key issues to sustainability governance of transport infrastructure delivery are: a lack of policy; and a lack of awareness in government, private, and consulting organisations that focus on the delivery of transport infrastructure. The lack of sustainable infrastructure delivery models creates the need to determine the important factors impacting on the governance of sustainable delivery of transport infrastructure in Johannesburg. The matrix has revealed that there is a ‘Moderate’ familiarity and ‘Average’ understanding of sustainability governance as a concept. From the data collected, it is also clear that the current transport infrastructure in Johannesburg is ‘Moderately’ effective at serving its sustainability purpose. This study hopes to be the basis upon which ground-breaking methods to encourage sustainability governance strategies for transport infrastructure projects and further studies are predicated.
- Full Text:
- Date Issued: 2020
The State of Social Media Policy Awareness and Compliance at the Nelson Mandela University
- Authors: Ngcama, Lwando
- Date: 2020-12
- Subjects: Social Media , Awareness , Compliance -- Nelson Mandela University
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/49550 , vital:41735
- Description: The use of social media in higher education has both benefits and pitfalls. Higher education institutions are concerned about their staff and students’ use of social media and have thus resorted to implementing social media policies and guidelines. The Nelson Mandela University has implemented a social media policy and guidelines to inform and enforce the acceptable use of social media by its staff and students. In order to know whether staff and students of the Nelson Mandela University are aware of and compliant with its policy and guidelines, it is necessary to measure their level of awareness and compliance. Within this context, the primary objective of this study is to describe the state of awareness and compliance of staff and students at the Nelson Mandela University towards its social media policy and social media guidelines. In order to address the primary objective, the uses, benefits and risks of social media in higher education were identified through a literature review. The literature review revealed that social media is used in higher education to support and manage teaching and learning, marketing and crisis management, and for other purposes which may be specific to higher education stakeholders (both staff and students). The risks of social media use in higher education were revealed to be associated with institutional reputation, online content, privacy, intellectual property and the types of media shared by the stakeholders. The role of social media policies and guidelines in higher education was then described, based on a preliminary literature study which reviewed social media policies and guidelines implemented in higher education. Furthermore, the aspects of awareness and compliance towards social media policies and ii guidelines in higher education were also discussed. A general guide for the creation of social media policies and guidelines was identified and used to compare the nature and content of South African public universities’ social media policies and guidelines. Through comparative content analysis, the content of the universities’ social media policy and guidelines was compared, similarities and variances between were drawn, and the role of social media policies and guidelines was further explored. Finally, the knowledge of staff and students at the Nelson Mandela University in respect to the university’s social media policy and guidelines was measured and described through the use of a survey questionnaire and statistical analysis of the data collected. The results of the analysis indicated an overall medium level of awareness for both staff and students, with a mean average score of 3.2; while both groups demonstrated an overall high level of compliance towards the social media policy and guidelines, with a mean average score of 4.3. By addressing the primary objective, the contribution made by this study thus informs the Nelson Mandela University of the extent to which its social media policy and guidelines align with those of other South African public universities, and it indicates where the Nelson Mandela University should look to improve its staff and students’ awareness of and compliance with its social media policy and guidelines. , Thesis (MIT) -- Faculty of Engineering, the Built Environment and Technology, 2020
- Full Text:
- Date Issued: 2020-12
- Authors: Ngcama, Lwando
- Date: 2020-12
- Subjects: Social Media , Awareness , Compliance -- Nelson Mandela University
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/49550 , vital:41735
- Description: The use of social media in higher education has both benefits and pitfalls. Higher education institutions are concerned about their staff and students’ use of social media and have thus resorted to implementing social media policies and guidelines. The Nelson Mandela University has implemented a social media policy and guidelines to inform and enforce the acceptable use of social media by its staff and students. In order to know whether staff and students of the Nelson Mandela University are aware of and compliant with its policy and guidelines, it is necessary to measure their level of awareness and compliance. Within this context, the primary objective of this study is to describe the state of awareness and compliance of staff and students at the Nelson Mandela University towards its social media policy and social media guidelines. In order to address the primary objective, the uses, benefits and risks of social media in higher education were identified through a literature review. The literature review revealed that social media is used in higher education to support and manage teaching and learning, marketing and crisis management, and for other purposes which may be specific to higher education stakeholders (both staff and students). The risks of social media use in higher education were revealed to be associated with institutional reputation, online content, privacy, intellectual property and the types of media shared by the stakeholders. The role of social media policies and guidelines in higher education was then described, based on a preliminary literature study which reviewed social media policies and guidelines implemented in higher education. Furthermore, the aspects of awareness and compliance towards social media policies and ii guidelines in higher education were also discussed. A general guide for the creation of social media policies and guidelines was identified and used to compare the nature and content of South African public universities’ social media policies and guidelines. Through comparative content analysis, the content of the universities’ social media policy and guidelines was compared, similarities and variances between were drawn, and the role of social media policies and guidelines was further explored. Finally, the knowledge of staff and students at the Nelson Mandela University in respect to the university’s social media policy and guidelines was measured and described through the use of a survey questionnaire and statistical analysis of the data collected. The results of the analysis indicated an overall medium level of awareness for both staff and students, with a mean average score of 3.2; while both groups demonstrated an overall high level of compliance towards the social media policy and guidelines, with a mean average score of 4.3. By addressing the primary objective, the contribution made by this study thus informs the Nelson Mandela University of the extent to which its social media policy and guidelines align with those of other South African public universities, and it indicates where the Nelson Mandela University should look to improve its staff and students’ awareness of and compliance with its social media policy and guidelines. , Thesis (MIT) -- Faculty of Engineering, the Built Environment and Technology, 2020
- Full Text:
- Date Issued: 2020-12
Establishment of an information technology risk management framework within food manufacturing enterprises in South Africa
- Authors: Sandi, Siyabulela
- Date: 2020
- Subjects: Business enterprises -- Computer networks -- Security measures , Information technology -- Security measures Computer security Risk management
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/47128 , vital:39812
- Description: Enterprises of all kinds, regardless of the sector, are directly or indirectly dependent on Information Technology (IT) to carry out their daily activities. With this in mind, and correlated with the problem statement that it is “the lack of IT governance principles that lead to exposing enterprises to IT-related threats, vulnerabilities, and risks”, the objective of this study was to establish an Information Technology Risk Management Framework for enterprises within the Food manufacturing industry in South Africa that will ensure that IT-related threats, vulnerabilities, and risks are properly managed. In order to accomplish this, the research followed a process called design science research. The design science research paradigm was used to create a design artificial artefact in the form of a framework. The Nelson Mandela University – Design Science Framework Methodology (NMU-DSFM) was adopted since the objective of the study was to develop a framework. The study has revealed that enterprises within the sector are indeed lagging behind in terms of IT governance principles, hence an artefact called the IT Risk Management Framework for Enterprises within Food Manufacturing Industries in South Africa was developed.
- Full Text:
- Date Issued: 2020
- Authors: Sandi, Siyabulela
- Date: 2020
- Subjects: Business enterprises -- Computer networks -- Security measures , Information technology -- Security measures Computer security Risk management
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/47128 , vital:39812
- Description: Enterprises of all kinds, regardless of the sector, are directly or indirectly dependent on Information Technology (IT) to carry out their daily activities. With this in mind, and correlated with the problem statement that it is “the lack of IT governance principles that lead to exposing enterprises to IT-related threats, vulnerabilities, and risks”, the objective of this study was to establish an Information Technology Risk Management Framework for enterprises within the Food manufacturing industry in South Africa that will ensure that IT-related threats, vulnerabilities, and risks are properly managed. In order to accomplish this, the research followed a process called design science research. The design science research paradigm was used to create a design artificial artefact in the form of a framework. The Nelson Mandela University – Design Science Framework Methodology (NMU-DSFM) was adopted since the objective of the study was to develop a framework. The study has revealed that enterprises within the sector are indeed lagging behind in terms of IT governance principles, hence an artefact called the IT Risk Management Framework for Enterprises within Food Manufacturing Industries in South Africa was developed.
- Full Text:
- Date Issued: 2020
Mass housing delivery in addressing housing demand in eThekwini Municipality in KwaZulu-Natal
- Authors: Phiri, Mkhehleni Collen
- Date: 2020
- Subjects: Housing development -- South Africa -- eThekwini Municipality Metropolitan
- Language: English
- Type: Thesis , Masters , MSBE
- Identifier: http://hdl.handle.net/10948/49562 , vital:41736
- Description: This research involved studying and understanding the effectiveness and utility of the mass housing delivery approach to reduce housing demand in the eThekwini Municipality. The study employed a qualitative research approach incorporated with the case study method utilising questionnaires consisting of open and closed ended questions administered to ward councillors. Interviews were conducted with stakeholders involved with low-cost housing. Both structured and unstructured interview techniques were employed. It was found that most people migrate to the city to get closer to workplaces; fast tracking rental accommodation will assist in reducing housing demand. Involvement of community leaders like ward councillors in addressing community needs is essential. Availability of suitable land for housing heavily influences service delivery, government to source more land and make it available for housing. The limited available land can be fully utilised by constructing multi-storey buildings to accommodate more households. It was found that there is a lack of stakeholder involvement and participation in the design and planning of low-cost houses. Government to keep a proper register of people issued with government housing units. Monitoring and follow up during construction and after the handover of the houses found to be lacking on government officials. Eradication of corruption in all stakeholders and departments involved in housing delivery processes will show positive results in the housing sector. Transparency in the housing unit’s allocation is required to ensure proper allocation to needy and deserving beneficiaries.
- Full Text:
- Date Issued: 2020
- Authors: Phiri, Mkhehleni Collen
- Date: 2020
- Subjects: Housing development -- South Africa -- eThekwini Municipality Metropolitan
- Language: English
- Type: Thesis , Masters , MSBE
- Identifier: http://hdl.handle.net/10948/49562 , vital:41736
- Description: This research involved studying and understanding the effectiveness and utility of the mass housing delivery approach to reduce housing demand in the eThekwini Municipality. The study employed a qualitative research approach incorporated with the case study method utilising questionnaires consisting of open and closed ended questions administered to ward councillors. Interviews were conducted with stakeholders involved with low-cost housing. Both structured and unstructured interview techniques were employed. It was found that most people migrate to the city to get closer to workplaces; fast tracking rental accommodation will assist in reducing housing demand. Involvement of community leaders like ward councillors in addressing community needs is essential. Availability of suitable land for housing heavily influences service delivery, government to source more land and make it available for housing. The limited available land can be fully utilised by constructing multi-storey buildings to accommodate more households. It was found that there is a lack of stakeholder involvement and participation in the design and planning of low-cost houses. Government to keep a proper register of people issued with government housing units. Monitoring and follow up during construction and after the handover of the houses found to be lacking on government officials. Eradication of corruption in all stakeholders and departments involved in housing delivery processes will show positive results in the housing sector. Transparency in the housing unit’s allocation is required to ensure proper allocation to needy and deserving beneficiaries.
- Full Text:
- Date Issued: 2020