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A social realist study of employability development in engineering education

  • Authors: Nudelman, Gabrielle Reeve
  • Date: 2018
  • Subjects: Critical realism , Electrical engineering -- Study and teaching (Higher) -- South Africa -- Cape Town , Employability , Career education -- South Africa -- Cape Town , School-to-work transition -- South Africa -- Cape Town
  • Language: English
  • Type: thesis , text , Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/62884 , vital:28307
  • Description: This qualitative case study of a course pairing offered to final-year electrical engineering students at the University of Cape Town in 2015 was undertaken in order to better understand the ways in which participation in undergraduate courses can prepare engineering students for the workplace. The course pairing consisted of New Venture Planning and Professional Communication Studies. While the former aimed to expose students to the knowledge relating to starting a new business, the latter focused on teaching students how to create written and oral texts to support such an endeavour. Using Roy Bhaskar’s critical realism as a theoretical underlabourer, the study develops understandings regarding the generative mechanisms at work during the two courses. In support of this, the study posits an understanding of employability that moves beyond the acquisition of discrete workplace skills. Rather, employability is conceptualised as discursive transformation, with students being deemed “work-ready” when they develop discursive identities as engineers. Data generation took place by means of focus group and individual interviews, ethnographic observation and documentary research. Margaret Archer’s social realist tools – in particular, analytical dualism and the morphogenetic framework were used to trace the students’ transformations over the course pairing. It was argued that those students who developed discursive identities of engineers were those who, in Archer’s terms, emerged as social actors at the end of the course pairing. Two characteristics of the courses were found to enable this transformation: those parts that promoted deepened understanding of what the role of “engineer” entailed and the parts that provided spaces for students to develop their own personal identities. The findings of the study indicated that discursive identities as engineers were more likely to be developed through the group work and spaces for reflection engendered by the courses than as a result of the formal curriculum. The implications of the research are that, while a focus on employability in engineering education is valid and productive, this needs to be supported by opportunities for authentic learning experiences which afford students the opportunity to engage in learning that promotes real-life application of knowledge. , Thesis (PhD)--Rhodes University, Faculty of Education, Education, 2018
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  • Date Issued: 2018

The Trope of the Child: Rereading Trauma, Subjectivity and Embodiment in Contemporary Child-Centred African Narratives by Ahmadou Kourouma, Chris Abani, K. Sello Duiker and Yvonne Vera

  • Authors: Njovane, Thandokazi
  • Date: 2019
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164557 , vital:41134 , doi:10.21504/10962/164557
  • Description: Thesis (PhD)--Rhodes University, Humanities, Literary Studies in English, 2019
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  • Date Issued: 2019

An evaluation of the cytotoxic activities of novel artemisinin derivatives: towards targeted therapies for triple-negative breast cancers (TNBC)

  • Authors: Kajewole, Deborah Ifeoluwa
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163329 , vital:41029 , doi:10.21504/10962/163329
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020.
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  • Date Issued: 2020

Application of In Vitro Release Testing (IVRT) and a dermatopharmacokinetic approach (tape stripping) for the assessment of Metronidazole topical formulations

  • Authors: Rath, Seeprarani Prabirkumar
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164617 , vital:41148 , doi:10.21504/10962/164617
  • Description: Thesis (PhD)--Rhodes University, Faculty of Pharmacy, Pharmaceutics, 2020
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  • Date Issued: 2020

Assessment of the microbial quality of various domestic rainwater harvesting systems and the suitability of a nano based treatment method

  • Authors: Malema, Mokaba Shirley
  • Date: 2020
  • Subjects: Escherichia coli , Water harvesting , Microbial contamination , Water Purification , Physicochemical process
  • Language: English
  • Type: thesis , text , Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/110218 , vital:33249 , https://dx.doi.org/10.21504/10962/110218
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Chemistry, 2020. , In most developing countries, people from rural and peri-urban settlements depend on harvested rainwater (HRW) as an alternative water source for drinking and other household purposes. Despite this reliance, there is little monitoring of the microbial quality of HRW in these areas. The most important issue in relation to using untreated harvested rainwater for drinking and other domestic purposes is the potential public health risks associated with microbial pathogens. Unlike chemical contamination, microbial contamination my lead to disease occurring rapidly, hence the need for frequent monitoring. Thus, the current study investigated the microbial quality of various domestic rainwater harvesting systems and the suitability of a nano based treatment method. The first experiments involved determining the microbial (Escherichia coli) and physicochemical quality (pH, turbidity, nitrate and chemical oxygen demand (COD)) of HRW in the Eastern Cape Province, South Africa. Samples were collected from 11 tanks situated at the Rhodes University, Kenton-on-sea (coastal) and in homes in the Grahamstown area on a weekly basis between June and September 2016. The Colilert-18®/Quanti-tray® 2000 system was used for enumeration of E. coli while physicochemical parameters were measured using commercial kits. Results showed that all samples were contaminated with varying concentrations of E. coli ranging from 7 to 1055 MPN/100 mL. Physicochemical analysis revealed that pH ranged from 5.6 to 7.6 and Turbidity values obtained for all tanks were below 5 NTU except for tank 4 (5.12 ± 4.96 NTU) and 7 (5.58 ± 8.19 NTU). Nitrate levels (range: 5.95 to 28.12 mg L-1) and COD (range: 66.53 to 191.12 mg L-1) were higher than the recommended South African drinking water quality guidelines in most of the tanks. In the second experiments, the objective was to determine whether a modified hydrogen sulphide (H2S) test kit with an improved detection rate is an effective preliminary screening qualitative test that can be used for rainwater quality monitoring. The hydrogen sulphide method is a low-cost microbiological field-based test which can be used in areas where water testing facilities are limited. Harvested rainwater samples were collected from various tanks in the Eastern Cape and tested for contaminants of faecal origin using the modified hydrogen sulphide test kit, Colilert-18/Quanti-tray®/2000 and membrane filtration technique. Faecal coliforms were measured using membrane filtration, E. coli was measured using Colilert and correspondence rates were calculated with results of the improved hydrogen sulphide test kit. E. coli results ranged from <1 – >2419.6 MPN/100 mL while the faecal coliforms ranged from 0 – >300 CFU/mL. The agreement rate with hydrogen sulphide test and membrane filtration was 88% while the agreement rate for the Colilert and hydrogen sulphide test was 76%. The third experiments investigated the prevalence of pathogenic E. coli strains and their antimicrobial resistance patterns in HRW tanks in the Eastern Cape, South Africa. E. coli isolates obtained in the first experiments were further screened for their virulence potentials using polymerase chain reaction (PCR) and subsequently tested for antibiotic resistance using the disc-diffusion method against 11 antibiotics. The pathotype most detected was the neonatal meningitis E. coli (NMEC) (ibeA 28%) while pathotype enteroaggregative E. coli (EAEC) was not detected. The highest resistance of the E. coli isolates was observed against Cephalothin (76%). All tested pathotypes were susceptible to Gentamicin, and 52% demonstrated multiple-antibiotic resistance (MAR). The fourth experiments shed light on the occurrence of Legionella, zoonotic and fungal pathogens in the rainwater harvesting systems (RWHS) situated in different regions of South Africa. Rainwater samples were collected in urban and semi-urban areas from tanks situated in various areas in South Africa (Johannesburg, Pretoria and Grahamstown). Pathogenic organisms investigated were Salmonella, Shigella, Vibrio cholerae, Legionella and fungal isolates. Pure isolates were obtained and screened using PCR. Results revealed the presence of pathogenic bacteria and fungi in all the tested RWHS. In Grahamstown the most detected pathogen was Salmonella (73%) while Vibrio Cholerae was not detected. All the tested pathogens were present from the RWHS situated in Pretoria. Shigella was not detected from the RWHS in Johannesburg while others were detected. Identification of fungal isolates from HRW showed the presence of pathogenic fungi such as Aspergillus fumigatus, Cryptococcus laurentii, Aureobasidium pullulans and Mucor circinelloides. The last experiments, focussed on exploring a suitable treatment method for HRW where a nano compound quaternary imidazolium modified montmorillonite (MMT) was used as a potential household rainwater treatment option. Harvested rainwater samples were collected from the RWHS situated at the Council for Scientific and Industrial Research (CSIR), Pretoria South Africa. River and borehole water samples were included in the study to check the efficiency of the treatment method on various water sources. River water samples were collected from Olifants River, Witbank, South Africa while borehole water was collected from a privately-owned borehole in Pretoria. For inoculation studies, all the water sources were sterilised in batches of 1 and 2 L and inoculated with approximately 107 CFU/mL of overnight E. coli. Approximately 200 mg of the quaternary imidazolium modified MMT was added to the inoculated water and samples collected immediately after inoculation (time 0) and thereafter every hour for 5 hrs. The analyses were further conducted using unsterilised water samples (total bacterial count) and 500 mg of the treatment material. Complete inactivation of E. coli in sterilised HRW was achieved in 2 hrs for the 2 L water samples and 3 hrs for the 1 L water samples. Sterilised river water achieved complete E. coli inactivation in 4 hrs for the 1 L and 5 hrs for the 2 L samples while borehole water samples achieved complete E. coli inactivation in 5 hrs (2 L) and 6 hrs for the 1 L samples. In the unsterilised water sources (total bacteria), complete bacterial inactivation was observed in 5 hrs for both the 1 and 2 L harvested rainwater samples, 6 hrs in river water samples (both 1 and 2 L) and 8 hrs for borehole water samples (1 and 2 L). The results suggest that the treatment option was more efficient in harvested rainwater (required less time for bacterial inactivation compared to river and borehole water). The results of the current study are of public health concern since the use of untreated HRW for potable purposes may pose a risk of transmission of pathogenic and antimicrobial-resistant E. coli and other pathogenic organisms such as Salmonella, Shigella and Vibrio cholerae. It is therefore recommended that in cases where the tested harvested rainwater is used for potable purposes, simple treatment methods such as boiling and SODIS be applied so the harvested rainwater is fit for human consumption.
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  • Date Issued: 2020

Bioinformatic analysis of Aminoacyl tRNA Synthetases as potential antimalarial drug targets

  • Authors: Nyamai, Dorothy Wavinya
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164579 , vital:41142 , doi:10.21504/10962/164579
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020
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  • Date Issued: 2020

BODIPY dyes for use in nonlinear optics and optical sensing

  • Authors: Kubheka, Gugu Patience
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163352 , vital:41032 , doi:10.21504/10962/163352
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Department of Chemistry, 2020.
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  • Date Issued: 2020

CO2-induced woody thickening depends strongly on interacting abiotic and biotic factors

  • Authors: Raubenheimer, Sarah Lynn
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164646 , vital:41151 , doi:10.21504/10962/164646
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Botany, 2020
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  • Date Issued: 2020

Comparative analysis of the known Hop1b and the novel Hop1a isoforms of the Hop gene

  • Authors: Makhubu, Portia
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164311 , vital:41108 , doi:10.21504/10962/164311
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020
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  • Date Issued: 2020

Design of Immunobiosensors for Detection of Tumor-Associated Anti-P53 Autoantibodies: Method Development

  • Authors: Adeniyi, Omotayo Kayode
  • Date: 2020
  • Subjects: Lungs Cancer Early detection , Autoantibodies , Biosensors , Immunochemistry , Biochemical markers , p53 antioncogene
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/162988 , vital:41002 , 10.21504/10962/162988
  • Description: Thesis (PhD)--Rhodes University, Science Faculty, Department of Chemistry, 2020. , Detection and profiling of circulating tumor-associated autoantibodies (TAAbs) are useful for screening and early-stage diagnosis of asymptomatic lung cancer. Immunobiosensor technologies aimed to accomplish the highly sensitive, rapid and low-cost detection of TAAbs can improve the early-stage detection of lung cancer. Immunobiosensors for the detection of anti-P53-tumour associated autoantibodies have been developed in this work. The design of sensing interfaces with immobilized P53 protein (P53ag) as a sensing element layer on a solid interface was investigated. Several methods of detecting anti-P53-antibodies (anti-P53ab) were investigated. These methods are label-free detection using electrochemical impedance spectroscopy (EIS) and two label techniques. The label-free electrochemical techniques utilize gold electrode pre-modified with a conducting layer of electrochemically grafted phenylethylamine for covalent immobilization of P53ag. The limit of anti-P53ab detection with the label-free EIS was 103.0 pg.ml-1. The labeled technique developed utilizes fluorescent, and peroxidase-like nanomaterial labeled antibody as a detection probe. For the fluorescence detection, fluorescent silica nanoparticles were synthesized by overloading FITC into the silica matrix and conjugated to detection antibody (anti-IgG). The detection of the anti-P53ab was based on the dissolution of the silica nanoparticles to release the loaded dye as a signal amplification strategy. The fluorescence detection was carried out on a microplate, and magnetic bead modified P53-antigen platforms and limit of detection (LoD) were 42.0 fg.ml-1 and 3.3 fg.ml-1 for anti-P53ab; respectively. Fe3O4@SiNP-APTES-Au@Pd hybrid nanoparticles were synthesized, and their peroxidase-like activity and colorimetric detection were evaluated. The Fe3O4@SiNP-APTES-Au@Pd exhibited comparable activity to HRP. The Fe3O4@SiNP-APTES-Au@Pd was conjugated to protein-G-anti-IgG for the detection of anti-P53ab on a microplate and cellulose paper platforms. The LoD was 20.0 fg.ml-1 and 63.0 fg.ml-1 for the microplate and cellulose paper platform; respectively. The potential application of the designed immunobiosensor was evaluated in simulated serum samples. The developed sensors showed higher detection sensitivity, stability and had a lower detection limit for anti-P53ab when compared with the ELISA based detection. The results have provided alternative and effective quantification approaches to ELISA and a promising future for multiplexed detection of tumor-associated autoantibodies. The developed methodologies in this thesis could be applied for the detection of other autoantibodies in other cancer types and auto-immune diseases.
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  • Date Issued: 2020

Design of immunosensor for the detection of C-reactive protein using oriented antibody immobilization

  • Authors: Adesina, Abiola Olanike
  • Date: 2020
  • Subjects: Immunochemistry , Biosensors , C-reactive protein , Immunoassay , Cardiovascular system Diseases
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163080 , vital:41010 , https://dx.doi.org/10.21504/10962/163080
  • Description: Early diagnosis of cardiovascular diseases (CVDs) has been a major challenge since CVDs are clinically silent. The current methods available for the diagnosis are not sensitive enough at the onset of the disease. Also, the use of sophisticated equipments and experts in the result interpretation has created a lot of barriers to the early diagnosis of CVDs. Biomarkers detection using electrochemical immunoassay offers great advantages in terms of sensitivity, miniaturization and low cost. This can be integrated into portable devices which can be made available in the remote areas for easy assessment of health care services. The fabrication of piezoelectric and electrochemical immunosensors for the detection of C-reactive protein (a cardiac biomarker) are presented in this thesis. The electrochemical immunosensor investigates the effect of linkers chain length on the analytical performance of the immunosensor. The fabricated immunosensors were based on two simple and sensitive label-free impedimetric assay. Oriented immobilization of anti-CRP monoclonal antibody (mAb) unto gold surface was achieved using carbohydrate specific boronic ester reaction for enhanced capture and specific detection of CRP protein. Quartz crystal microbalance with dissipation (QCM-D) was employed to establish the immunocomplex formation between the mAb and CRP antigen. This was achieved by forming a self-assembled monolayer (SAM) of 4-mercaptophenylboronic acid (MPBA) onto the quartz crystal surface. The limit of detection (LoD) for the direct and sandwich immunoassay was 5.45 and 3.65 ng mL-1, respectively. The Au-MPBA-mAb/glucose immunosensor with the shortest chain length of boronic acid was fabricated. The use of SAM of 4-mercaptophenylboronic acid (MPBA) afforded a thio phenylboronic acid functionalized gold surface (Au-MPBA SAM). The anti-CRP-mAb capture antibody was immobilized in an oriented manner onto gold thiophenylboronic acid to yield an Au-MPBA-mAb surface. The non-specific boronic surface was blocked using glucose to yield an Au-MPBA-mAb/glucose. The modified gold surface could detect CRP antigen. The limit of detection (LoD) was found to be 9.82 and 6.23 ng mL-1 for the direct and sandwich immunoassay; respectively. The Au-MBA-APBA-mAb/glucose immunosensor was designed by forming a SAM of 4-mercaptobenzoic acid (MBA) onto gold electrode surface. The terminal -COOH group of the MBA SAM reacted with an amino (NH2) group the 4-aminophenylboronic acid (APBA) using EDC/NHS coupling. This was followed by the immobilization of the capture antibody and the blocking of non-specific binding sites using glucose. Improved analytical parameters were obtained with LoD for the direct and sandwich immunoassays found to be 2.90 and 1.20 ng mL-1; respectively. A more stable immunosensor utilizing electrochemical grafting was investigated for the fabrication of Au-PEA-SA-APBA-mAb/glucose. The enhanced stability of the immunosensor was through the electrochemical reduction of 4-aminoethyl benzene diazonium (AEBD) salt. The surface was further derivatized with succinic anhydride to have a carboxylic derivatized surface. Carbodiimide chemistry was used to form a covalent linkage between the APBA amine group and the surface -COOH terminal group to yield an Au-PEA-SA-APBA surface. The immobilization of mAb and glucose resulted in Au-PEA-SA-APBA-mAb/glucose immunosensor. For the detection and signal enhancement, the magnetic nanoparticles conjugated with anti-CRP polyclonal antibody (pAb) was prepared. The sandwich immunoassay was used to detect CRP by the first capture at Au-PEA-SA-APBA-mAb/glucose. This was followed by signal amplification using magnetic nanoparticles coated with a silica shell and conjugated to pAb (MNP-SiO-APTES-PBA-pAb/glucose). The limit of detection was found to be 560 pg mL-1 and much lower than sandwich immunosensor fabricated using SAMS. The signal enhancement, lower detection limits and high sensitivity were obtained due to the nanoparticles for the sandwich immunoassay. The linear range for all the fabricated immunosensor ranges from 10 – 100 ng mL-1. The sensitivity obtained for Au-MPBA-mAb/glucose, Au-MBA-APBA-mAb/glucose, and Au-PEA-SA-APBA-mAb/glucose were 0.691, 0.885, and 11.08 kΩ.ng-1.ml.cm-2 for the sandwich immunoassay. The piezoelectric immunosensor was regenerated using 0.1 M HCl without affecting the immobilized capture antibody. The real sample analysis was carried out in 10 % serum in a recovery study for all the fabricated immunosensor. The percentage of recovery was very close to 100 %. , Thesis (PhD)--Rhodes University, Science Faculty, Department of Chemistry, 2020.
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  • Date Issued: 2020

Development of paper-based aptasensors for detection of Plasmodium falciparum lactate dehydrogenase in malaria

  • Authors: Ogunmolasuyi, Adewoyin Martin
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164601 , vital:41147 , doi:10.21504/10962/164601
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biotechnology Innovation Centre, 2020
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  • Date Issued: 2020

Elucidation of a novel role for HSP70/HSP90 organising protein (Hop) in mRNA processing

  • Authors: Dingle, Laura Margaret Kirkpatrick
  • Date: 2020
  • Language: English
  • Type: thesis , text , Doctoral , Ph.D
  • Identifier: http://hdl.handle.net/10962/59173 , vital:27449 , doi:10.21504/10962/59173
  • Description: Thesis (PhD.)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020.
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  • Date Issued: 2020

Formulation and characterisation of a combination captopril and hydrochlorothiazide microparticulate dosage form for paediatric use

  • Authors: Chikukwa, Mellisa Tafadzwa Ruramai
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163216 , vital:41019 , doi:10.21504/10962/163216
  • Description: Thesis (PhD)--Rhodes University, Pharmacy Faculty, Department of Pharmaceutics, 2020
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  • Date Issued: 2020

Formulation, development and assessment of devil’s claw loaded phyto-elastosomes in thermo-responsive hydrogels

  • Authors: Ntemi, Pascal Vitalis
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164568 , vital:41139 , doi:10.21504/10962/164568
  • Description: Thesis (PhD)--Rhodes University, Faculty of Pharmacy, Pharmaceutics, 2020
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  • Date Issued: 2020

Hop as an anti-cancer drug target

  • Authors: Vaaltyn, Michaelone Chantelle
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164704 , vital:41156 , doi:10.21504/10962/164704
  • Description: Thesis (PhD)--Rhodes University, Biochemistry and Microbiology, 2020
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  • Date Issued: 2020

Long Waves of Strikes in South Africa: 1886–2019

Multiplexed Mass Spectrometry: Single, On-Bead, Detection Analysis Using MALDI-TOF MS

  • Authors: Twala, Busisiwe Victoria
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164693 , vital:41155 , doi:10.21504/10962/164693
  • Description: Thesis (PhD)--Rhodes University, Biochemistry and Microbiology, 2020
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  • Date Issued: 2020

Nutrient impacts on grasses and legumes growing in communal pasture soil in relation to mycorrhizal activity

  • Authors: Mkile, Zolani
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/164512 , vital:41125 , doi:10.21504/10962/164512
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020
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  • Date Issued: 2020

The Integration of Personally-owned Information and Communication Technologies (PICTs) for Teaching and Learning in Resource-Constrained Higher Education Environments – The Case of a Nigerian University

  • Authors: Lewis, Oláñrewájú Olúrotimi
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163582 , vital:41050 , doi:10.21504/10962/163582
  • Description: Thesis (PhD)--Rhodes University, Faculty of Commerce, Information Systems, 2020
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  • Date Issued: 2020
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