A thesis submitted to the Faculty of Engineering, University of the '\Vitwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophy / THIS STUDY identifies and evaluates factors that affect call connections in the South African public data networks, modelling these factors to aid data network planning. The research shows the relationship between the economic rank of each region served and the data communication resources required for that region. Moreover, it shows the resources required between regions. THE THRUST of this thesis is that the volume of cans from a region can be estimated from its economic ...k and more than 75% olthe variation in the volume of calls between regions can be explained using the ranks of the originating and terminating regions. To prove this, records of more than four million calls are accumulated for all regions of the South African packet switched data network. An appropriate filtering and aggregation method is developed. EXISTING growth models including the gravity model are separately examined. Based on probability and dimensional arguments, the Bell System growth model is selected. It is revealed that the success of this model depends on one premise being satisfied: this model tacitly anti implicitly assumes that the originating and terminating calls are statistically independent. RETURNING to the data network, it is found that the call connections (after filtering and aggregation) display dependence of destination on origin. Reasons for the dependence are discovered. Multiple linear regression reveals the nature of this dependence. Surprisingly, distance is not a factor. The importance of regional ranks and an inter-regional indicator variable are also discovered. FINALL Y, call volume from a node is shown to be directly linked with the weighted Gross Regional and Industrial Product of the region. This quantity, in tum, is inversely related to the rank of the region. Call connections are then modelled to be equal to the call connections within the first tanked region divided by the product of the originating region's rank and the terminating region's rank. This simple and economical model explains 76% of the variations that occur in call connections. It has proved its use by being included in the data transfer services product-line report. / Andrew Chakane 2018

M. Tech. Information Networks (Structured) / Universities are currently spending huge sums of money on ICT both acquiring and maintaining. However, much as huge sums are spent, several complaints and strikes from the stakeholders are still prevalent. The stakeholders who happen to be mostly students are ever complaining of poor and slow services. The university has experienced intermittent network connections, leaving the staff both administrators and lecturers in a major dilemma as they can't effectively and efficiently apply to their work. These upheavals have at many times ended up destructing academic programs and to some extent vandalizing of university property has been a common face. Hence, the need for the assessment of cloud computing that could provide a stable and dependable network connection. The major goal of this study was to develop a conceptual framework that will systematically organize the assessment of factors needed to determine cloud computing readiness at South African Universities.

Submitted in fulfillment of the requirements of the degree of Master of Technology: Information Technology, Durban University of Technology, 2013. / In this study, an investigation was conducted to determine an appropriate lightweight framework that could adequately support Very Small Enterprises (VSEs) in documenting their daily business transactions. The VSEs play a significant role in the socioeconomic development of nations by providing employment opportunities. They contribute to the Gross Domestic Product (GDP) and provide a platform for entrepreneurial skills advancement. However, VSEs have very little access to innovative Information and Communication Technology (ICT) that could help to address the unique challenges that prohibit their growth and sustainability. In many instances, the documentation of VSEs business transactions is still lacking. This deficiency promotes insufficient, unreliable and untraceable business transaction records which ultimately affect the smooth growth and sustainability of VSEs. Mobile technology provides the VSEs with a unique opportunity because of its support for mobility and low costs of system procurement. Moreover, mobile technology can enable easy connection, access and retrieval of VSE services even in the resource constrained environments anytime and anywhere. However, the inherent limitations of mobile devices such as device size, storage size, computing power and battery lifespan have forced many of the existing ICT business applications to continually rely on desktop computers. The desktop computer applications are huge, complex and not compatible with the current mobile devices. The Design Science Research (DSR) method was used to understand how VSEs conduct their daily business transactions, discover essential factors that influence the business processes of VSEs and derive a lightweight framework for mobile documentation of VSE business transactions. The lightweight framework was prototyped as ICT artefact and evaluated to determine the adoption of mobile applications by VSEs for documentation of daily business transactions. The evaluation results revealed the developed lightweight framework to be effective for mobile documentation of VSEs business transactions.

M. Tech. Business Information Systems / The banking sector allocates a great deal of their annual budget to Information Technology. To maintain and optimise activities such as software licensing, data security, business continuity and upgrading of computer hardware and general technology infrastructure to meet new organisational requirements, huge financial resources are deployed. One innovative approach to meeting these demands is using virtual desktop technology to extend the computer life, reduce IT costs, improve security and increase availability of technology. One may surmise from the experiences of these companies that if banks replace the current personal computers with virtual desktops they may realise the same benefits. With the introduction of Virtual Desktop Infrastructure (VDI) technology; the premise is that it will alleviate these issues currently faced by banks as all these functions can be done in one place instead of doing it on every individual PC. This study seeks to explore factors of VDI adoption and its impact in terms of reducing cost, hardware and software management, remote access, improved data security and recovery, better compliance and reduced energy consumption.

M. Tech. Business Information Systems / The integration of Information and Communication Technology (ICT) within South African schools created new possibilities for learners and educators to engage in new ways of information selection, gathering, sorting and analysis. However, the implementation of ICT in schools has had an impact on curriculum development and delivery of education around the world. The main objective of this study was to develop a framework for acceptance and use of E-learning by educators in South African secondary schools. This study intended to address the lack of interest shown by educators in integrating ICT into teaching and learning.

M. Tech. Business Administration / The aim of this research is to explore the factors that drives the adoption of cloud computing within a South African information technology user organisation. It also identifies benefits and risks associated with the adopting of cloud computing within an information and communication technology (ICT) from a South African company perspective.

Traditional network monitoring techniques suffer from a number of limitations. They are usually designed to solve the most general case, and as a result often fall short of expectation. This project sets out to provide the network administrator with a set of alternative tools to solve specific, but common, problems. It uses the network at Rhodes University as a case study and addresses a number of issues that arise on this network. Four problematic areas are identified within this network: the automatic determination of network topology and layout, the tracking of network growth, the determination of the physical and logical locations of hosts on the network, and the need for intelligent fault reporting systems. These areas are chosen because other network monitoring techniques have failed to adequately address these problems, and because they present problems that are common across a large number of networks. Each area is examined separately and a solution is sought for each of the problems identified. As a result, a set of tools is developed to solve these problems using a number of novel network monitoring techniques. These tools are designed to be as portable as possible so as not to limit their use to the case study network. Their use within Rhodes, as well as their applicability to other situations is discussed. In all cases, any limitations and shortfalls in the approaches that were employed are examined.

M. Tech. Business Information Systems / Currently there is a high demand in the banking environment for real time delivery of consistent, quality data for operational information. South African banks have the fastest growing use and demand for quality data; however, the bank still experiences data management related challenges and issues. It is argued that the existing challenges may be leveraged by having a sound data architecture framework. To this point, this study sought to address the data problem by theoretically conceptualizing a data architecture framework that may subsequently be used as a guide to improve data management. The purpose of the study was to explore and describe how data management challenges could be improved through Data Architecture.

Thesis (MComm)--Stellenbosch University, 2012. / ENGLISH ABSTRACT: In today's technologically advanced business environments, Information Technology (IT) has become the centre of most, if not all businesses' strategic and operational activities. It is for this reason that the King III report has dedicated a chapter to IT governance principles, in effect making the board of directors and senior management responsible for implementing such principles. King III's guidance on these principles is only described in broad terms and lack sufficient detail as how to implement these principles. Though various guidelines, in the form of IT control frameworks, -models and -standards exist, it remains highly theoretical in nature and companies tend to view these control frameworks, -models and -standards on an individual basis, implementing them in an ad hoc manner, resulting in the implementation of an inefficient IT governance system, that does not address the key strategic areas and risks in a business. The purpose of this study is to develop an IT best practices integrated framework which can assist management in implementing an effective IT governance system at both a strategic and operational level. The integrated framework was developed by performing a detailed literature review of a best practice control framework, -model and -standard, including its underlying processes. By combining and aligning the relevant processes of the control framework, -model and -standard to the business' imperatives, a framework was developed to implement IT governance principles at a strategic level. The integrated framework is extended to provide guidance on how to implement good IT controls at an operational level. The control techniques, of the applicable processes identified at a strategic level, are implemented as well as the controls around a company's various access paths, which are affected by a company's business imperatives. These access paths are controlled through the implementation of applicable configuration controls. By making use of the integrated framework which was developed, an effective and efficient IT governance system can be implemented, addressing all applicable IT risks relevant to the key focus areas of a business. / AFRIKAANSE OPSOMMING: In vandag se tegnologies gevorderde besigheids omgewings het Informasie Tegnologie (IT) die middelpunt geraak van die meeste, indien nie elke onderneming se strategiese en operasionele aktiwiteite nie. Dit is vir hierdie rede dat die King III verslag 'n hoofstuk aan die beginsels van IT korporatiewe beheer wy. Dié verslag hou die direkteure en bestuur verantwoordelik vir die implementering van hierdie beginsels. Die King III verslag verskaf egter slegs in breë trekke leiding in verband met die implementering van hierdie beginsels en 'n gebrek aan meer gedetailleerde beskrywings bestaan. Alhoewel verskeie riglyne, in die vorm van IT kontrole raamwerke, -modelle en -standaarde bestaan, bly dit steeds teoreties van aard en is maatskappye geneig om hierdie riglyne op 'n individuele vlak te hanteer en op 'n willekeurige wyse te implementeer. Hierdie proses lei tot die implementering van 'n ondoeltreffende IT korporatiewe beheerstelsel. Die doel van hierdie studie is om 'n geïntegreerde beste praktykraamwerk te ontwikkel wat deur die direkteure en bestuur van 'n onderneming gebruik kan word om op beide 'n strategiese en operasionele vlak 'n doeltreffende IT korporatiewe beheermaatstelsel in plek te stel. 'n Geïntegreerde raamwerk is ontwikkel deur 'n volledige literatuurstudie uit te voer, gebaseer op 'n beste praktyk IT kontrole raamwerk, -model en -standaard en die gepaardgaande prosesse. Deur die toepaslike prosesse van hierdie kontrole raamwerk, -model en -standaard te kombineer en te belyn met 'n besigheid se besigheidsimperatiewe, word IT korporatiewe beheerbeginsels op 'n strategiese vlak in plek gestel. Die geïntegreerde raamwerk sluit riglyne in om goeie IT kontroles op 'n operasionele vlak te implementeer. Die kontrole tegnieke, wat verbind word met die gepaardgaande prosesse wat tydens die strategiese vlak geïdentifiseerd is, word geimplementeer asook die die toepaslike konfigurasie kontroles oor die verskeie toegangspaaie wat beïnvloed word deur 'n besigheids se besigheidsimperatiewe. Deur gebruik te maak van die ontwikkelde geïntegreerde raamwerk kan alle geaffekteerde IT risikos nou aangespreek word en 'n doeltreffende IT korporatiewe beheerstelsel in plek gestel word.

Thesis (MBA)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: E-commerce in South Africa is currently experiencing considerable growth, as in the rest of the world. Substantial foreign investments are being made in selected South African online retail stores and the majority of businesses have an online presence to sell or promote their products and services. Yet, as e-commerce is a dynamic and relatively new industry, there is a need for South African companies to understand business model adaptation for e-commerce, and specifically for successful e-marketplace participation. Kalahari Marketplace was established in 2011 as a C:C platform for customers to sell books and media. In January 2014, this platform was expanded to a fully integrated B:C platform that enables third-party retailers to sell directly to Kalahari.com customers in various categories. The Kalahari Marketplace platform follows the same development outline as the very successful Amazon.com Marketplace platform in the United States. The premise is that sellers have an additional channel to sell to customers they would not normally have had, and customers benefit by having access to a wide product range and competitive pricing. The aim of this research study is to understand the typical business model of a successful e-marketplace participant. It furthermore set out to explore the success factors, which translate into value creation for the seller achieved through participation in an e-marketplace. This investigation was done through a case study approach by examining existing sellers retailing through Kalahari Marketplace. To achieve the research aim, qualitative, exploratory research was conducted. The research method involved a combination of primary and secondary research. Secondary research was conducted regarding the external environmental factors of Kalahari Marketplace sellers. Primary data was gathered through in-depth semi-structured interviews with Kalahari Marketplace sellers. The external environmental analysis for participating in an e-marketplace, such as Kalahari Marketplace, was overall positive, taking into consideration challenges such as expensive Internet and low Internet usage penetration. The key findings from the internal analyses were that participating in an e-marketplace has substantial benefits for a traditional retailer that wants to trade online. These advantages include transaction cost savings, exposure to new customers, and reduced marketing expenses. The following recommendations were made for successful e-marketplace participation: • Take an active involvement in e-marketplace listings; • Effective procurement and use of resources; • Excellent customer service; • Build reliable and cost effective delivery channels; and • Offer a wide and mixed product range. The research limitation of this study stated that Kalahari Marketplace is a moderately new B:C e-retailing platform; therefore, retailers are still learning to adapt. Suggested additional research involves a wide-reaching quantitative research into key success factors for e-marketplace participation from a South African perspective.