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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Investigating selected retrofitted and reused buildings in Johannesburg to determine their economic and environmental impact.

Steyn, Cornelia J. January 2014 (has links)
M. Tech. Architectural Technology / This research project focuses on determining the costs involved in applying energy efficient green technologies and sustainable principles to Johannesburg's existing commercial building stock. Although South Africa is committed to contributing toward greenhouse gas reduction in terms of the Kyoto Protocol, such contribution unfortunately occurs at a slow pace. Although the current built environment is identified as a key element in the mitigation of climate change, developers and building owners argue that the associated costs remain the largest drawback. Retrofitting existing buildings to meet green standards could significantly contribute to mitigating climate change.
2

Attitudes towards new green technologies : a study of households using solar water heaters in low income RDP houses in Kwandengezi Coffee Farm, eThekwini Municipality.

Nxumalo, Omega Sibusiso. 29 October 2014 (has links)
Within the international context, energy has become a central factor in our everyday ways of life. There is increasing dependence on energy resources such as electricity to improve people quality of life. In developing countries, many people still do not have access to energy due to several challenges that have hindered infrastructural development and economic growth. At the same time, there is a growing interest in the protection of the environment and addressing issues of climate change. Green technologies such as solar water heaters are identified as technologies that meet the need of both its end-users and the environment through the provision of hot water. Access to 'hot water' is seen to be an important element resulting in an improved quality of life. In addition, several methods of heating water are explored to assess the attitudes and perceptions that people have towards solar water heaters. The dissertation involved in-depth interviews with residents from low income RDP houses in Kwandengezi Coffee Farm and government officials from eThekwini Municipality involved in the solar water heater programme for low income communities. The interviews revealed that renewable energy interventions such as the solar heater programme for low income communities contribute significantly to an improvement in people‘s quality of life. The availability of solar heaters allows people to enjoy hot water at a free cost, hence an improvement in the quality of life. The research further revealed that such renewable energy interventions can contribute to a reduction in negative environmental impacts, hence facilitating the acquisition of hot water with less dependence on electricity resources. / M.Dev.Studies University of KwaZulu-Natal, Durban 2013.
3

A model for green IT strategy : a content analysis approach

Du Preez, Riekert January 2010 (has links)
Society’s reliance on Information Technology (IT) has increased tremendously in the last few decades. Unfortunately, the growth of the IT sector has occurred at the expense of the environment. The adverse environmental impact of IT operations is partly due to the production and disposal of IT equipment, which can result in harmful pollution and toxic materials being released into the environment. Furthermore, IT equipment consumes large amounts of electricity, and this results in significant amounts of carbon dioxide (CO2) being released into the atmosphere. Since CO2 is classified as a greenhouse gas, it contributes to the phenomenon of climate change. Organisations are socially and ethically required to minimise the environmental impact of their IT operations. However, in addition to fulfilling their responsibility towards environmental sustainability, organisations can gain a competitive advantage through adopting green IT practices. In order to reap the benefits of green IT and to fulfil their social and ethical responsibilities, organisations need to formulate and implement a comprehensive green IT strategy. When formulating strategic decisions, the use of a clear decision process enhances the effectiveness of such decisions. As a result, top IT management require a model or framework which could guide their thinking and allow for a clear decision process when formulating green IT strategy. However, after an extensive search of the literature had been conducted, a research gap was identified for the definition of a model which deals specifically with the formulation and execution of green IT strategy. As a result, this treatise sets out to answer the question of what organisations should consider when formulating and implementing green IT strategy. To answer the research question, the treatise defines a model for green IT strategy. The model was defined by conducting a content analysis of the literature on green IT. The content-analysis ABSTRACT iii research technique was utilised to identify the underlying concepts within the literature related to green IT strategy formulation and execution. The resulting model indicates that green IT strategy formulation requires holistic thinking, since several forces affect green IT strategy. As a result, these forces should be considered when a green IT strategy is to be formulated. However, even if a strategy is formulated by considering all the forces at play, it is of little use if it is not implemented effectively. The model indicates that green IT strategy should be implemented though a series of practices. These practices are not limited to IT practices alone, but include, in addition, several business practices. This indicates that green IT adoption extends far beyond the mere implementation of green technology.
4

An analysis of consumer intention to purchase green vehicles in the South African market : a theory of planned behaviour perspective

Hamilton, Brett Joseph 12 1900 (has links)
Thesis (MBA)--Stellenbosch University, 2014. / ENGLISH ABSTRACT: For companies, merely offering green products does not guarantee long-term market success (Hansen, Risborg & Steen, 2012). In many cases, consumers fail to act green despite stating that they intend to do so and having a positive attitude towards green behaviour. This is referred to as the attitude-action gap (Lane & Potter, 2007; Eckhardt, Belk & Devinney, 2010). What is required is a deeper understanding of the underlying reasons for green consumer behaviour, such as consumer values, in order to develop effective green marketing strategies (Hansen, 2008; Kim & Chung, 2011). The purpose of the research was to use Ajzen’s theory of planned behaviour (TPB) (1985) to study the link between the personal values of consumers and their attitudes and behaviour toward purchasing green vehicles in the South African market. It focused on alternative fuel vehicles (AFVs) and, more specifically, hybrid and electric-drive vehicles (HEVs and EVs), since these are the only type of AFV currently available in the South African market. In addition, it investigated the role that subjective norm (SN) and perceived behavioural control (PBC) has on the intention to purchase AFVs. The analysis failed to find a significant relationship between the four higher-order values (self-enhancement, self-transcendence, openness to change and conservation) and attitude. In the case of openness to change and conservation, this was not entirely unexpected, but a lack of a significant relationship between self-enhancement, self-transcendence and attitude was an interesting result, which warrants further investigation, as the use of the ESS Human Value Scale as measurement instrument could be brought into question. The analysis also found significant relationships between attitude, subjective norm, and perceived behavioural control and behavioural intention. Of the three constructs, attitude was found to have the most significant impact on behavioural intention. These findings are in support of modern literature and emphasise: 1. that consumers do not rely on their values when forming an attitude towards AFVs and, thus, the marketing of AFVs should not rely on value-driven marketing, 2. that attitudinal factors has the biggest influence on intention, 3. that the perceived support and encouragement of referent others are important considerations for individuals, and 3. that control factors also play a critical role when consumers decide whether to purchase an AFV or not. The marketing of AFVs should thus focus on these three factors, including shaping attitudes, emphasising the role of referent others and informing consumers about control factors.
5

Adopting green information and communication technology: barriers for South African small and medium enterprises

Bok, Elizma Sharee 12 1900 (has links)
Green information and communication technology (ICT) is viewed as a pioneering initiative that plays a key role in reducing the negative impact of ICT on the environment. The research problem of the study was the low green ICT adoption rate in South African small and medium enterprises (SMEs). The primary objective was to identify the most prominent barriers resulting in this low adoption rate. The first secondary objective was to determine the barrier with the strongest underlying correlation resulting in the low adoption rate of green ICT in South African SMEs. The second secondary objective was to recommend strategies on how to improve the adoption rate of green ICT. A self-administered questionnaire was used to collect data through electronic and paper-based surveys. A census study was conducted among owners and managers of high-technology-based SMEs located in Gauteng. An exploratory factor analysis was employed to identify the barriers resulting in the low adoption rate of green ICT. These barriers were found to be a lack of funding, awareness, legislation, skills, and knowledge based on complexity and uncertainty. A lack of funding was identified as the most prominent barrier to adopting low green ICT. Although five constructs were discussed in the literature, the overall results presented six components, with the construct of knowledge being made up of two parts – complexity and uncertainty. This study recommends that SMEs align green ICT initiatives with their strategic goals and that government consider more adequate support structures for SMEs. The study confirmed a low green ICT adoption rate in South African SMEs, and more research is required to explore the impact of each of the factors above on the environment. / Business Management / M. Com. (Business Management)
6

Belief and actual behaviour in green information technology within a South African tertiary institution

Chiyangwa, Tawanda Blessing 02 1900 (has links)
Most research in green IT tend to focus on the practices of large IT vendors and companies. There is therefore a need to examine the beliefs and actual behaviour of IT users about green IT, as it significantly impact of energy consumption and computer design on the broader society. The main question to be answered was ―Are IT users generally concerned with regards to green IT issues?‖. Therefore the main purpose of this study was thus to evaluate the beliefs and actual behaviour of IT users regarding green IT in South Africa through a survey that was completed by university students and lecturers. The paucity of available research on this subject pertaining to South Africa justifies the importance of conducting this study. A hypothesised research model based on the theory of planned behaviour (TPB) was used to evaluate the main factors contributing to green IT awareness in an empirical study. A mixed research method was used as the paradigm which combines aspects from both interpretive and positivist research approaches. A questionnaire was used to collect data from university students and lecturers. The data was captured and analysed for convergent validity. The reliability of measurement items was tested using Cronbach‘s alpha. Structural Equation Modelling was used to model latent variables under conditions of non-normality. Subjective norm was the main factor contributing to intended belief and actual behaviour / School of Computing / M.A. (Computer Science)
7

Belief and actual behaviour in green information technology within a South African tertiary institution

Chiyangwa, Tawanda Blessing 02 1900 (has links)
Most research in green IT tend to focus on the practices of large IT vendors and companies. There is therefore a need to examine the beliefs and actual behaviour of IT users about green IT, as it significantly impact of energy consumption and computer design on the broader society. The main question to be answered was ―Are IT users generally concerned with regards to green IT issues?‖. Therefore the main purpose of this study was thus to evaluate the beliefs and actual behaviour of IT users regarding green IT in South Africa through a survey that was completed by university students and lecturers. The paucity of available research on this subject pertaining to South Africa justifies the importance of conducting this study. A hypothesised research model based on the theory of planned behaviour (TPB) was used to evaluate the main factors contributing to green IT awareness in an empirical study. A mixed research method was used as the paradigm which combines aspects from both interpretive and positivist research approaches. A questionnaire was used to collect data from university students and lecturers. The data was captured and analysed for convergent validity. The reliability of measurement items was tested using Cronbach‘s alpha. Structural Equation Modelling was used to model latent variables under conditions of non-normality. Subjective norm was the main factor contributing to intended belief and actual behaviour / School of Computing / M.A. (Computer Science)
8

Adopting green information and communication technology: barriers for South African small and medium enterprises

Bok, Elizma Sharee 12 1900 (has links)
Abstracts in English, Afrikaans and Xhosa / Green information and communication technology (ICT) is viewed as a pioneering initiative that plays a key role in reducing the negative impact of ICT on the environment. The research problem of the study was the low green ICT adoption rate in South African small and medium enterprises (SMEs). The primary objective was to identify the most prominent barriers resulting in this low adoption rate. The first secondary objective was to determine the barrier with the strongest underlying correlation resulting in the low adoption rate of green ICT in South African SMEs. The second secondary objective was to recommend strategies on how to improve the adoption rate of green ICT. A self-administered questionnaire was used to collect data through electronic and paper-based surveys. A census study was conducted among owners and managers of high-technology-based SMEs located in Gauteng. An exploratory factor analysis was employed to identify the barriers resulting in the low adoption rate of green ICT. These barriers were found to be a lack of funding, awareness, legislation, skills, and knowledge based on complexity and uncertainty. A lack of funding was identified as the most prominent barrier to adopting low green ICT. Although five constructs were discussed in the literature, the overall results presented six components, with the construct of knowledge being made up of two parts – complexity and uncertainty. This study recommends that SMEs align green ICT initiatives with their strategic goals and that government consider more adequate support structures for SMEs. The study confirmed a low green ICT adoption rate in South African SMEs, and more research is required to explore the impact of each of the factors above on the environment. / Met groen inligting-en-kommunikasietegnologie (IKT) word baanbrekerswerk gedoen om die nadelige uitwerking wat IKT op die omgewing het, te verklein. Die trae tempo waarteen Suid-Afrikaanse klein en medium ondernemings (KMO’s) groen IKT aanneem was die navorsingsprobleem van hierdie studie. Die primêre oogmerk was om die grootste struikelblokke vir die aanneem van groen IKT aan te toon. Die eerste sekondêre oogmerk was om die struikelblok met die sterkste onderliggende korrelasie met die trae tempo waarteen Suid-Afrikaanse KMO’s groen IKT aanneem, te bepaal. Die tweede was om met strategieë te kom om die tempo te versnel waarteen groen ITK aangeneem word. Data is met ʼn selfvraelys deur elektroniese en papieropnames versamel. ʼn Sensusstudie is onder die eienaars en bestuurders van hoëtegnologie-KMO’s in Gauteng gedoen. Struikelblokke wat vir die trae aanneming van groen ITK verantwoordelik is, is met ʼn verkennende faktoranalise aangetoon. Daar is bevind dat gebrekkige befondsing en bewustheid, wetgewing, ʼn gebrek aan vaardighede en kennis weens die kompleksiteit en onsekerheid struikelblokke is. ʼn Gebrek aan befondsing was die grootste struikelblok vir die aanneem van groen IKT. Hoewel vyf konstrukte in die literatuur bespreek is, het die uitslag aangedui daar is ses. Die konstruk kennis is uit twee dele saamgestel: kompleksiteit en onsekerheid. Hierdie studie beveel aan dat KMO’s hulle groen IKT-inisiatiewe met hulle strategiese doelwitte in ooreenstemming bring, en dat die regering KMO’s beter ondersteun. Die studie bevestig die trae tempo waarteen Suid-Afrikaanse KMO’s groen ITK aanneem. Die invloed van elk van die bogenoemde faktore op die omgewing moet in verdere navorsing verken word. / Ulwazi lwezeMvelo kanye nobuchwepheshe bezokuxhumana (ICT) kuphawuleka njengemizamo yamaqhinga amasha adlala indima esemqoka ekunciphiseni umthelela omubi we-ICT kwezemvelo. Inkinga exazululwayo kucwaningo kwabe kuyizinga eliphansi lomthintela we-ICT kwezemvelo kumabhizinisi amancane nalawo asafufusa (SMEs) eNingizimu Afrika. Inhloso yokuqala kwabe kuwukuthola izikhinyabezo ezigqamile eziholela ekutheni kube nezinga eliphansi lokwamukela ezemvelo. Inhloso yokuqala esesigabeni sesibili kwabe kuwukuthola isikhinyabezo esinezimpawu ezihambisanayo kakhulu esidala izinga eliphansi lokwamukela ezemvelo kwi-ICT. Inhloso yesibili yesigaba sesibili kwabe kuwukuncoma amasu angasetshenziswa ukuthuthukisa izinga lokwamukelwa kwezemvelo kwi-ICT. Umbhalo wemibuzo ehlelwe wumcwaningi ngokwakhe wasetshenziswa ukuqoqa idatha ngohlelo lwesaveyi eyaqhutshwa ngekhomphyutha nangephepha. Ucwaningo lohlelo lokubalwa kwabantu/lwesensasi lwenziwa phakathi kwabanikazi kanye nabaphathi bamabhizinisi amancane nasafufusa esifundazweni saseGauteng, amabhizinisi encike kubuchwepheshe beqophelo eliphezulu. Uhlelo lokuhlaziya oluhlolayo lwasetshenziswa ngesizathu sokuthola izihibhe ezidala izinga eliphansi lokulandelwa kwezemvelo ku-ICT. Lezi zihibhe zatholakala ukuthi ukuswela uxhaso lwezimali, ukwexwayiswa, umthetho, izakhono zomsebenzi kanye nolwazi olwencike phezu kwesimo esixubene kanye nokungabi nesiqinisekiso. Ukuswela ukuxhaswa ngezimali kwabonakala njengesikhinyabezo esikhulu mayelana nokwamukelwa kwezinga eliphansi lwe-ICT yezemvelo. Yize kuye kwaxoxwa ngezakhiwo ezinhlanu kumbhalo wobuciko, yonke imiphumela iveze izigaba eziyisithupha, ngesakhiwo solwazi esahlukene izingcezu ezimbili – isimo esixubene kanye kanye nokungabi nasiqinisekiso. Ucwaningo luncoma ukuthi amabhizinisi amancane nasafufusa (SMEs) ahambisana nemizamo yohlelo lwe-ICT olulandela ezemvelo kanye nezimpokophelo zamasu kanye nokuthi uhulumeni ubhekelele ukuthi kube nezakhiwo eziningi nezanele zokuxhasa amabhizinisi amancane nasafufusa (SMEs). Ucwaningo luqinisekisile ukuthi kunezinga eliphansi lokubhekelelwa amabhizinisi amancane nasafufusa mayelana nezemvelo kwi-ICT eNingizimu Afrika, kanti kudingeka ucwaningo oluningi ukuhlola umthintela wazo zonke izinto ezingenhla mayelana nezemvelo. / Business Management / M. Com. (Business Management)

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