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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

Evaluation of municipal water demand and related parameters

Van Zyl, Hendrina Johanna 20 August 2008 (has links)
No description available.
2

Consumer behaviour with respect to domestic water in Mauritius including a model

Sowdagur, Daramdeo 31 July 2006 (has links)
Literature survey shows that with, a few exceptions, the consumer behaviour of domestic water consumers has not been a common area of research. This explains the scarcity of information in this specific field. This scarcity was noted in the region and very much so in the context of Mauritius. And yet, such information is very much relevant for the management of the water sector, for the improvement of the service, for policy makers, for personal and social development and for achieving consumer satisfaction. This research brings about information that would contribute in its own way to these areas. The object of this thesis is to study the consumer behaviour in respect of domestic water consumers in Mauritius, to develop new theories and to build a consumer behaviour model. The thesis, at its outset, gives the background of the research. It contains the description of the water supply situation in Mauritius, its production, its distribution and its management. The brief on the people of Mauritius helps to put in the right context the pluricultural nature of the Mauritian society which is important for the understanding of the consumer behaviour of Mauritians. The literature survey, inter-alia, gives the historical development of consumer behaviour, its relevance to marketing, and its study as a discipline in its own right. The very scarcity of theories and models of consumer behaviour of domestic water consumers cannot be overlooked. The literature survey, therefore, covers some of the theories and models specifically on commodities. These models along with the literature review serve as theoretical foundation for the present research The models of consumer behaviour which have been literature reviewed have further enabled to construct an integrated model of consumer behaviour which serves as a framework for the discussion and analysis of the new model which is developed during the course of this research. The research is one mainly of general interest and can be classified as an exploratory research with a substantial contribution of descriptive research. The research has necessitated the collection of primary data. For this purpose, the objective approach was adopted and a consumer survey was carried out with the use of a direct structured questionnaire. The survey has been supplemented by discussions of focus groups. The analysis of the consumer survey is followed by the testing of the hypotheses, the development of theories and discussions on results obtained. The building of a new model of consumer behaviour based on the findings of the research is then undertaken and discussed. The thesis covers a wide spectrum from the need of a domestic water connection, consumption of domestic water, post-consumption behaviour to the illegal use of water in Mauritius. The thesis winds up with conclusions and recommendations. The specific topic of this thesis is a rare one. This research is but a step in the furtherance of knowledge. It stands as an original regional contribution to the science of management and to its development. / Graduate School of Business Leadership / DBL
3

Consumer behaviour with respect to domestic water in Mauritius including a model

Sowdagur, Daramdeo 31 July 2006 (has links)
Literature survey shows that with, a few exceptions, the consumer behaviour of domestic water consumers has not been a common area of research. This explains the scarcity of information in this specific field. This scarcity was noted in the region and very much so in the context of Mauritius. And yet, such information is very much relevant for the management of the water sector, for the improvement of the service, for policy makers, for personal and social development and for achieving consumer satisfaction. This research brings about information that would contribute in its own way to these areas. The object of this thesis is to study the consumer behaviour in respect of domestic water consumers in Mauritius, to develop new theories and to build a consumer behaviour model. The thesis, at its outset, gives the background of the research. It contains the description of the water supply situation in Mauritius, its production, its distribution and its management. The brief on the people of Mauritius helps to put in the right context the pluricultural nature of the Mauritian society which is important for the understanding of the consumer behaviour of Mauritians. The literature survey, inter-alia, gives the historical development of consumer behaviour, its relevance to marketing, and its study as a discipline in its own right. The very scarcity of theories and models of consumer behaviour of domestic water consumers cannot be overlooked. The literature survey, therefore, covers some of the theories and models specifically on commodities. These models along with the literature review serve as theoretical foundation for the present research The models of consumer behaviour which have been literature reviewed have further enabled to construct an integrated model of consumer behaviour which serves as a framework for the discussion and analysis of the new model which is developed during the course of this research. The research is one mainly of general interest and can be classified as an exploratory research with a substantial contribution of descriptive research. The research has necessitated the collection of primary data. For this purpose, the objective approach was adopted and a consumer survey was carried out with the use of a direct structured questionnaire. The survey has been supplemented by discussions of focus groups. The analysis of the consumer survey is followed by the testing of the hypotheses, the development of theories and discussions on results obtained. The building of a new model of consumer behaviour based on the findings of the research is then undertaken and discussed. The thesis covers a wide spectrum from the need of a domestic water connection, consumption of domestic water, post-consumption behaviour to the illegal use of water in Mauritius. The thesis winds up with conclusions and recommendations. The specific topic of this thesis is a rare one. This research is but a step in the furtherance of knowledge. It stands as an original regional contribution to the science of management and to its development. / Graduate School of Business Leadership / DBL
4

Assessing the sensitivity of historic micro-component household water-use to climatic drivers

Parker, Joanne January 2014 (has links)
Anthropogenic climate change is arguably the greatest challenge of modern times posing significant risks to natural resources and the environment. Socio-economic change, severe droughts, and environmental concerns focus attention upon sustainability of water supplies and the ability of water utilities to meet competing demands worldwide. The 2012 Climate Change Risk Assessment identified water security as one of the most significant climate threats facing the UK. It is now recognised that household water demand management could offer a low regret adaptation measure (both financially and environmentally) given large uncertainties about future climate and non-climatic pressures. This thesis uses Anglian Water Services (AWS) Golden 100 dataset to explore the climate sensitivity of historic micro-component water-use. This work contributes to a larger integrated assessment of the South-East England water system under the EPSRC Adaptation and Resilience to a Changing Climate Coordination Network (ARCC CN). The Golden 100 is a metered record of 100 households daily water consumption by basin, bath, dishwasher, external, kitchen sink, shower, WC and washing machine use. The archive also includes socio-economic information for each household, dates of the year and daily time series of observed minimum temperature, maximum temperature, sunshine hours, soil moisture deficit, concurrent, and antecedent rainfall amounts. The methodology developed within this research provides a portable approach to error trapping, formatting and mining large, complex water sector datasets, for exploring the relative sensitivities of micro-component metered water-use to weather/non-weather variables. This research recognises both the importance of the choice to use a micro-component and the volume used. As such, logistic and linear generalised regression techniques are employed to explore the relative sensitivity of these two aspects of water-use to climatic and non-climatic variables. The 2009 UK Climate Projections (UKCP09) projections and climate analogues are then used to bound a climate sensitivity analysis of the most weather-sensitive micro-components using temperature and rainfall scenarios for the 2050s and 2080s. This research provides empirical evidence that the most weather sensitive micro-components are external and shower water-use. A key contribution of this research to existing knowledge is the non-linear response of likelihood and volume of external water-use to average air temperatures. There is an abrupt increase in the likelihood of external water-use on days above ~15??C. Climate sensitivity analysis further suggests that by the 2080s, under a hotter/drier climate, average unmetered households could be 8% more likely to use external-water and expend ~9 litres more per day during the summer. For the same parameters, high water users (defined here as the 90th percentile) could consume ~13 litres more external water per day. Importantly, this research has re-affirmed the relative importance of behavioural drivers of water-use as manifested by pronounced day of week and bank holiday signatures in both the likelihood and volume of use statistics. As such, this prompts future studies and water management efforts to consider the impact of behavioural drivers as well as climate. It must be recognised that the small sample size of the Golden 100 combined with the Hawthorn effect, self-selection and sample biases in factors such as socio-economic status, billing method and occupancy rate all limit the sample representativeness of the wider population. As such, any predictions based on the data must be treated as illustrative rather than definitive. Furthermore, the results are probably specific to the demographic and socio-economic groups comprising the sample. Nonetheless, this research sheds new light into water-use within the home thereby adding value to a dataset that was not originally collected with household-level, weather-related research in mind.
5

The impact of domestic water user cultures on water efficiency interventions in the South East of England : lessons for water demand management

Knamiller, C. January 2011 (has links)
The need for a more sustainable approach to water consumption has increasingly gained attention in the last decade. The domestic sector accounts for over half of abstracted water in the UK and, as such, has become a major target for water efficiency interventions. Current research and water efficiency interventions are dominated by a positivist approach, focusing on a limited range of factors that can be quantitatively measured. This thesis questions the dominant approach and argues that a more holistic overview of water efficiency can be achieved through the consideration of socio-technical and behavioural theories. Taking a more constructivist approach, this research draws on four theories from socio-technical and behavioural fields and combines them to create a framework for the analysis of water efficiency interventions. The framework is applied to two case studies, exploring water users' perceptions of water, water supply, personal water use, and their responses to the water efficiency interventions. The case studies were selected to provide examples of current mainstream approaches to water demand management. Research methods used included semi-structured interviews and observation. The research findings support the argument that the current dominant approach to domestic water efficiency interventions is limited and, in some cases, ineffectual. Issues of trust, knowledge, motivation and the relationships between water users and water companies were raised. The thesis concludes that the use of a constructivist perspective could help to provide a more effective approach to understanding and improving water demand management.
6

Experimental Analysis of an Indirect Solar Assisted Heat Pump for Domestic Water Heating

BRIDGEMAN, Andrew George 13 October 2010 (has links)
Due to rising energy costs and increasing environmental awareness, various methods of energy conservation are being investigated. In the residential sector, both solar and heat pump systems have been extensively tested. Recently, combinations of solar and heat pump systems have been developed for both space heating and water heating. These systems have the capability to provide better performances than either of the systems operating on their own. The solar collector benefits from a lower fluid (glycol) inlet temperature which increases efficiencies, and the heat pump benefits from higher evaporator temperatures due to the additional solar energy collected. For this study, a prototype of an Indirect-Solar Assisted Heat Pump for use in the Canadian environment was constructed, instrumented and tested. Controlled, constant temperature tests, as well as solar profile tests were conducted and the heat transfer rates, natural convection flow rate, and heat pump coefficient of performance (COP) were calculated. These values were then compared to simulation results based on a model developed in a previous feasibility study. The experimental COPs calculated ranged from 2.3 to 3.3 throughout the full range of tests which were conducted with supply temperatures ranging from 0°C – 40°C. The simulated results consistently overestimated the experimental results by between 12% - 15%. New empirical heat exchanger relationships were developed for the model bringing the simulated results within 5% of the experimental results for tests run at glycol flow rates of 77 and 154 kg/hr. These relationships were used to refine the model, and produce updated annual performance values in the TRNSYS simulation software. Updated results showed a 5% drop in the annual free energy ratio in Toronto from 57% to 52%, but further optimization of the system using the TRNSYS software package improved annual results up to 56%. For the purposes of the study, a solar assisted heat pump prototype was constructed and tested successfully within the laboratory environment. Results showed that the system has a strong market potential, especially in regions without a strong solar resource. Based on these results further research is recommended, continuing with a full year outdoor test using unglazed solar collectors. / Thesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2010-10-12 18:53:01.189
7

The impact of domestic water user cultures on water efficiency interventions in the South East of England: Lessons for water demand management.

Knamiller, C. January 2011 (has links)
The need for a more sustainable approach to water consumption has increasingly gained attention in the last decade. The domestic sector accounts for over half of abstracted water in the UK and, as such, has become a major target for water efficiency interventions. Current research and water efficiency interventions are dominated by a positivist approach, focusing on a limited range of factors that can be quantitatively measured. This thesis questions the dominant approach and argues that a more holistic overview of water efficiency can be achieved through the consideration of socio-technical and behavioural theories. Taking a more constructivist approach, this research draws on four theories from socio-technical and behavioural fields and combines them to create a framework for the analysis of water efficiency interventions. The framework is applied to two case studies, exploring water users¿ perceptions of water, water supply, personal water use, and their responses to the water efficiency interventions. The case studies were selected to provide examples of current mainstream approaches to water demand management. Research methods used included semi-structured interviews and observation. The research findings support the argument that the current dominant approach to domestic water efficiency interventions is limited and, in some cases, ineffectual. Issues of trust, knowledge, motivation and the relationships between water users and water companies were raised. The thesis concludes that the use of a constructivist perspective could help to provide a more effective approach to understanding and improving water demand management.
8

Issues of trust, fairness and efficacy: a qualitative study of information provision for newly metered households in England.

Knamiller, C., Sharp, Liz January 2009 (has links)
No / There is widespread agreement among agencies governing UK water management that more extensive domestic water metering combined with additional measures will deliver a more efficient domestic water usage. This paper argues that qualitative research is needed to select and hone additional measures. According to theory, cooperation to reduce water use is more likely if people: a) believe in the necessity to reduce use; b) feel costs are fairly shared; and c) believe their actions can affect the situation. The case study of Lydd, Kent, is presented. Lydd is the first location in which compulsory water metering has been imposed in the UK. Qualitative information was collected to inform the communication strategies being implemented by the water supply company. The investigation found that none of the three factors predicted by theory were completely present. The paper concludes by providing some recommendations for improving the water company's communications strategy for encouraging a reduction in domestic water use. The key role of qualitative information in assisting in the targeting and design of water demand management programmes is highlighted.
9

Household access to water and willingness to pay in South Africa: evidence from the 2007 General Household Survey

Kimbung,Ngum Julious January 2011 (has links)
<p>This study assesses the present level of household water access and the willingness to pay in South Africa. Although the general literature informs that progress has been made in positing South Africa above the levels found in most African countries, there are some marked inequalities among the population groups and across the provinces, with some performing well and others poorly in this regard. The study looks at the extent to which households differ in terms of water access and willingness to pay according to the province of residence. The study focuses on household heads / male and female, through different social and demographic attributes, by taking account of variables such as age, education&nbsp / attainment, geographic areas, and population group to name but a few. The data used in this study comes from the 2007 General Household Survey (GHS) conducted by Statistics South Africa. The scope is national and employs cross tabulation and logistic regression to establish relationships and the likelihood of living in a household with access to safe&nbsp / drinking water in South Africa. Results presented in this study suggest that the difference is determined by socio- demographic characteristics of each household such as age, gender, population group, level of education, employment status income, dwelling unit, dwelling ownership, living quarters,household size and income. It throws more light as to what needs to be taken into account when considering demand and supply of and priorities for water intervention from the household perspective.</p>
10

Household access to water and willingness to pay in South Africa: evidence from the 2007 General Household Survey

Kimbung,Ngum Julious January 2011 (has links)
<p>This study assesses the present level of household water access and the willingness to pay in South Africa. Although the general literature informs that progress has been made in positing South Africa above the levels found in most African countries, there are some marked inequalities among the population groups and across the provinces, with some performing well and others poorly in this regard. The study looks at the extent to which households differ in terms of water access and willingness to pay according to the province of residence. The study focuses on household heads / male and female, through different social and demographic attributes, by taking account of variables such as age, education&nbsp / attainment, geographic areas, and population group to name but a few. The data used in this study comes from the 2007 General Household Survey (GHS) conducted by Statistics South Africa. The scope is national and employs cross tabulation and logistic regression to establish relationships and the likelihood of living in a household with access to safe&nbsp / drinking water in South Africa. Results presented in this study suggest that the difference is determined by socio- demographic characteristics of each household such as age, gender, population group, level of education, employment status income, dwelling unit, dwelling ownership, living quarters,household size and income. It throws more light as to what needs to be taken into account when considering demand and supply of and priorities for water intervention from the household perspective.</p>

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