Research Publications (Management Sciences)

Permanent URI for this collectionhttp://ir-dev.dut.ac.za/handle/10321/217

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Assessing the performance of green roofs for stormwater runoff mitigation in the South African urban environment
(Journal of Urban and Environmental Engineering, 2021-12-31) Sucheran, Reshma; Sucheran, Arisha
Rapid urbanization has altered the hydrologic cycle, causing increased runoff rates and peak flows in the drainage system. Cities are now facing serious problems relating to stormwater management such as water scarcity, degraded waterways, and increased flooding. Under such circumstances, green roofs present numerous benefits including the retention of rainwater for a longer time and a delay in the peak discharge. Using data from various storm events, this study examined the performance of retrofitted green roofs for stormwater management in the eThekwini region of South Africa. The study also used the Personal Computer Storm Water Management Model (PCSWMM) to investigate the effect that the best performing green roof would have on stormwater flow rates and volumes for the region. The results concluded that the green roof systems proved to significantly reduce stormwater runoff flow rates and volumes, and retention largely depended on the intensity and duration of the rain events. The PCSWMM model further confirmed that when compared to the base model, peak flow rates from the green roof model decreased by over 40% for all storm intensities. It can therefore be concluded that the implementation of green roofs within the eThekwini Central Business District (CBD) will be highly effective in reducing peak stormwater flow rates.
Challenges during installation and maintenance of water delivery infrastructure : a citizen perspective
(Beykent University, 2023-10-30) Mokgobu, Matlou Lesley; Mason, Roger; Dobbelstein, Thomas
The installation and maintenance of water infrastructure in South African cities poses a challenge to communities, municipalities, and installation contractors, who face problems such as inadequate access to homes, traffic jams, inadequately barricaded trenches, leaking water pipes, water supply cut offs, vandalism, and theft of water. The research problem, therefore, involves an inadequate understanding of what drives these problems and how to mitigate them through better management. The aim of this study was to investigate the challenges of managing water infrastructure as perceived by the citizens of a South African municipality. The study was a descriptive and cross-sectional survey, with data collected, via a literature derived, emailed questionnaire, from a self-selected non probability sample of 402 City of Tshwane residents. Analysis, via SPSS Version 27, used descriptive and inferential statistics. The findings revealed that both the municipality and the contractors contributed to the challenges experienced by citizens, with maintenance challenges being more serious than installation challenges. Municipal and political challenges were the main drivers, with political ownership of construction companies and political interference being the biggest problems. The findings contributed to a better understanding of the challenges inhibiting effective installation and maintenance of water infrastructure, and are important to the municipality, and the community at large, because they contribute to a better understanding of service delivery from the citizens’ perspectives.
Creating economic viability in rural South Africa through water resource management in subsistence farming
(Business Perspectives, 2016) Bakre, Olayemi Rahman; Dorasamy, Nirmala
The purpose of this paper is to analyze the role water resources management can play in improving subsistence farming in rural South Africa, as well as reducing poverty. The study followed a mixed research approach where attributes of qualitative and quantitative methods were used. This paper indicates that due to water scarcity experienced amongst subsistence farmers in case study area, several farmers have opted out of farming. This has a negative consequence on food security and poverty among many subsistence farmers. The paper suggests the pathways for sustainable subsistence farming aimed at creating an economically viable rural community while addressing poverty through the implementation of an efficient water resources management practice. As highlighted in this paper, development is a gradual process, and water resources management can possibly be the first step in creating an economically viable community while alleviating poverty among subsistence farmers in water scarce rural areas of South Africa. Revamping the subsistence farming, as well as improving the standard of living amongst rural subsistence farmers requires a purposeful co-ordination and exchange of ideas between experienced agricultural extension workers, researchers in the field of context, policy makers, as well as other stakeholders. Such purposeful co-ordination should have an agenda of transforming the subsistence farming to a commercialized form of farming in the long term. The resultant effect will possibly result in an economically viable community; increase in household income, as well as food security, thereby reducing poverty.
Mediating effects on poverty reduction in India through Mahatma Gandhi National Rural Employment Guarantee Programme
(National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications), 2021-11-02) Arulraj, A.; Rena, Ravinder
The employment opportunities in rural areas have signifi cantly decreased for the last few decades in India. Th erefore, Government of India introduced Mahatma Gandhi National Rural Employment Guarantee Programme (MGNREGP) to create employment opportunities for ru ral people. Th e Programme is considered as a “silver bullet” for eradicating rural poverty and unemployment in India. Th e purpose of this empirical research study is to develop a new model for poverty reduction in rural India through this Programme. Th e novelty of this article is an attempt to develop an empirical research model that assists the Mahatma Gandhi National Rural Employment Guarantee Programme when mapping the level of economics service quality and thereby enhance the same. Th is Programme provides an alternative source of livelihood, which will have an impact on reducing migration, restricting child labor, alleviating poverty, and making villages self-sustaining through productive assets creation such as road construction, cleaning up of water tanks, soil and water conservation work, etc. for which it has been considered as the largest anti-poverty programme in the world. Th e paper critically examines the implementation process of this Programme and its impact on tribal livelihoods. Th e following research methodology is used in the article: the data were collected using a structured questionnaire. Th e sampling procedure used for this study is stratifi ed random sampling. Th e stratifi cation is done based on the Taluks are Kumbakonam (Th anjavur District), Keeranur (Pudukottai District) and Nagappatinam (Nagappatinam District) of Tamilnadu state of South-India for the nature of region South, East, Centre, West and North while selecting the MGNREGP Employees from each category, non-probabilistic convenience and judgmental sampling technique is used. Th e fi ndings and conclusions of the study reveal that millions of rural poor with the inclusion of new works under this Programme could able to get some employment which supports their livelihoods. Eff orts are exerted to improve more transparency and accountability in implementing this programme to ensure that the benefi ts reach out to the poor and the needy villagers. Th e regression analysis revealed that the Poverty Eradication on the various dimensions of Economic Development, infl uenced Economic Development followed by Social Development. Th e visual representation of results suggest that the relationships between the dimensions of Economic Development, Social development resulted in a signifi cant impact on the mediated factor ‘Poverty Eradication’. Th e paper suggests the policy framework for the stakeholders in eff ective implementation of the Programme.
Modernisation of rural communities : solid waste management implication
(Durban University of Technology, 2023) Zondi, Nkululeko; Qwatekana, Zikho; Dube, Simphiwe
Solid waste management is a global challenge, particularly in economically developing countries due to their growing population, urbanisation, and increasing waste generation. Municipalities in South Africa are responsible for general waste management in both residential areas and industrial sites. However, waste management is not implemented in all rural areas of South Africa, even against the background of socioeconomic improvement and increased consumption patterns in these communities. This study aims to examine the relationship between rural socioeconomic conditions and solid waste generation and management. The target population of this study is five rural communities of the Vulindlela area, which is situated west of Msunduzi Municipality in Pietermaritzburg, KwaZulu-Natal. A total of 50 households were randomly selected as sample sites as the result of a detailed field survey in 2022 and 50 respondents participated in the study for interview through cluster sampling technique. The study uses a mixture of qualitative and quantitative methods. Primary data about the socio-demographic characteristics of respondents were gathered through close-ended questions. Open-ended questions in the semi-structured interviews were utilised to gather data on Vulindlela residents’ perceptions of waste pollution effects and strategies implemented in their area. Microsoft Excel version 2305 was used to perform basic descriptive statistics (frequencies and percentages) to examine the socio-economic characteristics of respondents. While a thematic content analysis was undertaken to analyse the open-ended question data which was on respondents’ perceptions of waste pollution in their area. The study findings suggest that Vulindlela is a socioeconomically diverse rural community, with households earning between 500 and 31,000 Rand per month. In addition, grocery expenditures range from 800 to 3100 Rand per month. Communities characterised by lower income generation dispose of their waste inside their households, apart from certain waste such as nappies that are disposed of in freshwater ecosystems and open spaces, while those who earn more money have diverse waste types and dispose of their waste at illegal dump sites.
Rural redress through investment in water resource management for subsistence farming
(Environmental Economics, 2015) Bakre, Olayemi Rahman; Dorasamy, Nirmala
Rural development is a topical issue in South Africa. Several studies, policies and strategies as regards rural develop-ment are discussed at various levels and platforms. However, despite the efforts made by government and non-governmental bodies, rural communities such as the Mtubatuba community situated in the north-east region of KwaZu-lu-Natal and many other rural communities still wallow in poverty. In consonance to the high prevalence of poverty and stagnation of subsistence farming, the paper aims to suggest other approaches to addressing the cyclical poverty and defunct subsistence farming in this community. To accomplish this aim, a mixed research approach was used; as elements of qualitative (interviews) and quantitative (questionnaire) research approaches were used to obtain relevant information. The study reveals that water shortage has adversely undermined the development and growth of subsistence farming in this poor community. Furthermore, the difficulties experienced by the marginalized people of Mtubatuba are typical of many rural areas which have not fully benefitted from transformation in a post-apartheid South Africa. To address this concern, the study suggested the reallocation of the municipalities surplus budget to the investment of water resource management with the intent of transforming the subsistence farming into commercial farming; thus improving the standard of living and reducing poverty to a reasonable extent.
Towards developing a sustainability assessment framework for buildings in Uganda : a literature review
(2023-08-29) Semanda, Julius; Moyo, Sibusiso; Chikafalimani, Samuel Herald Peter; Kibwani, Nathan
The construction sector is one of the main contributors to sustainable development, and its importance in encouraging environmental protection, economic growth, and social advancement is undeniable. The present study reviewed existing literature to help develop a framework for assessing the sustainability of buildings in Uganda. To develop the framework, indicators were needed, therefore, sustainability indicators from the main sustainability rating tools like BREEAM, LEED, CASBEE, Green Star and IGBC, and the various journals were established. A systematic literature review of accessible literature was the research approach used. Inadequate public education and awareness, construction process technicalities, higher costs of sustainable building processes and materials, bureaucracy processes, unfamiliarity with sustainable technology, and lack of sustainable product information, were singled out as the main challenges for implementing sustainability processes in developing countries coupled with regional differences in local conditions, policies, and regulations in different countries. Embracing and implementing sustainability practices offers protection of air, water, land, and ecosystems, promotes harmony among people and between humanity and nature, and improves economic growth. Since no sustainability assessment tool/framework of buildings exists in Uganda, the study aims to establish one, to be able to foster sustainability practices. However, establishing policies, regulations, incentives, awareness, and industry support are important to promote sustainability in Uganda.
Understanding household water-use behaviour in the city of Johannesburg, South Africa
(IWA Publishing, 2021-10) Murwirapachena, Genius
Climate change, population growth and industrial activities continue to threaten water security, especially in the semi-arid regions. Demand management policies are essential in minimising the effects of acute water shortages. Such policies require information on household water consumption patterns and their behavioural practices. This study examines household water consumption behaviour and the adoption of water-efficient appliances in Johannesburg, South Africa. The study uses probit regression models to analyse survey data collected from 889 households during the period November 2017 to February 2018. Results show that while most households do not have water-efficient appliances installed in their homes, they do practise water-efficient behaviour. Older respondents as well as males and lower-income respondents are found to be more likely to practise efficient water-use behaviour. However, biographical variables do not generally influence the adoption of water-efficient appliances. These results are essential for policy-makers when formulating targeted water demand management policies. Thus, policy-makers should focus more on younger people, women and higher-income households when developing campaigns on efficient water-use
Water consumption behaviour and the use of technology among households in Durban, South Africa
(IWA Publishing, 2023-04-21) Ngcobo, Mbuso; Murwirapachena, Genius; Reddy, Maliga
Freshwater resources remain under constant pressure due to population growth, economic development, and changing weather patterns. Water supply utilities generally struggle to keep up with the growing demand for freshwater resources and consequently adopt demand management policies to address supply challenges. As water consumers, households can play a major role in water conservation. This paper examines the impact of biographic characteristics on water consumption behaviour and the adoption of water-efficient technologies in the city of Durban, South Africa. Probit regression models are estimated using survey data collected from 300 household heads sampled across the city. Among other results, the study finds income as the most consistent determinant of water consumption behaviours and the adoption of water-efficient technologies. Furthermore, the level of education was also found to be a consistent determinant of the adoption and installation of water-efficient technologies. These results are significant and serve to guide water utilities when implementing demand management water policies.