Heritage sites, inclusive of cultural landscapes, are understood to derive their significance from perceptions of beauty, sense of place and, when it has been impacted by humans, its genius loci and tangible qualities and the overlay of their intangible associations. In order for a site to be recognized concurrence of an Authorised Heritage Discourse whose content is constructed by academics and professionally trained heritage experts and an Autochthonous Discourse defined and expressed by laypersons, occupying or having an association with the site or sites. When Ida's Valley Cultural Landscape underwent processes of identification and declaration (formal process) as a National Heritage Site in 2008 the assumption was that there was consensus between the two views, the Authorized Heritage Discourse and the Autochthonous Discourse. The hypothesis, then, in the case of Ida's Valley Cultural Landscape which lies just beyond the limits of the town, Stellenbosch, was that there was agreement between the AHD and the AD. The question that arose was whether the two readings of heritage value aligned and whether there really was agreement in terms of the significance of the site and the values it represented. This is found not to be the case. Concerns were raised regarding the manner in which the public participation process was handled, the content of the statement of significance around issues of identification, identity and, consequently, its impact on the idea of value. In addition, the issues of land for development, the locus of land ownership and the subsequent value and universal acceptance were placed under scrutiny and severely criticized by the local public and community groups. The conclusion was that there was no agreement between the two positions. The dissertation describes the exploration of these tensions.

Includes bibliographical references. / The primary purpose of this study is to determine the degree to which the historic built environment plays a role in the establishment of a Sense of Place in the South African context with its diverse population and complex political history. The underlying rationale for this focus is that a strong connection between a Sense of Place and the historic built environment has the potential to translate to a strong motivation for its preservation. The focus in this research is on a single case, a historic diamond mining town in the Free State Province of South Africa, dating to 1869, with a rich and diverse history. The research was conducted employing a multi-paradigmatic approach grounded in Phenomenology and Psychometrics.

The vibrant suburb of Fordsburg has a rich history of diverse working class communities. It has long been associated with the Indian community and more recently a new immigrant population from the Indian subcontinent. Transitory communities have left their mark on the suburb and have resulted in changing significances and heritage resources. The study's main aim was to identify what constants have gained significance to become anchors for memory and identity in Fordsburg's landscape of rapid urban and social change. An exploration of Fordsburg's history and evolution was undertaken so as to reflect on multiple interpretations and insights into unacknowledged histories of the area. Themes of identity, urban memory, hybridity and the everyday landscape were examined within the context of Fordsburg. It concluded that there are constants of cultural significance which anchor memory and identity. These constants are located in the ordinary urban landscape of public spaces created in Fordsburg's main roads, public amenities and Fordsburg Square.

Bibliography: leaves 123-127.

Includes abstract. / Includes bibliographical references. / The case studies that make up this thesis cover the three largest academic development programmes at the University of Cape Town. A variety of statistical methods are used to estimate the effect of educational interventions in selected first- and second-year academic development courses on the academic performance of academic development students in these courses and through to graduation, relative to mainstream students. In general, research in this area in South Africa and internationally has been characterised by small sample sizes and a lack of statistical rigour. Few studies control for the range of independent variables that can affect students’ academic performance, in addition to the academic development programme or course, and the great majority ignore the sampleselection problem that arises in the selection of students for academic development and mainstream programmes. The theoretical rationale underpinning this thesis is informed by the postpositivist and evidence-based approaches to empirical investigation. Demographic, academic and other data for some 9000 students for the years 1999?2005 was obtained from the university’s data base and academic departments. Statistical techniques including multivariate analysis and propensity score matching are used in an attempt to finesse the problems associated with the use of non-experimental data as students are selected into different courses and programmes.

The research question posed in this study asks what qualities, characteristics and cultural significance need to be embodied within an urban environment that make the area worthy of conservation-oriented protection through laws and policies. The research question was explored through an assessment of the townscape of Vredehoek, an informally(1) proposed conservation area in Cape Town where there is a relatively high concentration of Art Deco buildings. The selection of Vredehoek as a laboratory within which to ask this question is due to the presence of contested opinions amongst various stakeholders and heritage-claimants about the cultural significance embodied within the built fabric of this place. This study aimed to identify what elements of the built environment of Vredehoek are of special interest, what qualities and characteristics these elements of special interest embody, to understand and articulate the values that inform these qualities, and to identify to whom these elements are valuable and why. Criteria were established with which to determine whether the identified qualities and values are special enough that when synthesised, the resultant significance of the place warrants protection through heritage area designation. The criteria developed with which to assess and evaluate proposed urban conservation areas, including Vredehoek, require that such environments need to embody cultural significance and characteristics informed by an urban history reflected in its authentic manifestations developed over time through continuity of use with a high townscape quality established primarily through the aesthetic unity of its component parts. Through historical research, the studying, mapping and analysis of the area's urban morphology, built environment and natural landscape, and the identification and evaluation of values held by heritage-claimants and views held by those critical of Vredehoek's proposed designation, evidence regarding the conservation-worthiness of Vredehoek has been assembled and assessed within the framework of criteria developed to evaluate heritage area designation. It has been found that the environment of Vredehoek does not embody high townscape quality nor does a strong aesthetic unity of its components exist. Furthermore, the area is not a richly layered environment reflecting continuity of use, the existence of cultural significance within the place is limited to a relatively small part of the townscape - a collection of Art Deco buildings demonstrating a moderate degree of architectural merit. Thus the environment of Vredehoek does not meet the criteria required for heritage area conservation.

Conservation in Montagu started in the early 1970s, with the rescuing and restoration of significant buildings and the declaration of 21 National Monuments (now called Provincial Heritage Sites), which safeguarded those buildings when no other heritage protections were in place. This was followed by a conservation study by Todeschini and Japha in 1990, identifying heritage resources, delineating conservation areas and providing guidelines. This case study has found that, with a few exceptions, the conservation endeavours in Montagu during the past 40 years have been successful.

This study investigates the perceived heritage significance of township churches. This is done by means of a case study which focuses on early churches in Langa, particularly the Wesleyan Methodist and the African Methodist Episcopal churches. The hypothesis is that heritage values are attached to certain churches of Langa and that these are regarded as heritage resources as a result of a particular character or built form. In support of this hypothesis, the intellectual realm of churches and heritage values was explored and the historical and spatial context which informed the development of the churches, investigated. A strong emphasis was placed on ascertaining the heritage values of the Langa community in a series of interviews. To understand the values attached to churches, views have been solicited from community members residing in the neighbourhood of the identified churches, members of the clergy and congregants and a number of 'experts’ - people who have been involved in the study of heritage in Langa, either from an academic or community perspective. Sixteen interviews, which took the form of focused, semistructured discussions, were conducted.

The (Re)Discovery of Mapungubwe in 1933 sparked an ongoing 89-year journey of interpretation, re-interpretation, hidden agendas, scientific racism and an evolution of worldviews. In being as deeply meaningful and entrenched in the South African psyche as it is, Mapungubwe features in a variety of representations. For this thesis, a selection of these representations were made of both those considered historical and contemporary. These were discussed and unpacked in accordance with the broader research question examining if their accuracy matters. In this unpacking archaeological theory is discussed, as well as the nationalist ideologies and racial science which was attributed to it in the early 20th Century. In addition to the selection of representations, a history of the re(discovery) and discoveries of Mapungubwe is also discussed. Ultimately, it does not matter if representations of Mapungubwe are accurate or authentic, as these facets are framework dependent, and have been found to each carry their own meaning or 'truth' around the Mapungubwe story.

An integrated thermofluid modelling methodology for pulverised fuel fired utility-scale boilers that is computationally inexpensive, fast, and sufficiently accurate would be valuable in an industrial setting. Such a model would enable boiler operators to investigate a range of off-design operating conditions, which includes flexible operation. The aims of this study was: to develop a reduced order computational fluid dynamics (CFD) model of the furnace and radiative heat exchangers that captures all the important particulate effects while using a Eulerian-Eulerian (EE) approach; using the reduced order CFD model to generate a database of results that covers a wide range of operating conditions; to develop a data-driven surrogate model using machine learning techniques; to integrate the surrogate model with a 1-D process model of the complete boiler; and finally to demonstrate the use of the integrated model to investigate flexible operation and off-design operating conditions. The validity of the CFD modelling approach was demonstrated via application to a 2.165 [MWth] lab-scale swirl pulverised fuel burner, as well as to a 620 [MWe] utility-scale subcritical two-pass boiler, both operating at various loads. The results were compared to measured data and a detailed CFD model using the conventional Eulerian-Lagrangian (EL) approach. A computational speed enhancement of 30% was achieved. The data-driven surrogate model uses a mixture density network (MDN) to predict the heat transfer in the furnace and radiative heat exchangers, together with the uncertainty in the predicted values. The integrated model was validated against applicable measured data and then applied to a utility-scale case study boiler to investigate the optimal burner firing positions for low-load operation, as well as to investigate the effects of fuel quality on the overall boiler performance. It was shown that the integrated data-driven surrogate model and 1-D process model can predict the overall thermofluid response of the boiler and the uncertainties associated with it with good accuracy, whilst maintaining a low computational effort when compared to a conventional CFD model coupled to 1-D process model.