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Communities in DSpace
South Africa's foreign policy and evolving role conceptions: a crisis of international identitySouth Africa’s transition to democracy in 1994 saw a substantial shift in the perceived international role for South Africa, from a position in defence of the domestic policy of apartheid, to the outwards orientated approach of universalism. The challenge, as this section argues, is that in the South African context the national role conception, or the image of what role the country should play in international relations, has failed to ‘settle’ despite continuity of foreign policy on paper. As Mills (1997) argues, the search for a new ‘image’ has seen Pretoria ‘leaning all over the place’ on the international stage. The result has been perceptible challenges in reconciling foreign policy ambitions and ideals with implementation in practice; where confusion around what role to adopt has made it difficult to predict the country’s international actions.
Quantitative impacts of mandatory integrated reportingThis paper examines the impact of the 2011 mandatory introduction of integrated reporting (IR) on the financial performance, risk and institutional shareholding of listed companies in South Africa to assess whether there is a benefit to IR and which may encourage greater adoption of it globally. It contrasts the results with two other African stock exchanges (Nigeria and Egypt with no mandatory IR) and examines whether IR quality also has an impact on these and on Environmental, Social and Governance (ESG) disclosure scores. A series of multivariate ordinary least squares regressions were estimated on a range of financial, risk, institutional and ESG data from firms on the three African stock exchanges, between 2006-2015. Financial performance and risk in South African firms appear to have decreased since the start of mandatory reporting, but institutional shareholding has increased. The production of higher quality reports is associated with decreased financial performance and risk, higher institutional shareholding and increased ESG scores. This study is first to test the quantitative effects of IR and IR quality on a broad range of financial performance and risk measures and the level of institutional shareholding. It also adds to the literature by assessing how the quality of IR can impact the ESG scoring of the business. Hence this study is of interest to firms looking to adopt IR for its benefits and to regulatory bodies considering the mandatory adoption of IR in support of achievement of national social and environmental goals.
Graph data modelling for genomic variantsGenome variant analysis is performed on Variant Call Format (VCF) files. It can take days to process these files for genome analytics due to challenges such as loading the files for each user query and processing them to answer questions of interest. As data sizes grow, timely processing of this data is putting enormous pressure on the computational resources, leading to significant processing delays and may jeopardise the ultimate goal of bringing the genomic discoveries to masses. We believe this problem will not be solved until the underlying data structure to organise and process these files undergoes a transformation. To overcome this problem, we have proposed a graph based system to represent the data in VCF files. This allows the data to be loaded once in a graph model which is then subsequently queried and processed numerous times without any additional computational and data access penalties. This helps reduce data access time by giving a constant time access to any node and addresses performance and scalability challenges that have been a limiting factor for the mass scale adoption of genome analytics. It takes only 2ms to access any data node in our graph model and remains constant for any number of nodes.
The Jews, the Holocaust and the public: the legacies of David CesaraniThis book explores the work and legacy of Professor David Cesarani OBE, a leading British scholar and expert on Jewish history who helped to shape Holocaust research, remembrance and education in the UK. It is a unique combination of chapters produced by researchers, curators and commemoration activists who either worked with and/or were taught by the late Cesarani. The chapters in this collection consider the legacies of Cesarani’s contribution to the discipline of history and the practice of public history. The contributors offer reflections on Cesarani’s approach and provide new insights into the study of Anglo-Jewish history, minorities and nationalisms, Nazi war crimes and their legacies and the history and public legacies of the Holocaust. This edited collection comprises 17 chapters (approx' 365 pages) that have been curated by Dr Larissa Allwork and Dr Rachel Pistol. As well as working with Pistol to select and copy edit all the chapters, Allwork co-wrote the 'introduction' with Pistol (c. 6000 words), proposing that there is a distinctly 'Cesaranian' interdisciplinary approach to the study of the Holocaust. Allwork also submitted two further chapters to the collection. The first, a sole authored chapter offering an original interpretation of Gerhard Richter and Gustav Metzger's artistic confrontations with Nazi criminality (c. 10,000). The second, a transcript of an interview conducted with Cesarani in 2009 (c. 7,500 words). This includes an introductory section which self-reflexively grounds the interview and is fully footnoted and referenced.
A review on recent developments of thermoelectric materials for room-temperature applicationsWearable thermoelectric generators (TEGs) emerge as a viable renewable energy source, which directly convert the heat dissipated from human skin into electricity. Extensive reviews have been conducted on the efficiency of thermoelectric materials (TE) as the dominant element of TEGs. TE materials are categorised as inorganic, organic, and hybrid. Each of these reviews focused on either a specific type of TE materials, or on a certain specification (i.e. flexibility) of them. However, less attention has been paid to comprehensively review all these types without taking into account a certain specification. Therefore, the purpose of this paper is to summarize the progress and current state-of-the-art research on the three types of TE materials respecting their TE properties and efficiency at 300K, which is the operating temperature of wearable TEGs. Concerning the inorganic TE materials, the results show that Bi0.4-xSb1.6+xTe3 and Bi2Te2.7Se0.3 are the most optimal TE materials, which exhibit the greatest efficiencies at room temperature. In addition, it is remarkably more efficient to replace polymer based TE composites with carbon based TE composites in the organic and the hybrid types. In total, this comprehensive review paves the way for researchers to find out the most suitable TE materials at room temperatures.