22282 research outputs found
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The Mystery Man Can Help Reduce False Identification for Child Witnesses: Evidence from Video Line-ups
No full texttiswellestablishedthatchildren(asyoungas5years)cancorrectlyidentifyatargetfromatargetpresent(TP)line-up as accurately as adults; however, when shown a target absent (TA) line-up, children make more false identifications. In the present study, children aged 5–7 and 8–11 years viewed a film of a staged theft, then 1–2 days later were shown either a TP or TA video line- up. Half of the witnesses viewed line-ups that included a ‘mystery man’ (a black silhouette with a white question mark), which they could select if they did not recognise anyone from the line-up. When the ‘mystery man’ was present in the line-up, there were significantly fewer false identifications for the TA line-ups. This study shows that including a silhouette in a video line-up can help reduce false identifications for children as young as 5 years of age, without reducing correct identifications
Video identification of suspects: A discussion of current practice and policy in the United Kingdom
No full textProcedures for eyewitness identification of suspects in the United Kingdom must adhere to the Police and Criminal Evidence (PACE) Act Codes of Practice. These Codes stipulate what methods can and cannot be used, what must be said to eyewitnesses before the procedure, and how procedures must be constructed. Our approach has been two fold. The first has been to contact all police forces in England, Wales and Northern Ireland to obtain copies of the protocols followed when they conduct identification tests. The second has been to review evidence from the psycho- logical literature on a range of factors that can influence outcomes on eyewitness identification tests. We make several recommendations that would bring PACE in line with research-based best practice, including mandatory single-suspect procedures, blind administration, and systematic recording of eyewitness confidence. The technology and the structure of specialist identification suites in the UK would allow each of the recommendations to be imple- mented effectively and inexpensively
Curating Science in an Age of Empire: Kew's Museum of Economic Botany
No full textThis thesis considers the history and significance of the Museum of Economic Botany at the Royal Botanic Gardens, Kew, focussing especially on the period from its opening in 1847 to the eve of the First World War. Looking specifically at the Museum’s collection of wood specimens and artefacts, it seeks to understand the nature of economic botany during this period, and to evaluate the contribution made to the field by the Kew Museum. Through examination of the Museum’s practices, networks, spaces, and objects, it sets out to address the question: how do museums produce scientific knowledge? Part One sets the context. Chapter One provides a brief historical account of nineteenth-century economic botany and the Museum. Chapter Two offers a critical overview of literatures on Kew and economic botany; on the role of place in the production, circulation, and reception of scientific knowledge; and on the role of the public museum in Victorian science and culture. It also outlines the conceptual framework of the thesis. Chapter Three presents an account of the methodology and sources. Part Two highlights museum practices. Chapters Four to Six are devoted respectively to the practices of ‘exhibition’ (the spatialities, rhetorics, and rationalities of display); ‘instruction’ (the educational uses of museum objects); and ‘supply’ (the circulation of objects). Part Three turns to specific objects and their biographies. Chapters Seven and Eight trace respectively the production, circulation and reception of a totem pole from British Columbia and a timber trophy from Tasmania, to demonstrate how objects acquire diverse meanings in diverse contexts, and how they are used to impart meaning to particular sites. In conclusion, Chapter Nine reflects on the cumulative findings of the thesis and on its potential outcomes, and it looks beyond the thesis to recommend areas for future research and practice
Nautical Votive Offerings and Imaginative Speculation in Góngora's Soledad primera
No full textWith a particular focus on lines 29-33 and 477-80, this article analyzes the motif of the ex-voto or votive offering in Góngora’s Soledad primera. In relation to Golden-Age ex-votos more generally, both in popular practice and in literary convention, it identifies three characteristics that are central to Góngora’s development of the motif. These are the ex-voto’s capacity to signify in a metonymic mode, its fragmentary and ephemeral nature, and its sacralizing potential when exhibited beyond the bounds of the conventional sanctuary. The discussion suggests ways in which close attention to Góngora’s techniques in developing votive imagery can enhance a reading of the ‘grillo torneado’ conceit in lines 849-53 of the Soledad segunda, and can ultimately shed light on the imaginative, persuasive force that Góngora perceived in the votive artefact and its poetic analogues
Clostridium difficile: Infection and Immunity
No full textClostridium difficile is a Gram positive pathogen of significant importance in the UK, Europe and the USA. No vaccine has been developed and current treatments are focused on hospital management and the use of antibiotics. The disease is spread in hospitals in the spore form and the role of spores in C. difficile infecton is poorly understood. In this project spores of C. difficile have been characterised. The proteins from the outermost layers of the spore were identified and the genes cloned. Three of these surface proteins have unique enzymatic properties that maybe important for symptoms of disease. The ability of C. difficile spores to adhere to intestinal cells was found to be far greater than with live cells and through this we have identified that the spore may play an important role in colonisation. The regulation of spore coat gene expression during sporulation was also examined and temporal phases of genes expression identified. A major part of this project was to develop a mucosal vaccine to C. difficile. The approach used was to clone the C-terminus of toxin A onto the surface of Bacillus subtilis spores and use these recombinant spores to immunise mice and hamsters. We found that oral delivery of these spores conferred 75% protection to C. difficile infection in a hamster model of infection. Further, parenteral immunisation of the same antigens (toxin A and B) failed to generate mucosal responses and this showed that mucosal immunisation is critical for good protection. Finally, we found that antibodies to the C-terminus of toxin A were cross reactive to the C-terminus of toxin B. This showed that mucosal delivery of just the C-terminus of toxin A is sufficient to confer protection in an animal model of infection. The outcome of this work is that we have shown the parameters for successful immunisation and vaccination against C. difficile
Fingerprinting Codes and Separating Hash Families
No full textThe thesis examines two related combinatorial objects, namely fingerprinting codes and separating hash families. Fingerprinting codes are combinatorial objects that have been studied for more than 15 years due to their applications in digital data copyright protection and their combinatorial interest. Four well-known types of fingerprinting codes are studied in this thesis; traceability, identifiable parent property, secure frameproof and frameproof. Each type of code is named after the security properties it guarantees. However, the power of these four types of fingerprinting codes is limited by a certain condition. The first known attempt to go beyond that came out in the concept of two-level traceability codes, introduced by Anthapadmanabhan and Barg (2009). This thesis extends their work to the other three types of fingerprinting codes, so in this thesis four types of two-level fingerprinting codes are defined. In addition, the relationships between the different types of codes are studied. We propose some first explicit non-trivial con- structions for two-level fingerprinting codes and provide some bounds on the size of these codes. Separating hash families were introduced by Stinson, van Trung, and Wei as a tool for creating an explicit construction for frameproof codes in 1998. In this thesis, we state a new definition of separating hash families, and mainly focus on improving previously known bounds for separating hash families in some special cases that related to fingerprinting codes. We improve upper bounds on the size of frameproof and secure frameproof codes under the language of separating hash families
Curating Science in an Age of Empire: Kew's Museum of Economic Botany
No full textThis thesis considers the history and significance of the Museum of Economic Botany at the Royal Botanic Gardens, Kew, focussing especially on the period from its opening in 1847 to the eve of the First World War. Looking specifically at the Museum’s collection of wood specimens and artefacts, it seeks to understand the nature of economic botany during this period, and to evaluate the contribution made to the field by the Kew Museum. Through examination of the Museum’s practices, networks, spaces, and objects, it sets out to address the question: how do museums produce scientific knowledge? Part One sets the context. Chapter One provides a brief historical account of nineteenth-century economic botany and the Museum. Chapter Two offers a critical overview of literatures on Kew and economic botany; on the role of place in the production, circulation, and reception of scientific knowledge; and on the role of the public museum in Victorian science and culture. It also outlines the conceptual framework of the thesis. Chapter Three presents an account of the methodology and sources. Part Two highlights museum practices. Chapters Four to Six are devoted respectively to the practices of ‘exhibition’ (the spatialities, rhetorics, and rationalities of display); ‘instruction’ (the educational uses of museum objects); and ‘supply’ (the circulation of objects). Part Three turns to specific objects and their biographies. Chapters Seven and Eight trace respectively the production, circulation and reception of a totem pole from British Columbia and a timber trophy from Tasmania, to demonstrate how objects acquire diverse meanings in diverse contexts, and how they are used to impart meaning to particular sites. In conclusion, Chapter Nine reflects on the cumulative findings of the thesis and on its potential outcomes, and it looks beyond the thesis to recommend areas for future research and practice
Accounting and the absence of a business economics tradition in the United Kingdom
No full textThe chapter explains why business economics did not emerge as a distinct discipline in the UK, and examines the extent to which accounting filled the gap left by this in UK universities
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