842 research outputs found

    Bar-holding prosthetic limb

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    A prosthetic device for below-the-elbow amputees is disclosed. The device has a removable effector, which is attached to the end of an arm cuff. The effector is comprised of a pair of C-shaped members that are oriented so as to face each other. Working in concert, the C-shaped members are able to hold a bar such as a chainsaw handle. A flat spring is fitted around the C-shaped members to hold them together

    Scalable Bayesian modeling, monitoring and analysis of dynamic network flow data

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    Traffic flow count data in networks arise in many applications, such as automobile or aviation transportation, certain directed social network contexts, and Internet studies. Using an example of Internet browser traffic flow through site-segments of an international news website, we present Bayesian analyses of two linked classes of models which, in tandem, allow fast, scalable and interpretable Bayesian inference. We first develop flexible state-space models for streaming count data, able to adaptively characterize and quantify network dynamics efficiently in real-time. We then use these models as emulators of more structured, time-varying gravity models that allow formal dissection of network dynamics. This yields interpretable inferences on traffic flow characteristics, and on dynamics in interactions among network nodes. Bayesian monitoring theory defines a strategy for sequential model assessment and adaptation in cases when network flow data deviates from model-based predictions. Exploratory and sequential monitoring analyses of evolving traffic on a network of web site-segments in e-commerce demonstrate the utility of this coupled Bayesian emulation approach to analysis of streaming network count data.Comment: 29 pages, 16 figure

    Rotationally actuated prosthetic helping hand

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    A prosthetic device has been developed for below-the-elbow amputees. The device consists of a cuff, a stem, a housing, two hook-like fingers, an elastic band for holding the fingers together, and a brace. The fingers are pivotally mounted on a housing that is secured to the amputee's upper arm with the brace. The stem, which also contains a cam, is rotationally mounted within the housing and is secured to the cuff, which fits over the amputee's stump. By rotating the cammed stem between the fingers with the lower arm, the amputee can open and close the fingers

    Integrating subjective recovery and stigma resistance in individuals with schizophrenia: a narrative review and theoretical integration

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    Stigmatised attitudes are known to be associated with negative outcomes in schizophrenia, yet there is little focus on the role of stigma in the recovery process. Attempts to develop interventions to reduce self-stigma in schizophrenia have not been found effective. This paper presents a theoretical integration based on a narrative review of the literature. PsycINFO, Medline and Embase databases were searched up to the 11th December 2023. Studies were included if they were: i) empirical studies using qualitative, quantitative or mixed methods studies investigating mental health stigma; ii) included participants based in the United Kingdom, fluent in English, between the ages of 16 and 70, meeting criteria for a schizophrenia spectrum diagnosis. Fourteen studies were included. In Part 1, we propose a novel theoretical model derived from a synthesis of service-user perspectives on the relationship between stigma and schizophrenia. Stigmatised attitudes were commonly perceived to be caused by a lack of education and further exacerbated by disinformation primarily through the media and cultural communities. Stigma led to negative self-perceptions, negative emotional responses, social isolation and increased symptom severity, ultimately acting as a barrier to recovery. In Part 2, we identify several factors that ameliorate the impact of stigma and promote clinical and subjective recovery among service-users: education, empowerment, self-efficacy, self-acceptance, hope and social support. We argue that the notion of stigma resistance may be helpful in developing new interventions aimed at promoting recovery in individuals with schizophrenia. Wider implications are discussed and recommendations for future research and practice are explored.</p

    Effectiveness of group-based self-management education for individuals with Type 2 diabetes:A systematic review with meta-analyses and meta-regression

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    Aims: Patient education for the management of Type 2 diabetes can be delivered in various forms, with the goal of promoting and supporting positive self-management behaviours. This systematic review aimed to determine the effectiveness of group-based interventions compared with individual interventions or usual care for improving clinical, lifestyle and psychosocial outcomes in people with Type 2 diabetes. Methods: Six electronic databases were searched. Group-based education programmes for adults with Type 2 diabetes that measured glycated haemoglobin (HbA1c) and followed participants for ≥ 6 months were included. The primary outcome was HbA1c, and secondary outcomes included fasting blood glucose, weight, body mass index, waist circumference, blood pressure, blood lipid profiles, diabetes knowledge and self-efficacy. Results: Fifty-three publications describing 47 studies were included (n = 8533 participants). Greater reductions in HbA1c occurred in group-based education compared with controls at 6–10 months [n = 30 studies; mean difference (MD) = 3 mmol/mol (0.3%); 95% confidence interval (CI): −0.48, −0.15; P = 0.0002], 12–14 months [n = 27 studies; MD = 4 mmol/mol (0.3%); 95% CI: −0.49, −0.17; P < 0.0001], 18 months [n = 3 studies; MD = 8 mmol/mol (0.7%); 95% CI: −1.26, −0.18; P = 0.009] and 36–48 months [n = 5 studies; MD = 10 mmol/mol (0.9%); 95% CI: −1.52, −0.34; P = 0.002], but not at 24 months. Outcomes also favoured group-based education for fasting blood glucose, body weight, waist circumference, triglyceride levels and diabetes knowledge, but not at all time points. Interventions facilitated by a single discipline, multidisciplinary teams or health professionals with peer supporters resulted in improved outcomes in HbA1c when compared with peer-led interventions. Conclusions: Group-based education interventions are more effective than usual care, waiting list control and individual education at improving clinical, lifestyle and psychosocial outcomes in people with Type 2 diabetes.No Full Tex

    DIGITAL READING: A COMPUTATIONAL APPROACH TO LITERARY STUDIES WITH APPLICATIONS IN BRITISH LITERARY HISTORY

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    Work intersecting literary studies and computerized text analysis involves balancing humanistic respect for ambiguity and contradiction with technical demands for clear and precise representation. This dissertation considers an action-based research paradigm to historical studies of this type, analyzing this work against the background of machine translation and information retrieval. After developing a conceptual understanding of how this interaction works, I present three practical case studies that demonstrate application of the conceptual model in interpretive situations drawn from British literary history. Finally, this dissertation reflects on the proposed model and describes how the different modes of research in the dissertation (action-oriented, historical, and technical) contribute to the conceptualization that emerges in the study.Doctor of Philosoph

    Fabrication and Testing of Low-Energy Calcium Sulfoaluminate-Belite Cements that Utilize Circulating Fluidized Bed Combustion By-Products

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    The utilization of circulating fluidized bed combustion (CFBC) ash to make cement products that provide added value and offset CO2 production is the objective of this research. CFBC burns coal in the presence of a bed of slaked limestone, which effectively absorbs sulfur dioxide (SO2) to form anhydrite (CaSO4). CFBC produces two kinds of spent bed materials, coarse bottom ash and a much finer fly ash. Both of these products are very high in calcium. When properly conditioned, these materials are capable of acting as hydraulic cements, forming both calcium aluminosulfate minerals, most importantly ettringite, as well as calcium-alumina-silica gels, like that formed from Portland cement. The research to generate calcium sulfoaluminate-belite (CSAB) cement was centered on two components. The first was the production of a cement that maximizes the proportion of coal combustion by-products while achieving acceptable strength development. The second component focused on optimizing the laboratory-derived CSAB cement to have comparable strength characteristics with commercial CSAB cements
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