2,276 research outputs found

    It all just clicked: a longitudinal perspective on transitions within University

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    This paper explores the transitions that a group of students, admitted from further education colleges as part of broader widening access initiative at a Scottish research–intensive university, made across the lifetime of their degrees. It investigates how they negotiate their learning careers beyond the first year, and how they (re)define their approaches to independent learning as they progress to the later years of their courses. Evidence is drawn from 20 students who were interviewed during each of their three or four years of study to provide a longitudinal account of their experiences of engagement and participation at the university. We draw attention to three ways in which the students made transitions across the course of their degrees: to increased knowledge of the conventions of academic writing; to enhanced critical skills; and to practical strategies to prioritise learning

    Linking morphodynamic response with sediment mass balance on the Colorado River in Marble Canyon: Issues of scale, geomorphic setting, and sampling design

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    Measurements of morphologic change are often used to infer sediment mass balance. Such measurements may, however, result in gross errors when morphologic changes over short reaches are extrapolated to predict changes in sediment mass balance for long river segments. This issue is investigated by examination of morphologic change and sediment influx and efflux for a 100 km segment of the Colorado River in Grand Canyon, Arizona. For each of four monitoring intervals within a 7 year study period, the direction of sand-storage response within short morphologic monitoring reaches was consistent with the flux-based sand mass balance. Both budgeting methods indicate that sand storage was stable or increased during the 7 year period. Extrapolation of the morphologic measurements outside the monitoring reaches does not, however, provide a reasonable estimate of the magnitude of sand-storage change for the 100 km study area. Extrapolation results in large errors, because there is large local variation in site behavior driven by interactions between the flow and local bed topography. During the same flow regime and reach-average sediment supply, some locations accumulate sand while others evacuate sand. The interaction of local hydraulics with local channel geometry exerts more control on local morphodynamic response than sand supply over an encompassing river segment. Changes in the upstream supply of sand modify bed responses but typically do not completely offset the effect of local hydraulics. Thus, accurate sediment budgets for long river segments inferred from reach-scale morphologic measurements must incorporate the effect of local hydraulics in a sampling design or avoid extrapolation altogether

    An evaluation of Fracture Liaison Services in the detection and management of osteoporotic fragility fractures: a narrative review

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    Objectives To evaluate the current evidence for whether Fracture Liaison Services are being utilised effectively in the UK to aid in the prevention of fragility fractures. Key findings Radiological under-reporting and non-standardised assessment of fragility fractures still persist, with low numbers of patients undergoing a risk assessment and treatment for secondary prevention of fracture. In order to improve care for these patients, the reporting of vertebral fractures must be improved and standardised in order to identify patients at increased risk of secondary fragility fractures. Fracture Liaison Services determine the need for anti-resorptive therapy for the prevention of future fragility fractures. Targeted treatment of at-risk patient groups has been shown to reduce the risk of further fracture. Conclusion Fracture Liaison Services have been shown to be cost effective, while reducing the risk of secondary fractures, but they are not currently offered by all NHS providers

    Nanoscale depth-resolved polymer dynamics probed by the implantation of low energy muons

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    The low energy muon (LEM) technique has been used to probe local changes in the dynamical spectrum of thin film polymer samples taking place as a function of the temperature and the implantation depth below the free surface. The studies have been made on samples of polydimethylsiloxane (PDMS) and polybutadiene (PB) using the transverse magnetic field (TF) configuration and diamagnetic probe muons. In PDMS evidence is found for suppression of the glass transition temperature near the surface, along with significantly modified dynamics in the near-surface region as well as at depths significantly below the surface. For PB the LEM technique reveals well-defined layers of dynamical and spatial inhomogeneity at depths of order 0.1–0.2 ÎŒm below the free surface. These inhomogeneous regions may be assigned to nanopores produced by solvent streaming during preparation of spin-cast films. A thermal annealing procedure is shown to significantly reduce the thickness of these inhomogeneous layers. These results demonstrate that using LEM in the TF configuration provides a promising new method for studying surface-modified local dynamics of polymers that is also able to reveal nanostructured buried layers in polymer films

    Acute Appendicitis after Liver Transplantation: A Case Report and Review of the Literature

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    Acute appendicitis is one of the most common etiologies for acute abdomen. However, fewer than 30 cases of acute appendicitis after liver transplantation have so far been reported in the literature. Previous case studies have concluded that acute appendicitis after liver transplantation may present differently than in non-immunosuppressed patients and thus may lead to more complications. Herein, we describe the fourth case of laparoscopic appendectomy in a 40-year-old female presenting with an acute abdomen, 10 years after orthotopic liver transplantation for autoimmune hepatitis. Additionally, we review the literature, and emphasize the importance for laparoscopic, rather than open appendectomy after liver transplantation. Overall, despite the small number of reported cases of appendicitis after orthotopic liver transplantation, we found the incidence and clinical presentation are similar to patients without liver transplantation. The etiologies for appendicitis in patients after liver transplantation may be different than in those not chronically immunosuppressed, with significantly less lymphoid hyperplasia and increased fecalith and cytomegaloviral infections. Preliminary results showed that laparoscopic appendectomy after liver transplantation results in decreased hospital stays and fewer complications

    Identities at odds: embedded and implicit language policing in the internationalized workplace

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    This study offers an interaction analytic account of how linguistic identities in internationalized workplaces in Denmark are indexed against members' institutional positions in particular interactional contexts. Where language policy may not be explicitly articulated between members, it is still embedded in how participants micro-manage their interactions and implicit in how members display orientations to deviance, in the case of encountering others in the workplace whose language repertoires or preferences do not meet with expectation pertaining to the institutional position they hold. The study uses recordings of naturally occurring interaction in different international workplace settings and argues for greater attention to be paid to the actual language-policy practices in international workplace settings, as an entry point into developing a more nuanced understanding of the practices through which professional identities are brought about, affirmed or contested, and the linguistic considerations that are implicated in this

    Benefits of Artificially Generated Gravity Gradients for Interferometric Gravitational-Wave Detectors

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    We present an approach to experimentally evaluate gravity gradient noise, a potentially limiting noise source in advanced interferometric gravitational wave (GW) detectors. In addition, the method can be used to provide sub-percent calibration in phase and amplitude of modern interferometric GW detectors. Knowledge of calibration to such certainties shall enhance the scientific output of the instruments in case of an eventual detection of GWs. The method relies on a rotating symmetrical two-body mass, a Dynamic gravity Field Generator (DFG). The placement of the DFG in the proximity of one of the interferometer's suspended test masses generates a change in the local gravitational field detectable with current interferometric GW detectors.Comment: 16 pages, 4 figure
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