1,069 research outputs found

    Developing flamingo husbandry practices through workshop communication

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    ArticleZoos are duty-bound to provide excellent welfare standards for the species that they keep. Curators and keepers have a role to play in ensuring that husbandry regimes are relevant and mimic a species’ natural environment. This paper explains the key outcomes from ABWAK’s (Association of British and Irish Wild Animal Keepers) first national flamingo keepers’ workshop. Research on flamingo breeding is well documented in the literature, but research into other aspects of husbandry may develop flamingo welfare further. By engaging keepers and academics with a direct influence over flamingo management, questions relating to best practice can be answered to establish areas of common good practice as well as novel approaches. Topics presented for discussion at the workshop focused on 1) informed enclosure design, 2) relevant enrichment ideas and 3) "promotion" of flamingos to the zoo visitor, with the aim of having a positive impact on the birds’ quality of life and their value as a zoo exhibit. Outcomes generated included the development of enrichment and husbandry modifications that may enhance flamingo activity patterns and their display to zoo visitors. Many aspects of regular flamingo husbandry can have an enriching influence on the birds’ lives, therefore encouraging zoo professionals to share ideas may benefit many flamingos in many zoos. Through the medium of a workshop, husbandry techniques for specialist species such as the flamingo can be shared and developed

    The effectiveness of simulated robots for supporting the learning of introductory programming: a multi-case case study

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    This work investigates the effectiveness of simulated robots as tools to support the learning of programming. After the completion of a Systematic Review and exploratory research a multi-case case study was undertaken. A simulator, named Kebot, was developed and used to run four ten-hour programming workshops. Twenty-three student participants (aged sixteen to eighteen) in addition to twenty-three pre-service, and three in-service, teachers took part. The effectiveness of this intervention was determined by considering opinions, attitudes and motivation as well as by analysing students’ programming performance. Pre- and post-questionnaires, in- and post-workshop exercises and interviews were used. Participants enjoyed learning using the simulator and believed the approach to be valuable and engaging. The performance of students indicates that the simulator aids learning as most completed tasks to a satisfactory standard. Evidence suggests robot simulators can offer an effective means of introducing programming. Recommendations to support the development of other simulators are provided.This is the accepted manuscript. The final version is available from Taylor & Francis at http://www.tandfonline.com/doi/full/10.1080/08993408.2014.963362#.VGH9boXziEo

    An Adaptive Computational Model for Predicting the Density Distribution of the Proximal Femur

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    A custom algorithm was developed to simulate adaptive boneremodeling. The process of adaptive bone remodeling can besimulated with a self-optimizing finite element method (FEM). Thebasic remodeling rule attempts to obtain a constant value for thestrain energy per unit bone mass, by adapting density. The precisesolution is dependent on the loads, initial conditions and theparameters in the remodeling rule. The aim of this study was toidentify how the bone density distribution of the proximal femurwas affected by parameters which govern the remodeling process.The forces at different phases of the gait cycle were applied asboundary conditions. The bone density distributions from theseforces were averaged to estimate the density distribution in theproximal femur. The effect of varying the spatial influencefunction, and the influence range on the converged solution wereinvestigated. It was shown that varying these parameters withinreasonable upper and lower bounds had very little impact on thequalitative form of the converged solution. In all cases, thesolutions obtained are comparable with the actual density in theproximal femur, as measured by DEXA scans

    Topological Entanglement of Polymers and Chern-Simons Field Theory

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    In recent times some interesting field theoretical descriptions of the statistical mechanics of entangling polymers have been proposed by various authors. In these approaches, a single test polymer fluctuating in a background of static polymers or in a lattice of obstacles is considered. The extension to the case in which the configurations of two or more polymers become non-static is not straightforward unless their trajectories are severely constrained. In this paper we present another approach, based on Chern--Simons field theory, which is able to describe the topological entanglements of two fluctuating polymers in terms of gauge fields and second quantized replica fields.Comment: 16 pages, corrected some typos, added two new reference

    Venus/Mercury swingby with Venus capsule. Preliminary science objectives and experiments for use in advanced mission studies

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    Venus/Mercury swingby with Venus capsule - preliminary science objectives and experiments for use in advanced mission studie

    What do we know about different models of providing palliative care? Findings from a systematic review of reviews.

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    BACKGROUND: A wide range of organisational models of palliative care exist. However, decision makers need more information about which models are likely to be most effective in different settings and for different patient groups. AIM: To identify the existing range of models of palliative care that have been evaluated, what is already known and what further information is essential if the most effective and cost-effective models are to be identified and replicated more widely. DESIGN: A review of systematic and narrative reviews according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Study quality was assessed using the AMSTAR (A MeaSurement Tool to Assess Reviews) tool. DATA SOURCES: MEDLINE, EMBASE, PsycINFO, CINAHL, Cochrane Library, Web of Science and ASSIA were searched for reviews about models of service provision from 2000 to 2014 and supplemented with Google searches of the grey literature. RESULTS: Much of the evidence relates to home-based palliative care, although some models are delivered across care settings. Reviews report several potential advantages and few disadvantages of models of palliative care delivery. However, under-reporting of the components of intervention and comparator models are major barriers to the evaluation and implementation of models of palliative care. CONCLUSION: Irrespective of setting or patient characteristics, models of palliative care appear to show benefits and some models of palliative care may reduce total healthcare costs. However, much more detailed and systematic reporting of components and agreement about outcome measures is essential in order to understand the key components and successfully replicate effective organisational models

    Entangled Polymer Rings in 2D and Confinement

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    The statistical mechanics of polymer loops entangled in the two-dimensional array of randomly distributed obstacles of infinite length is discussed. The area of the loop projected to the plane perpendicular to the obstacles is used as a collective variable in order to re-express a (mean field) effective theory for the polymer conformation. It is explicitly shown that the loop undergoes a collapse transition to a randomly branched polymer with RlN14R\propto lN^\frac{1}{4}.Comment: 17 pages of Latex, 1 ps figure now available upon request, accepted for J.Phys.A:Math.Ge

    Topological interactions in systems of mutually interlinked polymer rings

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    The topological interaction arising in interlinked polymeric rings such as DNA catenanes is considered. More specifically, the free energy for a pair of linked random walk rings is derived where the distance RR between two segments each of which is part of a different ring is kept constant. The topology conservation is imposed by the Gauss invariant. A previous approach (M.Otto, T.A. Vilgis, Phys.Rev.Lett. {\bf 80}, 881 (1998)) to the problem is refined in several ways. It is confirmed, that asymptotically, i.e. for large RRGR\gg R_G where RGR_G is average size of single random walk ring, the effective topological interaction (free energy) scales R4\propto R^4.Comment: 16 pages, 3 figur

    Logic models help make sense of complexity in systematic reviews and health technology assessments

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    OBJECTIVE: To describe the development and application of logic model templates for systematic reviews and health technology assessments (HTA) of complex interventions STUDY DESIGN AND SETTING: This study demonstrates the development of a method to conceptualise complexity and make underlying assumptions transparent. Examples from systematic reviews with specific relevance to sub-Saharan Africa (SSA) and other low- and middle-income countries (LMICs) illustrate its usefulness. RESULTS: Two distinct templates are presented: the system-based logic model, describing the system in which the interaction between participants, intervention and context takes place; and the process-orientated logic model, which displays the processes and causal pathways that lead from the intervention to multiple outcomes. CONCLUSION: Logic models can help authors of systematic reviews and HTAs to explicitly address and make sense of complexity, adding value by achieving a better understanding of the interactions between the intervention, its implementation and its multiple outcomes among a given population and context. They thus have the potential to help build systematic review capacity -in SSA and other LMICs - at an individual level, by equipping authors with a tool that facilitates the review process; and at a system-level, by improving communication between producers and potential users of research evidence
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