1,283 research outputs found

    Escaping Christmas

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    An examination of the factors that influence the publication or non-publication of mental health nursing research presented at national or international nursing conferences

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    Mental health nurses are required to be able to identify and access the current evidence surrounding a particular topic and evaluate and decide upon the best care approach to people with mental health problems. This is aided by specific guidance on how to facilitate access to and deliver the best quality evidence-based care. This is most commonly acquired by accessing evidence through hand searching publications or through electronic sources (databases, web search engines or internet publications). However, evidence indicates that only a small proportion of mental health nursing research is published and that many nurses carry out research that is not published. Although, it is difficult to judge the quality of unpublished research the likelihood is that a number of high quality mental health nursing research projects are not published and are therefore not available to be evaluated as part of the evidence base of care. There has been relatively little examination of the reasons underpinning publication of nursing research. This project examined the factors that influence the publication or non-publication of mental health nursing research presented at national or international nursing conferences in the UK

    Characterisation of the radio noise environment in New Zealand

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    A methodology for the measurement of the radio frequency environment close to the radio noise floor is presented for urban, suburban and rural areas within New Zealand for the purposes of characterisation and trend monitoring by radio spectrum managers. Flux density measurements in bands within a range of frequencies from 80 MHz to 8 GHz have been made in urban, suburban and rural areas of New Zealand during 2007 and 2008. An analysis of the band occupancy is presented in summary form. These summaries are intended as a starting point for radio spectrum usage and can be used as a reference for any future measurements. A description of the computer directories and charts resulting from these measurements, using 20 MHz bandwidths have also been included. All the results for the work have been collated in a set of computer directories named “NZRFI Directories 2007 2008”, which are intended as a reference for use in the determination of local activity in particular frequency ranges. A disc with the full range measurement spectral density charts and channel occupancy charts accompanies this work. Also included on the disc are sets of 20 MHz band charts for some urban, suburban and rural location measurements

    The Hyporheic Zone

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    This chapter introduces the key concepts of the hyporheic zone. It considers the research context in terms of the Water Framework Directive and the breadth of literature associated with the hyporheic zone. The interplay between hydrological, chemical and biological processes is explained, and a range of different approaches to field sampling and monitoring are described. A framework for considering the factors contributing to the conceptualisation of the hyporheic zone is presented, with an emphasis on the importance of understanding streambed sediments and their architecture to assess hydraulic functioning and modelling of the hyporheic zone. The hyporheic zone in karst catchments is also given specific consideration. Returning to the theme of linked hydrological, biological and chemical processes, the results of two case studies demonstrate the value of integrating hydrological measurements with geochemistry in order to elucidate hyporheic zone functioning

    Local Strain Measurement of Kevlar Strand with Fiber Optic Bragg Grating

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    1987 DuPont manufactured 4560 denier Kevlar/Epoxy Strands were instrumented with nine and three sensors each. Stress tests were performed at 30,45,60,70 and 80% of ultimate strength with dwell times of 10,000 seconds. FBG showed uneven stress levels which is contrary to conventional observation

    Strain Measurement during Stress Rupture of Composite Over-Wrapped Pressure Vessel with Fiber Bragg Gratings Sensors

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    Fiber optic Bragg gratings were used to measure strain fields during Stress Rupture (SSM) test of Kevlar Composite Over-Wrapped Pressure Vessels (COPV). The sensors were embedded under the over-wrapped attached to the liner released from the Kevlar and attached to the Kevlar released from the liner. Additional sensors (foil gages and fiber bragg gratings) were surface mounted on the COPY liner

    Paradoxical facilitation alongside interhemispheric inhibition

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    Neurophysiological experiments using transcranial magnetic stimulation (TMS) have sought to probe the function of the motor division of the corpus callosum. Primary motor cortex sends projections via the corpus callosum with a net inhibitory influence on the homologous region of the opposite hemisphere. Interhemispheric inhibition (IHI) experiments probe this inhibitory pathway. A test stimulus (TS) delivered to the motor cortex in one hemisphere elicits motor evoked potentials (MEPs) in a target muscle, while a conditioning stimulus (CS) applied to the homologous region of the opposite hemisphere modulates the effect of the TS. We predicted that large CS MEPs would be associated with increased IHI since they should be a reliable index of how effectively contralateral motor cortex was stimulated and therefore of the magnitude of interhemispheric inhibition. However, we observed a strong tendency for larger CS MEPs to be associated with reduced interhemispheric inhibition which in the extreme lead to a net effect of facilitation. This surprising effect was large, systematic, and observed in nearly all participants. We outline several hypotheses for mechanisms which may underlie this phenomenon to guide future research. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00221-021-06183-9

    A formulation of the allocation of attack aircraft to fixed location targets

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    Allocation of resources has become a classical problem in optimization by mathematical programming. In the field of military applications attack aircraft assignment has been treated widely by deterministic and/or linear models. However, destruction of a target is no certainty nor is damage inflicted on a target linear with respect to the number of weapons delivered on it. Recent extensions In the field of nonlinear programming in conjunction with the widespread use of electronic digital computers permit a more realistic approach to this problem. this paper formulates a stochastic nonlinear model for assigning a force of attack aircraft on a single sortie against fixed location targets. The number of aircraft alive at weapons release on ant pass of a series against a given target is treated as a random variable. The total number of damage to all targets is taken as the measure of effectiveness and a particular form of the objective function derived. The parameters of the model and the form of the constraint equations are also discussed.http://www.archive.org/details/formulationofall00bankLieutenant Commander, United States NavyLieutenant, United States NavyApproved for public release; distribution is unlimited

    The order of the phase transition in 3d U(1)+Higgs theory

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    We study the order of the phase transition in the 3d U(1)+Higgs theory, which is the Ginzburg-Landau theory of superconductivity. We confirm that for small scalar self-coupling the transition is of first order. For large scalar self-coupling the transition ceases to be of first order, and a non-vanishing scalar mass suggests that the transition may even be of higher than second order.Comment: Poster at LATTICE96(electroweak). 4 pages, 5 figure
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