14,305 research outputs found

    Traditional academic posters: a suitable medium for knowledge transfer?

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    Fluid Balance and Management and the Critically Ill Woman

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    Specialist Monitoring Technology and Skills for the Critically Ill Woman

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    Identifying a policy makers target: an application to the Bank of Canada

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    We develop a new way to test hypotheses about policymakers' targets and implement that test for Canadian monetary policy. For example, if the Bank of Canada is targeting a 2 per cent inflation rate, and if the Bank's instrument takes eight quarters to affect inflation, then deviations of inflation from 2 per cent should be uncorrelated with the Bank's information set lagged eight quarters. We show that there was a major change in the Bank's objectives near the time when formal inflation targets were announced and that the Bank has indeed been targeting inflation since thenpostprin

    GOES dynamic propagation of attitude

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    The spacecraft in the next series of Geostationary Operational Environmental Satellites (GOES-Next) are Earth pointing and have 5-year mission lifetimes. Because gyros can be depended on only for a few years of continuous use, they will be turned off during routine operations. This means attitude must, at times, be determined without benefit of gyros and, often, using only Earth sensor data. To minimize the interruption caused by dumping angular momentum, these spacecraft have been designed to reduce the environmental torque acting on them and incorporate an adjustable solar trim tab for fine adjustment. A new support requirement for GOES-Next is that of setting the solar trim tab. Optimizing its setting requires an estimate of the unbalanced torque on the spacecraft. These two requirements, determining attitude without gyros and estimating the external torque, are addressed by replacing or supplementing the gyro propagation with a dynamic one, that is, one that integrates the rigid body equations of motion. By processing quarter-orbit or longer batches, this approach takes advantage of roll-yaw coupling to observe attitude completely without Sun sensor data. Telemetered momentum wheel speeds are used as observations of the unbalanced external torques. GOES-Next provides a unique opportunity to study dynamic attitude propagation. The geosynchronous altitude and adjustable trim tab minimize the external torque and its uncertainty, making long-term dynamic propagation feasible. This paper presents the equations for dynamic propagation, an analysis of the environmental torques, and an estimate of the accuracies obtainable with the proposed method

    Weak Gravitational Flexion

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    Flexion is the significant third-order weak gravitational lensing effect responsible for the weakly skewed and arc-like appearance of lensed galaxies. Here we demonstrate how flexion measurements can be used to measure galaxy halo density profiles and large-scale structure on non-linear scales, via galaxy-galaxy lensing, dark matter mapping and cosmic flexion correlation functions. We describe the origin of gravitational flexion, and discuss its four components, two of which are first described here. We also introduce an efficient complex formalism for all orders of lensing distortion. We proceed to examine the flexion predictions for galaxy-galaxy lensing, examining isothermal sphere and Navarro, Frenk & White (NFW) profiles and both circularly symmetric and elliptical cases. We show that in combination with shear we can precisely measure galaxy masses and NFW halo concentrations. We also show how flexion measurements can be used to reconstruct mass maps in 2-D projection on the sky, and in 3-D in combination with redshift data. Finally, we examine the predictions for cosmic flexion, including convergence-flexion cross-correlations, and find that the signal is an effective probe of structure on non-linear scales.Comment: 17 pages, including 12 figures, submitted to MNRA

    A discussion on research and appraisal within comparative perioperative professions: the potential contribution to ODP professional development

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    In October 2004, operating department practice (ODP) was the first additional profession to be included in the newly formed Health Professions Council (HPC). This final step towards formal regulation, established ODPs as professionals, and yet there still remains a disputed boundary with the Nursing profession, within the bounds of peri-operative care. A literature review showed instances of ODPs and theatre-based nurses who expressed unfounded and critical views, regarding the others profession. Much of the criticism of ODP followed the premise that Nursing was the caring profession, whilst that of ODP, was of a more technical nature. The considerable established history of the Nursing profession has leant to a significantly more developed framework of research and evidence-based practice that has helped to shape the way Nursing is perceived as a profession, from both within and without. There is however, comparatively little available research, generated by the ODP profession. Given that the governing bodies of both professions advocate continued professional development, evidence-based practice and the sharing of knowledge, research and appraisal has a vital role to play in the development of peri-operative practice. This article proposes that active utilisation of research, and the development of demonstrable evidence-based practice, would serve to benefit all peri-operative practitioners and improve clinical effectiveness across a wide spectrum. In addition to personal and professional development; transparency and the sharing of knowledge may help to unite the two professions, and perhaps dispel the unfounded judgements that are often present in the workplace

    The Utilisation of Music by Casino Managers: An Interview Study

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    Music is ubiquitous in retail and commercial environments, with some managers believing that music can enhance the customer experience, increase footfall and sales and improve consumer satisfaction. Casino gambling is popular in the United Kingdom and anecdotal evidence suggests that music is often present. However, little is known about the rationale for music use from the perspective of casino managers. In this study semi-structured interviews were conducted with five casino managers to establish their motivations for utilising music, the factors informing their choice of music and the extent to which music is used with the intention of influencing gambling behaviour. Results showed that casino managers utilised two types of music—recorded background music, often sourced via external music supply companies and live music. Live music was often situated away from the gaming floor and used primarily to accompany participation in non-gambling activities. Recorded background music was not used with the direct aim of influencing customers’ gambling behaviour, but to create the right atmosphere for gambling and to promote certain moods within the casinos. To achieve these aims casino managers manipulated the tempo, volume and genre of the recorded background music. Casino managers also reported that some gamblers listen to music via portable music players, possibly with the intention of customising their gambling experience. This study is unique as it has provided a first-hand account of casino managers’ implicit theories with regards to why they utilise music and the roles which music is considered to fulfil in casinos
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