2 results
11 - Health libraries
- from PART 2 - EBLIP IN ACTION
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- By Jonathan D. Eldredge, Associate Professor at the University of New Mexico., Joanne Gard Marshall, MLS MHSc PhD spent 16 years as a medical librarian before becoming a faculty member at the University of Toronto in 1987., Alison Brettle, Reader in Evidence Based Practice and Director of Post Graduate Research in the School of Nursing, Midwifery and Social Work Research at the University of Salford, UK., Heather N. Holmes, MLIS AHIP is the Associate Director of Libraries with a faculty appointment of Associate Professor at the Medical University of South Carolina, Lotta Haglund, MLIS is Head of Library and Archive at the Swedish School of Sport and Health Sciences, in Stockholm, Sweden since 2012, Rick Wallace, Professor and Associate Director at the Quillen College of Medicine Library at East Tennessee State University in Johnson City, Tennessee.
- Edited by Allison Brettle, Denise Koufogiannakis
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- Book:
- Being Evidence Based in Library and Information Practice
- Published by:
- Facet
- Published online:
- 08 June 2018
- Print publication:
- 31 August 2016, pp 121-132
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- Chapter
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Summary
Introduction
The historical evidence suggests that the health professions might never have developed EBP had it not been for the development of sophisticated research tools such as PubMed/MEDLINE and the Cochrane Library for identifying authoritative evidence (Eldredge, 2008a). By working with health professionals in using these tools, health librarians were pivotal figures in the development of Evidence Based Medicine (EBM) and the broader EBP movement. From supporting health professionals in EBP, health librarians have gone on to develop and use evidence within their professional practices – EBLIP. This chapter will provide a context for health librarian's work, describe EBLIP within the health library field and the state of the evidence base, and discuss the types of evidence used by health librarians. Two case studies show how EBLIP has been translated into practice and demonstrate how health librarians continue to push the boundaries of EBLIP. Finally, the future directions for research and EBLIP practice will be considered within a health library context.
The health library context
Health librarians often collaborate with other health professionals in a fast-paced environment that demands high levels of accountability for the accuracy of their work. Any mistakes can result in missed diagnoses, inappropriate treatments, incorrectly trained health professionals (Maggio et al., 2015) or misguided research projects. Many health librarians take years to establish credibility for their expert skills among other health professionals (Hannigan and Eldredge, 2014). With increasing frequency, health librarians work outside of physical libraries in roles as embedded colleagues, liaisons, clinical librarians, informaticists and informaticians; therefore, throughout this chapter the term health librarian will be used to describe all of these roles.
The context in which health librarians work is continuing to change (Funk, 2013). At one time, the majority of health librarians worked in hospital libraries. Now, in the USA many librarians work in centralized academic health-science centre libraries that co-ordinate access to electronic databases for their users, including health professionals and staff in affiliated hospitals. The National Library of Medicine in the USA coordinates outreach and other centralized functions. In the UK, health librarians work in hospitals, academic institutions and, increasingly, throughout other NHS organizations. Collections for NHS staff are centralized and health libraries are monitored and supported by a national Library and Knowledge Service.
On the roles of chord-wise flexibility in a flapping wing with hovering kinematics
- JEFF D. ELDREDGE, JONATHAN TOOMEY, ALBERT MEDINA
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- Journal:
- Journal of Fluid Mechanics / Volume 659 / 25 September 2010
- Published online by Cambridge University Press:
- 24 June 2010, pp. 94-115
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- Article
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The aerodynamic performance of a flapping two-dimensional wing section with simplified chord-wise flexibility is studied computationally. Bending stiffness is modelled by a torsion spring connecting two or three rigid components. The leading portion of the wing is prescribed with kinematics that are characteristic of biological hovering, and the aft portion responds passively. Coupled simulations of the Navier–Stokes equations and the wing dynamics are conducted for a wide variety of spring stiffnesses and kinematic parameters. Performance is assessed by comparison of the mean lift, power consumption and lift per unit power, with those from an equivalent rigid wing, and two cases are explored in greater detail through force histories and vorticity snapshots. From the parametric survey, four notable mechanisms are identified through which flexible wings behave differently from rigid counterparts. Rigid wings consistently require more power than their flexible counterparts to generate the same kinematics, as passive deflection leads to smaller drag and torque penalties. Aerodynamic performance is degraded in very flexible wings undergoing large heaving excursions, caused by a premature detachment of the leading-edge vortex. However, a mildly flexible wing has consistently good performance over a wide range of phase differences between pitching and heaving – in contrast to the relative sensitivity of a rigid wing to this parameter – due to better accommodation of the shed leading-edge vortex into the wake during the return stroke, and less tendency to interact with previously shed trailing-edge vortices. Furthermore, a flexible wing permits lift generation even when the leading portion remains nearly vertical, as the wing passively deflects to create an effectively smaller angle of attack, similar to the passive pitching mechanism recently identified for rigid wings. It is found that an effective pitch angle can be defined that accounts for wing deflection to align the results with those of the equivalent rigid wing.