16,021 research outputs found

    Performing health identities on social media: An online observation of Facebook profiles

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    publisher: Elsevier articletitle: Performing health identities on social media: An online observation of Facebook profiles journaltitle: Discourse, Context & Media articlelink: http://dx.doi.org/10.1016/j.dcm.2015.11.003 content_type: article copyright: © 2015 Elsevier Ltd. All rights reserved.This study was supported by the UK Economic and Social Science Research Council (Grant number: ES/K005103/1)

    Star-forming Galaxies in the 'Redshift Desert'

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    We describe results of optical and near-IR observations of a large spectroscopic sample of star-forming galaxies photometrically-selected to lie in the redshift range 1.4 < z < 2.5, often called the ``redshift desert'' because of historical difficulty in obtaining spectroscopic redshifts in this range. We show that the former ``redshift desert'' is now very much open to observation.Comment: 10 pages, 6 figures, to appear in the Proceedings of the ESO/USM/MPE Workshop on "Multiwavelength Mapping of Galaxy Formation and Evolution", eds. R. Bender and A. Renzin

    Expanding the Life-Span, Life-Space Approach using Critical Race Theory and Intersectionality

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    Super’s (1980, 1996) life-span, life-space approach of career development has had a major influence on the field of career counseling by shifting the focus beyond a ‘singular point of entry’ into to careers to one multiple transition points and trajectories. While Super’s body of theoretical and empirical contributions to the field of career development are vast, the theory does not adequately address the experiences of Black youth. This article focuses on both theory and praxis by discussing the life-span, life-space approach in the context of career development of Black youth. We describe how critical race theory and intersectionality can be used as key organizing principles in an expanded framework along with Super’s life-span, life-space approach to guide practices in college and career counseling. We end with a discussion of the implications for practice

    Primary education for global learning and sustainability

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    This is one of a series of research reports commissioned by the Cambridge Primary Review Trust (CPRT), a notfor-profit company established in December 2012 with the aim of consolidating and building on the evidence, findings and principles of the Cambridge Primary Review. Cambridge Primary Review Trust is supported by Pearson Education, based at the University of York and chaired by Professor Robin Alexander. A briefing which summarises key issues from this report is also available. The report and briefing may be downloaded from the Trust’s website: www.cprtrust.org.uk. The website also provides information and other reports in this series, and about the many publications of the Cambridge Primary Review

    Influence of inversion on Mg mobility and electrochemistry in spinels

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    Magnesium oxide and sulfide spinels have recently attracted interest as cathode and electrolyte materials for energy-dense Mg batteries, but their observed electrochemical performance depends strongly on synthesis conditions. Using first principles calculations and percolation theory, we explore the extent to which spinel inversion influences Mg2+^{2+} ionic mobility in MgMn2_2O4_4 as a prototypical cathode, and MgIn2_2S4_4 as a potential solid electrolyte. We find that spinel inversion and the resulting changes of the local cation ordering give rise to both increased and decreased Mg2+^{2+} migration barriers, along specific migration pathways, in the oxide as well as the sulfide. To quantify the impact of spinel inversion on macroscopic Mg2+^{2+} transport, we determine the percolation thresholds in both MgMn2_2O4_4 and MgIn2_2S4_4. Furthermore, we analyze the impact of inversion on the electrochemical properties of the MgMn2_2O4_4 cathode via changes in the phase behavior, average Mg insertion voltages and extractable capacities, at varying degrees of inversion. Our results confirm that inversion is a major performance limiting factor of Mg spinels and that synthesis techniques or compositions that stabilize the well-ordered spinel structure are crucial for the success of Mg spinels in multivalent batteries

    Mangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealand

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    The middle Miocene Mangarara Formation is a thin (1–60 m), laterally discontinuous unit of moderately to highly calcareous (40–90%) facies of sandy to pure limestone, bioclastic sandstone, and conglomerate that crops out in a few valleys in North Taranaki across the transition from King Country Basin into offshore Taranaki Basin. The unit occurs within hemipelagic (slope) mudstone of Manganui Formation, is stratigraphically associated with redeposited sandstone of Moki Formation, and is overlain by redeposited volcaniclastic sandstone of Mohakatino Formation. The calcareous facies of the Mangarara Formation are interpreted to be mainly mass-emplaced deposits having channelised and sheet-like geometries, sedimentary structures supportive of redeposition, mixed environment fossil associations, and stratigraphic enclosure within bathyal mudrocks and flysch. The carbonate component of the deposits consists mainly of bivalves, larger benthic foraminifers (especially Amphistegina), coralline red algae including rhodoliths (Lithothamnion and Mesophyllum), and bryozoans, a warm-temperate, shallow marine skeletal association. While sediment derivation was partly from an eastern contemporary shelf, the bulk of the skeletal carbonate is inferred to have been sourced from shoal carbonate factories around and upon isolated basement highs (Patea-Tongaporutu High) to the south. The Mangarara sediments were redeposited within slope gullies and broad open submarine channels and lobes in the vicinity of the channel-lobe transition zone of a submarine fan system. Different phases of sediment transport and deposition (lateral-accretion and aggradation stages) are identified in the channel infilling. Dual fan systems likely co-existed, one dominating and predominantly siliciclastic in nature (Moki Formation), and the other infrequent and involving the temperate calcareous deposits of Mangarara Formation. The Mangarara Formation is an outcrop analogue for middle Miocene-age carbonate slope-fan deposits elsewhere in subsurface Taranaki Basin, New Zealand

    The Altitude Effect on Air Speed Indicators

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    The object of this report is to present the results of a theoretical and experimental study of the effect, on the performance of air speed indicators, of the different atmospheric conditions experienced at various altitudes
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