1,721,442 research outputs found
A Correlation Between The Eclipse Depths Of Kepler Gas Giant Candidates And The Metallicities Of Their Parent Stars
Get PDFPrevious studies of the interior structure of transiting exoplanets have shown that the heavy-element content of gas giants increases with host star metallicity. Since metal-poor planets are less dense and have larger radii than metal-rich planets of the same mass, one might expect that metal-poor stars host a higher proportion of gas giants with large radii than metal-rich stars. Here I present evidence for a negative correlation at the 2.3 sigma level between eclipse depth and stellar metallicity in the Kepler gas giant candidates. Based on Kendall's tau statistics, the probability that eclipse depth depends on star metallicity is 0.981. The correlation is consistent with planets orbiting low-metallicity stars being, on average, larger in comparison with their host stars than planets orbiting metal-rich stars. Furthermore, since metal-rich stars have smaller radii than metal-poor stars of the same mass and age, a uniform population of planets should show a rise in median eclipse depth with [M/H]. The fact that I find the opposite trend indicates that substantial changes in the gas giant interior structure must accompany increasing [M/H]. I investigate whether the known scarcity of giant planets orbiting low-mass stars could masquerade as an eclipse depth-metallicity correlation, given the degeneracy between metallicity and temperature for cool stars in the Kepler Input Catalog. While the eclipse depth-metallicity correlation is not yet on firm statistical footing and will require spectroscopic [Fe/H] measurements for validation, it is an intriguing window into how the interior structure of planets and even the planet formation mechanism may be changing with Galactic chemical evolution.National Science Foundation AST-1055910Astronom
Nursing education and regulation: international profiles and perspectives
No full textThis review of nurse education and regulation in selected OECD countries forms part of ongoing work on contemporary nursing careers and working lives, based at the National Nursing Research Unit, King’s College London. The review was commissioned by the Department of Health to inform their work in considering the UK’s position in relation to the Bologna declaration and changes that may emanate from the implementation of Modernising Nursing Careers (DH 2006). While much of the information in the review was obtained from publications and websites, we also contacted key personnel in most of the countries included for an up-to-date review of developments in their country and would like to thank them all for providing this information
Dead Rat: In conversation with Dr Sarah Robinson
No full textInterview with Dr Sarah Robinson, artist and curator about her passion for alchemy, geology and material process.
Published in Printmaking Today, Vol 31, Issue 12
Replication Data for: Political Ideology Modifies the Effect of Glass Cliff Candidacies on Election Outcomes for Women in American State Legislative Races (2011 - 2016)
No full textCompilation of American state legislative election outcomes by district for both upper and lower chambers in each state (2011-2016), includes candidate gender and party, seat type, incumbency, and other variables. Additional data for state level legislative variables: proportion of women serving in each legislature in each chamber by party and state (2017), women's institutional resources, term limits, professionalism, and derived study measures (district seat winnability). Associated dataset codebooks and replication scripts (R) are catalogued for analysis provided in 'Political Ideology Modifies the Effect of Glass Cliff Candidacies on Election Outcomes for Women in American State Legislative Races (2011 - 2016)'.
Citations for original data sources are provided in the README.txt file associated to each replication folder. Data users are asked to cite the original sources in link with this compilation where applicable
Detection Of Low-Mass-Ratio Stellar Binary Systems
Get PDFO- and B-type stars are often found in binary systems, but the low binary mass-ratio regime is relatively unexplored due to observational difficulties. Binary systems with low mass ratios may have formed through fragmentation of the circumstellar disk rather than molecular cloud core fragmentation. We describe a new technique sensitive to G-and K-type companions to early B stars, a mass ratio of roughly 0.1, using high-resolution, high signal-to-noise spectra. We apply this technique to a sample of archived VLT/CRIRES observations of nearby B stars in the CO bandhead near 2300 nm. While there are no unambiguous binary detections in our sample, we identify HIP 92855 and HIP 26713 as binary candidates warranting follow-up observations. We use our non-detections to determine upper limits to the frequency of FGK stars orbiting early B-type primaries.National Science Foundation CAREER award ST-1055910University of Texas College of Natural SciencesAstronom
Nurses' job satisfaction in their early career: is it the same for all branches of nursing?
No full textAim To develop an early career job satisfaction instrument that is valid and reliable across the four UK nursing branches.Background Contemporary instruments are required to measure nurse job satisfaction and to explore potential links with quality of care and retention.Method(s) Factor analysis was used to explore and test the stability of job satisfaction components across branches and over time.Results Seven components (client care, staffing, development, relationships, education, work-life interface, resources) of job satisfaction were identified common to the adult, child and mental health branches that explained over 70% of the variance. The factor structure remained reasonably stable across time within each branch. Some differences between branches emerged at 6 and 18 months. The instrument has similarities and differences with existing generic and nursing facet job satisfaction scales.Conclusion Findings support a generic instrument that can be used to measure the job satisfaction of adult, child and mental health nurses in their early career.Implications for nursing management The instrument could be used for appraisal, annual staff surveys, for understanding retention locally and nationally, as an early warning system to identify organizational problems and to measure the impact of policies over time.<br/
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Exit via the gift shop
Get PDFThe gift shop is a collective endeavour by the editors and authors of this book, and the gifts on offer are as eclectic as the rest of the exhibition. There is plenty of the usual gift shop fare on display, but also some rather unusual items. Looking around the gift shop is another opportunity to reflect on the portraits in exhibition and consider the nature of academic careers. Within the gift shop, tensions and contradictions abound between the shop and the gifts, consumerism and the gift economy, the richness of academic life and its impoverishment through commercialisation. There is tension in the question mark over whether this gift shop does not sell anything, or whether everything inside it is for sale (and very expensive). And, in the meandering movement towards the exit, there is a tension between academic careers as a drive or flight towards vacating the premises vis-à-vis the lingering sense of vocation. Browsing the gift shop, the visitor may well find something to further provoke or inspire them, or at least make them smile. Visitors are invited to become a ‘critical friend’ of the ‘Doing Academic Careers Differently Gallery’ and return regularly for inspiration, courage, and hope
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Introduction: Entrance hall and cloakroom
Get PDFThis book is an outcome of more than a decade of research, conversations, and writing about contemporary academia. It is an outcome of many collective years of experiences of being academics, raging against academia’s many challenges and injustices, and trying to do things differently. It shares collective wisdom acquired by going against the grain of the suffocating linearity and normativity that are so often presumed necessary to achieve what narrowly counts as academic career success. The book is part of the project to give voice, space, and hope to visions of an alternative, more nurturing, diverse, and inclusive academia. The emphasis on academics’ official public profiles is subverted, delving beyond them to explore alternative ways of leading fulfilling academic careers. The book takes the form of a portrait exhibition consisting of nine galleries through which visitors can meander at will. From rejecting the pressure to focus on ‘one big thing’, to prioritising nurture and care, transcending disciplinary boundaries, reshaping own daily practice, connecting with communities, and being academics outside academia, the galleries offer those considering, starting, or developing an academic career a treasure trove of many alternative possibilities to forge their own career paths
Is satisfaction a direct predictor of nursing turnover?: Modelling the relationship between satisfaction, expressed intention and behaviour in a longitudinal cohort study.
No full textBackground: The theory of planned behaviour states that attitudinal variables (e.g. job satisfaction) only have an indirect effect on retention whereas intentions have a direct effect. This study uses secondary data from a longitudinal cohort of newly qualified nurses to test for the direct and indirect effects of job satisfaction (client care, staffing, development, relationships, education, work-life interface, resources, pay) and intentions to nurse on working as a nurse during the 3 years after qualification.Method: A national sample (England) of newly qualified (1997/98) nurses (n = 3669) were surveyed at 6 months, 18 months and 3 years. ANOVA and MANOVA were used for comparison of mean job satisfaction scores between groups; intentions to nurse (very likely, likely vs. unlikely, very unlikely and unable to say at this stage); working (or not working as a nurse) at each time-point. Indirect and direct effects were tested using structural equation and logistic regression models.Results: Intentions expressed at 6 months to nurse at 18 months were associated with higher scores on pay and relationships, and intentions at 3 years were associated with higher scores on care, development, relationships, work-life interface, resources, pay respectively. Intentions expressed at 18 months to nurse at 3 years were associated with higher scores on development, relationships, education and work-life interface. Associations with actual nursing were fewer. Those working as a nurse had higher satisfaction scores for development (18 months) and relationships (3 years). Regression models found significant associations between the pay and staffing factors and intentions expressed at 6 months to nurse at 18 months, and between pay and intentions to nurse at 3 years. Many of the associations between intentions and working as a nurse were significant. Development was the only job satisfaction factor significantly associated with working as a nurse and just at 18 months.Conclusion: Results partially support the theory of planned behaviour. Intentions expressed by nurses are stronger predictors of working as a nurse than job satisfaction. Retention strategies should focus on identifying nurses showing early signs of departure with emphasis on developmental aspects, mentoring and support.<br/
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