4,842 research outputs found

    The solar influence on the probability of relatively cold UK winters in the future

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    Recent research has suggested that relatively cold UK winters are more common when solar activity is low (Lockwood et al 2010 Environ. Res. Lett. 5 024001). Solar activity during the current sunspot minimum has fallen to levels unknown since the start of the 20th century (Lockwood 2010 Proc. R. Soc. A 466 303–29) and records of past solar variations inferred from cosmogenic isotopes (Abreu et al 2008 Geophys. Res. Lett. 35 L20109) and geomagnetic activity data (Lockwood et al 2009 Astrophys. J. 700 937–44) suggest that the current grand solar maximum is coming to an end and hence that solar activity can be expected to continue to decline. Combining cosmogenic isotope data with the long record of temperatures measured in central England, we estimate how solar change could influence the probability in the future of further UK winters that are cold, relative to the hemispheric mean temperature, if all other factors remain constant. Global warming is taken into account only through the detrending using mean hemispheric temperatures. We show that some predictive skill may be obtained by including the solar effect

    Creative Gardens: Towards Digital Commons

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    date-added: 2015-03-04 03:12:21 +0000 date-modified: 2015-04-01 06:49:53 +0000date-added: 2015-03-04 03:12:21 +0000 date-modified: 2015-04-01 06:49:53 +0000This work was supported by the Arts and Humanities Research Council, CreativeWorks London Hub, grant AH/J005142/1, and the European Regional Development Fund, London Creative and Digital Fusion

    Monitoring solar-type stars

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    Old UBV and recent uvby photometry of solar-type dwarfs and other standard stars yield an upper limit of variability (determined by observational errors) of about 0.004 mag rms. A factor two improvement in this upper limit is achievable

    Wavelet analysis of the seismograms of the 2004 Sumatra-Andaman earthquake and its application to tsunami early warning

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    We applied the wavelet transform in an attempt to detect long-period components early in a seismogram. We analyzed the displacement seismograms of the 26 December 2004 Sumatra-Andaman earthquake (Mw = 9.2) and the 28 March 2005 Nias earthquake (Mw = 8.7). Wavelet analysis is able to clearly distinguish the amplitudes of the long-period W phase between the seismograms of the two earthquakes before the S wave reaches the station. It shows that the 2004 earthquake generates a W phase of significantly greater amplitude. This facility has potential application to the rapid identification of truly great earthquakes with high tsunami potential

    The Right to Know: Disclosure of Information for Collective Bargaining and Joint Consultation

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    The legal obligation on employers to provide information to employees has grown since the early 1970s. At that time, the emphasis was on disclosure for collective bargaining. In the 1980s and 1990s, the emphasis shifted more to disclosure for joint consultation. In the context of new legislation, the possibility of further interventions from Europe, and a greater commitment to openness in other areas of company and public life, disclosure of information for collective bargaining and joint consultation at work is again on the agenda. This article focuses on disclosure for both of these processes. Disclosure for collective bargaining is the most developed and potentially significant area of the law from an industrial relations perspective. Disclosure for joint consultation, however, has been the most dynamic area in recent years. Voluntary information provision by firms has also been a significant part of developing human resource management practice. The paper therefore provides a broad examination of the law on disclosure. The UK provisions are conceptualised as constituting an agenda-driven disclosure model; i.e. the trigger for their use lies within the bargaining agenda. By contrast, the provisions stemming from European initiatives are event-driven; i.e. they are triggered by specific employer initiated events that affect employment contracts in other ways irrespective of the representative context. In the final sections, we attempt a broader evaluation of the intent and impact of the legislation and assess the pros and cons of the different approaches.Disclosure of information, collective bargaining, joint consultation

    Monitoring solar-type stars for luminosity variations

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    Since 1984, researchers have made more than 1500 differential photometric b (471 nm) and y (551 nm) measurements of three dozen solar-like lower main sequence stars whose chromospheric activity was previosly studied by O. C. Wilson. Here, researchers describe their methodology and the statistical tests used to distinguish intrinsic stellar variability from observational and instrument errors. The incidence of detected variability among the program and comparison stars is summarized. Among the 100 plus pairs of stars measured differentially, only a dozen were found that were unusually constant, with peak-to-peak amplitudes of seasonal mean brightness smaller than 0.3 percent (0.003 mag) over a two-to-three-year interval

    Image Interpretation by radiographers in brain, spine and knee MRI examinations: Findings from an accredited postgraduate module

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    Introduction: The aim of the study was to evaluate the performance of radiographers in image interpretation of magnetic resonance imaging (MRI) brain, spine and knee examinations following a nine-month work based postgraduate MRI module. Methods: Twenty-seven participants each submitted 60 image commentaries taken from prospective clinical workloads. The image interpretations (n=1,620) comprised brain, spine, and knee MRI examinations. Prevalence of abnormal examinations approximated 53% (brain), 74% (spine), and 73% (knee), and included acute and chronic pathology, normal variants and incidental findings. Each image interpretation was graded against reference standard consultant radiologist definitive report. Results: The radiographer’s performance on brain image interpretations demonstrated mean accuracy at 86.7% (95% CI 83.4-89.3) with sensitivity and specificity of 84% (95% CI 80.9-86.4) and 89.7% (95% CI 86.2-92.6) respectively. For spinal interpretations the mean accuracy was 86.4% (95% CI 83.4-89.0), sensitivity was 90.2% (95% CI 88.2-92), mean specificity was 75.3% (95% CI 69.4-80.4). The mean results for knee interpretation accuracy were 80.9% (95% CI 77.3-84.1), sensitivity was 83.3% (95% CI 80.8-85.5), with 74.3% specificity (95% CI 67.4-80.4). Conclusions: The radiographer’s demonstrated skills in brain, spine and knee MRI examination image interpretation. These skills are not to replace radiologist reporting but to meet regulating body standards of proficiency, and to assist decision making in communicating unexpected serious findings, and /or extend scan range and sequences. Further research is required to investigate the impact of these skills on adjusting scan protocols or flagging urgent findings in clinical practice

    Academic clickbait: Articles with positively-framed titles, interesting phrasing, and no wordplay get more attention online

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    This article is about whether the factors which drive online sharing of non-scholarly content also apply to academic journal titles. It uses Altmetric scores as a measure of online attention to articles from Frontiers in Psychology published in 2013 and 2014. Article titles with result-oriented positive framing and more interesting phrasing receive higher Altmetric scores, i.e., get more online attention. Article titles with wordplay and longer article titles receive lower Altmetric scores. This suggests that the same factors that affect how widely non-scholarly content is shared extend to academia, which has implications for how academics can make their work more likely to have more impact

    On Lexemic and Morphemic Case

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    Paper by David G. Lockwoo
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