1,048 research outputs found

    Individual Country Technical Notes for: Trends in the Rentier Income Share in OECD Countries, 1960-2000

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    This paper presents individual country notes for the paper "Trends in Rentier Shares in OECD Countries, 1966-2000 (Power, Epstein and Abrena, 2003). Meant for the specialist, these notes explain data sources and methods for each country in our sample.

    Brillouin Cooling

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    We analyze how to exploit Brillouin scattering for the purpose of cooling opto-mechanical devices and present a quantum-mechanical theory for Brillouin cooling. Our analysis shows that significant cooling ratios can be obtained with standard experimental parameters. A further improvement of cooling efficiency is possible by increasing the dissipation of the optical anti-Stokes resonance.Comment: 4 pages 3 figure

    Examining the benefit of graduated compression stockings in the prevention of hospital-associated venous thromboembolism in low-risk surgical patients: a multicentre cluster randomised controlled trial (PETS trial)

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    Introduction Hospital-acquired thrombosis (HAT) is defined as any venous thromboembolism (VTE)-related event during a hospital admission or occurring up to 90 days post discharge, and is associated with significant morbidity, mortality and healthcare-associated costs. Although surgery is an established risk factor for VTE, operations with a short hospital stay (<48 hours) and that permit early ambulation are associated with a low risk of VTE. Many patients undergoing short-stay surgical procedures and who are at low risk of VTE are treated with graduated compression stockings (GCS). However, evidence for the use of GCS in VTE prevention for this cohort is poor. Methods and analysis A multicentre, cluster randomised controlled trial which aims to determine whether GCS are superior in comparison to no GCS in the prevention of VTE for surgical patients undergoing short-stay procedures assessed to be at low risk of VTE. A total of 50 sites (21 472 participants) will be randomised to either intervention (GCS) or control (no GCS). Adult participants (18–59 years) who undergo short-stay surgical procedures and are assessed as low risk of VTE will be included in the study. Participants will provide consent to be contacted for follow-up at 7-days and 90-days postsurgical procedure. The primary outcome is the rate of symptomatic VTE, that is, deep vein thrombosis or pulmonary embolism during admission or within 90 days. Secondary outcomes include healthcare costs and changes in quality of life. The main analysis will be according to the intention-to- treat principle and will compare the rates of VTE at 90 days, measured at an individual level, using hierarchical (multilevel) logistic regression.National Institute for Health Research (NIHR) NIHR13377

    Polymerizing the fibre between bacteria and host cells: the biogenesis of functional amyloid fibres

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    Amyloid fibres are proteinaceous aggregates associated with several human diseases, including Alzheimer's, Huntington's and Creutzfeldt Jakob's. Disease-associated amyloid formation is the result of proteins that misfold and aggregate into β sheet-rich fibre polymers. Cellular toxicity is readily associated with amyloidogenesis, although the molecular mechanism of toxicity remains unknown. Recently, a new class of ‘functional’ amyloid fibres was discovered that demonstrates that amyloids can be utilized as a productive part of cellular biology. These functional amyloids will provide unique insights into how amyloid formation can be controlled and made less cytotoxic. Bacteria produce some of the best-characterized functional amyloids, including a surface amyloid fibre called curli. Assembled by enteric bacteria, curli fibres mediate attachment to surfaces and host tissues. Some bacterial amyloids, like harpins and microcinE492, have exploited amyloid toxicity in a directed and functional manner. Here, we review and discuss the functional amyloids assembled by bacteria. Special emphasis will be paid to the biology of functional amyloid synthesis and the connections between bacterial physiology and pathology.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75549/1/j.1462-5822.2008.01148.x.pd

    Characteristics of emotional disturbance of female and male students in elementary, middle, and high school

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    Provide data on the five characteristics of emotional disturbance (ED). For 503 students with ED and 2016 without disabilities, teachers rated the characteristics (Inability to Learn; Relationship Problems; Inappropriate Behavior; Unhappiness or Depression; Physical Symptoms or Fears), plus Socially Maladjusted. We applied a 2 (ED, without disabilities) × 2 (female, male) × 3 (elementary, middle, high school) covariance analysis, with follow‐up comparisons. Students with ED showed greater problems than students without disabilities on all five characteristics, and Socially Maladjusted. On Inability to Learn, among students with ED genders did not differ at elementary but males had greater problems at middle school. On Inappropriate Behavior and Physical Symptoms or Fears, students with ED varied across school levels but students without disabilities did not. All five characteristics discriminated students with ED from those without disabilities. Differences between genders and school levels varied across characteristics

    Factor Analysis of the Preschool Behavioral and Emotional Rating Scale for Children in Head Start Programs

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    Strength-based assessment of behaviors in preschool children provides evidence of emotional and behavioral skills in children, rather than focusing primarily on weaknesses identified by deficit-based assessments. The Preschool Behavioral and Emotional Rating Scales (PreBERS) is a normative assessment of emotional and behavioral strengths in preschool children. The PreBERS has well-established reliability and validity for typically developing children as well as children with identified special education needs, but this has not yet been established for children in Head Start programs, who tend to be at high risk for development of emotional and behavioral concerns. This study explores the factorial validity of the PreBERS scores for a large sample of children participating in Head Start programs around the United States. Results not only confirm the fit of the four-factor model of the PreBERS for this population, but also demonstrate the application of a bifactor model to the structure of the PreBERS which, in turn, allows for the computation of model-based reliability estimates for the four subscales (Emotional Regulation, School Readiness, Social Confidence, Family Involvement) and overall strength index score. The implications suggest that the PreBERS items are reliable scores that can be used to identify behavioral strengths in preschool children in Head Start, and support planning of interventions to selectively address component skills to promote child social and academic success

    On the Effective Communication of the Results of Empirical Studies, Part II

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    In an important and certainly timely article published in the N.Y. U. Law Review, Nancy C. Staudt demonstrates that, in taxpayer standing cases, judges are motivated by politics but can be constrained when the law is clear and oversight exists. As part of that demonstration, Professor Staudt offers an empirical analysis of the decision to grant standing to federal taxpayers-the results of which we reproduce in Table 1.2 What are we to make of this rather ominous-looking table? Professor Staudt suggests two key takeaways. First, the analysis, she reports, shows that doctrine helps explain standing decisions even when political factors are taken into account. Both legal variables ( Spending and Spending and Establishment Clause ) are statistically significant, controlling for all other factors listed in the table. Second, she finds an important role for the politics of the plaintiff: Judges are more likely to grant standing to a liberal plaintiff, regardless of their own political leanings. No doubt, the data support Professor Staudt\u27s claim about the importance of politics. The asterisk on the Plaintiff Politics variable, for example, tells us that a statistically significant relationship exists between a plaintiffs political ideology and the decision to grant standing

    Factor Analysis of the Preschool Behavioral and Emotional Rating Scale for Children in Head Start Programs

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    Strength-based assessment of behaviors in preschool children provides evidence of emotional and behavioral skills in children, rather than focusing primarily on weaknesses identified by deficit-based assessments. The Preschool Behavioral and Emotional Rating Scales (PreBERS) is a normative assessment of emotional and behavioral strengths in preschool children. The PreBERS has well-established reliability and validity for typically developing children as well as children with identified special education needs, but this has not yet been established for children in Head Start programs, who tend to be at high risk for development of emotional and behavioral concerns. This study explores the factorial validity of the PreBERS scores for a large sample of children participating in Head Start programs around the United States. Results not only confirm the fit of the four-factor model of the PreBERS for this population, but also demonstrate the application of a bifactor model to the structure of the PreBERS which, in turn, allows for the computation of model-based reliability estimates for the four subscales (Emotional Regulation, School Readiness, Social Confidence, Family Involvement) and overall strength index score. The implications suggest that the PreBERS items are reliable scores that can be used to identify behavioral strengths in preschool children in Head Start, and support planning of interventions to selectively address component skills to promote child social and academic success
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