1,132 research outputs found
The dependence of precipitation and its footprint on atmospheric temperature in idealized extratropical cyclones
Flood hazard is a function of the magnitude and spatial pattern of precipitation accumulation. The sensitivity of precipitation to atmospheric temperature is investigated for idealized extratropical cyclones, enabling us to examine the footprint of extreme precipitation (surface area where accumulated precipitation exceeds high thresholds) and the accumulation in different-sized catchment areas. The mean precipitation increases with temperature, with the mean increase at 5.40%/âC. The 99.9th percentile of accumulated precipitation increases at 12.7%/âC for 1 h and 9.38%/âC for 24 h, both greater than Clausius-Clapeyron scaling. The footprint of extreme precipitation grows considerably with temperature, with the relative increase generally greater for longer durations. The sensitivity of the footprint of extreme precipitation is generally super Clausius-Clapeyron. The surface area of all precipitation shrinks with increasing temperature. Greater relative changes in the number of catchment areas exceeding extreme total precipitation are found when the domain is divided into larger rather than smaller catchment areas. This indicates that fluvial flooding may increase faster than pluvial flooding from extratropical cyclones in a warming world. When the catchment areas are ranked in order of total precipitation, the 99.9th percentile is found to increase slightly above Clausius-Clapeyron expectations for all of the catchment sizes, from 9 km2 to 22,500 km2. This is surprising for larger catchment areas given the change in mean precipitation. We propose that this is due to spatially concentrated changes in extreme precipitation in the occluded fron
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The Generalizability and Reliability of Scores on the Rosenberg Self-Esteem Scale Over Forty-Eight Years
The objective of this study is to test the reliability of scores on the Rosenberg Self-Esteem scale (RSES; Rosenberg, 1965) from 1971 to 2019. Self-esteem is how highly one thinks of themselves and how much worth they feel they possess. The RSES is not the only measure of global self-esteem, but it is the most widely used (Whiteside-Mansell & Corwyn, 2003). In the late 1980âs and 1990âs, the self-esteem movement was enacted in the United States as an effort to improve the lives of adults and children, which may have changed the way self-esteem is interpreted (Humphrey, 2004). For example, items on the RSES may now be measuring narcissism or self-efficacy more so than self-esteem. Thirteen existing item-level datasets that used the RSES were obtained. Sample sizes varied, but all samples contained young adults in the United States between the ages of 15 and 26. Two Classical Test Theory (CTT; Meyer, 2010) coefficients were used, Cronbachâs α and Guttmanâs λ_2. to test the reliability of scores on the RSES by finding the ratio of true score variance to observed score variance. Generalizability Theory (G-Theory; Shavelson & Webb, 1991) components, specifically G-studies and D-studies, were then used to identify the sources of variance present in scores on the RSES (i.e., variance from persons, variance from items, and remaining unexplained and error variance). The CTT coefficients and G-theory methods indicated scores on the RSES were reliable and, if anything, have increased slightly in reliability over the last 48 years. Despite the reliability of the scores on the RSES, the validity of the scores are still in question. It is important to periodically test the reliability of scores on widely used measures like the RSES to determine the extent to which they can be used for various forms of decision-making (Meyer, 2010) and for various research aims
Constructing and maintaining houses
This resource sheet is about the construction and maintenance of Indigenous housing. It does not cover broader questions such as the total amount of housing required or the best housing management systems, although it touches on these issues. It describes the best approaches to the constructionwas slightly better in Non-remote areas, the issue is not just one of remotenessâeven in Non-remote areas the percentage of houses requiring major repair or replacement was 28% (see Figure 1)
Is There Monopsony in the Labor Market? Evidence from a Natural Experiment
A variety of recent theoretical and empirical advances have renewed interest in monopsonistic models of the labor market. However, there is little direct empirical support for these models, even in labor markets that are textbook examples of monopsony. We use an exogenous change in wages at Veterans Affairs hospitals as a natural experiment to investigate the extent of monopsony in the nurse labor market. In contrast to much of the prior literature, we estimate that labor supply to individual hospitals is quite inelastic, with short-run elasticity around 0.1. We also find that non-VA hospitals responded to the VA wage change by changing their own wages.
A capability model for passive spheres at high altitudes
Error model for falling sphere measurements on atmospheric densit
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Planning for sustainable change: a review of Australian local planning schemes
Sustainable development, defined by the World Commission on Environment and Development as development that meets the needs of the present without compromising the ability of future generations to meet their own needsâ, has become a global policy objective with particular resonance for planners (WCED, 1987: p. 43). Many international, national, state and regional policy frameworks emphasise the need to improve the environmental performance of cities and regions and to conserve and renew biodiversity. The increasing prospect of global climatic volatility â hotter temperatures, sea level rise, intense storm events, flooding and bushfires, have added a new urgency for planning and design regulations that build community resilience to withstand impacts of climate change (Hennessy et al., 2007)
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