Examining the Effects of Trait Rumination on Hostile Attribution Bias

Previous research supports the idea that individuals high in trait anger tend to experience more hostile attribution bias. According to the Integrative Cognitive Model, cognitive factors, such as rumination, may increase the risk of hostile attribution bias and any subsequent aggressive behaviors. Sex differences are apparent in rumination and anger expression. The present research explored the potential role trait rumination plays in hostile attribution bias as well as potential conditional effects of sex on this relationship. Participants were asked to complete a number of self-report measures and vignettes of ambiguously hostile situations adapted to improve reliability. Hypotheses were largely supported and trait anger rumination was significantly predictive of hostile attribution bias; however, conditional effects of sex were non-significant. The adapted hostile attribution bias measure had improved reliability and may have utility for a survey-based method to assessing hostile attribution bias. Findings may further our understanding of hostile interpretations and potential for subsequent aggressive behaviors in high trait ruminators in ambiguous situations as well as lead to potential areas of intervention to reduce anger and anger rumination

Effect of Speed on Steering Efficiency

Studies have shown that there is a definite tendency for a driver to lose in steering efficiency when he takes one hand off the wheel. Johnson and Lauer (1) found either hand alone to be 91.4 per cent as efficient in manipulative ability as both hands used together. Their findings were confirmed in a lesser degree by Lauer and Suhr (2) for both simple and complex driving. The present study was made to determine whether or not a loss in steering efficiency occurs when driving speed is increased

Pseudo-Riemannian geodesic foliations by circles

We investigate under which assumptions an orientable pseudo-Riemannian geodesic foliations by circles is generated by an $S^1$-action. We construct examples showing that, contrary to the Riemannian case, it is not always true. However, we prove that such an action always exists when the foliation does not contain lightlike leaves, i.e. a pseudo-Riemannian Wadsley's Theorem. As an application, we show that every Lorentzian surface all of whose spacelike/timelike geodesics are closed, is finitely covered by $S^1\times \R$. It follows that every Lorentzian surface contains a non-closed geodesic.Comment: 14 page

Influence of Pure Dephasing on Emission Spectra from Single Photon Sources

We investigate the light-matter interaction of a quantum dot with the electromagnetic field in a lossy microcavity and calculate emission spectra for non-zero detuning and dephasing. It is found that dephasing shifts the intensity of the emission peaks for non-zero detuning. We investigate the characteristics of this intensity shifting effect and offer it as an explanation for the non-vanishing emission peaks at the cavity frequency found in recent experimental work.Comment: Published version, minor change

Sampling Plans for Control-Inspection Schemes Under Independent and Dependent Sampling Designs With Applications to Photovoltaics

The evaluation of produced items at the time of delivery is, in practice, usually amended by at least one inspection at later time points. We extend the methodology of acceptance sampling for variables for arbitrary unknown distributions when additional sampling infor- mation is available to such settings. Based on appropriate approximations of the operating characteristic, we derive new acceptance sampling plans that control the overall operating characteristic. The results cover the case of independent sampling as well as the case of dependent sampling. In particular, we study a modified panel sampling design and the case of spatial batch sampling. The latter is advisable in photovoltaic field monitoring studies, since it allows to detect and analyze local clusters of degraded or damaged modules. Some finite sample properties are examined by a simulation study, focusing on the accuracy of estimation

Risk assessment and mapping of extreme floods in non-dyked communities along the Elbe and Mulde Rivers

International audienceAssessing and mapping damage risk of floods for large river basins is still in its infancy. Damage risk is understood to be the combination of flood hazard and the vulnerability of communities to a flood of a particular return period. Risk is calculated and mapped for two communities in which dykes are not located for flood protection: Meissen on the Elbe River and Döbeln in the Mulde catchment. Different methodologies for the computation of flood depth and inundation extent of varying flood return periods (hazard) are compared. Exposure and relative damage to the flooding (vulnerability) based on land-use coverages of different scale are also compared and discussed. A property asset coverage completes the data requirements for the construction of the risk maps. Recommendations for continued research on risk assessments of large river basins conclude the study

China, the United States, and the European Union

The Paris Agreement would not have come into being had China, the United States (US), and the European Union (EU), which together contribute more than half of all global greenhouse gas emissions, not signaled their intent to take major steps to reduce their domestic emissions. The EU has been at the forefront of global climate change measures for years having issued binding domestic emission reduction targets for 2020 and 2030. For many years, China refused to announce a target date for when it might begin reducing its greenhouse gas emissions, and the US Congress blocked action on climate change. In the lead up to the Paris climate negotiations, however, there were major shifts in China’s and the US’s climate positions. This commentary examines the climate policies of the three largest emitters and the factors motivating the positions they took in the Paris negotiations. Given that the commitments made in Paris are most likely insufficient to keep global temperature from rising 2 °C above pre-industrial levels, the commentary also considers what the likelihood is that these three major economies will strengthen their emission reduction targets in the near future