University of Trás-os-Montes and Alto Douro

About: University of Trás-os-Montes and Alto Douro is a education organization based out in Vila Real, Portugal. It is known for research contribution in the topics: Population & Context (language use). The organization has 2858 authors who have published 7146 publications receiving 138394 citations. The organization is also known as: University of Tras-os-Montes and Alto Douro & UTAD.

The concurrence of atmospheric rivers and explosive cyclogenesis in the North Atlantic and North Pacific basins

Abstract: . The explosive cyclogenesis of extratropical cyclones and the occurrence of atmospheric rivers are characteristic features of a baroclinic atmosphere, and are both closely related to extreme hydrometeorological events in the mid-latitudes, particularly on coastal areas on the western side of the continents. The potential role of atmospheric rivers in the explosive cyclone deepening has been previously analysed for selected case studies, but a general assessment from the climatological perspective is still missing. Using ERA-Interim reanalysis data for 1979–2011, we analyse the concurrence of atmospheric rivers and explosive cyclogenesis over the North Atlantic and North Pacific basins for the extended winter months (ONDJFM). Atmospheric rivers are identified for almost 80 % of explosive deepening cyclones. For non-explosive cyclones, atmospheric rivers are found only in roughly 40 % of the cases. The analysis of the time evolution of the high values of water vapour flux associated with the atmospheric river during the cyclone development phase leads us to hypothesize that the identified relationship is the fingerprint of a mechanism that raises the odds of an explosive cyclogenesis occurrence and not merely a statistical relationship. These new insights on the relationship between explosive cyclones and atmospheric rivers may be helpful to a better understanding of the associated high-impact weather events.

Global financial crisis and corporate social responsibility disclosure

Abstract: Purpose This paper investigates the effect of the global financial crisis (GFC) on the level of corporate social responsibility disclosures (CSRD) in the annual report and/or CSR report of 36 major listed Portuguese companies in each of the years 2005, 2008 and 2011. Design/methodology/approach The analysis is framed principally by stakeholder theory. Data were explored using thematic content analysis and an index of disclosure calculated by year, industry type (consumer proximity versus environment sensitivity) and category of information. Findings Before the GFC, Portuguese listed companies increased their CSRD practices significantly. During the crisis, there was a slight decrease in CSRD. However, this was not as pronounced, as it would otherwise have been because it was counteracted by increased disclosures of company interactions with society, particularly in matters of corruption prevention and community engagement. CSRD was higher for companies with high consumer proximity but did not appear to be influenced by companies’ level of environmental sensitivity. Originality/value The results reveal a strong concern by companies for stakeholder management (particularly in respect of community relations) in a period of financial crisis. This study highlights the effect of a company’s proximity to consumers on levels of CSRD.

Does an in-Season 6-Week Combined Sprint and Jump Training Program Improve Strength-Speed Abilities and Kicking Performance in Young Soccer Players?

Abstract: The aim of this study was to examine the effect of a six-week combined jump and sprint training program on strength-speed abilities in a large sample of youth competitive soccer players. It was hypothesized that the experimental training group would enhance their jumping and sprinting abilities. Enhancement of kicking performance was also hypothesized due to an expected increase in explosive strength established by a plyometric and sprinting regimen. Fifty-two young male soccer players playing at the national level (aged 13.4 ± 1.4 years, body mass 53.4 ± 11.7 kg, body height 1.66 ± 0.11 m) took part in the study. Half of the group underwent the plyometric and sprint training program in addition to their normal soccer training, while the other half was involved in soccer training only. The plyometric training group enhanced their running (+1.7 and +3.2%) and jumping performance (+7.7%) significantly over the short period of time, while the control group did not. Furthermore, both groups increased their kicking velocity after just six weeks of training (+3.3 vs. 6.6%). The findings suggest that a short in-season 6-week sprint and jump training regimen can significantly improve explosive strength in soccer-specific skills and that these improvements can be transferred to soccer kicking performance in terms of ball speed.