Browsing by Issue Date, starting with "2013-02-07"
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- O relato ambiental nas empresas do PSI-20Publication . Carreira, Francisco José Alegria; Damião, Ana Sofia BarradasDuring the past few decades, the concepts of sustainable development and Corporate Social Responsibility (CSR) have appeared as a challenge that companies must face, because they place “the environment (…) at the same level of strictly economic results” (Mendes, 2007:iv). CSR entrepreneurial policies and reporting are mostly voluntary compromises made by business organizations, especially when they concern the natural environment. On a global scale, no mandatory international accounting standard, exclusively concerning the financial accounting and reporting procedures on environmental matters, has yet been issued. This study seeks to analyze some of the factors that may be significantly related to environmental disclosure practices on behalf of the Portuguese companies listed in the PSI-20 Index. Portuguese and international literature has summarized these factors to a set of corporate features which may be associated with environmental disclosures in the companies’ annual reports and accounts. Following these studies, we identified: size and leverage.
- Search for exotic resonances decaying into $WZ/ZZ$ in $pp$ collisions at $\sqrt{s}=7$ TeVPublication . CMS collaboration (2206 authors); Hollar, Jonathan; Nayak, Aruna; Almeida, Nuno; Bargassa, Pedrame; David Tinoco Mendes, Andre; Faccioli, Pietro; Ferreira Parracho, Pedro Guilherme; Gallinaro, Michele; Seixas, Joao; Varela, Joao; Vischia, Pietro; Lloret Iglesias, Lara; Musella, Pasquale; Rodrigues Antunes, Joao; Silva, Pedro; Pela, Joao; Leonardo, NunoA search for new exotic particles decaying to the VZ final state is performed, where V is either a W or a Z boson decaying into two overlapping jets and the Z decays into a pair of electrons, muons or neutrinos. The analysis uses a data sample of pp collisions corresponding to an integrated luminosity of 5 fb(−1) collected by the CMS experiment at the LHC at TeV in 2011. No significant excess is observed in the mass distribution of the VZ candidates compared with the background expectation from standard model processes. Model-dependent upper limits at the 95% confidence level are set on the product of the cross section times the branching fraction of hypothetical particles decaying to the VZ final state as a function of mass. Sequential standard model W(′) bosons with masses between 700 and 940 GeV are excluded. In the Randall-Sundrum model for graviton resonances with a coupling parameter of 0.05, masses between 750 and 880 GeV are also excluded.