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An analysis of equity markets cointegration in the european sovereign debt crisis

A simplified presentation of an empirical finding in the portfolio diversification literature is that diversifying across countries is more effective in reducing risks than diversifying across industries. While the linear approach is not designed to capture a significant integration, this is not the case when Gregory and Hansen cointegration tests are used to assess this relation by allowing for instability in thes...

Influence of seismic activity on the atmospheric electric field in Lisbon (Port...

In the present study, we considered the influence of seismic activity on the atmospheric electric field recorded at Portela meteorological station (Lisbon, Portugal) for the period from 1955 to 1991. To this end, an exploratory method was developed, which involved the selection of events for which the distance from the atmospheric electrical field sensor to the earthquake epicenter is smaller than the preparati...

Modelling of Symptoms in Patients with Pollinosis in the Alto Alentejo Region

The syrnptorns of pollen allergy by patients with pollinosis are the target of this study. Patients are frorn the region of Évora, and clinical data were collected at the Hospital of the Holy Spirit in Évora. The data collected is related to the years 2001-2007 for the rnonths of March to June. The syrnptorns exhibited by patients, whose condition was deterrnined by allergological test, were daily recorded over...

Pollen Modelling in Patients with Atopic Respiratory Symptoms in the Alentejo R...

The syrnptorns of pollen allergy by patients with pollinosis are the target of this study. Patients are frorn the region of Évora, and clinical data were collected at the Hospital of the Holy Spirit in Évora. The data collected is related to the years 2001-2007 for the rnonths of March to June. The syrnptorns exhibited by patients, whose condition was deterrnined by allergological test, were daily recorded over...

Assessing wildfire occurrence probability in Pinus pinaster Ait. stands in Port...

Maritime pine (Pinus pinaster Ait.) is an important conifer from the western Mediterranean Basin extending over 22% of the forest area in Portugal. In the last three decades nearly 4% of Maritime pine area has been burned by wildfires. Yet no wildfire occurrence probability models are available and forest and fire management planning activities are thus carried out mostly independently of each other. This paper...

Inferência robusta e heterocedástica em componentes de variância, parâmetros e ...

Os objetivos neste estudo foram avaliar um modelo animal multirracial (MAMR) heterocedástico para estimar a heterogeneidade de variância residual devida à raça, à heterozigosidade, ao sexo e ao grupo de contemporâneos (GC) e a robustez a dados extremos. Foram avaliadas diferenças nas estimativas de componentes de variância, herdabilidades e valores genéticos. Foram utilizados 4.016 registros de ganho de peso pó...

Rendimento, composição química e atividade antilisterial de óleos essenciais de...

Objetivou-se determinar o rendimento, a composição química e avaliar a atividade antilisterial dos óleos essenciais de Cymbopogon citratus (DC.) Stapf. (capim-limão) e Cymbopogon nardus (L.) Rendle (capim-citronela), puros e em combinação. A obtenção dos óleos essenciais foi realizada a partir de folhas frescas, empregando-se a técnica de hidrodestilação e utilizando-se aparelho de Clevenger modificado. Os rend...

Sporotrichosis caused by sporothrix mexicana, Portugal

Sporotrichosis is a subcutaneous fungal infection present worldwide that is caused by traumatic inoculation or inhalation of spores of the dimorphic fungus Sporothrix schenckii complex (1-3). However, molecular studies have shown that the S. schenckii complex constitutes several cryptic infectious species (i.e., S. albicans, S. brasiliensis, S. globosa, S. luriei, S. mexicana, and S. schenckii). Marimon et al. ...

Asymptotic linearity and limit distributions, approximations.

Linear and quadratic forms as well as other low degree polynomials play an important role in statistical inference. Asymptotic results and limit distributions are obtained for a class of statistics depending on m þ X, with X any random vector and m non-random vector with JmJ-þ1. This class contain the polynomials in m þ X. An application to the case of normal X is presented. This application includes a new cent...

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