3,312 research outputs found
Key features of a succesful invasive macroalgae: the case of asparagopsis taxiformis in Alboran Sea
Asparagopsis taxiformis (Bonnemaisoniales, Rhodophyta) is considered one of the most invasive seaweeds in the Mediterranean, and is included in the spanish checklist of invasive species. Recorded for first time in Southern Spain nearly twenty years ago, we are now ready to highlight its key features to have become a successful invader in Alboran Sea.
Genetic studies showed that only one lineage of this species complex, is invasive in Alboran Sea, the lineage 2, which exhibits a wide physiological plasticity, exhibited in a wide thermal adaptation of performances of photosynthetic parameters like Pmax and α. Furthermore, the species is able to inhabit from shallow subtidal up to depths over -30m, due to its low Ic.
The species exhibits a trigenetic life-cycle, with an invasive gametophyte dominating the host community, and a free-living tetrasporophyte (Falkenbergia phase) being the dispersal one. The gametophyte is present all the year round, and exhibits a high recruitment and vegetative growth capacity, which support more than 90% of the community biomass. Furthermore, sexual reproduction was perfomed during the whole year, except in winter months, accounting in summer months with more than 50% of the population with reproductive structures. Minimum size for reproduction was low (4-6 cm), considering the maximal size observed for the species in the study site (30 cm). Statistical anaylisis has shown no relationship of reproduction with environmental factors, such as nutrients or temperatura.
These features, together with some other more, become A. taxiformis in an invasive species already well settled in Alboran Sea.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
Modelling credit risk : evidence for EMV methodology on portuguese mortgage data
Traditional credit risk models failed during the recent financial crisis and revealed weaknesses in forecasting and stress testing procedures. One of the main reasons for this failure was the fact that they did not include lifecycle and macroeconomic adverse selection effects. The Exogenous-Maturity-Vintage (EMV) models emerged in this context, in the credit risk literature. In this article, we assess the applicability of the EMV models to a dataset consisting of Portuguese mortgage data between 2007 and 2017, to study the determinants of default rates. We obtain and examine the exogenous, maturity and vintage curves from the dataset under analysis, plotting defaults rates through time, under each of the three component’s logic (default rates by calendar period, by age and by vintage). We show that these curves follow the expected behavior. Finally, we identify a set of explanatory variables suitable to be incorporated in an EMV model specification, for forecasting purposes, and discuss the rationality for their inclusion in the model.info:eu-repo/semantics/publishedVersio
Notas sobre especies del género "Cladonia" de Bosnia-Herzegovina y Croacia
Field studies in the south of Bosnia-Herzegovina and Croatia have revealed six lichen species new to Bosnia-Herzegovina: Cladonia cervicornis, C. conista, C. phyllophora, C. pulvinella, C. subcariosa and C. subrangiformis. Two species are new to Croatia: C. cryptochlorophaea and C. humilis.Se aportan seis novedades para Bosnia y Herzegovina: Cladonia cervicornis, C. conista, C. phyllophora, C. pulvinella, C. subcariosa y C. subrangiformis y dos nuevas especies para Croacia: C. cryptochlorophaea y C. humili
Professionals' perception about the guidebook Violence against the elderly in the family context
Prevention and intervention in domestic violence against the elderly requires a multidisciplinary and concerted approach of the interinstitutional network of ali the professionals and organizations involved. Starting from the reality of the organization of the intervention services of the district of Bragança it was developed and distributed in the network services a guidebook entitled "Violence against the elderly in the family context: support guide for professionals in the identification and signaling". This communication aims to: (i) understand the impact ofthis resource for the development of professional skills m the protection of the elderly; (li) strengthen the interinstitutional network for the prevention of domestic violence against the elderly. To accomplish these goals a quantitative and cross-sectional study was conducted on a representativé survey of professionals and formal caregivers of the district of Bragança. This pioneering study, carried out in the northem and interior region of Portugal, reinforces the importance of an integrated perspective that considers the local idiosyncrasies for the affirmation of the rights of older people, as well as for the qualification of ali those involved in the promotion ofadequate care for the elderly.info:eu-repo/semantics/publishedVersio
Pictures of paternal involvement with preschool-aged children in the city of Bragança
Com o estudo descrito neste artigo visa-se caraterizar o envolvimento paterno com crianças em idade pré-escolar na cidade de Bragança, analisando especificamente os domínios referentes aos cuidados, às atividades lúdicas e à disciplina. Partindo do modelo multidimensional proposto por Lamb, Pleck, Charnov e Levine (1987) e da revisão da literatura existente na área, neste estudo exploratório de cariz quantitativo, utilizou-se como instrumento de recolha de informação uma versão adaptada da Escala de Envolvimento Paterno (Simões, Leal & Maroco 2010a) junto a uma amostra de 435 pais, com idades compreendidas entre os 20 e 62 anos. Os resultados apontam para um maior envolvimento do pai em atividades lúdicas e menor ao nível da disciplina. Foi igualmente evidente que os pais não se diferenciam no envolvimento em função do estado civil e da situação profissional, mas diferem em função da escolaridade, da idade do pai e do número de filhos numa análise intra-itens. A idade e o género da criança não influenciam o envolvimento paterno nos domínios considerados.Despite the growing interest in father involvement little is known on national research. The study
described in this article aims to characterize parental involvement with preschool-aged children
in the city of Bragança, in the areas relating to care, recreational activities and discipline. Based
on a multidimensional model proposed by Lamb, Pleck, Charnov and Levine (1987) and on the
literature review in the field, it was developed a quantitative study with an adapted version of the
Parental Involvement Scale (Simões, Leal & Maroco 2010a) as a core technique in data collection
with a sample of 435 parents, aged between 20 and 62 years. Results demonstrate that fathers
are more involved in recreational activities and less involved at the level of discipline. Parents
don´t differ in involvement on the basis of marital and employment status, but differ depending on
the father´s education and age and also on the number of children in an intra-item analysis. The
age and gender of the child differentiate father´s involvement in the fields investigatedinfo:eu-repo/semantics/publishedVersio
O idoso e a teleassistência: novos desafios para a cooperação intersectorial
O desenvolvimento tecnológico tem potenciado alterações significativas no paradigma de cuidados ao idoso, para além das suas formas tradicionais (Paúl, 2005; Turner & McGee-Lennon, 2013). Visando uma maior compreensão da realidade da teleassistência desenvolveu-se o presente estudo tendo como objetivos: conhecer o perfil sociodemográfico do idoso que usufrui da teleassistência, numa empresa privada no distrito de Bragança, e incentivar reflexões para a cooperação intersetorial. Trata-se assim de um estudo exploratório, de carácter quantitativo, tendo como instrumento de recolha de dados um questionário fechado. Este engloba uma parte alusiva à caracterização sociodemográfica dos elementos da amostra e uma segunda constituída por 18 items referentes à teleassistência distribuídos por três dimensões (adesão e decisão, perceção de benefícios e utilização do aparelho de teleassistência). Em relação aos 87 idosos inquiridos constata-se um utilizador maioritariamente do género feminino, com idade elevada, em arranjo domiciliário unipessoal. Independentemente do género e da avaliação da perceção do estado de saúde, ser viúvo influencia a tomada de decisão quanto ao uso da teleassistência. Cabe repensar os desafios no âmbito da cooperação intersectorial
Industrial network membership: Reducing psychic distance hazards in the internationalization of the firm
The network approach to internationalization of the firms has warranted the research focus of many international business scholars. Firms are increasingly involved in international business endeavors and arguably need to learn to adapt to idiosyncratic milieus they encounter in the foreign markets. This paper proposes a conceptual model suggesting that integration in networks strengthens corporate competitiveness in international markets. Network membership provides access to knowledge that facilitates adaptation to the various dimensions - economic, political, legal, cultural ? of the international business environments. Membership in social and business networks are likely to ease internationalization by reducing firms? perceived psychic distance.Networks, internationalization theories, psychic distance
Jean Piaget
O Poster apresenta a biografia de Jean Piaget, os fundamentos teóricos e práticos da sua obra pedagógica, a atualidade da sua pedagogia e respetivas implicações na educação.info:eu-repo/semantics/publishedVersio
The telecare and the elderly: new challenges for intersectoral cooperation
Este estudo pretende identificar o perfil sociodemográfico do idoso que usufrui da
teleassistência; conhecer a decisão, os benefícios e o uso da teleassistência pelo idoso e
incentivar reflexões para a cooperação intersectorial. A partir de uma amostra de conveniência,
constituída por 87 idosos, foi utilizado um questionário fechado composto por uma
caracterização sociodemográfica, perceção do estado de saúde e, itens referentes à adesão,
decisão, perceção de benefícios e utilização da teleassistência. Os resultados evidenciam um
utilizador maioritariamente feminino, em arranjo domiciliário unipessoal, com idade elevada,
escolaridade de quatro ou mais anos e uma perceção maioritariamente razoável do estado de
saúde. A teleassistência é percebida pelo idoso como fonte de segurança/tranquilidade, tendo-se
constatado que ser viúvo influencia a decisão sobre o uso e que o nível de escolaridade
influencia a verificação do funcionamento do aparelho
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