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Search Results: 1 - 10 of 333405 matches for " Francis Wagner S. Correia "
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Projecting Extreme Changes in Summer Rainfall in South America by the Middle of the 21st Century  [PDF]
Paula Andrea M. Fonseca, José Augusto P. Veiga, Francis Wagner S. Correia, Adriane L. Brito, M?nica R. Queiroz, André A. Lyra, Sin Chan Chou
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.44067

Extreme rainfall events can be considered a natural manifestation of the environment in which they are embedded and foreknowledge about their future behavior is very important, especially for decision makers. In this context, we aimed to explore the future behavior of extreme rainfall intensity through numerical simulations with the ETA model. The model was forced with a scenario of high greenhouse gas emissions for the middle of the 21st Century as described for A1B emission scenario. We detailed the main changes in accumulated rainfall produced by heavy events, very heavy events and rare events over a broad area of South America with a focus on the tropical sector. The methodology applied here is capable of separating extreme events and establishing the quantity of rainfall yielded by them. We have found that in the near future (2041-2050) rare events will tend to increase over the Amazon basin, followed by reductions in heavy and very heavy events. Conversely, heavy, very heavy and rare events are expected to decline over north-east Brazil. Furthermore, increases were found for heavy, very heavy and rare events over southern Brazil.

Calibra??o do "simplified simple biosphere model - SSiB" para áreas de pastagem e floresta na Amaz?nia com dados do LBA
Correia, Francis Wagner Silva;Alvalá, Regina Célia dos Santos;Manzi, Ant?nio Ocimar;Gielow, Ralf;Kubota, Paulo Yoshio;
Acta Amazonica , 2005, DOI: 10.1590/S0044-59672005000200017
Abstract: the parameters of the simplified simple biosphere model - ssib were validated and subsequently calibrated for the fazenda nossa senhora aparecida (62o22'w; 10o45's) pasture site and the reserva biológica do jaru (62o22'w; 10o45's) forest site, both located in the state of rond?nia. micrometeorological and hydrological data collected during the dry period of 2001, as part of the large-scale biosphere-atmosphere experiment in amazonia - lba, were used. the results showed that the model simulated well the net radiation, both at the pasture and at the forest. the latent heat flux was super-estimated in both sites. the model sub-estimated the sensible heat flux at the pasture and at the forest, mainly during the night period; notwithstanding, the values for the forest were nearer to the observed ones. with the calibrated parameters, the model generated better estimations of the latent and the sensible heat fluxes, thus better representing the energy partition both at the forest and at the pasture.
O desenvolvimento do contrato psicológico orientado para desempenhos de elevado rendimento
Correia, Rui,Mainardes, Emerson Wagner
Psico , 2010,
Abstract: O objectivo deste artigo consiste em demonstrar, conceptualmente, a relevancia do contrato psicológico para a performance dos indivíduos nas organiza es. O contrato de trabalho pode ser percepcionado de duas formas: o contrato formal, explicitado sob a forma de um contrato de trabalho escrito, e outra, informal e implícita, o contrato psicológico. Ambos envolvem direitos, obriga es e expectativas por parte do indivíduo e da organiza o. A literatura acentua a relevancia do contrato psicológico transaccional, em detrimento de um contrato psicológico mais relacional, apesar dos contratos psicológicos assumidos pelos indivíduos se situarem, na realidade, num contínuo entre estes dois tipos de contratos. Neste estudo é apresentado um modelo conceptual explicativo do desenvolvimento dinamico do contrato psicológico, orientado para performances de elevado rendimento. S o analisados os contributos do contrato psicológico para o aprofundar de rela es de compromisso, através de um maior envolvimento dos indivíduos no processo de defini o de objectivos, e consequentes impactos ao nível da performance. O modelo prop e o estabelecimento de uma rela o positiva e significante entre: confian a (cumprimento do acordo e justi a percebida), compromisso (objectivos) e performance (elevado rendimento).
Corrections to the Boltzmann mean free path in disordered systems with finite size scatterers
S. Correia
Mathematics , 2001, DOI: 10.1088/0305-4470/34/44/301
Abstract: The mean free path is an essential characteristic length in disordered systems. In microscopic calculations, it is usually approximated by the classical value of the elastic mean free path. It corresponds to the Boltzmann mean free path when only isotropic scattering is considered, but it is different for anisotropic scattering. In this paper, we work out the corrections to the so called Boltzmann mean free path due to multiple scattering effects on finite size scatterers, in the s-wave approximation, ie. when the elastic mean free path is equivalent to the Boltzmann mean free path. The main result is the expression for the mean free path expanded in powers of the perturbative parameter given by the scatterer density.
Hermeneutical Engineering of Requirements  [PDF]
Wagner Varalda, ítalo S. Vega
Journal of Computer and Communications (JCC) , 2017, DOI: 10.4236/jcc.2017.52002
Abstract: The Software Engineering aims to develop, within the deadlines and costs established, quality software and that meets the needs of its users. To be made the definition of what the software should do (to establish its purpose), it included the execution of activity the Requirements Engineering, where the context of software to be developed is identified, examined and specified. All other activities of software development depend primarily on this activity. However, there is a problem increasingly in evidence: understand the context of software to be developed. This article aims to present a proposal to face this problem through the use of specific hermeneutical methods for the Requirements Engineering, which will help the software development team understand the original needs of the business to be attended. The basic idea is to produce a hermeneutic specification acceptable, which will be used for the extraction and the specification of the software requirements to be developed. In essence, the hermeneutics focuses on the true interpretation and understanding in contextualized of what is intended to know. The Hermeneutical Engineering of Requirements comes to be the result of the adequacy of methods hermeneutical to assist, specifically the activity of Engineering of Requirements.
A evolu o demográfica da freguesia do Bonfim da cidade do Porto na época contemporanea
Luís Grosso Correia
Revista da Faculdade de Letras : Historia , 2009,
A junta patriótica do norte : um projecto republicano de rememora o da I Guerra Mundial em Portugal
Sílvia Correia
CEM : Cultura, Espa?o & Memória , 2011,
Abstract: The Junta Patriótica do Norte (JPN) was created a month after Germany’s declaration of war, stating that one of its purposes would be to follow the conflict. However, its efforts were extended and intensified in the postwar period, particularly with respect to assistance to war orphans, the organization of war commemorations, and last but not least, the dissemination and implementation of artistic tributes to the war’s fallen men. This article intends, besides the organic understanding of the institution, to first explore the Junta’s role in the conflict’s mobilization efforts and, second, its role in how the memory – material and immaterial – of World War I in Portugal has be shaped.
Androgen receptor expression predicts breast cancer survival: the role of genetic and epigenetic events
Kate M Peters, Stacey L Edwards, Shalima S Nair, Juliet D French, Peter J Bailey, Kathryn Salkield, Sandra Stein, Sarah Wagner, Glenn D Francis, Susan J Clark, Melissa A Brown
BMC Cancer , 2012, DOI: 10.1186/1471-2407-12-132
Abstract: The levels of Androgen receptor protein in a cohort of breast tumour samples was determined by immunohistochemistry and the results were compared with clinical characteristics, including survival. The role of defects in the regulation of Androgen receptor gene expression were examined by mutation and methylation screening of the 5' end of the gene, reporter assays of the 5' and 3' end of the AR gene, and searching for miRNAs that may regulate AR gene expression.AR was expressed in 56% of tumours and expression was significantly inversely associated with 10-year survival (P = 0.004). An investigation into the mechanisms responsible for the loss of AR expression revealed that hypermethylation of the AR promoter is associated with loss of AR expression in breast cancer cells but not in primary breast tumours. In AR negative breast tumours, mutation screening identified the same mutation (T105A) in the 5'UTR of two AR negative breast cancer patients but not reported in the normal human population. Reporter assay analysis of this mutation however found no evidence for a negative impact on AR 5'UTR activity. The role of miR-124 in regulating AR expression was also investigated, however no evidence for this was found.This study highlights the potential for AR expression to be an informative biomarker for breast cancer survival and sets the scene for a more comprehensive investigation of the molecular basis of this phenomenon.Breast cancer is a heterogeneous disease comprising tumour subtypes associated with variable clinical characteristics [1]. Variables including tumour size, histological subtype and grade, lymph node status and the expression of estrogen receptor alpha (ERα), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) currently assist routine clinical management [2]. However, these factors are limited in their ability to predict individual survival and response to therapy [2]. This is particularly apparent for patients with advanced b
A gest o estratégica de institui es de ensino superior: um estudo multicaso
Emerson Wagner Mainardes,Cristina Schmitt Miranda,Carlos Henrique Correia
Contextus , 2011,
Abstract: A expans o do ensino superior desencadeada no final dos anos 90 gerou um grande número de IES de pequeno porte. Mesmo sendo organiza es complexas, a gest o estratégica de IES de pequeno porte apresenta algumas características similares à gest o de Micro, Pequenas e Médias empresas, em especial a importancia dada à Vis o como determinante da estratégia. Este estudo objetivou identificar como é realizada a gest o estratégica em institui es particulares de ensino superior de pequeno e médio porte em Santa Catarina, comparando-a com a gest o estratégica em micro, pequenas e médias empresas (MPME), no intuito de se encontrar similaridades e divergências. Por meio de um estudo multicaso, com a aplica o de entrevistas pessoais a três gestores de IES de pequeno porte, identificou-se características e comportamentos semelhantes entre si na gest o estratégica das institui es pesquisadas, bem como similares àqueles próprios da gest o estratégica de MPME. Embora as IES sejam consideradas organiza es complexas, muitas características próprias na gest o estratégica em MPME s o perfeitamente aplicáveis às institui es privadas de pequeno porte.
International Recommendations on Calculation of Absorbed Dose in Biota: A Comprehensive Revue  [PDF]
Wagner de S. Pereira, Alphonse Kelecom
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.59077

Since the early times, radioprotection has been focused on the human being. Currently this approach has changed, being now also necessary to take care of the protection of the environment from unwanted effects of ionizing radiation. To this end, several institutions (UNSCEAR, ICRP, IAEA, DOE, ACRP) and consortia of institutions (FASSET, ERICA) have established procedures in order to protect the biota of such effects. Developed procedures are based on the calculation of the absorbed dose in biota (ICRP, DOE, IAEA), or on environmental risk assessment―ERA (DOE, ACRP, FASSET, ERICA); but even in this latter approach the parameters used are related to the absorbed doses in biota. The calculation of dose is the standard procedure in human radioprotection, and this points such an approach as the most interesting for providing a convergence between human and nonhuman (= biota) radioprotections. On the other hand, the ERA approach is easier to apply, because this methodology is used in several countries for non-radioactive contamination assessments. Since the world radioprotection system follows a number of institutions (UNSCEAR, ICRP, IAEA and regulatory institutions of member countries) that use dose calculation, this appears to be the way for biota radioprotection. We here review and comment the evolution of the concepts and approaches of the recommendations for radioprotection of non-human biota.

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