Escritório de Gerenciamento de Projetos e Serviços de TI

Este estudo descreve a proposta de criação do Escritório deGerenciamento de Projetos e Serviços (EGPS), uma unidade organizacionalresponsável pela coordenação dos projetos e serviços de TI sob seu controle.Com base nas técnicas de Gerenciamento de Projetos sugeridas no guiaPMBOK, nos processos e melhores práticas de Gerenciamento de Serviçosdefinidos no modelo ITIL e na abordagem do Escritório de Gerenciamento deProjetos (EGP), o EGPS de TI tem como objetivo fornecer um controlecompleto, integrado e abrangente aos produtos desenvolvidos e suportadospela área de TI, a fim de aperfeiçoar os processos, aumentar a produtividadee obter melhores resultados nos negócios através da TI

Escritório de Gerenciamento de Projetos e Serviços de TI

Este estudo descreve a proposta de criação do Escritório deGerenciamento de Projetos e Serviços (EGPS), uma unidade organizacionalresponsável pela coordenação dos projetos e serviços de TI sob seu controle.Com base nas técnicas de Gerenciamento de Projetos sugeridas no guiaPMBOK, nos processos e melhores práticas de Gerenciamento de Serviçosdefinidos no modelo ITIL e na abordagem do Escritório de Gerenciamento deProjetos (EGP), o EGPS de TI tem como objetivo fornecer um controlecompleto, integrado e abrangente aos produtos desenvolvidos e suportadospela área de TI, a fim de aperfeiçoar os processos, aumentar a produtividadee obter melhores resultados nos negócios através da TI

Distribution and provenance of heavy minerals from recent sediments of Green Lake, North Brazil, revisited

Geostatistical and multivariate statistical analyses were applied to heavy mineral data from an Amazonian fluvial-lake system near the Tapajós River mouth to investigate the spatial distribution and source-area of sediments. Twenty-one points were investigated, and the physical characteristics of the Green Lake deepest point were determined. Sand accumulates in the lake margins and mud quantity increases towards the lake center. Heavy mineral assemblage is composed of zircon, tourmaline, kyanite, rutile, staurolite, anatase, sillimanite, garnet, and spinel. Tourmaline, staurolite, and spinel are more abundant in the southeast area of the lake, while kyanite is dominant in the north area and zircon is in the whole lake except in its southeast area. Zircon - tourmaline and zircon - staurolite pairs are negatively correlated (r= -0.947 and -0.775, respectively), while tourmaline - staurolite and sillimanite - anatase pairs have a positive correlation (r= 0.628 and 0.675, respectively) which indicate different source rock types. Geostatistical analysis grouped the heavy minerals in three grups: Group 1 (tourmaline – staurolite – spinel - kyanite) and Group 2 (garnet – rutile – sillimanite - anatase) related to metamorphic source rocks ranging from medium to high grade, and Group 3 (zircon) related to acid igneous source rocks. The heavy mineral assemblage of Green Lake is analogous to the assemblage of the Alter do Chão Formation, indicating that this formation is the source of sediments of Green Lake

Desempenho do consórcio entre repolho e rabanete com pré-cultivo de crotalária, sob manejo orgânico.

Foram conduzidos dois experimentos no Sistema Integrado de Produção Agroecológica, em Seropédica, (RJ), durante dois anos consecutivos. O objetivo foi avaliar o desempenho do consórcio entre as culturas de repolho e rabanete com pré-cultivo de crotalária, sob manejo orgânico. Usou-se delineamento experimental de blocos ao acaso com sete repetições, em parcelas subdivididas, representando um fatorial 2 x 3, sendo o primeiro fator o pré-cultivo, com Crotalaria juncea e pousio (vegetação espontânea); e o segundo fator o sistema de cultivo (consórcio entre repolho e rabanete e os respectivos monocultivos). Não houve diferença significativa no tocante à produtividade do repolho ou rabanete, entre C. juncea e pousio, independentemente do tipo de manejo (monocultivos ou consórcio). O desenvolvimento do repolho não foi influenciado pela presença do rabanete, no consórcio entre essas espécies sob cultivo orgânico. O rabanete sob consórcio apresentou redução no diâmetro médio, massa média e produtividade de raízes, sem, contudo,desqualificar o padrão comercial das raízes colhidas. Considerando a média dos dois anos experimentais, o IEA atingiu 1,59, o que indicou a viabilidade do consórcio, otimizando práticas culturais, incluindo adubação,capina e irrigação

Influencia de la dinámica de estuarios sobre la variabilidad espacial de macrobentos a lo largo de la plataforma continental del sudeste de Brasil

Along the southeast continental shelf of Brazil, the Paraíba do Sul River (PSR) plays a fundamental role in sediment and nutrient transport. This study focuses on the contribution of the PSR and its effect on the benthic macrofauna. Physical and chemical analyses of the sediment were conducted, and the macrofauna were identified and counted. Multivariate analyses were used to compare the distribution patterns of the benthic assemblages related to the depth gradient over two sampling periods. The principal component analysis showed that shallow waters assemblages are mostly influenced by the environmental descriptors temperature, salinity and chlorophyll a, whereas pheophytin, degree of sediment sorting, total carbonate and organic carbon were correlated with benthic assemblages at greater depths. The high organic enrichment reflected an increase in surface and sub-surface deposit feeders such as the polychaetes Spiophanes sp. and Prionospio cristata and the crustacean Phtisica marinain the deeper stations, with a corresponding decrease in other trophic groups. This study provides evidence of differences in organic matter sources, from primary production in shallow waters to detritus in deep waters. These sources provide different niches for the corresponding macrofaunal assemblages along the continental shelf adjacent to the PSR, with species richness and abundance of benthic populations related to the river output.A lo largo de la plataforma continental del sudeste de Brasil, el río Paraíba do Sul (RPS) juega un papel fundamental en el transporte de sedimento y nutrientes. Este estudio se enfoca en la contribución del RPS y sus efectos sobre la macrofauna bentónica. Se condujeron análisis físicos y químicos del sedimento, y la macrofauna fue identificada y contada. Se realizaron análisis multivariados para comparar los patrones de distribución de los ensamblajes bentónicos relacionados al gradiente de profundidad en dos periodos de muestreo. El análisis de componentes principales (ACP) mostró que los ensamblajes de aguas poco profundas son influenciados principalmente por los descriptores ambientales de temperatura, salinidad, y clorofila a, mientras que la feofitina, grado de clasificación de sedimentos, carbonato total y el carbón orgánico estaban correlacionados a los ensamblajes bentónicos a mayores profundidades. El alto enriquecimiento orgánico se refleja en un incremento de detritívoros superficiales y sub-superficiales como los poliquetos Spiophanes sp. y Prionospio cristata y el crustáceo Phtisica marinaen las estaciones más profundas, con el decrecimiento correspondiente en otros grupos tróficos. Este estudio provee evidencia de diferencias entre fuentes de materia orgánica, desde la producción primaria en aguas poco profundas hasta detrito en aguas profundas, que proveen distintos nichos a los ensamblajes macrofaunales correspondientes a lo largo de la plataforma continental adyacente al RPS, con la riqueza de especies y abundancia de las poblaciones bentónicas relativas al flujo del rio

Increasing biomass in Amazonian forest plots

A previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink. However, these results generated a vigorous debate about sampling and methodological issues. Therefore we present a new analysis of biomass change in old-growth Amazonian forest plots using updated inventory data. We find that across 59 sites, the above-ground dry biomass in trees that are more than 10 cm in diameter (AGB) has increased since plot establishment by 1.22 ± 0.43 Mg per hectare per year (ha-1 yr-1), where 1 ha = 104 m2), or 0.98 ± 0.38 Mg ha-1 yr-1 if individual plot values are weighted by the number of hectare years of monitoring. This significant increase is neither confounded by spatial or temporal variation in wood specific gravity, nor dependent on the allometric equation used to estimate AGB. The conclusion is also robust to uncertainty about diameter measurements for problematic trees: for 34 plots in western Amazon forests a significant increase in AGB is found even with a conservative assumption of zero growth for all trees where diameter measurements were made using optical methods and/or growth rates needed to be estimated following fieldwork. Overall, our results suggest a slightly greater rate of net stand-level change than was reported by Phillips et al. Considering the spatial and temporal scale of sampling and associated studies showing increases in forest growth and stem turnover, the results presented here suggest that the total biomass of these plots has on average increased and that there has been a regional-scale carbon sink in old-growth Amazonian forests during the previous two decades

Vascular response after implantation of biolimus A9-eluting stent with bioabsorbable polymer and everolimus-eluting stents with durable polymer. Results of the optical coherence tomography analysis of the BIOACTIVE randomized trial

AbstractBackgroundIn BIOACTIVE study, we evaluated vascular responses after the implant of biolimus A9-eluting stent (BES; BioMatrixTM) and the everolimus-eluting stent (EES; XIENCE VTM). In this study, we present the optical coherence tomography analysis (OCT) 6 months post-intervention.MethodsPatients were randomized to treatment with BES (n = 22) or EES (n = 18). The primary outcome was the frequency of non-covered, poorly positioned struts by OCT.ResultsOCT was performed in 26 patients (BES: n = 15; EES: n = 11) and 749 tomographic images and 7,725 stent struts were analyzed. BES and EES showed similar luminal and stent areas. Neointimal hyperplasia area, neointimal thickness and the percentage of in-stent obstruction (8.44 ± 5.10% vs. 9.21 ± 6.36%; p = 0.74) were similar. The rates of not covered struts (BES: 2.10 ± 3.60% vs. ESS: 2.46 ± 2.15%, p = 0.77) and poorly positioned struts (BES: 0.48 ± 1.48% vs. EES 0.44 ± 1.05%, p = 0.94) were similarly low. The frequency of frames with signs consistent with peri-strut inflammatory infiltrate was low and similar between BES (15.53 ± 20.77%) and EES (11.70 ± 27.51%; p = 0.68).ConclusionsThe second-generation drug-eluting stents BES and EES were equally effective at suppressing the neointimal formation after 6 months, with favorable vascular responses. The frequency of frames with peri-strut infiltrate signals per patient was low, and lower than that observed historically with first-generation drug-eluting stents

Construcción de un cuestionario transcultural de motivos de abandono de la enseñanza superior

O abandono no Ensino Superior é um tema relevante pela sua incidência e consequências negativas no estudante, família, instituição e sociedade em geral. Procurando conhecer os motivos da intenção de abandono, investigadores do Brasil, Espanha e Portugal convergiram na construção de um questionário de avaliação transcultural. Atendendo à multidimensionalidade das causas de abandono, o questionário abarca seis dimensões: Social, Acadêmica, Professores, Saúde e Bem-estar, Institucional e Financeira. A análise fatorial, com amostras autônomas de estudantes do 1º ano do Brasil, Espanha e Portugal, mostrou uma distribuição adequada dos itens nas seis dimensões, com alguma discrepância na dimensão Professores na amostra do Brasil. Os índices de consistência interna atingiram níveis adequados nas seis dimensões (valores entre 0,74 e 0,91). Futuros desenvolvimentos devem testar a dimensionalidade do questionário e a sua invariância nos três países, incluindo já variáveis psicológicas e académicas para análise da validade de critério.The dropout in higher education assumes relevant percentages, with negative consequences for the students, family, institution and society in general. In order to know the reasons for the dropout intention, researchers from Brazil, Spain and Portugal converged on the construction of a transcultural questionnaire. Face the multidimensional nature of dropout causes, the questionnaire assesses six dimensions: Social, Academic, Faculty, Health and Wellbeing, Institutional, and Financial. The factorial analysis, with autonomous samples of first-year students from Brazil, Spain and Portugal, showed an adequate distribution of the items by the six dimensions, with some difficulties in Faculty dimension in Brazilian sample. The internal consistency of items reached adequate levels in those six dimensions (values range from .74 to .91). Future developments should test the dimensionality of the questionnaire and its invariance in all three countries, including other psychological and academic variables for criterion validity analysis. Keywords: higher education; dropout reasons; first-year studentsEl abandono en la enseñanza superior es un tema relevante por su incidencia y por sus consecuencias negativas a nivel personal, familiar, institucional y social. En búsqueda de conocer las razones de intención de abandono, investigadores de Brasil, España y Portugal participaron en la construcción de un cuestionario de evaluación transcultural. Dicho instrumento, de naturaleza multidimensional, se organiza en seis dimensiones: Social, Académica, Profesorado, Salud y Bienestar, Institucional y Financiera. El análisis factorial, con muestras independientes de los estudiantes del primer año de Brasil, España y Portugal, mostró una distribución adecuada de los ítems en las seis dimensiones, con alguna discrepancia en la dimensión Profesorado en la muestra brasileña. Los índices de consistencia interna alcanzaron niveles adecuados (valores entre .74 y .91), si bien que se debe realizar nuevos estudios para probar la dimensionalidad del cuestionario y su invariancia en los tres países, incluyendo las variables psicológicas y académicas para analizar la validez de criterio(undefined

Universality of the Lyapunov regime for the Loschmidt echo

The Loschmidt echo (LE) is a magnitude that measures the sensitivity of quantum dynamics to perturbations in the Hamiltonian. For a certain regime of the parameters, the LE decays exponentially with a rate given by the Lyapunov exponent of the underlying classically chaotic system. We develop a semiclassical theory, supported by numerical results in a Lorentz gas model, which allows us to establish and characterize the universality of this Lyapunov regime. In particular, the universality is evidenced by the semiclassical limit of the Fermi wavelength going to zero, the behavior for times longer than Ehrenfest time, the insensitivity with respect to the form of the perturbation and the behavior of individual (non-averaged) initial conditions. Finally, by elaborating a semiclassical approximation to the Wigner function, we are able to distinguish between classical and quantum origin for the different terms of the LE. This approach renders an understanding for the persistence of the Lyapunov regime after the Ehrenfest time, as well as a reinterpretation of our results in terms of the quantum--classical transition.Comment: 33 pages, 17 figures, uses Revtex