Providing stringent star formation rate limits of z∼\sim2 QSO host galaxies at high angular resolution

We present integral field spectrograph (IFS) with laser guide star adaptive optics (LGS-AO) observations of z=2 quasi-stellar objects (QSOs) designed to resolve extended nebular line emission from the host galaxy. Our data was obtained with W. M. Keck and Gemini-North Observatories using OSIRIS and NIFS coupled with the LGS-AO systems. We have conducted a pilot survey of five QSOs, three observed with NIFS+AO and two observed with OSIRIS+AO at an average redshift of z=2.15. We demonstrate that the combination of AO and IFS provides the necessary spatial and spectral resolutions required to separate QSO emission from its host. We present our technique for generating a PSF from the broad-line region of the QSO and performing PSF subtraction of the QSO emission to detect the host galaxy. We detect H$\alpha$ and [NII] for two sources, SDSS J1029+6510 and SDSS J0925+06 that have both star formation and extended narrow-line emission. Assuming that the majority of narrow-line H$\alpha$ is from star formation, we infer a star formation rate for SDSS J1029+6510 of 78.4 M$_\odot$yr$^{-1}$ originating from a compact region that is kinematically offset by 290 - 350 km/s. For SDSS J0925+06 we infer a star formation rate of 29 M$_\odot$yr$^{-1}$ distributed over three clumps that are spatially offset by $\sim$ 7 kpc. The null detections on three of the QSOs are used to infer surface brightness limits and we find that at 1.4 kpc distance from the QSO that the un-reddened star formation limit is $<$ 0.3 M$_\odot$yr$^{-1}$kpc$^{-2}$. If we assume a typical extinction values for z=2 type-1 QSOs, the dereddened star formation rate for our null detections would be $<$ 0.6 M$_\odot$yr$^{-1}$kpc$^{-2}$. These IFS observations indicate that if star formation is present in the host it would have to occur diffusely with significant extinction and not in compact, clumpy regions.Comment: 17 pages, 7 figures, 7 tables, Accepted to Ap

表紙 1

Objetivo: Verificar o conhecimento de pacientes em acompanhamento ambulatorial sobre a terapia com anticoagulantes orais. Métodos: Estudo de corte transversal com abordagem quantitativa, realizado no Pronto Socorro Cardiológico de Pernambuco (PROCAPE) com 100 indivíduos. Utilizou-se instrumento específico de 10 questões. Foram atribuídas pontuações às respostas, posteriormente classificadas como conhecimento insuficiente, conhecimento regular e conhecimento adequado, segundo ponto de corte. A pesquisa foi aprovada por Comitê de Ética em Pesquisa, CAAE nº30622114.2.0000.5192. Resultados: Apenas 39% dos indivíduos apresentaram conhecimento adequado sobre o tratamento. Houve significância estatística nas associações do conhecimento com sexo (p=0,042), idade (p= 0,015), anos de estudo (p=0,021) e tempo médio de acompanhamento ambulatorial (p=0,010). Conclusão: A predominância de conhecimento não adequado (61%) demonstram a necessidade de implementação de estratégias educativas que favoreçam a compreensão sobre o tratamento, estimulando a adesão farmacológica e reduzindo eventuais complicações.

Fermi Large Area Telescope Constraints on the Gamma-ray Opacity of the Universe

The Extragalactic Background Light (EBL) includes photons with wavelengths from ultraviolet to infrared, which are effective at attenuating gamma rays with energy above ~10 GeV during propagation from sources at cosmological distances. This results in a redshift- and energy-dependent attenuation of the gamma-ray flux of extragalactic sources such as blazars and Gamma-Ray Bursts (GRBs). The Large Area Telescope onboard Fermi detects a sample of gamma-ray blazars with redshift up to z~3, and GRBs with redshift up to z~4.3. Using photons above 10 GeV collected by Fermi over more than one year of observations for these sources, we investigate the effect of gamma-ray flux attenuation by the EBL. We place upper limits on the gamma-ray opacity of the Universe at various energies and redshifts, and compare this with predictions from well-known EBL models. We find that an EBL intensity in the optical-ultraviolet wavelengths as great as predicted by the "baseline" model of Stecker et al. (2006) can be ruled out with high confidence.Comment: 42 pages, 12 figures, accepted version (24 Aug.2010) for publication in ApJ; Contact authors: A. Bouvier, A. Chen, S. Raino, S. Razzaque, A. Reimer, L.C. Reye

Mathematical control theory and Finance

Control theory provides a large set of theoretical and computational tools with applications in a wide range of fields, running from ”pure” branches of mathematics, like geometry, to more applied areas where the objective is to find solutions to ”real life” problems, as is the case in robotics, control of industrial processes or finance. The ”high tech” character of modern business has increased the need for advanced methods. These rely heavily on mathematical techniques and seem indispensable for competitiveness of modern enterprises. It became essential for the financial analyst to possess a high level of mathematical skills. Conversely, the complex challenges posed by the problems and models relevant to finance have, for a long time, been an important source of new research topics for mathematicians. The use of techniques from stochastic optimal control constitutes a well established and important branch of mathematical finance. Up to now, other branches of control theory have found comparatively less application in financial problems. To some extent, deterministic and stochastic control theories developed as different branches of mathematics. However, there are many points of contact between them and in recent years the exchange of ideas between these fields has intensified. Some concepts from stochastic calculus (e.g., rough paths) have drawn the attention of the deterministic control theory community. Also, some ideas and tools usual in deterministic control (e.g., geometric, algebraic or functional-analytic methods) can be successfully applied to stochastic control. We strongly believe in the possibility of a fruitful collaboration between specialists of deterministic and stochastic control theory and specialists in finance, both from academic and business backgrounds. It is this kind of collaboration that the organizers of the Workshop on Mathematical Control Theory and Finance wished to foster. This volume collects a set of original papers based on plenary lectures and selected contributed talks presented at the Workshop. They cover a wide range of current research topics on the mathematics of control systems and applications to finance. They should appeal to all those who are interested in research at the junction of these three important fields as well as those who seek special topics within this scope.info:eu-repo/semantics/publishedVersio

A population of gamma-ray emitting globular clusters seen with the Fermi Large Area Telescope

Globular clusters with their large populations of millisecond pulsars (MSPs) are believed to be potential emitters of high-energy gamma-ray emission. Our goal is to constrain the millisecond pulsar populations in globular clusters from analysis of gamma-ray observations. We use 546 days of continuous sky-survey observations obtained with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope to study the gamma-ray emission towards 13 globular clusters. Steady point-like high-energy gamma-ray emission has been significantly detected towards 8 globular clusters. Five of them (47 Tucanae, Omega Cen, NGC 6388, Terzan 5, and M 28) show hard spectral power indices $(0.7 < \Gamma <1.4)$ and clear evidence for an exponential cut-off in the range 1.0-2.6 GeV, which is the characteristic signature of magnetospheric emission from MSPs. Three of them (M 62, NGC 6440 and NGC 6652) also show hard spectral indices $(1.0 < \Gamma < 1.7)$, however the presence of an exponential cut-off can not be unambiguously established. Three of them (Omega Cen, NGC 6388, NGC 6652) have no known radio or X-ray MSPs yet still exhibit MSP spectral properties. From the observed gamma-ray luminosities, we estimate the total number of MSPs that is expected to be present in these globular clusters. We show that our estimates of the MSP population correlate with the stellar encounter rate and we estimate 2600-4700 MSPs in Galactic globular clusters, commensurate with previous estimates. The observation of high-energy gamma-ray emission from a globular cluster thus provides a reliable independent method to assess their millisecond pulsar populations that can be used to make constraints on the original neutron star X-ray binary population, essential for understanding the importance of binary systems in slowing the inevitable core collapse of globular clusters.Comment: Accepted for publication in A&A. Corresponding authors: J. Kn\"odlseder, N. Webb, B. Pancraz

A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE

In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio

Intraspecific variation in Black Caiman (Melanosuchus niger) embryonic development

Steps in the embryonic development of crocodilians are usually species-specific, highlighting the plasticityof the process. Herein we describe intraspecific variation in the growth of embryos in three Black Caiman(Melanosuchus niger) nests monitored in situ in the Central Brazilian Amazon. Nests differed in which embryonic stagesthe first increases in total length and mass occurred. Differences from a previous study of the same species included thetiming of morphological characteristics such as the closure of the abdominal wall. Therefore, our data are indicative of theplasticity of embryonic development of Black Caimans in natural conditions

Drogas, urbanismo militar e gentrificação: o caso da ?Cracolândia? paulistana

O presente trabalho pretende entender a forma pela qual a guerra às drogas atua como vetor de gentrificação na região da Cracolândia paulistana. Nesse sentido, o combate ao crack, por meio estratégias de urbanismo militar, tem por escopo tão somente a substituição dos moradores do local por residentes de classes superiores, a fim de transformar o centro de São Paulo em um local que possa ser definido nos parâmetros de uma cidade global

COMPREENSÃO DA ADVERSIDADE AO ACESSO À SAÚDE DOS POVOS INDÍGENAS: UMA REVISÃO DA LITERATURA

The health provided to indigenous peoples cannot be restricted to technological resources only, it must be linked to their traditional culture so that it is possible to obtain better results in terms of health-disease at the local level. The objective of this work is, through the review of the recent literature, to understand more clearly how the indigenous peoples have access to health services and how is the attention given to them. Method: The analysis performed was obtained through online surveys in national journals. This is an integrative review of the literature using the electronic databases Scientific Electronic Library Online (SCIELO) and Scientific and Technical Literature of Latin America and the Caribbean (LILACS), where the time cut for the inclusion of 2015 publications was established to 2019. 7 scientific articles were selected. Results: Through the selection of articles, a huge disregard for indigenous health was observed, as they submitted to unpleasant situations, of very poor quality, often, and the lack of humanization in caring for them, as well as the traditional way how health care is carried out fails to meet the demand of indigenous peoples. Conclusion: It was concluded that indigenous health, despite the evolution over time, still needs to be improved in several aspects and to have more attention, so that, in this way, they can give them what should in fact be guaranteed.A saúde fornecida aos povos indígenas não pode se restringir apenas a recursos tecnológicos, deve ser vinculada a sua cultura tradicional para que seja possível obter melhores resultados no quesito saúde-doença ao âmbito local. O objetivo deste trabalho é, através da revisão da literatura recente, compreender com mais clareza como se dá o acesso dos povos indígenas a serviços de saúde e como é a atenção dada a eles. Método: A análise realizada foi obtida por meio de pesquisas on-line em periódicos nacionais. Trata-se de uma revisão integrativa da literatura utilizando as bases de dados eletrônicas Scientific Electronic Library Online (SCIELO) e Literatura Científica e Técnica da América Latina e Caribe (LILACS), onde foi estabelecido o recorte de tempo para a inclusão de publicações de 2015 a 2019. Foram selecionados 7 artigos científicos. Resultados: Por meio da seleção dos artigos, foi observado um enorme descaso com a saúde indígena, por se submeterem a situações desagradáveis, de péssima qualidade, muitas das vezes, e a falta de humanização nos cuidados com os mesmos, bem como a forma tradicional como é realizada os cuidados em saúde não consegue atingir a demanda dos povos indígenas. Conclusão: Concluiu-se que, a saúde indígena, apesar da evolução ao longo do tempo, ainda assim precisa ser aperfeiçoada em vários aspectos e ter mais atenção, para que assim, possam dar a eles o que de fato os deveria ser garantido