111 research outputs found

    ExatidĂŁo dos dados do sistema de vigilĂąncia epidemiolĂłgica da malĂĄria no estado do Amazonas

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    The Epidemiological Surveillance System for Malaria (SIVEP-Malaria) is the Brazilian governmental program that registers all information about compulsory reporting of detected cases of malaria by all medical units and medical practitioners. The objective of this study is to point out the main sources of errors in the SIVEP-Malaria database by applying a data cleaning method to assist researchers about the best way to use it and to report the problems to authorities. The aim of this study was to assess the quality of the data collected by the surveillance system and its accuracy. The SIVEP-Malaria data base used was for the state of Amazonas, Brazil, with data collected from 2003 to 2014. A data cleaning method was applied to the database to detect and remove erroneous records. It was observed that the collecting procedure of the database is not homogeneous among the municipalities and over the years. Some of the variables had different data collection periods, missing data, outliers and inconsistencies. Variables depending on the health agents showed a good quality but those that rely on patients were often inaccurate. We showed that a punctilious preprocessing is needed to produce statistically correct data from the SIVEP-Malaria data base. Fine spatial scale and multi-temporal analysis are of particular concern due to the local concentration of uncertainties and the data collecting seasonality observed. This assessment should help to enhance the quality of studies and the monitoring of the use of the SIVEP database.O Sistema de VigilĂąncia EpidemiolĂłgica de MalĂĄria (SIVEP-MalĂĄria) Ă© um programa governamental brasileiro que arquiva automaticamente todas as informaçÔes sobre casos de malĂĄria registrados em todas as unidades de saĂșde e consultĂłrios medicos. O objetivo deste estudo foi avaliar a qualidade dos dados coletados pelo sistema de vigilĂąncia e sua precisĂŁo. Foram utilizados os dados do SIVEP-MalĂĄria para o estado do Amazonas, Brasil, de 2003 a 2014. Um mĂ©todo de limpeza de dados foi aplicado para detectar e remover registros errĂŽneos. Observamos que a coleta de dados nĂŁo Ă© homogĂȘnea entre os municipios e ao longo dos anos. Algumas variaveis tinham diferentes padrĂ”es de coleta, falta de dados, dados discrepantes e inconsistĂȘncias. Dados que dependem do agente de saĂșde possuem boa qualidade mas aqueles que dependem dos pacientes sĂŁo frequentemente imprecisos. Mostramos que um pre-processamento meticuloso Ă© necessĂĄrio para produzir dados estatisticamente corretos a partir do SIVEP-MalĂĄria. Analises em escala espacial detalhada ou multi-temporais sĂŁo particularmente afetadas devido Ă  concentração local de incertezas e a sazonalidade observada na coleta de dados. Esta avaliação deve auxiliar a melhorar os estudos e monitoramentos que fazem uso dos dados do SIVEP

    NĂșmero mĂ­nimo de mediçÔes para a avaliação acurada de caracterĂ­sticas agronĂŽmicas de pinhĂŁo-manso

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    Resumo: O objetivo deste trabalho foi identificar o mĂ©todo mais eficaz para estimar coeficientes de repetibilidade em progĂȘnies de meios-irmĂŁos de pinhĂŁo-manso (Jatropha curcas) e predizer o nĂșmero mĂ­nimo de mediçÔes necessĂĄrias para algumas caracterĂ­sticas agronĂŽmicas da oleaginosa. Avaliaram-se 18 famĂ­lias de meios-irmĂŁos, em delineamento de blocos ao acaso, com trĂȘs repetiçÔes, de 2009 a 2013. Nesse perĂ­odo, as seguintes caracterĂ­sticas foram avaliadas: altura de plantas, diĂąmetro do caule, nĂșmero de ramos por planta, projeção da copa na linha, projeção da copa na entrelinha e produtividade de grĂŁos. O coeficiente de repetibilidade (r) foi estimado a partir de diferentes estratĂ©gias: anĂĄlise de variĂąncia; anĂĄlise dos componentes principais (ACP), com base na matriz de correlaçÔes (CPCOR); ACP, com base na matriz de variĂąncias e covariĂąncias fenotĂ­picas (CPCOV); e anĂĄlise estrutural, com base na matriz de correlaçÔes. A estratĂ©gia CPCOV proporciona estimativas mais acuradas do coeficiente de repetibilidade e do nĂșmero de mediçÔes necessĂĄrias (no mĂ­nimo quatro) para avaliação acurada (mĂ­nimo 80%) das caracterĂ­sticas, devido ao comportamento cĂ­clico das progĂȘnies

    ϒ production in p–Pb collisions at √sNN=8.16 TeV

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    ϒ production in p–Pb interactions is studied at the centre-of-mass energy per nucleon–nucleon collision √sNN = 8.16 TeV with the ALICE detector at the CERN LHC. The measurement is performed reconstructing bottomonium resonances via their dimuon decay channel, in the centre-of-mass rapidity intervals 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum. In this work, results on the ϒ(1S) production cross section as a function of rapidity and transverse momentum are presented. The corresponding nuclear modification factor shows a suppression of the ϒ(1S) yields with respect to pp collisions, both at forward and backward rapidity. This suppression is stronger in the low transverse momentum region and shows no significant dependence on the centrality of the interactions. Furthermore, the ϒ(2S) nuclear modification factor is evaluated, suggesting a suppression similar to that of the ϒ(1S). A first measurement of the ϒ(3S) has also been performed. Finally, results are compared with previous ALICE measurements in p–Pb collisions at √sNN = 5.02 TeV and with theoretical calculations.publishedVersio

    (Anti-)deuteron production in pp collisions at 1as=13TeV

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    The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of (anti-)deuterons is studied as a function of the charged particle multiplicity in inelastic pp collisions at s=13 TeV using the ALICE experiment. Thanks to the large number of accumulated minimum bias events, it has been possible to measure (anti-)deuteron production in pp collisions up to the same charged particle multiplicity (d Nch/ d \u3b7 3c 26) as measured in p\u2013Pb collisions at similar centre-of-mass energies. Within the uncertainties, the deuteron yield in pp collisions resembles the one in p\u2013Pb interactions, suggesting a common formation mechanism behind the production of light nuclei in hadronic interactions. In this context the measurements are compared with the expectations of coalescence and statistical hadronisation models (SHM)

    Multiplicity dependence of inclusive J/psi production at midrapidity in pp collisions at root s=13 TeV

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    Measurements of the inclusive J/psi yield as a function of charged-particle pseudorapidity density dN(ch)/d eta in pp collisions at root s = 13 TeV with ALICE at the LHC are reported. The J/psi meson yield is measured at midrapidity (vertical bar y vertical bar <0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (vertical bar eta vertical bar <1) and at forward rapidity (-3.7 <eta <-1.7 and 2.8 <eta <5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/psi yield with normalized dN(ch)/d eta is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively. (C) 2020 European Organization for Nuclear Research. Published by Elsevier B.V.Peer reviewe

    Position Paper on Water, Energy, Food and Ecosystem (WEFE) Nexus and Sustainable development Goals (SDGs)

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    The EU and the international community is realising that the Water, Energy, Food and Ecosystem components are interlinked and require a joint planning in order to meet the daunting global challenges related to Water, Energy and Food security and maintaining the ecosystem health and in this way, reach the SDGs. If not dealt with, the world will not be able to meet the demand for water, energy and food in a not too far future and, in any case, in a not sustainable way. The strain on the ecosystems resulting from unsustainable single-sector planning will lead to increasing poverty, inequality and instability. The Nexus approach is fully aligned with and supportive of the EU Consensus on Development. Key elements of the Consensus will require collaborative efforts across sectors in ways that can be supported/implemented by a Nexus approach. In this way, transparent and accountable decision-making, involving the civil society is key and common to the European Consensus on Development and the Nexus approach. The Nexus approach will support the implementation of the SDG in particular SDG 2 (Food), SDG 6 (Water) and SDG 7 (Energy), but most SDGs have elements that link to food, water and energy in one or other way, and will benefit from a Nexus approach. The SDGs are designed to be cross-cutting and be implemented together, which is also reflected in a WEFE Nexus approach. A Nexus approach offers a sustainable way of addressing the effects of Climate Change and increase resilience. The WEFE Nexus has in it the main drivers of climate change (water, energy and food security) and the main affected sectors (water and the environment). Decisions around policy, infrastructure, 
 developed based on the WEFE Nexus assessments will be suitable as elements of climate change mitigation and adaptation. In fact, it is difficult to imagine solutions to the climate change issue that are not built on a form of Nexus approach. The Nexus approach is being implemented around the world, as examples in the literature demonstrate. These examples together with more examples from EU and member state development cooperation will help build experience that can be consolidated and become an important contribution to a Toolkit for WEFE Nexus Implementation. From the expert discussions, it appears that because of the novelty of the approach, a Toolkit will be an important element in getting the Nexus approach widely used. This should build on experiences from practical examples of NEXUS projects or similar inter-sectorial collaboration projects; and, there are already policy, regulation and practical experience to allow institutions and countries to start applying the Nexus concept.JRC.D.2-Water and Marine Resource
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