817 research outputs found

    Infrastructures for Open Science in Europe: the power of Repositories

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    [ES]Para lograr el potencial de crear un cuerpo unificado de resultados de la investigación necesitamos contenidos OA e interoperabilidad. Posicionar los repositorios (y sus instituciones) como la base para una infraestructura de comunicación académica y científica distribuida y globalmente interconectada

    Construir um Portal de Investigação para a Ciência Aberta com o software VIVO – o caso o projeto PortAberta da UMinho e do IPB

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    O projeto PortAberta – Portal de Investigação para a Ciência Aberta – tem como promotores a Universidade do Minho (UMinho) e o Instituto Politécnico de Bragança (IPB). A iniciativa surge com o propósito de colmatar uma necessidade partilhada de estabelecer um sistema CRIS e um Portal de Investigação, como ferramentas para apoiar e reforçar a afirmação na investigação e inovação alicerçada em sistemas de software aberto, sob os princípios da Ciência Aberta e alinhado com as iniciativas nacionais, assegurando a sustentabilidade à operação e a sua relevância como uma boa prática a nível nacional e europeu. O “Portal de Investigação para a Ciência Aberta” em desenvolvimento no quadro da operação SAMA de modernização PortAberta, surgiu com o objetivo de disponibilizar “Portais de Investigação” que facilitem o acesso, a consulta e a utilização da informação da Investigação na UMinho e IPB, quer internamente pelos seus membros e órgãos, quer externamente, promovendo a visibilidade, o impacto da atividade e dos resultados de I&D. Estes portais de investigação da UMinho e do IPB serão operacionalizados através da implementação do software VIVO. O VIVO é um software de código aberto, apoiado pela Comunidade Lyrasis, para representar a atividade académica e científica de investigadores, instituições, centros de investigação e projetos. A operacionalização do software VIVO apoia a edição, pesquisa, navegação e visualização da atividade académica e científica individual e institucional, encorajando o registo académico e a avaliação do impacto dos resultados de investigação. Na prática, o software VIVO é um sistema de gestão de informação académica e cientifica que se apresenta com as seguintes funções: Acesso online – o VIVO disponibiliza um portal online onde é possível consultar a Comunidade Académica, o seu trabalho e as suas interligações. Obtenção de dados – disponibilização de determinados dados conforme as permissões atribuídas aos diferentes intervenientes. Controlo de acesso – possibilidade de autenticação através de Shibboleth ou com base em palavra-chave A nível da arquitetura, o VIVO depende de vários componentes de software de código aberto Fundamentalmente, a VIVO baseia-se no Vitro1. VIVO adiciona uma coleção de ontologias para representar dados sobre o sistema académico. O Vitro é um motor de web semântica de código aberto, de uso geral, sendo a plataforma de desenvolvimento de aplicações subjacente ao VIVO. Por último, o VIVO, como sistema de gestão de informação académica e científica, recolhe e armazena dados estruturados sobre unidades de investigação, pessoas (docentes, investigadores), projetos e resultados de investigação (publicações, dados, patentes). Esta recolha pode ser feita de forma automática a partir de sistemas locais, tais como os serviços de Recursos Humanos, ou a partir de sistemas externos como o CienciaVitae, agregadores de publicações, projetos e/ou agências de financiamentos. Esta apresentação, para além de apresentar o software VIVO e o caso de uso do PortAberta, irá explicitar as principais razões para a opção por este software para o desenvolvimento de portais de investigações em Instituições de investigação e Ensino Superior em Portugal.POCI-05-5762-FSE-000431 - Porta Abertainfo:eu-repo/semantics/publishedVersio

    Towards a European network of FAIR-enabling Trustworthy Digital Repositories (TDRs) - A Working Paper

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    This working paper is a bottom-up initiative of a group of stakeholders from the European repository community. Its purpose is to outline an aspirational vision of a European Network of FAIR-enabling Trustworthy Digital Repositories (TDRs). This initiative originates from the workshop entitled “Towards exploring the idea of establishing the Network”. The paper was created in close connection with the wider community, as its core was built on community feedback and the first draft of the paper was shared for community-wide consultation. This paper will serve as input for the EOSC Task Force on Long Term Digital Preservation. One of the core activities mentioned in the charter of this Task Force is to produce recommendations on the creation of such a network. The working paper puts together a vision of how a European network of FAIR-enabling TDRs could be based on the community’s needs and its most important functions: Networking and knowledge exchange, stakeholder advocacy and engagement, and coordination and development. The specific activities hosted under these umbrella functions could address the wide range of topics that are important to TDRs. Beyond these functions and the challenges they address, the paper presents a framework to highlight aspects of the Network to further explore in the next steps of its development

    Business consulting - Agregados y Concretos SRL

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    Agregados y Concretos SRL (AGRECON) es una empresa familiar, creada en Ica durante el 2001, dedicada tanto a la fabricación como a la comercialización de variados productos y servicios que cubren las necesidades del sector construcción. Además, su cartera de clientes está conformada en un 90% por empresas privadas, mientras que el 10% está representada por personas naturales. Ahora bien, el objetivo de la consultoría fue identificar el problema principal a través de una revisión integral de la empresa y brindar propuestas de solución. Igualmente, resultado del análisis se identificó que el problema principal era que la línea de negocio de agregados presentaba un volumen de ventas bajo con relación a la capacidad de producción instalada, debido a la alejada ubicación de la planta de agregados, la cual se encuentra a 20.1 km del centro principal de venta de agregados de Ica, conocido como la Av. Siete. En definitiva, para solucionar este problema, luego de realizar una revisión de literatura acorde al problema identificado, se utilizó el diagrama causa-efecto para detectar las principales causas del problema clave y se propuso las tres soluciones siguientes: (a) efectuar una segmentación del mercado local de agregados, (b) buscar un punto estratégico de distribución para los agregados, y (c) analizar escenarios sobre proyecciones de ventas de los agregados, optándose por la segunda de éstas. Asimismo, fueron evaluados los indicadores financieros necesarios y se realizaron las proyecciones correspondientes.Agregados y Concretos SRL (AGRECON) is a family business, created in Ica in 2001, dedicated both to the manufacture and marketing of various products and services that meet the needs of the construction sector. In addition, its client portfolio is made up of 90% by private companies, while 10% is represented by natural persons. Now, the objective of the consultancy was to identify the main problem through a comprehensive review of the company and provide solution proposals. Likewise, as a result of the analysis, it was identified that the main problem was that the aggregates business line presented a low sales volume in relation to the installed production capacity, due to the remote location of the aggregates plant, which is located 20.1 km from the main aggregate sales center of Ica, known as Siete Ave. In short, to solve this problem, after conducting a literature review according to the identified problem, the cause-effect diagram was used to detect the main causes of the key problem and the following three solutions were proposed: (a) carry out a segmentation of the local aggregates market, (b) seek a strategic distribution point for aggregates, and (c) analyze scenarios on sales projections of aggregates, opting for the second of these. Likewise, the necessary financial indicators were evaluated and the corresponding projections were made

    Measurement of the tt¯tt¯ production cross section in pp collisions at √s=13 TeV with the ATLAS detector

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    A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of 139 fb−1 is presented. Events are selected if they contain a single lepton (electron or muon) or an opposite-sign lepton pair, in association with multiple jets. The events are categorised according to the number of jets and how likely these are to contain b-hadrons. A multivariate technique is then used to discriminate between signal and background events. The measured four-top-quark production cross section is found to be 26+17−15 fb, with a corresponding observed (expected) significance of 1.9 (1.0) standard deviations over the background-only hypothesis. The result is combined with the previous measurement performed by the ATLAS Collaboration in the multilepton final state. The combined four-top-quark production cross section is measured to be 24+7−6 fb, with a corresponding observed (expected) signal significance of 4.7 (2.6) standard deviations over the background-only predictions. It is consistent within 2.0 standard deviations with the Standard Model expectation of 12.0 ± 2.4 fb

    Measurement and interpretation of same-sign W boson pair production in association with two jets in pp collisions at s = 13 TeV with the ATLAS detector

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    This paper presents the measurement of fducial and diferential cross sections for both the inclusive and electroweak production of a same-sign W-boson pair in association with two jets (W±W±jj) using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of √s = 13 TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed by selecting two same-charge leptons, electron or muon, and at least two jets with large invariant mass and a large rapidity diference. The measured fducial cross sections for electroweak and inclusive W±W±jj production are 2.92 ± 0.22 (stat.) ± 0.19 (syst.)fb and 3.38±0.22 (stat.)±0.19 (syst.)fb, respectively, in agreement with Standard Model predictions. The measurements are used to constrain anomalous quartic gauge couplings by extracting 95% confdence level intervals on dimension-8 operators. A search for doubly charged Higgs bosons H±± that are produced in vector-boson fusion processes and decay into a same-sign W boson pair is performed. The largest deviation from the Standard Model occurs for an H±± mass near 450 GeV, with a global signifcance of 2.5 standard deviations

    Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

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    Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

    Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS

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