45 research outputs found

    Note on islands in path-length sequences of binary trees

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    An earlier characterization of topologically ordered (lexicographic) path-length sequences of binary trees is reformulated in terms of an integrality condition on a scaled Kraft sum of certain subsequences (full segments, or islands). The scaled Kraft sum is seen to count the set of ancestors at a certain level of a set of topologically consecutive leaves is a binary tree.Comment: 4 page

    Effective Lagrangian for sˉbg\bar{s}bg and sˉbγ\bar{s}b\gamma Vertices in the mSUGRA model

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    Complete expressions of the sˉbg\bar{s}bg and sˉbγ\bar{s}b\gamma vertices are derived in the framework of supersymmetry with minimal flavor violation. With the minimal supergravity (mSUGRA) model, a numerical analysis of the supersymmetric contributions to the Wilson Coefficients at the weak scale is presented.Comment: 12 pages + 7 ps figures, Late

    Comunicación educación un campo de resistencias

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    El presente libro obedece a la imperiosa necesidad de desplegar la potencia de la Facultad de Ciencias de la Comunicación en la Corporación Universitaria Minuto de Dios -UNIMINUTO, de otras comunidades académicas y de los espacios de movimiento social interesados en deconstruir los discursos de comunicación y educación desde la perspectiva del pensamiento crítico. En este caso entendemos potencia como la fuerza individual y colectiva capaz de rebasar la racionalidad dominante en la sociedad contemporánea, colonizada por la economía como única mirada del mundo; esto es, potencia como ímpetu insospechado por el poder. Por otra parte, el libro tiene como eje articulador el concepto de resistencia, definido este como el acto de recrear la realidad a partir de las posibilidades que ofrece la comunicación, para generar producción de sentido y dinamizar el cambio social. Propone realizar el ejercicio de concebir el mundo desde una perspectiva diferente a la hegemónica y de crear multiplicidades que trabajen unidas, reconociendo sus diferencias pero vinculándose en un “lugar común” del cual, cada una de ellas, regrese a su lugar cotidiano transformada por la acción colectiva del campo de Comunicación - Educación

    Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector

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    A search is performed for Higgs bosons produced in association with top quarks using the diphoton decay mode of the Higgs boson. Selection requirements are optimized separately for leptonic and fully hadronic final states from the top quark decays. The dataset used corresponds to an integrated luminosity of 4.5 fb−14.5 fb−1 of proton–proton collisions at a center-of-mass energy of 7 TeV and 20.3 fb−1 at 8 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess over the background prediction is observed and upper limits are set on the tt¯H production cross section. The observed exclusion upper limit at 95% confidence level is 6.7 times the predicted Standard Model cross section value. In addition, limits are set on the strength of the Yukawa coupling between the top quark and the Higgs boson, taking into account the dependence of the tt¯H and tH cross sections as well as the H→γγ branching fraction on the Yukawa coupling. Lower and upper limits at 95% confidence level are set at −1.3 and +8.0 times the Yukawa coupling strength in the Standard Model

    Comunicación educación un campo de resistencias

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    El presente libro obedece a la imperiosa necesidad de desplegar la potencia de la Facultad de Ciencias de la Comunicación en la Corporación Universitaria Minuto de Dios -UNIMINUTO, de otras comunidades académicas y de los espacios de movimiento social interesados en deconstruir los discursos de comunicación y educación desde la perspectiva del pensamiento crítico. En este caso entendemos potencia como la fuerza individual y colectiva capaz de rebasar la racionalidad dominante en la sociedad contemporánea, colonizada por la economía como única mirada del mundo; esto es, potencia como ímpetu insospechado por el poder. Por otra parte, el libro tiene como eje articulador el concepto de resistencia, definido este como el acto de recrear la realidad a partir de las posibilidades que ofrece la comunicación, para generar producción de sentido y dinamizar el cambio social. Propone realizar el ejercicio de concebir el mundo desde una perspectiva diferente a la hegemónica y de crear multiplicidades que trabajen unidas, reconociendo sus diferencias pero vinculándose en un “lugar común” del cual, cada una de ellas, regrese a su lugar cotidiano transformada por la acción colectiva del campo de Comunicación - Educación

    Actas de las V Jornadas ScienCity 2022. Fomento de la Cultura Científica, Tecnológica y de Innovación en Ciudades Inteligentes

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    ScienCity es una actividad que viene siendo continuada desde 2018 con el objetivo de dar a conocer los conocimientos y tecnologías emergentes siendo investigados en las universidades, informar de experiencias, servicios e iniciativas puestas ya en marcha por instituciones y empresas, llegar hasta decisores políticos que podrían crear sinergias, incentivar la creación de ideas y posibilidades de desarrollo conjuntas, implicar y provocar la participación ciudadana, así como gestar una red internacional multidisciplinar de investigadores que garantice la continuación de futuras ediciones. En 2022 se recibieron un total de 48 trabajos repartidos en 25 ponencias y 24 pósteres pertenecientes a 98 autores de 14 instituciones distintas de España, Portugal, Polonia y Países Bajos.Fundación Española para la Ciencia y la Tecnología-Ministerio de Ciencia, Innovación y Universidades; Consejería de la Presidencia, Administración Pública e Interior de la Junta de Andalucía; Estrategia de Política de Investigación y Transferencia de la Universidad de Huelva; Cátedra de Innovación Social de Aguas de Huelva; Cátedra de la Provincia; Grupo de investigación TEP-192 de Control y Robótica; Centro de Investigación en Tecnología, Energía y Sostenibilidad (CITES

    Concept and design of a genome-wide association genotyping array tailored for transplantation-specific studies

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    Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

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    Contains fulltext : 172380.pdf (publisher's version ) (Open Access

    Anticipating the Unpredictable: A Review of Antimicrobial Stewardship and Acinetobacter Infections

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    The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance

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    INTRODUCTION Investment in Africa over the past year with regard to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sequencing has led to a massive increase in the number of sequences, which, to date, exceeds 100,000 sequences generated to track the pandemic on the continent. These sequences have profoundly affected how public health officials in Africa have navigated the COVID-19 pandemic. RATIONALE We demonstrate how the first 100,000 SARS-CoV-2 sequences from Africa have helped monitor the epidemic on the continent, how genomic surveillance expanded over the course of the pandemic, and how we adapted our sequencing methods to deal with an evolving virus. Finally, we also examine how viral lineages have spread across the continent in a phylogeographic framework to gain insights into the underlying temporal and spatial transmission dynamics for several variants of concern (VOCs). RESULTS Our results indicate that the number of countries in Africa that can sequence the virus within their own borders is growing and that this is coupled with a shorter turnaround time from the time of sampling to sequence submission. Ongoing evolution necessitated the continual updating of primer sets, and, as a result, eight primer sets were designed in tandem with viral evolution and used to ensure effective sequencing of the virus. The pandemic unfolded through multiple waves of infection that were each driven by distinct genetic lineages, with B.1-like ancestral strains associated with the first pandemic wave of infections in 2020. Successive waves on the continent were fueled by different VOCs, with Alpha and Beta cocirculating in distinct spatial patterns during the second wave and Delta and Omicron affecting the whole continent during the third and fourth waves, respectively. Phylogeographic reconstruction points toward distinct differences in viral importation and exportation patterns associated with the Alpha, Beta, Delta, and Omicron variants and subvariants, when considering both Africa versus the rest of the world and viral dissemination within the continent. Our epidemiological and phylogenetic inferences therefore underscore the heterogeneous nature of the pandemic on the continent and highlight key insights and challenges, for instance, recognizing the limitations of low testing proportions. We also highlight the early warning capacity that genomic surveillance in Africa has had for the rest of the world with the detection of new lineages and variants, the most recent being the characterization of various Omicron subvariants. CONCLUSION Sustained investment for diagnostics and genomic surveillance in Africa is needed as the virus continues to evolve. This is important not only to help combat SARS-CoV-2 on the continent but also because it can be used as a platform to help address the many emerging and reemerging infectious disease threats in Africa. In particular, capacity building for local sequencing within countries or within the continent should be prioritized because this is generally associated with shorter turnaround times, providing the most benefit to local public health authorities tasked with pandemic response and mitigation and allowing for the fastest reaction to localized outbreaks. These investments are crucial for pandemic preparedness and response and will serve the health of the continent well into the 21st century
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