662 research outputs found

    Desarrollo Endógeno a partir de la identificación de las vocaciones productivas, caso Comunidad Indígena Emberá Chamí, Resguardos Dachi Drua y Drua Do en los municipios de Tuluá y Trujillo.

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    La comunidad indígena Emberá Chamí, de acuerdo al Auto 004 de 2009 de la Corte Constitucional de Colombia, ha sido declarada como uno de los 34 pueblos en riesgo de extinción física y cultural, situación que se debe al conflicto armado interno, por la violación de sus derechos individuales y colectivos y del derecho Internacional Humanitario, lo cual, conlleva al desplazamiento forzado, masacres, amenazas, señalamientos, asesinatos, desapariciones forzadas, y confrontaciones, lo cual ha contribuido que el pueblo Chamí pierda su derecho al territorio, a la autonomía, control sobre los recursos naturales y a la consulta previa por parte del estado y las organizaciones de índole privado, en tanto, a los proyectos que se van a emprender en su territorio y los afecta directamente. Distinto a las carencias de esta población indígena, se identificó la posibilidad de que sean competitivos, a través de la producción y comercialización de bienes y servicios derivados de las diferentes vocaciones productivas. Mediante la caracterización económica, socio-cultural y ambiental realizada al resguardo objeto de estudio, se realizó un análisis que permitió la identificación de las vocaciones productivas (como son la producción artesanal, la producción de hierbas aromáticas y los productos agrícolas, respetando y guiados por la cultura y tradiciones del resguardo) bajo un enfoque de aprovechabilidad, competitividad y sostenibilidad, cumpliendo con el objetivo de formular un plan de Desarrollo Endógeno enfocado a fortalecer la comunidad

    Los medios digitales ante la crisis humanitaria. Haití, Honduras, Venezuela, Rusia-Ucrania y Siria

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    Hoy en día los medios de comunicación deben desempeñar una función social al servicio del público al que se dirigen, especialmente durante los sucesos de gran impacto, como las crisis humanitarias y las catástrofes. Durante este período de desequilibrio social, la propagación de imágenes, videos e información engañosa se intensifica y provoca una falsa ilusión de verdad y realidad, coadyuvando a que la calidad de la información sea sacrificada por la inmediatez y el consumo masivo (Toledano y Ardevól-Abreu, 2013). Bajo esta premisa, estudiantes de la carrera de Comunicación de la Universidad Politécnica Salesiana, Ecuador han realizado el siguiente trabajo titulado “Informe N°1 del Observatorio Internacional sobre los Medios Digitales ante las Crisis Humanitaria”, con el objetivo de analizar y verificar los acontecimientos más relevantes sobre las crisis humanitarias alrededor del mundo y la implicación de los medios en su impacto. Se debe igualmente mencionar que este primer informe forma parte de un proyecto de investigación elaborado por los grupos de investigación Gamelab-UPS y el grupo Comunicación, Educación y Ambiente (GICEA). El objetivo del Primer Observatorio Internacional es verificar y analizar las noticias falsas y bulos que transitan de manera deliberada por la web. Para ello han realizado un análisis minucioso de la información difundida por los medios de comunicación más importantes de Ecuador, Perú y Colombia. En definitiva, el conocimiento de la realidad es lo que le permite a los receptores de contenido formarse una opinión sobre el mundo que los rodea; sin embargo, el desmesurado flujo de información y las noticias falsas (fake news) menoscaban esa credibilidad generando desinformación (Gonzáles, 2019)

    MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

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    Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

    Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

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    The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

    Measurement of B-c(2S)(+) and B-c*(2S)(+) cross section ratios in proton-proton collisions at root s=13 TeV

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    Measurement of the W gamma Production Cross Section in Proton-Proton Collisions at root s=13 TeV and Constraints on Effective Field Theory Coefficients

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    A fiducial cross section for W gamma production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb(-1) of data collected using the CMS detector at the LHC. The W -> e nu and mu nu decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.Peer reviewe

    Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

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    A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.Peer reviewe

    Observation of the Production of Three Massive Gauge Bosons at root s=13 TeV

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    The first observation is reported of the combined production of three massive gauge bosons (VVV with V = W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 137 fb(-1). The searches for individualWWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The observed (expected) significance of the combinedVVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02(-0.23)(+0.26). The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported

    Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

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    This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

    Search for dark photons in Higgs boson production via vector boson fusion in proton-proton collisions at √s = 13 TeV

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    A search is presented for a Higgs boson that is produced via vector boson fusion and that decays to an undetected particle and an isolated photon. The search is performed by the CMS collaboration at the LHC, using a data set corresponding to an integrated luminosity of 130 fb−1, recorded at a center-of-mass energy of 13 TeV in 2016–2018. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for production via vector boson fusion and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a Higgs boson mass of 125 GeV, assuming the standard model production rates, the observed (expected) 95% confidence level upper limit on the branching fraction is 3.5 (2.8)%. This is the first search for such decays in the vector boson fusion channel. Combination with a previous search for Higgs bosons produced in association with a Z boson results in an observed (expected) upper limit on the branching fraction of 2.9 (2.1)% at 95% confidence level
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