Ética y educación en Pandemia. Ensayo crítico, reflexiones desde un caso en Ecuador

Primer trimestre 2020, aislamiento social por Pandemia. Había que redimensionar la educación telepresencial. Seguir siendo maestros por vocación y decisión, formando ciudadanos para un mundo sin precedente. Nuevas exigencias de planificación para logros efectivos de aprendizaje. Actividades sincrónicas, asincrónicas y autónomas, convirtiendo el aula en una hiperaula, hiperconectada. El modelo constructivista, pedagogías innovadoras, didácticas colaborativas y dialógicas serían ensambladas desde la telemática, para validarlas como buenas prácticas, con el propósito de seguir formando alumnos que logren sus propios constructos cognitivos significativos y sustentables, desde el reto perpetuo y hoy más vigente que nunca de desaprender, para reaprender

YouTube, Instagram, entornos educativos emergentes en tiempos de teleducación y aprendizaje colaborativo

Today's society is significantly differentiated by multidirectional communication, which allows citizens to use the media, produce with them and get involved with new models of participation, coexistence and education. The foregoing raises the question: How is the use of social networks as emerging collaborative learning environments in times of tele-education? In this first study, with high school students and teachers in the city of Guayaquil (Ecuador), it was found that the use of social networks or platforms such as YouTube and Instagram are now used as tools that support the management of teaching-learning. of teachers and students. The research had a mixed, exploratory-descriptive approach. The techniques used were surveys and focus groups, with their respective instruments, their responses served to triangulate the information obtained. The context is situated with students from 15 to 20 years old and teachers of various subjects, from II and III of high school of the 2021-2022 school year, based on the use of social networks as virtual learning environments (EVA). These study subjects belong to the categorization in the stratification of socioeconomic level C- and D. The results show that there is a trend in the sharing and creation of content by teachers and students, especially mediated by the social networks YouTube and Instagram, giving these resources a new function in their use to achieve learning. sustainable and sustainable (satisfactory).La sociedad actual se diferencia significativamente por la comunicación multidireccional, la que permite que, los ciudadanos puedan usar los medios, producir con ellos e implicarse con nuevos modelos de participación, convivencia y educación. Lo anterior, hace que surja la pregunta: ¿Cómo se da el uso de redes sociales como entornos emergentes de aprendizaje colaborativo, en tiempos de teleducación? En este primer estudio, con estudiantes y maestros de bachillerato en la ciudad de Guayaquil (Ecuador), se halló que el uso de las redes o plataformas sociales como YouTube e Instagram, ahora son utilizadas como herramientas que apoyan la gestión de la enseñanza-aprendizaje de los profesores y estudiantes. La investigación tuvo un enfoque mixto, exploratorio-descriptivo. Las técnicas utilizadas fueron encuestas y grupos focales, con sus respectivos instrumentos, sus respuestas sirvieron para triangular la información obtenida. El contexto se sitúa con estudiantes de 15 a 20 años y maestros de materias varias, de II y III de bachillerato del año lectivo 2021-2022, a partir del uso de redes sociales como entornos virtuales de aprendizaje (EVA). Estos sujetos de estudio pertenecen a la categorización en la estratificación del nivel socioeconómico C- y D. Los resultados hallados, dejan en evidencia que existe una tendencia en la compartición y creación de contenido por parte de docentes y estudiantes, sobre todo, mediado por las redes sociales YouTube e Instagram, dándole una nueva función a estos recursos en su uso para lograr aprendizaje sustentables y sostenibles (satisfactorios)

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

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

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

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 jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe

Measurement of the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The second-order Fourier coefficients (v(2)) characterizing the azimuthal distributions of Y(1S) and Y(2S) mesons produced in PbPb collisions at root s(NN) = 5.02 TeV are studied. The Y mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb(-1). The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range vertical bar y vertical bar < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10-30%, 30-50% and 50-90%. In contrast to the J/psi mesons, the measured v(2) values for the Y mesons are found to be consistent with zero. (C) 2021 The Author(s). Published by Elsevier B.V.Peer reviewe

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

Peer reviewe

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

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

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