Estudio exploratorio de la comprensión de los docentes ecuatorianos sobre el aprendizaje socioemocional: un análisis de los docentes de la escuela primaria

Direct instruction of Social Emotional Learning (SEL) has been suggested for improving academic performance and reducing behavioral issues in classrooms (CASEL, 2020). This exploratory study provides insight into how a group of Ecuadorian elementary school teachers define and understand SEL. It examined changes in teachers’ perspectives and beliefs about their role in SEL integration in elementary school classrooms, after a full-day workshop focused on SEL integration. Quantitative and qualitative data collected before, during and after the SEL workshop indicated a positive change in the teachers’ foundational knowledge of SEL after participation in the workshop; however, there was no observed change in the teachers’ perceptions of their role in the actual implementation of SEL. Challenges and future implications for an effective integration of SEL are discussed in this research article.Se ha sugerido que la instrucción directa del aprendizaje socioemocional (SEL) puede mejorar el rendimiento académico y puede reducir los problemas de conducta en las aulas (CASEL, 2020). Este estudio exploratorio proporciona información sobre cómo un grupo de maestros ecuatorianos de una escuela primaria definen y comprenden SEL. Este estudio examinó los cambios en las perspectivas y creencias de los maestros sobre su papel en la integración de SEL en las aulas de la escuela primaria, después de un taller de un día completo centrado en la integración de SEL. Los datos cuantitativos y cualitativos recopilados antes, durante y después del taller de SEL indicaron un cambio positivo en el conocimiento esencial de los maestros sobre el SEL después de la participación en el taller; sin embargo, no se observaron cambios en las percepciones de los maestros sobre su rol en la implementación de SEL. En este artículo de investigación se discuten los desafíos y las implicaciones futuras para una integración efectiva de SEL

Impact of a dexmedetomidine intravenous infusion in septic dogs: preliminary study

Sepsis represents an increasing health emergency both in human and veterinary medicine Dexmedetomidine is an alpha-2 agonist drug with sedative and analgesic properties recently used critically ill patient in human ICU. The purpose of this work was to evaluate hemodynamics effects of a continuous infusion of dexmedetomidine in septic dogs

Ecuadorian and Uruguayan Teachers’ Perceptions and Experiences of Teaching Online during COVID

This author accepted manuscript is deposited under a Creative Commons Attribution Non-commercial 4.0 International (CC BY-NC) license. This means that anyone may distribute, adapt, and build upon the work for non-commercial purposes, subject to full attribution. If you wish to use this manuscript for commercial purposes, please contact [email protected]: The COVID-19 pandemic is a unique event that forced K-12 schools to rethink the delivery of instruction to protect the well-being of school system stakeholders. Teachers, school administrators, and parents had to adapt to and embrace new ways of teaching and learning by utilizing available technology. The purpose of this study was to examine the challenges encountered by in-service teachers when moving from face-to-face to online teaching. Design/methodology/approach: This study utilized a qualitative phenomenological research methodology to examine Ecuadorian and Uruguayan teachers’ perceptions and experiences transitioning from face-to-face to online teaching during the COVID-19 pandemic. This comparative study used convenience sampling to include 12 K-12 teachers from Ecuador and Uruguay. Findings: The results of this study produced two themes that evidenced the demands placed on educators. The first theme was job demands, relating to teachers’ perceptions about workload, preparation time, and curriculum issues. The second theme related to available support provided by the school administrators and technology issues faced by teachers and students. Even though the teachers demonstrated adaptability for educating students during the pandemic, the experiences from both countries should be considered by teacher training programs and in postgraduate professional development. Originality: This article examined how COVID-19 affected teachers in Uruguay and Ecuador. Data analysis documented the challenges encountered by teachers transitioning to online learning during the pandemic. Findings inform a larger audience about the needs of teachers working online

Crystal Polymorph Selection Mechanism of Hard Spheres Hidden in the Fluid

Nucleation plays a critical role in the birth of crystals and is associated with a vast array of phenomena, such as protein crystallization and ice formation in clouds. Despite numerous experimental and theoretical studies, many aspects of the nucleation process, such as the polymorph selection mechanism in the early stages, are far from being understood. Here, we show that the hitherto unexplained excess of particles in a face-centered-cubic (fcc)-like environment, as compared to those in a hexagonal-close-packed (hcp)-like environment, in a crystal nucleus of hard spheres can be explained by the higher order structure in the fluid phase. We show using both simulations and experiments that in the metastable fluid phase, pentagonal bipyramids, clusters with fivefold symmetry known to be inhibitors of crystal nucleation, transform into a different cluster, Siamese dodecahedra. These clusters are closely similar to an fcc subunit, which explains the higher propensity to grow fcc than hcp in hard spheres. We show that our crystallization and polymorph selection mechanism is generic for crystal nucleation from a dense, strongly correlated fluid phase

Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which the proton form factors can be determined is estimated. The signal channel $\bar p p \to e^+ e^-$ is studied on the basis of two different but consistent procedures. The suppression of the main background channel, $\textit{i.e.}$ $\bar p p \to \pi^+ \pi^-$, is studied. Furthermore, the background versus signal efficiency, statistical and systematical uncertainties on the extracted proton form factors are evaluated using two different procedures. The results are consistent with those of a previous simulation study using an older, simplified framework. However, a slightly better precision is achieved in the PandaRoot study in a large range of momentum transfer, assuming the nominal beam conditions and detector performance

Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|$\eta$|<0.8) and transverse momentum range 0.2< $p_{\rm T}$< 5.0 GeV/$c$. The elliptic flow signal v$_2$, measured using the 4-particle correlation method, averaged over transverse momentum and pseudorapidity is 0.087 $\pm$ 0.002 (stat) $\pm$ 0.004 (syst) in the 40-50% centrality class. The differential elliptic flow v$_2(p_{\rm T})$ reaches a maximum of 0.2 near $p_{\rm T}$ = 3 GeV/$c$. Compared to RHIC Au-Au collisions at 200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase.Comment: 10 pages, 4 captioned figures, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/389

Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets

This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their anticipated performance. It precedes the tender and procurement of the magnets and, hence, is subject to possible modifications arising during this process.Comment: 10 pages, 14MB, accepted by FAIR STI in May 2009, editors: Inti Lehmann (chair), Andrea Bersani, Yuri Lobanov, Jost Luehning, Jerzy Smyrski, Technical Coordiantor: Lars Schmitt, Bernd Lewandowski (deputy), Spokespersons: Ulrich Wiedner, Paola Gianotti (deputy

Two-pion Bose-Einstein correlations in central Pb-Pb collisions at sNN\sqrt{s_{\rm NN}} = 2.76 TeV

The first measurement of two-pion Bose-Einstein correlations in central Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV at the Large Hadron Collider is presented. We observe a growing trend with energy now not only for the longitudinal and the outward but also for the sideward pion source radius. The pion homogeneity volume and the decoupling time are significantly larger than those measured at RHIC.Comment: 17 pages, 5 captioned figures, 1 table, authors from page 12, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/388

Suppression of charged particle production at large transverse momentum in central Pb-Pb collisions at sNN=2.76\sqrt{s_{\rm NN}} = 2.76 TeV

Inclusive transverse momentum spectra of primary charged particles in Pb-Pb collisions at $\sqrt{s_{_{\rm NN}}}$ = 2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented for central and peripheral collisions, corresponding to 0-5% and 70-80% of the hadronic Pb-Pb cross section. The measured charged particle spectra in $|\eta|<0.8$ and $0.3 < p_T < 20$ GeV/$c$ are compared to the expectation in pp collisions at the same $\sqrt{s_{\rm NN}}$, scaled by the number of underlying nucleon-nucleon collisions. The comparison is expressed in terms of the nuclear modification factor $R_{\rm AA}$. The result indicates only weak medium effects ($R_{\rm AA} \approx$ 0.7) in peripheral collisions. In central collisions, $R_{\rm AA}$ reaches a minimum of about 0.14 at $p_{\rm T}=6$-7GeV/$c$ and increases significantly at larger $p_{\rm T}$. The measured suppression of high-$p_{\rm T}$ particles is stronger than that observed at lower collision energies, indicating that a very dense medium is formed in central Pb-Pb collisions at the LHC.Comment: 15 pages, 5 captioned figures, 3 tables, authors from page 10, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/98