Intersección entre la alfabetización en información y las políticas públicas educativas: formando una ciudadanía crítica y autónoma en el manejo de la información

This research is based on the premise that the Uruguayan Educational System does not provide individuals sufficient tools to acquire skills and competencies in the management of information, being that one of the reasons that explain the difficulties to improve the levels of academic performance of the students. It seeks to justify that the inclusion of Information Literacy into the Educational Public Policies, that guide the Uruguayan Educational System, would contribute to solve the identified problem, since, the Information Literacy is the process by which the students could acquire the information tools that are necessary to have a good information management, adopting a critical stance toward it, and achieving more autonomy. In this way, the student would be more able to graduate from the Educational System, being a citizen more suitable for the decision-making and to exercise the full enjoyment of their rights. It considered that a citizenship with these characteristics possess the ability to deal with the social problems in a more conscious and responsible way, collaborating with the contraction of a more just and egalitarian society. To achieve the above stated objective, the research was developed with a purely qualitative and analytical deductive methodology, in which was elaborated a conceptual framework with great bibliographical support, with the development of the key research concepts by the research team. After that, a set of interviews were held with qualified informants in each of the themes that are treated in the development of this research. Reinforcing these interviews was made a focus group in which participated only actors that make up the Uruguayan Educational System from various roles (students, teachers, authorities, etc.) that facilitated the establishment of the status of situation of that system from all the possible perspectives, Developed these three instances of the investigation, was carried up a theoretical discussion of the problem identified and the proposal established to contribute to solve it, nurturing that discussion with theoretical concepts and the testimonies gathered in the previous stages of the research. After that, were settled some conclusions and reflections that confirm the hypothesis raised by the research team and consequently the achieving of the objectives that were established by him. Finally were exposed some recommendations taking into account the results obtain. Concluding that, indeed, the inclusion of Information Literacy in Educational Public Policies that rules the Uruguayan Education System would contribute to improve the educational performance of students, since that would give them the necessary tools to develop skills and competencies in the information management, which also will favour his development within society

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s = 7 TeV pp collisions with the ATLAS detector

A search for the direct production of charginos and neutralinos in final states with three electrons or muons and missing transverse momentum is presented. The analysis is based on 4.7 fb−1 of proton–proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with Standard Model expectations in three signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric models and in simplified models, significantly extending previous results

Jet size dependence of single jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector at the LHC

Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.Comment: 15 pages plus author list (30 pages total), 8 figures, 2 tables, submitted to Physics Letters B. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2011-02

Track reconstruction and matching between emulsion and silicon pixel detectors for the SHiP-charm experiment

In July 2018 an optimization run for the proposed charm cross section measurement for SHiP was performed at the CERN SPS. A heavy, moving target instrumented with nuclear emulsion films followed by a silicon pixel tracker was installed in front of the Goliath magnet at the H4 proton beam-line. Behind the magnet, scintillating-fibre, drift-tube and RPC detectors were placed. The purpose of this run was to validate the measurement's feasibility, to develop the required analysis tools and fine-tune the detector layout. In this paper, we present the track reconstruction in the pixel tracker and the track matching with the moving emulsion detector. The pixel detector performed as expected and it is shown that, after proper alignment, a vertex matching rate of 87% is achieved.Peer Reviewe