Astronomía ConTacto: Una Estrategia para la Divulgación de la Astronomía entre Personas con Discapacidad Visual

Due to the large distances, the sense of vision is the main tool available to the observer to contemplate astronomical phenomena, this fact represents a disadvantage for people with visual limitations. Given the above, this work presents the development of a strategy that takes activities from the Sun, the planets, the minor bodies and the Moon, and allows to communicate astronomy to people with different types of visual disability. The methodology focuses on the presentation of morphological characteristics, physical principles and astronomical phenomena that take place in the Solar System. The strategy was applied during four sessions to a sample composed of 15 people in blindness condition and 15 with low vision of the city of Pereira, Colombia. The assessment made was a significant increase in the percentage of the questions posed, which shows the effectiveness of the strategy developed.Debido a las enormes distancias, el sentido de la visión es la principal herramienta con la que cuenta el observador para contemplar los fenómenos astronómicos, lo que representa una desventaja para las personas con limitaciones visuales. Dado lo anterior, este artículo presenta el desarrollo de una estrategia que a partir de actividades alrededor del Sol, los planetas, los cuerpos menores y la Luna, permite comunicar la astronomía a personas con diferentes tipos de discapacidad visual. La metodología se enfoca en la representación de características morfológicas, principios físicos y fenómenos astronómicos que tienen lugar en el Sistema Solar. La estrategia fue aplicada durante cuatro sesiones a una muestra compuesta por 15 personas en condición de ceguera y 15 con baja visión en la ciudad de Pereira, Colombia. La valoración realizada mostró un incremento significativo del porcentaje de acierto a las preguntas planteadas, lo cual evidenció la efectividad de la estrategia desarrollada

Contribución al desarrollo social a través de la extensión universitaria

La Universidad Tecnológica de Pereira (UTP), a través de la Vicerrectoría de Investigaciones Innovación y Extensión, busca promover la extensión universitaria como una estrategia que permite el intercambio, la aplicación y la integración del conocimiento científico, tecnológico, artístico y cultural; al igual que la vinculación con la realidad social, cultural, económica y productiva de la región y del país, al darle valor a las capacidades institucionales y al generar una articulación e integración entre la docencia y la investigación, la cual permita la identificación de problemáticas y la propuesta de alternativas de solución; además de las oportunidades en el sector externo para realizar intervenciones y alianzas que conduzcan a fortalecer y aportar al desarrollo económico, cultural y el bienestar de la comunidad en general. En este sentido, para el año 2018 se ofertó, a los miembros de la comunidad universitaria, la «Convocatoria interna para la financiación de proyectos de extensión social, cultural y artístico» cuya ejecución se realizaría en el año 2019 y cuyo objetivo era fomentar el desarrollo de proyectos de carácter social, cultural, artístico, los cuales permitieran la solución y transformación de problemáticas que involucraran o beneficiaran sectores de diferentes comunidades. En esta convocatoria fueron financiados catorce proyectos que involucran a diferentes estamentos de la sociedad civil en torno al planteamiento y a la discusión de problemáticas, conflictos y sus posibles soluciones, así como a la identificación de oportunidades de progresos tecnológicos, ambientales, educativos o de creación artística, los cuales involucren o beneficien sectores de diferentes comunidades

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

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.

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

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

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