Plataforma móvil con realidad aumentada para la enseñanza de los cálculos

The mobile applications have generated big impact in the society; have been applied in some areas of human interest. In this project take advantage of mobile applications with augmented reality (AR) for get better academic performance of the students and achieve a meaningful learning in the calculus courses. For its were analyzed the thematic contents of the calculus differential, integral and several variables and was developed a mobile platform in that log in to detailed information of the courses topics with examples and exercises. Also, has an interface for connecting with a web service, in that can solve high percent of calculus application, such as: limits, derivate, integrals. This allows show the graphics using the AR from markers based on the formal definitions of the functions. Finally, were applied test to students without use of the platform and then use, appreciate an improvement in the academic performance and learning of the topics. According to the above conclude that the use of the mobile application with augmented reality is relevant for the teaching of calculus.Las aplicaciones móviles han generado gran impacto en la sociedad, han sido aplicadas en múltiples áreas de interés humano. En este proyecto se aprovecharon las ventajas de las aplicaciones móviles con realidad aumentada (RA) para mejorar el rendimiento académico de los estudiantes y lograr un aprendizaje significativo en las asignaturas de cálculo. Para esto se analizaron los contenidos temáticos de los cursos de cálculo diferencial, integral y vectorial y se desarrolló una plataforma móvil en la que se accede a información detallada de los tópicos de las asignaturas con ejemplos y ejercicios. Además posee una interfaz para conectarse con un servicio web, que permite solucionar un alto porcentaje de aplicaciones del cálculo, tales como: límites, derivadas e integrales. Esta permite además mostrar las gráficas de funciones utilizando RA a partir de marcadores que son sus definiciones formales. Finalmente se aplicaron evaluaciones a estudiantes sin el uso de la plataforma y luego utilizándola, y se pudo apreciar una mejoría en los resultados académicos y en el aprendizaje de las temáticas. Teniendo en cuenta esto se concluye que el uso de aplicaciones móviles con realidad aumentada es relevante para la enseñanza de los cálculos

Modelo de implementación de TIC en el sector transporte de la ciudad de Barranquilla utilizando dinámica de sistemas

A través de la implementación de las tecnologías de la información y la comunicación, se pretende disminuir en gran medida los factores ocasionados por la inestabilidad en el sistema de transporte. El objetivo es diseñar un modelo del sector transporte de la ciudad de Barranquilla con implementación de TIC utilizando la dinámica de sistemas. Para el cumplimento de tal objetivo se utilizó la dinámica de sistemas como herramienta metodológica para interpretar las características del sistema en cuestión y así determinar las interacciones de sus factores y las estructuras que conforman el comportamiento organizacional y los procesos de gestión de producción de servicios. El modelo aplicado es el de gestión ya que las relaciones estructurales son los puntos fundamentales de la construcción del mismo, luego se propone la construcción de los diagramas causales o diagramas de Forrester los cuales son implementados en el software de simulación Vensim que permiten construir modelos a través de diagramas causales o en versión texto. Con la obtención de este modelo se propone un mejoramiento en la movilidad como solución de los trancones ocasionados por un fenómeno natural como los arroyos o por los ocasionados por las horas picos.Through the implementation of information technologies and communication, it is intended to greatly reduce the instability caused by factors in the transportation system. The goal is to design a model of the transport sector in the city of Barranquilla with ICT implementation using system dynamics. To fulfill this objective we used the system dynamics as a methodological tool to interpret the characteristics of the system in question and determine the interactions of its factors and structures that shape organizational behavior and processes of production management services. The model applied is the management and structural relations are the key points of its construction, then proposes the construction of causal diagrams or Forrester diagrams which are implemented in Vensim simulation software to build models that allow through causal diagrams or text version. By obtaining this model proposes an improvement in mobility as a solution to traffic jams caused by natural phenomena such as streams or those caused by the peak hours

Model implementation of ict in the sector of transportation in Barranquilla city using dynamic systems /

Universidad Autónoma del Carib

Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript −1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

Impacts of the Tropical Pacific/Indian Oceans on the Seasonal Cycle of the West African Monsoon

The current consensus is that drought has developed in the Sahel during the second half of the twentieth century as a result of remote effects of oceanic anomalies amplified by local land–atmosphere interactions. This paper focuses on the impacts of oceanic anomalies upon West African climate and specifically aims to identify those from SST anomalies in the Pacific/Indian Oceans during spring and summer seasons, when they were significant. Idealized sensitivity experiments are performed with four atmospheric general circulation models (AGCMs). The prescribed SST patterns used in the AGCMs are based on the leading mode of covariability between SST anomalies over the Pacific/Indian Oceans and summer rainfall over West Africa. The results show that such oceanic anomalies in the Pacific/Indian Ocean lead to a northward shift of an anomalous dry belt from the Gulf of Guinea to the Sahel as the season advances. In the Sahel, the magnitude of rainfall anomalies is comparable to that obtained by other authors using SST anomalies confined to the proximity of the Atlantic Ocean. The mechanism connecting the Pacific/Indian SST anomalies with West African rainfall has a strong seasonal cycle. In spring (May and June), anomalous subsidence develops over both the Maritime Continent and the equatorial Atlantic in response to the enhanced equatorial heating. Precipitation increases over continental West Africa in association with stronger zonal convergence of moisture. In addition, precipitation decreases over the Gulf of Guinea. During the monsoon peak (July and August), the SST anomalies move westward over the equatorial Pacific and the two regions where subsidence occurred earlier in the seasons merge over West Africa. The monsoon weakens and rainfall decreases over the Sahel, especially in August.Peer reviewe

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

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