Methodology for the modelamiento of information based on big data, focused on the consumption of traffic (voice - information) generated by the clients

El presente trabajo demuestra los lineamientos para la aplicación de Big Data enfocado en el consumo de tráfico de Voz y Datos originado por los clientes en una compañía del sector de telecomunicaciones. Como resultado final se busca generar estrategias comerciales en tiempo real. Entendemos por Big Data como un conjunto de técnicas y tecnologías para el tratamiento y almacenamiento de datos, en entornos de gran volumen, variedad de orígenes y en los que la velocidad de respuesta es crítica. Así mismo conoceremos el concepto y la aplicación de las 5V’s que componen la tecnología Big Data (Velocidad, Veracidad, Variedad, Volumen, Valor). La implementación se realizará a través de dos Software, uno para el almacenamiento y procesamiento de información Hadoop y otro para la parte visual y análisis como lo es Tableau. Como entregables principales en la metodología propuesta tenemos definir el Tipo Cliente, generar sus Consumos en tiempo determinado y por ultimo las Estrategias Comerciales.The present work demonstrates the limits for Big Data's application focused in the consumption of traffic of Voice and Information originated by the clients in a company of the sector of telecommunications. As final result one seeks to generate commercial real time strategies. We understand for Big Data as a set of technologies and technologies for the treatment and storage of information, in environments of great volume, variety of origins and in that the speed of response is critical. Likewise we will know the concept and the application of them 5V's that compose the technology Big Data (Speed, Veracity, Variety, Volume, Value). The implementation will realize across two Software, one for the storage and processing of information Hadoop and other one for the visual part and analysis like it is Tableau. Since deliverable principal in the proposed methodology we have to define the Type Client, generate his Consumptions in certain time and finally the Commercial Strategies

Spatiotemporal Stacked Sequential Learning for Pedestrian Detection

Pedestrian classifiers decide which image windows contain a pedestrian. In practice, such classifiers provide a relatively high response at neighbor windows overlapping a pedestrian, while the responses around potential false positives are expected to be lower. An analogous reasoning applies for image sequences. If there is a pedestrian located within a frame, the same pedestrian is expected to appear close to the same location in neighbor frames. Therefore, such a location has chances of receiving high classification scores during several frames, while false positives are expected to be more spurious. In this paper we propose to exploit such correlations for improving the accuracy of base pedestrian classifiers. In particular, we propose to use two-stage classifiers which not only rely on the image descriptors required by the base classifiers but also on the response of such base classifiers in a given spatiotemporal neighborhood. More specifically, we train pedestrian classifiers using a stacked sequential learning (SSL) paradigm. We use a new pedestrian dataset we have acquired from a car to evaluate our proposal at different frame rates. We also test on a well known dataset: Caltech. The obtained results show that our SSL proposal boosts detection accuracy significantly with a minimal impact on the computational cost. Interestingly, SSL improves more the accuracy at the most dangerous situations, i.e. when a pedestrian is close to the camera.Comment: 8 pages, 5 figure, 1 tabl

Comparative analysis between different design methodologies for implementing the structures of pavement design parameters required for the corridor Mulaló - Loboguerrero

En este documento se hace un análisis comparativo de los resultados obtenidos en las diferentes metodologías de diseño para estructuras de pavimento, estos diseños se ejecutaron a partir de especificaciones y criterios de diseño que fueron iguales para todas las metodologías, esto con el fin de establecer las diferencias entre los espesores obtenidos al ejecutarse el diseño. Por fines prácticos se tomaron para el diseño de la estructura de pavimento, los criterios de diseño especificados en el pliego de condiciones generados por la Agencia Nacional de Infraestructura para la concesión en el corredor entre Mulaló y Loboguerrero en el departamento del Valle del Cauca. Las metodologías de diseño con las cuales se hizo la comparación para pavimentos flexibles son AASHTO-93 y Racional, y para pavimentos rígidos PCA, AASHTO-93 y Manual de diseño de Pavimentos-INVIAS. Luego de desarrollar las metodologías de diseño, se hizo una comparación del dimensionamiento de cada estructura, con el fin de establecer las diferencias en cuanto al espesor que cada metodología de diseño establece, adicionalmente se evaluó la influencia que las variables tuvieron en cada metodología para el dimensionamiento de las estructuras.In this paper a comparative analysis of the results of the different design methodologies for pavement structures is made, these designs are executed from specifications and design criteria were the same for all methodologies, this in order to establish the differences between thicknesses obtained while performing design. For practical purposes were taken to the design of the pavement structure, the design criteria specified in the specifications generated by the Agencia Nacional de Infraestructura for the concession in the corridor between Mulaló and Loboguerrero in the department of Valle del Cauca. Design methodologies with which the comparison was made for flexible pavements are AASHTO-93 and Rational, and for rigid pavements, PCA, AASHTO-93 and the pavement design manual-INVIAS. After developing the design methodologies, a comparison was made of the dimensioning of each structure, in order to establish the differences in thickness that each set design methodology, is further influenced variables were evaluated in each methodology for dimensioning of the structures

Efecto de la confianza en la lealtad y el eWOM en las comunidades virtuales de marca.

La confianza en la marca y en la Comunidad Virtual de Marca (CVM) pueden contribuir a la generación de lealtad a la marca y eWOM positivo. Sin embargo, no han sido muchos los estudios empíricos que han incluido ambos tipos de confianza en la evaluación de los resultados de las CVM. Por lo tanto, este trabajo tiene como objetivo explorar cómo la confianza en la marca y la confianza en la comunidad influyen en la lealtad y en el eWOM. Para ello se emplearon datos procedentes de una encuesta realizada a usuarios de CVM que fueron analizados mediante la técnica PLS. Los resultados confirman que la confianza en la marca influye en la lealtad y en el eWOM tanto directamente, como indirectamente a través de la confianza en la CVM. Además, la lealtad favorece la generación de eWOM. Las implicaciones para la práctica de marketing son comentadas.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Extended Lyα\alpha emission around quasars with eclipsing damped Lyα\alpha systems

We present spectroscopic observations of six high redshift ($z_{\rm em}$ $>$ 2) quasars, which have been selected for their Lyman $\alpha$ (Ly$\alpha$) emission region being only partially covered by a strong proximate ($z_{\rm abs}$ $\sim$ $z_{\rm em}$) coronagraphic damped Ly$\alpha$ system (DLA). We detected spatially extended Ly$\alpha$ emission envelopes surrounding these six quasars, with projected spatial extent in the range 26 $\le$ $d_{\rm Ly\alpha}$ $\le$ 51 kpc. No correlation is found between the quasar ionizing luminosity and the Ly$\alpha$ luminosity of their extended envelopes. This could be related to the limited covering factor of the extended gas and/or due to the AGN being obscured in other directions than towards the observer. Indeed, we find a strong correlation between the luminosity of the envelope and its spatial extent, which suggests that the envelopes are probably ionized by the AGN. The metallicity of the coronagraphic DLAs is low and varies in the range $-$1.75 $<$ [Si/H] $<$ $-$0.63. Highly ionized gas is observed to be associated with most of these DLAs, probably indicating ionization by the central AGN. One of these DLAs has the highest AlIII/SiII ratio ever reported for any intervening and/or proximate DLA. Most of these DLAs are redshifted with respect to the quasar, implying that they might represent infalling gas probably accreted onto the quasar host galaxies through filaments.Comment: Accepted for publication in MNRAS, 27 pages, 19 figures, 6 table

The long bar as seen by the VVV Survey: II. Star counts

Context: There is still some debate about the presence and the morphological properties of the long bar in the inner Galaxy. Aims: We investigate the morphological properties of the long Galactic bar using the VVV survey extending star counts at least 3 mag deeper than 2MASS. Our study covers the relatively unexplored negative longitudes of the Galactic bar. We obtain a detailed description of the spatial distribution of star counts towards the long Galactic bar as well as to measure its parameters. Methods: We performed star counts towards -20<l<0 deg., |b|< 2 deg. using VVV, 2MASS, and GLIMPSE data. We applied an average interstellar extinction correction. We also adjusted latitudinal profiles to obtain the centroid variation and bar thickness. Results: We probe the structure of long Galactic bar, as well as its far edge at l=-14 deg. The differences between counts with and without extinction correction allow us to produce a crude extinction map showing regions with high extinction, mainly beyond the end of long Galactic bar. The latitudinal profiles show evidence of the centroid vertical variation with Galactic longitude reaching a minimum at l=-13.8 deg. The bar has an inclination angle 43+/-5 deg with respect to the line Sun-Galactic center. In addition, we have determined the bar parameters, such as thickness, length, and stellar distribution.Comment: Accepted for publication at Astronomy \& Astrophysics (17 pages, 17 figures). Second version: 1- Only minor changes on the abstract of the manuscript. 2- Abstract of arXiv.org modified to be in accordingly to Astronomy & Astrophysics abstract structur

Análisis de la participación de la comunidad local en el proceso de valoración del patrimonio industrial minero de Lota (1997-2021)

A presente investigação aborda o processo de valorização do patrimônio industrial mineiro do município de Lota no período compreendido entre o Plano de Reconversão Laboral de 1997 até a candidatura do Complexo Mineiro da Lota à Lista Tentativa da UNESCO no início de 2021. Este intervalo de tempo permitiu estudar uma série de estratégias implementadas pelo Estado e outros atores e compreender a incidência da comunidade no processo de revitalização experimentado pela comunidade. O objetivo do estudo foi analisar essas estratégias com o intuito de obter uma análise comparativa dos propósitos e usos que prevalecem para cada tipo de ator, de acordo com os postulados e paradigmas sobre os usos sociais do patrimônio cultural. Para isso, utilizou-se a abordagem e as ferramentas da Análise Crítica do Discurso aplicadas a diferentes fontes documentais. As estratégias e ações de valorização do patrimônio que surgiram após o fechamento das minas de Lota, foram desenvolvidas, em princípio, de forma vertical: de uma autoridade para baixo. No entanto, ao longo do processo de avaliação do patrimônio uma série de instâncias são estabelecidas, por meio das quais a comunidade local começa a influenciar a gestão integrada dos componentes do sítio. Desta forma, os resultados da pesquisa revelam uma tendência a uma relação horizontal entre os diferentes atores envolvidos no processo de salvaguarda, a partir de uma abordagem participativa que contempla a participação da comunidade local.La investigación expuesta aborda el proceso de puesta en valor del patrimonio industrial minero de Lota, en el período comprendido entre el Plan de Reconversión Laboral de 1997 hasta la postulación del Conjunto Minero de Lota a la Lista Tentativa de UNESCO a inicios de 2021. Este rango temporal permitió estudiar una serie estrategias implementadas por parte del Estado, y otros actores, y comprender la incidencia de la comunidad en el proceso de revitalización que experimenta la comuna. El objetivo del estudio consistió en analizar dichas estrategias, de manera de obtener una comparativa respecto de los fines y usos que priman para cada tipo de actor, acorde a los postulados y paradigmas sobre los usos sociales del patrimonio cultural. Para ello se utilizó el enfoque y herramientas propios del Análisis Crítico del Discurso aplicado sobre distintas fuentes documentales. Las estrategias y acciones de valorización patrimonial que surgen a partir del cierre de las minas en Lota, se desarrollaron, en principio, de manera vertical: desde una autoridad hacia abajo. Sin embargo, a lo largo del proceso de valoración patrimonial, se establecen una serie de instancias a través de las cuales la comunidad local comienza a influir en la gestión integral de los componentes del sitio. De esta manera, los resultados de la investigación revelan una tendencia hacia una relación horizontal entre los distintos actores involucrados en el proceso de salvaguardia, desde un enfoque participacionista que contempla la participación de la comunidad local.This research addresses the process to enhance Lota’s industrial mining heritage, in the period between the Labor Reconversion Plan of 1997 and Lota Mining Complex’s application to UNESCO’s Tentative List at the beginning of 2021. This period allowed studying a series of strategies implemented by the State together with other actors, as well as understanding the involvement of the community in the commune’s revitalization process. The purpose of the research was to analyze these strategies, to make a comparison regarding the prevailing purposes and uses for each type of actor, according to the hypotheses and paradigms on the social uses of cultural heritage. To do this, the Critical Discourse Analysis approach and tools were applied to different documentary sources. The heritage valuation strategies and actions that emerge from the closure of the mines in Lota, were initially developed top-down, starting from the authorities. However, throughout the heritage valuation process, a series of instances are established where the local community begins to influence the comprehensive management of the site's components. In this way, the results of the research reveal a trend toward a horizontal relationship between the different actors involved in the safeguarding process, from a participatory approach that contemplates the involvement of the local community

Arrow-shaped elasto-inertial rotating waves.

We present direct numerical simulations of the Taylor– Couette flow of a dilute polymer solution when only the inner cylinder rotates and the curvature of the system is moderate (η = 0.77). The finitely extensible nonlinear elastic-Peterlin (FENE-P) closure is used to model the polymer dynamics. The simulations have revealed the existence of a novel elastoinertial rotating wave characterized by arrow-shaped structures of the polymer stretch field aligned with the streamwise direction. This rotating wave pattern is comprehensively characterized, including an analysis of its dependence on the dimensionless Reynolds and Weissenberg numbers. Other flow states having arrow-shaped structures coexisting with other types of structures have also been identified for the first time in this study and are briefly discussed.Ministerio de Ciencia e Innovación proyectos PID2019-105162RB-I00 and PID2020-114043GB-10

Arrow-shaped elasto-inertial rotating waves

We present direct numerical simulations of the Taylor–Couette flow of a dilute polymer solution when only the inner cylinder rotates and the curvature of the system is moderate (¿=0.77 ). The finitely extensible nonlinear elastic-Peterlin closure is used to model the polymer dynamics. The simulations have revealed the existence of a novel elasto-inertial rotating wave characterized by arrow-shaped structures of the polymer stretch field aligned with the streamwise direction. This rotating wave pattern is comprehensively characterized, including an analysis of its dependence on the dimensionless Reynolds and Weissenberg numbers. Other flow states having arrow-shaped structures coexisting with other types of structures have also been identified for the first time in this study and are briefly discussed. This article is part of the theme issue ‘Taylor–Couette and related flows on the centennial of Taylor’s seminal Philosophical Transactions paper (part 2)’.Postprint (author's final draft

Estimación de estados de un sistema de potencia a partir de la aplicación del método de regularización dinámico de Tikhonov

La estimación de estados es el proceso mediante el cual se asigna un valor a una variable de estado del sistema, basado en mediciones sobre ese sistema y alg ún criterio determinado. Por lo general, este proceso involucra un conjunto imperfecto y redundante de medidas y el criterio utilizado para el c álculo de las variables de estado consiste en minimizar alguna funci ón estadí stica. El estimador de estado del sistema de potencia juega un papel importante en los sistemas de manejo de energ ía para proporcionar la mejor estimaci ón posible de los estados del sistema procesando el conjunto de mediciones recogidas durante un intervalo de tiempo