Generations No.9: The UNAB children's orchestra

Hacer parte del grupo de 38 Instituciones de Educación Superior (IES) con Acreditación de Alta Calidad de un total de 288 en el país, es fruto de un trabajo arduo y minucioso a lo largo del tiempo, basado en la premisa fundamental de ofrecer estándares de excelencia en la educación, y formar ciudadanos con capacidades profesionales que contribuyan al desarrollo de la sociedad. Ustedes, graduados UNAB, como parte de ese grupo de profesionales, son además de nuestro orgullo, una de las razones por la cuales este año iniciamos nuevamente el proceso de Autoevaluación con miras a la renovación de la Acreditación Institucional y alcanzarla por segunda vez, será una recompensa a la gratificante misión educativa que ha consolidado la UNAB por más de 60 años en la región.Editorial; Por Alberto Montoya Puyana…3 Lenguaje musical que une la ciudad; Por Redacción Generaciones UNAB…4 La voz del graduado…7 Nuevo convenio con trabajando.com; Por Luz Yaqueline Hernández Castañeda…8 En busca de renovar la Acreditación Institucional; Por Redacción Generaciones UNAB…10 “Contrapunto en la rivera y en la montaña”; Por Carlos Ernesto Acosta Posada…14 Desafíos para el ejercicio de la salud pública; Por Rafael Pérez Rincón…17 Logística: Ventaja competitiva para el éxito; Por Victoria Andrea Sarmiento Gómez…21 La investigación en el campo musical; Por Johanna Calderón Ochoa…24 Emprendimiento hecho en Santander; Por Redacción Generaciones UNAB…27 Graduados destacados; Por Redacción Generaciones UNAB…30 Generaciones en cifras; Por Redacción Generaciones UNAB…37 Mercadeo Institucional; Por Redacción Generaciones UNAB…38 Noticias breves…40 Encuentros…42Being part of the group of 38 Higher Education Institutions (IES) with High Quality Accreditation out of a total of 288 in the country, is the result of arduous and meticulous work over time, based on the fundamental premise of offering standards of excellence in education, and train citizens with professional skills that contribute to the development of society. You, UNAB graduates, as part of this group of professionals, are also our pride, one of the reasons why this year we started the Self-Assessment process again with a view to renewing Institutional Accreditation and achieving it for the second time, will be a reward for the gratifying educational mission that UNAB has consolidated for more than 60 years in the region

Gestión del conocimiento. Perspectiva multidisciplinaria. Volumen 7

El libro “Gestión del Conocimiento. Perspectiva Multidisciplinaria”, volumen 7, de la Colección Unión Global, es resultado de investigaciones. Los capítulos del libro, son resultados de investigaciones desarrolladas por sus autores. El libro es una publicación internacional, seriada, continua, arbitrada de acceso abierto a todas las áreas del conocimiento, que cuenta con el esfuerzo de investigadores de varios países del mundo, orientada a contribuir con procesos de gestión del conocimiento científico, tecnológico y humanístico que consoliden la transformación del conocimiento en diferentes escenarios, tanto organizacionales como universitarios, para el desarrollo de habilidades cognitivas del quehacer diario. La gestión del conocimiento es un camino para consolidar una plataforma en las empresas públicas o privadas, entidades educativas, organizaciones no gubernamentales, ya sea generando políticas para todas las jerarquías o un modelo de gestión para la administración, donde es fundamental articular el conocimiento, los trabajadores, directivos, el espacio de trabajo, hacia la creación de ambientes propicios para el desarrollo integral de las instituciones

Study on multi-ELVES in the Pierre Auger Observatory

Since 2013, the four sites of the Fluorescence Detector (FD) of the Pierre Auger Observatory record ELVES with a dedicated trigger. These UV light emissions are correlated to distant lightning strikes. The length of recorded traces has been increased from 100 μs (2013), to 300 μs (2014-16), to 900 μs (2017-present), to progressively extend the observation of the light emission towards the vertical of the causative lightning and beyond. A large fraction of the observed events shows double ELVES within the time window, and, in some cases, even more complex structures are observed. The nature of the multi-ELVES is not completely understood but may be related to the different types of lightning in which they are originated. For example, it is known that Narrow Bipolar Events can produce double ELVES, and Energetic In-cloud Pulses, occurring between the main negative and upper positive charge layer of clouds, can induce double and even quadruple ELVES in the ionosphere. This report shows the seasonal and daily dependence of the time gap, amplitude ratio, and correlation between the pulse widths of the peaks in a sample of 1000+ multi-ELVES events recorded during the period 2014-20. The events have been compared with data from other satellite and ground-based sensing devices to study the correlation of their properties with lightning observables such as altitude and polarity

A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality

The Pierre Auger Observatory is the most sensitive detector to primary photons with energies above ∼0.2 EeV. It measures extensive air showers using a hybrid technique that combines a fluorescence detector (FD) with a ground array of particle detectors (SD). The signatures of a photon-induced air shower are a larger atmospheric depth at the shower maximum (X$_{max}$) and a steeper lateral distribution function, along with a lower number of muons with respect to the bulk of hadron-induced background. Using observables measured by the FD and SD, three photon searches in different energy bands are performed. In particular, between threshold energies of 1-10 EeV, a new analysis technique has been developed by combining the FD-based measurement of X$_{max}$ with the SD signal through a parameter related to its muon content, derived from the universality of the air showers. This technique has led to a better photon/hadron separation and, consequently, to a higher search sensitivity, resulting in a tighter upper limit than before. The outcome of this new analysis is presented here, along with previous results in the energy ranges below 1 EeV and above 10 EeV. From the data collected by the Pierre Auger Observatory in about 15 years of operation, the most stringent constraints on the fraction of photons in the cosmic flux are set over almost three decades in energy

Extraction of the Muon Signals Recorded with the Surface Detector of the Pierre Auger Observatory Using Recurrent Neural Networks

We present a method based on the use of Recurrent Neural Networks to extract the muon component from the time traces registered with water-Cherenkov detector (WCD) stations of the Surface Detector of the Pierre Auger Observatory. The design of the WCDs does not allow to separate the contribution of muons to the time traces obtained from the WCDs from those of photons, electrons and positrons for all events. Separating the muon and electromagnetic components is crucial for the determination of the nature of the primary cosmic rays and properties of the hadronic interactions at ultra-high energies. We trained a neural network to extract the muon and the electromagnetic components from the WCD traces using a large set of simulated air showers, with around 450 000 simulated events. For training and evaluating the performance of the neural network, simulated events with energies between 1018.5, eV and 1020 eV and zenith angles below 60 degrees were used. We also study the performance of this method on experimental data of the Pierre Auger Observatory and show that our predicted muon lateral distributions agree with the parameterizations obtained by the AGASA collaboration