El universo musical mexicano entre centenarios (1517-1917): una introducción

8 páginas.Capítulo incluido en el libro: De Nueva España a México: el universo musical mexicano entre centenarios (1517-1917). Javier Marín-López (ed. lit.). Sevilla, Universidad Internacional de Andalucía, 2020. Pags.: 25-31. Enlace: http://hdl.handle.net/10334/538

Polifonías litúrgicas en el mundo atlántico colonial: los Riscos

Hacia finales del siglo XVI, la circulación de repertorios musicales hispanos en el espacio atlántico había alcanzado un notable nivel de intensidad. Sin embargo, los estudios disponibles se centran por lo general en el envío de música desde la metrópoli hacia puntos concretos del Nuevo Mundo, ignorando redes internas de intercambio entre virreinatos y circulaciones en sentido inverso, de América hacia España. Este trabajo aspira a proporcionar nuevas evidencias y perspectivas a través de un estudio de caso del siglo XVII que vincula el Virreinato de Nueva España (México) y el Nuevo Reino de Granada (Colombia), integrado entonces en el Virreinato del Perú. En una primera sección se ofrece un panorama de los repertorios polifónicos compartidos por instituciones eclesiásticas de ambos territorios. La segunda parte tiene como protagonista a los Riscos, un conjunto de músicos que compartieron apellido y, en algún caso, también nombre de pila, espacio geográfico y cronología. Tras recopilar e interpretar información dispersa y desambiguar sus biografías, la tercera sección explora las posibles vías de difusión de las obras de los Riscos conservadas en archivos de México, Colombia y España, así como las hipotéticas autorías de dicho repertorio. A partir de un amplio corpus de fuentes primarias y secundarias, este estudio permite conocer algunos de los posibles canales y redes multidireccionales que posibilitaron la circulación de repertorio polifónico a través del Atlántico, en ambas direcciones, y entre virreinatos

10 Gigabit White Rabbit: sub-nanosecond timing and data distribution

Time synchronization is a critical feature for many scientific facilities and industrial infrastructures. The required performance is progressively increasing everyday, for instance, few tens of nanoseconds for Fifth Generation (5G) networks or sub-nanosecond accuracy on next family of particle accelerators and astrophysics telescopes. Due to this exigent accuracy, many applications require specific timing dedicated networks, increasing the system cost and complexity. Under this context, the new IEEE 1588-2019 High Accuracy (HA) default profile is intensively based on White Rabbit (WR) which can provide sub-nanosecond accurate synchronization for Ethernet networks. However, current WR solutions have not been designed to work properly with high data bandwidth delivery services even in 1 Gigabit Ethernet (GbE) links. On this contribution, the authors propose a new architecture design that enables WR and, consequently, the IEEE 1588-2019 HA profile to be deployed over 10 GbE links solving the already identified data bandwidth problem. Furthermore, this work addresses different experiments needed to characterize the system performance in terms of time synchronization and data transfer. As final result, this contribution presents for the first time in the literature a new WR system which allows high bandwidth data exchange in 10 GbE networks while providing sub-nanosecond accuracy synchronization. The proposed solution maintains the time synchronization performance of existing WR 1 GbE devices with significant advantages in terms of latency and data bandwidth, enabling its deployment in applications that integrate data and synchronization information in the same network.European Union (EU) 725490H2020 ASTERICS 653477AMIGA7 RTI2018-096228-B-C3

¡Ay, qué dolor! (1701) de Antonio de Salazar: contextos para un villancico barroco transcrito por Manuel M. Ponce

22 páginas.Capítulo incluido en el libro: De Nueva España a México: el universo musical mexicano entre centenarios (1517-1917). Javier Marín-López (ed. lit.). Sevilla, Universidad Internacional de Andalucía, 2020. Pags.: 569-589. Enlace: http://hdl.handle.net/10334/538

Propuesta desarrollo del sistema de distribución en la cadena de abastecimiento y política de inventarios de Randys Ltda.

Ingeniero (a) IndustrialPregrad

Quemador poroso

Quemador poroso adaptado para ser alimentado con diferentes tipos de gases, que comprende un soporte que incluye un conducto a través del cual entra una mezcla de aire/gas en el quemador poroso, y una estructura cerámica, soportada por el soporte, que comprende una esponja inicialmente polimérica que se impregna con una barbotina, comprendiendo dicha barbotina al menos un material cerámico. La estructura cerámica tiene una porosidad final de entre aproximadamente 50 ppi hasta aproximadamente 70 ppi, y una densidad final de entre aproximadamente 0.45 hasta aproximadamente 0.65 g/cm3.Peer reviewedConsejo Superior de Investigaciones Científicas (España), P.I. Prosider Ibérica S.A, Ikerlan S COOPB1 Patente sin examen previ

Zarzuela y nación: una imagen de Aragón

La época de la Restauración fue un período clave en la conformación estructural de España. Mientras el país se hallaba inmerso en un proceso conservador de construcción nacional, Aragón fue incorporado de forma entusiasta y activa por sus propios intelectuales en el nuevo relato unificador. Su realidad social y cultural -a partir de entonces edulcorada- dio paso a una imagen costumbrista repleta de tópicos que, a través de las zarzuelas ambientadas en su territorio, se aceptaron, asimilaron y expandieron a lo largo y ancho de la nación. El baturrismo, la Virgen del Pilar y la jota se alzaron como las nuevas señas de identidad del Aragón idealizado, ejerciendo una influencia colosal cuyos efectos pueden extenderse incluso hasta la actualidad.<br /

A new definition of burnout syndrome based on Farber's proposal

<p>Abstract</p> <p>Background</p> <p>Although diverse definitions have been construed for burnout syndrome, most authors consider it to be a single phenomenon, the result of chronic work-related stress. However, in order to enable specific intervention strategies to be adopted, it is first necessary to establish different profiles for the syndrome. In this respect, have been proposed three burnout types ("frenetic", "underchallenged" and "worn-out"), each of which requires different means of dealing with frustration in the workplace. This study is an attempt to define and systematize the properties that characterize this typology proposal.</p> <p>Methods</p> <p>For this purpose, the documents considering preliminary typology were examined by means of qualitative content analysis supported by grounded theory. Semiotic analysis was then performed on the core category resulting from the previous analysis.</p> <p>Results</p> <p>A classification criterion, made up of three different burnout subtypes ("frenetic", "underchallenged", and "worn-out") capable of integrating the entire proposal was formulated.</p> <p>Discussion</p> <p>Understanding the development of burnout syndrome, as a succession of stages characterized by the progressive diminishing of dedication to work, could serve for the establishment of specific therapies and for the prevention of the syndrome.</p

Using one-dimensional modeling to analyse the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Detailed injection system model

A combined experimental and computational investigation has been performed in order to evaluate the influence of physical properties of biodiesel on the injection process in a common-direct injection system with second generation solenoid injectors. For that purpose, after a complete characterization of the system, which involved mechanical and hydraulic characterization, a one-dimensional model has been obtained and extensively validated. Simulations have then been performed with a standard diesel and a 100% rape methyl ester (RME) biodiesel which allowed a comparison and analysis of the dynamic response of the injector to be done. Different injection strategies involving main injection and main plus post-injection have been used to explore the impact of the use of biodiesel on the performance and stability of solenoid injectors. As far as the dynamic response of the injector is concerned, the results obtained have clearly shown that the use of biodiesel affects the dynamic response of the needle, especially at low injection pressures. The behavior of the system under multi-injection strategies (main plus post-injection) has been also evaluated determining for different operating conditions (injection pressures and backpressures) the minimum dwell time between injections to assure a stable behavior in the injection process (mass flow rate). Important differences have been found between biodiesel and standard diesel in this critical parameter at low injection pressures, becoming less important at high injection pressure. Finally, a modification on the injector hardware has been proposed in order to compensate these differences.This research has been funded by "Ministerio de Ciencia e Innovacion" in the frame of the project "Estudio teorico experimental de la influencia del combustible sobre la cavitacion y el desarrollo del chorro evaporative (FlexiFuel)", Reference TRA2010-17564.Payri Marín, R.; Salvador Rubio, FJ.; Marti Aldaravi, P.; Martínez López, J. (2012). Using one-dimensional modeling to analyse the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Detailed injection system model. Energy Conversion and Management. 54(1):90-99. https://doi.org/10.1016/j.enconman.2011.10.004S909954

Effect of turbulent model closure and type of inlet boundary condition on a Large Eddy Simulation of a non-reacting jet with co-flow stream

[EN] In this paper, the behavior and turbulence structure of a non-reacting jet with a co-flow stream is described by means of Large Eddy Simulations (LES) carried out with the computational tool OpenFoam. In order to study the influence of the sub-grid scale (SGS) model on the main flow statistics, Smagorinsky (SMAG) and One Equation Eddy (OEE) approaches are used to model the smallest scales involved in the turbulence of the jet. The impact of cell size and turbulent inlet boundary condition in resulting velocity profiles is analyzed as well. Four different tasks have been performed to accomplish these objectives. Firstly, the simulation of a turbulent pipe, which is necessary to generate and map coherent turbulence structure into the inlet of the non-reacting jet domain. Secondly, a structured mesh based on hexahedrons has been built for the jet and its co-flow. The third task consists on performing four different simulations. In those, mapping statistics from the turbulent pipe is compared with the use of fluctuating inlet boundary condition available in OpenFoam; OEE and SMAG approaches are contrasted; and the effect of changing cell size is investigated. Finally, as forth task, the obtained results are compared with experimental data. As main conclusions of this comparison, it has been proved that the fluctuating boundary condition requires much less computational cost, but some inaccuracies were found close to the nozzle. Also, both SGS models are capable to simulate this kind of jets with a co-flow stream with exactitude.This research was performed in the frame of the project "Estudio de la interaccion chorro-pared en condiciones realistas de motor" reference TRA2015-67679-c2-1-R from Ministerio de Economia y Competitividad (Spanish Ministry of Economy). The equipment used in this work has been partially supported by FEDER Project funds "Dotacion de infraestructuras cientifico tectinas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte (CiMeT), (FEDER-ICTS-2012-06)", framed in the operation program of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. Jhoan S. Giraldo was supported by a research grant from Generalitat Valenciana (Programa Santiago Grisolia, GRISOLIA/2013/007).Payri Marín, R.; López Sánchez, JJ.; Marti-Aldaravi, P.; Giraldo Valderrama, JS. (2016). Effect of turbulent model closure and type of inlet boundary condition on a Large Eddy Simulation of a non-reacting jet with co-flow stream. International Journal of Heat and Fluid Flow. 61:545-552. https://doi.org/10.1016/j.ijheatfluidflow.2016.06.016S5455526