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En este artículo se responden algunos interrogantes respecto del sujeto de la enunciación del complejo grupo cronístico colonial denominado “crónicas mestizas” a través del análisis de uno de sus textos más representativos, Relación de Texcoco (1582) del cronista mestizo texcocano Juan Bautista Pomar. Además de ser una crónica pocas veces abordada desde una perspectiva literaria, este texto, cuyo original se encuentra perdido y del que se conservan apenas algunos capítulos, es ejemplo de las tensiones y arbitrariedades que subyacen al archivo colonial latinoamericano.

There has been a increasing interest in understanding emotion regulation deficits in social anxiety disorder (SAD; e.g., Hofmann, Sawyer, Fang, & Asnaani, 2012). However, much remains to be understood about the patterns of associations among regulation strategies in the repertoire. Doing so is important in light of the growing recognition that peoples ability to flexibly implement strategies is associated with better mental health (e.g., Kashdan et al., 2014). Based on previous work (Aldao & Nolen-Hoeksema, 2012), we examined whether putatively adaptive and maladaptive emotion regulation strategies interacted with each other in the prediction of social anxiety symptoms in a sample of 71 participants undergoing CBT for SAD. We found that strategies interacted with each other and that this interaction was qualified by a three-way interaction with a contextual factor, namely treatment study phase. Consequently, these findings underscore the importance of modeling contextual factors when seeking to understand emotion regulation deficits in SAD.

Advanced Air Mobility (AAM) is an emerging sector that aims to optimise transportation in urban and interurban environments using Unmanned Aerial Vehicles (UAVs). However, these aircraft are particularly susceptible to adverse weather phenomena, such as turbulence or wind gusts. To ensure the safety of operations, high-resolution real-time atmospheric prediction models, such as those based on Computational Fluid Dynamics (CFD), are required. The development of these systems faces challenges as accurate geometric models of navigation environments are needed to simulate the interaction between the wind and the terrain and infrastructure. These models feature complex geometries, so they cannot be manually crafted, requiring automated processing of geospatial data sources. As the main novelty, this work presents a methodology for the automated modelling of interurban environments for CFD simulations using digital elevation models and georeferenced surface semantic classification data. A practical case study was developed in the outskirts of Vigo (Spain), where we demonstrate the effectiveness of our approach and its integration with the open-source CFD software OpenFOAM. [ABSTRACT FROM AUTHOR]

El artículo presenta un análisis de la relación entre el sindicalismo y el peronismo en la etapa posterior a 1947, y una descripción del proceso de movilización de los ferroviarios previo a las huelgas de fines de 1950 e inicios de 1951. Desarrolla los efectos que produjo la nacionalización de los ferrocarriles en Argentina, en el sindicato de la Unión Ferroviaria y en la relación de este con el gobierno peronista. De forma pormenorizada, analiza la disputa por la representación sindical de un sector de los trabajadores ferroviarios con la flamante Confederación del Personal Civil de la Nación, en un contexto de intensificación de la conflictividad interna del movimiento peronista y, paralelamente, de fortalecimiento de la voluntad de orden gubernamental. Para poner fin a esta disputa de representación, las negociaciones del sindicato ferroviario con el gobierno incluyeron definir la posición de los dirigentes ferroviarios (y de gran parte de la dirigencia de la Confederación General del Trabajo) respecto del proyecto de reforma del estatuto de la central, que contemplaba la intervención de filiales y la adopción de la doctrina peronista.

In this work, a Detect and Avoid system is presented for the autonomous navigation of Unmanned Aerial Vehicles (UAVs) in Urban Air Mobility (UAM) applications. The current implementation is designed for the operation of multirotor UAVs in UAM corridors. During the operations, unauthorized flying objects may penetrate the corridor airspace posing a risk to the aircraft. In this article, the feasibility of using a solid-state LiDAR (Light Detecting and Ranging) sensor for detecting and positioning these objects was evaluated. For that purpose, a commercial model was simulated using the specifications of the manufacturer along with empirical measurements to determine the scanning pattern of the device. With the point clouds generated by the sensor, the system detects the presence of intruders and estimates their motion to finally compute avoidance trajectories using a Second Order Cone Program (SOCP) in real time. The method was tested in different scenarios, offering robust results. Execution times were of the order of 50 milliseconds, allowing the implementation in real time on modern onboard computers.

Vagally mediated heart rate variability (vmHRV), a measure of the parasympathetic nervous system’s control over the heart, is often negatively related to maladaptive emotional outcomes. Recent work suggests that quadratic relationships involving these factors may be present; however, research has not investigated gender differences in these nonlinear functions. To address this gap, the current study tested for quadratic relationships between resting vmHRV and depression and positive affect while investigating gender differences in these relationships. Significant quadratic effects were found between resting vmHRV and reports of both depression symptoms and positive affect in women but not men. Specifically, the lowest levels of depression and the highest levels of positive affect were found at moderate vmHRV in women. These results suggest that examinations of vmHRV’s nonlinear associations require the consideration of gender. Our findings are interpreted based on proposed differential neuropsychological mechanisms of vmHRV in men versus women.

In this work, a real-time collision avoidance algorithm was presented for autonomous navigation in the presence of fixed and moving obstacles in building environments. The current implementation is designed for autonomous navigation between waypoints of a predefined flight trajectory that would be performed by an UAV during tasks such as inspections or construction progress monitoring. It uses a simplified geometry generated from a point cloud of the scenario. In addition, it also employs information from 3D sensors to detect and position obstacles such as people or other UAVs, which are not registered in the original cloud. If an obstacle is detected, the algorithm estimates its motion and computes an evasion path considering the geometry of the environment. The method has been successfully tested in different scenarios, offering robust results in all avoidance maneuvers. Execution times were measured, demonstrating that the algorithm is computationally feasible to be implemented onboard an UAV.

In the present article an approximation is made to the changes of meaning in the definition of trade unionism and its place in the organization of the Peronist movement, analyzed from the discourses of Juan D. Perón between 1946 and 1955. The objective was to trace the variations of the place assigned to trade unionism in Perón's discourse and to consider them in relation to the political dynamics of trade unionism in the Peronist movement. With this inquiry we hope to contribute to the understanding of the transitions in the organization of Peronism as a movement. As a hypothesis, it is argued that the dynamism of the senses that define unionism in Peronist discourse and its plasticity to accommodate different positions in the structure of movement is a central element to understand its durability.

Starch nanoparticles (SNP) originate from the disruption of the semi-crystalline structure of starch granules. They are very useful in food packaging technology because they increase the mechanical and water vapour resistance of the matrix as well as hinder its recrystallisation during storage in high humidity atmospheres. In medicine, SNP are suitable as carriers in modulated drug delivery for immobilized bioactive or therapeutic agents. Depending on the method of preparation, nanoparticles with different physicochemical, technical or mechanical properties can be obtained. Two different methods of preparation were characterized and compared in this work: the first involving acid hydrolysis of the amorphous part of a starch molecule and the second focusing on the debranching of starch by enzymatic treatment with pullulanase.

Recientemente, he defendido mi tesis de Maestría titulada “Tradición indígena, tradición occidental: tensiones en las crónicas mestizas de Juan Bautista Pomar, Diego Muñoz Camargo y Cristóbal del Castillo (México, siglo XVI)”. En ella, me ocupo de tres textos sobre la conquista de México que presentan similitudes temáticas y estilísticas pero, también, diferencias representativas del oscilante sujeto de enunciación que caracteriza toda crónica mestiza. Además de las dificultades propias de la complejidad de este tipo de crónicas (poco analizadas desde una perspectiva retórico-literaria), a lo largo de mi investigación han surgido otras que no esperaba encontrar. Comparto, en este trabajo, dichas dificultades y la resolución metodológica por la que opté para cada caso.

In this study, several methods were employed to investigate the electrical characteristics of β-Ag2MoO4 systems, both Eu-doped and undoped, synthesized using the microwave-assisted hydrothermal method. The focus extended to understanding how synthesis time influences material defects, with doping fixed at 1%. A systematic shift in the silver vacancy (VAg) concentration was observed within the doped β-Ag2MoO4 system. Specifically, this study demonstrated that the incorporation of Eu3+ into polycrystalline β-Ag2MoO4 initially increases the VAg concentration. However, as the synthesis time progresses, the VAg concentration decreases, resulting in alterations in the resulting electrical properties, arising from the intricate interplay between the number of grain boundaries and carrier density. By combining information obtained from photoluminescence, positron annihilation lifetime spectroscopy, and impedance spectroscopy, a comprehensive conduction mechanism was formulated, shedding light on both doped and undoped β-Ag2MoO4 systems. [ABSTRACT FROM AUTHOR]

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Increasing age is characterized by greater positive affective states. However, there is mixed evidence on the implementation of emotion regulation strategies across the life span. To clarify the discrepancies in the literature, we examined the modulating influence of contextual factors in understanding emotion regulation strategy use in older and young adults. Forty-eight older adults and forty-nine young adults completed a retrospective survey inquiring about the use of emotion regulation strategies in emotion-eliciting situations experienced over the preceding 2 weeks. We used factor analysis to establish clusters of emotion regulation strategies, resulting in cognitive strategies, acceptance, and maladaptive strategies. Overall, we found context-dependent age-related differences in emotion regulation strategy use. Specifically, older adults reported greater use of acceptance than young adults in situations of moderate intensity and in situations that evoke anxiety and sadness. In addition, older adults reported using maladaptive strategies to a lesser extent in high- and moderate-intensity situations and in situations that elicit anxiety and sadness when compared with young adults. There were no age-related differences in the use of cognitive strategies across contexts. Older adults, compared to young adults, reported less use of maladaptive strategies and greater use of acceptance than young adults, which suggests that the enhanced emotional functioning observed later in life may be due to a shift in strategy implementation.

Las crónicas mestizas novohispanas han sido, desde siempre, fuente de información y ejemplificación de gran envergadura para textos históricos o antropológicos sobre la conquista de México. No obstante, el abordaje de las mismas desde un enfoque que enfatice sus cuestiones retóricas y literarias es aún una cuenta pendiente entre los investigadores coloniales. Entre otras carencias, no ha habido análisis sobre el complejo modo en que las tradiciones indígena y occidental inciden en su discurso. Un ejemplo de esto es el caso del cronista mestizo Cristóbal del Castillo (1526?-1604?). En sus crónicas Historia de la conquista (1599) e Historia de la venida de los mexicanos (1600), las únicas que se le conocen, conviven en forma tensionada el discurso occidental y la oralidad indígena proveniente de cantos nahuas. En este artículo propongo un análisis de los cruces existentes entre la retórica oral nahua preconquista y posconquista y las obras de este autor.

La doctrina del margen de apreciación (MoA) de los Estados es presentada como un avance en términos de democratización de los sistemas regionales de protección de los derechos humanos. No obstante, la mayor deferencia que la doctrina implica respecto de los Estados puede operar en favor de los poderes políticos locales y no necesariamente de la democracia entendida como la participación paritaria de toda la ciudadanía. Poner en evidencia esto requiere explorar la concepción de democracia que supone la doctrina del MoA y que ha sido poco abordada. El artículo muestra las insuficiencias del uso genérico del argumento democrático en el contexto de la determinación del margen de apreciación de los Estados por parte del Tribunal Europeo de Derechos Humanos analizando en especial el giro procedimental del MoA. Esto es particularmente relevante en los casos que involucran colectivos en situación de desigualdad estructural y que, por ende, requieren de un escrutinio más estricto que el mero funcionamiento de las instituciones representativas tradicionales.

Toda aproximación a la literatura latinoamericana colonial es un intento por aunar la dispersión, por reunir los fragmentos diseminados, por ahondar en los archivos de la memoria. En este sentido, la escritura de los frailes misioneros del inicio de la evangelización novohispana recoge voces provenientes de distintas tradiciones y manifiestan una ardua labor de búsqueda de información oral y escrita que repercute en sus crónicas, verdaderos archivos de otros discursos del periodo. En este trabajo analizo la inserción de fuentes en las historias de los franciscanos Toribio de Benavente Motolinía y Gerónimo de Mendieta. Estos frailes viajeros, misioneros e historiadores, al intentar aunar la dispersión provocada por el caos de la conquista, se convierten, durante y a raíz de su labor misionera, en frailes archivistas.

Rumination (negative thinking about the past) and worry (anxious apprehension) are two forms of repetitive thinking associated with psychopathology. Prior research indicates that rumination and worry have both distinct and overlapping features, but the extent to which there are separable groups of individuals who engage in rumination, worry, or both has yet to be examined. We used latent profile analysis, a person-centered statistical technique, to examine profiles of repetitive thinkers in two samples ( n s = 635 and 755). In both studies, profiles emerged of individuals who rarely ruminate or worry ( low repetitive thinkers ), individuals who primarily ruminate ( ruminators ), individuals who primarily worry ( worriers ), and individuals who frequently ruminate and worry ( high repetitive thinkers ). In Study 2, a fifth profile of average repetitive thinkers also emerged. Across both samples, high repetitive thinkers showed the highest levels of depression and anxiety symptoms, followed by worriers and ruminators , and then by low repetitive thinkers . In Study 2, the average repetitive thinkers fell below the ruminators and worriers but above the low repetitive thinkers. Thus, there are distinct groups of ruminators and worriers , but individuals who engage in both rumination and worry exhibit the worst outcomes. As such, these findings support adopting a person-centered approach to better understand repetitive thinking styles.