VLBA Determination of the Distance to Nearby Star-forming Regions. IV. A Preliminary Distance to the Proto-Herbig AeBe Star EC 95 in the Serpens Core

Using the Very Long Base Array, we observed the young stellar object EC 95 in the Serpens cloud core at eight epochs from 2007 December to 2009 December. Two sources are detected in our field and are shown to form a tight binary system. The primary (EC 95a) is a 4-5 M_⊙ proto-Herbig AeBe object (arguably the youngest such object known), whereas the secondary (EC 95b) is most likely a low-mass T Tauri star. Interestingly, both sources are non-thermal emitters. While T Tauri stars are expected to power a corona because they are convective while they go down the Hayashi track, intermediate-mass stars approach the main sequence on radiative tracks. Thus, they are not expected to have strong superficial magnetic fields, and should not be magnetically active. We review several mechanisms that could produce the non-thermal emission of EC 95a and argue that the observed properties of EC 95a might be most readily interpreted if it possessed a corona powered by a rotation-driven convective layer. Using our observations, we show that the trigonometric parallax of EC 95 is π = 2.41 ± 0.02 mas, corresponding to a distance of 414.9^(+4.4)_ (–4.3) pc. We argue that this implies a distance to the Serpens core of 415 ± 5 pc and a mean distance to the Serpens cloud of 415 ± 25 pc. This value is significantly larger than previous estimates (d ~ 260 pc) based on measurements of the extinction suffered by stars in the direction of Serpens. A possible explanation for this discrepancy is that these previous observations picked out foreground dust clouds associated with the Aquila Rift system rather than Serpens itself

Internal and relative motions of the Taurus and Ophiuchus star-forming regions

We investigate the internal and relative motions of the Taurus and Ophiuchus star-forming regions using a sample of young stars with accurately measured radial velocities and proper motions. We find no evidence for expansion or contraction of the Taurus complex, but a clear indication for a global rotation, resulting in velocity gradients, this suggests a common origin, possibly related to that of Gould's Belt.Comment: 2 figure

Directional multivariate extremes in environmental phenomena

Several environmental phenomena can be described by different correlated variables that must be considered jointly in order to be more representative of the nature of these phenomena. For such events, identification of extremes is inappropriate if it is based on marginal analysis. Extremes have usually been linked to the notion of quantile, which is an important tool to analyze risk in the univariate setting. We propose to identify multivariate extremes and analyze environmental phenomena in terms of the directional multivariate quantile, which allows us to analyze the data considering all the variables implied in the phenomena, as well as look at the data in interesting directions that can better describe an environmental catastrophe. Since there are many references in the literature that propose extremes detection based on copula models, we also generalize the copula method by introducing the directional approach. Advantages and disadvantages of the non-parametric proposal that we introduce and the copula methods are provided in the paper. We show with simulated and real data sets how by considering the first principal component direction we can improve the visualization of extremes. Finally, two cases of study are analyzed: a synthetic case of flood risk at a dam (a 3-variable case), and a real case study of sea storms (a 5-variable case)

SÍNDROME DE BURNOUT Y SOBRECARGA LABORAL DE ENFERMERÍA EN EL ÁREA COVID-19

Resumen Introducción: A nivel mundial, existen escasos estudios donde relacionan el Síndrome de Burnout con la Sobrecarga laboral manifestado en trastornos psicosomáticos en el personal de enfermería. Objetivo: Determinar la relación entre la sobrecarga laboral y prevalencia del Síndrome de Burnout en el personal de enfermería que labora dentro de las diferentes áreas COVID del Antiguo Hospital General Querétaro durante la pandemia del coronavirus SARS-COV2. Metodología: Estudio observacional, transversal, descriptivo- correlacional, realizado en 70 profesionales de enfermería mediante muestreo por conveniencia en el Hospital COVID del estado de Querétaro, México. Se les aplicó el instrumento “EDO: Escala de Desgaste Ocupacional (Burnout)” del Dr. Uribe Prado, donde se incluyeron datos sociodemográficos, desgaste ocupacional y factores psicosomáticos manifestando la sobrecarga laboral. El proyecto fue evaluado y aprobado por un Comité de Investigación y un Comité de Bioética. Los datos se analizaron en el programa Microsoft Excel, obteniendo la correlación de Pearson, desviación estándar y medidas de tendencia central. Resultados: Se obtuvo que el 74.28% fueron mujeres y el 25.71% hombres, entre 23 a 44 años, que estuvieron en contacto directo con enfermos por COVID.19. El 60% de los profesionales de enfermería se encontraron con un Desgaste ocupacional Alto y los trastornos psicosomáticos más afectados son la ansiedad (23.4%), el dolor (23.1%) y el sueño (18.2%). Se obtuvo una correlación positiva débil de 0.15. Conclusión: El personal de enfermería no se encuentra tan desgastado debido a las estrategias de afrontamiento institucionales y a que se encuentran acostumbrados a un ambiente laboral estresante. Abstract Introduction: Worldwide, there are few studies that relate Burnout Syndrome with Work Overload manifested in psychosomatic disorders in nursing staff. Objective: To determine the relationship between work overload and prevalence of Burnout Syndrome in nursing staff working in the different COVID areas of the Antiguo Hospital General de Querétaro during the SARS-COV2 coronavirus pandemic. Methodology: Observational, cross-sectional, descriptive-correlational study, carried out on 70 nursing professionals through convenience sampling at the COVID Hospital in the state of Querétaro, Mexico. The instrument "EDO: Escala de Desgaste Ocupacional (Burnout)" by Dr. Uribe Prado was applied, which included sociodemographic data, occupational wear and psychosomatic factors manifesting work overload. The project was evaluated and approved by a Research Committee and a Bioethics Committee. The data was analyzed in the Microsoft Excel program, obtaining Pearson's correlation, standard deviation and measures of central tendency. Results: It was found that 74.28% were women and 25.71% were men, between 23 and 44 years old, who were in direct contact with patients with COVID-19. 60% of the nursing professionals found themselves with High Occupational Burnout and the most affected psychosomatic disorders are anxiety (23.4%), pain (23.1%) and sleep (18.2%). A weak positive correlation of 0.15 was obtained. Conclusion: The nursing staff is not so worn out due to institutional coping strategies and because they are used to a stressful work environment

Sindrome de Burnout y Sobrecarga Laboral de Enfermerìa en el Área COVID-19

Introducción: A nivel mundial, existen escasos estudios donde relacionan el Síndrome de Burnout con la Sobrecarga laboral manifestado en trastornos psicosomáticos en el personal de enfermería. Objetivo: Determinar la relación entre la sobrecarga laboral y prevalencia del Síndrome de Burnout en el personal de enfermería que labora dentro de las diferentes áreas COVID del Antiguo Hospital General Querétaro durante la pandemia del coronavirus SARS-COV2. Metodología: Estudio observacional, transversal, descriptivo- correlacional, realizado en 70 profesionales de enfermería mediante muestreo por conveniencia en el Hospital COVID del estado de Querétaro, México. Se les aplicó el instrumento “EDO: Escala de Desgaste Ocupacional (Burnout)” del Dr. Uribe Prado, donde se incluyeron datos sociodemográficos, desgaste ocupacional y factores psicosomáticos manifestando la sobrecarga laboral. El proyecto fue evaluado y aprobado por un Comité de Investigación y un Comité de Bioética. Los datos se analizaron en el programa Microsoft Excel, obteniendo la correlación de Pearson, desviación estándar y medidas de tendencia central. Resultados: Se obtuvo que el 74.28% fueron mujeres y el 25.71% hombres, entre 23 a 44 años, que estuvieron en contacto directo con enfermos por COVID.19. El 60% de los profesionales de enfermería se encontraron con un Desgaste ocupacional Alto y los trastornos psicosomáticos más afectados son la ansiedad (23.4%), el dolor (23.1%) y el sueño (18.2%). Se obtuvo una correlación positiva débil de 0.15. Conclusión: El personal de enfermería no se encuentra tan desgastado debido a las estrategias de afrontamiento institucionales y a que se encuentran acostumbrados a un ambiente laboral estresante.   Introduction: Worldwide, there are few studies that relate Burnout Syndrome with Work Overload manifested in psychosomatic disorders in nursing staff. Objective: To determine the relationship between work overload and prevalence of Burnout Syndrome in nursing staff working in the different COVID areas of the Antiguo Hospital General de Querétaro during the SARS-COV2 coronavirus pandemic. Methodology: Observational, cross-sectional, descriptive-correlational study, carried out on 70 nursing professionals through convenience sampling at the COVID Hospital in the state of Querétaro, Mexico. The instrument "EDO: Escala de Desgaste Ocupacional (Burnout)" by Dr. Uribe Prado was applied, which included sociodemographic data, occupational wear and psychosomatic factors manifesting work overload. The project was evaluated and approved by a Research Committee and a Bioethics Committee. The data was analyzed in the Microsoft Excel program, obtaining Pearson's correlation, standard deviation and measures of central tendency. Results: It was found that 74.28% were women and 25.71% men, between 23 and 44 years old, who were in direct contact with patients with COVID-19. 60% of the nursing professionals found themselves with a High Occupational Burnout and the most affected psychosomatic disorders are anxiety (23.4%), pain (23.1%) and sleep (18.2%). A weak positive correlation of 0.15 was obtained. Conclusion: The nursing staff is not so worn out due to institutional coping strategies and because they are used to a stressful work environment

Benchmarking research performance at the University. Level with information theoretic measures

This paper presents a new method for comparing universities based on information theoretic measures. The research output of each academic institution is represented statistically by an impact-factor histogram. To this aim, for each academic institution we compute the probability of occurrence of a publication with impact factor in different intervals. Assuming the probabilities associated with a pair of academic institutions our objective is to measure the Information Gain between them. To do so, we develop an axiomatic characterization of relative information for predicting institution-institution dissimilarity. We use the Spanish university system as our scenario to test the proposed methodology for benchmarking three universities with the rest as a case study. For each case we use different scientific fields such as Information and Communication Technologies, Medicine & Pharmacy, and Economics & Business as we believe comparisons must take into account their disciplinary context. Finally we validate the Information Gain values obtained for each case with previous studies

Mapping academic institutions according to their journal publication profile: Spanish universities as a case study

Post-print versionWe introduce a novel methodology for mapping academic institutions based on their journal publication profiles. We believe that journals in which researchers from academic institutions publish their works can be considered as useful identifiers for representing the relationships between these institutions and establishing comparisons. However, when academic journals are used for research output representation, distinctions must be introduced between them, based on their value as institution descriptors. This leads us to the use of journal weights attached to the institution identifiers. Since a journal in which researchers from a large proportion of institutions published their papers may be a bad indicator of similarity between two academic institutions, it seems reasonable to weight it in accordance with how frequently researchers from different institutions published their papers in this journal. Cluster analysis can then be applied to group the academic institutions, and dendrograms can be provided to illustrate groups of institutions following agglomerative hierarchical clustering. In order to test this methodology, we use a sample of Spanish universities as a case study. We first map the study sample according to an institution’s overall research output, then we use it for two scientific fields (Information and Communication Technologies, as well as Medicine and Pharmacology) as a means to demonstrate how our methodology can be applied, not only for analyzing institutions as a whole, but also in different disciplinary contexts

Mapping citation patterns of book chapters in the Book Citation Index

Complementary Material to this study can be found at http://hdl.handle.net/10481/22587.In this paper we provide the reader with a visual representation of relationships among the impact of book chapters indexed in the Book Citation Index using information gain values and published by different academic publishers in specific disciplines. The impact of book chapters can be characterized statistically by citations histograms. For instance, we can compute the probability of occurrence of book chapters with a number of citations in different intervals for each academic publisher. We predict the similarity between two citation histograms based on the amount of relative information between such characterizations. We observe that the citation patterns of book chapters follow a Lotkaian distribution. This paper describes the structure of the Book Citation Index using ‘heliocentric clockwise maps’ which allow the reader not only to determine the grade of similarity of a given academic publisher indexed in the Book Citation Index with a specific discipline according to their citation distribution, but also to easily observe the general structure of a discipline, identifying the publishers with higher impact and output.This research was sponsored by the Spanish Board for Science and Technology (MICINN) under grant TIN2010- 15157 co financed with European FEDER funds

EL CONCEPTO DE ESPACIO GEOGRÁFICO DE LOS MAESTROS AL TABLERO

En la enseñanza de la geografía, que ha sido nuestra práctica pedagógica ypreocupación constante, se evidencia el problema de evaluar los conocimientosgeográficos que los alumnos interiorizan después de cursar los grados escolares.Con tal propósito se planteó la necesidad de identificar el concepto de espaciogeográfico que explicitan los alumnos de quinto grado. Para tal efecto, fue necesariorevisar: el concepto de "concepto"; el de "espacio geográfico", las características deldesarrollo cognoscitivo de los alumnos con edades entre 10 y 12 años y lasinvestigaciones sobre desarrollo del pensamiento e inteligencia espacial realizadaspor Piaget, Bruner, Gardner, Laurandeau y Pinard, Piñeiro y Gil, principalmente

La descripción en la enseñanza geográfica

El propósito de este artículo es presentar la descripción geográficacomo un método en la enseñanza y el aprendizaje de las ciencias sociales,especialmente, la geografía. Para ello, se sugieren algunas estrategias didácticasa través de las cuales los estudiantes desarrollan su capacidad de observación ysu habilidad para describir paisajes en el medio ambiente, mientras enriquecen suvocabulario. Estas estrategias no sólo podrían aplica rse en cualquier nivel deeducación básica, sino también en programas de pregrado