Effect of bars on the galaxy properties

Aims: With the aim of assessing the effects of bars on disc galaxy properties, we present an analysis of different characteristics of spiral galaxies with strong, weak and without bars. Method: We identified barred galaxies from the Sloan Digital Sky Survey. By visual inspection, we classified the face-on spiral galaxies brighter than g<16.5 mag into strong-bar, weak-bar and unbarred. In order to provide an appropiate quantification of the influence of bars on galaxy properties, we also constructed a suitable control sample of unbarred galaxies with similar redshift, magnitude, morphology, bulge sizes, and local density environment distributions to that of barred galaxies. Results: We found 522 strong-barred and 770 weak-barred galaxies, representing a 25.82% of the full sample of spiral galaxies, in good agreement with previous studies. We also found that strong-barred galaxies show less efficient star formation activity and older stellar populations compared to weak-barred and unbarred spirals from the control sample. In addition, there is a significant excess of strong barred galaxies with red colors. The color-color and color-magnitude diagrams show that unbarred and weak-barred galaxies are more extended towards the blue zone, while strong-barred objects are mostly grouped in the red region. Strong-barred galaxies present an important excess of high metallicity values, compared to the other types, showing similar 12+log(O/H) distributions. Regarding the mass-metallicity relation, we found that weak-barred and unbarred galaxies are fitted by similar curves, while strong-barred ones show a curve which falls abruptly, with more significance in the range of low stellar masses (log[Mstar/Msun] < 10.0). These results would indicate that prominent bars produced an accelerating effect on the gas processing, reflected in the significant changes in the physical properties of their host

Program Predicts Time Courses of Human/Computer Interactions

CPM X is a computer program that predicts sequences of, and amounts of time taken by, routine actions performed by a skilled person performing a task. Unlike programs that simulate the interaction of the person with the task environment, CPM X predicts the time course of events as consequences of encoded constraints on human behavior. The constraints determine which cognitive and environmental processes can occur simultaneously and which have sequential dependencies. The input to CPM X comprises (1) a description of a task and strategy in a hierarchical description language and (2) a description of architectural constraints in the form of rules governing interactions of fundamental cognitive, perceptual, and motor operations. The output of CPM X is a Program Evaluation Review Technique (PERT) chart that presents a schedule of predicted cognitive, motor, and perceptual operators interacting with a task environment. The CPM X program allows direct, a priori prediction of skilled user performance on complex human-machine systems, providing a way to assess critical interfaces before they are deployed in mission contexts

El practicum como espacio de formación. Algunas experiencias de mejora en los grados de Infantil y Primaria.

Esta adenda, pretende contribuir a pensar la relación teoría-práctica desde uno de sus posibles ángulos de abordaje: el de la manera de diseñar el practicum como espacio curricular al servicio de una práctica reflexiva y transformadora. Para ello se presentan dos experiencias llevadas a cabo en la Facultad de Ciencias de la Educación de la Universidad de Málaga.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Hippocampal sclerosis affects fMR-adaptation of lyrics and melodies in songs

Songs constitute a natural combination of lyrics and melodies, but it is unclear whether and how these two song components are integrated during the emergence of a memory trace. Network theories of memory suggest a prominent role of the hippocampus, together with unimodal sensory areas, in the build-up of conjunctive representations. The present study tested the modulatory influence of the hippocampus on neural adaptation to songs in lateral temporal areas. Patients with unilateral hippocampal sclerosis and healthy matched controls were presented with blocks of short songs in which lyrics and/or melodies were varied or repeated in a crossed factorial design. Neural adaptation effects were taken as correlates of incidental emergent memory traces. We hypothesized that hippocampal lesions, particularly in the left hemisphere, would weaken adaptation effects, especially the integration of lyrics and melodies. Results revealed that lateral temporal lobe regions showed weaker adaptation to repeated lyrics as well as a reduced interaction of the adaptation effects for lyrics and melodies in patients with left hippocampal sclerosis. This suggests a deficient build-up of a sensory memory trace for lyrics and a reduced integration of lyrics with melodies, compared to healthy controls. Patients with right hippocampal sclerosis showed a similar profile of results although the effects did not reach significance in this population. We highlight the finding that the integrated representation of lyrics and melodies typically shown in healthy participants is likely tied to the integrity of the left medial temporal lobe. This novel finding provides the first neuroimaging evidence for the role of the hippocampus during repetitive exposure to lyrics and melodies and their integration into a song

Capability Considerations for Enhancing Safety on Long Duration Crewed Missions: Insights from a Technical Interchange Meeting on Autonomous Crew Operations

As future flight crews on long duration deep space missions are expected to operate more autonomously, considerations must be given to onboard capabilities and human-computer teaming that will fortify the safety net traditionally provided by the Mission Control Center. In August 2018, the Human Factors and Behavioral Performance Element of NASA's Human Research Program convened a Technical Interchange Meeting (TIM) on Autonomous Crew Operations at NASA Ames Research Center to address how intelligent technologies can be utilized to augment crew capabilities to support real-time anomaly response. In this paper, we highlight three topic areas discussed at the TIM that have direct implications for future crew anomaly response capabilities: smart structures, cognitive assistants, and manpower

Capability considerations for enhancing safety on long duration crewed missions: Insights from a technical interchange meeting on autonomous crew operations

As future flight crews on long duration deep space missions are expected to operate more autonomously, considerations must be given to onboard capabilities and human-computer teaming that will fortify the safety net traditionally provided by the Mission Control Center. In August 2018, the Human Factors and Behavioral Performance Element of NASA\u27s Human Research Program convened a Technical Interchange Meeting (TIM) on Autonomous Crew Operations at NASA Ames Research Center to address how intelligent technologies can be utlilzed to augment crew capabilities to support real-time anomaly response. In this paper, we highlight three topic areas discussed at the TIM that have direct implications for future crew anomaly response capabilities: smart structures, cognitive assistants, and manpower

Dous poemas en catalán de Álvaro Cunqueiro.

Sin resume

Singularity resolution by holonomy corrections: Spherical charged black holes in cosmological backgrounds

We study spherical charged black holes in the presence of a cosmological constant with corrections motivated by the theory of loop quantum gravity. The effective theory is constructed at the Hamiltonian level by introducing certain correction terms under the condition that the modified constraints form a closed algebra. The corresponding metric tensor is then carefully constructed ensuring that the covariance of the theory is respected, that is, in such a way that different gauge choices on phase space simply correspond to different charts of the same spacetime solution. The resulting geometry is characterized by four parameters: the three usual ones that appear in the general relativistic limit (describing the mass, the charge, and the cosmological constant), as well as a polymerization parameter, which encodes the quantum-gravity corrections. Contrary to general relativity, where this family of solutions is generically singular, in this effective model the presence of the singularity depends on the values of the parameters. The specific ranges of values that define the family of singularity-free spacetimes are explicitly found, and their global structure is analyzed. In particular, the mass and the cosmological constant need to be nonnegative to provide a nonsingular geometry, while there can only be a bounded, relatively small, amount of charge. These conditions are suited for any known spherical astrophysical black hole in the de Sitter cosmological background, and thus this model provides a globally regular description for them.Comment: Minor corrections performed. Version matching the published paper. 38 pages, 10 figures, 6 appendice

“NIVEL DE CONOCIMIENTO EN REANIMACIÓN CARDIOPULMONAR PEDIÁTRICA EN MÉDICOS RESIDENTES Y MÉDICOS ESPECIALISTAS DEL HOSPITAL GENERAL DR. NICOLÁS SAN JUAN DURANTE EL AÑO 2012”

TITULO: “Nivel de conocimiento en reanimación cardiopulmonar pediátrica en médicos residentes y médicos especialistas del Hospital General Dr. Nicolás San Juan durante el año 2012”. Alonso-Vera K.A. 1, Fuentes-Cuevas M.C.2. OBJETIVO: Identificar el nivel de conocimiento de médicos residentes y especialistas de pediatría y en las áreas que interactúan ante un paciente pediátrico en paro cardiorrespiratorio. DISEÑO, MATERIAL Y MÉTODO: Estudio observacional, descriptivo y transversal, se realizó en Hospital General Dr. Nicolás San Juan, del ISEM, El universo de trabajo fue médicos especialistas y residentes a los que se les aplicó un cuestionario de Reanimación Cardiopulmonar (RCP) pediátrico, en el periodo comprendido entre Enero a Diciembre 2012. RESULTADOS: Se estudió a un total de 50 médicos, 33 médicos especialistas (66%) y 17 residentes (34%). Se tomó a médicos de las especialidades de Pediatría (40%), Cirugía (20%), Anestesiología (20%) y Urgencias (20%). De los 50 participantes el 32% habían realizado curso de RCP Pediátrica, que corresponde a 18 médicos, 32 de los participantes (64%), no habían realizado el curso. Se encontró que del total de los participantes solo 4 médicos especialistas obtuvieron calificación aprobatoria, correspondientes al área de Pediatría, los 46 médicos restantes, incluyendo médicos especialistas y residentes de las diversas áreas, obtuvieron calificación reprobatoria. CONCLUSIONES: Se concluye que los médicos no tienen los conocimientos suficientes para la aplicación de las maniobras de reanimación en Pediatría, no obstante de estar en contacto diario con pacientes pediátricos que están en riesgo o que pueden llegar a necesitar la aplicación de éstas técnicas en reanimación. Lo cual puede ser debido a la falta de actualización de sus conocimientos en reanimación o falta de interés al tomar éstos cursos a pesar de laborar en un área donde se trata con pacientes pediátricos. Es por todo esto que los médicos, tanto especialistas como residentes deben estar capacitados para actuar ante una emergencia y por ello es que todo médico que tiene a su cuidado pacientes pediátricos debe estar actualizado, contar con los conocimientos suficientes en reanimación para la aplicación de estas técnicas, en especial los médicos pediatras ya que en la práctica diaria se enfrentan a casos de ésta índole