Looking for phase-space structures in star-forming regions: An MST-based methodology

We present a method for analysing the phase space of star-forming regions. In particular we are searching for clumpy structures in the 3D sub-space formed by two position coordinates and radial velocity. The aim of the method is the detection of kinematic segregated radial velocity groups, that is, radial velocity intervals whose associated stars are spatially concentrated. To this end we define a kinematic segregation index, Λ(RV), based on the Minimum Spanning Tree graph algorithm, which is estimated for a set of radial velocity intervals in the region. When Λ(RV) is significantly greater than 1 we consider that this bin represents a grouping in the phase space. We split a star-forming region into radial velocity bins and calculate the kinematic segregation index for each bin, and then we obtain the spectrum of kinematic groupings, which enables a quick visualization of the kinematic behaviour of the region under study. We carried out numerical models of different configurations in the sub-space of the phase space formed by the coordinates and the that various case studies illustrate. The analysis of the test cases demonstrates the potential of the new methodology for detecting different kind of groupings in phase space.We acknowledge support from the Spanish Ministry for Economy and Competitiveness and FEDER funds through grant AYA2013-40611-P.Peer Reviewe

Preparing for generation Z:how can technology enhanced learning be firmly embedded in our students' learning experience? A case study from Abertay University

Abertay is a relatively small, modern university (undergraduate population of around 4000) with a wide portfolio and a diverse student population. Around 35% of our students are direct entry from local partner colleges to years 2 and 3 of our programmes and a significant number are first generation higher education within their families. As such, partnership working with colleges and support to aid student transitions are key aspects of Abertay’s provision. Since 2013/14, the university has developed and implemented a new Teaching and Learning Enhancement strategy that has catalysed wholescale transformation across the institution. This paper provides an overview of technology enhanced learning at the university with the drivers for change being to the quality of our students' learning experience, improve student retention and progression and enhance learners’ engagement

Las imágenes de la historia en la obra de Stanley Kubrick.

Sin resume

Neuronas Espejo y Teoría de la Mente en la explicación de la empatía

La empatía es la capacidad de una persona para vivenciar los pensamientos y sentimientos de los otros, reaccionando adecuadamente. Diferenciamos en la empatía dos componentes: cognitivo y emocional. El componente cognitivo comprende los pensamientos y sentimientos del otro. El componente afectivo comparte el estado emocional de otra persona. Comentamos dos teorías para explicar la empatía: las neuronas espejo y la Teoría de la Mente. Las neuronas espejo son un tipo particular de neuronas que se activan cuando un individuo realiza una acción, pero también cuando él observa una acción similar realizada por otro individuo Para la teoría de la mente atribuir mente a otro es una actividad teórica ya que no podemos observar su mente, pero generamos hipótesis sobre lo que está pensando o sintiendo, e interpretamos así su comportamiento. Argumentamos una continuidad genética entre ambas teorías, que se sitúan a nivel explicativo distinto: las neuronas espejo a nivel neuronal (neurociencia básica) y la teoría de la mente en el nivel cognitivo. Mostramos implicaciones de ambas teorías en la comprensión del autismo. [ABSTRACT]Empathy is a person’s ability to experiment other people’s thoughts and feelings and to react to them in an adequate manner. There are two different components within the concept of empathy: cognitive and emotional. The former implies the ability to understand thoughts and feelings of another person; the latter allows the individual to share the mental state of another person responding to his/her demands. We comment here on two theories that explain empathy: the mirror neurons and the Theory of Mind. Mirror neurons are a particular type of neurons which are activated when an individual performs an action, but also when he/she observes a similar action performed by someone else. For theory of mind, to attribute mind to another person is a theoretical activity because we cannot observe his mind, but we generate hypotheses about what he/she is thinking about or feeling, and, in this way, we interpret his/her behaviour. We deduce a genetic continuity between both theories in a different explanatory level: mirror neurons at a neuronal level (basic neuroscience) and theory of mind at a cognitive level. Implications of both theories in the explanation of autism are discussed

Aportaciones al conocimiento del género Salix L. (Salicaceae) en la provincia de León (NW España)

Los autores han reconocido en el territorio estudiado 5 táxones del subgénero Salix y 7 del subgénero Vetrix así como 16 híbridos. Consideran a S. neotricha una especie independiente de S. fragilis. Se describen los siguientes híbridos: Salix x expectata, Salix x pormensis, Salix x viridifolia, Salix x pseudosalvifolia, Salix x longissima, Salix x pseudoelaeagnos, Salix x multidentata y Salix x rijosa.De cada taxon se aporta la distribución en la provincia de León en base a la cartografía UTM de 10 km de lado, así como su comportamiento fitosociológico.Se aportan tres claves dicotómicas para la diferenciación de los táxones del género Salix en la provincia de León basándose en los amentos masculinos y femeninos, así como la morfología foliar.The autors have recognized in the studied territory 5 taxa of the Salix subgenus and 7 of the Vetrix subgenus as well as sixteen hybrids. They consider S. neotricha an independent species from S. fragilis. The following hybrids are described: Salix x expectata, Salix x pormensis, Salix x viridifolia, Salix x pseudosalvifolia, Salix x longissima, Salix x pseudoelaeagnos, Salix x multidentata and Salix x rijosa.We give the chorology of each taxon in León province on maps with UTM coordinates of 10 km, as well as its phytosociological behaviour.Three dichotomic keys are given in order to identify the taxa of the Salix genus living in León province. These are based on male and female catkins as well as leaf morpholog

De Plantis Legionensibus. Nota III

Como continuación de las anteriores notas florísticas, se complementa el catálogo provincial con una docena de táxones, resultado de diversas recolecciones botánicas efectuadas por distintas zonas del territorio leonés. As following the former check list notes on Ledn area, twelve taxa are recorded by the firs time for this area

Clave para la identificación de las especies ibéricas del género Juncus L. basada en caracteres anatómicos

Se aporta una clave dicotómica para la identificación de táxones ibéricos del género Juncus L., basada fundamentalmente en los siguientes caracteres anatómicos de tallos y hojas: distribución del esclerénquima y de los haces vasculares; tipología del parénquima medular y de las células epidérmicas; características del aparato estomático e índice estomático.A dichotomous key is provided in order to differentiate the iberian taxa of the genus Juncus L., mainly based on the following anatomical characters of the stems and leaves: sclerenchyma and vascular bundles distribution; central ground tissue and epidermic cells type; stomatic characteristcs and stomatic index