Chemical distribution of HII regions towards the Galactic anticentre

We study the physical and chemical properties of a sample of HII regions located at RG >11 kpc and present the radial distribution of abundances towards the Galaxy anticentre. We carried out optical spectroscopic observations of nine HII regions with the WHT. The sample was increased by searching the literature for optical observations of regions towards the Galactic anticentre, re-analysing them to obtain a single sample of 23 objects covering the Galactocentric radius from 11 kpc to 18 kpc to be processed in a homogeneous and consistent manner. Accurate electron densities and temperatures of several ionic species were derived in 13 HII regions. These physical parameters were applied to the spectra to determine direct total chemical abundances. For those regions without direct estimations of temperature, chemical abundances were derived by performing tailor-made photoionisation models and/or by using an empirical relation obtained from radio recombination and optical temperatures. We performed weighted least-squares fits to the distribution of the derived abundances along the Galactocentric distances to study the radial gradients of metallicity. The distributions O/H, N/H, S/H, and Ar/H towards the anticentre can be represented by decreasing linear radial gradients, while in the case of N/O abundances the radial distribution is better fitted with a two-zone model. The He/H radial gradient is presented here for the first time; we find a slope that is not significantly different from zero. The derived gradient for oxygen shows a clear decrease with distance with a slope of -0.053dex/kpc. Although a shallower slope at large Galactocentric distances is suggested by our data, the flattening of the distribution cannot be confirmed and more objects towards the anticentre need to be studied in order to establish the true form of the metallicity gradient.Comment: Accepted for publication in Section 5. Galactic structure, stellar clusters and populations of Astronomy and Astrophysics. The official date of acceptance is 13/09/2016. 19 pages, 15 figures and 10 table

Method to guide the design of project based learning activities based on educational theories

Project Based Learning (PjBL) has shown to be effective in engineering to acquire both professional and lifelong learning skills. Nevertheless, some authors assert it is not an easy instructional method to implement. It requires teaching skills and entails some difficulties for both students and teachers, specially related to the time and effort needed to put it into practice. In some countries, the implementation of PjBL has a limited scope, restricted to single courses that do not have a great repercussion in the curriculum. Moreover, some teachers tend to implement PjBL intuitively, based on their teaching experience instead of following important PjBL principies or instructional practices. To facilítate the proliferation and better establishment of PjBL in these countries, it is necessary to engage more teachers in best practices of this methodology, applying its main instructional principies and adequate educational theories. In this way, they could overeóme the difficulties mentioned above and obtain better results in their experiences. This study is aimed at defining a method to design activities based on PjBL. This method guides teachers in the use of PjBL principies and several instructional design models. In particular, the method deals with the definition and articulation of an appropriate problem. In addition, it faces three fundamental issues in active learning and especially in PjBL: Students' Motivation, Supporting Students' Work and Autonomous Working. This proposal is specially focused on those academic contexts in which instructors are starting to use this methodology and students are not used to dealing with ill-structured projeets, and consequently they could find important difficulties in its implementation. The method has been put into practice in three courses, where first results seem to be satisfactory according to a survey conducted by the Universidad Politécnica de Madrid. Results spanning the last six years of this survey have been analyzed. Currently, it is being used to implement a multidisciplinary project which covers four courses in a Master's degree. Finally, a collaborative online tool and teacher workshop further supports this method

Measuring the influence of Cooperative Learning and Project Based Learning on problem solvin skill.

The aim of this study is to evaluate the effects obtained after applying two active learning methodologies (cooperative learning and project based learning) to the achievement of the competence problem solving. This study was carried out at the Technical University of Madrid, where these methodologies were applied to two Operating Systems courses. The first hypothesis tested was whether the implementation of active learning methodologies favours the achievement of ?problem solving?. The second hypothesis was focused on testing if students with higher rates in problem solving competence obtain better results in their academic performance. The results indicated that active learning methodologies do not produce any significant change in the generic competence ?problem solving? during the period analysed. Concerning this, we consider that students should work with these methodologies for a longer period, besides having a specific training. Nevertheless, a close correlation between problem solving self appraisal and academic performance has been detected

Integration of three instructional design models within the organization of PBL activities

This work is aimed at defining a method to design courses based on Project Based Learning methodology. This proposal is specially focused on those academic contexts in which instructors are starting to use this methodology and students are not used to dealing with illstructured projects, and consequently they could find important difficulties in its implementation. To reach this goal, this method is based on several instructional design models, learning theories and PBL principles. In particular, the method faces three fundamental issues in active learning and especially in PBL: Students’ Motivation, Supporting Students’ Work and Autonomous Working. Engaging instructors to follow these models when they are designing the course facilitates the subsequent success during the course implementation. The method has been put into practice in three courses, where first results seem to be satisfactory according to a survey conducted by the University. Results of this survey over for the last six years have been analysed. Besides the description of the method, we present a collaborative online tool that supports i

Las políticas públicas para el trabajo académico, la negociación y el convenio colectivo en el sistema universitario argentino. Las posibilidades de su implementación y el "efecto de dependencia"

Este trabajo analiza el proceso de negociación colectiva del trabajo en el sistema universitario argentino, y en particular, la definición, construcción y puesta en vigencia del convenio colectivo de trabajo aplicado al ámbito académico. Es resultado parcial del proyecto de investigación "Políticas Públicas de educación superior en el contexto de la regionalización y globalización: el actor sindical, los dispositivos vinculados a la profesión académica y la política" en curso en la Facultad de Humanidades de la UNMDP (2014-2015). Partiendo de la base de una de las herramientas del análisis de políticas públicas, la noción de "path dependence" o "dependencia del camino recorrido", se analizan los diferentes momentos de este proceso de instrumentalización de la acción pública. Basándonos en fuentes documentales, abordamos la intervención contradictoria de algunos actores universitarios incentivando y resistiendo el cambio que implica la vigencia plena del convenio colectivo para el trabajo académico.Fil: Pérez, Pedro Enrique. Universidad Nacional de Mar del Plata. Facultad de Humanidades; Argentina.Fil: Solanas, Facundo. Universidad Nacional de Mar del Plata. Facultad de Humanidades; Argentina.Fil: Martín, Celina Livia. Universidad Nacional de Mar del Plata. Facultad de Humanidades; Argentina

Historias de un influenciador digital: análisis de las implicaciones de los usos de trabajos creativos en historias de instagram a la luz del derecho de autor colombiano

This work makes an analysis of the Copyright implications of the use of protected works in Instagram “Stories” as part of endorsement activities by Social Media Influencers (SMI’S) in light of Colombian Law. Social media has brought an economic revolution where SMI’S have found a way to make a living by producing advertisement content in their social media accounts. Some of the key pieces of interaction used by these influencers come in the form of “Stories” used in the popular Social Media Platform “Instagram”: photo and video posts, which make constant use of owned and third party Copyright works. These activities are analysed in light of Colombian Copyright regime, including provisions of the recently introduced Law 1915 of 2018. As an overall outcome it is concluded that Colombian Copyright Regime matches the standard of protection set up by international treaties in regards of digital uses of Copyright works, like those made in Instagram Stories. However, the vagueness of some of the provisions of the laws might bring interpretation problems respecting such uses.Este trabajo hace un análisis de las implicaciones legales del uso de obras protegidas en las “historias” de Instagram como parte de las actividades publicitarias desarrolladas por los influenciadores digitales a la luz del Régimen de Derechos de Autor y Conexos colombiano. Las redes sociales han propiciado una revolución económica en la que los influenciadores digitales han encontrado una manera de ganarse la vida mediante la producción de contenido publicitario en sus redes sociales. Algunas de las formas clave de interacción utilizadas por estos influenciadores son las “historias” de la popular red social Instagram: publicaciones de foto y video, que hacen uso constante de obras protegidas propias y de terceros. Estas actividades se analizan a la luz del régimen colombiano de derecho de autor, incluyendo las provisiones de la recientemente promulgada Ley 1915 de 2018. Como conclusión, se afirma que el Régimen de Derechos de Autor colombiano coincide con el estándar de protección establecido por los tratados internacionales con respecto a los usos digitales de las obras protegidas, como los hechos en las “historias” de Instagram. Sin embargo, la vaguedad y la ambigüedad de algunas de las disposiciones que las leyes ofrecen pueden traer problemas de interpretación con respecto a tales usos

Optimización temporal de las señales automáticas proporcionadas por indicadores técnicos bursátiles

[EN] Stock exchange indicators deliver buy/sell signals that enable analysts to improve the results of a strategy based strictly on fundamental analysis. Nonetheless, since the automatic implementation of signals as they appear may not yield optimal returns, the present paper analysed the suitability of using a series of technical indicators as guidance for portfolio results. A second aim pursued was to study how delaying the implementation of indicator signals may enhance profitability. A simulation was performed for the years 2005-2016 using the most representative index for the Spanish stock exchange, the IBEX35 and all its constituent securities, along with seven indicators (RoC, RSI, SMA, EMA, MACD, Bollinger bands and Stochastic Oscillator) and a total of 81 combinations of buy/sell lag times. The definition of three non-overlapping sub-periods to guarantee the reliability of the findings yielded a total of 61 236 simulated portfolios. The conclusion drawn from the results was that for certain combinations of indicators, delaying the implementation of buy/sell signals improves returns. More specifically, optimal lag times identified for RSI and EMA signals were shown to deliver statistically significant improvements in portfolio returns, irrespective of the period studied. Those findings were consistent the results of an alternative simulation in which the five securities that were both the most liquid and had the greatest impact on the index were not considered, to rule out the possible effect of the relative weight of securities on either portfolio returns or their normalisation.[ES] Los indicadores técnicos bursátiles transmiten al analista señales de compra/venta que, en el caso de ser ejecutadas en el momento de producirse, podrían no ser óptimas desde el punto de vista del resultado de la operación. El objetivo del presente trabajo es doble. En primer lugar, analizar la idoneidad del seguimiento de una batería de indicadores para la obtención de resultados en una cartera. En segundo lugar, estudiar cómo la introducción de retardos temporales entre las señales de los indicadores y la ejecución de las operaciones puede mejorar el resultado de la misma. Se ha realizado una simulación, para el intervalo 2005-2016, con 35 títulos y un índice, sobre 7 indicadores técnicos bursátiles (ROC, RSI, Cruce SMA, Cruce EMA, MACD, Bandas de Bollinger y oscilador estocástico) y un total de 81 combinaciones de retardos de compra/venta. La definición del modelo y la división en tres periodos no solapados genera un total de 61.236 carteras. Los resultados permiten concluir que existen combinaciones de indicador y retardos de compra/venta que proporcionan mejores resultados que la ejecución inmediata de la señal. Concretamente, se identifican retardos óptimos para RSI y cruce EMA que producen mejoras estadísticamente significativas en el resultado de una cartera de valores, independientemente del periodo estudiado. Estos resultados son consistentes con una simulación alternativa en la que se excluyó a los cinco activos más líquidos y de mayor capitalización, para descartar el posible efecto generado por el peso relativo de los valores en la rentabilidad de la cartera o en su normalización

The ESEAS-RI Sea Level Test Station: Reliability and Accuracy of Different Tide Gauges

In December 2002 a test station of six tide gauges using four different technologies (acoustic, pressure, pulse radar and FMCW radar) was established by Puertos del Estado at the port of Vilagarcfa de Arousa (NW Spain), as part of the ESEAS-RI (European Sea Level Service- Research & Infrastructure) project. The aim was to compare the performance of the tide gauges in order to support the future decisions concerning the improving of the sea level observing systems. Although the comparison of the sea level time series showed that all the tide gauges met GLOSS (Global Sea Level Observing System) quality standards, the experiment also revealed some differences in the quality of the data for certain ranges of frequency.En diciembre de 2002, y como parte del proyecto europeo ESEAS-RI (European Sea Level Service Research&lnfrastructure), Puertos del Estado instalô una estaciôn piloto de seis mareôgrafos de tecnologîas diferentes (acustica, de presiôn, radar de pulso y radar de barrido de frecuencias) en el puerto de Vilagarcia de Arousa (NO Espaha). El objetivo era comparar el funcionamiento de los mareôgrafos con el fin de apoyar decisiones futuras concernientes a la mejora de las redes de medida del nivel del mar. A pesar de que las comparaciones realizadas con las series temporales de nivel del mar mostraron que todos los equipos satisfacen los requerimientos exigidos por GLOSS (Global Sea Level Observing System), el experimento también revelô algunas diferencias en la calidad de los datos para ciertos rangos de frecuencia.En décembre 2002, dans le cadre du projet européen ESEAS-RI (European Sea Level Service Research&lnfrastructure), une station pilote de six marégraphes utilisant quatre technologies différentes (acoustique, à pression, radar par impulsions et radar à onde entretenue modulée en fréquence) a été installée par Puertos del Estado au port de Vilagarcîa de Arousa (NO de l ’Espagne). L’objectif était de comparer le fonctionnement des marégraphes afin de soutenir les futures décisions relatives à l ’amélioration des systèmes d’observation du niveau de la mer. Bien que la comparaison des séries chronologiques du niveau de la mer ait montré que tous les marégraphes satisfont aux normes de qualité GLOSS (Système mondial d’observation du niveau de la mer), l ’expérience a également mis en lumière certaines différences dans la qualité des données pour certaines gammes de fréquence

Supporting the design and development of Project Based Learning courses.

The use of Project Based Learning has spread widely over the last decades, not only throughout countries but also among disciplines. One of the most significant characteristics of this methodology is the use of ill-structured problems as central activity during the course, which represents an important difficulty for both teachers and students. This work presents a model, supported by a tool, focused on helping teachers and students in Project Based Learning, overcoming these difficulties. Firstly, teachers are guided in designing the project following the main principles of this methodology. Once the project has been specified at the desired level of depth, the same tool helps students to finish the project specification and organize the implementation. Collaborative work among different users is allowed in both phases. This tool has been satisfactorily tested designing two real projects used in Computer Engineering and Software Engineering degrees