La promoción de una cultura institucional reflexiva para la formación del profesorado. Experiencias en la Universidad de Navarra

El artículo comienza situando la formación docente en el contexto del desarrollo de la cultura institucional. Se argumenta que la principal responsabilidad de los directivos es el cuidado de la cultura de su institución. A continuación se describe el planteamiento general de la formación del profesorado en la Universidad de Navarra, prestando particular atención a dos iniciativas recientes: el Programa DOCENS para el profesorado junior y la Jornada sobre la Identidad de la Universidad para el profesorado senior. En artículo concluye ofreciendo algunas reflexiones acerca de la necesidad –para la adecuada preparación de los docentes– de definir el proyecto formativo global de cada titulación desde la perspectiva de la contribución que la universidad debe hacer a la sociedad

NGC 3105: a young open cluster with low metallicity

NGC 3105 is a young open cluster hosting blue, yellow and red supergiants. This rare combination makes it an excellent laboratory to constrain evolutionary models of high-mass stars. It is poorly studied and fundamental parameters such as its age or distance are not well defined. We intend to characterize in an accurate way the cluster as well as its evolved stars, for which we derive for the first time atmospheric parameters and chemical abundances. We identify 126 B-type likely members within a radius of 2.7$\pm$0.6 arcmin, which implies an initial mass, $M_{cl}\approx$4100 M$_{\odot}$. We find a distance of 7.2$\pm$0.7 kpc for NGC 3105, placing it at $R_{GC}$=10.0$\pm$1.2 kpc. Isochrone fitting supports an age of 28$\pm$6 Ma, implying masses around 9.5 M$_{\odot}$ for the supergiants. A high fraction of Be stars ($\approx$25 %) is found at the top of the main sequence down to spectral type b3. From the spectral analysis we estimate for the cluster a $v_{rad}$=+46.9$\pm$0.9 km s$^{-1}$ and a low metallicity, [Fe/H]=-0.29$\pm$0.22. We also have determined, for the first time, chemical abundances for Li, O, Na, Mg, Si, Ca, Ti, Ni, Rb, Y, and Ba for the evolved stars. The chemical composition of the cluster is consistent with that of the Galactic thin disc. An overabundance of Ba is found, supporting the enhanced $s$-process. NGC 3105 has a low metallicity for its Galactocentric distance, comparable to typical LMC stars. It is a valuable spiral tracer in a very distant region of the Carina-Sagittarius spiral arm, a poorly known part of the Galaxy. As one of the few Galactic clusters containing blue, yellow and red supergiants, it is massive enough to serve as a testbed for theoretical evolutionary models close to the boundary between intermediate and high-mass stars.Comment: 18 pages, 13 figures. Accepted for publication in A&

How advertising affects quality perception of public service television? A comparison of two surveys in Spain (2008 and 2012)

This paper aims at providing new insights about audiences’ opinions concerning the role of advertising and its relation with the perceived quality of TV channels. It analyses Spanish audience's perception of quality of public service broadcasters TVE1 and La 2 before and after the advertising withdrawal in 2010. The goal is identifying if the advertising removal is perceived as an improvement of the quality of TVE. The first conclusion is that a vast majority of the viewers find the channels more attractive now without any advertising than before having it. In addition, gender and age are not significant variables in order to affect this opinion. But the audience educational level does impact their perception: those less educated have a significantly better opinion about the advertising withdrawal than others who are more educated. Both national public service channels (TVE1 and La 2) have improved significantly their quality perception when comparing 2008 and 2012 surveys. They are the only two channels within the Spanish market to obtain a better quality assessment. In fact, all channels tend to maintain or reduce their quality perception in the 2008–2012 time period

Small group learning: Do group members' implicit theories of ability make a difference?

We examined the impact of members' implicit theories of ability on group learning and the mediating role of several group process variables, such as goal-setting, effort attributions, and efficacy beliefs. Comparisons were between 15 groups with a strong incremental view on ability (high incremental theory groups), and 15 groups with a weak incremental view on ability (low incremental theory groups). Groups worked on a computer-based management simulation. The task required the groups to learn the underlying structure of the simulation to be able to control the system effectively. High incremental theory groups set more challenging group goals, attributed their performance more to effort, developed stronger group efficacy, and displayed steeper learning trajectories than low incremental theory groups. Group goals mediated the impact of group members' implicit theories on group learning. Exploratory analyses of the group communication process revealed that members of the high incremental theory groups communicated more openly about the task and maintained a stronger task focus compared with members of the low incremental theory groups. Research on group learning benefits from a stronger individual differences perspective that incooperates variables such as implicit theories of ability as determinants of emerging group processes and outcomes

Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries -- II: Carbon, oxygen, and odd-Z iron-peak abundances of the primary stars

Detailed chemical composition of stars is of prime interest for a range of topics in modern stellar astrophysics, such as the chemical evolution of the Galaxy or the formation, composition, and structure of exoplanets. In this work, we derive the C and O abundances and update Sc, V, Mn, and Co abundances considering hyperfine structure effects (HFS) and correcting for non-local thermodynamical equilibrium (NLTE) for a sample of 196 late-F, G-, and early-K stars with wide resolved M-dwarf companions. We accomplished this by employing the equivalent width (EW) method and high-resolution spectroscopic data. Furthermore, we investigated the distributions of [X/Fe] ratios and [C/O] as a function of metallicity ([Fe/H]) and kinematic population. The observed trends are consistent with previous findings reported in the literature. Additionally, we searched for confirmed exoplanets around our primary stars in the literature and found 24 exoplanets in 17 systems, while none of the M-dwarf companions in our sample presented confirmed exoplanets. In conclusion, our study provides homogeneous abundances from high-resolution spectra for a large sample of FGK primary stars, paving the way for further research on stellar abundances of the M secondaries and exoplanetary science.Comment: Accepted for publication in MNRA

Some viable models for digital public-interest journalism

The supply of public interest journalism that serves the needs of citizens in a democratic society has always been scarce in the media marketplace when compared with sensationalism, gossip, entertainment, propaganda, and misinformation. This scarce commodity, whose market value lies in its credibility and depends on costly investments of time and money in professional research, has frequently required a subsidy, which for more than a century was provided by advertising. Now that this subsidy has mostly been devoured by technological platforms such as Google and Facebook, the industry and profession are developing new models focused on user needs and wants with a trend toward public service rather than profit. This paper uses deductive and critical methodologies to identify the most promising business models used by media companies to counteract the decline in public-interest journalism. Our proposal is that an appropriate business model can be the best way to revitalize media companies. The research is based on Chesbrough’s business model framework applied to 20 leading digital news publications from 16 countries. In addition, we analyze how Covid-19 has impacted those business models