Constructions of thin-tall Boolean spaces

This is an expository paper about constructions of locally compact, Hausdorff, scattered spaces whose Cantor-Bendixson height has cardinality greater than their Cantor-Bendixson width

Analysis of the use and design of rubrics in competency assessment in engineering degrees

Velasco-Martínez, L. C. & Tójar-Hurtado, J. C. (2016). Analysis of the use and design of rubrics in competency assessment in engineering degrees. In F. J. García-Peñalvo (Ed.). Fourth International Conference on Technological Ecosystems for Enhancing Multiculturality. (pp. 177-184). New York, NY.: The Association for Computing MachineryThe defining, implementation and assessment of competencies are challenges for new undergraduate and Master’s degrees which must respond to current education demands. The use of rubrics in universities is considered an instrument of innovation and educational change that transforms assessment practices, both for students and educators. Furthermore, new education, focusing on the development of student competencies, implies a profound modification, not only of assessment approaches, but also of the approach towards education, instruction and teaching. Since their appearance in the university environment, the application of competencies in assessment systems has progressively grown. But, there is yet to be a solid body of knowledge providing evidence of the use of rubrics by educators as assessment instruments. In this study, rubrics have been analysed in 50 educators from the engineering departments of distinct Spanish universities. The rubrics used represent a wide variety of courses and university centres. A comparative analysis allows us to determine how these rubrics are being used (or not) to assess competencies. To do so, the type of works and tasks to which they are applied has been revealed, as well as the technical and pedagogical aspects that are considered by the educators in their design. The results and conclusions allow us to detect the educational needs of the teaching staff that hopes to use rubrics to assess competencies.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Universidad de Salamanca, IUCE, GRIAL, ICP

π-character and depth in scattered Boolean spaces

AbstractThe relationship between π-character and depth for the class of scattered Boolean spaces is studied in [A. Dow, J.D. Monk, Topology Appl. 75 (1997) 183–199]. Some more results on this relationship are then obtained here

Time-series Modelling, Stationarity and Bayesian Nonparametric Methods

In this paper we introduce two general non-parametric first-order stationary time-series models for which marginal (invariant) and transition distributions are expressed as infinite-dimensional mixtures. That feature makes them the first Bayesian stationary fully non-parametric models developed so far. We draw on the discussion of using stationary models in practice, as a motivation, and advocate the view that flexible (non-parametric) stationary models might be a source for reliable inferences and predictions. It will be noticed that our models adequately fit in the Bayesian inference framework due to a suitable representation theorem. A stationary scale-mixture model is developed as a particular case along with a computational strategy for posterior inference and predictions. The usefulness of that model is illustrated with the analysis of Euro/USD exchange rate log-returns.Stationarity, Markov processes, Dynamic mixture models, Random probability measures, Conditional random probability measures, Latent processes.

Una estela funeraria romana en San Andrés de Cameros

El presente artículo edita por primera vez, trancribe y comenta una estela funeraria romana con inscripción encontrada en San Andrés de Cameros (La Rioja)This paper firstly edites, transcribes and comments a roman stela found in San Andrés de Cameros (La Rioja), Spai