Construcción de escenarios para el aprendizaje de conceptos fundamentales y estrategias de solución de problemas en informática y geometría

En este cursillo se presentará una alternativa para la enseñanza-aprendizaje de conceptos fundamentales y estrategias de solución de problemas en informática y geometría elemental, basada en escenarios que incorporan la experimentación con modelos físicos y virtuales de juegos discretos, GeoGebra y los sistemas formales

Segregation-induced grain boundary electrical potential in ionic oxide materials: A first principles model

A first principles continuum analytical model for cationic segregation to the grain boundaries in complex ceramic oxides is presented. The model permits one to determine the electric charge density and the segregation-induced electric potential profiles through the grain and can be extrapolated to the range of nanostructured grain sizes. The theoretical predictions are compared with existing data for yttria-stabilized tetragonal zirconia polycrystals. The implications for physical properties (mainly high temperature plasticity and hardening behaviour) are then discussed.Gobierno de España MAT2009-14351-C02-01, MAT2009-14351-C02-0

Tratamiento mediático sobre la propuesta de adhesión de Palestina como un Estado ante la ONU en los diarios El Tiempo, El Espectador, El Heraldo y El País

Esta investigación monográfica expone el análisis de contenido de un observatorio de medios, de cuatro periódicos colombianos, realizado durante un periodo de seis meses en torno a la propuesta Palestina de ser adherida como un Estado ante la Organización de Naciones Unidas, presentada el 23 de septiembre de 2011 por el presidente de la Autoridad Nacional Palestina, Mahmoud Abbas. En este ejercicio se analizaron 85 noticias de acuerdo con unas variables de orden cuantitativo y cualitativo, acordes a las teorías de la agenda setting y framing

Multispectral Mid-Infrared Camera System for Accurate Stand-Off Temperature and Column Density Measurements on Flames

Accurate measurement of temperature in flames is a challenging problem that has been successfully addressed by hyperspectral imaging. This technique is able to provide maps of not only temperature T (K) but also of column density Q (ppm-m) of the main chemical species. Industrial applications, however, require cheaper instrumentation and faster and simpler data analysis. In this work, the feasibility and performance of multispectral imaging for the retrieval of T and QCO2 in flames are studied. Both the hyperspectral and multispectral measurement methods are described and applied to a standard flame, with known T and QCO2, and to an ordinary Bunsen flame. Hyperspectral results, based on emission spectra with 0.5 cm resolution, were found in previous works to be highly accurate, and are thus considered as the ground truth to compare with multispectral measurements of a mid-IR camera (3 to 5 mum) with a six interference filter wheel. Maps of T and Q obtained by both methods show that, for regions with T -1300 K, the average of relative errors in multispectral measurements is for T (and can be reduced to 2.5% with a correction based on a linear regression) and for Q. Results obtained with four filters are very similar; results with two filters are also similar for T but worse for Q.The authors acknowledge the financial support from EURAMET through 17IND04 EM PRESS 2 project. This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union Horizon 2020 research and innovation programme. This work has been supported also by the Madrid Government (Comunidad de Madrid-Spain) under the Multiannual Agreement with UC3M in the line of Excellence of University Professors (EPUC3M14), and in the context of the V PRICIT (Regional Programme of Research and Technological Innovation)

Vivaria in Doliis. Ceramic Jars for Dormouse Fattening Found in Arucci

The excavation of the north house at the archaeological site of Arucci (Aroche, Huelva) has provided interesting data for understanding city planning in general, and domestic architecture in particular. Investigation of their environments has allowed the identification of the distinct functions for which they were intended, including two significant tabernae that were connected to one of the main thoroughfares of the city. In one of them, an interesting set of ceramic fragments has been recovered, whose features allow us to recognize them as ceramic containers for fattening the much-appreciated dormouse. This find signifies an interesting novelty in the archaeological record of the city from which various aspects of the diet of its inhabitants can be inferred, as well as the breeding and production of the rodents.This work is a part of the activities carried out in the General Research Project ‘La Ciudad de Arucci Turobriga (Aroche, Huelva), Consejería de Cultura, Turismo y Deporte, Junta de Andalucía’ (Ref. Ref.: SIDPH/DI/PGG. Expt. 12396)