Introducción.

Sin resume

José MARTÍNEZ GÁZQUEZ, Óscar DE LA CRUZ PALMA y Cándida FERRERO HERNÁNDEZ (eds.), Estudios de Latín Medieval Hispánico, Florencia, Sismel-Edizioni del Galluzzo, 2011 (Millenio Medievale 92. Strumenti e studi n. s. 30), XII + 1144 pp. ISBN 978-88-8450429-6

Reseña de José Martínez Gázquez, Óscar de la Cruz Palma y Cándida Ferrero Hernández (eds.), Estudios de Latín Medieval Hispánico, Florencia, Sismel-Edizioni del Galluzzo, 2011 (Millenio Medievale 92. Strumenti e studi n. s. 30), XII + 1144 pp. ISBN 978-88-8450429-6

Las privatizaciones. Algunos aspectos generales.

Sin resume

Funciones Zeta en los grafos

Se estudian las funciones zeta de Ihara, Hashimoto y Stark asociadas a los vértices aristas y caminos de los grafos finitos, mostrando las relaciones entre ellas, sus propiedades y las fórmulas determinantales que permiten calcularlas. Se demuestra el teorema del número primo para gafos, análogo del teorema del número primo en aritmétrica, mostrando las similitudes ente las funciones zeta de Riemann y de Ihara. Se describen las construcciones recientes de familias infinitas de grafos regulares de Ramanujan bipartitos de cualquier grado.Máster en Investigación en Matemática

A Small Platform for Astrophysical Research Based on the UPM-Sat 1 Satellite of the Universidad Politécnica de Madrid

UPM-Sat 1 is a small scientific, in-orbit demonstration, educational satellite which has been designed, built, tested, integrated, launched and operated by a team of professors, students, and auxiliary personnel belonging to the Universidad Politécnica de Madrid (UPM). After completion of UPM-Sat 1 Mission a new small satellite, UPM-Sat 2, oriented to low-Earth-orbit scientific mission has been designed. In this paper the different subsystems of UPM-Sat 1 are described and the main characteristics of the second small satellite UPM-Sat 2 are outlined

Direct Metal Laser Fabrication of Cu Slabs from Powder Precursor: Surface Depth of Melt and Furnace Temperature Issues

A DMLF processing unit based on a raster-scanned 80 W CO2 laser beam has been developed to process single layers of metallic powder precursor. The process chamber provides atmosphere control (high vacuum and inert gas refill) besides temperature elevation up to 700 o C. In this work, copper powder precursor is confined inside a refractory steel mask surrounded by an aluminum oxide jacket that acts as insulator. The powder layers can have thicknesses of 0,5 and 1 mm. An infrared pyrometer measures in real time the temperature at one location in the surface of the powder bed. Scan speed, scan step, and furnace temperature have been varied to find combinations of such parameters that render surface melting and maximum densification. Partially melted samples were produced and their mass density was measured. Micro-hardness and surface roughness were also measured along the resolidified surface, the first rendering an average of 80,6 HV compared to the 90-105 HV of oxygen free copper, while the second resulting in an 8 μm Ra value. Maximum melt of depth achieved is ~0,15 mm followed by a sintered layer.Mechanical Engineerin

Estudio geológico-sedimentario de las cuencas terciario-cuaternarias de Monforte de Lemos, Maceda y Quiroga

[Resumen] Las cuencas terciario-cuaternarias de Monforte de Lemas, Maceda y Quiroga están situadas en la Hoja Geológica E. 1 : 200.000 de ORENSE-VERIN (NO. de la Península Ibérica). Estas cuencas no forman parte de una cuenca de mayores dimensiones sino que son cuencas continentales individuales e independientes. Su relleno se ha realizado mediante sistemas deposicionales como abanicos aluviales y transportes en masa. La creación de estas cuencas y su control sedimentario está ligado posiblemente a la acción de fallas en dirección.[Abstract] The Tertiary-Quaternary basins of Monforte de Lemos, Maceda y Quiroga a relocated in the Geological chart E.l: 200.000 of ORENSE-VERIN (NW. of Iberian Penínsule). These basins do not form a part of a bigger basin, but they are individual and indipendent continental basins. Their filling-in has been attained through, depositional system like alluvial fans and mass flows. The orlgln of these bassins and their sedimentary control is possibly related, with the action of strike-slipe fault

Constructed Languages and British Dystopias: Exploring the Role of Nadsat and Newspeak in “A Clockwork Orange” and “1984”

Trabajo de fin de Grado. Grado en Estudios Ingleses. Curso académico 2021-2022El presente trabajo analiza el papel de las lenguas construidas de Nadsat y Newspeak en las obras literarias que las contienen, dos de las novelas más representativas de la ficción distópica británica: La Naranja Mecánica y 1984 respectivamente. El análisis se centrará específicamente en la capacidad que tienen estas lenguas para distanciar al lector de la historia y permitirle reflexionar sobre el lenguaje, sobre su influencia en la creación de una identidad individual y en el pensamiento y el comportamiento de las sociedades.The present paper analyzes the role of the constructed languages of Nadsat and Newspeak in the literary works that contain them, two of the most representative novels of British dystopian fiction: A Clockwork Orange and 1984 respectively. The analysis focuses specifically on the ability these languages have to distance the reader from the story and allow them to reflect on language, on its influence on the creation of an individual identity and on societies' thought and behavior

BQC: A free web service to quality control solar irradiance measurements across Europe

Classical quality control (QC) methods of solar irradiance apply easy-to-implement physical or statistical limits that are incapable of detecting low-magnitude measuring errors due to the large width of the intervals. We previously presented the bias-based quality control (BQC), a novel method that flags samples in which the bias of several independent gridded datasets is larger for consecutive days than the historical value. The BQC was previously validated at 313 European and 732 Spanish stations finding multiple low-magnitude errors (e.g., shadows, soiling) not detected by classical QC methods. However, the need for gridded datasets, and ground measurements to characterize the bias, was hindering the BQC implementation. To solve this issue, we present a free web service, www.bqcmethod.com, that implements the BQC algorithm incorporating both the gridded datasets and the reference stations required to use the BQC across Europe from 1983 to 2018. Users only have to upload a CSV file with the global horizontal irradiance measurements to be analyzed. Compared to previous BQC versions, gridded products have been upgraded to SARAH-2, CLARA-A2, ERA5, and the spatial coverage has been extended to all of Europe. The web service provides a flexible environment that allows users to tune the BQC parameters and upload ancillary rain data that help in finding the causes of the errors. Besides, the outputs cover not only the visual and numerical QC flags but also daily and hourly estimations from the gridded datasets, facilitating the access to raster data.We thank the Instituto de Estudios Riojanos for funding part of the web service within the program Estudios Científicos de Temática Riojana, Spain. This research used resources from the Supercomputing Castilla y Leon Center (SCAYLE, www.scayle.es), funded by the European Regional Development Fund (ERDF). We would also like to thank the EU meteorological networks that freely distribute their datasets and particularly those researchers who helped us in retrieving these data: Aku Riiëla and Anders Lindfors (FMI), Virginie Gorjoux (Météo France), Sandra Andersson (SHMI), and Jakub Walawender (IMGW-PIB). Finally, we thank the CMSAF and ECMWF for freely distributing their products, and particularly Jörg Trentmann, for providing a beta version of CLARA-A2.1. RU is a postdoc from the University of La Rioja working as a visiting scientist at the European Commission’s Joint Research Center (JRC). RU is funded by the Plan Propio de la Universidad de La Rioja, Spain and V Plan Riojano de I+D, Spain . The views expressed here are purely those of the authors and may not, under any circumstances, be regarded as an official position of the European Commission

Legal Issues Concerning P2P Exchange of Educational Materials and Their Impact on E-Learning Multi-Agent Systems

The last years have known an impressive change in the use of technologies for the sharing and dissemination of knowledge, thus affecting deeply all the traditional means used by education in all its shapes and levels. This transformation has not been fully understood by the society at large for its immense impacts and its short life. This paper describes in the question emerging from the clash of the rights to education in a wide sense and the rights derived from authorship and how that issue is affecting the design of e-learning multi-agent tools