Influencia del vehículo eléctrico en la red eléctrica, en función del comportamiento social.

[ES]En la actualidad, el modelo de transporte apenas ha avanzado en el intento de frenar el Cambio Climático o en el cuidado del medio ambiente. Además, el gran negocio que existe detrás del petróleo hace que este tipo de transporte sea poco sostenible. Es por eso que se está desarrollando, a nivel nacional e internacional, una solución a dicho problema que es el uso del vehiculó eléctrico (VE). La introducción masiva del VE permitirá el uso extensivo de fuentes de energía no contaminantes e intermitentes, como son las energías renovables. Sin embargo, los VEs están lejos de ser una tecnología probada. Existen aún muchos problemas en torno a él que deben ser resueltos, entre ellos se encuentra el desarrollo de las baterías, su modelo de negocio y coste o la influencia de la conexión del VE sobre la red eléctrica. Este último problema, estará muy influenciado por el comportamiento social del futuro conductor, lo cual es el eje central del proyecto.

Green and red upconversion luminescence in ytterbium-sensitized erbrium-doped novel lead-free germanium bismuth lanthanum glass

Structural and infrared-to-visible upconversion fluorescence properties in ytterbium-sensitized erbrium-doped novel lead-free germanium bismuth-lanthanum glass have been studied. The structure of lead-free germanium-bismuth-lanthanum glass was investigated by peak-deconvolution of Raman spectrum, and the structural information was obtained from the peak wavenumbers. Intense green and red emissions centered at 525, 546, and 657 nm, corresponding to the transitions 2H(11/2) -> I-4(15/2), S-4(3/2) -> I-4(15/2), and F-4(9/2) -> I-4(15/2), respectively, were observed at room temperature. The quadratic dependence of the 525, 546, and 657 nm emissions on excitation power indicates that a two-photon absorption process occurs under 975 nm excitation. This novel lead-free germanium-bismuth-lanthanum glass with low maximum phonon energy (similar to 751 cm(-1)) can be used as potential host material for upconversion lasers. (c) 2005 Published by Elsevier B.V.

Virtualización de red basada en L2PNV para OpenStack

[ES]Este proyecto consiste en obtener un mayor control por parte del usuario a nivel de red en entornos con máquinas virtuales creadas a partir de la plataforma OpenStack. Cada vez que se arranca o inicia una máquina virtual en OpenStack, los parámetros de red se asignan por defecto, haciendo muy difícil su gestión y control tanto para investigación como para mantenimiento. Si estos parámetros siguieran un mismo patrón para cada proyecto o usuario sería mucho más sencillo tener controlado cada interfaz de red, pudiendo así gestionarlos de una manera más eficiente. Para realizar esta tarea será necesario introducir unos cambios en el código fuente de OpenStack, adaptándolo para que cumpla con nuestros requerimientos.

Two-photon excited red upconversion luminescence of thulium ions doped GeS2-In2S3-CsI glass

We report a novel phenomenon in GeS2-In2S3-CsI chalcohalide glass doped with Tm3+ ions. Under irradiation with an 808 nm laser diode, a bright red emission centered at 700 nm is observed for the first time in this glass. The log-log correlation between integrated emission intensity and pump power reveals that a two-photon absorption process is involved in the phenomenon, suggesting that the F-3(3,2) -> H-3(6) transition of Tm3+ ions is responsible for the appearance of the red emission. The results indicate that the indium (In) based chalcohalide glass containing Tm3+ ions is expected to find applications in visible lasers, high density optical storage and three-dimensional color displays. (C) 2009 Elsevier B.V. All rights reserved.

The Spanish corporate structure through interlocking directorates

[EN] The aim of this paper is to determine to what extent globalization pressures are changing interlocking directorate networks modeled on continental capitalism into Anglo-Saxon models. For this purpose we analyse the Spanish network of interlocks, comparing the present structure (2012) with that of 1993 and 2006. We show how, although Spanish corporative structure continues to display characteristics of the continental economies, some major banks are significantly reducing industrial activity. Nevertheless, the financial organizations continue to maintain a close relationship with sectors such as construction and services. The analysis of the network of directorates shows a retreat in activity of industrial banking in Spain. Two large Spanish financial institutions, BSCH and La Caixa, continue to undertake activities of industrial banking in 2006, but this activity is significantly reduced in 2012. According to the theories on the role of the interlocking directorates, the companies in these sectors assure their access to banking credit by incorporating advisors from financial organizations to their board of directors. We cannot conclude that the structure of the Spanish corporate network has become a new case of Anglo-Saxon structure, but we got indications that are becoming less hierarchic as banks seem to slowly abandon centrality positions. This is especially salient if we compare the networks of 2006 and 2012, which show a continuing decrease of the role of banks and insurance companies in the network.

Fangtechnische Versuche mit hochstauenden Grundschleppnetzen im Gebiet der Georges-Bank

Bericht über die 35. Reise des FFS "Walther Herwig" vom 20.8. - 30.9.1970