Listado de revisores 2015

Los artículos publicados en Revista CIDOB d’Afers Internacionals pasan por un riguroso proceso de evaluación externa por pares (peer review) de anonimato doble. Este documento es un listado de los revisores de 2015

Texture mapping in a distributed environment

This paper presents a tool for texture mapping in a distributed environment. A parallelization method based on the master-slave model is described. The purpose of this work is to lower the image generation time in the complex 3D scenes synthesis process. The experimental results concerning the speedup of texture mapping algorithm are also presented.

Repensando a teoria pós-keynesiana da acumulação à luz da lei da entropia

This work aims to reconsider Post-Keynesian categories related to Accumulation of Capital in light of the Entropy Law, such as defined by Georgescu-Roegen (1971) and to criticize neoclassical environmental economics by means of such reconsidered Post-Keynesian categories. In order to accomplish this purpose, the section 2 shows a review of the main Post-Keynesian late works, detaching their omissions related to the entropic phenomenon. Section 3 summarizes the perspective of Nicholas Georgescu-Roegen with regard to the Entropy Law. Section 4 reconsiders the Post-Keynesian notions of productive work and investment in light of the approach of Georgescu-Roegen. Similarly, section 6 aims to discuss the Post-Keynesian notions of short and long runs, as well as section 7 reconsiders notions of uncertainty, prices and productivity in light of the same above mentioned theoretical position originated from the work of Georgescu-Roegen. Summing up, the paper aims to adequate some of the Post-Keynesian categories in order to prepare them to the critical debate with neoclassical economics

Low-Noise Amplification of a Continuous Variable Quantum State

We present an experimental realization of a low-noise, phase-insensitive optical amplifier using a four-wave mixing interaction in hot Rb vapor. Performance near the quantum limit for a range of amplifier gains, including near unity, can be achieved. Such low-noise amplifiers are essential for so-called quantum cloning machines and are useful in quantum information protocols. We demonstrate that amplification and ``cloning'' of one half of a two-mode squeezed state is possible while preserving entanglement.Comment: To appear in Physical Review Letters July 3rd. 4 pages, 4 figure

Dependency and autonomy: an anthropological approach from the care of the elderly

Utilizando como hilo conductor las políticas de asistencia a la dependencia y las políticas de Envejecimiento activo en España, y con el soporte de algunos ejemplos etnográficos sacados del trabajo de campo de la autora, el artículo propone una reflexión acerca de los conceptos de dependencia, autonomía y vulnerabilidad a través de la relación existente entre envejecimiento y cuidado. El análisis presentado muestra la existencia de unas contradicciones entre el discurso y la práctica de estas políticas, aparentemente antagónicas en sus definiciones, planteando la necesidad de un cambio de perspectiva que incorpore los conceptos de interdependencia y autonomía relacional en los estudios empíricos y en las políticas sociales, para ir más allá de la distinción entre cuidador (sujeto independiente) y receptor de cuidado (objeto dependiente).Through a review of care policies and active aging policies in Spain, relying on some ethnographic examples drawn from the author's fieldwork, the article proposes a critical reflection of such concepts as dependency, autonomy and vulnerability and the relationship between aging and elderly care. The analysis shows the existence of some contradictions between discourse and practice of these policies, apparently antagonistic in their definitions, encouraging a change of perspective to include the concept of interdependence and relational autonomy in scientific production and in social policies, to go beyond distinction between care-giver (independent subject) and care-receivers (dependent object)

No sense la meva música: la música com a fet social

Knowing that society is not a mere sum of individuals but the result of interacting individuals, and individuals are also the result of this interaction, this article draws from the idea that this interaction, that construct us as individuals, happens also through music. The importance that music has in the process of making up a society is clearly brought to light in the role that it plays in the three basic parameters of the social logics: identity, social order and the need for exchange. But it is not only that we as individuals would be incomprehensible without the constant exchange with other people. Without many of the things that surround us, we ontologically could not be. And in this regard, music, as technology, can be also conceived as a real extension of our body (McLuhan).Tot reconeixent que la societat no és la mera suma d’individus sinó el resultat d’individus interactuant, i els individus són així mateix el resultat de la seva interacció, l’article pren com a punt de partença la idea que aquesta interacció que ens construeix com a individus es produeix entre d’altres molts recursos mitjançant la música. La importància que té la música a la tasca de fer societat es posa especialment de manifest en el paper que juga en tres paràmetres bàsics de la lògica social: la identitat, l’ordre social i la necessitat de l’intercanvi. Però no és tan sols que la persona sigui incomprensible sense el constant intercanvi amb altres individus; sense moltes de les coses que l’envolten, ontològicament, tampoc podria ésser. I la música, en aquest sentit, en tant que tecnologia, pot arribar a entendre’s així mateix como una veritable extensió del nostre cos (McLuhan)

POVMs: a small but important step beyond standard quantum mechanics

It is the purpose of the present contribution to demonstrate that the generalization of the concept of a quantum mechanical observable from the Hermitian operator of standard quantum mechanics to a positive operator-valued measure is not a peripheral issue, allegedly to be understood in terms of a trivial nonideality of practical measurement procedures, but that this generalization touches the very core of quantum mechanics, viz. complementarity and violation of the Bell inequalities.Comment: Contribution to Proceedings of the Workshop `Beyond the quantum', Leiden, May/June 200

Tensile deformation of silver micro-wires of small thickness-to-grain-size ratios

A recent letter from us has indicated that the tensile proof strength of polycrystalline Ag micro-wires, with thicknesses in the range from 20 to 50. μm, depends strongly on the specimen size (t) and weakly on the grain size (d) when t/. d becomes smaller than about 3. In this work, we report further coupled effects of specimen size and grain size in the regime when their ratio is small. At a given grain size from 3 to 40. μm, the tensile elongation was found to decrease as the wire thickness decreases, and as the t/. d ratio gets smaller than about 3, the tensile elongation loses its dependence on the grain size. The work-hardening rate was found to scale approximately with the proof strength, and so they should be controlled by the same metallurgical factors. Transmission electron microscopy examination of the dislocation microstructures showed that in the regime where the grain size dominates strength and ductility, the dislocation density rises rapidly on deformation, but in the regime where the specimen thickness dominates strength and ductility, the dislocation density remains on the same order of magnitude as the undeformed state. The easy escape of dislocations from the specimen is thought to be the reason for the observed size effect of strength. © 2012 Elsevier B.V.postprin