Embedding theorems of funcitional classes, III

In this paper we obtain the necessary and sufficient conditions for embedding results of different function classes. The main result is a criterion for embedding theorems for the so-called generalized Weyl-Nikol'skii class and the generalized Lipschitz class. To define the Weyl-Nikol'skii class, we use the concept of a (λ,β)-derivative, which is a generalization of the derivative in the sense of Weyl. As corollaries, we give estimates of norms and moduli of smoothness of transformed Fourier series.

Embedding theorems of function classes, IV

Vegeu el resum a l'inici del document del fitxer adjunt

Embedding theorems of function classes, II

Vegeu el resum a l'inici del document del fitxer adjunt.

Contractive metrics for a Boltzmann equation for granular gases: diffusive equilibriaThe Patterson-Sullivan embedding and minimal volume entropy for outer space

We quantify the long-time behavior of a system of (partially) inelastic particles in a stochastic thermostat by means of the contractivity of a suitable metric in the set of probability measures. Existence, uniqueness, boundedness of moments and regularity of a steady state are derived from this basic property. The solutions of the kinetic model are proved to converge exponentially as t→ ∞ to this diffusive equilibrium in this distance metrizing the weak convergence of measures. Then, we prove a uniform bound in time on Sobolev norms of the solution, provided the initial data has a finite norm in the corresponding Sobolev space. These results are then combined, using interpolation inequalities, to obtain exponential convergence to the diffusive equilibrium in the strong L¹-norm, as well as various Sobolev norms.

The Patterson-Sullivan embedding and minimal volume entropy for outer space

"Vegeu el resum a l'inici del document del fitxer adjunt."

Embedding theorems of function classes, I

"Vegeu el resum a l'inici del document del fitxer adjunt."

Still in the Era of Area Studies? Political-Scientific Perspectives on European Competition Policy in the 2000s

This note reviews the political-scientific literature on European competition policy (ECP) in the 2000s. Based on a data set extracted from four well-known journals, and using an upfront methodology and explicit criteria, it analyzes the literature both quantitatively and qualitatively. On the quantitative side, it shows that, although a few sub-policy areas are still neglected, ECP is not the under-researched policy it used to be. On the qualitative side, the literature has greatly improved since the 1990s: Almost all articles now present a clear research question, and most advance specific theoretical claims/hypotheses. Yet, improvements can be made on research design, statistical testing, and, above all, state-of-the-art theorizing (e.g. in the game-theoretical treatment of delegation problems). Indeed, it is paradoxical that ECP specialists do not pay more attention to theoretical questions which are so central to the actual policy area they study.

Indigenous people's mobilization and their struggle for rights in Colombia

This text aims at showing the history of indigenous peoples’ mobilization in Colombia, the effects that it has brought about on Colombian democracy and political system, and the state’s reactions to their claims and actions. It will show how they have moved from class-based claims to a politics where identity claims have been central in their agenda and part of their strategies to negotiate with the state. It will also show the existing constitutional and legal framework that recognizes the rights of indigenous peoples, despite the context of persecution, murder, and forced displacement.

Pau, conflicte i seguretat a l'Àfrica. Nous reptes i noves perspectives. Barcelona, 3 a 5 de novembre de 2010

Relatoria de las jornadas internacionales “Paz, Conflicto y seguridad en África. Nuevos retos y Nuevas perspectivas” realizadas en Barcelona en noviembre de 2010 y coorganizadas por el Instituto Catalán Internacional para la Paz (ICIP), la Casa África y el Centre de Cultura Contemporània de Barcelona (CCCB). Las jornadas tenían por objeto analizar las situaciones vinculadas a la paz, los conflictos y la seguridad en África, pero tratando de huir de las visiones pesimistas y adoptando una perspectiva constructiva. Por lo tanto no centrada en los conflictos violentos sino también en las experiencias de paz y resolución de conflictos, y fundamentada en las cosmovisiones africanas, intentando abandonar los clichés que ofrecen una imagen negativa i estereotipada de África.

Matrimoni homosexual : perspectives

Treball de recerca sobre la llei que va aprovar el matrimoni homosexual a Espanya que pretén respondre a la pregunta: Quines reaccions socials, jurídiques, religioses i d'associacions homosexuals va generar l'aprovació de la llei que permet el matrimoni entre persones del mateix sexe a Espanya?

Gènere i bilingüisme: connectant experiències i teories. Introductory paper in Santaemilia, José, Patricia Bou, Sergio Maruenda i Gora Zaragoza International Perspectives on Gender and Language

Peer-reviewed

La serra de les Salines, entre la crisi i les noves perspectives de futur

Es fa una breu aproximació als trets més representatius que caracteritzen la geografía humana de la Serra de les Salines i d'alguns dels canvis mes significatius que ha experimentat aquesta área de l' interior de l'Alt Empordá durant el darrer segle

Perspectives of auto-correcting lens distortions in mosaic-based underwater navigation

When unmanned underwater vehicles (UUVs) perform missions near the ocean floor, optical sensors can be used to improve local navigation. Video mosaics allow to efficiently process the images acquired by the vehicle, and also to obtain position estimates. We discuss in this paper the role of lens distortions in this context, proving that degenerate mosaics have their origin not only in the selected motion model or in registration errors, but also in the cumulative effect of radial distortion residuals. Additionally, we present results on the accuracy of different feature-based approaches for self-correction of lens distortions that may guide the choice of appropriate techniques for correcting distortions

Perspectives sobre la participació juvenil: cal modificar o incorporar la participació puntual?

S’analitza quina és la situació de la participació juvenil en el context social, econòmic i cultural en el que vivim actualment, així com les diferents perspectives que conviuen al respecte. Després es descriuen algunes de les diferents formes de participació que existeixen en l’actualitat, focalitzant-nos en les perspectives que cada un té sobre la participació puntual/individual. Per últim, s’exposa un cas concret de participació sobre els consells municipals de la ciutat de Mataró, i de manera específica, s’analitza el Consell Municipal de Joventut de la ciutat. L’eix central del treball és posar de manifest el dualisme existent vers la participació puntual, esporàdica o individual; dualisme entre si cal incorporar i/o acceptar aquest tipus de participació perquè és el resultat del nostre temps i és quelcom positiu; o bé, si el que cal és modificar la participació puntual perquè va en contra de l’ideal participatiu on l’associacionisme és la clau per crear teixit social i arribar a una plena ciutadania