Illa gran i fecunds. 'Amphilaphés píeira nesos' (A.R. Arg.IV 982-1222)

Un episodio del retorno de los argonautas, en el Libro IV de Apolonio, inserta bruscamente un escenario homérico. Desde la isla de Eea, donde han sido purificados por Circe, son conducidos bajo la protección de Hera hasta Corcira -Esqueria en Odisea-, en una veloz travesía que ve sucederse sin riesgos los otrora peligrosos escollos de la ruta de Odiseo. La idea de hacer coincidir a los argonautas con los feacios homéricos aparece solo claramente en los poetas helenísticos. Calímaco parece haber dedicado especial atención a la escala feacia, en terminus similares -peso no idénticos- a los de Apolonio',y Filitas menciona unas hadas de Medea y Jason en el palacio de Alcinoa'. Testimonios anteriores asocian asimismo a Medea, Jason y sus hijos con Corcina...

Eisenstein series for principal congruence subgroups of GL(2,Fq[T])

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

Punt d'informació turística de Pineda de Mar

L'objectiu principal d'aquest treball és el d'oferir una bona introducció en el que són els Sistemes d'Informació Geogràfica dins el marc de les bases de dades, atesa la expansió d'aquestes cap a nous reptes de la gestió de la informació en forma de Sistemes d'Informació Geogràfica.

Patient-specific computational hemodynamics of intracranial aneurysms from 3D rotational angiography and CT angiography: an in vivo reproducibility study

Patient-specific simulations of the hemodynamics in intracranial aneurysms can be constructed by using image-based vascular models and CFD techniques. This work evaluates the impact of the choice of imaging technique on these simulations

The "New Political Economy": Two Recent Books

This paper reviews two recent books on Political Economy by Allan Drazen and Torsten Persson and Guido Tabellini. It discusses some problems of the recent Political Economy literature.

Parameterized expectations approach; Some practical issues

We discuss some practical issues related to the use of the Parameterized Expectations Approach (PEA) for solving non-linear stochastic dynamic models with rational expectations. This approach has been applied in models of macroeconomics, financial economics, economic growth, contracttheory, etc. It turns out to be a convenient algorithm, especially when there is a large number of state variables and stochastic shocks in the conditional expectations. We discuss some practical issues having to do with the application of the algorithm, and we discuss a Fortran program for implementing the algorithm that is available through the internet.We discuss these issues in a battery of six examples.

The 'new political economy': Two recent books

This paper reviews two recent books on Political Economy by Allan Drazen and Torsten Persson and Guido Tabellini. It discusses some problems of the recent Political Economy literature.

Why do emerging economies borrow short term?

We argue that one reason why emerging economies borrow short term is that it is cheaperthan borrowing long term. This is especially the case during crises, as in these episodes therelative cost of long-term borrowing increases. We construct a unique database of sovereignbond prices, returns, and issuances at di¤erent maturities for 11 emerging economies from 1990to 2009 and present a set of new stylized facts. On average, these countries pay a higher riskpremium on long-term than on short-term bonds. During crises, the di¤erence between the tworisk premia increases and issuance shifts towards shorter maturities. To illustrate our argument,we present a simple model in which the maturity structure is the outcome of a risk sharingproblem between an emerging economy subject to rollover crises and risk averse internationalinvestors.

Generic finiteness of equilibrium payoffs for bimatrix games

It is shown that in any affine space of payoff matrices the equilibriumpayoffs of bimatrix games are generically finite.

Pro-inflammatory gene expression and neurotoxic effects of activated microglia are attenuated by absence of CCAAT/enhancer binding protein beta

Background. Microglia and astrocytes respond to homeostatic disturbances with profound changes of gene expression. This response, known as glial activation or neuroinflammation, can be detrimental to the surrounding tissue. The transcription factor CCAAT/enhancer binding protein ß (C/EBPß) is an important regulator of gene expression in inflammation but little is known about its involvement in glial activation. To explore the functional role of C/EBPß in glial activation we have analyzed pro-inflammatory gene expression and neurotoxicity in murine wild type and C/EBPß-null glial cultures. Methods. Due to fertility and mortality problems associated with the C/EBPß-null genotype we developed a protocol to prepare mixed glial cultures from cerebral cortex of a single mouse embryo with high yield. Wild-type and C/EBPß-null glial cultures were compared in terms of total cell density by Hoechst-33258 staining; microglial content by CD11b immunocytochemistry; astroglial content by GFAP western blot; gene expression by quantitative real-time PCR, western blot, immunocytochemistry and Griess reaction; and microglial neurotoxicity by estimating MAP2 content in neuronal/microglial cocultures. C/EBPß DNA binding activity was evaluated by electrophoretic mobility shift assay and quantitative chromatin immunoprecipitation. Results. C/EBPß mRNA and protein levels, as well as DNA binding, were increased in glial cultures by treatment with lipopolysaccharide (LPS) or LPS + interferon ¿ (IFN¿). Quantitative chromatin immunoprecipitation showed binding of C/EBPß to pro-inflammatory gene promoters in glial activation in a stimulus- and gene-dependent manner. In agreement with these results, LPS and LPS+IFN¿ induced different transcriptional patterns between pro-inflammatory cytokines and NO synthase-2 genes. Furthermore, the expressions of IL-1ß and NO synthase-2, and consequent NO production, were reduced in the absence of C/EBPß. In addition, neurotoxicity elicited by LPS+IFN¿-treated microglia co-cultured with neurons was completely abolished by the absence of C/EBPß in microglia.