Covariant description of kinetic freeze-out through a finite spacelike layer

The problem of freeze-out (FO) in relativistic heavy-ion reactions is addressed. We develop and analyze an idealized one-dimensional model of FO in a finite layer, based on the covariant FO probability. The resulting post FO phase-space distributions are discussed for different FO probabilities and layer thicknesses.

Regular wave propagation out of noise in chemical active media

A pacemaker, regularly emitting chemical waves, is created out of noise when an excitable photosensitive Belousov-Zhabotinsky medium, strictly unable to autonomously initiate autowaves, is forced with a spatiotemporal patterned random illumination. These experimental observations are also reproduced numerically by using a set of reaction-diffusion equations for an activator-inhibitor model, and further analytically interpreted in terms of genuine coupling effects arising from parametric fluctuations. Within the same framework we also address situations of noise-sustained propagation in subexcitable media.

Spatiotemporal order out of noise

Experimental observations of self-organized behavior arising out of noise are also described, and details on the numerical algorithms needed in the computer simulation of these problems are given.

Regular wave propagation out of noise in chemical active media

A pacemaker, regularly emitting chemical waves, is created out of noise when an excitable photosensitive Belousov-Zhabotinsky medium, strictly unable to autonomously initiate autowaves, is forced with a spatiotemporal patterned random illumination. These experimental observations are also reproduced numerically by using a set of reaction-diffusion equations for an activator-inhibitor model, and further analytically interpreted in terms of genuine coupling effects arising from parametric fluctuations. Within the same framework we also address situations of noise-sustained propagation in subexcitable media.

Spatiotemporal order out of noise

Experimental observations of self-organized behavior arising out of noise are also described, and details on the numerical algorithms needed in the computer simulation of these problems are given.

National Identity and the Preference for State Opting-Out in the Basque Country

We argue that preferences for secession are the expression of a common unobserved mechanisms determining national identity. This paper examines the hypothesis of independence of both preferences for secession (independent Euskadi) and Basque national identity in the light of Akerloff and Kranton (2000). We deal with psychological determinants of individuals' national identity formation as well as those that influence the propensity of individuals to support the secession of their perceived ¿imagined community¿ or nation.. We undertake econometric survey analysis for the Basque Country using a bivariate probit model and publicly available data from the Spanish Centre for Sociological Research. Our results provide robust evidence of a common determination of national identity and political preferences for the secession of the Basque Country consistently with Akerloff and Kranton model.

Out-of-sample forecast tests robust to the choice of window size

This paper proposes new methodologies for evaluating out-of-sample forecastingperformance that are robust to the choice of the estimation window size. The methodologies involve evaluating the predictive ability of forecasting models over a wide rangeof window sizes. We show that the tests proposed in the literature may lack the powerto detect predictive ability and might be subject to data snooping across differentwindow sizes if used repeatedly. An empirical application shows the usefulness of themethodologies for evaluating exchange rate models' forecasting ability.

Els manlleus en la revista “Time Out Barcelona”

El present treball constitueix un estudi i una anàlisi sobre les dades obtingudes del buidatge dels manlleus recollits en dos números de la revista catalana Time Out Barcelona. L’objectiu és aprofundir en el tema dels préstecs i extreure algunes conclusions sobre els tipus d’unitats manllevades i el seu tractament.

Introduction. Women as angel, women as evil: interrogating the boundaries

The chapters collected in this volume are only a small sampling of the fruitwhich carne out ofthe Evil, Women and the Feminine conference held in Prague inMay 2010, hosted by the Inter-Disciplinary.Net. Our hopes are to bring togethersorne of the chapters, in expanded form, which seemed, without previous planning,to speak to each other during the conference and which, herein, more directiyengage with one another, opening up a space for dialogue and interaction. Whilewe have divided the work into four sections, they are not discrete boundaries but, we hope, they work together to elicit an interdisciplinary approach to ourunderstandings of women who push the limits of 'the feminine.'

Introduction. Women as angel, women as evil: interrogating the boundaries

The chapters collected in this volume are only a small sampling of the fruitwhich carne out ofthe Evil, Women and the Feminine conference held in Prague inMay 2010, hosted by the Inter-Disciplinary.Net. Our hopes are to bring togethersorne of the chapters, in expanded form, which seemed, without previous planning,to speak to each other during the conference and which, herein, more directiyengage with one another, opening up a space for dialogue and interaction. Whilewe have divided the work into four sections, they are not discrete boundaries but, we hope, they work together to elicit an interdisciplinary approach to ourunderstandings of women who push the limits of 'the feminine.'

In & Out – 180 habitatges per a gent jove i gent gran Camí Antic de València al Poblenou

Estratègies d’ordenació: L’ordenació proposada vol recollir la hibridesa i complexitat d’espais típica del Poble Nou. Caracteritzat pels espais lliures de mida intermèdia –a cavall entre els dels teixits i els del eixamples – i per la riquesa en les seves articulacions (mitjançant passatges, a través d’edificis,…) ; per la permeabilitat cap a l’interior de l’illa: la connexió dels buits interiors amb els carrers i espais públics annexes o per la variabilitat del gra edificat.És per això que l’edificació no s’entén com una sèrie de blocs aïllats sinó que està concebuda com una gran peça articulada, amb una alçada constant en el volum a carrer i una lleugera variabilitat volumètrica en altura en els diferents volums interiors de igual mòdul i de gra menor, homòleg al del seu context urbà més pròxim.És essencial al projecte la definició de l’espai buit interior de l’illa en relació als habitatges, i la seva relació –a una escala major- amb els espais lliures de l’entorn. L’ordenació proposada configura dos paisatges diferents: un pati més urbà, delimitat en planta baixa per un equipament del barri i al que s’hi aboquen els habitatges per a joves i un altre més tranquil i més tou, un jardí per als més grans, accessible des del carrer i des de l’espai públic contiguEl volum més llarg afegeix una nova inflexió a les que ja té el carrer, ampliant-lo amb un espai amb funció de vestíbul i recuperant així, a partir d’una traça parcel•laria històrica, la direcció de l’Eixample.Els diferents volums es relacionen/articulen mitjançant corredors i espais col•lectius de distintes mesures i qualitats. Espais de relació, de dimensió variable, en diferents situacions relatives –respecte al ple, al sòl- i amb distints caràcters, que van del privat al públic...passant pel col•lectiu.Les galeries i els corredors d'accés als habitatges, protagonistes d'aquests espais híbrids (privats-semiprivats-col•lectius/ interiors-exteriors/ tancats-oberts), es converteixen gràcies a la flexibilitat en el tancament de la unitat d'habitació en espais d'intercanvi, on la variabilitat en l'ús permet diferents apropiacions de l'espai col•lectiu.La superposició en altura d'aquests espais funciona com una estructura lleugera adossada a la façana, és una epidermis complexa amb aparença de bastida.L’edificació té la voluntat de tancar-se a carrer amb una façana poc perforada, que llisca indiferent al carrer, i d’obrir-se a l’interior de l’illa, a sud, on es torna complexa, amb successives pells i tamisos...

Redefining dropping out in online higher education: a case study from the UOC

In recent years, studies into the reasons for dropping out of higher education (including online education) have been undertaken with greater regularity, parallel to the rise in the relative weight of this type of education, compared with brick-and-mortar education. However, the work invested in characterising the students who drop out of education, compared with those who do not, appears not to have had the same relevance as that invested in the analysis of the causes. The definition of dropping out is very sensitive to the context. In this article, we reach a purely empirical definition of student dropping out, based on the probability of not continuing a specific academic programme following several consecutive semesters of "theoretical break". Dropping out should be properly defined before analysing its causes, as well as comparing the drop-out rates between the different online programmes, or between online and on-campus ones. Our results show that there are significant differences among programmes, depending on their theoretical extension, but not their domain of knowledge.

Fiscal sustainability and fiscal shocks in a dollarized and oil-exporting country: Ecuador

This paper investigates the fiscal sustainability of an emerging, dollarized, oil-exporting country: Ecuador. A cointegrated VAR approach is adopted in testing, first, if the intertemporal budget constraint is satisfied in Ecuador and, second, in identifying the permanent and transitory shocks that affect a fiscal policy characterized by inertia and a heavy dependence on oil revenues. Following confirmation that the debt-GDP ratio does not place the Ecuadorian budget under any pressure, we reformulate the model and identify two forces that push the fiscal system out of equilibrium, namely, economic activity and oil revenues implemented in the government budget. We argue that Ecuador needs to recover control of its monetary policy and to promote the diversification of its economy in order that non-oil tax revenues can replace oil revenues as a pushing force. Finally, we calculate quarterly elasticities of tax revenues with respect to Ecuador’s GDP and that of eight Eurozone countries. We illustrate graphically how the Eurozone countries with low positive or high negative elasticities’ levels suffer debt problems after the crisis. This finding emphasizes the pressing need for Ecuador to strengthen the connection between its tax revenues and output, and also suggests that the convergence of these elasticities in the Eurozone might contribute to the success of an eventually future fiscal union.

Singling out individual inventors from patent data

An increasing number of studies in recent years have sought to identify individual inventors from patent data. A variety of heuristics have been proposed for using the names and other information disclosed in patent documents to establish who is who in patents. This paper contributes to this literature by describing a methodology for identifying inventors using patents applied to the European Patent Office, EPO hereafter. As in much of this literature, we basically follow a threestep procedure : 1- the parsing stage, aimed at reducing the noise in the inventor’s name and other fields of the patent; 2- the matching stage, where name matching algorithms are used to group similar names; and 3- the filtering stage, where additional information and various scoring schemes are used to filter out these similarlynamed inventors. The paper presents the results obtained by using the algorithms with the set of European inventors applying to the EPO over a long period of time.

Sistema de notificación y consulta de alertas de Dynamics AX2012 para aplicación en Windows Phone mediante protocolo push

Aplicación de Windows Phone que recibe notificaciones push mediante el servicio de Microsoft Push Notification Service cada vez que se genera una alerta en el ERP Dynamics AX 2012, una vez se recibe la notificación, la aplicación puede consultar la información de la alerta mediante un servicio web y gestionarla al igual que se hace en Dynamics AX 2012.