Weighted norm inequalities for Fourier transforms of radial functions

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

Revisió de la Guia d’avaluació del testimoni en violència de gènere (GAT-VIG-R)

Nou document produït pels professionals dels equips d’assessorament tècnic penal de Catalunya (EAT penal) en l’àmbit de la jurisdicció d’adults, elaborat en el context del programa Compartim del Centre d’Estudis Juridics i Formació Especialitzada del Departament de Justícia. En aquest cas, es tracta de la revisió de la Guia d’avaluació del testimoni en violència de gènere (GAT-VIG-R) amb mostres dels EAT penal de Catalunya. Transcrivim una part de la presentació de l’obra on els mateixos autors ens expliquen els motius de la seva elaboració: “És dins els peritatges psicològics on se’ns encomana una de les tasques més delicades i complexes que duem a terme els psicòlegs dels EAT penal: l’anàlisi de la credibilitat dels testimonis. És en aquest camp que decidim, l’any 2009, donar un pas més enllà i analitzar en profunditat les tècniques que hi ha actualment sobre l’anàlisi de la credibilitat del testimoni adult en violència de gènere per tal de valorar la seva possible eficàcia i la seva posterior administració. El present document suposa el primer pas per millorar l’avaluació del testimoni en violència de gènere dins dels equips d’assessorament tècnic penal mitjançant la revisió de la Guia d’avaluació del testimoni en violència de gènere, instrument publicat al nostre país el 2007 per Juárez, J.R.; Mateu, A. i Sala, E. Així el present treball és el punt de partida per tal d’obtenir un primer perfil sociodemogràfic, psicològic i del testimoni en casos de violència de gènere creïbles amb l’objectiu que en properes recerques puguem arribar a obtenir criteris objectius per tal de discernir els testimonis creïbles en violència de gènere d’aquells que no ho són.”

Revisiting the size-R&D productivity relation: introducing the mediating role of decision-making style on the scale and quality of innovative output

We develop a mediation model in which firm size is proposed to affect the scale and quality of innovative output through the adoption of different decision styles during the R&D process. The aim of this study is to understand how the internal changes that firms undergo as they evolve from small to larger organizations affect R&D productivity. In so doing, we illuminate the underlying theoretical mechanism affecting two different dimensions of R&D productivity, namely the scale and quality of innovative output which have not received much attention in previous literature. Using longitudinal data of Spanish manufacturing firms we explore the validity of this mediation model. Our results show that as firms evolve in size, they increasingly emphasize analytical decision making, and consequently, large-sized firms aim for higher-quality innovations while small firms aim for a larger scale of innovative output.

Especificación de procesos en industria química para la implantación de la producción en SAP R/3

En este proyecto se ha realizado un estudio en el campo del modelado de los procesos de negocio y sus notaciones. En concreto, se han analizado las notaciones BPMN y UML que se han usado para especificar los procesos en la gestión de la fabricación de una empresa química. Tras estas especificaciones, se ha realizado la comparación de estas dos notaciones con el fin de escoger la mejor de ellas para especificar procesos de negocio. A partir de la especificación de procesos, se ha descrito la implantación del módulo de fabricación de SAP en la misma empresa.

Superatomic Boolean algebras constructed from strongly unbounded functions

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

Welfare Maximizing Contest Success Functions when the Planner Cannot Commit

We analyze how a contest organizer chooses optimally the winner when the contestants' efforts are already exerted and commitment to the use of a given contest success function is not possible. We de…ne the notion of rationalizability in mixed-strategies to capture such a situation. Our approach allows to derive different contest success functions depending on the aims and attitudes of the decider. We derive contest success functions which are closely related to commonly used functions providing new support for them. By taking into account social welfare considerations our approach bridges the contest literature and the recent literature on political economy. Keywords: Endogenous Contests, Contest Success Function, Mixed-Strategies. JEL Classi…cation: C72 (Noncooperative Games), D72 (Economic Models of Political Processes: Rent-Seeking, Elections), D74 (Conflict; Conflict Resolution; Alliances)

Multinationals, R&D and productivity: Evidence for UK Manufactoring firms

In this study we analyze multinationality (domestic-based firms vs. multinationals) and foreignness (foreign vs. domestic firms) effects in the returns of R&D to productivity. We follow a two-step strategy. In the first step, we consistently ''s productivity by GMM and numerically compute the sample distribution of the R&D returns. In the second step, we use stochastic dominance techniques to make inferences on the multinationality and foreignness effects. Results for a panel of UK manufacturing firms suggest that multinationality and foreignness effects operate in an opposite way: whilst the multinationality effect enhances R&D returns, the foreignness diminishes them.

Estimation of parametric and nonparametric models for univariate claim severity distributions - an approach using R

This paper presents an analysis of motor vehicle insurance claims relating to vehicle damage and to associated medical expenses. We use univariate severity distributions estimated with parametric and non-parametric methods. The methods are implemented using the statistical package R. Parametric analysis is limited to estimation of normal and lognormal distributions for each of the two claim types. The nonparametric analysis presented involves kernel density estimation. We illustrate the benefits of applying transformations to data prior to employing kernel based methods. We use a log-transformation and an optimal transformation amongst a class of transformations that produces symmetry in the data. The central aim of this paper is to provide educators with material that can be used in the classroom to teach statistical estimation methods, goodness of fit analysis and importantly statistical computing in the context of insurance and risk management. To this end, we have included in the Appendix of this paper all the R code that has been used in the analysis so that readers, both students and educators, can fully explore the techniques described

Group strategy-proof social choice functions with binary ranges and arbitrary domains: characterization results

We define different concepts of group strategy-proofness for social choice functions. We discuss the connections between the defined concepts under different assumptions on their domains of definition. We characterize the social choice functions that satisfy each one of them and whose ranges consist of two alternatives, in terms of two types of basic properties.

The link between public support and private R&D effort: What is the optimal subsidy?

The effectiveness of R&D subsidies can vary substantially depending on their characteristics. Specifically, the amount and intensity of such subsidies are crucial issues in the design of public schemes supporting private R&D. Public agencies determine the intensities of R&D subsidies for firms in line with their eligibility criteria, although assessing the effects of R&D projects accurately is far from straightforward. The main aim of this paper is to examine whether there is an optimal intensity for R&D subsidies through an analysis of their impact on private R&D effort. We examine the decisions of a public agency to grant subsidies taking into account not only the characteristics of the firms but also, as few previous studies have done to date, those of the R&D projects. In determining the optimal subsidy we use both parametric and nonparametric techniques. The results show a non-linear relationship between the percentage of subsidy received and the firms’ R&D effort. These results have implications for technology policy, particularly for the design of R&D subsidies that ensure enhanced effectiveness.

Participació de Catalunya en convocatòries del 7è Programa marc d'R+D de la UE. Període 2007-2009

Resum de l'informe "Participació de Catalunya en convocatòries del 7è Programa marc d'R+D de la UE. Període 2007-2009" elaborat per investigadors del Grup de Recerca AQR - Institut de Recerca en Economia Aplicada (IREA) de la Universitat de Barcelona, que pretén donar a conèixer la realitat de la participació catalana en el 7è Programa Marc de la Unió Europea, el principal instrument europeu de finançament de la recerca, durant el període 2007-2009.

Green vs. Lempert functions: a minimal example

The Lempert function for a set of poles in a domain of Cn at a point z is obtained by taking a certain infimum over all analytic disks going through the poles and the point z, and majorizes the corresponding multi-pole pluricomplex Green function. Coman proved that both coincide in the case of sets of two poles in the unit ball. We give an example of a set of three poles in the unit ball where this equality fails.

R&D cooperation between Spanish firms and scientific partners: what is the role of tertiary education?

This paper explores the factors that determine firm’s R&D cooperation with different partners, paying special attention on the role of tertiary education (degree and PhDs level) in facilitating the connection between the firms and the to scientific bodies (technology centres, public research centres and universities). Here, we attempt to answer two questions. First, are innovative firms that carry out internal and external R&D activities more likely to cooperate on R&D projects with other partners? Second, do Spanish innovative firms with a high participation of researchers with degrees or PhDs tend to cooperate more with scientific partners? To answer both questions we apply a three-dimensional approach on a firm level Panel Data with a sample of 4.998 manufacturing and services Spanish firms. First, we run a complementary test between external R&D acquisition and skilled research workers and find that firms which carry out external R&D activities obtain a greater return on R&D cooperation when they have skilled workers in R&D, especially in high-tech manufactures and KIS services. Second, we carry out a 2-step tobit model to estimate, in the first stage, the determinants that explain whether Spanish innovative firms cooperate or not; and in the second stage the factors that affect the choice of partners. And third, we apply an ordered probit model to test the marginal effects of explanatory variables on the different partners. Here we contrast some of the most interesting empirical hypotheses of previous studies, and which emphasize the role of employees with degrees and PhDs in facilitating cooperative R&D between firms and scientific partners.