High-School Dropouts and Transitory Labor Market Shocks: The Case of the Spanish Housing Boom

This paper addresses the implications of transitory changes in labor market conditions for low versus high educated workers on the decision to acquire education. To identify this effect, I use the improvement in the labor market prospects of low educated workers motivated by the increases in employment and wages in the construction sector during the recent housing boom. The estimation strategy is based on the fact that changes in the labor market driven by the construction sector affect only men. Increases in construction activity are found to increase men's propensity to drop out of high-school, relative to women. According to this finding, policies promoting education should strengthen when in the presence of transitory shocks in the labor market that make dropping out more attractive.High-school dropout; housing boom; Spain

High-School Dropouts and Transitory Labor Market Shocks: The Case of the Spanish Housing Boom

This paper addresses the implications of transitory changes in labor market conditions for low versus high educated workers on the decision to acquire education. To identify this effect, I use the improvement in the labor market prospects of low educated workers motivated by the increases in employment and wages in the construction sector during the recent housing boom. The estimation strategy is based on the fact that changes in the labor market driven by the construction sector affect only men. Increases in construction activity are found to increase men's propensity to drop out of high-school, relative to women. According to this finding, policies promoting education should strengthen when in the presence of transitory shocks in the labor market that make dropping out more attractive.high-school dropout, housing boom, Spain

Explanatory Audiovisual About CPS Process

Explanatory Audiovisual about CPS ProcessWith this Master’s Project, my aim is to create a medium to help raise awareness of Creative Problem Solving . To this end, I believe that the creation of audiovisual material could provide an excellent medium to be used as a support for explanation sessions, and that it will facilitate understanding, specially for the Spanish and Basque Country’s market, where the CPS process is still very unknown.The idea behind creating this material, or the necessity to do so, arose from several educational, facilitation and training sessions that I have run. When working with groups of students, company workers or organizations, I had the feeling that it was difficult for the participants to put what they learned into practice. I had the impression that they understood the underlying concepts, but it was difficult for them to get a specific idea of how they could be applied. For the purpose of this project, I have created this material to accompany an explanation, or to be used as an introduction to CPS

A Reduction Method for Higher Order Variational Equations of Hamiltonian Systems

Let $\mathbf{k}$ be a differential field and let $[A]\,:\,Y'=A\,Y$ be a linear differential system where $A\in\mathrm{Mat}(n\,,\,\mathbf{k})$. We say that $A$ is in a reduced form if $A\in\mathfrak{g}(\bar{\mathbf{k}})$ where $\mathfrak{g}$ is the Lie algebra of $[A]$ and $\bar{\mathbf{k}}$ denotes the algebraic closure of $\mathbf{k}$. We owe the existence of such reduced forms to a result due to Kolchin and Kovacic \cite{Ko71a}. This paper is devoted to the study of reduced forms, of (higher order) variational equations along a particular solution of a complex analytical hamiltonian system $X$. Using a previous result \cite{ApWea}, we will assume that the first order variational equation has an abelian Lie algebra so that, at first order, there are no Galoisian obstructions to Liouville integrability. We give a strategy to (partially) reduce the variational equations at order $m+1$ if the variational equations at order $m$ are already in a reduced form and their Lie algebra is abelian. Our procedure stops when we meet obstructions to the meromorphic integrability of $X$. We make strong use both of the lower block triangular structure of the variational equations and of the notion of associated Lie algebra of a linear differential system (based on the works of Wei and Norman in \cite{WeNo63a}). Obstructions to integrability appear when at some step we obtain a non-trivial commutator between a diagonal element and a nilpotent (subdiagonal) element of the associated Lie algebra. We use our method coupled with a reasoning on polylogarithms to give a new and systematic proof of the non-integrability of the H\'enon-Heiles system. We conjecture that our method is not only a partial reduction procedure but a complete reduction algorithm. In the context of complex Hamiltonian systems, this would mean that our method would be an effective version of the Morales-Ramis-Sim\'o theorem.Comment: 15 page

A Reduced Form for Linear Differential Systems and its Application to Integrability of Hamiltonian Systems

Let $[A]: Y'=AY$ with $A\in \mathrm{M}_n (k)$ be a differential linear system. We say that a matrix $R\in {\cal M}_{n}(\bar{k})$ is a {\em reduced form} of $[A]$ if $R\in \mathfrak{g}(\bar{k})$ and there exists $P\in GL_n (\bar{k})$ such that $R=P^{-1}(AP-P')\in \mathfrak{g}(\bar{k})$. Such a form is often the sparsest possible attainable through gauge transformations without introducing new transcendants. In this article, we discuss how to compute reduced forms of some symplectic differential systems, arising as variational equations of hamiltonian systems. We use this to give an effective form of the Morales-Ramis theorem on (non)-integrability of Hamiltonian systems.Comment: 28 page

Tourism agglomeration and its impact on social welfare: an empirical approach to the Spanish case.

This paper measures two descriptors of tourism namely, its scale and agglomeration level and subsequently evaluates both descriptors according to their direct and joint impacts on the host communities' quality of life. The key constructs for this research are the following: (1) a tourism evaluation function that incorporates the scale and agglomeration of tourism, which is constructed for each one of the 50 Spanish provinces; and (2) a measure of the host communities' quality of life that comprises 12 objective partial indicators and an overall indicator that integrates them all. Results show the existence of carrying capacity frontiers or maximum thresholds that tourist destinations can sustain without damaging the economic, socio cultural, or environmental systems of the communities they belong.Communities; Sustainable tourism; Carrying capacity; Spain;

Hotel Location in Tourism Cities: Madrid 1936-1998.

To determine how the positioning of new hotels is affected by the distribution of similar incumbent competitors, this paper investigates geographic location, price, size, and services. With data on all 240 hotels operating in the city of Madrid between 1936 and 1998, a model of geographic and product location at the time of the hotels’ foundings is estimated based on the above mentioned variables. These are simultaneously determined and contingent upon the changing socioeconomic and urban circumstances of the city. The findings suggest that agglomeration occurs only among differentiated establishments. In the balance between agglomeration and differentiation strategies, particularly significant is the trade-off between price and geographic dimensions.Emplacement des hôtels dans les villes touristiques: Madrid 1936–1998. Pour déterminer comment le positionnement des nouveaux hôtels est affecté par la distribution des concurrents similaires et déjà établis, cet article examine situation géographique, prix, grandeur et services. Avec des données sur tous les 240 hôtels en opération à Madrid entre 1936 et 1998, on calcule un modèle de la situation géographique et des services au moment de la fondation des hôtels, en se basant sur les variables surmentionnées. Celles-ci dépendent au même temps des circonstances urbaines et socioéconomiques changeantes de la ville. Les résultats suggèrent que l’agglomération a lieu seulement parmi les établissements différenciés. Dans l’équilibre entre les stratégies d’agglomération et de différentiation, le compromis entre prix et situation est particulièrement significatif.Hotels; Location; Madrid; Hotels; Situation;

Occupational matching: the case of job seekers inscribed at Public Employment Offices

Using administrative records from Public Employment Offices, this paper studies the main factors determining occupational matching between labour supply and demand. This is measured by matching the demanded occupation by job seekers and the occupation they finally secure. The results show that occupational matching is greater among women, young workers and least-educated people. Higher rates of occupational matching are also found in medium-sized companies and among temporary workers. The results also show that certain occupations are strongly associated with a high degree of professional versatility, or instead that their corresponding tasks may be adequately performed by professionals from distinct background