A defence of Hart's semantics as nonambitious conceptual analysis

Two methodological claims in Hart's The Concept of Law have produced perplexity: that it is a book on “analytic jurisprudence” 1 and that it may also be regarded as an essay in “descriptive sociology.” 2 Are these two ideas reconcilable? We know that mere analysis of our legal concepts cannot tell us much about their properties, that is, about the empirical aspect of law. We have learned this from philosophical criticisms of conceptual analysis; yet Hart informs us that analytic jurisprudence can be reconciled with descriptive sociology. The answer to this puzzle lies in the notion of nonambitious conceptual analysis. The theorist analyzes concepts but accepts the limitations of conceptual analysis and therefore uses empirical knowledge and substantive arguments to explain, refine, or perhaps refute initial insights provided by intuitions. This is the conclusion that this paper arrives at as an argumentative strategy to defend Hart's legal theory from the criticisms of Stavropoulos and Dworkin. The latter argues that Hart's legal theory cannot explain theoretical disagreements in law because he relies on a shared criterial semantics. Stavropoulos aims to show that Hart's semantics is committed to ambitious conceptual analysis and relies on the usage of our words as a standard of correctness. Both attacks aim to show that the semantic sting stings Hart's legal theory. This essay refines both challenges and concludes that not even in the light of the most charitable interpretation of these criticisms is Hart's legal theory stung by the semantic sting. This study defends the view that Hart's methodological claims were modest and that he was aware of the limits of conceptual analysis as a philosophical method. He was, this study claims, far ahead of his time. 1 H.L.A Hart, THE CONCEPT OF LAW (1994). 2 Id

The effective participation of the audience in the production of news: encouraging opportunities through data journalism

Digital tools allow and encourage users "to participate in the creation and circulation of media” (Lewis, 2012). This participation can be considered as a remedy against the growing disconnection between journalism and citizens, also as a formula for a greater democratization of the media (Negroponte, 1996 y Castells, 2001). However, most studies show that rarely the participation of the audience become significant, papers indicate that it is actually quite unusual to allow citizens to be part of the productive process. (Domingo et al., 2008). The journalistic organization has not transferred the power to the recipients and the interaction with the audience is only welcome as comments about the information (Peters & Witschge, 2014). This work aims to demonstrate how the Data Journalism comes to enable this effective participation of the audience in the process of news production. Our main objective is to define the terms in which the participation of the audience takes place in Data Journalism, we aim to categorize how and to what extent this relationship occurs and what benefits it brings to the information. To achieve the objectives set for this work we have analyzed the Data Journalism works awarded in the Data Journalism Awards since its foundation in 2012. These awards are the most prestigious of the world and they have also been the reference for other international researches because selecting award-winning works involves studying a sample with quality (Hermida, 2017; Ojo & Heravi, 2017). After an in-depth analysis, sixteen pieces were detected, of more than a hundred, in which citizen participation was perceived.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. This research is part of the R + D project CS02015-64955-C4-3-

OPTIMAL PRICING AND GRANT POLICIES FOR MUSEUMS

Considering two potential sources of income (public grants and ticket revenues),we have defined a theoretical model where the public agency is the principal and the manager of the museum is the agent. This model allows us to design the optimal contract between both sides and thus to establish the optimal values of grants, ticket prices, budget and effort applied by the manager. Furthermore, we have found a theoretical reason to explain the inelastic pricing strategy that has been found in some of the empirical research on cultural and sports economics. The main conclusion is that the optimal contract allows a Pareto optimum solution in prices that does not change if we introduce moral hazard into this relationship. This solution allows us to conclude that the public agency should regulate ticket prices in accordance with the social valuation. However, public grants and museum budgets would be affected by the existence of this problem, moving the equilibrium away from the Pareto optimum situation. In this case, even with a risk averse manager and a risk neutral public agency, grants and budgets will depend on results because higher budgets related to good results provide the main incentives to increase the manager’s level of effort. Although the focus of this paper is on museum administration, the model that we have developed can be easily generalized and applied to other institutions, such as schools, sport facilities or NGOs, which are able to raise funds directly from private (e. g. ticket revenues or membership fees) or public sources (e.g. public grants).cultural economics, grants, public prices, museums, principal- agent model

How do your rivals' releasing dates affect your box office?

In this paper, we study to what extent a movie's box office receipts are affected by the temporal distribution of rival films. We propose a theoretical model that analyses the effects of past, present and future releases on a film's results. Using this model we can analyse how rivals' release dates impact on others' box office revenues. This theoretical model also allows us to carry out some comparative statics by changing some relevant parameters such as time depreciation, film quality or the timeline of exhibition. We have tested the empirical implications of this model using information on the films released in five countries: the USA, the United Kingdom, Germany, France and Spain. In order to maintain a degree of homogeneity, we have constructed an unbalanced panel consisting of films that were released in at least three of these countries. The geographical dimension of our data set allows us to use panel data techniques to control for unobserved heterogeneity among the films released. This allows us to control for one of the most relevant features of the movie market, namely the presence of highly differentiated products.temporal competition, movie exhibition, film industry, panel data, unobserved heterogeneity, differentiated product

Grammar-Based Geodesics in Semantic Networks

A geodesic is the shortest path between two vertices in a connected network. The geodesic is the kernel of various network metrics including radius, diameter, eccentricity, closeness, and betweenness. These metrics are the foundation of much network research and thus, have been studied extensively in the domain of single-relational networks (both in their directed and undirected forms). However, geodesics for single-relational networks do not translate directly to multi-relational, or semantic networks, where vertices are connected to one another by any number of edge labels. Here, a more sophisticated method for calculating a geodesic is necessary. This article presents a technique for calculating geodesics in semantic networks with a focus on semantic networks represented according to the Resource Description Framework (RDF). In this framework, a discrete "walker" utilizes an abstract path description called a grammar to determine which paths to include in its geodesic calculation. The grammar-based model forms a general framework for studying geodesic metrics in semantic networks.Comment: First draft written in 200

Wingtip vortex in a NACA0012 airfoil and its active control

Contribución mediante sesión pósterWe conduct experiments in a towing-tank to analyse the flow patterns of wingtip vortices in a NACA 0012 airfoil. In this experimental research, we provide PIV measurements and flow visualisations. Without active control, several parameters are given experimentally as function of the Reynolds number, so we compare these data with the theoretical models of Batchelor, and Moore and Saffman together with DNS. Secondly, we analyse the effect of a continuous injection in the spanwise direction. The continuous jet has a strong influence on the wing-tip vortex formation. We explore this effect at low chord based Reynolds number ranging from 7000 up to 20000. We change the aspect ratio of the injection, R, defined as the ratio of the velocities between the jet (Uj) and free-stream (U). For R=1, we find that the jet strongly affects the wingtip vortex formation with a sudden decrement of the axial vorticity and the azimuthal velocity. This technique is a challenge and a promising tool to reduce the intensity of the vortex core.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Chiral properties of hematite ({\alpha}-Fe2O3) inferred from resonant Bragg diffraction using circularly polarized x-rays

Chiral properties of the two phases - collinear motif (below Morin transition temperature, TM=250 K) and canted motif (above TM) - of magnetically ordered hematite ({\alpha}-Fe2O3) have been identified in single crystal resonant x-ray Bragg diffraction, using circular polarized incident x-rays tuned near the iron K-edge. Magneto-electric multipoles, including an anapole, fully characterize the high-temperature canted phase, whereas the low-temperature collinear phase supports both parity-odd and parity-even multipoles that are time-odd. Orbital angular momentum accompanies the collinear motif, while it is conspicuously absent with the canted motif. Intensities have been successfully confronted with analytic expressions derived from an atomic model fully compliant with chemical and magnetic structures. Values of Fe atomic multipoles previously derived from independent experimental data, are shown to be completely trustworthy

Effect of the axial jet on the optimal response in Batchelor vortex

En este póster se estudia la respuesta óptima del torbellino de Batchelor para distintos números de onda. Se demuestra que incluso teniendo la velocidad axial, un torbellino es capaz de tener grandes amplificaciones de energía.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Factores de consolidación y declive de la preocupación por el cambio climático en el discurso editorial de la prensa europea

A pesar de que desde hace ya más de cincuenta años que los organismos internacionales empezaran a advertir seriamente del riesgo que conllevaría el cambio climático para el planeta y de que en 1972 se celebrara la primera Conferencia de las Naciones Unidas sobre el Medio Ambiente Humano (CNUMAH), la preocupación por este problema medioambiental no ha calado en la opinión pública y el discurso mediático hasta hace poco más de una década. La cumbre de Kioto, en 1997, se considera un momento clave en el compromiso internacional contra el cambio climático pues la mayoría de los países acuerdan recortar sus emisiones de gases efecto invernadero y promover energías alternativas. A partir de entonces, tanto ese evento como posteriores citas interestatales y los paneles sobre el cambio climático promovidos por Naciones Unidas han ido alcanzado un eco mayor progresivamente mayor en la prensa de europea. Se trata, por tanto, de un nuevo contenido que se ha ido asentando, no sin reticencias, en la agenda de los medios. Este trabajo analiza el discurso editorial sobre el cambio climático de la prensa europea, en los diarios The Guardian, Le Monde, Frankfurter Allgemeine y El País, como medios de referencia en sus respectivos países, desde la hipótesis de que se trata de cuatro diarios cuya posición editorial es coincidente, en el sentido de que asumen el consenso científico en torno al cambio climático y apoyan el cumplimiento de los objetivos fijados en Kioto. Por tanto, se trata de definir los marcos interpretativos con los que se ha ido formando el discurso editorial sobre este contenido de reciente aparición en los medios con un doble objetivo: realizar un estudio de los enfoques o frames sobre los problemas medioambientales y los actores que intervienen y, en segundo lugar, trazar líneas de continuidad o ruptura entre los valores asociados al cambio climático entre estos países. Se realiza un estudio cronológico para determinar si la presencia de esta temática ha crecido desde 1997 y, en caso contrario, se analizan las causas del su silenciamiento. Se ha utilizado una metodología que combina técnicas cuantitativas y cualitativas de análisis del discurso y se ha seleccionado un periodo de análisis de catorce años, los comprendidos entre las cumbres del clima celebradas en Kioto y Durban (2011). Se trata de una investigación pertinente dado que la mayoría de las realizadas sobre medios y cambio climático (Boykoff y Boykoff 2004, Russell 2008, Nisbet y Mooney 2007; Neverla 2008, Boykoff y Roberts 2007) se han centrado en aspectos relacionados con el tratamiento informativo y técnicas constructivas, adecuación del mensaje científico, etc., pero se ha ignorado el discurso editorial. Esta investigación se ha enmarcado en el proyecto del Plan Nacional del Ministerio de Educación español, titulado: “Comunicación y cambio climático. Estrategias de traslación mediática del consenso científico a la opinión pública” (referencia: CSO2010-19725).Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec