884 resultados para Contribution


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Resumen tomado de la publicación. Monográfico con el título: El proceso de Bolonia : dinámicas y desafíos de la enseñanza superior en Europa a comienzos de una nueva época

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Realidad del consumo de drogas y la delincuencia en los jóvenes. Relación entre uno y otro hecho. Funcionamiento hacia los mismos de las instancias de control. Imágenes que sobre los hechos tienen los adultos. Jóvenes: 2.246 jóvenes de 15-21 años de Navarra. Adultos: 300 educadores, policías municipales, padres de familia. Muestra de jóvenes: estratificación de sexo y edad, y azar. Adultos: no representativa. Elaboración de cuestionario para jóvenes, con preguntas sobre contacto y frecuencia de consumo de diferentes drogas, frecuencia en la comisión de diferentes tipos de delitos, veces en que ha sido objeto de las actuaciones de las diferentes instancias de control y variables sobre la familia, la educación, el trabajo, la religión, la sexualidad, la política y el ocio y tiempo libre. Cuestionario dirigido a los adultos en el cual debían de estimar en porcentajes las respuestas dadas por los jóvenes a su cuestionario. Informatización de los cuestionarios. Análisis de bivariables con test de x2 en la encuesta de jóvenes. Obtención de medias, desviaciones típicas y comparación con los resultados de la encuesta de jóvenes, en la encuesta realizada entre los adultos. Descripción de los datos obtenidos, creación de variables síntesis, cruce entre variables y medida de la asociación mediante test de x2 para encontrar la extensión de la droga y la delincuencia en los jóvenes, la relación y asociación entre uno y otro hecho, y la orientación de las instancias de control. Comparación de resultados de la encuesta de jóvenes con las imagenes de los adultos. El consumo de drogas es generalizado entre los jóvenes, siendo menos general el de drogas ilegales. El consumo de una droga ilegal no conduce inevitablemente al consumo habitual de dichas drogas ilegales. La comisión de delitos por parte de los jóvenes es un hecho prácticamente normal. Sin embargo, la delincuencia de los jóvenes es cuantitativamente diferente de la reflejada por las instancias de control y cualitativamente diferente de la gran delincuencia. Droga y delincuencia están asociadas significativamente, pero no se identifican en los jóvenes. El control se centra sobre los jóvenes y la droga. La realidad descubierta sitúa en un punto más preciso los problemas de la droga y la delincuencia en los jóvenes y evidencia las falsas representaciones existentes sobre su asociación. Detecta la focalización de las instancias de control sobre los jóvenes y la droga y desvela la empresa ideológica que ello comporta. Precisa la deformación por exageración o defecto de las representaciones de los adultos sobre los jóvenes.

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Monográfico con el título: 'Mejorar la escuela: perspectivas didácticas y organizativas'. Resumen basado en el de la publicación

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Resumen basado en el de la publicación. Resumen en inglés

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Monogr??fico con el t??tulo: " Formaci??n de profesores. Perspectivas de Brasil, Colombia, Espa??a y Portugal"

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A simple extended finite field nuclear relaxation procedure for calculating vibrational contributions to degenerate four-wave mixing (also known as the intensity-dependent refractive index) is presented. As a by-product one also obtains the static vibrationally averaged linear polarizability, as well as the first and second hyperpolarizability. The methodology is validated by illustrative calculations on the water molecule. Further possible extensions are suggested

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Electrical property derivative expressions are presented for the nuclear relaxation contribution to static and dynamic (infinite frequency approximation) nonlinear optical properties. For CF4 and SF6, as opposed to HF and CH4, a term that is quadratic in the vibrational anharmonicity (and not previously evaluated for any molecule) makes an important contribution to the static second vibrational hyperpolarizability of CF4 and SF6. A comparison between calculated and experimental values for the difference between the (anisotropic) Kerr effect and electric field induced second-harmonic generation shows that, at the Hartree-Fock level, the nuclear relaxation/infinite frequency approximation gives the correct trend (in the series CH4, CF4, SF6) but is of the order of 50% too small

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Per tal d’avaluar l’impacte de la contaminació en els ecosistemes aquàtics, aquesta tesi es centra en una aproximació multi-biomarcador en els biofilms. En complement dels biomarcadors clàssics, es va demostrar que les activitats dels enzims antioxidants (AEA): catalasa, ascorbat peroxidasa i glutatió reductasa eren biomarcardors d'estrès oxidatiu en els biofilms. Tot i que les AEA poden veure's influenciades amb la mateixa mesura per factors naturals (edat del biofilm, llum de colonització o d'exposició) i contaminants (herbicides i farmacèutics), aquestes AEA permeten entendre millor l'efecte dels contaminants. Cal remarcar que assajos de toxicitat aguda es poden utilitzar per comparar la capacitat antioxidant entre comunitats i conèixer la seva pre-exposició a l'estrès oxidatiu. Aquesta aproximació multi-biomarcador a nivell de comunitat és especialment interessant per avaluar la toxicitat dels contaminants emergents (β-blockers) sobre espècies no-diana. Per tal de millorar-la, també es va verificar la possibilitat de mesurar l'expressió gènica en biofilms.

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L’écomusée aura vécu ses heures de gloire, partagé entre le scepticisme et l’adhésion inconditionnelle. Point de rencontre et synthèse des musées de pays, de la vague participative issue des mouvements de socialisation dans le monde, de l’éveil d’un sentiment de nostalgie et de précarité face aux patrimoines et aux identités mises à mal pendant le second conflit mondial, le questionnement et le rejet de valeurs jusque là considérées comme les refuges sûrs de la stabilité, par la continuité, des sociétés, l’avènement de l’écomusée représente à la fois un phénomène de prise de conscience de la globalité des rapports humains entretenue avec leurs environnements respectifs, aussi de rupture en introduisant, dans les meilleurs cas, la dimension critique de questionnement et de refus s’adressant aux systèmes et aux mentalités paralysantes qu’ils entretiennent pour en assurer le maintiens.

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This Policy Contribution assesses the broad obstacles hampering ICT-led growth in Europe and identifies the main areas in which policy could unlock the greatest value. We review estimates of the value that could be generated through take-up of various technologies and carry out a broad matching with policy areas. According to the literature survey and the collected estimates, the areas in which the right policies could unlock the greatest ICT-led growth are product and labour market regulations and the European Single Market. These areas should be reformed to make European markets more flexible and competitive. This would promote wider adoption of modern data-driven organisational and management practices thereby helping to close the productivity gap between the United States and the European Union. Gains could also be made in the areas of privacy, data security, intellectual property and liability pertaining to the digital economy, especially cloud computing, and next generation network infrastructure investment. Standardisation and spectrum allocation issues are found to be important, though to a lesser degree. Strong complementarities between the analysed technologies suggest, however, that policymakers need to deal with all of the identified obstacles in order to fully realise the potential of ICT to spur long-term growth beyond the partial gains that we report.

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Sectoral shifts, such as shrinkage of low labour productivity and the low-wage construction sector, can lead to apparent increased aggregate average labour productivity and average wages, especially when capital intensity differs across sectors. For 11 main sectors and 13 manufacturing sub-sectors, we quantify the compositional effects on productivity, wages and unit labour costs (ULCs) based and real effective exchange rates (REER), for 24 EU countries. Compositional effects are greatest in Ireland, where the pharmaceutical sector drives the growth of output and productivity, but other sectors have suffered greatly and have not yet recovered. Our new ULC-REER measurements, which are free from compositional effects, correlate well with export performance. Among the countries facing the most severe external adjustment challenges, Lithuania, Portugal and Ireland have been the most successful based on five indicators, and Latvia, Estonia and Greece the least successful. There is evidence of downward wage flexibility in some countries, but wage cuts have corrected just a small fraction of pre-crisis wage rises and came with massive reductions in employment even in the business sector excluding construction and real estate, highlighting the difficulty of adjusting wages downward.

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This paper discusses the creation of a European Banking Union. First, we discuss questions of design. We highlight seven fundamental choices that decision makers will need to make: Which EU countries should participate in the banking union? To which categories of banks should it apply? Which institution should be tasked with supervision? Which one should deal with resolution? How centralised should the deposit insurance system be? What kind of fiscal backing would be required? What governance framework and political institutions would be needed? In terms of geographical scope, we see the coverage of the banking union of the euro area as necessary and of additional countries as desirable, even though this would entail important additional economic difficulties. The system should ideally cover all banks within the countries included, in order to prevent major competitive and distributional distortions. Supervisory authority should be granted either to both the ECB and a new agency, or to a new agency alone. National supervisors, acting under the authority of the European supervisor, would be tasked with the supervision of smaller banks in accordance with the subsidiarity principle. A European resolution authority should be established, with the possibility of drawing on ESM resources. A fully centralized deposit insurance system would eventually be desirable, but a system of partial reinsurance may also be envisaged at least in a first phase. A banking union would require at least implicit European fiscal backing, with significant political authority and legitimacy. Thus, banking union cannot be considered entirely separately from fiscal union and political union. The most difficult challenge of creating a European banking union lies with the short-term steps towards its eventual implementation. Many banks in the euro area, and especially in the crisis countries, are currently under stress and the move towards banking union almost certainly has significant distributional implications. Yet it is precisely because banks are under such stress that early and concrete action is needed. An overarching principle for such action is to minimize the cost to the tax payers. The first step should be to create a European supervisor that will anchor the development of the future banking union. In parallel, a capability to quickly assess the true capital position of the system’s most important banks should be created, for which we suggest establishing a temporary European Banking Sector Task Force working together with the European supervisor and other authorities. Ideally, problems identified by this process should be resolved by national authorities; in case fiscal capacities would prove insufficient, the European level would take over in the country concerned with some national financial participation, or in an even less likely adverse scenario, in all participating countries at once. This approach would require the passing of emergency legislation in the concerned countries that would give the Task Force the required access to information and, if necessary, further intervention rights. Thus, the principle of fiscal responsibility of respective member states for legacy costs would be preserved to the maximum extent possible, and at the same time, market participants and the public would be reassured that adequate tools are in place to address any eventuality.