Inclusion of soil erosion impacts in life cycle assessment on a global scale: application to energy crops in Spain

Purpose: Despite the fundamental role of ecosystem goods and services in sustaining human activities, there is no harmonized and internationally agreed method for including them in life cycle assessment (LCA). The main goal of this study was to develop a globally applicable and spatially resolved method for assessing land-use impacts on the erosion regulation ecosystem service.Methods: Soil erosion depends much on location. Thus, unlike conventional LCA, the endpoint method was regionalized at the grid-cell level (5 arc-minutes, approximately 10×10 km2) to reflect the spatial conditions of the site. Spatially explicit characterization factors were not further aggregated at broader spatial scales. Results and discussion: Life cycle inventory data of topsoil and topsoil organic carbon (SOC) losses were interpreted at the endpoint level in terms of the ultimate damage to soil resources and ecosystem quality. Human health damages were excluded from the assessment. The method was tested on a case study of five three-year agricultural rotations, two of them with energy crops, grown in several locations in Spain. A large variation in soil and SOC losses was recorded in the inventory step, depending on climatic and edaphic conditions. The importance of using a spatially explicit model and characterization factors is shown in the case study.Conclusions and outlook: The regionalized assessment takes into account the differences in soil erosion-related environmental impacts caused by the great variability of soils. Taking this regionalized framework as the starting point, further research should focus on testing the applicability of the method trough the complete life cycle of a product and on determining an appropriate spatial scale at which to aggregate characterization factors, in order to deal with data gaps on location of processes, especially in the background system. Additional research should also focus on improving reliability of the method by quantifying and, insofar as it is possible, reducing uncertainty.

Technology Outlook: Iberoamerican Tertiary Education 2012-2017

La sèrie d'informes Horizon és el resultat més tangible del Projecte Horizon del New Media Consortium, un esforç de recerca qualitativa iniciat el 2002, que identifica i descriu les tecnologies emergents amb més potencial d'impacte en l'ensenyament, l'aprenentatge, la recerca i la expressió creativa en l'àmbit educatiu global. Aquest volum, Technology Outlook: Iberoamerican Tertiary Education 2012-2017, és la segona edició del Projecte Horizon Iberoamèrica i se centra en la investigació en els països de la regió Iberoamericana (incloent-hi tota Llatinoamèrica, Espanya i Portugal) i en l'àmbit de l'educació superior. Ha estat produït pel NMC i l'eLearn Center de la Universitat Oberta de Catalunya.

The Phenomenon of international new ventures, global start-ups, and born-globals: what do we know after a decade (1993-2002) of exhaustive scientific inquiry?

In this paper, 27 studies from the last decade which deal more or less explicitly with the International New Venture, global start-up or born-global phenomenon are first identified, and then fully examined and critically assessed as a basis for obtaining an adequate view of the state-of-the-art of this increasingly important research avenue in the field of International Entrepreneurship (IE). The methodology used for this synthetic review allow us to analyze a number of recent, purposefully-chosen studies that are systematically compared along the following criteria: 1) main objective and type of research; 2) theoretical framework/s of reference, 3) methodological issues, and 4) main findings and/or conclusions. As a result of this literature review, a critical assessment follows in which the most relevant benefits and contributions as well as potential drawbacks, limitations or major discrepancies in the research activities conducted so far are discussed. Finally, some suggestions and implications are provided in the form of future research directions.

Global eriodicity and complete integrability of discrete dynamical systems

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

On the number of limit cycles bifurcating from a non-global degenerated center

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

Human capital in a global and knowledge-based economy. Part 2. Asssessment at the EU country level.

This report is an extension and partial update of de la Fuente and Ciccone (2002). It constructs estimates of the private and social rates of return on schooling for fourteen EU countries using microeconometric estimates of Mincerian wage equations, the results of cross-country growth regressions and OECD data on educational expenditures, tax rates and social benefits. The results are used to draw some tentative conclusions regarding the optimality of observed investment patterns and educational subsidy levels.

Human capital in a global and knowledge-based economy

This document is a report prepared for the DG for Employment and Social Affairs of the European Commission. It surveys the available evidence on the contribution of investment in human capital to aggregate productivity growth and on its impact on wages and other labour outcomes at the individual level. It also draws some tentative policy conclusions for an average European country.

Normal forms for rational difference equations with applications to the global periodicity problem

We propose a classification and derive the associated normal forms for rational difference equations with complex coefficients. As an application, we study the global periodicity problem for second order rational difference equations with complex coefficients. We find new necessary conditions as well as some new examples of globally periodic equations.

Factores de marketing que determinan el rendimiento internacional de las empresas exportadoras españolas: enfoque sobre las empresas born-global

El estudio de las nuevas empresas se ha convertido en una parte importante de la literatura sobre la creación de empresas internacionales y dentro de este campo las empresas que empiezan la actividad internacional a poco tiempo después de su creación, nombradas empresas born-global, en adelante BG*, empiezan a despertar el interés de los investigadores. En España, hasta la fecha el número de estudios, que han investigado las empresas BG, es limitado. El objetivo de la investigación es contribuir a explicar los factores claves, principalmente de marketing, que influyen sobre el rendimiento internacional de las empresas BG españolas y las empresas exportadoras tradicionales. En base a una revisión de la literatura específica, se desarrolla un modelo para explicar los factores determinantes del rendimiento internacional de este tipo de empresas, que es comprobado en una muestra de 29 empresas BG y 26 empresas exportadoras tradicionales. Los resultados demuestran que el modelo es significativo, los factores propuestos influyen sobre el rendimiento internacional de estas empresas. Sin embargo, sólo uno de los factores propuestos, la calidad del producto, es el factor clave que más determina el rendimiento internacional de las empresas BG, y para las empresas exportadoras tradicionales es otro factor distinto, la diferenciación del producto, lo que más determina el rendimiento internacional. Conclusiones y limitaciones del estudio son presentadas junto con indicaciones para futuras investigaciones.

The ‘Global Dimension’ of Contemporary Politics. An Argument for Taking ‘Global’ Seriously

Recent years have seen a striking proliferation of the term ‘global’ in public and political discourse. The popularity of the term is a manifestation of the fact that there is a widespread notion that contemporary social reality is ‘global’. The acknowledgment of this notion has important political implications and raises questions about the role played by the idea of the ‘global’ in policy making. These questions, in turn, expose even more fundamental issues about whether the term ‘global’ indicates a difference in kind, even an ontological shift, and, if so, how to approach it. This paper argues that the notion of ‘global’, in other words the ‘global dimension’, is a significant aspect of contemporary politics that needs to be investigated. The paper argues that in the globalization discourse of International Studies ‘global’ is ‘naturalized’, which means that it is taken for granted and assumed to be self-evident. The term ‘global’ is used mainly in a descriptive way and subsumed under the rubric of ‘globalization’. ‘Global’ tends to be equated with transnational and/or world-wide; hence, it addresses quantitative differences in degree but not (alleged) differences in kind. In order to advance our understanding of contemporary politics, ‘global’ needs to be taken seriously. This means, firstly, to understand and to conceptualize ‘global’ as a social category; and, secondly, to uncover ‘global’ as a ‘naturalized’ concept in the Political and International Studies strand of the globalization discourse in order to rescue it for innovative new approaches in the investigation of contemporary politics. In order to do so, the paper suggests adopting a strong linguistic approach starting with the analysis of the word ‘global’. Based on insights from post-structuralism as well as cognitive and general constructivist perspectives it argues that a frame-based corpus linguistic analysis offers the possibility of investigating the collective/social meaning(s) of global in order to operationalize them for the analysis of the ‘global dimension’ of contemporary politics.

Declaració sobre la crisi econòmica global i el seu impacte en les compres consorciades (19 de gener de 2009)

Redactada en nom dels molts consorcis de biblioteques de tot el món que participen a l'ICOLC, aquesta declaració té dos propòsits. Té la intenció d'ajudar als editors i altres proveïdors de contingut amb els quals tenim accés als recursos d'informació electrònica (d'ara en endavant simplement anomenats editors) a entendre millor com l'actual crisi econòmica única afecta a la comunitat de la informació de tot el món. El segon propòsit és suggerir un ventall de propostes que creiem són de benefici comú per a les biblioteques i els proveïdors de serveis d'informació.

Declaración sobre la crisis económica global y su impacto en las compras consorciadas (19 de enero de 2009)

Redactada en nombre de los muchos consorcios de bibliotecas de todo el mundo que participan en ICOLC, esta declaración tiene dos propósitos. Tiene la intención de ayudar a los editores y otros proveedores de contenido con los cuales tenemos acceso a los recursos de información electrónica (de ahora en adelante simplemente llamados editores) a entender mejor cómo la actual crisis económica única afecta a la comunidad de la información de todo el mundo. El segundo propósito es sugerir un abanico de propuestas que creemos son de beneficio común para las bibliotecas y los proveedores de servicios de información.

Response of photosynthetic organisms to global change: an approach based on marker pigments

Report for the scientific sojourn carried out at the Department of Freshwater Ecology, National Environmetal Research Institute, Denmark, from 2006 to 2008. The main objective of the project was to reconstruct photosynthetic organism community composition using pigmentbased methods and to study their response to natural (e.g. climate) or anthropogenic (e.g. eutrophication) perturbations that took place in the system over time. We performed a study in different locations and at different temporal scales. We analysed the pigment composition in a short sediment record (46 cm sediment depth) of a volcanic lake (Lake Furnas) in the Azores Archipelago (Portugal). The lake has been affected during the last century by successive fish introductions. The specific objective was to reconstruct the lake’s trophic state history and to assess the role of land-use, climate and fish introductions in structuring the lake community. Results obtained suggested that whereas trophic cascade and changes in nutrient concentrations have some clear effects on algal and microbial assemblages, interpreting the effects of changes in climate are not straightforward. This is probably related with the rather constant precipitation in the Azores Islands during the studied period. We also analysed the pigment composition in a long sediment record (1800 cm sediment depth) of Lake Aborre (Denmark) covering ca. 8kyr of lake history. The specific objective was to describe changes in lake primary production and lake trophic state over the Holocene and to determine the photosynthetic organisms involved. Results suggested that external forcing (i.e. land use changes) was responsible of erosion and nutrient run off to the lake that contributed to the reported changes in lake primary production along most of the Holocene.

Anàlisi global de la petjada ecològica i la forma urbana

Cada cop són més els estudiosos que consideren aquest nou segle com el segle de les ciutats. L’any 2008 més de la meitat de la població mundial viurà en ambients urbans, i això es veu amb temor pel gran impacte que tenen les ciutats sobre el medi, i per la qualitat de vida dins aquestes urbs. Aquest document estudia com els factors urbans determinen la Petjada Ecològica global de les activitats humanes, utilitzant variables com : densitat mitjana de les ciutats, percentatge de població urbana, renda per càpita, latitud, preus de la gasolina i mida de la població.