3,796 research outputs found

    Probability density for a hyperbolic SPDE with time dependent coefficients

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    We prove the existence and smoothness of density for the solution of a hyperbolic SPDE with free term coefficients depending on time, under hypoelliptic non degeneracy conditions. The result extends those proved in Cattiaux and Mesnager, PTRF 2002, to an infinite dimensional setting.Comment: 15 page

    Competitive intelligence systems as a basis for the effective R&D management in the plastics industry in Andalusia

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    The main purpose of present work is to inquire the range of implementation an effective use of Competitive Intelligence Systems in the andalusian plastics industry linked to the agrifood industry of the region. This research seeks the model generalization of how CI Systems asses the generation of the competitive advantage and how they become an essential tool of new products creation, as well as the insfruments of the productive processes planning and management in the industrial organization. Through the case study of 5 big andalusian plastics companies and currently in phase of extending the analysis to whole branch with the DELPHI method, the research intends to contribute to comprehend how the internal systems of Technology Watch and Competitive Intelligence impact directly (measured short-term and long- term) on degree of competitiveness and innovating potential of the industrial companies. These systems can become tools of internal knowledge generation and means of feedback to R&D management systems, being able to provide answers to new emergent consumption trends, new product demands and any advances in technologies of materials or manufacturing.Comunicación presentada dentro del Congreso “III International Forum on Management”. Celebrado en la Universidad de Évora de Portugal, los días 1 y 2 de febrero de 2019. Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    Modelling for Pest Risk Analysis: Spread and Economic Impacts

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    The introduction of invasive pests beyond their natural range is one of the main causes of the loss of biodiversity and leads to severe costs. Bioeconomic models that integrate biological invasion spread theory, economic impacts and invasion management would be of great help to increase the transparency of pest risk analysis (PRA) and provide for more effective and efficient management of invasive pests. In this thesis, bioeconomic models of management of invasive pests are developed. The models are applied to three cases of study. The main case looks at the invasion in Europe by the western corn rootworm (WCR), Diabrotica virgifera ssp. virgifera LeConte (Coleoptera: Chrysomelidae). A range of quantitative modelling approaches was employed: (i) dispersal kernels fitted to mark-release-recapture experimental data; (ii) optimal control models combined with info-gap theory; (iii) spatially explicit stochastic simulation models; and (iv) agent-based models. As a result of the application of the models new insights on the management of invasive pests and the links between spread and economic impacts were gained: (i) current official management measures to eradicate WCR were found to be ineffective; (ii) eradication and containment programmes that are economically optimal under no uncertainty were found out to be also the most robustly immune policy to unacceptable outcomes under severe uncertainty; (iii) PRA focusing on single invasive pests might lead to management alternatives that dot not correspond to the optimal economic allocation if the rest of the invasive pests sharing the same management budget are considered; (iv) the control of satellite colonies of an invasion occurring by stratified dispersal is ineffective when a strong propagule pressure is generated from the main body of the invasion and this effect is increased by the presence of human-assisted long-distance dispersal; and (v) agent-based models were shown to be an adequate tool to integrate biological invasion spread models with economic analysis models

    Empleo y protección social ante situaciones de exclusión : reflexiones generales y análisis de los programas PREPARA y PAE

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    Versión revisada de la ponencia presentada el 31 de octubre de 2014 en la Jornada organizada por la Asociación Española de Derecho del Trabajo y de la Seguridad Social sobre "Promoción del empleo y protección social de las personas en situación de exclusión". La mesa de trabajo en la que presenté esta ponencia fue compartida con las profesoras Carmen Viqueira Pérez y Belén Garcia Romero

    Felipe V y el reformismo centralista: El origen del sistema ministerial español

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