5,418 research outputs found

    Social Networks across Spatial Agglomerations: the Paradox of High-Tech Clusters. A Critical Revision of Clusters

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    This paper analyzes a fundamental gap research in high-tech clusters surveying literature in a critical perspective: the paper evidenced the taken-for-granted assumption that knowledge spillovers (KS) are unique assets conveying flows of knowledge in clusters, arguing the importance of traded interactions based on market transaction conditions which occur in clusters, even beyond spatial social networks. In the case of high-tech clusters: which is the type of interactions occurring in clusters when there is a manifested lack of local social networks? Results suggest that under analytical (versus synthetic) knowledge base in clusters, the formal and traded commercial partnerships are also interactions (assets) available in clusters, beyond the traditionally claimed un-traded KS and not being restricted to spatial conditions but to global circuits of knowledge which complement the lack of local resources in high-tech clusters. High-tech clusters surveyed do not show the high levels of inter-firm collaboration that cluster theory predicts

    Space-division multiplexing for fiber-wireless communications

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    We envision the application of optical Space-division Multiplexing (SDM) to the next generation fiber-wireless communications as a firm candidate to increase the end user capacity and provide adaptive radiofrequency-photonic interfaces. This approach relies on the concept of fiber-distributed signal processing, where the SDM fiber provides not only radio access distribution but also broadband microwave photonics signal processing. In particular, we present two different SDM fiber technologies: dispersion-engineered heterogeneous multicore fiber links and multicavity devices built upon the selective inscription of gratings in homogeneous multicore fibers.Comment: 4 pages, 20th International Conference on Transparent Optical Networks (ICTON), Girona (Spain), 2017. arXiv admin note: text overlap with arXiv:1810.1213

    El diseño de una comunidad sustentable en la Isla Floreana diseño social, económico y del medio ambiente

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    Based on the concept that architecture is a social discipline, and following the ideas raised by "SEED" (for its acronym in English: Social, Economical and Environmental Design), architectural movement that was born in 2005 by questioning the traditional approaches to the architectural problems for the development of this project a development strategy poses for a sustainable community on Floreana Island. Because of its unique location in the Galapagos Archipelago, the system used must consider the social, economic and environmental implications that will ensure conservation of the vulnerable ecosystem and the welfare of its population. The implemented methodology seeks to understand the needs and habits of its people, not wanting to impose "continental" concepts that do not work in such a fragile place with a young population that consists of different ethnic groups without a local identity. This lack of identity is one of the social and architectural problems in developing Floreana. Thus the proposed result takes into account the individuality and diversity of the population and the needs and opportunities within the highly regulated environment and are looking to create rhythm or identity in the development of the village.Partiendo del concepto de que la arquitectura es una disciplina social, y siguiendo las ideas planteados por el “SEED”, (por sus siglas en inglés: Social, Economical and Environmental Design), movimiento arquitectónico que nació en el 2005, del cuestionamiento de las aproximaciones tradicionales al problema arquitectónico, para el desarrollo de este proyecto se plantea una estrategia de desarrollo para una comunidad sustentable en la Isla Floreana. Por su ubicación única en el archipiélago de Galápagos, el sistema utilizado debe considerar las implicaciones sociales, económicas y medioambientales que aseguren una conservación del ecosistema vulnerable de Galápagos y el bienestar de su población. La metodología implementada busca entender las necesidades y hábitos de su población, sin pretender imponer conceptos “continentales” que no funcionan en un lugar tan frágil y con una población joven conformada de diferentes etnias y sin una identidad local. Esta falta de identidad se trata como una de las problemáticas sociales y arquitectónicas en el desarrollo de Floreana. Por consiguiente el resultado planteado toma en cuenta las individualidades y diversidades de la población así como las necesidades y posibilidades dentro del entorno altamente regulado y limitado y busca marcar una ritmo o identidad en el desarrollo del poblado

    First IRIMA Workshop Industrial Research and Innovation Monitoring and Analysis: Identifying policy-makers and business community needs - Summary Report

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    In order to identify how the IRIMA activities can best serve the information needs of policy makers and industrialists, a workshop was organised on 4th December 2012. The workshop was structured around two main topics: - Session 1: High-growth innovative companies in Europe: What do we know about them? How to increase their number? - Session 2: Globalisation and R&D localisation: How to attract R&D investments in Europe? What is the link between R&D and manufacturing activities? The participants were requested to provide feed-back on the pertinence and policy relevance of the research questions identified for the next stage of the IRIMA project and to signal any missing areas where further empirical evidence would be needed.JRC.J.2-Knowledge for Growt

    Second IRIMA workshop Industrial Research and Innovation Monitoring and Analysis: Counting (and accounting) R&D and non-R&D intangibles, drivers of firm’s innovation and growth – Summary Report

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    In this second IRIMA Workshop the aim was to discuss the policy implications of new evidence obtained by the project on the role that R&D and non-R&D intangible assets (e.g. training, design, branding and reputation) have for companies’ innovation and growth in Europe. In particular, it focused on what accounting data at company level can actually reveal on the role of intangibles assets - both at the micro and at the macro level - and on what they miss-reveal or simply are not able to disclose. The informative and policy role of other kinds of (non-accounting) statistical sources - like dedicated surveys on firms’ intangible investments – was also central to the workshop. The workshop, titled "Counting (and accounting) R&D and non-R&D intangibles, drivers of firm's innovation and growth", was organised in two sessions: the first one was dedicated to the discussion of recent evidence on companies' R&D investments and the second one to the analysis of companies' investments on the broader set of intangibles assets which drive firm's innovative activities.JRC.J.2-Knowledge for Growt

    Autophagy-related proteins: in vitro studies of protein-lipid interactions modulating autophagosome elongation

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    225 p.La autofagia es un proceso catabólico implicado en el desarrollo de un amplio espectro de enfermedades humanas. Se caracteriza por la formación de una estructura de doble membrana denominada autofagosoma, la cual incorpora en su interior el material celular susceptible de ser degradado posteriormente por los lisosomas. Sin embargo, la manera en la que el autofagosoma crece y finalmente se cierra es todavía una pregunta sin resolver, y continúa siendo objeto de profundo estudio. Los resultados de esta tesis sirven para aclarar el papel de tres homólogos humanos diferentes de Atg8 en eventos de fusión que tienen lugar durante la elongación del autofagosoma. Las formas de LC3, GATE-16 y GABARAP conjugadas enzimáticamente a PE inducen fusión de liposomas y este proceso puede estar modulado por la geometría lipídica y por la curvatura de membrana, características que podrían estar presentes en el borde del fagóforo naciente y que se ajustan debidamente al modelo propuesto de fusión tipo tallo. Además Atg3, uno de los componentes de la reacción enzimática que induce las formas conjugadas a PE, interacciona específicamente con membranas aniónicas, parece modular la eficiencia de la lipidación y muestra actividad de agregación de vesículas, lo cual puede estar relacionado con los eventos de fusión catalizados por los arriba mencionados homólogos de Atg8 durante el crecimiento del autofagosoma. Finalmente, resultados preliminares pueden sugerir una posible implicación de la proteína transmembrana Atg9 en el transporte de lípidos que parece ocurrir durante la elongación del fagóforo.CSI

    Social Networks across Spatial Agglomerations: the Paradox of High-Tech Clusters. A Critical Revision of Clusters

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    This paper analyzes a fundamental gap research in high-tech clusters surveying literature in a critical perspective: the paper evidenced the taken-for-granted assumption that knowledge spillovers (KS) are unique assets conveying flows of knowledge in clusters, arguing the importance of traded interactions based on market transaction conditions which occur in clusters, even beyond spatial social networks. In the case of high-tech clusters: which is the type of interactions occurring in clusters when there is a manifested lack of local social networks? Results suggest that under analytical (versus synthetic) knowledge base in clusters, the formal and traded commercial partnerships are also interactions (assets) available in clusters, beyond the traditionally claimed un-traded KS and not being restricted to spatial conditions but to global circuits of knowledge which complement the lack of local resources in high-tech clusters. High-tech clusters surveyed do not show the high levels of inter-firm collaboration that cluster theory predict

    3D variability in ball toss and impact location for tennis serves in collegiate female players

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    Recent research has been focusing in the tennis serve to get deeper knowledge about its phases and the factors involved for better performance. This study analyses one aspect of the tennis serve that it was not being considered before, and not too much information was available to the public: The tennis ball toss. A player who can develop consistency and a high efficiency of serve percentage during a tennis match will increase their chances of success. The objective of the tennis serve is to place the ball in the opposite court within the opposite serve quadrant to where the opponent is located. The player who is able to produce a considerable amount of speed and spin using consistent ball contact has a greater chance to dominate the game from the start to win the point. Previous research has been concentrated in the comparison of first and second serve but, there is no correlation of the tennis ball toss and its variability with impact location of the tennis serve so, understanding the implications of the toss and its relationship with the tennis serve was very motivating. This study consists of a 3D analysis of the tennis ball toss and its implications with impact location and impact variability of the tennis serve. Several players were analyzed performing first serves in a tennis tournament and a 3D analysis of the tennis ball toss was made using different techniques to see how the toss will act in different dimensions. The findings in this study are important for the development of athletes and also, to break down old beliefs about the right employment of tennis serves techniques and its relationship with a better execution of the technique itself. This research finds facts about the behavior of the tennis ball during the tennis ball toss in a live tennis match. Although, no significant differences were found among dimensions in the tennis ball toss related with impact variability, there is a difference in the impact location in one of the dimensions analyzed in this study
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