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Globalization did not create convergence to a unique economic model among countries. Even in developed countries, the answers to the pressures of markets underline the existence of a variety of capitalisms. The analysis of innovation systems, in particular at the national level, is adequate as a preliminary approach to understand the diversity of profiles and institutional architectures. The article benefits from the broader notion of national innovation system to understand the profiles of 15 European countries. By analysing central building blocks and institutional complementarities through the creation of indexes based on 64 variables and a cluster analysis, it was possible to understand the different levels of institutional efficiency in the analysed dimensions for the selected groups of countries.  相似文献   
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Business angels (BAs) are recognized as playing a significant role in stimulating entrepreneurial activity. With the decline in both bank lending and venture capital investment since the onset of the global economic crisis, government efforts to stimulate BA activity have become a more significant component in strategies to increase the level of entrepreneurial activity. This paper examines the responsiveness of angels to such initiatives in so-called austerity economies – countries that were hardest hit by the financial crisis of 2008 and subsequent global recession and, as a consequence, had to take extreme economic and fiscal measures to reduce their budget deficits. We examine this question in Portugal which experienced one of the deepest recessions in the European Union following the implementation of severe austerity measures. This study confirms that government intervention to support angel investing can have a positive impact. However, the different types of intervention have varied in take-up rates. Other countries can learn from the Portuguese experience in three ways: the types of interventions that have the highest and lowest levels of take-up, the link between the design and the take-up of incentives, and types of intervention that should be considered but have not been implemented in Portugal.  相似文献   
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Although the issue of the out-of-plane response of unreinforced masonry structures under earthquake excitation is well known with consensus among the research community, this issue is simultaneously one of the more complex and most neglected areas on the seismic assessment of existing buildings. Nonetheless, its characterization should be found on the solid knowledge of the phenomenon and on the complete understanding of methodologies currently used to describe it. Based on this assumption, this article presents a general framework on the issue of the out-of-plane performance of unreinforced masonry structures, beginning with a brief introduction to the topic, followed by a compact state of art in which the principal methodologies proposed to assess the out-of-plane behavior of unreinforced masonry structures are presented. Different analytical approaches are presented, namely force and displacement-based, complemented with the presentation of existing numerical tools for the purpose presented above. Moreover, the most relevant experimental campaigns carried out in order to reproduce the phenomenon are reviewed and briefly discussed.  相似文献   
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This paper provides evidence about location and colocation patterns of manufacturing entrepreneurship and spatial scope of agglomeration economies in the context of a developing country. Using microgeographic data for all Brazilian manufacturing activities and distance-based measures, we find clear patterns of colocalization between entrants and existing establishments, and that these patterns occur mainly at short distances. For activities presenting colocalization between entrants and existing establishments, our results also indicate that a greater number of incumbent establishments in a given location positively affects the number of entrant establishments that decide to locate there, an effect that attenuates rapidly with distance (generally disappearing after 5 km). This pattern of attenuation is robust to both the inclusion of a comprehensive set of controls for observable and unobservable local characteristics and the use of instrumental variables to address remaining endogeneity concerns.  相似文献   
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The Projecto de Carta Arqueológica Subaquática do Concelho de Lagos (PCASCL) aimed to locate, identify and protect existing underwater cultural heritage within the district's coastal area. This project was based on a five‐phase methodology which included archival research, assessment, survey and conservation. PCASCL resulted in the discovery of five shipwrecks and several artefacts which were added to the Portuguese archaeological record. This also led to the development of a secondary project which focused on one of the five shipwrecks as well as proposals for an underwater archaeological park in Lagos.  相似文献   
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Over more than a century, several proposals have been made on the composition and technical features of the pictorial recipes used by Levantine prehistoric painters. In this paper all these proposals are surveyed and tested through systematic experiments to determine the technical affordance of pigments and binders in different pictorial recipes. Experimental results were then used as independent analytical parameters employed as diagnostic criteria to systematically study an archaeological sample of nine sites located in the Maestrazgo region (Spain) and their surroundings. Results reveal that out of 112 experimental recipes, only 16 afforded the production of paintings technically similar to Levantine rock art.  相似文献   
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Cycling is an effective solution for making urban transport more sustainable. However, bicycle networks are typically developed in a slow, piecewise process that leaves open a large number of gaps, even in well-developed cycling cities like Copenhagen. Here, we develop the IPDC procedure (Identify, Prioritize, Decluster, Classify) for finding the most important missing links in urban bicycle networks, using data from OpenStreetMap. In this procedure we first identify all possible gaps following a multiplex network approach, prioritize them according to a flow-based metric, decluster emerging gap clusters, and manually classify the types of gaps. We apply the IPDC procedure to Copenhagen and report the 105 top priority gaps. For evaluation, we compare these gaps with the city’s most recent Cycle Path Prioritization Plan and find considerable overlaps. Our results show how network analysis with minimal data requirements can serve as a cost-efficient support tool for bicycle network planning. By taking into account the whole city network for consolidating urban bicycle infrastructure, our data-driven framework can complement localized, manual planning processes for more effective, city-wide decision-making.  相似文献   
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