79 research outputs found

    The Nature of Technological Change and Its Main Implications on National and Local Systems of Innovation

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    This paper aims at providing a survey (by no means exhaustive) of evolutionary theorizing, where by this we mean all the contributions which possess the methodological building blocks of an evolutionary theory, which this approach identifies as the consideration of dynamics, the presence of microfounded theories, the assumption of bounded rationality and of heterogeneity among agents, the recognition of the continuous appearance of novelty, the view of collective interactions as selection mechanisms, and finally the consideration of aggregate phenomena as emergent properties with nonstable nature. Along this path through the linkages from the micro technological studies to a broad aggregate system, we propose a concept and representation of Innovation Systems -national, regional, sectoral and at the micro levels- whereby their main feature will be related to capture empirically some pieces of the evolutionary approach

    Who settles for less? Subjective dispositions, objective circumstances, and housing satisfaction

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    In recent years there has been growing interest in individuals’ self-perceptions of their wellbeing on the grounds that these complement well-established objective indicators of welfare. However, individuals’ assessments depend on both objective circumstances and subjective, idiosyncratic dispositions, such as aspirations and expectations. We add to the literature by formulating a modelling strategy that uncovers how these subjective dispositions differ across socio-demographic groups. This is then tested using housing satisfaction data from a large-scale household panel survey from Australia. We find that there are significant differences in the way in which individuals with different characteristics rate the same objective reality. For instance, male, older, migrant, and Indigenous individuals rate equal housing conditions more favourably than female, younger, Australian-born, and non-Indigenous individuals. These findings have important implications for how self-reported housing satisfaction, and wellbeing data in general, are to be used to inform evidence-based policy

    High-Throughput Analysis of Synthetic Peptides for the Immunodiagnosis of Canine Visceral Leishmaniasis

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    Globally, the number of new human cases of visceral leishmaniasis (VL) is estimated to be approximately 500,000 per year. This is the most severe of all forms of leishmaniasis, and the zoonotic form of VL, caused by Leishmania infantum (also known as Leishmania chagasi), represents 20% of human visceral leishmaniasis worldwide; additionally, its prevalence is increasing in urban and peri-urban areas of the tropics. In Brazil, the identification and elimination of infected dogs, which act as a reservoir for Leishmania parasites, is a control measure employed in addition to the use of insecticides against the vectors and the identification and treatment of infected humans. Currently, the diagnostic methods employed to identify infected animals are not able to detect all of these dogs, which compromises the effectiveness of control measures. Moreover, one of the most important issues in controlling VL is the difficulty of diagnosing asymptomatic dogs, which act as parasite reservoirs. Therefore, to contribute to the improvement of the diagnostic methods for CVL, we aimed to identify and characterize new antigens that were more sensitive and specific and could be applied in epidemiologic surveys
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