1,721,179 research outputs found
Studio su una contaminazione da tetracloroetilene a Cerbaia (FI)
No full textsono riportati gli aspetti geologici di uno studio multidisciplinare che ha interessato il campo-pozzi di Cerbaia appartenente all'acquedotto municipale di San Casciano Val di Pesa (FI). In particolare sono stati approfonditi gli aspetti idrogeologici, inquinologici e la compatibilità del sito con la legislazione nazionale vigente in materi
Chronic Wasting Disease dei Cervidi: Sorveglianza sanitaria, analisi del rischio e ricadute ispettive
Full text linkSCOUT: A small vacuum chamber for nano-wire grid polarizer tests in the ultraviolet band
No full textWithin the Section of Astronomy of the Department of Physics and Astronomy of the University of Firenze (Italy), the XUVLab laboratory is active since 1998 dedicated to technological development, mainly UV oriented. The technological research is focused both on electronics and optics. Our last approach is dedicated to the development of innovative wiregrid polarizers optimized to work in transmission at 121.6 nm. The manufacturing of such optical devices requires advanced technological expertise and suitable experimental structures. First, nanotechnology capability is necessary, in order to build several tiny parallel conductive lines separated by tens of nanometers on wide areas to be macroscopically exploitable in an optical laboratory. Moreover, the characterization of such an advanced optical device has to be performed in vacuum, being air absorptive at 121.6 nm. A dedicated small vacuum chamber, SCOUT (Small Chamber for Optical UV Tests) was developed within our laboratory in order to perform practical and fast measurements. SCOUT hosts an optical bench and is equipped with several opening flanges, in order to be as flexible as possible. The flexibility that has been reached with SCOUT allows us to use the chamber beyond the goals it was thought for. It is exploitable by whatever compact (within 1 m) optical experiment that investigates the UV band of the spectrum. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
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Recession and firm survival: is selection based on cleansing or skill accumulation?
Full text linkRecessions are complex events that create highly unpredictable and unstable business environments. When faced with such events, firm survival depends only limitedly on production efficiency. Rather, it depends on the skills and ability to cope with such complexity. In particular, we expect firms adopting a corporate strategy that makes relatively large use of skills and capabilities to deal with environmental complexity to be less likely to exit during a downturn than firms that do not. We test this hypothesis on the whole population of Italian manufacturing corporations using an open panel that covers the period 2001–2013. The results provide strong support for our hypotheses in the full sample and in the subsamples of small firms, thus suggesting that skill development can successfully empower smaller and more vulnerable firms. Managerial and policy implications are discussed
Studio idrogeologico del territorio comunale di Prato per la valutazione della vulnerabilità intrinseca degli acquiferi nel bacino intrappenninico del Valdarno Medio
No full textUn'accurata ricostruzione geologica ed idrogeologica del territorio pratese, basata su un'alta densità di controllo litostratigrafico (7,6 per km quadrato) ha consentito l'applicazione del metodo parametrico SINTACS con una maglia di discretizzazione molto piccola. La carta della vulnerabilità intrinseca evidenzia situazioni assai diverse anche a breve distanz
Carta della Vulnerabilità Intrinseca all'Inquinamento degli Acquiferi del comune di Prato (Toscana)
No full textThe hidden benefits of abstaining from control
Full text linkThis paper studies the role of negative reciprocity, positive reciprocity and preferences for autonomy in explaining agents’ reactions to control in experimental principal-agent games. While most of the social psychology literature emphasizes the role of autonomy, recent economic research has provided an alternative explanation based on reciprocity. To understand the behavioral mechanisms underlying such reactions, we conduct an experiment in which we compare two treatments: one in which control is exerted directly by the principal; and the other in which it is exerted by a third party enjoying no residual claimancy rights (third-party control). The results indicate that when either the principal or a third party decides to control the average level of effort that is selected by the agents is similar. What changes remarkably are the agents’ reactions to the decision of the other participants not to control. When the principal decides not to control, then the agent exerts greater effort relative to the case when the third party decides not to control. Agents seem to reward principals who abstain from control for their trust, rather than punish controlling ones for their distrust
Are «Happy» Firms All Alike? A Comparative Analysis of Italian and German Manufacturing Systems
No full textRecent works in the comparative economics literature suggest the emergence of a predominant neoliberal model of capitalism. A similar trend characterizes the management literature where competitive advantages are increasingly associated with integrated global engagement, a strategic paradigm leaning on complementarities among r&d, human capital and export/fdi. While both views imply growing institutional and strategic homologation, other studies show only partial convergence in institutional settings and considerable heterogeneity in managerial conducts. This paper explores these issues by comparing the characteristics of Italian and German manufacturing firms. Independently of the country, globally engaged firms are similar in firm-specific variables (size, age, innovation) that are usually associated with good economic performance but remain highly differentiated in institution-related variables. Firms not adopting a global engagement strategy are markedly heterogeneous in all dimensions. Global engagement pushes firms to become more similar across countries, but the variety of institutional settings continues to affect the evolution of business
Sluggish investment, crisis and firm heterogeneity
No full textThe stagnation of investments and its causes have attracted great attention in the recent economic debate. In this paper, we show that during the Great Recession, the flattening of the capital formation rate at the firm level is not due to lower average propensity to invest. Rather, it is the result of growing heterogeneity of choices among firms. While a subset of firms is oriented towards increasing investments, another group substantially divest. The result is a polarization of conducts that tend to cancel each other out, resulting in a flattening of aggregate investment. We argue that this asymmetry in firm's decisions depends on two main factors. The first one is the diversity of corporate strategies, which firms have developed in the past. The second driver is managerial discretion, that plays an important role in the adoption of specific investment/divestment trajectories when faced with a recession. The results of our empirical analysis provide strong support for our hypotheses: after controlling for contextual and firm-specific structural, financial and demographic variables, corporate strategies and managerial discretion in the allocation of liquid assets explain large part of the heterogeneity in investment decisions during the recession. Policy implications are discussed
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