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    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    L’acquifero di Settepolesini di Bondeno: una risorsa idrica potenzialmente alternativa per l’attingimento idropotabile della Provincia di Ferrara.

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    The paper deals of an applied hydrogeology research for the safe yield evaluation of the Settepolesini aquifer (Bondeno, Ferrara) with the main aim to identify new groundwater resources for municipal water supply. The research, based upon a dual approach either of continuous monitoring of Po river lateral recharge processes to the aquifer or of numerical modelling, has been conducted for 3 years (2002-2005) and had the chance to verify the response of the system to peculiar recharge boundary conditions with extreme hydraulic loadings (big flood of the Po river in December 2002, hystorical drought of summer 2003). The paper puts in evidence the complex mechanism of aquifer lateral recharge: pressure transfert is very fast and aquifer susceptibility to recharge signal is affected by season (higher in late winter-spring, lower in autumn); at the same time mass transfert is very low, locally faster in relationship to the occurrence of paleo-channels with higher hydraulic conductivity. Numerical modelling of the system, calibrated against the results of continuous monitoring and with the aim of forecasting groundwater abstraction schemes, has put in evidence that, with an existing lateral recharge of about 600 L/s from the Po river to the I confined aquifer, it is possible to pump, at a sustainable rate, 250 L/s from the same aquifer trough a rather wide-spread well-field; direct water abstraction from Settepolesini lake cannot be higher than a critical threshold between 150 and 200 L/s. Main factors limiting a more severe exploitation are in relation with subsidence risk (to be evaluated with specific investigations) and with the location of hazard centers near to the possible groundwater abstraction points
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