1,720,960 research outputs found

    Le implicazioni filosofiche della cognizione vegetale

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    Le specificità strutturali-funzionali delle piante, organismi sessili e privi di sistema nervoso, offrono l’opportunità di ripensare criticamente e ampliare gli orizzonti della ricerca sul tipo ed estensione dei processi e delle capacità cognitive presenti nel mondo vivente, potendo fornire, attraverso l’individuazione degli approcci epistemici più promettenti, una visione più approfondita e integrata della cognizione biologica, con particolare attenzione alle interazioni di tipo ecologico nello sviluppo inevitabilmente relazionale degli organismi. Lo scopo di questa tesi è avviare una riflessione interdisciplinare sul potenziale chiarimento e arricchimento, derivante dagli studi in corso sulle capacità delle piante, di alcune importanti questioni trattate, in particolare, negli studi sul comportamento, in scienze cognitive e in filosofia della mente. Impostando il lavoro su una ricostruzione storica degli argomenti, a cui segue una parte tratta dalla più recente letteratura scientifico-sperimentale sulle caratteristiche e abilità delle piante, e concludendo con una parte relativa alle implicazioni teoriche di questo tipo di studi in vari ambiti della ricerca filosofica, si vedrà in che termini e in che misura lo studio dei comportamenti vegetali, integrando e riproponendo le tradizionali domande in materia di cognizione, a partire da un diverso punto di partenza, possa originare nuovi interrogativi, aiutando ad approfondire e riformulare, forse anche rivoluzionare, alcune categorie abituali di analisi, reinterpretando, ad esempio, i concetti di percezione, azione, comportamento, memoria, apprendimento, attenzione, cognizione e mente

    L'era dell'atomo

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    It’s so tiny that even a million of them placed in line would be no thicker than a sheet of paper. It can destroy or heal and be used in medical diagnoses or as an access key to the realm of the infinitely small. Humanity’s curse or salvation? The atom is the basic building block of matter, its nucleus fuels the Sun and could be an eternal source of safe, clean energy. This text is targeted at non-specialists and addresses prejudices that have always plagued the atom; it provides a comprehensive account of our understanding of atoms, ranging from the dawn of nuclear physics to modern atomic models, up to recent energy studies, and touches upon fields such as nanomaterials, medicine, and communication

    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

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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