1,721,019 research outputs found
The new “Vegetation map of Sicily (Italy)”: a synthetic overview of the distribution of European habitats on the territory.
Full text linkThe new "Vegetation map of Sicily (Italy)", recently published (Gianguzzi, Papini &
Cusimano, 2015), shows also a synthetic overview of the distribution of European habitats
in the territory; the study area has been extended to small islands circum-Sicilian
(archipelago of the Aeolian; Aegadian, Pelagie Ustica and Pantelleria islands), for a total
area of 25,703 km2.
Our work allowed to resume the knowledge status of the phytosociological studies on
vegetation carried out and to identify the actual plant landscape of the region; the map
was compiled in a Geographical Information Systems (GIS) environment, in order to
produce a cartographic representation in 1:10,000 scale (reduced to a 1:250,000 scale).
At the reference scale 36 phytocoenotic types are represented, 16 of which related to
European habitats of zonal vegetation (Mediterranean maquis, Quercus ilex woods,
Quercus suber woods, Castanea sativa woods, Quercus pubescens deciduous woods,
mesophilous deciduous woods, Fagus sylvatica woods, Betula aetnensis woods, woods
dominated by woody gymnosperms, forest edge shrubs, orophilous pulvinate shrubs,
shrublands and garrigues on substrates of carbonate nature and on substrates of siliceous
nature, Ampelodesmos mauritanicus grasslands, mesophilous and sub-hygrophilous
grasslands and pastures), 11 related to azonal vegetation (riparian vegetation,
psammophilous herbaceous vegetation, chasmo-halophitic vegetation, etc.) and 9
related to anthropogenic vegetation (arable lands and extensive herbaceous crops,
vineyards, olive groves and dry cultivation mosaics, hazelnut groves, irrigated citrus groves
and orchards, greenhouses, built-up areas).
Gianguzzi L., Papini F., Cusimano D., 2015 – Phytosociological survey vegetation map of
Sicily (Mediterranean region). – Journal of Maps:1-7
(http://dx.doi.org/10.1080/17445647.2015.1094969)
Small-scale and high-resolution in geobotanical mapping: the case study of Sicily.
No full textSmall-scale and high-resolution in geobotanical mapping: the case study of Sicily
Un modello di rendicontazione sociale: il caso dell’Istituto e Museo di Storia della Scienza
No full textIl progetto Filiera idrogeno: sviluppo di un mini-van ibrido serie a celle a combustibile
No full textNell’ambito del progetto “Filiera Idrogeno” è in corso presso il Dipartimento di Sistemi Elettrici e Automazione dell’Università di Pisa lo sviluppo di un veicolo commerciale ibrido serie, caratterizzato da un sistema di generazione elettrica a celle a idrogeno e di accumulo al litio. Nella presente memoria viene riassunta l’attività di dimensionamento e di definizione del layout per l’integrazione a bordo veicolo di tutti i componenti del powertrain. In particolar modo è stato progettato e realizzato, in collaborazione con un partner industriale, l’intero azionamento elettrico
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
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