1,720,964 research outputs found
Paesaggi Artificiali a Venezia. Archeologia e Geologia nelle terre del Monastero di Sant’ Ilario tra alto Medioevo ed Età Moderna
No full textQuesto volume si propone di narrare la storia di un territorio, a cavallo tra terraferma e laguna, affacciato sul centro storico veneziano, nel cui cuore sorgeva il cenobio dei Santi Ilario e Benedetto, le cui alterne fortune rappresentano un filo conduttore per la narrazione.Il protagonista di questa ricerca è dunque il paesaggio e le reazioni uguali e contrarie che hanno caratterizzato nei secoli la relazione tra l’uomo e l’ambiente. Il monastero perduto dei dogi, devastato dalle piene brentane, ha attirato la curiosità di numerosi studiosi, tanto da rendere difficile un elenco esaustivo di quanti si sono occupati di questa materia. Argomenti quali, le origini di Venezia, le trasformazione del paesaggio lagunare, l’idraulica della Serenissima e l’archeologia del XIX secolo, convergevano immancabilmente su questo sito. Questo volume è quindi anche un tentativo di ricomposizione delle ricerche del passato, messe al servizio della ricostruzione del paesaggio.Il testo esordisce con un punto di vista geologico e geomorfologico, dedicando particolare attenzione, oltre ad una sintesi del noto, ai punti che si sono rivelati nodali per la ricostruzione dell’area in epoca medievale. Prosegue quindi con una sintesi delle modifiche ambientali e insediative tra alto Medioevo ed epoca moderna alla luce delle fonti scritte. Quindi l’attenzione si sposta sul sito di Sant’Ilario, partendo dagli sterri ottocenteschi, e procedendo con i risultati recenti dell’archeologia stratigrafica, dalle ricognizioni di superficie ai saggi di scavo, alle sintesi geoarcheologiche. Il capitolo conclusivo si propone come un momento di riflessione sulla storia di Sant’Ilario attraverso i risultati di questa ricerca, che si auspica rappresentino un punto di partenza, e non di arrivo, per la conoscenza del paesaggio dell’area veneziana
Strutture arginali antiche e paesaggio lagunare presso l'isola di Sant'Erasmo, laguna di Venezia.
No full textNell’ambito di una campagna di indagini archeologiche subacquee nei bassifondi a nordovest dell’isola di Sant’Erasmo, nella laguna nord di Venezia, sono stati identificati diversi siti riconducibili a strutture arginali antiche, in vari casi a quelle note localmente come ‘argini-strada’, giacenti
sotto potenti strati di sedimento prevalentemente limoso. L’attribuzione a questa tipologia deriva dall’incrocio dei dati raccolti nelle due fasi delle indagini: il grande sviluppo longitudinale e la larghezza più o meno costante delle anomalie rilevate con la sonda metallica manuale e la natura delle stesse, costituita da pali lignei e accumuli di materiali di reimpiego, fondamentalmente laterizi e anfore, messi in luce con l’apertura di piccoli saggi di scavo. Si rileva una costante discrepanza tra la datazione dei materiali, tutti riferibili ad epoca romana, e quella dei pali lignei, che riconduce ad epoca tardo-antica ed altomedievale. Le evidenze riscontrate contribuiscono a definire il paesaggio lagunare antico, in una zona prossima al litorale.Within a campaign of underwater archaeological investigations in the shallows to the north-west of the island of Sant'Erasmo, in the northern lagoon of Venice, several sites have been identified that can be traced back to ancient embankment structures, in several cases to those known locally as ‘road-embankments’, lying under very thick layers of predominantly silty sediment. The attribution to this typology derives from merging the data collected in the two phases of the investigations: the large longitudinal development and more or less constant width of the findings detected with the hand-held metal probe and the nature of the same finds, consisting of wooden piles and accumulations of reused materials, basically bricks and amphorae, brought to light with the opening of small excavation tests. There is a constant divergence between the dating of the materials, all referable to the Roman period, and that of the wooden piles, which leads back to the late antique and early medieval periods. The evidence found contributes to defining the ancient lagoon landscape in an area close to the littoral zone
Looking for the Mesolithic in the Venetian Plain: first results from the Sile river springs (North-Eastern Italy)
No full textDuring the ’80s of the last century the activity of local amateurs led to the identification and collection of several thousand lithic artefacts mostly referred to the Mesolithic in the area of the Sile river springs (Veneto, North-Eastern Italy). Although representing one of the rare evidence of occupation of alluvial plains by Mesolithic groups in the Italian peninsula, for several years such discoveries have been completely forgotten. Starting from 2012 a new research project aimed at the diachronic reconstruction of prehistoric settlement dynamics related to environmental changes has been undertaken over this area. The preliminary data indicate an intense occupation near the springs of the river Sile by the Mesolithic groups during the ancient and middle Holocene, in close connection to the peculiar features of this wetland area which possibly represented the focus of rich biotopes
suitable for subsistence
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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