1,720,956 research outputs found
Relitto altomedievale di barca a fondo piatto rinvenuto nel canale Passaora, Isola di Sant’Erasmo, laguna nord di Venezia
No full textIl contributo è dedicato al relitto di una barca a fondo piatto rinvenuto nel canale Passaora, presso l'isola di Sant'Erasmo, laguna di Venezia. Il relitto, privo di contesto stratigrafico originale a causa della forte energia dinamica attiva nel canale, presenta una lunghezza di 2,50 m e una larghezza di 0,80 m. Si conservano solo parte del fondo dello scafo e cinque piane (madieri). L'analisi radiometrica di un campione prelevato da una tavole del fondo, costituita da legno di abete rosso, ha fornito una datazione tra VI e VII secolo d.C. Il relitto è stato indagato anche con ecosonda acustica.The paper deals with the wreck of a flat-bottomed boat found in the Passaora channel, near the island of Sant'Erasmo, Venice lagoon. The wreck, which lacks an original stratigraphic context due to the strong dynamic energy of stream in the channel, is 2.50 m long and 0.80 m wide. Only part of the bottom of the hull and five "piane" (floor-timbers) are preserved. Radiometric analysis of a sample taken from a bottom plank, made of spruce wood, provided a date between the 6th and 7th Centuries AD. The wreck was also investigated by means of acoustic echosounder
Laguna di Venezia. Isola della Certosa. Indagini archeologiche subacquee
No full textRelazione preliminare delle indagini archeologiche subacquee condotte nel 2010 e 2011 sulle strutture arginali di età romana presso l'Isola della Certosa, laguna di Venezia.Preliminary report of the underwater archaeological investigations carried out in 2010 and 2011 on the Roman-age embankment structures at Certosa Island, Venice Lagoon
Il paesaggio costiero antico nella laguna nord di Venezia: recenti acquisizioni dall’archeologia subacquea
No full textIn epoca antica la laguna di Venezia era parte di una ampio e articolato sistema di vie d'acqua nell'alto Adriatico, composto da una sequenza continua di lagune, laghi costieri, foci e canali. Le fossae che attraversano l'attuale laguna di Venezia costituivano la continuazione di un sistema idroviario composto da corsi naturali e canali artificiali (le citate fossae) che si sviluppava tra Ravenna e Aquileia. Almeno in parte di origine pre-romana, questo sistema si sviluppò agli inizi dell'Età imperiale. Due strutture di età romana identificate nel Canale San Felice possono identificarsi come impianti di ausilio alla navigazione interna. si tratta di una struttura in mattoni sesquipedali rinvenuta presso Treporti e di una costerna-pozzo, sempre in sesquipedali, in località Ca' Ballarin.In ancient times, the Venice lagoon formed part of a network of inland waterways used for navigation in the northern Adriatic, an almost continuous system of lakes, river mouths and canals.
The fossae which cross the present Venice lagoon are the continuation of a complex system of inland waterways consisting of natural watercourses and artificial canals (the aforementioned fossae) which began in Ravenna and continued to Aquileia. At least partly pre-Roman in origin, this system of navigable canals was expanded in the first Imperial Age.
Two Roman buildings discovered in the present San Felice canal could be interpreted in light of this situation, providing navigational assistance at the points linking the sea and inland routes. These consist of the foundations of a large sesquipedalian structure found near Treporti and a cistern-well discovered near Cà Ballarin at Lio Piccolo, subject to lengthy survey and restoration campaigns
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe 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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