1,720,960 research outputs found
Assetti territoriali romani in aree umide
No full textThis research systematically investigates how Romans managed humid areas and which drainage works were carried out to improve the conditions of such lands. In order to do that, it was important to focus the concept of wetland in modern ages and which lands might be considered accordingly. The analysis of classic sources provided the key to understand the latin terminology referred to these environments. This allowed their identification and to establish their relationships with Romans. The next step was the exam of the archaeological sources in order to exclude all the water supply network and to focus on those of water management. Disciplines like hydrogeology, hydraulic engineering and agronomy were necessary to better analyse the nature of ancient working and to organize the collected data. Eventually, all the structures related to the drainage systems within the roman centuriations framework were examined.This research represents a detailed analysis of the interactions among man, environment and waters. In addition, it focuses on how Romans were very well experienced in such matters and how such hydraulic techniques have been continuously carried on since Roman times
...via Anniam influentibus palustribus aquis eververatam... Tradizione, mito, storia e katastrophé di una strada romana
No full textGeomorphological and Geoarchaeological Evidence of the Medieval Deluge in the Tagliamento River (NE Italy)
No full textBetween the second part of the sixth century
and the seventh century, many regions of
Europe have been characterized by dramatic
changes in the hydrographic setting, probably
related to a strong cooling phase. In northern
Italy, the chronicle of a huge flood event
referred by the Lombard historian Paul the
Deacon to the autumn of 589 AD has achieved
a major importance and induced many
researchers to attribute to this “deluge”
episode many of the floods occurred during
early Middle Age. In this paper, we consider
the alluvial system of Tagliamento, which is
one of the main rivers fed by south-eastern
Alps and experienced a strong avulsion phase
between the sixth and eleventh centuries. In
that period, the river activated up to three
branches and the hydrographical changes
strongly influenced the human activity. This
work critically reanalyses both published data
and new stratigraphic and archaeologic evidence
in order to assess and quantify the times
and modes of this instability phase. The data
suggest the occurrence of an extreme flood
event at the end of the sixth century, which
was also responsible for the burial of the
ancient city of Concordia Sagittaria. The
geochronological constraints suggest the possibility
that this catastrophic episode occurred
in 589 AD, thus confirming the Medieval
Chronicle. Anyhow, other alluvial events
occurred in the distal plain of Tagliamento
River slightly before and after that moment
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
La via Annia: dall'analisi al possibile tracciato
No full textNell’ambito del progetto di recupero e valorizzazione dell’antica via Annia, un gruppo di ricerca del Dipartimento di Archeologia dell’Università di Padova ha condotto un lavoro di censimento sistematico delle evidenze archeologiche presenti nella pianura veneto-friulana, segnatamente circoscritto a quella porzione territoriale attraversata in epoca romana dalla via Annia. I dati raccolti sono stati inseriti in un apposito database on-line con operatività in multiutenza. Si tratta di un sistema relazionale strutturato secondo due distinte partizioni: la prima dedicata ai ritrovamenti direttamente correlati all’infrastruttura stradale (tratti viari, ponti ecc.); la seconda relativa a tutte quelle evidenze archeologiche (strutture e manufatti) presenti nella fascia di pertinenza dell’ipotizzato asse stradale. Il database, compilato avvalendosi quasi unicamente di dati editi, è stato concepito non solo per essere in ogni momento aggiornabile con nuovi records, ma anche per fornire la possibilità di un collegamento immediato tra singole schede o gruppi omogenei di schede (tratti stradali, necropoli ecc.) e la piattaforma interattiva Google Earth, con la conseguente localizzazione georeferenziata dei dati selezionati o di classi omogenee di rinvenimenti: si è così creata una carta archeologica “dinamica”, georeferenziata e corredata di piante e/o immagini, adattabile alle esigenze della ricerca
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
- …
