1,720,978 research outputs found
L'età del Ferro a Sansepolcro. Attività produttive e ambiente nel sito di Trebbio
No full textRicerche archeologiche ancora in corso sull’antico insediamento di Trebbio localizzato nella piana del Tevere a pochi km a sud di Sansepolcro, hanno introdotto elementi di grande novità nel panorama delle conoscenze sulla tarda protostoria di quest’angolo di Toscana, incuneato tra Umbria marche e Romagna. Ne è emerso un insospettato quadro storico risalente all’età del ferro (VIII-VI secolo a.C.), che vede la formazione di un vasto centro di facies umbro-picena, con le sue aree abitative e artigianali, nell’ambito delle quali ha destato particolare interesse il rinvenimento in località Spinellina, di un settore produttivo destinato alla cottura di vasellame ceramico. All’edizione integrale della prima campagna di scavi (2000) effettuata in quest’area del sito di Trebbio è appunto dedicato il presenta volume, in cui archeologi, archeometri e specialisti delle scienze naturali contribuiscono con i loro rispettivi interventi a mettere a fuoco una vasta gamma di problematiche – culturali, tecnologiche, ambientali ed economiche – sollevate dai contesti e dai reperti mobili ivi rinvenut
Eventi alluvionali nell’ambiente carsico pugliese
No full textGli eventi alluvionali in ambiente carsico sono tra i più frequenti e dannosi pericoli geologici, in un contesto di per sé fragile e vulnerabile. Spesso essi risultano in elevati costi economici per la società, causando danni ad attività e infrastrutture antropiche. La regione Puglia, ove per gran parte del territorio affiorano rocce solubili, interessate da fenomeni carsici, presenta una lunga serie di eventi alluvionali, distribuiti in pratica sull’intero comprensorio regionale. Partendo dalla descrizione di alcune zone significative della regione, il presente articolo esamina i caratteri alluvionali di questi eventi, inserendoli nel locale contesto carsico, con l’obiettivo di contribuire all’approfondimento della conoscenza su tale tematiche e
sulla interazione tra gli eventi di piena e l’ambiente urbanizzato. Nel dettaglio, si citeranno o esamineranno eventi avvenuti nel Promontorio del Gargano, nella città di Bisceglie, nel settore di Murge Basse compreso tra Putignano e Castellana-Grotte, nelle città di Ostuni e Ginosa e nella Penisola Salentina
Valutazione della qualità dei servizi agli studenti offerti dalla Facoltà di Economia dell'Università degli studi di Bari Aldo Moro
No full text
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
Occurrence of flash floods in the karst environment of Apulia (Southern Italy)
No full textFloods in karst environment are among the most frequent and damaging geological hazards, due to hydraulic and hydrogeological peculiarities of the karst terrains. Since absence of water at the surface is one of the main features characterizing karst, the occurrence of floods in consequence of prolonged rainfall, or of concentrated and intense rainstorms, may often result in severe damage to human activities and infrastructures, threatening lives as well. Apulia, the south-eastern sector of Italy, almost entirely consisting of soluble rocks intensely affected by karst processes, is not an exception at this regard. Flash floods have repeatedly characterized the history of many Apulian towns, and the number of events, with consequences on the society, has increased in the last decades, due to expansion of the urbanized and industrial areas. This was often carried out without considering the peculiarity of karst, and the possibility of occurrence of flash floods. Therefore, the effects have often been devastating, in terms of both casualties and economic losses. Through description of a series of events, that have hit different sectors of the region, this article presents a documented chronology of the events occurred in Apulia, in the attempt to contribute to build a deeper knowledge about the areas inundated by floods, their triggering conditions, and the relationships with human activities. The Apulian sectors that will be dealt with are: the Gargano Promontory, where, at the beginning of September 2014, severe rainstorms caused many types of geohazards, including floods, and claimed some casualties; the town of Bisceglie, north of Bari, where the system of temporary water courses (locally named lame) work as the main water flow way during floods; the sector comprising Putignano and CastellanaGrotte, in the Low Murge, where an high number of swallow holes had been closed in recent decades; the coastal area downhill from Ostuni, where several tourist resorts are located; the town of Ginosa, where two different flood events in 2013 sadly resulted in 4 victims; and the Salento peninsula, where many urban centers are interested by floods and inundations, even in consequence of not significant rainfall events. In addition, to analyse the pluviometric events causing the floods, the role of the geological and morphological features in karst will be examined, also as regards the transport of solid materials by the flowing water, that may significantly contribute to the registered damage
- …
