1,720,965 research outputs found
Unusual becoming Usual: recent persistent-rainstorm events and their implications for debris flow risk management in the northern Apennines of Italy
Full text linkThe alluvial events of Parma (13 October 2014) and Piacenza (13-14 September 2015) in the northern Apennines of Italy have had significant effects in terms of flooding and morphological changes along the main and secondary rivers of the affected areas. The paper presents a summary of the characteristics of the rainstorm events, as well as of the triggered debris flows and their consequences on infrastructures. In the perspective of an extremization of rainfall regimes as a consequence of ongoing climate changes, these phenomena might become quite usual in the future and should be further studied in order to define regional-specific triggering thresholds, analyse precursors from weather radar datasets and assess susceptibility on a regional scale basis
Debris flows in Val Parma and Val Baganza (northern Apennines) During the October 2014 alluvial event in Parma Province (Italy)
No full textDuring the October 2014 alluvial event in Parma province, which also caused the city of Parma to be partially flooded, several debris flows affected the upper Val Parma and Val Baganza (northern Apennines, Italy) causing severe and widespread damages to check-dams, roads and other infrastructures. The meteorological event reached intensities as high as 80 mm/hour, which is well above the thresholds presented in literature for the alpine area. The result was the occurrence of tens of debris flow along the Mt. Cervellino - Mt. Vitello relief, which were triggered in zones of failure of slope debris coverage along the streams, remobilized and scoured debris along the track and destroyed several check dams and damaged roads that were overflown by debris. Since debris flows in the northern Apennines are considered quite rare events, their hazard is generally underestimated or overlooked. The event in the Parma province, at the opposite, warns against this potentially destructive events that, in a changing meteorological framework, might result much more frequent and widespread than expected also in the northern Apennines
Il contributo di Giorgio Amendola alla formazione del pensiero europeista del Pci: una prospettiva di indagine storica (1962-1980)
No full textil "dominio economico tedesco" e la propaganda antieuropea ai tempi della Guerra fredda: il caso italiano
No full textFra interdipendenza strutturale e integrazione. Stati Uniti ed Europa dal secondo dopoguerra alla competizione globale
No full textI rapporti fra Stati Uniti e paesi dell'Europa occidentale si caratterizzarono nel periodo successivo al secondo conflitto mondiale per due dinamiche strutturali fra loro collegate: da un lato il disegno volto a creare uno stabile e articolato legame atlantico all'insegna della leadership statunitense, dall'altro l'integrazione europea. Queste due dinamiche non hanno impedito l'emergere, soprattutto al termine della guerra fredda, di una crescente competizione interatlantica
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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