1,721,028 research outputs found
Remote sensing and interdisciplinary approach for studying volcano environment and activity
No full textRemote sensing (RS), also known as “Earth Observation (EO)”, is a well-established methodology for multidisciplinary applications and represents a neuralgic tool both for research and didactics, since it makes it possible not only to obtain very useful and interesting data and information but also to implement and make use of an integrated approach for collecting inputs from different sources, processing and interpreting them and presenting the results through a variety of multimedia outputs. That is obviously true also in the case of volcanic environments and activities, in the quiescence, activity and post-event phases. During the last years, the applications of satellite and aerial images, generated from data acquired in different spectral bands, namely in the visible, infrared and microwave parts of the electromagnetic spectrum, have enormously increased. Thus, in this paper, after a brief framework about some basic elements of remote sensing, we above all provide a literary review, underlying some important examples which permit us to develop interdisciplinary approaches and to highlight different fields of application. Then, after having provided some input in a didactic perspective, we synthetically describe the main peculiarities and kind of activities that characterise some volcanoes, for which the European Space Agency (ESA-ESRIN) has provided relevant images. Then, for each volcano, we propose an interpretive analysis of these images, supported by the previous explanations, in order to propose a possible scheme of referral and some guidelines to define a geographical and interdisciplinary framework aimed at showing new didactic and research horizons, where theoretical, methodological and applicative knowledge and skills converge, collaborating in a socially useful operative field
The evaluation of "social risk" due to volcanic eruptions of Vesuvius
No full textA re-evaluation of the demographic risk per number of inhabitants due to volcanic eruptions in the Vesuvius area was made on the basis of the Census data of 2001. We introduced other variables (population density and number of houses) which permit to upgrade the existing models. Using the Geographical Information Systems (GIS) and particularly ArcGIS 9.0 software we have elaborated a land use map, an urbanization map and a series of new risk maps which lead us to obtain a map of what we call ‘‘social risk’’ due to volcanic eruptions, derived from the combination of the data used and the overlay of the maps. We have proposed an integrated model which can be easily updated to follow the evolution of the volcanic risk in the overpopulated Vesuvius area, with the aim of supporting the planning of Civil Protection and Local Authorities, for an evacuation scenarios and the possibility of taking into account the potential infrastructural damages. This methodology can be tested in other volcanic regions
Nuovi scenari di rischio nell’area vesuviana
No full textWhile waiting for the Census data for 2011, which will be used for a re-evaluation of the «social risk» due to volcanic eruptions of Vesuvius as a result of the combination of different variables, a re-evaluation of the volcanic risk per number of inhabitants was made on the basis of the Istat data of 2010 published in the Bilancio demografico e popolazione residente al 31 Dicembre. In fact, we need to do new research and update works in progress in order to have detailed information on the municipalities exposed to very high and high risk. For the purpose of providing backup to the strategic management of potential emergencies and defining a specific framework, we also provide an analysis of the recent demographic variations, taking into consideration the natural and
the migratory balance. This work also tries to provide a basis for future papers which intend to involve also the municipalities of the Phlegraean Fields (Campi Flegrei), according to comparable models, in order to draw up a classification of the Italian municipalities faced with the highest volcanic ris
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
Vent area and depositional mechanisms of the Upper Member of the Neapolitan Yellow Tuff (Campi Flegrei, Italy): new insights from directional fabric through Image Analysis
No full textVariations 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
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