1,721,069 research outputs found
Composizione e presentazione di scale per la misura della soddisfazione dei visitatori di musei in rilevazioni computer-assisted
No full textFlood-induced ground effects and flood-water dynamics for hydro-geomorphic hazard assessment: the 21–22 October 2019 extreme flood along the lower Orba River (Alessandria, NW Italy)
No full textThe knowledge of flood-induced ground effects and flood-water dynamics is a crucial issue for hydro-geomorphic hazards assessment and mapping, and thus for river management and land use planning. This paper and the related 1:15,000 map illustrate the lower Orba River (NW Italy) and its adjacent floodplain geomorphic response to the 21 –22 October 2019 extreme flood.
This was estimated to be a 500-years flood and caused severe damage to cultivated fields, structures, and infrastructures. The research is based on extensive post-flood field surveys, ante- and post-flood GNSS surveys, and aerial photographs interpretation. Intense inchannel sediment mobilization, bank retreats, and channelization structures collapses were surveyed. Furthermore, alluvial gullies, overbank deposits, crevasse splays, and surficial-erosion evidences were mapped over the floodplain, along with the flooded area (17.65 km2) and the flood-water features. A specific legend developed for flood-related and anthropogenic elements mapping in a typical lowland agricultural landscape with regulated rivers is propose
Ophiolites: Geological Heritage with Multifaceted Cultural Values
Full text linkCultural geomorphology is a very recent discipline that studies the geomorphological component of a territory which embodies both a cultural feature of the landscape and its interactions with cultural heritage: this cultural approach concerns the dialogue and cultural integration between humanistic and scientific disciplines and can be extended to all the fields of Earth Sciences. Ophiolite rock masses strongly characterize the landscape: their greenish-black, sometimes red-brown colour; the steep profile of the slopes, which results from their greater resistance to erosion than the surrounding softer sedimentary rocks; the scarce or even absent vegetation cover. The value of ophiolites is not only related to scientific and aesthetic interests, but is also due to historical-geographical, cultural and socio-economic issues. In this research, we present the elements of cultural and landscape value related to the ophiolites of the Northern Apennines, and how these geological and geomorphological features have led to specific relationships with humankind and human geography. Indeed, ophiolites represent characteristic elements of popular culture with immediate reference to toponymy, local legends and religion. Ophiolites are also an element of great strategic importance, as they are crucial for human settlement, with specific reference to defence, and for mining and quarrying activities. The landscape of ophiolites is of great geological, geomorphological, hydrogeological and pedological interest, resulting in a high concentration of geosites, hence on the one hand the opportunity for enhancement and potential geotourism, and on the other hand the need for their protection and geoconservation
Intrinsic environmental vulnerability as shallow landslide susceptibility in environmental impact assessment
Full text linkThis work investigated the susceptibility factors that trigger shallow landslides. In particular, the objective of the research was the implementation of a method to determine the relevant factors that can trigger shallow landslide events. However, with respect to the existing methods, the integration with historical datasets and the inclusion of spatial factors displaying dynamics in the same characteristic timescales were specific features of the developed tool. The study area included the watersheds of the Sessera and Strona rivers in the alpine area of the Province of Biella (Piedmont, NW Italy). The method was developed and tested from two sub-datasets derived from an integrated dataset that referred to an intense event, involving the same area, that occurred in 1968 (2-3 November). This allowed the implementation of an integrated representation of landslides' predisposing factors and the identification and classification in different groups of the areas susceptible to geo-hydrological instability processes. The previously existing databases were verified and integrated into a geographic information system (GIS) environment, giving a potentially sharable source of information for planning purposes. The obtained maps represent a metric of one of the possible intrinsic environmental vulnerability factors for the area under study. Consequently, this method can represent a future instrument for determining the intrinsic environmental vulnerability dependent on landslides within an environmental impact assessment (EIA), as required by the most recent European regulation on EIA. Moreover, the shared information can be used to implement informed policy and planning processes, based on a bottom-up approach. In particular, the availability online of landslide susceptibility maps could support the generation of augmented information-useful for both local administrators and planners as well as for stakeholders willing to implement specific projects or infrastructure in vulnerable areas, such as mountains
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
Genoa ‘the Superba’ old city - Unesco World site - geomorphological heritage
No full textThe coastal city of Genoa is an increasingly popular tourist destination due to its landscape and cultural aspects. Between 1099 and 1815, Genoa was a maritime republic with naval power and it is today the largest harbour in Italy and the second in the Mediterranean. There are, however, some less known aspects of Genoa cultural heritage connected to urban geomorphology and geo-diversity; in addition to the existing landscape and artistic values, these could constitute another element of interest for tourists and residents. Due to historical and recent urban sprawl, the former morphology of Genoa (the ‘Superba’) which contributed to the city military and economic success, is today largely invisible. The stratification of urban sprawl phases characterises many ancient cities in the Mediterranean: despite centuries of human intervention, however, the original features of the territory can still be recognized in present-day landscapes. This study shows the results of long-standing geomorphological surveys carried out in Genoa which allowed a detailed reconstruction of the geomorphological setting of the historical centre, a Unesco World Heritage site since 2006 In addition, this investigation allowed us to identify some sites of geological-environmental and geomorphological interest which are worth of being conserved and promoted for tourism. In particular, we identified three thematic urban trails on the hydro-geomorphological evolution of Genoa historical centre and the environmental-geological settings which conditioned the development of the city: the ‘vertical Genoa trail’, on the funicular Zecca-Righi and along the old ‘creuze’, in order to underline the slopes’ verticality; the ‘Waterways trail’, along the final stretch of the old aqueduct and many historical fountains; the ‘Genoa zero trail’, which develops from east to west across the old centre, looking for traces of the city’s old morphology under the current urban cover. These three trails show how history, urbanisation and geomorphological features of the area are strictly connected. Their promotion for tourism purposes aims to facilitate the understanding and divulgation of what we know about Genoa’s geomorphology, alongside with other important features of interests such as the coastal landscape and the cultural and historical heritage
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