1,720,995 research outputs found
Rapid building damage assessment using EROS B data: the case study of L'Aquila earthquake
No full textRecent events reveal that the use of very high resolution satellite images for "early damage assessment" after seismic events can be very useful and call for deeper investigation by the scientific community. In the present study five monoscopic panchromatic images covering the historical city-center of L'Aquila, GCPs and DEMs from medium scale cartography were used because they are frequently utilized in emergency applications. The interest was to make a deeper investigation on geometric characteristics of those images, that were not fully investigated by the scientific community and to study the detection capabilities for the specific post seismic application, so several orientation and detection tests were executed
Impiego di immagini satellitari EROS B per l’accertamento e la verifica dei danni post-sisma per la città dell’Aquila
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Assessing mental health therapeutic communities functioning
Full text linkEmpirical and clinical evidence shows that therapeutic communities produce changes in people’s mental health and well-being. Treatment in communities has effects on improving interpersonal relationships, acceptance among members, ability to recognize other people’s feelings, symptomatology, life satisfaction and self-esteem. This paper aims to investigate which factors can explain the treatment effectiveness, measured by an index which incorporates the point of view of the communities staff members, by means of a beta regression model with random intercept. The results show the influence of some organizational dimension as well as staff roles, providing a meaningful insights into the functioning of mental therapeutic communities with implications of particular interest to the mental health sector stakeholders
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
Test of a building vulnerability model for L'Aquila earthquake
No full textDuring 2002, as part of a collaboration between the National Civil Protection Department and the University of L'Aquila, a methodology for assessing the vulnerability of an urban center was developed. The methodology considered the urban territory as well as the complex of physical and functional relationships of the urbanized territory and not a simple summation of elements, in order to analyze simultaneously the multiple factors necessary to determine the vulnerability of the whole center. This methodology was applied to the city of L'Aquila and two other smaller towns, and in previous studies, some maps representing the possible vulnerability of buildings were prepared for the centre of the city of l'Aquila. These maps graduate the possible vulnerability in four different classes and have a maximum resolution of 25 m. After the earthquake in April 2009, it is possible to assess the accuracy of the model comparing predicted vulnerability with the map of fitness for human habitation realized after the earthquake. The vulnerability map considered the buildings situated on the emergency routes, therefore, the comparison was carried out only for these areas. After the seismic event, the map of fitness for human habitation and the actual post-earthquake damage were available: these results were archived in an Access database and also mapped on a 1:2,000 city map. To assure the consistency of these data, Access databases were geocoded and so cross checked with the results reported in the map files. The maps so obtained and verified were compared with the maps of the predicted vulnerability, rasterizing the information reported on the two maps at the same resolution. Thus, it has obtained a raster file containing differences between the vulnerability predicted and observed damages, evidencing that the biggest differences are limited to some small areas. Observing the localization of these areas, it seems that there may exist a correlation between biggest mismatch and some geophysical characteristics of the terrain that can cause local attenuation or amplification of the seismic waves. However, further investigations have to be carried on to confirm these initial results. The main elaborations were performed in open-source packages: GRASS, Q-GIS, and gvSIG. © Società Italiana di Fotogrammetria e Topografia (SIFET) 2011
Improving traditional change detection with dsm for update cartography in urbanized areas after seismic events
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