13,315 research outputs found
Volunteer Labour Supply: Micro-econometric Evidence from Italy
No full textThis essay examines the evidence in favour of different motivations
for unpaid labour supply in volunteer service associations, using an Italian micro
dataset which allows use of a measure of household income to test the consumption
against the investment hypothesis. The main finding is that the donation of unpaid
activity to a volunteer service association is determined both by the consumption
and the investment motivation, confirming the evidence of studies for the US,
Canada and the UK. Interestingly, however, regional patterns of volunteer labour
reflect the pattern of participation described in the social capital literature. People
who live in regions relatively well-endowed with social capital do significantly
more volunteer labour
Il risparmio energetico in azienda
No full textLa nuova strategia di lungo termine per limitare l’effetto serra dell’UE presentata recentemente dal Commissario per l’Energia Günther Oettinger, si basa sulla riduzione del fabbisogno energetico e sul rafforzamento delle infrastrutture per l’approvvigionamento» prosegue Marco Bettucci. «Per le aziende, soprattutto per il settore industriale, gli standard e gli obiettivi saranno sempre più stringenti ma non mancheranno piani di incentivazione per l’efficienza energetica in azienda. Intervenire per presidiare l’aspetto energetico della produzione diventa oggi non solo un demoltiplicatore del rischio ma anche una vera e propria opportunità di busines
Documentazione dei paramenti della Villa di Giulia Felice a Pompei. Spazi angusti e analisi geometrico-grafica dei rilievi
No full textUAV photogrammetric survey and image-Based elaborations for an Industrial Plant.
No full textThe proposed application of the HBIM methodology for digitising a productive-industrial structure is based on the integration of data from different sources. An aerial photogrammetric survey (Unmanned Aerial Vehicle - UAV) was considered the most appropriate technique for the case. Therefore, a Scan-to-BIM modelling was carried out, keeping in mind a subsequent texturisation of the smart objects employing the photogrammetric images obtained from the UAV survey. Currently, applying the BIM methodology to the built environment is still a challenge; indeed, three-dimensional modelling based on survey point clouds is not automatic. Any BIM software is designed for new constructions, whereas the existing Heritage is characterised by unique and distinctive shapes, where each element has a specific and variable inclination, shape and thickness; therefore, it is necessary to adapt the available tools. Creating intelligent parametric objects capable of representing the unique and singular shapes and geometries of historic architecture is a significant challenge of HBIM modelling. A workflow for the acquisition, processing and management of the survey data and the consequent modelling in a BIM environment of a disused industrial plant previously used as a tobacco factory was formalised. The aim was, therefore, to develop a model that is as close as possible to the real one and, at the same time, still keeps the informative aspects in order to promote the conservation and possible refurbishment of the cultural heritage through the use of photorealistic visualisation tools in real-time. The results confirm the proposed strategy hypotheses and seem to lead to promising future developments
GIS-based morphometric study to genetically characterize dolines in the SE sector of the Classical Karst Region (NE Italy)
No full textStarting from October 2022, in collaboration with ISPRA (Italian Institute for Environmental Protection and Research) and the Geological Survey of the Friuli Venezia Giulia Region, activities have been launched for the creation of the Sheet 110-131 ”Trieste-Caresana” of the Italian Geomorphological Map as part of the CARG project. The territory to be mapped includes a section of the Italian part of the Classical Karst Region, the one limited by the village of Aurisina (NW) and the Rosandra Valley (SE). The Karst area is globally renowned for its pronounced expression of the karst processes and the wide variety of landforms. For these reasons it has represented the cradle of karst studies since the end of the 17th century.
In the Classical Karst area, dolines are probably the most distinctive landforms, being widespread and characterized by significant variety in shapes and sizes. One of the main challenges related to characterization of dolines in a mature karst context is the difficulty in
determining their genetic process with a defined, large-scale applicable criterion. The dissolution process can, over time, conceal markers that allow to clearly distinguish on the field a doline formed by the collapse of a cavity from one generated by the solution of bedrock. A
morphometric approach is proposed to classify dolines in an intensely karstified area on the basis of the predominant genetic process (collapse or solution), using slope steepness as the main parameter.
The carrying out of the remote sensing and field surveying activities, as part of CARG project, has facilitated the collection of a substantial amount of new data on epigean landforms. Specifically, a new high-resolution (0.5 meters) Digital Elevation Model has enabled a
more accurate delineation of these features for morphometric analyses. All karst depressions and their bottoms were digitized through remote sensing starting from the homogenization of existing data and with the support of field surveys. A total of more than 7,000 dolines
have been identified in a total surface area of 115 km2.
Information regarding the edges and bottoms of the dolines have been processed using the GIS zonal statistics tool. The areas related to the slopes of the dolines have been extrapolated and then parameterized according to their steepness. This methodology has allowed for the formulation of a preliminary genetic model for dolines in the study area.
To validate this model, a sample of dolines with clearly defined genesis has been selected. Geophysical investigations, as well as a borehole, have been planned to verify the GIS-based procedure. The geological context has been also considered, paying particular attention to the dip of the strata
UAV photogrammetric survey and Image-Based elaborations for an Industrial Plant
No full textThe proposed application of the HBIM methodology for digitising a productive-industrial structure is based on the integration of data from different sources. An aerial photogrammetric survey (Unmanned Aerial Vehicle - UAV) was considered the most appropriate technique for the case. Therefore, a Scan-to-BIM modelling was carried out, keeping in mind a subsequent texturisation of the smart objects employing the photogrammetric images obtained from the UAV survey. Currently, applying the BIM methodology to the built environment is still a challenge; indeed, three-dimensional modelling based on survey point clouds is not automatic. Any BIM software is designed for new constructions, whereas the existing Heritage is characterised by unique and distinctive shapes, where each element has a specific and variable inclination, shape and thickness; therefore, it is necessary to adapt the available tools. Creating intelligent parametric objects capable of representing the unique and singular shapes and geometries of historic architecture is a significant challenge of HBIM modelling. A workflow for the acquisition, processing and management of the survey data and the consequent modelling in a BIM environment of a disused industrial plant previously used as a tobacco factory was formalised. The aim was, therefore, to develop a model that is as close as possible to the real one and, at the same time, still keeps the informative aspects in order to promote the conservation and possible refurbishment of the cultural heritage through the use of photorealistic visualisation tools in real-time. The results confirm the proposed strategy hypotheses and seem to lead to promising future development
MABS validation through repeated execution and data mining analysis
No full textAgent Based Modelling is the most interesting and advanced approach for simulating a complex system: in a social context, the single parts and the whole are often very hard to describe in detail. Besides, there are agent based formalisms which allow to study the emergency of social behaviour with the creation and study of models, known as artificial societies. Thanks to the ever increasing computational power, it's been possible to use such models to create software, based on intelligent agents, which aggregate behaviour is complex and difficult to predict, and can be used in open and distributed systems. Data mining is born in the last decades in order to help users in finding useful knowledge from the otherwise overwhelming amount of data available nowadays from the web and the data collected every day by companies. Data Mining techniques can therefore be the keystone to reveal non-trivial knowledge expressed by the initial assumption used to build the micro-level of the model and the structure of the society of agents that emerged from the simulation
Temporomandibular Joint Disk Displacement: Etiology, Diagnosis, Imaging, and Therapeutic Approaches
No full text: An estimated 8 to 15% of women, and 3 to 10% of men currently suffer from Temporomandibular disorders, and it has been reported that sounds are a common finding and have been observed in 28% to 50% of the adult population; sounds are almost always connected to "internal derangements" a condition in which the articular disk displaced from its position on the mandibular condyle. Due to the multifactorial etiology of temporomandibular joint dysfunction, any accurate diagnosis based on clinical examination alone often proves to be difficult, so a clinical examination should be utilized together with other imaging methods to determine the relationship between the disk and condyle before and after treatment. In general, management of temporomandibular joint-related conditions is necessary when pain or dysfunction is present, so many surgical or nonsurgical methods of treatment have been reported. The Occlusal splint is 1 of the most widespread treatment it induces a slight vertical condylar distraction and eliminates the occlusal factor, which can be responsible for Temporomandibular joint disturbances, removing the influence of the teeth on the joint position by the slight distraction of the joint which, in turn, enables damaged connective tissue to heal
L'ombra della fotografia tra superficie e forma
No full textIl contributo si inserisce in una raccolta di saggi e scritti dedicati al tema dell'ombra ed alle sollecitazioni proposte dall'esperienza pittorica di Italo Bressan e Marco Pellizzola che da anni si dedicano con le proprie ricerche a questo tema. In particolare ciò che viene in esso richiamato è il ruolo della fotografia nelle sperimentazioni delle avanguardie della prima metà del secolo, ponendo attenzione a quell'artificio della percezione che trasforma l'oggetto nella sua metafora
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