Time filter

Source Type

Ghezzi F.,CNR Institute for Plasma Physics Piero Caldirola | Caniello R.,CNR Institute for Plasma Physics Piero Caldirola | Giubertoni D.,FBK | Bersani M.,FBK | And 4 more authors.
Applied Surface Science | Year: 2014

We present the results of a study where secondary ion mass spectrometry (SIMS) has been used to obtain depth profiles of deuterium concentration on plasma facing components of the first wall of the ASDEX Upgrade tokamak. The method uses primary and secondary standards to quantify the amount of deuterium retained. Samples of bulk graphite coated with tungsten or tantalum-doped tungsten are independently profiled with three different SIMS instruments. Their deuterium concentration profiles are compared showing good agreement. In order to assess the validity of the method, the integrated deuterium concentrations in the coatings given by one of the SIMS devices is compared with nuclear reaction analysis (NRA) data. Although in the case of tungsten the agreement between NRA and SIMS is satisfactory, for tantalum-doped tungsten samples the discrepancy is significant because of matrix effect induced by tantalum and differently eroded surface (W + Ta always exposed to plasma, W largely shadowed). A further comparison where the SIMS deuterium concentration is obtained by calibrating the measurements against NRA values is also presented. For the tungsten samples, where no Ta induced matrix effects are present, the two methods are almost equivalent. The results presented show the potential of the method provided that the standards used for the calibration reproduce faithfully the matrix nature of the samples. © 2014 Elsevier B.V. All rights reserved.

Bassi E.,University of Trento | Leoni D.,University of Trento | Leucci S.,University of Trento | Pane J.,University of Trento | Vaccari L.,Autonomous Province of Trento
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

The open data movement is demanding publication of data withheld by public institutions. Wide access to government data improves transparency and also fosters economic growth. Still, careless publication of personal data can easily lead to privacy violations. Due to these concerns, the Italian law states that even public deliberations must be anonymised for long term publication. In the context of the Trentino Open Data Project (Italy), we first analyse privacy legislation and anonymisation techniques. Then, we propose a semantic open source stack based on entity and word sense disambiguation techniques for publishing anonymised deliberations edited with Norme in Rete software. © Springer-Verlag Berlin Heidelberg 2014.

Dalmazzone S.,University of Turin | Dalmazzone S.,IRIS Interdisciplinary Research Institute on Sustainability | La Notte A.,Autonomous Province of Trento
Journal of Environmental Management | Year: 2013

Extending the application of integrated environmental and economic accounts from the national to the local level of government serves several purposes. They can be used not only as an instrument for communicating on the state of the environment and reporting the results of policies, but also as an operational tool - for setting the objectives and designing policies - if made available to the local authorities who have responsibility over the administration of natural resources, land use and conservation policies. The aim of the paper is to test the feasibility of applying hybrid flow accounts at the intermediate and local government levels. As an illustration, NAMEA for air emissions and wastes is applied to a Region, a Province and a Municipality, thus covering the three nested levels of local government in Italy. The study identifies the main issues raised by multi-scale environmental accounting and provides an applied discussion of feasible solutions. © 2013 Elsevier Ltd.

Casarotto C.,MUSE | Bertoni E.,MUSE | Trenti A.,Autonomous Province of Trento
Rendiconti Online Societa Geologica Italiana | Year: 2015

In occasion of the preparation of a new inventory for Trentino glaciers (2013), all historically available data (1958 CGI, 1987 SAT, 2003 PAT) were digitized in a geographic information system (GIS) with the aim to reconstruct the evolution of the glaciers from the end of the Little Ice Age (LIA) up to date. Through limits of moraines and glacial sediments, as well as those of active rock glaciers, the polygons of the glaciers at the maximum of the LIA (around 1850) were defined in GIS. At that time glaciers filled an area of about 110 km2. In the early 1900s, however, some glaciers disappeared, for example on Monzoni during the World War I. The inventory 2013 (PAT) counts 120 glaciers with total area of about 32 km2. The average annual losses of glacial surface (ÄSy, in [%]) were compared for each of the considered four time periods. We have noticed that these losses have grown exponentially. With the three-dimensional analysis of the 2003 and 2013 inventories, the average annual reduction in thickness was determined for the glaciers representative of the main mountain groups, for example on Adamello Glacier, and it has been observed to achieve values up to 4 000 mm water equivalent. These data, which have a strong seasonal connotation, are comparable to those of monsoon systems, almost as if they would like to witness the tropicalization of climate resulting in global warming.

Szkuta K.,University of Barcelona | Pizzicannella R.,Autonomous Province of Trento | Osimo D.,University of Barcelona
Telecommunications Policy | Year: 2014

In the last 15 years, European countries have invested considerable resources to provide e-government services. Despite of its increasing availability, its level of adoption has not been satisfying. On the other hand, over the last years, coinciding with the web 2.0 trend, the e-government services co-produced by citizens start to appear, often without the support, acknowledgement and even awareness of the government. This trend stems from a well-established tradition of offline co- production of public services, i.e. services provided by the voluntary sector, but brought to an unprecedented scale thanks to the advent of web 2.0. Still, the concept remains not well-defined and its impact is not yet well studied. The paper explores on a limited sets of cases what does it mean to collaboratively deliver online public services; what are the success factors based on the cases under study and what are the incentives for service providers (other than public administration), citizens as users and public administration. The authors propose an ostensive definition of the collaborative delivery of public services: collaborative public services are created and run by government, civil society or by private sector building on the re-use of government data or citizens data. Those services are focused on public goods delivery (e.g. health, education, public transport) and are meant to change the traditional government services by engaging in an open dialogue with public administration about the best way to deliver those services. The analysis of six case studies of innovative collaborative online public services suggests that the online collaborative public service delivery increases its quality with the users growth contrary to the traditional offline service delivery. The study results indicate that the current developers interest lies in delivering complementary services to the government run services rather than substitutive services. The authors propose also the initial list of success factors, enabling conditions, and benefits for all main stakeholders (users, innovators and public administration). © 2014 Elsevier B.V. All rights reserved.

Discover hidden collaborations