19,622 research outputs found
Popular songs, social struggles and conflictual identities in Mestre-Marghera (1970s-1980s)
Through the analysis of popular song the chapter examines some of the ways in which local radical identities have been transformed as a result of changes in radical cultural practices in Mestre-Marghera, the industrial district in the mainland of Venice
Common vocabularies for collective intelligence - work in progress
Web based applications and tools offer a great potential to increase the efficiency of information flow and communication among different agents during emergencies. Among the different factors, technical and non technical, that hinder the integration of an information model in emergency management sector, is a lack of a common, shared vocabulary. This paper furthers previous work in the area of ontology development, and presents a summary and overview of the goal, process and methodology to construct a shared set of metadata that can be used to map existing vocabulary. This paper is a work in progress report
Digital technologies for virtual recomposition : the case study of Serpotta stuccoes
The matter that lies beneath the smooth
and shining surface of stuccoes of the Serpotta family, who used to work in Sicily from 1670 to 1730, has
been thoroughly studied in previous papers, disclosing
the deep, even if empirical, knowledge of materials science that guided the artists in creating their master-
works. In this work the attention is focused on the solid
perspective and on the scenographic sculpture by Giacomo Serpotta, who is acknowledged as the leading exponent of the School. The study deals with some particular works of the artist, the so-called "teatrini" (Toy
Theater), made by him for the San Lorenzo Oratory in
Palermo. On the basis of archive documents and previous analogical photogrammetric plotting, integrated
with digital solutions and methodologies of computer-
based technologies, the study investigates and interprets
the geometric-formal genesis of the examined works of
art, until the prototyping of the whole scenic apparatus.peer-reviewe
Risk analysis in the surrounding areas of one-runway airports: A methodology to preliminary calculus of PSZs dimensions
The risk analysis of aeronautical accidents has been faced in several countries in order to plan the territory around airports. In the past, many accidents have had serious consequences in the surrounding of airports. To protect the dwellers in these zones, Sapienza University of Rome has studied a risk assessment model of air crash accident during take-off or landing. In force of an agreement with the National Aviation Authority, the major Italian airports have been analyzed. These studies have highlighted the opportunity to know the influence on the territory of the variation of the traffic volume. This knowledge can be particularly useful for forecasting the impact on the territory in a preliminary phase of the master planning activity of the airport. The influence of the traffic volume and the types of aircraft on the sizes of safety areas around airports has been studied with a computer program developed by the authors. As a result of this first analysis, a simplified approach to study the extension of the Public Safety Zones around an airport is presented. This method calculates the area and the main dimensions of PSZs for a number of representative cases of one-runway airports with more than 30000 operations per year. In Europe, there are a large number of one-runway airports and they have similar operational and traffic conditions. Therefore, the results here presented can be applied for a preliminary study to all the one-runway airports, having the same level of traffic of the airports considered in this paper
Fractional differential equations solved by using Mellin transform
In this paper, the solution of the multi-order differential equations, by
using Mellin Transform, is proposed. It is shown that the problem related to
the shift of the real part of the argument of the transformed function, arising
when the Mellin integral operates on the fractional derivatives, may be
overcame. Then, the solution may be found for any fractional differential
equation involving multi-order fractional derivatives (or integrals). The
solution is found in the Mellin domain, by solving a linear set of algebraic
equations, whose inverse transform gives the solution of the fractional
differential equation at hands.Comment: 19 pages, 2 figure
Fractional Spectral Moments for Digital Simulation of Multivariate Wind Velocity Fields
In this paper, a method for the digital simulation of wind velocity fields by
Fractional Spectral Moment function is proposed. It is shown that by
constructing a digital filter whose coefficients are the fractional spectral
moments, it is possible to simulate samples of the target process as
superposition of Riesz fractional derivatives of a Gaussian white noise
processes. The key of this simulation technique is the generalized Taylor
expansion proposed by the authors. The method is extended to multivariate
processes and practical issues on the implementation of the method are
reported.Comment: 12 pages, 2 figure
Intergenerational family ties and the diffusion of cohabitation in Italy
Cohabitation has been spreading in the population during the last thirty years, and this is one of the most striking aspects of wider social changes that have taken place throughout the industrialized world. However, this change did not take place uniformly across Europe. The purpose of this paper is to contribute to the current debate around the compatibility of cohabitation experiences with the Italian cultural context. Using an individual-level diffusion approach we obtain results that are consistent with the crucial role that family ties play in the choice of cohabitation in place of (or before) marriage.cohabitation, diffusion, family ties, first union, Italy
Lobbying for Education in a Two-sector Model
In a two-period model, firms specialized in two different sectors lobby to induce the government to subsidize the type of education complementary to their production. Lobbying is endogenous. We show that, if lobbying is not costly, both sectors will lobby in equilibrium and education policy will induce the same skill composition that would be chosen by the social planner. However, if lobbying is costly, only one sector finds it profitable to offer monetary contribution and direct resources towards the type of education required by its production. Which sector will engage in lobbying depends on relative size, productivity and price in the two sectors.
The impact of health behaviors and life quality on gender differences in mortality
Since gender-specific mortality differences are known a great deal of research has been conducted on this subject. The resulting hypotheses for explaining male excess mortality can be sub-divided into two basic categories: the biological approach (focusing on biological and genetic factors) and the non-biological approach (focusing on behavioral and environmental factors). It has been proven impossible to explain the observed trends in mortality differences between women and men by relying solely on one of the two groups of theories. Recent studies indicate that the majority of the female survival advantage can be attributed to gender behaviors while the impact of biological factors seems to be limited to 1-2 years in life expectancy at birth. The main goal of this paper is to analyze the impact of gender-specific health behaviors and gender differences in life quality using micro level data for Western Germany.Germany, life styles, mortality, sex differentials
- âŠ