L'Italia tra immigrazione e trasformazioni sociali

This paper aims to illustrate the migration phenomenon in general, paying par-ticular attention to the italian social context; the analysis takes in consideration an interna-tional geopolitical prospective. In the last years, in Italy the incoming migration flows ap-pear to be significantly declining. In this connection several researchers think that a signal like this means a future exhaustion of migration flows in Italy. Based on a data analisys of residence permits, this contribution wants to demostrate that the italian immigration is growing up and, at the same time, it is getting thin. If we consider the data of foreign resi-dents, a territory sociology point of view shows as the migration stability connected to a plurality of national groups, had contributed to the permanent establishment of immigrants. This one concerns of a specific tipology of establishment developped from a connection between historical dynamics, migration chain and socio-economics elements of the differ-ent establishment territories. The final conclusion demonstrates that the rootedness of im-migrants enforced process of change in the organization of territory and of the society

Per una sociologia critica delle migrazioni. Alcune notazioni teorico-metodologiche

In this essay we intend to offer a critical analysis on the relationship between the most widespread conceptions about immigration and those that give the social sciences. In the wake of the most recent studies of the sociology of migration, the aim is to show the importance of a closer relationship between the first and the second. We try to show how Pierre Bourdieu's sociological critique can be effective for an analytical journey of migration that compares with the criticism of the same conceptual categories that have so far led researchers, often using those of political discourse and common sense. A greater interaction between the results of empirical research and conceptual tools allow an elaboration that, broadening the perspective, at the same time considers the search for a general theory of migration ineffective

Insider e outsider nel mercato del lavoro italiano

“Inequalities start in the labour market” has recently warned the ILO in the  Global  Wage  Report  2014/2015.  The  most  recent  interpretations  look  at  polarization  as  a  growing  social  issue.  On  this  track,  we  took  up  and  dropped over the Italian labour market tools, concepts and methods (such  as the insider outsider theory, vulnerable employment, decent work, labor  market  attachment)  in  order  to  rebuild,  through  the  Istat’s  labour  force  survey, the occupational structure of the country up to the crisis’s possible  turning  point.  The  hypothesis  that  emerges  is  the  polarization  of  employment in which outsiderness might become a  determinant factor in  the prolonged stagnation of inequalities

Effect of rootstock on growth, yield and fruit characteristics in cv 'Bianca' pistachio (Pistacia vera L.) trees

This paper, following preliminary field evaluation trials started in 1993, reports a study on the effect of eight different in vitro-propagated clonal rootstocks (P. atlantica and P. integerrima) and one seedling rootstock (P. terebinthus) on the vegetative and productive behaviour of pistachio cultivar 'Bianca'. The trees, budded in 1991, were grown using standard cultural practices for dry-land farming in a sandy clay loam soil, located inland in Sicily. On average, clones of P. integerrima (I-6 and I-2) were the most vigorous rootstocks. Clones of P. atlantica had intermediate vigour. Rootstock significantly affect yield but not fruit weight, kernel to nut ratio, splitting and blanking percentages. The highest yield efficiencies were observed with I-4 and A-3 and A-5, whereas the lowest were obtained with I-6 and I-2 and A-8. Nut shape was significantly affected by the rootstock. Slight differences in leaf mineral content were observed among the tested graft combinations

Aeroelastic stability of two long-span arch structures: A collaborative experience in two wind tunnel facilities

In this paper, a rare example of comparison between sectional and full-aeroelastic model tests is presented. Interestingly, the experiments were conducted in two very different wind tunnel facilities by different research teams. The study concerns two long-span steel arch structures recently built in Milan, Italy, for Expo 2015 World Fair. The structures have only aesthetic purposes and are therefore very flexible and light, which makes them sensitive to wind-induced excitation and prone to aeroelastic instabilities. In particular, in smooth flow an interesting phenomenon of interference between vortex-induced vibration and galloping was observed up to high values of the Scruton number. This aeroelastic instability is very dangerous as large-amplitude vibrations can occur in wind speed ranges where they are not expected, at least for what classical theories for vortex-induced vibration and quasi-steady galloping are concerned. Moreover, the provisions of Eurocode 1 resulted clearly unsuitable and non-conservative to address such a phenomenon. Despite the differences in the facilities and in the models, a good agreement was found between the results obtained in the two laboratories. The major discrepancies were observed in the transitional behavior for intermediate values of the Scruton number, the sectional model showing a more unstable behavior. The tests on the full-aeroelastic model also allowed considering the effect of the angle of wind exposure of the structures, both the in-plane and the out-of-plane vibrations of the arches and the dynamic response to turbulent wind. In particular, a set of tests in smooth flow was performed accounting for the presence of the other arch and of the surrounding buildings. A particular dynamic excitation of the in-plane flexural modes of the structures was observed in well defined ranges of flow speeds when one arch is in the wake of the other. Finally, both experimental campaigns highlighted the need for the installation of tuned mass dampers on the real structures to guarantee their safety. The effectiveness of these devices against the observed galloping-type instability was also verified through wind tunnel tests on the full-aeroelastic model

Managing patients with dengue fever during an epidemic: the importance of a hydration tent and of a multidisciplinary approach

<p>Abstract</p> <p>Background</p> <p>Dengue fever is one of the most common tropical diseases worldwide. Early detection of the disease, followed by intravenous fluid therapy in patients with dengue hemorrhagic fever (DHF) or with warning signs of dengue has a major impact on the prognosis. The purpose of this study is to describe the care provided in a hydration tent, including early detection, treatment, and serial follow-up of patients with dengue fever.</p> <p>Findings</p> <p>The analysis included all patients treated in the hydration tent from April 8 to May 9, 2008. The tent was set up inside the premises of the 2^ndMilitary Firemen Group, located in Meier, a neighborhood in Rio de Janeiro, Brazil. The case form data were stored in a computerized database for subsequent assessment. Patients were referred to the tent from primary care units and from secondary city and state hospitals. The routine procedure consisted of an initial screening including vital signs (temperature, blood pressure, heart rate, and respiratory rate), tourniquet test and blood sampling for complete blood count. Over a 31-day period, 3,393 case recordings were seen at the hydration tent. The mean was 109 patients per day. A total of 2,102 initial visits and 1,291 return visits were conducted. Of the patients who returned to the hydration tent for reevaluation, 850 returned once, 230 returned twice, 114 returned three times, and 97 returned four times or more. Overall, 93 (5.3%) patients with DHF seen at the tent were transferred to a tertiary hospital. There were no deaths among these patients.</p> <p>Discussion</p> <p>As the epidemics were already widespread and there were no technical conditions for routine serology, all cases of suspected dengue fever were treated as such. Implementing hydration tents decrease the number of dengue fever hospitalizations.</p