45 research outputs found
Efficenza energetica e nuove tecnologie. L'indagine termografica attraverso modelli tridimensionali di edifici realizzati
No full textEfficenza energetica e nuove tecnologie.
L'indagine termografica attraverso modelli tridimensionali di edifici realizzat
Erratum: Acute exacerbation of interstitial lung diseases secondary to systemic rheumatic diseases: A prospective study and review of the literature (Journal of Thoracic Disease (2019) 11 (1621-1628) DOI: 10.21037/jtd.2019.03.28)
No full textIn the article that appeared on Page 1621-1628, Vol 11, No 4 (April 2019) Issue of the Journal of Thoracic Disease (1), the given and family names of author “Fabrizio Pancaldi” was incorrectly published in the original. The author's name should be corrected as Fabrizio Pancaldi, instead of Pancaldi Fabrizio. The authors regret the error
Agende Comunicanti? : le mobilità nella Flexicurity e nell’Agenda Sociale
No full textAbstract Identificando nella governance delle molteplici transizioni nella vita professionale dei lavoratori uno degli aspetti chiave per il futuro delle politiche sociali e dell’occupazione in Europa, il modello della Flexicurity ha rivitalizzato ed elaborato il tema del sostegno alle “mobilità” nell’Unione Europea: mobilità geografica dei lavoratori all’interno del Mercato Unico e mobilità occupazionale degli individui lungo l’arco della loro vita lavorativa costituiscono i principali paradigmi attorno ai quali si svilupperà l’iniziativa politica comunitaria nel prossimo triennio della Strategia di Lisbona.
Con il lancio della rinnovata Agenda Sociale nel luglio 2008, la Commissione ha avuto l’occasione di stabilire una decisa “comunicazione” con l’agenda Flexicurity, definendo in particolare il capitolo – espresso in termini piuttosto vaghi – dei “moderni sistemi di sicurezza sociale”, capaci tra l’altro di supportare gli individui durante le transizioni occupazionali e geografiche. Nonostante l’Agenda Sociale riprenda abbastanza fedelmente i temi aperti dall’agenda Flexicurity, la governance comunitaria delle sicurezze nelle mobilità appare ancora un sistema piuttosto frastagliato di processi politici ed interventi selettivi, dalla cui perdurante necessità di riorganizzazione e concretezza dipende la credibilità della dimensione sociale dell’UE per gli anni a venire
Lo scultore, il poeta, l’inventore, il soldato. Profilo biografico di Giovanni Battista Tassara
No full textL'articolo offre un profilo biografico di Giovanni Battista Tassara, poliedrica figura di scultore, poeta e patriota, noto come lo scultore dei Mille ma molto attivo anche sul piano artistico e culturale
The economic crisis as a trigger of convergence? : short-time work in Italy, Germany and Austria
No full textIn all European countries, emergency policy measures have been introduced in order to counteract the
employment consequences of the economic crisis. In the context of variously composed anti-crisis
packages, many European countries have used Short-Time Work (STW) schemes, that is measures
to subsidize a temporary reduction in working time intended to maintain an employment relationship.
This article focuses on the issue of whether the economic crisis has spurred any convergence in
the use of STW in three social-insurance countries – Austria, Germany and Italy – or whether
policy change has rather occurred in a path-dependent fashion. In order to do so, the article also
adopts a systemic approach, focusing on relationships of complementarity or functional substitution
and equivalence among the various schemes comprising income maintenance systems to tackle the
risks of partial or total unemployment
ESPERIENZE DI DIDATTICA DELLA FISICA IN DIVERSI LIVELLI DEL SISTEMA EDUCATIVO
No full textLa crescente partecipazione delle persone a eventi di divulgazione scientifica, i progetti sostenuti dal MIUR (http://www.progetto laureescientifiche.eu; http://hubmiur.pubblica.istruzione.it/web/ricerca/dif fusione) per promuovere l’insegnamento delle materie STEM (Science, Technology, Engineering, Mathematics) nei diversi livelli del sistema educativo e l’introduzione di argomenti di fisica moderna e contemporanea nelle programmazioni di alcuni Licei (http://www.indire.it/ lucabas/lkmw_file /licei2010///indicazioni_nuovo_impaginato/_Liceo%20scientifico%20opzione %20Scienze%20Applicate .pdf) hanno contribuito, in molti casi, a rafforzare il legame tra scuola, Università e centri di ricerca. Questo legame si è concretizzato nell’istituzione di attività dedicate in cui è stato necessario impiegare metodologie comunicative e didattiche sempre più efficaci. L’articolo presenta lo spettro delle attività realizzate negli ultimi tre anni, a partire dall’anno accademico 2015/2016, dall’Università di Ferrara e dall’Istituto Nazionale di Fisica Nucleare per la comunicazione e la didattica della fisica. Verranno analizzati alcuni casi studio che si differenziano per contenuti, destinatari, contesti e strategie didattiche. In particolare verranno prese in esame le attività dedicate all’insegnamento della fisica moderna e contemporanea condotte con gli allievi delle scuole secondarie di II grado (http://www.fe. infn.it/ orientamento_fisica/courses/laboratori-di-fisica-moderna/), i laboratori scientifici hands-on realizzati con gli allievi delle scuole primarie e un’esperienza di didattica museale inserita in una mostra di storia della fisica dedicata al binomio arte-scienza (www.fe.infn.it/fisicaeme tafisica). Il primo è un caso di out-of-school learning in cui gli allievi delle scuole secondarie di II grado lavorano in gruppo a fianco dei ricercatori, per realizzare un esperimento di fisica moderna, e una volta tornati in classe devono relazionare ai pari quanto svolto e appreso durante l’attività laboratoriale. Nel secondo caso, gli allievi delle scuole primarie sono chiamati a condurre esperimenti guidati per acquisire familiarità con il metodo scientifico, investigando alcuni fenomeni fisici presenti nel quotidiano. Nell’ultimo caso, alcune scoperte della fisica moderna vengono introdotte dalla corrispondenza tra opere d’arte e strumenti scientifici e collegate alla storia di Ferrara
Assessment of the neutron dose field around a biomedical cyclotron: FLUKA simulation and experimental measurements
No full textIn the planning of a new cyclotron facility, an accurate knowledge of the radiation field around the accelerator is fundamental for the design of shielding, the protection of workers, the general public and the environment. Monte Carlo simulations can be very useful in this process, and their use is constantly increasing. However, few data have been published so far as regards the proper validation of Monte Carlo simulation against experimental measurements, particularly in the energy range of biomedical cyclotrons. In this work a detailed model of an existing installation of a GE PETtrace 16.5 MeV cyclotron was developed using FLUKA. An extensive measurement campaign of the neutron ambient dose equivalent H∗(10) in marked positions around the cyclotron was conducted using a neutron rem-counter probe and CR39 neutron detectors. Data from a previous measurement campaign performed by our group using TLDs were also re-evaluated. The FLUKA model was then validated by comparing the results of high-statistics simulations with experimental data. In 10 out of 12 measurement locations, FLUKA simulations were in agreement within uncertainties with all the three different sets of experimental data; in the remaining 2 positions, the agreement was with 2/3 of the measurements. Our work allows to quantitatively validate our FLUKA simulation setup and confirms that Monte Carlo technique can produce accurate results in the energy range of biomedical cyclotrons
Radiation Protection Studies for Medical Particle Accelerators using Fluka Monte Carlo Code
No full textRadiation protection (RP) in the use of medical cyclotrons involves many aspects both in the routine use and for the decommissioning of a site. Guidelines for site planning and installation, as well as for RP assessment, are given in international documents; however, the latter typically offer analytic methods of calculation of shielding and materials activation, in approximate or idealised geometry set-ups. The availability of Monte Carlo (MC) codes with accurate up-to-date libraries for transport and interaction of neutrons and charged particles at energies below 250 MeV, together with the continuously increasing power of modern computers, makes the systematic use of simulations with realistic geometries possible, yielding equipment and site-specific evaluation of the source terms, shielding requirements and all quantities relevant to RP at the same time. In this work, the well-known FLUKA MC code was used to simulate different aspects of RP in the use of biomedical accelerators, particularly for the production of medical radioisotopes. In the context of the Young Professionals Award, held at the IRPA 14 conference, only a part of the complete work is presented. In particular, the simulation of the GE PETtrace cyclotron (16.5 MeV) installed at S. Orsola-Malpighi University Hospital evaluated the effective dose distribution around the equipment; the effective number of neutrons produced per incident proton and their spectral distribution; the activation of the structure of the cyclotron and the vault walls; the activation of the ambient air, in particular the production of 41Ar. The simulations were validated, in terms of physical and transport parameters to be used at the energy range of interest, through an extensive measurement campaign of the neutron environmental dose equivalent using a rem-counter and TLD dosemeters. The validated model was then used in the design and the licensing request of a new Positron Emission Tomography facility
The Extreme Rainfall Events of the 2020 Typhoon Season in Vietnam as Seen by Seven Different Precipitation Products
No full textA series of typhoons and tropical storms have produced extreme precipitation events in Vietnam during the first part of the 2020 monsoon season: events of this magnitude pose significant challenges to remote sensing Quantitative Precipitation Estimation (QPE) techniques. The weather monitoring needs of modern human activities require that these challenges be overcome. In order to address this issue, in this work, seven precipitation products were validated with high spatial and temporal detail against over 1200 rain gauges in Vietnam during six case studies tailored around
the most intense events of 2020. The data sources included the Vietnamese weather radar network, IMERG Early run and Final run, the South Korean GEO-KOMPSAT-2A and Chinese FengYun-4A geostationary satellites, DPR on board the GPM-Core Observatory, and European ERA5-Land reanalysis.
All products were resampled to a standardized 0.02◦ grid and compared at hourly scale with ground stations measurements. The results indicated that the radars product was the most capable of reproducing the information collected by the rain gauges during the selected extreme events, with
a correlation coefficient of 0.70 and a coefficient of variation of 1.38. However, it exhibited some underestimation, approximately 30%, in both occurrence and intensity. Conversely, geostationary products tended to overestimatemoderate rain rates (FY-4A) and areas with low precipitation (GK-2A).
More complex products such as ERA5-Land and IMERG failed to capture the highest intensities typical of extreme events, while GPM-DPR showed promising results in detecting the highest rain rates, but its capability to observe isolated events was limited by its intermittent coverage
Agricultural Genetics and Plant Breeding in Early Twentieth-Century Italy
No full textThis thesis is about plant breeding in Early 20th-Century Italy. The stories of the two most prominent Italian plant-breeders of the time, Nazareno Strampelli and Francesco Todaro, are used to explore a fragment of the often-neglected history of Italian agricultural research. While Italy was not at the forefront of agricultural innovation, research programs aimed at varietal innovation did emerge in the country, along with an early diffusion of Mendelism. Using philosophical as well as historical analysis, plant breeding is analysed throughout this thesis as a process: a sequence of steps that lays on practical skills and theoretical assumptions, acting on various elements of production. Systematic plant-breeding programs in Italy started from small individual efforts, attracting more and more resources until they became a crucial part of the fascist regime's infamous agricultural policy. Hybrid varieties developed in the early 20th century survived World War II and are now ancestors of the varieties that are still cultivated today. Despite this relevance, the history of Italian wheat hybrids is today largely forgotten: this thesis is an effort to re-evaluate a part of it. The research did allow previously unknown or neglected facts to emerge, giving a new perspective on the infamous alliance between plant-breeding programs and the fascist regime. This thesis undertakes an analysis of Italian plant-breeding programs as processes. Those processes had a practical as well as a theoretical side, and involved various elements of production. Although a complete history of Italian plant breeding still remains to be written, the Italian case can now be considered along with the other case-studies that other scholars have developed in the history of plant breeding. The hope is that this historical and philosophical analysis will contribute to the on-going effort to understand the history of plants
