903 research outputs found
Integrazione. Le barriere della comunicazione
L'importanza ormai ampiamente riconosciuta, della comunicazione interculturale come strumento di integrazione sociale e culturale degli stranieri e, dunque, come obiettivo delle politiche pubbliche. L'idea di integrazione cui si fa riferimento in questo contesto, rimanda ad una interazione positiva, sostenuta da una adeguata strategia comunicativa , con l\u2019obiettivo di favorire percorsi di inclusione e partecipazione alla vita pubblica locale.
Alla base di questa idea di integrazione vi \ue8 la consapevolezza che il riconoscimento di taluni diritti di per s\ue9 non \ue8 sufficiente a garantirne il rispetto e la possibilit\ue0 di esercizio da parte dei soggetti titolari, se non accompagnato dalla messa in atto di strumenti di informazione e facilitazione adeguati ed efficaci a rendere effettivo tale esercizio.
Realizzare condizioni di pari opportunit\ue0 di accesso ai servizi, compresi quelli informativi, \ue8 dunque un obiettivo ineludibile di una politica impegnata a promuovere la rimozione di ostacoli di ordine linguistico, sociale e culturale che impediscono alle persone straniere o a particolari porzioni della popolazione straniera (es. donne, richiedenti asilo e rifugiati, nomadi) la reale fruizione del \u201csistema dei servizi pubblici\u201d
LCA of Different Construction Choices for a Double-Track Railway Line for Sustainability Evaluations
The international commitment to achieve carbon neutrality in the next few decades has oriented human activities towards the preservation of natural and non-renewable resources. In this context, a great research effort has been devoted to the search for sustainable solutions for the infrastructure construction sector, based on a thorough assessment of the environmental impact (EI). In this regards, Life Cycle Assessment (LCA) is considered one of the main components of Environmental Impact Assessment (EIA) and, for a comprehensive analysis, all the costs incurred by stakeholders during the useful life of the infrastructure should also be taken into account, applying the Life Cycle Cost (LCC) methodology. So far, there is a lack of combined LCA and LCC analyses of railway projects to support a proper sustainable decision-making process at a project level. Therefore, this study aimed to contributed to this topic by determining the environmental effect and related costs of different planning and construction choices in terms of material and maintenance strategies. For this purpose, first, an LCA of typical railway infrastructures with a ballasted track was developed. The case study considered two different functional units of a double-track railway line: 1 km of embankment section and 1 km of a cut section, in straight alignment. After defining five alternative railway infrastructure scenarios with different materials (virgin or recycled material) and construction methods (e.g., lime stabilization), two different railway track maintenance approaches were analysed. SimaPro was used to analyse the case study, and the results were compared with those obtained using the PaLATE software, suitably adapted for use in the railway sector. Finally, a cost analysis was carried out using Life Cycle Cost (LCC) methodology for all the scenarios analysed. The results obtained in terms of EI and related costs of each scenario provide useful information, allowing a sustainable planning approach: as a general result, the initial construction phase always involves the larger part of the total environmental impact while the material production is the most polluting phase, reaching percentages always higher than 50% of the total
Parents as Critical Influence: Insights from Five Different Studies
Parents play a number of roles in engineering education: they can motivate children’s interest in engineering in early childhood, as well as later when their child is in the process of selecting a major at college, they can provide support in learning engineering concepts and thinking skills, and can serve as role models if they themselves are engineers. Several empirical studies have shown that parents play a significant role in the occupational aspiration and career goal development of their children. In addition,parents’ own beliefs and aspirations have been found to be important factors in children’s career and academic aspirations. In recent reviews regarding children’s career development, parents were highlighted as crucial and important figures in developing occupational awareness in their children. Additionally children have more understanding of the parents’ occupations than other occupations. Retrospective studies have also revealed that parents are a significant motivator, especially for low socio-economic students to enter into engineering. Finally, parents can provide scaffolding and other support as children learn engineering concepts and skills.Using multi-case analysis, this paper will examine the role of parents in engineering education through five distinct studies. The first study, GRADIENT, looks at how parents engage in an engineering activity with girls aged 3-11 within two different informal settings and how parent gender has an impact on their interactions. The Informal Pathways to Engineering (IPE) project investigates how informal engineering programs support engineering-related learning over time with middle school students and their support system of parents, teachers and other informal educators. The INFUSE study looks at conversations between engineering parents and their children while reading an engineering storybook. A fourth study examines how intersectionality influenced the experiences of nine female students in high school engineering where the interview data from the students and their parents reveal that institutions of race, class, and gender within their families play a significant role in these young women\u27s interest in and entry into engineering. The last study investigates the different ways that parents with an engineering background help their children to learn about engineering via interviews with the parents.The collection of these five studies provides unique insights into and a more comprehensive understanding of the ways that parents can and do play roles in PreK-12th grade students’ engineering education
First experimental evidence of 2He decay from 18Ne excited states
Two-proton decay from 18Ne excited states has been studied by complete kinematical detection of the decay products. The 18Ne nucleus has been produced as a radioactive beam by 20Ne projectile fragmentation at 45 AMeV on a 9Be target, using the FRIBs in-flight facility of the LNS. The 18Ne at 33 AMeV incident energy has been excited via Coulomb excitation on a natPb target. The correlated 2p emission has been disentangled from the uncorrelated 2p emission using a high granularity particle detector setup allowing the reconstruction of momentum and angle correlations of the two emitted protons. The obtained results unambiguously show that the 6.15 MeV 18Ne state two-proton decay proceeds through 2He emission (31%) and democratic or virtual sequential decay (69%)
Past, present and future of radioactive ion beams produced In-Flight at LNS
The FRIBs@LNS facility produces Radioactive Ion Beams (RIBs)
at intermediate energies, by projectile fragmentation. The possibility of using the produced RIBs as secondary beams in nuclear physics experiments by applying the tagging technique, i.e. the identification, event-by-event, in charge, mass and energy of each ion of the RIBs cocktail selected by the fragment separator, before it interacts with the secondary target, has been demonstrated. In 2010 an upgrade of the facility has been performed. Status and perspectives of the FRIBs@LNS facility are discussed
CONTROLLO GLICOMETABOLICO E ABITUDINI ALIMENTARI IN ADOLESCENTI CON DIABETE MELLITO TIPO 1
Background:
Gli studi che hanno valutato le abitudini alimentari dei bambini e adolescenti con diabete, hanno
riportato una percentuale di assunzione di carboidrati più bassa di quella minima raccomandata
spesso associata ad un maggiore consumo di grassi e ad una ridotta assunzione di fibre . Alcuni
studi che hanno valutato il rapporto tra composizione della dieta e controllo glicometabolico in
soggetti con diabete tipo 1, hanno evidenziato che una dieta ricca di grassi e povera di fibre è
associata ad un peggior controllo glicometabolico.
Obiettivo:
Valutare in adolescenti affetti da diabete mellito tipo 1, con diverso grado di controllo metabolico,
la frequenza di consumo settimanale dei vari gruppi di alimenti e l’eventuale correlazione di
questa con i valori di emoglobina glicosilata ( HbA1c).
Metodo:
In 43 soggetti (M/F :22/21; età 11-14 anni) suddivisi in due gruppi in rapporto al valore mediano
di HbA1c ( 8,45%), sono stati raccolti i dati relativi ai consumi alimentari degli ultimi tre mesi
attraverso un questionario di frequenza di consumo ed è stata considerata la frequenza di scelte
alimentari settimanali per gruppo di alimenti.
Risultati
I soggetti con miglior controllo glicometabolico (HbA1c< 8,45%) presentavano una maggiore
frequenza di consumo settimanale dei seguenti gruppi di alimenti: frutta( p<0,0001) , ortaggi
(p=0,017) e legumi ( p=0,03). I soggetti con peggior controllo glicometabolico ( HbA1c > 8,45%)
consumavano con maggiore frequenza alimenti appartenenti al gruppo di salumi (p=0,007),
formaggi (p=0,02) e dolci /bevande zuccherate (p=0,0065). I valori di HbA1c erano
inversamente correlati alla frequenza di consumo settimanale di frutta ((r – 0,65 p< 0,0001) e a
quello di ortaggi( r – 0,32 p < 0,017) e direttamente correlati alla frequenza settimanale di
consumo di alimenti appartenenti ai gruppi di salumi ( r 0,37 p< 0,007).
Conclusioni:
Il controllo glicometabolico in adolescenti con diabete tipo 1 è influenzato dalla frequenza di
consumo settimanale di alimenti ricchi di fibre e di grassi animali. I principi di una san
Eluding SUSY at every genus on stable closed string vacua
In closed string vacua, ergodicity of unipotent flows provide a key for
relating vacuum stability to the UV behavior of spectra and interactions.
Infrared finiteness at all genera in perturbation theory can be rephrased in
terms of cancelations involving only tree-level closed strings scattering
amplitudes. This provides quantitative results on the allowed deviations from
supersymmetry on perturbative stable vacua. From a mathematical perspective,
diagrammatic relations involving closed string amplitudes suggest a relevance
of unipotent flows dynamics for the Schottky problem and for the construction
of the superstring measure.Comment: v2, 17 pages, 8 figures, typos corrected, new figure added with 3
modular images of long horocycles,(obtained with Mathematica
Alpha-particle clustering in excited expanding self-conjugate nuclei
The fragmentation of quasi-projectiles from the nuclear reaction 40Ca + 12C
at 25 MeV/nucleon was used to produce alpha-emission sources. From a careful
selection of these sources provided by a complete detection and from
comparisons with models of sequential and simultaneous decays, strong
indications in favour of -particle clustering in excited 16O, 20Ne and
24}Mg are reported.Comment: 8 pages, 4 figures, 12th International Conference on Nucleus-Nucleus
collisions (NN2015), 21-26 June 2015, Catania, Ital
- …