Student Voice e didattica partecipativa: un valore aggiunto per l\u2019innovazione scolastica

Following Student Voice approach, a democratic participation is an essential point of a \u201cnew\u201d educational approach that requires a review of teaching methods, wich encourages cooperation and inclusion, listening to students\u2019 voice and students\u2019participation in the decision making processes involving their education. In this framework we carried out a participatory action research in an upper secondary school. Twenty of the third and fourth year students took part in the activity with the specific aim of proposing some elements to innovate the Pedagogy curriculum. The project allowed us to reach the established aims and to authorise students to experience new positioning in the school. In this article, we present and discuss students\u2019 suggestions to improve their participation in the realisation of the Pedagogy curriculum

An unpublished interview with Paulo Freire: radical pedagogy & social transformation

Pulling together the inedited works by Paulo Freire in the XXI century shows us how his works are up-to-date with current issues in the field. Most of his works have been disseminated all over the World, as those of the greatest educator of all times; however, his simplicity and outspoken voice is unique and cannot be reproduce in a simple manner. This is possibly why many writers use his citations, instead of paraphrasing his writings. Therefore, this paper represents another attempt to focus on his own voice and perspective on some of the questions raised by students three decades ago, that had never reach a broad audience but are nevertheless still in the minds of many students who are today interested in his work. The paper presents a short unpublished interview with Freire in 1988, when he talks about theoretical affiliation, critiques and the objectives of his works. In a conversation format the interview is a re-encounter between Paulo Freire and his former student Carmen de Mattos

Short communication: Genetic parameters for post-weaning visual scores and reproductive traits in Suffolk sheep

          The aim of this study was to estimate the coefficients of heritability and genetic correlations among visual scores (conformation, CPW; precocity, PPW; musculature, MPW) and reproductive traits: age at first lambing (AFL) and scrotal circumference (SC) evaluated at 180 days of age in Suffolk lambs. In the statistical model only the additive genetic effect was considered as random effect. The heritability estimates by univariate analyses for CPW, PPW, MPW, AFL and SC were 0.08, 0.12, 0.09, 0.20 and 0.22, respectively. The genetic correlations among AFL and CPW, PPW, MPW were -0.26, 0.19, and 0.08, respectively. The genetic correlation among SC and CPW, PPW, MPW were, respectively, 0.54, 0.88 and 0.86, and between AFL and SC was 0.26. The direct selection for conformation, precocity and musculature at 180 days of age and age at first lambing will provide slow genetic progress due to low heritability estimates. It is possible to obtain genetic gain in sexual precocity through selection on scrotal circumference in Suffolk rams. The favorable genetic correlation among visual scores and SC and between CPW and AFL, indicated the possibility to gain in genetic progress for reproductive traits through indirect selection of the visual scores in Suffolk sheep

A Holistic Review of a Galactic Interaction

Our situation as occupants of the Milky Way (MW) Galaxy, bombarded by the Sagittarius dwarf galaxy, provides an intimate view of physical processes that can lead to the dynamical heating of a galactic disc. While this evolution is instigated by Sagittarius, it is also driven by the intertwined influences of the dark matter halo and the disc itself. We analyse an N-body simulation following a Sagittarius-like galaxy interacting with a MW-like host to disentangle these different influences during the stages of a minor merger. The accelerations in the disc plane from each component are calculated for each snapshot in the simulation, and then decomposed into Fourier series on annuli. The analysis maps quantify and compare the scales of the individual contributions over space and through time: (i) accelerations due to the satellite are only important around disc passages; (ii) the influence around these passages is enhanced and extended by the distortion of the dark matter halo; (iii) the interaction drives disc asymmetries within and perpendicular to the plane and the self-gravity of these distortions increase in importance with time eventually leading to the formation of a bar. These results have interesting implications for identifying different influences within our own Galaxy. Currently, Sagittarius is close enough to a plane crossing to search for localized signatures of its effect at intermediate radii, the distortion of the MW's dark matter halo should leave its imprint in the outer disc and the disc's own self-consistent response is sculpting the intermediate and inner disc.Comment: 19 pages, 18 figures, published in the Monthly Notices of the Royal Astronomical Societ

First determination of the one-proton induced Non-Mesonic Weak Decay width of p-shell {\Lambda}-Hypernuclei

Previous studies of proton and neutron spectra from Non-Mesonic Weak Decay of eight Lambda-Hypernuclei (A = 5-16) have been revisited. New values of the ratio of the two-nucleon and the one-proton induced decay widths, Gamma_2N/Gamma_p, are obtained from single proton spectra, Gamma_2N/Gamma_p = 0.50 +/- 0.24, and from neutron and proton coincidence spectra, Gamma_2N/Gamma_p = 0.36 +/- 0.14stat +0.05sys -0.04sys , in full agreement with previously published ones. With these values, a method is developed to extract the one-proton induced decay width in units of the free Lambda decay width, Gamma_p/Gamma_Lambda, without resorting to Intra Nuclear Cascade models but by exploiting only experimental data, under the assumption of a linear dependence on A of the Final State Interaction contribution. This is the first systematic determination ever done and it agrees within the errors with recent theoretical calculations.Comment: 16 pages, 3 figures, 2 table

Production of Λ6^{6}_{\Lambda}H and Λ7^{7}_{\Lambda}H with the (Kstop−^{-}_{stop},π+\pi^+) reaction

The production of neutron rich $\Lambda$-hypernuclei via the ($K^-_stop$,$\pi^+$) reaction has been studied using data collected with the FINUDA spectrometer at the DA$\Phi$NE $\phi$-factory (LNF). The analysis of the inclusive $\pi^+$ momentum spectra is presented and an upper limit for the production of $^6_\Lambda$H and $^7_\Lambda$H from $^6$Li and $^7$Li, is assessed for the first time.Comment: 11 pages, 3 figures. Accepted for publication in PL

Σ−p\Sigma^- p emission rates in K−K^- absorptions at rest on 6^6Li, 7^7Li, 9^{9}Be, 13^{13}C and 16^{16}O

An experimental study of the $K^-_{stop}A\rightarrow \Sigma^- p A'$ reaction on $A=^6$Li, $^7$Li, $^9$Be, $^{13}$C and $^{16}$O $p$-shell nuclei is presented. The data were collected by the FINUDA spectrometer operating at the DA$\Phi$NE $\phi$-factory (LNF-INFN, Italy). Emission rates for the reaction in the mentioned nuclei are measured and compared with the few existing data. The spectra of several observables are discussed; indications of Quasi-Free absorptions by a $(np)$ pair embedded in the $A$ nucleus can be obtained from the study of the missing mass distributions.Comment: Version accepted by PR

Oltre l’era Covid-19: dall’emergenza alle prospettive di sviluppo professionale

The University was rapidly pushed into the era of distance teaching and learning (Dad) to cope with the imperative to ensure training for young people even in the lockdown period due to the Covid-19 pandemic. This necessity forced academics to a fast reconversion of traditional teaching into online learning environments for many still unknown and unusual. This has led to significant changes in the approaches and practices in use, favoring choices and solutions often not considered before. This research investigates the experience of distance teaching and learning (Dad), defining the concept, to investigate changes occurred in teaching practice, paying specific attention to the teaching mediation and to assessment, two areas considered foundational and emblematic in teaching-learning processes. 721 academics responded to an online questionnaire designed for this research; from the answers relevant changes in teaching and assessment methods emerged. Together with an increase of interest in the use of online practices, critical elements also emerged, such as the permanence of traditional models and innovation. Overall, the results seem to outline, although to different extents, the need to consider as central the professionalism of academics as a key factor to successfully reconvert the experience of Dad beyond the contingent moment.L’Università è entrata prepotentemente nell’era della didattica a distanza (DaD) per far fronte all’imperativo di garantire la formazione ai giovani anche nel periodo di lockdown imposto a seguito della pandemia del Covid-19. L’esperienza ha costretto la docenza ad una veloce riconversione della didattica tradizionale all’interno di modelli di azione on line per molti di loro sconosciuti e inusuali. Ciò ha determinato modificazioni significative negli approcci e nelle pratiche in uso, favorendo scelte e soluzioni spesso non considerate in precedenza. La ricerca indaga nello specifico l’esperienza della DaD, definendone il costrutto, per far emergere le modificazioni intervenute nella pratica didattica, ponendo un’attenzione particolare alla mediazione didattica e alla valutazione, due aree considerate fondative ed emblematiche nell’azione di insegnamento-apprendimento. Attraverso la somministrazione di un questionario on line a cui hanno risposto 721 docenti, si evidenziano le metamorfosi intervenute nell’azione di mediazione e di valutazione. Insieme ad un aumento di interesse verso l’utilizzo di pratiche on line compaiono elementi di criticità, connessi soprattutto al permanere di modelli tradizionali, e di innovazione, indotti dall’esigenza di offrire agli studenti un livello adeguato di qualità didattica per l’apprendimento. Nell’insieme gli esiti emersi sembrano profilare, sia pure con diverso grado di intensità, l’esigenza di considerare come centrale la professionalità del docente indicata quale fattore chiave per riconvertire positivamente l’esperienza della DaD oltre il portato contingente