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Building numeracy from the earliest years of life. Evidence and experiences. Costruire la numeracy fin dai primi anni di vita. Evidenze ed esperienze.
No full textAbstract: Several research summaries indicate that the early years of life are a crucial period for
building children's numeracy and providing them with conceptual tools that can promote future
academic success in mathematics and related disciplines. Important factors appear to be the activities
offered and the type of interaction established with adults, both educators and parents. Starting from
a review of the existing literature, this contribution proposes activities and mediation pathways useful
for understanding, interpreting, using, and communicating mathematical information, based on games
and protocols specifically designed to connect basic mathematical concepts with everyday situations.
The activities and protocols are inspired both by the experiences of Carl Haywood's Bright Start
method and its developments, and by approaches that combine the enactive (direct experience,
manipulation, concrete perception of objects), iconic (representation of concepts through images),
and symbolic (use of language, natural and mathematical) aspects of numeracy.
Numerose sintesi di ricerca indicano i primi anni di vita come un periodo cruciale per
costruire la numeracy dei bambini e fornire strumenti concettuali in grado di favorire il successo
scolastico futuro in matematica e nelle discipline correlate. Fattori importanti sembrano essere le
attività proposte e il tipo di interazione che si instaura con l’adulto, inteso sia come educatore sia
come genitore. Partendo dalla revisione della letteratura esistente, il contributo propone attività e
percorsi di mediazione utili per comprendere, interpretare, utilizzare e comunicare informazioni
matematiche partendo da giochi e protocolli appositamente progettati per connettere concetti
matematici di base con situazioni di vita quotidiana. Attività e protocolli si ispirano sia alle esperienze
del metodo Bright Start di Carl Haywood e alle sue evoluzioni sia agli approcci che coniugano gli
aspetti enattivi (esperienza diretta, manipolazione, percezione concreta degli oggetti), iconici
(rappresentazioni di concetti attraverso immagini) e simbolici (uso del linguaggio, naturale e
matematico) della numeracy
Antagonist Static Stretching Between Sets Improves Leg Press Repetition Performance in Adolescent Female Volleyball Players: A Randomized Crossover Within-Subject Design
No full textThis study aimed to investigate the effect of antagonist static stretching applied between
sets during resistance training on the number of repetitions of leg press exercise in young
volleyball players. For this purpose, a total of 16 female active volleyball players (age
15.50 ± 0.52 years; height 167.25 ± 6.10; body mass 57.00 ± 5.98) participated voluntarily.
The athletes participating in the study visited the laboratory five times. In the first session,
anthropometric measurements were taken. In the second session, their 10 repetition
maximums (RTs) were recorded, and in the third session, 10 control RTs were recorded.
In the other two sessions, athletes were randomly assigned to two experimental protocol
treatments in accordance with the crossover experimental design. In the traditional application,
leg press exercise was performed as four sets with their own maximums and
2 min of passive rest between sets. In the experimental application, the participants performed
four sets of leg press exercise with ten repetitions of their own maximums until
concentric exhaustion, and static hamstring stretching was applied continuously for 30 s
over 2 min between sets. All participants participated in both application protocols in
different sessions. SPSS 20.0 package programed and GraphPad Prizm 8 graphics program
were used for the analysis of all data. Data were analyzed at 0.05 significance level. In the
findings obtained, Group* application interaction was found to be statistically significant
according to the application and groups (F = 4.198, p = 0.016, p
2 = 0.219). In the leg
press repetitions, statistical significance was found in favor of the experimental treatment
in the third and fourth sets. This study shows that antagonist static stretching applied
between sets positively affects resistance training performance by increasing the number of
repetitions in leg press exercise in young female volleyball players
THE EU CORPORATE SUSTAINABILITY DUE DILIGENCE DIRECTIVE (CSDDD) – THROUGH ENERGY JUSTICE PRINCIPLES
No full textECC/FRCM-Confinement of Concrete Columns: Understanding the Symbiosis Interaction Between Fabric and Matrix
No full textEngineered Cementitious Composite (ECC) and Fabric Reinforced Cementitious Matrix/Mortar (FRCM) systems have emerged as a promising solution for the structural strengthening and/or seismic retrofitting of Reinforced Concrete (RC) columns offering greater compatibility with concrete and improved fire resistance compared to epoxy-based composites like Fiber Reinforced Polymers (FRPs). The efficacy of these systems is fundamentally linked to the synergistic interaction between the fabric reinforcement and the cementitious matrix, which plays a critical role in ensuring effective confinement and overall mechanical performance. This study delves into the impact of various ECC/FRCM systems on the behavior of confined concrete columns subjected to pure compression, with a particular emphasis into the fabric-to-matrix symbiosis. At this scope, an extensive experimental program was carried out, involving different types of fabric (i.e. Carbon, Glass and PBO) and matrix compositions to evaluate their influence on compressive strength, ductility, and failure mechanisms of RC columns. Furthermore, additional tests were conducted without the fabric component to isolate and quantify the matrix’s standalone contribution to the confinement system’s overall effectiveness. The results highlighted significant performance variations stemming from the compatibility and congruency between the deformability characteristics of the fabric and matrix. These findings underscore the importance of precise material selection and optimization to fully harness the structural benefits of ECC/FRCM systems, paving the way for their advanced application in RC column strengthening
La dimensione locale del salario minimo legale: il caso degli appalti pubblici
No full textIl contributo si fa carico di sviluppare alcune considerazioni critiche sull’iniziativa degli enti locali di fissare un salario minimo legale nell’ambito degli appalti pubblici. La prospettiva di analisi è volta a verificare se tali interventi siano coerenti con i vincoli giuridici imposti dall’ordinamento multilivello. Lo studio si integra ed entra in dialogo con la riflessione dottrinale in materia partendo da un’analisi degli atti amministrativi che hanno vincolato l’aggiudicazione dell’appalto al rispetto della tariffa oraria minima pari a 9 euro l’ora, collegando le dinamiche osservate ad un’analisi del quadro normativo e giurisprudenziale di riferimento. L’esito dello studio è duplice: da un lato, emergono dei profili di illegittimità di tali interventi; dall’altro, invece, si evidenziano gli spazi d’intervento che gli enti locali potrebbero sfruttare per fare degli appalti pubblici un uso strategico allo scopo di migliorare le tutele dei lavoratori e delle lavoratrici. L’analisi si propone principalmente di dialogare criticamente con la dottrina che ha sostenuto la legittimità dell’intervento degli enti locali in materia salariale. Nel compiere lo sforzo di verificare i profili di legittimità dell’intervento degli enti locali in materia salariale in una prospettiva multilivello, lo studio, nella parte conclusiva, prospetta quali siano i possibili spazi d’intervento degli enti locali (e i relativi strumenti) per poter favorire il miglioramento delle condizioni di lavoro nell’ambito degli appalti pubblici
Copper Dysregulation in Major Depression: A Systematic Review and Meta-Analytic Evidence for a Putative Trait Marker
No full text
Sull’epistolario di Francesco Filelfo nel Settecento, tra Lorenzo Mehus e Alessandro Trivulzio
No full textL’articolo prende in esame la vicenda settecentesca del manoscritto 873 della Biblioteca Trivulziana di Milano, che costituisce l’unico testimone dell’intero corpus epistolare in quarantotto libri dell’umanista Francesco Filelfo. L’indagine si concentra in particolare sull’acquisizione e sull’impiego del codice da parte di Alessandro Trivulzio, il quale si avvalse, nello studio dell’opera, della consulenza dell’erudito toscano Lorenzo Mehus. Viene quindi ricostruito il fitto dialogo epistolare intercorso tra i due studiosi, reso possibile dalla riscoperta di cinquantacinque lettere inviate dall’abate Mehus a Trivulzio, oggi conservate presso la Biblioteca privata della famiglia Trivulzio a Milano, nell’Archivio Trivulzio, Materiale notificato, con segnatura Triv. 2086