628 research outputs found
Handwriting readiness e abilità motorie: quale contributo nell’apprendimento della scrittura
No full textLo studio ha come obiettivi: (a) analizzare le caratteristiche grafo-motorie di bambini con sviluppo tipico e con sospetto Disturbo di coordinazione motoria di età prescolare e di I classe primaria b) individuare la relazione tra abilità motorie, grafo-motorie e scrittura a mano in bambini di I e II classe primaria seguiti longitudinalmente. Hanno partecipato 50 bambini di 5 anni anni e 39 bambini di I e di II classe primaria. Sono state proposte: una prova di Handwriting Readiness, il questionario DCDQ (Caravale e Baldi, 2014), le prove di velocità di scrittura (BVSCO-2, Tressoldi, Cornoldi e Re) e la copia di una frase in corsivo (DGM-P) per i bambini di I classe. I dati sono stati analizzati attraverso una serie di analisi correlazionali (Pearson) e di analisi di regressione semplice. I risultati mostrano una relazione significativa tra abilità motorie e scrittura a mano, sia rispetto a criteri di leggibilità che di velocità di scrittura
Cyber resilience in organisations and supply chains: from perceptions to actions
No full textPurpose – This empirical study investigates the direct and indirect effects on managers’ perceptions of cyber risks, the implementation of cyber resilience strategies and the perceived effectiveness of these strategies for supply chains. Cyber risks pose significant threats to organisations and supply chains. Yet they remain insufficiently addressed and managed.
Design/methodology/approach – Primary data were collected from a sample of Italian organisations using a survey. The structural equation modelling methodology was employed to empirically investigate cyber resilience strategies in supply chains.
Findings – Results indicate that effective cyber resilience is linked to awareness of the negative impacts of cyber risks, particularly supply chain disruptions. This awareness leads to the adoption of various cyber resilience strategies. According to managers’ perceptions, several strategies are identified in the study as the most effective in enhancing the cyber resilience supply chains. The findings offer insights for managers regarding the relationship between cyber risk perceptions, supply chain cyber resilience strategies and their effectiveness. These relationships are studied using the theory of perceived risk and the dynamic capabilities theory.
Originality/value – This study advances knowledge for academics and practitioners in the fields of supply chain resilience and supply chain risk management. It contributes to the development of a risk-based thinking model in organisations and supply chains by drawing upon a dual theoretical perspective
B. Baldi, Pio 2. e le trasformazioni dell’Europa cristiana (1457–1464)
No full textRecensione del volume di Barbara Baldi, Pio 2. e le trasformazioni dell’Europa cristiana (1457–1464), Edizioni Unicopli, Milano 200
Il Carcer nella produzione di Cardano
No full textAlongside a larger analysis of Cardano's moral philosophy since the De consolatione (1542), the essay focuses on the dialogue Carcer, and suggests a relationship between the difficulties encountered by the author in the Duchy of Milan in 1560-61, and the trial of 1570 in Bologna. Special attention is devoted to the philosophical reasons that support in the Carcer the Plutarchean sera numinis vindicta, one of Cardano's favorites topics
Comparing three possible hypoelliptic Laplacians on the 5-dimensional Cartan group via div-curl type estimates
No full textOn general Carnot groups, the definition of a possible hypoelliptic Hodge-Laplacian on forms using
the Rumin complex has been considered in (M. Rumin, “Differential geometry on C-C spaces and application
to the Novikov-Shubin numbers of nilpotent Lie groups,” C. R. Acad. Sci., Paris Sér. I Math., vol. 329, no. 11, pp.
985–990, 1999, M. Rumin, “Sub-Riemannian limit of the differential form spectrum of contactmanifolds,” Geom.
Funct. Anal., vol. 10, no. 2, pp. 407–452, 2000), where the author introduced a 0-order pseudodifferential operator
on forms. However, for questions regarding regularity for example, where one needs sharp estimates, this
0-order operator is not suitable. Up to now, there have only been very few attempts to define hypoelliptic Hodge-
Laplacians on forms that would allow for such sharp estimates. Indeed, this question is rather difficult to address
in full generality, the main issue being that the Rumin exterior differential dc is not homogeneous on arbitrary
Carnot groups. In this note, we consider the specific example of the free Carnot group of step 3 with 2 generators,
and we introduce three possible definitions of hypoelliptic Hodge-Laplacians.We compare how these three possible
Laplacians can be used to obtain sharp div-curl type inequalities akin to those considered by Bourgain &
Brezis and Lanzani & Stein for the de Rham complex, or their subelliptic counterparts obtained by Baldi, Franchi
& Pansu for the Rumin complex on Heisenberg groups
La corrispondenza di Enea Silvio Piccolomini dal 1431 al 1454. La maturazione di un’esperienza fra politica e cultura
No full textLe lettere di Enea Silvio Piccolomini sono largamente note; allo stesso tempo, si riconosce senz’altro una sorta di “predilezione” da parte di Piccolomini per il genere epistolare. A questi richiami, tuttavia, ben raramente ha corrisposto un’attenzione diretta al carattere di questa fonte. Prendendo come punto di partenza l’edizione curata da R. Wolkan, il saggio cerca di offrire un primo riesame della corrispondenza del Piccolomini compresa fra il 1431 e il 1454, concentrando l’attenzione sui caratteri della sua produzione epistolare, sulla costruzione della rete dei corrispondenti, fino a considerare anche il rapporto fra le lettere familiari (le “Privatbriefe”) e le lettere pubbliche (gli “Amtliche Schreiben”). La scrittura epistolare del Piccolomini, da questo punto di vista, si rivela in particolare fortemente connessa alla maturazione della sua esperienza personale, in un rapporto assai stretto fra politica e cultura
Possession
No full textThis chapter of the Historical Latin Syntax traces the evolution and use of predicative possessive constructions from Archaic to Late Latin. We demonstrate that, far from being merely a so-called “be-language”, Latin is a language where the major possessive type is based on a transitive verb (habeo) since the archaic stage. A textual, contrastive analysis of the habeo x and mihi est x types proves that between these two constructions there is a functional differentiation (i.e. syntactic and pragmatic, while the semantic level is relevant only to a minor extent). This, thus, explains: their different occurrence in the Latin corpus; their division-of-labour and, therefore, their coexistence through the history of Latin; and, finally, the diahronic evolution towards the transitive type. A comparison between the mihi est x and the genitive predicative type, which are fully differentiated on a functional plane, completes the picture of the whole architecture of predicative possession in Latin. Consequences can be drawn on the general plane, as “mixted” types (i.e. languages that are both have- and be-), such as Latin, must be taken into consideration when we approach the typology of predicative possession.
An analysis of attributive constructions is then offered, at the light of parameters such as: the order of the elements in the sequence, the definite status of the possessor/possessum constituents of the phrase, the semantic profile of the relation expressed, and the different morphological markers, etc.. Conclusions partly confirm previous hypotheses about the relation between the Latin stage and the Indoeuropean stage, while several generalizations from the typological point of view have to be adjusted (e.g. external possessor constructions).
The part on predicative possession is mainly due to Andrea Nuti; the part on attributive possession mainly to Philip Baldi. However, as the whole chapter is the result of a deep, mutual work carried on in full cooperation, the authors have agreed not to state explicitly and neatly an author-to-pages correspondence
Daily motor characteristics in children with developmental coordination disorder and in children with specific learning disorder
No full textAn association between learning disorders and coordination problems has been reported in several studies over the last few decades. In this study, we have investigated daily motor characteristics in children with a diagnosis of specific learning disorder (SLD) and compared them with those of children with developmental coordination disorder (DCD) and those of typically developing controls. Ninety-six children aged 5 to 12 years were included: 29 with a diagnosis of SLD, 33 of DCD, and 34 controls. The Italian version of the Developmental Coordination Disorder Questionnaire 2007 (DCDQ-Italian) was used to measure children's coordination in everyday functional activities. The mean DCDQ-Italian total score was significantly lower in both SLD and DCD groups as compared with controls. Regarding subscores, both clinical groups scored significantly lower than controls on “Fine motor/handwriting” skills and on “General coordination.” The DCD group scored also significantly lower than controls on “Control during movement.” Moreover, clinical groups differed from each other, with SLD children scoring significantly higher on “Control during movement” and “General coordination” subscores. SLD children diverged from typically developing children in some motor skills during ordinary activities, and although this discrepancy was not as severe as in DCD children, it could have an impact on self-esteem and sport inclusion
Arsenate and arsenite removal from contaminated water by iron oxides nanoparticles formed inside a bacterial exopolysaccharide
No full textIn the last decades, the presence of high As levels in groundwaters poses a serious limitation to the use of this\ud
resources for drinking purposes in several parts of the world. Treatment of As-rich waters selected iron oxides\ud
filters as more effective, low cost and selective technology. Green and biologically-driven pathways to synthetize\ud
new nanostructured iron oxy-hydroxides are becoming always more attractive. We tested the suitability of\ud
FeOOH nanoparticles (9–15 nm) produced by Klebsiella oxytoca strain DSM 29614 and encapsulated in EPS gel\ud
structure to treat arsenic rich water. Different gel:water volume ratios were tested to treat 5000 μg As/L solution.\ud
20% FeEPS solution was able to remove 95% of As(V) while in 5% solution removal was reduced to 60%. Arsenic\ud
adsorption was very fast and follows pseudo-2nd order kinetic with maximum adsorption capacity reached at\ud
about 30 min. Adsorption followed Langmuir model for As(V) with qmax=31.8 mgAs/gFe and BET for As(III)\ud
with 8 mgAs/gFe for the first layer in 10% FeEPS solution. FeEPS dried into powder showed noticeable removal\ud
only after 2 h, hence not suitable for drinking water treatment. Treatment of natural As levels in mimicked\ud
groundwaters showed 87–95% As(V) and 45–61% As(III) removal after 5 min. FeEPS gel immobilized onto\ud
bivalve shell debris was used in packed-bed filters. It retained 49.8 mgAs/gFe from 150 μg/L As(V) spiked\ud
groundwater before reaching breakthrough at 8000 BVs. Biologically produced FeEPS gel showed good potentialities\ud
as eco-friendly material to remove As from contaminated groundwater
Il disturbo dello sviluppo della coordinazione
No full textIl disturbo dello sviluppo della coordinazione (DCD) è un disturbo del neurosviluppo che coinvolge le competenze motorie e prassiche e che comporta la difficoltà a svolgere alcune attività scolastiche e di vita quotidiana come scrivere, ritagliare, correre e fare sport. Il volume ne presenta le caratteristiche partendo dallo sviluppo motorio tipico e dalle sue basi neurofisiologiche, e descrive gli strumenti di valutazione maggiormente utilizzati e le proposte d’intervento secondo le recenti linee guida europee, fornendo così ai clinici suggerimenti sia per gli aspetti diagnostici sia per quelli riabilitativi. Vengono inoltre indicati alcuni strumenti di osservazione per gli insegnanti e la normativa di riferimento in merito ai bisogni educativi speciali (BES)
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