1,721,136 research outputs found
Il laboratorio come contesto del Fare matematica nella scuola di base e nella scuola superiore
No full textINDECISIONE E CREDENZE DI EFFICACIA: UNA RICERCA LONGITUDINALE
No full textFra i fattori che possono influenzare le scelte circa il futuro vi sono i livelli di
decisionalità sperimentati e le credenze di efficacia nei confronti dei propri processi di
scelta. Se gli studi di tipo trasversale che si sono occupati di queste dimensioni sono
numerosi, poche sono invece le ricerche che si sono occupate di analizzarne lo sviluppo
nel tempo secondo un’ottica longitudinale. Con questo lavoro si è voluto così coinvolgere
un gruppo di adolescenti in una ricerca longitudinale al fine di verificare se, a distanza di
un anno, i livelli di decisionalità e di credenze di efficacia percepite variavano. I dati raccolti
hanno permesso di constatare che per quanto riguarda la decisionalità non emergono
differenze significative; si sono osservati incrementi per quanto riguarda l’autoefficacia nei
confronti della capacità di autocontrollo e di gestire situazioni difficili; non si sono
riscontrate differenze per quanto riguarda le credenze di efficacia nei confronti della
propria capacità di prendere decisioni e di portare a termine compiti lunghi ed impegnativi
A population balance model to investigate the effect of microgravity on the kinetics of in vitro cell proliferation
No full textIn this work a mathematical model helpful to investigate the effects of microgravity on the kinetics of in vitro proliferation of adherent cells is proposed. The model is based on a Population Balance (PB) approach that allows to describe cell cycle progression through the different phases experienced by any cell of the entire population during its own life. Specifically, the proposed model has been developed as a multi-staged 2-D PB, by considering a different sub-population of cells for any single phase of the cell cycle. These sub-populations composing the entire population of cells of the cultivation system are discriminated through cellular volume and DNA content, that both increase during the mitotic cycle. A series of numerical simulations related to the in vitro proliferation kinetics of adherent cells is here reported for illustrating model capabilities. It is found that, the change of one adjustable parameter related to cell volume growth rate in response to a change of gravity is able to mimic cell culture behaviour under microgravity conditions, as reported in the technical literature
La valutazione dello stress lavorativo in ambito universitario: analisi descrittiva delle dimensioni psicologiche e delle dimensioni organizzative.
No full textPsycho-social development of deaf children with ID
No full textAim: To investigate the psychosocial development of deaf children with ID
who attend an integrated (deaf and hearing students) and bilingual (Italian and
Italian Sign Language) school. The aim was to identify the resources in the family
and scholastic contexts and structure interventions to promote adaptive skills.
Method: The sample comprised 34 hearing, 11 deaf and 4 deaf with ID students,
from 1st to 5th grade. Parents and teachers were involved in the research.
We investigated: children’s adaptive behaviour (ABAS II), parental stress (PSI)
and children’s behaviour in class (videotaped observation). Results: Parents
and teachers representation of children’s development focuses on different
aspects. Parents of deaf children with ID had higher PSI scores. Class observations
showed a higher prevalence of oppositional behaviour in deaf children
with ID. Moreover, they used sign language as a preferred communication
method with peers and teachers. Conclusion: Teachers’ and parents’ collective
knowledge promotes a better understanding of children’s adaptive competence.
When a high level of stress is observed, parenting support programmes are
implemented to improve the parent-child relationship. An integrated and bilingual
context facilitates the psychosocial development of deaf children with I
Developmental G6PD polymorphism in Drosophila melanogaster: evidence for non structural variants. Experientia 35, 1441-1442
No full text
Flessibilità e produttività: il caso del lavoro in somministrazione. ASTRIL working paper 4/2012, Università Roma Tre
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