Search results for "Dance"
showing 10 items of 2075 documents
The Gaia-ESO Survey: impact of extra mixing on C and N abundances of giant stars
2018
The GES survey using FLAMES at the VLT has obtained high-resolution UVES spectra for a large number of giant stars, allowing a determination of the abundances of the key chemical elements C and N at their surface. The surface abundances of these chemical species are well-known to change in stars during their evolution on the red giant branch after the first dredge-up episod, as a result of extra-mixing phenomena. We investigate the effects of thermohaline mixing on C and N abundances using the first comparison between the GES [C/N] determinations with simulations of the observed fields using a model of stellar population synthesis. We explore the effects of thermohaline mixing on the chemic…
X-ray emission from the old CTTS MP Muscae
2007
We study the properties of X-ray emitting plasma of MP Mus, an old classical T Tauri star. XMM-Newton/RGS spectra allow us to measure the plasma electron density, which probes whether X-ray emission is produced in the accretion process. X-ray emission from MP Mus originates from high density cool plasma but a hot flaring component is also present, suggesting that both coronal magnetic activity and accretion contribute to the observed X-ray emission. From the soft part of the X-ray emission from MP Mus, mostly produced by plasma heated in the accretion shock, we derive the accretion parameters and the characteristics of the shock-heated plasma.
X-ray emission from an adolescent classical T Tauri star
2007
La progettazione del sé professionale alla fine dell’adolescenza
2020
Si è conclusa il 15 maggio 2019 la prima parte di una ricerca- intervento ispirata alla teoria del pensiero narrativo, ai principi dell’educational counseling e della didattica orientativa. Duran- te l’anno scolastico 2018-2019, 93 studenti (50 femmine e 43 maschi) del quarto anno di cinque licei di Palermo hanno partecipato a un’iniziativa sperimentale in cui scuola e università hanno collaborato con un duplice scopo: ridurre negli studenti il gap rilevato tra le conoscenze in uscita dal liceo e quelle richieste all’inizio dei corsi universitari e potenziare in loro la capacità di formulare il proprio progetto di vita professionale. È stata sperimentata l’azione congiunta di tre tipi di in…
Examining the longitudinal relationship between visibility and persistence on stress and technology-assisted supplemental work
2023
This study examines the longitudinal relationship between two affordances of organizational information and communication technologies (ICTs)—that is, visibility and persistence—and individuals’ subjective stress and technology-assisted supplemental work (TASW). We propose that visibility and persistence associated with organizational ICTs are often more aptly construed as probabilities for action, rather than merely possibilities for action. The hypotheses are tested using latent change structural equation modeling drawing on two-wave survey data from 437 employees of a global industrial logistics company headquartered in a Nordic country. The findings highlight that visibility is associat…
Towards a Guidance System to Aid in the Dosimetry Calculation of Intraoperative Electron Radiation Therapy
2015
In Intraoperative Electron Radiation Therapy (IOERT), the lack of specific planning tools limits its applicability, the need for accurate dosimetry estimation and application during the therapy being the most critical. Recently, some works have been presented that try to overcome some of the limitations for establishing planning tools, though still an accurate guidance system that tracks, in real-time, the applicator and the patient is needed. In these surgical environments, the acquisition of an accurate 3D shape of the patient’s tumor bed in real-time is of high interest, as current systems make use of a 3D model acquired before the treatment. In this paper, an optical-based system is pre…
Attività di orientamento all’Università: l’impatto delle buone pratiche
2023
The research was carried out as part of a vast project to combat failure in university studies, the provision of guidance and mentoring for students entering the university for the first time, with a view to improving the services offered. First, it was meant to verify the content validity of a self-assessment questionnaire of one's own study habits (ASU 2021) built and validated more than twenty years ago. The questionnaire invites the student to answer not about what he feels he should do, but about what he actually does. Depending on the study difficulties highlighted by the test, laboratory meetings were arranged to plan orientation activities for students of the last two years of secon…
Orientare nella scuola alla scelta formativo-professionale post-diploma con la metodologia «SeCo»
2017
È stata effettuata un’indagine pilota ispirata alla teoria di Pennebaker e ai principi della scuola rogersiana di counseling. 88 studenti del quinto anno di un liceo di Enna hanno partecipato, tra il mese di novembre 2015 e il mese di maggio 2016, a un progetto di orientamento che ha previsto la sperimentazione della metodologia educativa «SeCo» (Scrittura espressiva e Colloquio di orientamento) per la costruzione del loro progetto di vita professionale. L’applicazione di questa metodologia ha implicato lo svolgimento di due attività formative: tre sessioni di scrittura espressivo-prospettica e tre colloqui individuali di orientamento. Si è voluto verificare se la partecipazione a queste at…
Parasite avoidance behaviours in aquatic environments
2018
Parasites, including macroparasites, protists, fungi, bacteria and viruses, can impose a heavy burden upon host animals. However, hosts are not without defences. One aspect of host defence, behavioural avoidance, has been studied in the terrestrial realm for over 50 years, but was first reported from the aquatic environment approximately 20 years ago. Evidence has mounted on the importance of parasite avoidance behaviours and it is increasingly apparent that there are core similarities in the function and benefit of this defence mechanism between terrestrial and aquatic systems. However, there are also stark differences driven by the unique biotic and abiotic characteristics of terrestrial …
Suoliston mikrobit ja fyysinen suorituskyky
2021
Suolistoamme asuttava miljardilukuinen mikrobiyhteisö osallistuu fysiologiaamme monin tavoin. Se kykenee esimerkiksi hajottamaan ravinnosta yhdisteitä, joihin omat entsyymimme eivät pure. Poikittaistutkimuksissa on löydetty ihmisen fyysisen suorituskyvyn ja suolistomikrobien välisiä yhteyksiä. Liikunta-aktiivisuus näyttäisi lisäävän tiettyjen terveysvaikutteisten suolistomikrobien määrää. Pitkittäistutkimuksista tekemämme systemoitu katsaus osoittaa, että liikunta vaikuttaa ihmisten suolistomikrobeihin, mutta tulokset ovat ristiriitaisia. Yleisimmin keskikuormittava kestävyysliikunta on aiheuttanut eniten muutoksia suolistossa, mutta tähänastinen tutkimus on painottunut iäkkäisiin, ylipaino…