51 research outputs found
Finding critical points using improved scaling Ansaetze
Analyzing in detail the first corrections to the scaling hypothesis, we
develop accelerated methods for the determination of critical points from
finite size data. The output of these procedures are sequences of
pseudo-critical points which rapidly converge towards the true critical points.
In fact more rapidly than previously existing methods like the Phenomenological
Renormalization Group approach. Our methods are valid in any spatial
dimensionality and both for quantum or classical statistical systems. Having at
disposal fast converging sequences, allows to draw conclusions on the basis of
shorter system sizes, and can be extremely important in particularly hard cases
like two-dimensional quantum systems with frustrations or when the sign problem
occurs. We test the effectiveness of our methods both analytically on the basis
of the one-dimensional XY model, and numerically at phase transitions occurring
in non integrable spin models. In particular, we show how a new Homogeneity
Condition Method is able to locate the onset of the
Berezinskii-Kosterlitz-Thouless transition making only use of ground-state
quantities on relatively small systems.Comment: 16 pages, 4 figures. New version including more general Ansaetze
basically applicable to all case
DIGITARCH
I progetti cluster, iniziative finanziate da Sardegna Ricerche, sono attività collaborative tra organismi di ricerca pubblici regionali e imprese del territorio che mirano a favorire l’innovazione attraverso il trasferimento tecnologico.
L'obiettivo principale del progetto DIGITARCH è favorire, attraverso la collaborazione con le imprese, lo sviluppo di iniziative di innovazione e trasferimento tecnologico attraverso la sperimentazione di sistemi per la rappresentazione digitale di ambienti interni. Grazie a questo ci si propone di sviluppare servizi per i settori dell'ingegneria, dell'architettura, dei beni culturali e dei settori a questi collegati.Finanziamenti::POR FESR Sardegna 2014-2020::Azione 1.1.
AI-Textiles
I progetti cluster, iniziative finanziate da Sardegna Ricerche, sono attività collaborative tra organismi di ricerca pubblici regionali e imprese del territorio che mirano a favorire l’innovazione attraverso il trasferimento tecnologico.
L'obiettivo del progetto AI-Textiles è quello di porre le basi affinché le aziende aderenti al cluster possano sviluppare competenze specifiche e avanzate nell'ambito dei tessuti intelligenti e delle tecnologie legate all'intelligenza artificiali, a partire dalle quali possano svilupparsi idee, soluzioni, e prodotti innovativi in risposta alle crescenti richieste del mercato.Finanziamenti::POR FESR Sardegna 2014-2020::Azione 1.1.
Clinical features and outcomes of elderly hospitalised patients with chronic obstructive pulmonary disease, heart failure or both
Background and objective: Chronic obstructive pulmonary disease (COPD) and heart failure (HF) mutually increase the risk of being present in the same patient, especially if older. Whether or not this coexistence may be associated with a worse prognosis is debated. Therefore, employing data derived from the REPOSI register, we evaluated the clinical features and outcomes in a population of elderly patients admitted to internal medicine wards and having COPD, HF or COPD + HF. Methods: We measured socio-demographic and anthropometric characteristics, severity and prevalence of comorbidities, clinical and laboratory features during hospitalization, mood disorders, functional independence, drug prescriptions and discharge destination. The primary study outcome was the risk of death. Results: We considered 2,343 elderly hospitalized patients (median age 81 years), of whom 1,154 (49%) had COPD, 813 (35%) HF, and 376 (16%) COPD + HF. Patients with COPD + HF had different characteristics than those with COPD or HF, such as a higher prevalence of previous hospitalizations, comorbidities (especially chronic kidney disease), higher respiratory rate at admission and number of prescribed drugs. Patients with COPD + HF (hazard ratio HR 1.74, 95% confidence intervals CI 1.16-2.61) and patients with dementia (HR 1.75, 95% CI 1.06-2.90) had a higher risk of death at one year. The Kaplan-Meier curves showed a higher mortality risk in the group of patients with COPD + HF for all causes (p = 0.010), respiratory causes (p = 0.006), cardiovascular causes (p = 0.046) and respiratory plus cardiovascular causes (p = 0.009). Conclusion: In this real-life cohort of hospitalized elderly patients, the coexistence of COPD and HF significantly worsened prognosis at one year. This finding may help to better define the care needs of this population
Perspectives in hadronic physics. Proceedings, 6th International Conference, Hadron 08, Trieste, Italy, May 12-16, 2008.
La SocietĂ degli Alti Forni, Fonderie ed Acciaierie di Terni ed i suoi stabilimenti : monografia
Na contrap.: Il Consiglio d'Administrazione della Società degli Alti Forni... al suo presidente Comm. Ing. V. S. Breda, Senatore del Regno. Inclúe retrato do sobreditorialTexto a dúas colPort. a dúas tintasAs XVII lám. algunhas son enfrontadas, outras preg., algunhas a cor...As fot. son todas sobre os altos fornos de Tern
in. Bellatalla l., Marescotti E., Russo P. (a cura di), L'ossimoro intrigante. Studi d Pedagogia degli adulti,
Cave d'argilla: coltivazione, recupero ambientale, sicurezza
Biblioteca Centrale CNR / CNR - Consiglio Nazionale delle RichercheSIGLEFirst edition 1996; reprinted February 1997ITItal
L'interno nei segni della storia. Obiettivi e risultati del corso di architettura degli interni. Anno acc. 1995-96
Consiglio Nazionale delle Ricerche - Biblioteca Centrale - P.le Aldo Moro, 7, Rome / CNR - Consiglio Nazionale delle RichercheSIGLEITItal
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