Search results for "Statistica"

Socioeconomic determinants of persistence in poor subjective health

2012

This paper aims at contributing to the constantly growing literature on the dynamics of (self assessed) health. Using the eight waves of the Health and Retirement Study, targeting elderly Americans over the age of 50, we measure persistence in bad health using an index borrowed from the literature on persistent poverty. This new approach, which is totally non parametric in the way it defines the relationship (for each individual and along the time) among years of poor and not poor health, allows to catch some interesting links between the subjective health and several factors such as education, life styles and socioeconomic status that may have a long-lasting influence on an individual’s he…

Kohn-Sham Decomposition in Real-Time Time-Dependent Density-Functional Theory An Efficient Tool for Analyzing Plasmonic Excitations

2017

The real-time-propagation formulation of time-dependent density-functional theory (RT-TDDFT) is an efficient method for modeling the optical response of molecules and nanoparticles. Compared to the widely adopted linear-response TDDFT approaches based on, e.g., the Casida equations, RT-TDDFT appears, however, lacking efficient analysis methods. This applies in particular to a decomposition of the response in the basis of the underlying single-electron states. In this work, we overcome this limitation by developing an analysis method for obtaining the Kohn-Sham electron-hole decomposition in RT-TDDFT. We demonstrate the equivalence between the developed method and the Casida approach by a be…

Mixed estimation technique in semi-parametric space-time point processes for earthquake description

2013

An estimation approach for the semi-parametric intensity function of a particular space-time point process is introduced. In particular we want to account for the estimation of parametric and nonparametric components simultaneously, applying a forward predictive likelihood to semi-parametric models. For each event, the probability of being a background event or one belonging to a seismic sequence is therefore estimated.

Local indicators of spatio-temporal association on linear networks

In this work, we extend the Local Indicators of Spatio-Temporal Association (LISTA) functions (Siino et al. 2018) to the non-Euclidean space of linear networks. We introduce the local version of some inhomogeneous second-order statistics for spatio-temporal point processes on linear networks (Morandi and Mateu, 2019), namely the K-function and the pair correlation function. Following the work of Adelfio et al. (2019) for the Euclidean case, we employ the proposed LISTA functions to assess the goodness-of-fit of different spatio-temporal models fitted to point patterns occurring on linear networks. Indeed, the peculiar lack of homogeneity in a network discourages the usage of traditional spa…

Ecocompositi MaterBi (R)/Farina di legno: ottimizzazione delle proprietà attraverso analisi statistica

2009

Sulla valutazione di efficacia di un progetto per la partecipazione giovanile nel Comune di Centuripe.

2001

Politiche regionali per lo sviluppo del Mezzogiorno.

2008

Il persistente dualismo territoriale tra le regioni più ricche del Nord e quelle meno ricche del Sud d’Italia ha ricevuto innumerevoli quante inefficaci ricette. L’azione politica ha messo in campo, a partire dal secondo dopoguerra, strumenti agenti sia dal lato dell’offerta che da quello della domanda ma incapaci di avvicinare tra loro, cioè far con- vergere, le regioni italiane. Eccezione fatta per alcuni brevi intervalli, la rincorsa del Mezzogiorno non è mai stata tale da raggiungere né la prosperosa area industiale del Nord–Ovest né quella artigiana del Nord–Est. Nonostante le strategie di sviluppo territoriale elaborate e messe in atto negli ultimi cinquanta anni, l’Italia resta oggi …

Hospitalization and mortality among the elderly exposed to polytherapy and at risk of adverse drug reactions

2017

The increase in comorbidities due to an aging population determines a marked increase in the use of drugs (polypharmacy), which in turn carries a high risk of drug-drug interactions. This Paper will analyze the relationship between exposure to adverse drug interactions, and hospitalization and mortality in a cohort of elderly patients, living in a local Health Unit in Palermo, Italy. These patients were exposed to drugs whose concurrent use is contraindicated during the period 1.1.2014 - 30.12.2014. After a description of the most common drugs involved in adverse reactions, an evaluation of the extent of hospitalization and mortality will be performed. The results will demonstrate that ther…

Acoustic, neural, and perceptual correlates of polyphonic timbre

2012

The pentafluorophenyl group as π-acceptor for anions: a case study

2015

Chemical science 6(1), 354-359 (2015). doi:10.1039/C4SC02762K