Search results for "TIME"
showing 10 items of 12336 documents
Transformation of proliferative verrucous leukoplakia to oral carcinoma: a ten years follow-up
2004
Los autores presentan un caso de leucoplasia verrugosa proliferativa (LVP) en varón de 78 años de edad. Fue inicialmente presentado como un caso de leucoplasia en lengua pero un estudio microscópico en 1991 reveló la presencia de displasia epitelial leve. Tras 5 años de seguimiento, la lesión sufrió cambios de tamaño y localización y tuvo comportamiento recidivante. En 1996, un área eritematosa granular e indurada que apareció en lengua resultó ser un carcinoma de células escamosas microinvasivo cuando se estudió microscópicamente. Tras una revisión del comportamiento clinicopatológico de esta entidad, los autores concluyeron que se trataba de una leucoplasia verrugosa proliferativa, cuyo d…
Real-space quantum transport in two-dimensional nanostructures in magnetic fields
2013
Stagionalità e regime delle piene in Sicilia
2008
The Physical Activity and Nutritional INfluences in Ageing (PANINI) Toolkit: a standardized approach towards physical activity and nutritional assess…
2022
Assessing multiple domains of health in older adults requires multidimensional and large datasets. Consensus on definitions, measurement protocols and outcome measures is a prerequisite. The Physical Activity and Nutritional INfluences In Ageing (PANINI) Toolkit aims to provide a standardized toolkit of best-practice measures for assessing health domains of older adults with an emphasis on nutrition and physical activity. The toolkit was drafted by consensus of multidisciplinary and pan-European experts on ageing to standardize research initiatives in diverse populations within the PANINI consortium. Domains within the PANINI Toolkit include socio-demographics, general health, nutrition, ph…
Pseudospectrum of Reissner-Nordström black holes: Quasinormal mode instability and universality
2021
Black hole spectroscopy is a powerful tool to probe the Kerr nature of astrophysical compact objects and their environment. The observation of multiple ringdown modes in gravitational waveforms could soon lead to high-precision gravitational spectroscopy, so it is critical to understand if the quasinormal mode spectrum is stable against perturbations. It was recently shown that the pseudospectrum can shed light on the spectral stability of black hole quasinormal modes. We study the pseudospectrum of Reissner-Nordstr\"om spacetimes and we find a spectral instability of scalar and gravitoelectric quasinormal modes in subextremal and extremal black holes, extending similar findings for the Sch…
Leveraging Users' Likes in a Video Streaming P2P Platform
2014
This paper investigates how a p2p television platform can take advantage of the presence of frequent channel viewers to grant them a more satisfying service than to less regular spectators. The idea we explore is to learn beforehand about the users' interests, in order to cluster them in groups that display different behaviors; then, the neighborhood creation strategy and video chunk scheduling algorithm of the overlay is altered, with the aim of serving frequent spectators in a privileged manner, providing them with a faster access to the selected channel without overly penalizing less habitual customers. An analytical model is developed, to capture the difference in startup delay that the…
Instrumenttivalintojen stereotypioista
2017
Tutkin instrumenttivalintoja, siihen liittyviä stereotypioita ja sitä, kuinka niihin voi tulevana musiikinopettajana vaikuttaa. Instrumenttivalintoihin vaikuttaa moni asia ja siihen liittyvät stereotypiat ovat siitä tärkeä osa. Perehdyin ensin aiempiin tutkimuksiin aiheesta. Ensimmäiseksi käsittelen sukupuolistereotypioita, instrumenttien sukupuolittuneisuutta ja soittajan persoonan vaikutusta instrumenttivalintoihin. Sen jälkeen kerron myös muista instrumenttivalintoihin liittyvistä tekijöistä. Kolmanneksi käsittelen myös musiikin harrastuneisuuteen liittyviä tilastoja Suomesta ja Britanniasta. Tämän jälkeen analysoin omaa aineistoani, jonka keräsin keväällä 2016 Jyväskylän ammattiopistoll…
Inferring directionality of coupled dynamical systems using Gaussian process priors: Application on neurovascular systems
2022
Dynamical system theory has recently shown promise for uncovering causality and directionality in complex systems, particularly using the method of convergent cross mapping (CCM). In spite of its success in the literature, the presence of process noise raises concern about CCM's ability to uncover coupling direction. Furthermore, CCM's capacity to detect indirect causal links may be challenged in simulated unidrectionally coupled Rossler-Lorenz systems. To overcome these limitations, we propose a method that places a Gaussian process prior on a cross mapping function (named GP-CCM) to impose constraints on local state space neighborhood comparisons. Bayesian posterior likelihood and…
Una stima dell’occupazione straniera per regione
2010
Foreigners are a very important resource for Italy not only for the evolution of the Italian society (through for example the contribution they provide to the natural balance, with a fertility rate about twice that of Italian) but also for their important role in our labor market (see Istat, 2009). But when we want to measure the dimension of phenomenon and, through it, to determine significance levels of foreign presence in the territory, there is enormous difficulties in the collection of information. In this job to solve this problem we consider small area estimation methods. We use the continuous labor force survey conducted by ISTAT for the year 2008. Then to choose the best model we c…
A regional GIS-based model for reconstructing natural monthly streamflow series at ungauged sites
2016
Several hydrologic applications require reliable estimates of monthly runoff in river basins to face the widespread lack of data, both in time and in space. The main aim of this work is to propose a regional model for the estimation of monthly natural runoff series at ungauged sites, analyzing its applicability, reliability and limitations. A GIS (Geographic Information System) based model is here developed and applied to the entire region of Sicily (Italy). The core of this tool is a regional model for the estimation of monthly natural runoff series, based on a simple modelling structure, consisting of a regression based rainfall-runoff model with only four parameters. The monthly runoff i…