Search results for "Process"
showing 10 items of 22310 documents
Event-related potentials to task-irrelevant changes in facial expressions
2009
Abstract Background Numerous previous experiments have used oddball paradigm to study change detection. This paradigm is applied here to study change detection of facial expressions in a context which demands abstraction of the emotional expression-related facial features among other changing facial features. Methods Event-related potentials (ERPs) were recorded in adult humans engaged in a demanding auditory task. In an oddball paradigm, repeated pictures of faces with a neutral expression ('standard', p = .9) were rarely replaced by pictures with a fearful ('fearful deviant', p = .05) or happy ('happy deviant', p = .05) expression. Importantly, facial identities changed from picture to pi…
Issues in Visual Science
2004
Sélection de bandes pour la visualisation d'images spectrales : une approche basée sur l'étude de saillance
2011
National audience; De nos jours, la plupart des technologies d'affichage numériques sont basées sur le paradigme qu'une combinaison de trois couleurs primaires spécifiques est suffisante pour la reproduction d'une couleur quelconque pour l'oeil humain. Par ailleurs, les dispositifs d'affichage multispectraux ne sont pas encore monnaie courante sur le marché du multimédia. Ainsi, lorsqu'il s'agit de visualiser une image spectrale en couleur, sur un écran traditionnel, seuls trois bandes peuvent être utilisées simultanément, ce qui implique une réduction de dimensionnalité. Cette étape doit permettre la préservation d'un maximum de contenu informatif tout en préservant contrastes et couleurs …
Giovani e musica: verso un'estetica sociale della musica
2007
In questo contributo si intende proporre una prima riflessione circa una pista di ricerca volta a definire i tratti teorici ed empirici di un’estetica sociale della musica. Si mira cioè a rintracciare e ricostruire una fenomenologia dei vissuti musicali a partire non tanto dalla domanda se e come la musica (intesa come significato e come testo) “esprima” o “rappresenti” il reale, quanto piuttosto dall’intento di accertare (attraverso una metodologia di tipo etnografico ed etnometodologico) se e come la musica possa essa stessa produrre la realtà, determinando certe forme e manifestazioni di azione sociale nel quotidiano. Ciò appare particolarmente significativo in un’epoca postmoderna e glo…
Le forbici e l’ago. Geometrie del reato ed eccedenze tra vissuti di ingiustizia, limiti del sistema penale e volti della Restorative Justice
2016
Il contributo ricostruisce le direttrici culturali che hanno progressivamente condotto alla consapevolezza dell’orizzonte “altro” della Restorative Justice in area penale. Muovendo dalla messa a fuoco delle meccaniche del processo giudiziario nella sua veste di selettore, idoneo, attraverso i propri filtri, a dar luogo a giudizi di rilevanza circa i dati dell’esperienza del reato meritevoli di far ingresso nel metabolismo della cognizione e della decisione penale, il contributo indaga sulle “eccedenze”, che i perimetri degli apparati della giustizia “tradizionale” collocano oltre le proprie cinte di confine e che pur incidono su dimensioni vitali dell’esperienza dell’offesa penalmente rilev…
Sing and Measure: Sound as Voice as Quanta
2022
The universal concept of a “music of the spheres” traverses the history of philosophy, science and art, from Pythagoras to Kepler and beyond. In modern times, a sphere in three dimensions—the Bloch sphere—is used to illustrate the state of a qubit, the basic unit of quantum information. On the same spherical surface, the fundamental components of voice production can be located, so that any utterance can be seen as the evolution of a unit two-dimensional vector having complex coefficients. Indeed, any sound can be analyzed and decomposed into overlapping sinusoidal components, broadband noises, and impulsive transients, which in turn can be associated to fundamental means of vocal sound pro…
Noble gases in tracking volcanic processess
2007
The expressions able to evaluate the contributions of the three natural sources of helium (e.g., atmosphere,in magma, following the solubility model proposed by Nuccio and Paonita (2001). In particular, variations of He/Ne and He/CO2 ratios have been used to compute the initial and final pressure of an ascending magma (Fig. 2) (Caracausi et alii 2003b, Rizzo et alii 2006). This model was subsequently implemented with S, Cl and F (Aiuppa et alii 2004), providing an useful geochemical tool aimed at giving an early warning for forecasting volcanic eruptions. The high helium flux measured at Mefite d’Ansanto in the Irpinian Apennines, displaying a He isotope composition analogous to that of Mt.…
Presentazione del volume L'ordinamento giudiziario. Ciclo di seminari (Palermo, marzo-maggio, 2018)
2019
Presentazione dei contributi raccolti nel volume
Relationship between volume and energy of vector fields
2001
Abstract A unified study of energy and volume functionals is presented here by determining the critical points of a functional that extends simultaneously energy and volume and that is defined on the product of the manifold of smooth maps C∞(M,N) times the manifold M of riemannian metrics on M. The restriction of this functional to different submanifolds of the space of vector fields X (M)× M is also considered, and used to study several functionals generalizing volume and energy or total bending of vector fields
Anticipatory Postural Adjustments and kinematic arm features when postural stability is manipulated
2018
International audience; Beyond the classical paradigm that presents the Anticipatory Postural Adjustments (APAs) as a manner to create forces that counteract disturbances arising from the moving segment during a pointing task, there is a controversial discussion about the role APAs to facilitate the movement and perform a task accurately. In addition, arm kinematics features are classically used to infer the content of motor planning for the execution and the control of arm movements, The present study aimed to disentangle the conflicting role of APAs during an arm-pointing task in which the subjects reach a central diode that suddenly turns on, while their postural stability was manipulate…