Search results for "image"

Immersion revisited:A review of existing definitions of immersion and their relation to different theories of presence

2016

The term immersion continues to be applied inconsistently within and across different fields of research connected with the study of virtual reality and interactive media. Moreover, immersion is oftentimes used interchangeably with the terms presence and engagement. This article details a review of existing definitions of immersion originating within the study of video games, virtual environments, and literary works of fiction. Based on this review, a three-dimensional taxonomy of the various conceptualizations of immersion is proposed. That is, the existing definitions of immersion may be broadly divided into three categories, each representing a dimension of the taxonomy: immersion as a p…

Las columnas de Arturo Pérez-Reverte entre descortesía y virtud

2020

Impoliteness is a prevailing feature in Arturo Pérez-Reverte’s columns. Against all odds, it has a big argumentative effectiveness, since it allows the locutor to show an image of himself which is virtuous, that is a sincere, credible and, for this reason, persuasive. After all, as Aristotle states in his Rhetoric, persuasion depends on locutor’s ability to project an attractive ethos (self-image). Among the qualities that guarantees this attraction, the Stagirite includes the virtue, i.e. the speaker’s ability to tell frankly his/her opinions and ideas. In Pérez-Reverte’s columns, the realization of this quality is exactly what determines a frankness bordering sometimes on impoliteness. Ho…

Restoring the body: changes in body self in the course of a focusing and arts-based therapy program for female interpersonal trauma survivors

2019

BackgroundThe goal of this study was to assess the effectiveness of a therapeutic program for female survivors of interpersonal trauma, among others, of domestic violence. The participating women took part in four two-day modules in a group setting during which they were offered focusing training and arts-based Gestalt therapy. The effectiveness of the interventions was evaluated in terms of improvements in body image and body experience, according to the model of body self as developed by Sakson-Obada.Participants and procedureThe Body-Self Questionnaire, the Affective Body Image test and the Draw-a-Woman test were administered to 21 participants before and after the program.ResultsAfter t…

IP 3 signalling regulates exogenous RNA i in C aenorhabditis elegans

2015

RNA interference (RNAi) is a widespread and widely exploited phenomenon. Here, we show that changing inositol 1,4,5-trisphosphate (IP3) signalling alters RNAi sensitivity in Caenorhabditis elegans. Reducing IP3 signalling enhances sensitivity to RNAi in a broad range of genes and tissues. Conversely up-regulating IP3 signalling decreases sensitivity. Tissue-specific rescue experiments suggest IP3 functions in the intestine. We also exploit IP3 signalling mutants to further enhance the sensitivity of RNAi hypersensitive strains. These results demonstrate that conserved cell signalling pathways can modify RNAi responses, implying that RNAi responses may be influenced by an animal's physiology…

Handicap, (in)visibilité et vécu du temps

2022

VERS UNE ARCHITECTURE UNIFIÉE ET ZÉRO TEMPS MORT POUR L'INSTRUMENTATION NUCLÉAIRE

2014

National audience; Dans l’instrumentation nucléaire, et d’autres domaines tels que les applications de la physique des particules, l’analyse de signaux médicaux (Tomographie par Emission de Positons (TEP), Electro-EncephaloGraphie (EEG)) ou la détection de signaux radar, le signal mesuré est composé d’impulsions dont la date d’arrivée est aléatoire, et dont l’amplitude et la durée sont non-d´eterministes. La grande variété d’applications nécessite de disposer d’une architecture flexible pouvant être aisément reprogrammée. De plus, l’exigence de mesures en temps réel impose de disposer d’une grande capacité de calcul et de bande passante pour la mise en forme et l’extraction des caractéristi…

On modified α-ϕ-fuzzy contractive mappings and an application to integral equations

2016

Abstract We introduce the notion of a modified α-ϕ-fuzzy contractive mapping and prove some results in fuzzy metric spaces for such kind of mappings. The theorems presented provide a generalization of some interesting results in the literature. Two examples and an application to integral equations are given to illustrate the usability of our theory.

Semi-blind Source Extraction Methods: Application to the measurement of non-contact physiological signs

2018

Non-contact physiological measurements are highlydesirable in many biomedical fields such asdiagnosis of infants, geriartic patients, patients withextreme physical trauma, and fitness and well-being.Remote photoplethysmography is increasingly beingused for non-contact measurement of heart rate fromvideos which is one of the most common biomedicalproperty required for most medical diagnosis. Oneof the common techniques for performing remotephotoplethysmography involves using Blind SourceSeparation (BSS) methods to extract the cardiacsignal from video data.In this context, the objective of this thesis is todevelop different methods in the field of extractionand separation of sources by improv…

Determination of reflectance spectra model of skin phototypes V

2012

In dermatology, skin is assessed for its response to UV light and is categorised under the Fitzpatrick skin type (FST). The FST is commonly applied as a predictor of skin cancer. The FST classification however is subjective. To enable an objective assessment, a pattern model of skin colour taken from normal subjects is required. In this paper, a model for skin phototype (SPT) V is developed and presented. We conducted an observational study involving 41 participants with FST V. The study analysed the reflectance spectra of facultative skin and constitutive skin which was captured using spectrophotometer and multispectral camera. Using piecewise linear regression, we modelled the reflectance…

Hume’s Guillotine in Designing Ethically Intelligent Technologies

2020

Intelligent machines can follow ethical rules in their behaviour. However, it is less clear whether intelligent systems can also create new ethical principles. The former position can be called weak ethical AI and the latter strong ethical AI. Hume’s guillotine which claims that one cannot derive values from facts appears to be a fundamental obstacle to strong ethical AI. The analysis of human ethical information processes provides clarity to the possibility of strong ethical AI. Human ethical information processing begins with positive of negative emotions associated to situations. Situations can be seen as consequences of actions and for this reason people can define rules about acceptabi…