Search results for "source"
showing 10 items of 6139 documents
Brain Source Correlates of Speech Perception and Reading Processes in Children With and Without Reading Difficulties
2022
Neural correlates in reading and speech processing have been addressed extensively in the literature. While reading skills and speech perception have been shown to be associated with each other, their relationship remains debatable. In this study, we investigated reading skills, speech perception, reading, and their correlates with brain source activity in auditory and visual modalities. We used high-density event-related potentials (ERPs), fixation-related potentials (FRPs), and the source reconstruction method. The analysis was conducted on 12–13-year-old schoolchildren who had different reading levels. Brain ERP source indices were computed from frequently repeated Finnish speech stimuli…
Les thermes, le ski, et puis la nuit. Des stations illuminées à la valorisation des ressources environnementales nocturnes dans les territoires touri…
2015
International audience; Les réflexion engagées par le Collectif RENOIR interrogent le devenir des territoires touristiques au regard d’un processus émergent : la considération de la nuit et du paysage nocturne dans les projets de territoires. La mise en scène de ce que nous appelons des « ressources environnementales nocturnes » est appréhendée comme point de départ pour l’observation des stations touristiques en transition.Ce processus s’accompagne de mutations profondes, qui trouvent leurs sources dans la remise en cause d’un éclairage urbain (monumental, de voirie, de sécurisation, etc.) focalisé, jusque dans les années 1980, sur des aspects quantitatifs. Les différentes fonctions de l’é…
Sources of Revenues and the Potential of NGOs Conducting Sports-Related Mission
2020
The conditions behind the functioning of non-governmental organisations translate into particular specifics of their resources. According to the Resource Dependence Theory, the ability to acquire and retain resources is the key to survival and development of organisations. However, the structure of the sources from which they are generated may influence the way of functioning and the choice of actions taken up by organisations. Therefore, it was assumed that the share of public funding in total revenues does differentiate NGOs. Thus, the aim of the study was to identify the structure of revenues of NGOs which undertake sports-related tasks as well as to recognise the differentiation of feat…
ICA and stochastic volatility models
2016
We consider multivariate time series where each component series is an unknown linear combination of latent mutually independent stationary time series. Multivariate financial time series have often periods of low volatility followed by periods of high volatility. This kind of time series have typically non-Gaussian stationary distributions, and therefore standard independent component analysis (ICA) tools such as fastICA can be used to extract independent component series even though they do not utilize any information on temporal dependence. In this paper we review some ICA methods used in the context of stochastic volatility models. We also suggest their modifications which use nonlinear…
Signal dimension estimation in BSS models with serial dependence
2022
Many modern multivariate time series datasets contain a large amount of noise, and the first step of the data analysis is to separate the noise channels from the signals of interest. A crucial part of this dimension reduction is determining the number of signals. In this paper we approach this problem by considering a noisy latent variable time series model which comprises many popular blind source separation models. We propose a general framework for the estimation of the signal dimension that is based on testing for sub-sphericity and give examples of different tests suitable for time series settings. In the inference we rely on bootstrap null distributions. Several simulation studies are…
Evidence of energy and nutrient transfer from invasive pink salmon (Oncorhynchus gorbuscha) spawners to juvenile Atlantic salmon (Salmo salar) and br…
2021
Recent large influxes of non‐native Pacific pink salmon (Oncorhynchus gorbuscha) to North European rivers have raised concern over their potential negative impacts on native salmonids and recipient ecosystems. The eggs and carcasses of semelparous pink salmon may provide a significant nutrient and energy subsidy to native biota, but this phenomenon has not been widely documented outside the species' native distribution. We analysed the stomach contents and stable isotope values (δ15N and δ13C) in muscle and liver tissues of juvenile Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) to determine whether these native salmonids utilise marine‐derived nutrients and energy provided by…
Upward Voice: Participative Decision Making, Trust in Leadership and Safety Climate Matter
2020
A supportive upward voice environment is critical in nuclear power plants in order to provide energy in a sustainable manner. In high&ndash
TeamLab : au-delà de quelles limites ? Le numérique à la portée des publics
2019
L’article va étudier l’exposition « TeamLab : au-delà des limites », qui s’est déroulée à la Halle de la Villette à Paris du 15 mai au 9 septembre 2018. Il s’agit de mettre en évidence les nouveaux usages et les expériences induits au visiteur par cette exposition temporaire qualifiée d’immersive entièrement construite sur des outils numériques. Peut-on encore parler d’exposition ? L’emploi d’interfaces conviviales permet-il de dépasser les barrières culturelles et valoriser le pays mis à l’honneur dans ce parcours exploratoire : le Japon ? This text intends to study the « TeamLab : beyond the limits » exhibition which took place at the Halle de la Villette in Paris from 15 May to 9 Septemb…
isotracer: An R package for the analysis of tracer addition experiments
2022
Tracer addition experiments, particularly using isotopic tracers, are becoming increasingly important in a variety of studies aiming at characterizing the flows of molecules or nutrients at different levels of biological organization, from the cellular and tissue levels, to the organismal and ecosystem levels. However, performing rigorous statistical analyses to gain reliable quantitative insights from these experiments often remains challenging. We present an approach based on Hidden Markov Models (HMM) to estimate nutrient flow parameters across a network, and its implementation in the R package isotracer. The isotracer package is capable of handling a variety of tracer study designs, inc…
INTEGRAL observations of GRB 070311
2008
We present prompt {gamma}-ray, early NIR/optical, late optical and X-ray observations of the peculiar GRB 070311 discovered by INTEGRAL, in order to gain clues on the mechanisms responsible for the prompt {gamma}-ray pulse as well as for the early and late multi-band afterglow of GRB 070311. We fitted with empirical functions the gamma-ray and optical light curves and scaled the result to the late time X-rays.