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See detailRelating pessimistic memory predictions to Alzheimer’s disease brain structure
Genon, Sarah ULg; Simon, Jessica ULg; Bahri, Mohamed Ali ULg et al

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (in press)

Patients with Alzheimer’s disease (AD) show impairment of episodic memory and related metacognitive processes. The present study examined subjective metacognitive judgments preceding objective memory ... [more ▼]

Patients with Alzheimer’s disease (AD) show impairment of episodic memory and related metacognitive processes. The present study examined subjective metacognitive judgments preceding objective memory retrieval and investigated the neural correlates of pessimistic predictions for successfully retrieved memories in AD patients. AD patients and healthy older participants provided predictive judgements on their recognition performance before retrieval of famous (semantic) and recently learned (episodic) names. Correlations between grey matter volume (GMV) in T1 images and behavioural scores were examined with multivariate (PLS) and univariate (GLM) analyses in AD patients. AD patients showed a significant proportion of successful name recognition preceded by pessimistic prediction (Prediction_low_hits) in episodic memory. PLS revealed that behavioural pattern in AD patients was related with a mainly right lateralized pattern of GMV decrease including medial temporal lobe and posterior cingulate cortex, but also right ventrolateral prefrontal cortex (VLPFC). GLM further confirmed that pessimistic prediction negatively correlated with GMV in VLPFC. Thus, impaired monitoring processes (possibly influenced by inaccurate beliefs) allowing inferences about one’s own memory performance are primarily related to decrease GMV in VLPFC in AD patients. [less ▲]

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See detailRONALD JENN ET CORINE OSTER (dir.) (2014) : Territoires de la traduction. Artois : Artois Presses Université, 212 p.
Oumarou Mal Mazou, Rachid ULg

in Meta : Journal des Traducteurs = Meta : Translators' Journal (in press)

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See detailTraduction de "Sense and Its Place in Meaning" de W.V.O. Quine
Moreau, Timothée ULg

in Philosophie (in press)

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See detailPropagation of material and surface profile uncertainties on MEMS micro-resonators using a stochastic second-order computational multi-scale approach
Lucas, Vincent ULg; Golinval, Jean-Claude ULg; Voicu, Rodica et al

in International Journal for Numerical Methods in Engineering (in press)

This paper aims at accounting for the uncertainties due to material structure and surface topology of microbeams in a stochastic multiscale model. For micro-resonators made of anisotropic polycrystalline ... [more ▼]

This paper aims at accounting for the uncertainties due to material structure and surface topology of microbeams in a stochastic multiscale model. For micro-resonators made of anisotropic polycrystalline materials, micro-scale uncertainties are due to the grain size, grain orientation, and to the surface profile. First, microscale realizations of stochastic volume elements (SVEs) are obtained based on experimental measurements. To account for the surface roughness, the SVEs are defined as a volume element having the same thickness as the MEMS, with a view to the use of a plate model at the structural scale. The uncertainties are then propagated up to an intermediate scale, the meso-scale, through a second-order homogenization procedure.From the meso-scale plate resultant material property realizations, a spatially correlated random field of the in plane, out of plane, and cross resultant material tensors can be characterized. Owing to this characterized random field, realizations of MEMS-scale problems can be defined on a plate finite element model. Samples of the macro-scale quantity of interest can then be computed by relying on a Monte-Carlo simulation procedure. As a case study, the resonance frequency of MEMS micro-beams is investigated for different uncertainty cases, such as grain preferred orientations and surface roughness effects. [less ▲]

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See detailDonnées des bases latines du LASLA et classification générique
Longrée, Dominique ULg

in Les Etudes Classiques (in press)

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See detailSiblings and the coming out process: a comparative case study
Haxhe, Stéphanie ULg; Cerezo, Alison; Bergfeld, Jeanette et al

in Journal of Homosexuality (in press)

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See detailMolecular dynamics study of micelle proeprties according to their size
Lebecque, Simon ULg; Crowet, Jean-Marc ULg; Nasir, Mehmet Nail ULg et al

in Journal of Molecular Graphics and Modelling (in press)

Surfactants are molecules able to spontaneously self-assemble to form aggregates with well-defined properties, such as spherical micelles, planar bilayers, cylindrical micelles or vesicles. Micelles have ... [more ▼]

Surfactants are molecules able to spontaneously self-assemble to form aggregates with well-defined properties, such as spherical micelles, planar bilayers, cylindrical micelles or vesicles. Micelles have notably several applications in many domains, such as drug delivery or membrane protein solubilization. In this context, the study of micelle formation in relation with the structural and physico-chemical properties of surfactants is of great interest to better control their use in the different application fields. In this work, we use the MD approach developed by Yoshii et al. and extend it to surfactants with different structures. We aim to systematically investigate different micellar properties as a function of the aggregates size by a molecular dynamics approach, to get an insight into the micellar organization and to collect some relevant descriptors about micelle formation. For this, we perform short MD simulations of preformed micelles of various sizes and analyze three parameters for each micelle size, namely the eccentricity of the micelles, the hydrophobic/hydrophilic surface ratio and the hydrophobic tails hydration. If these parameters are known descriptors of micelles, they were not yet studied in this way by MD. We show that eccentricity, used as “validator” parameter, exhibits minimal values when the aggregate size is close to the experimental aggregation number for surfactants that are known to form spherical micelles. This hence indicates that our methodology gives consistent results. The evolution of the two descriptors follows another scheme, with a sharp increase and decrease, respectively, followed by a leveling-off. The aggregate sizes at which this stabilization starts to occur are close to the respective aggregation number of each surfactant. In our approach, we validate the use of these descriptors to follow micelle formation by MD, from “simple” surfactants to more complex structures, like lipopeptides. Our calculations also suggest that some peculiar behavior, like that of TPC, can be highlighted by our approach. In the context of peptidic surfactants, our methodology could further help to improve computer simulations combined to molecular thermodynamic models to predict micellar properties of those more complex amphiphilic molecules. [less ▲]

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See detailJésus caricaturé ? À propos des Proses évangéliques
Saint-Amand, Denis ULg; Roland, Florine

in Parade Sauvage (in press), 27

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See detailChemokine neutralization as an innovative therapeutic strategy for atopic dermatitis
Abboud, Dayana ULg; Hanson, Julien ULg

in Drug Discovery Today (in press)

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See detailPreterm Infant Growth Velocity Calculations: A Systematic Review
Fenton, Tanis; Chan, Hilton; Madhu, Aiswarya et al

in Pediatrics (in press)

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See detailTwo-domain and three-domain limit cycles in a typical aeroelastic system with freeplay in pitch
Verstraelen, Edouard ULg; Dimitriadis, Grigorios ULg; Dal Ben Rossetto, Gustavo et al

in Journal of Fluids & Structures (in press)

Freeplay is a significant source of nonlinearity in aeroelastic systems and is strictly regulated by airworthiness authorities. It splits the phase plane of such systems into three piecewise linear ... [more ▼]

Freeplay is a significant source of nonlinearity in aeroelastic systems and is strictly regulated by airworthiness authorities. It splits the phase plane of such systems into three piecewise linear subdomains. Depending on the location of the freeplay, limit cycle oscillations can result that span either two or three of these subdomains. The purpose of this work is to demonstrate the existence of two-domain cycles both theoretically and experimentally. A simple aeroelastic system with pitch, plunge and control deflection degrees of freedom is investigated in the presence of freeplay in pitch. It is shown that two-domain and three-domain cycles can result from a grazing bifurcation and propagate in the decreasing airspeed direction. Close to the bifurcation, the two limit cycle branches interact with each other and aperiodic oscillations ensue. Equivalent linearization is used to derive the conditions of existence of each type of limit cycle and to predict their amplitudes and frequencies. Comparisons with measurements from wind tunnel experiments demonstrate that the theory describes these phenomena with accuracy. [less ▲]

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See detailSome paradoxes of cultural/music diplomacy in a federal country. The case of Flanders in Belgium
Mazzola, Alessandro ULg

in Dunkel, Mario; Nitzsche, Sina (Eds.) Music and Public Diplomacy (in press)

Belgium's public diplomacy cannot be understood without the frame of the political divide characterizing federalism in the country. Unlike others federal states whose self-governing components adopt ... [more ▼]

Belgium's public diplomacy cannot be understood without the frame of the political divide characterizing federalism in the country. Unlike others federal states whose self-governing components adopt policies that converge at the international level, Flanders and Wallonia – the Dutch- and French-speaking communities of Belgium – seem not to act coordinately on this matter. Culture is the principal field where the two communities adopt very different approaches and end up competing for resources and international visibility. Flanders, in particular, support self-representation strategies that produce and circulate images of a singular and homogeneous “Flemish nation”. The action of its cultural institutions seems to focus on an autonomous nation building project rather than situating the community in the larger national – Belgian – dimension. Language is the cultural trait lying at the basis of this conflict known as “community cleavage” that affects both the public and the political sphere. As a verbal art, popular music is one of the most simbolically relevant practices that participate to cultural diplomacy in this context. Starting from ethnographic analysis of Flemish public and private cultural institutions, this paper aims to describe the ways Flemish music policy in international situations is mutually connected to political claims for autonomy and independence at the national level. The research questions are as follows: 1) how does Belgian federalism condition cultural/music diplomacy in Flanders? 2) How does cultural/music diplomacy contribute to the political struggle of Flemish independentism? [less ▲]

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See detailImproving pedestrian detection using motion-guided filtering
Wang, Yi; Pierard, Sébastien ULg; Su, Song-Zhi et al

in Pattern Recognition Letters (in press)

In this letter, we show how a simple motion-guided nonlinear filter can drastically improve the accuracy of several pedestrian detectors. More specifically, we address the problem of how to pre-filter an ... [more ▼]

In this letter, we show how a simple motion-guided nonlinear filter can drastically improve the accuracy of several pedestrian detectors. More specifically, we address the problem of how to pre-filter an image so almost any pedestrian detector will see its false detection rate decrease. First, we roughly identify moving pixels by cumulating their temporal gradient into a motion history image (MHI). The MHI is then used in conjunction with a nonlinear filter to filter out background details while leaving untouched foreground moving objects. We also show how a feedback loop as well as a merging procedure between the filtered and the unfiltered frames can further improve results. We tested our method on 26 videos from 6 categories. The results show that for a given miss rate, filtering out background details reduces the false detection rate by a factor of up to 69.6 times. Our method is simple, computationally light, and can be implemented with any pedestrian detector. Code is made publicly available at: https://bitbucket.org/wany1601/pedestriandetection. [less ▲]

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