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See detailComment j'explore le malaise du nourrisson
Zambelli, Laura ULg; Battisti, Oreste ULg

in Revue Médicale de Liège (2016), 71

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See detailHegel anthropologue
Lejeune, Guillaume ULg

Book published by CNRS-éditions (2016)

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See detailDSIMA: A testbed for the quantitative analysis of interaction models within distribution networks
Mathieu, Sébastien ULg; Louveaux, Quentin ULg; Ernst, Damien ULg et al

in Sustainable Energy, Grids and Networks (2016), 5

This article proposes an open-source testbed to simulate interaction models governing the exchange of flexibility services located within a distribution network. The testbed is an agent-based system in ... [more ▼]

This article proposes an open-source testbed to simulate interaction models governing the exchange of flexibility services located within a distribution network. The testbed is an agent-based system in which the distribution system operator, the transmission system operator, producers and retailers make their decisions based on mixed-integer linear programs. This testbed helps to highlight the characteristics of an interaction model, the benefits for the agents and eases the detection of unwanted or abusive behaviors which decreases the welfare. The testbed is implemented in Python and the optimization problems are encoded in the modeling language ZIMPL. A web interface is coupled with an instance generator using macroscopic parameters of the system such as the total power production. This testbed is, therefore, well suited to test the implemented interaction models on various scenarios and to extend the implementation to other models. Five interaction models developed with industrial partners are simulated over a year on a 75-bus test system. Simulations show that interaction models relying on active network management, as they have been developed, lead to substantial welfare even though they suffer from a lack of coordination between the DSO and the TSO. A conservative interaction model restricting grid users to an access range that is computed ahead of time to prevent any congestion, avoids shedding distributed generation but considerably restrains the amount of distributed production. [less ▲]

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See detailAnalyzing but Not Buying: The Mere Exposure Effect on Children’s Behavior in an Ecological Context
Geurten, Marie ULg; Geurten, Claire ULg; Willems, Sylvie ULg

Poster (2016)

The mere exposure effect is usually considered a robust phenomenon whereby people’s attitudes can easily be influenced. However, recent studies suggest that some conditions must be met for this effect to ... [more ▼]

The mere exposure effect is usually considered a robust phenomenon whereby people’s attitudes can easily be influenced. However, recent studies suggest that some conditions must be met for this effect to emerge. In this experiment, the influence of the features of a specific material on the mere exposure effect was examined in an ecological context. Children were told that they would play a game during which they would have to buy several items in different shops. In these shops, half of the participants were incidentally exposed to two target stimuli. During a subsequent judgment phase, the target stimuli were presented to each child, either with perceptually similar items or with perceptually dissimilar items. Prior encounter with an item only influenced children’s preference choices when the test items were dissimilar. These findings are discussed in terms of the processing styles that are necessary for the mere exposure effect to appear. [less ▲]

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See detailShort term impact of selective logging on a western lowland gorilla population
Haurez, Barbara ULg; Tagg, Nikki; Petre, Charles-Albert ULg et al

in Forest Ecology & Management (2016), 364

Selective timber production is implemented over a large proportion of the world’s tropical forests. Within these forest ecosystems, the frugivore community contributes important ecological services ... [more ▼]

Selective timber production is implemented over a large proportion of the world’s tropical forests. Within these forest ecosystems, the frugivore community contributes important ecological services through animal-mediated seed dispersal. However, there is no clear understanding of the impacts of logging on wildlife or of the extent to which seed dispersal is preserved in logged forests. Given its tendency for nesting in light gaps, the western lowland gorilla is likely to provide directed-dispersal services to a wide range of tree species. Production forests preserved from poaching have been reported to harbor high densities of gorillas, but the monitoring of gorilla populations subjected to logging is poorly documented. This study investigated gorilla density and nesting behavior after timber exploitation in a logging concession in southeast Gabon. Nest count censuses were performed on line transects, before and after the second felling cycle. Gorilla density dropped from 1.5 (116.7 nests km 2, 95% CI = 83.4–163.5) to 1.0 (64.9 nests km 2, % CI = 32.6–129.5) weaned gorilla km 2 4–6 months after logging, then rose to 2.6 (176.3 nests km 2, 95% CI = 113.5–274.1) gorillas km 2 9–11 months after logging. A consistent preference for nesting in open canopy terra firma forest was observed during all censuses. This study demonstrates the short-term resilience of the western lowland gorilla to selective timber harvesting, and argues that they offer a continued contribution to directed-dispersal services within months after logging. Although a long-term monitoring of gorillas in a logged forest should be undertaken, the role of this species in logged forest recovery is thought to be important. The preservation of gorilla should receive particular consideration by forest managers. [less ▲]

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See detail27 entrées du dictionnaire (Adorno, Bataille, Benjamin, Brecht, Burckhardt, etc.)
Hagelstein, Maud ULg

in Talon-Hugon, Carole (Ed.) Dictionnaire des théoriciens de l'art (2016)

Les notices du dictionnaire que je prends en charge : Adorno, Bataille, Benjamin, Burckhardt, Cassirer, Chastel, Deleuze, Dilthey, Faure, Focillon, Foucault, Francastel, Freud, Kracauer, Luckacs, Malraux ... [more ▼]

Les notices du dictionnaire que je prends en charge : Adorno, Bataille, Benjamin, Burckhardt, Cassirer, Chastel, Deleuze, Dilthey, Faure, Focillon, Foucault, Francastel, Freud, Kracauer, Luckacs, Malraux, Nietzsche, Panofsky, Riegl, Rousseau, Simmel, Valery, Vasari, Winkelman, Wölfflin, Worringer, Warburg. [less ▲]

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See detailContinuous-Flow N-Heterocyclic Carbene Generation and Organocatalysis
Di Marco, Lorenzo; Hans, Morgan; Delaude, Lionel ULg et al

in Chemistry : A European Journal (2016), 22

Two methods were assessed for the generation of common N heterocyclic carbenes (NHCs) from stable imidazol(in)¬ium precursors using convenient and straightforward continuous-flow setups with either a ... [more ▼]

Two methods were assessed for the generation of common N heterocyclic carbenes (NHCs) from stable imidazol(in)¬ium precursors using convenient and straightforward continuous-flow setups with either a heterogeneous inorganic base (Cs2CO3 or K3PO4) or a homoge¬neous organic base (KN(SiMe3)2). In-line quenching with carbon disulfide revealed that the homogeneous strategy was most efficient for the preparation of a small library of NHCs. The generation of free nucleophilic carbenes was next telescoped with two benchmark NHC-catalyzed reactions, namely, the transesterification of vinyl acetate with benzyl alcohol and the amidation of N-Boc-glycine methyl ester with ethanolamine. Both organocatalytic transfor¬ma¬tions proceeded with total conversion and excellent yields were achieved after extraction, showcasing the first examples of continuous-flow organocatalysis with NHCs. [less ▲]

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See detailFDG PET/CT texture analysis for predicting the outcome of lung cancer treated by stereotactic body radiation therapy.
LOVINFOSSE, Pierre ULg; Janvary, Zsolt Levente; COUCKE, Philippe ULg et al

in European journal of nuclear medicine and molecular imaging (2016)

INTRODUCTION: With 18F-FDG PET/CT, tumor uptake intensity and heterogeneity have been associated with outcome in several cancers. This study aimed at investigating whether 18F-FDG uptake intensity, volume ... [more ▼]

INTRODUCTION: With 18F-FDG PET/CT, tumor uptake intensity and heterogeneity have been associated with outcome in several cancers. This study aimed at investigating whether 18F-FDG uptake intensity, volume or heterogeneity could predict the outcome in patients with non-small cell lung cancers (NSCLC) treated by stereotactic body radiation therapy (SBRT). METHODS: Sixty-three patients with NSCLC treated by SBRT underwent a 18F-FDG PET/CT before treatment. Maximum and mean standard uptake value (SUVmax and SUVmean), metabolic tumoral volume (MTV), total lesion glycolysis (TLG), as well as 13 global, local and regional textural features were analysed. The predictive value of these parameters, along with clinical features, was assessed using univariate and multivariate analysis for overall survival (OS), disease-specific survival (DSS) and disease-free survival (DFS). Cutoff values were obtained using logistic regression analysis, and survivals were compared using Kaplan-Meier analysis. RESULTS: The median follow-up period was 27.1 months for the entire cohort and 32.1 months for the surviving patients. At the end of the study, 25 patients had local and/or distant recurrence including 12 who died because of the cancer progression. None of the clinical variables was predictive of the outcome, except age, which was associated with DFS (HR 1.1, P = 0.002). None of the 18F-FDG PET/CT or clinical parameters, except gender, were associated with OS. The univariate analysis showed that only dissimilarity (D) was associated with DSS (HR = 0.822, P = 0.037), and that several metabolic measurements were associated with DFS. In multivariate analysis, only dissimilarity was significantly associated with DSS (HR = 0.822, P = 0.037) and with DFS (HR = 0.834, P < 0.01). CONCLUSION: The textural feature dissimilarity measured on the baseline 18F-FDG PET/CT appears to be a strong independent predictor of the outcome in patients with NSCLC treated by SBRT. This may help selecting patients who may benefit from closer monitoring and therapeutic optimization. [less ▲]

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See detailIdentification and frequencies of cystic fibrosis mutations in central Argentina.
Pepermans, Xavier; Mellado, Soledad; Chialina, Sergio et al

in Clinical biochemistry (2016)

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See detailDes situations-limites au dépassement de la situation : phénoménologie d'un concept sartrien
Cormann, Grégory ULg; Englebert, Jérôme ULg

in Sartre Studies International (2016), 22(1),

Dans cet article, nous explorons le concept de situation, en-deçà et au-delà de sa thématisation par Sartre, à partir de L’imaginaire, dans les Carnets de la drôle de guerre puis dans L’être et le néant ... [more ▼]

Dans cet article, nous explorons le concept de situation, en-deçà et au-delà de sa thématisation par Sartre, à partir de L’imaginaire, dans les Carnets de la drôle de guerre puis dans L’être et le néant. Notre approche se fonde sur un double mouvement : d’une part, une archéologie du concept dans le contexte de la première percée de la phénoménologie en France dans les années 1930 ; d’autre part, une attention à son possible dépassement deux décennies plus tard. Dans une relation serrée avec les développements de la psychopathologie de son temps, il s’agit d’abord de situer la prétention de l’Esquisse d’une théorie des émotions à poser les bases d’une phénoménologie de « l’homme en situation », ensuite d’éclairer la reprise critique du concept dans Questions de méthode, dans l’exposition de la méthode progressive-régressive. En somme, il s’agit de montrer comment s’élabore progressivement chez Sartre une « herméneutique de l’existence » qui fait droit à la liberté, puis se donne les moyens d’en suivre l’action effective dans le monde. [less ▲]

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See detailOnline Learning for Strong Branching Approximation in Branch-and-Bound
Marcos Alvarez, Alejandro ULg; Wehenkel, Louis ULg; Louveaux, Quentin ULg

E-print/Working paper (2016)

We present an online learning approach to variable branching in branch-and-bound for mixed-integer linear problems. Our approach consists in learning strong branching scores in an online fashion and in ... [more ▼]

We present an online learning approach to variable branching in branch-and-bound for mixed-integer linear problems. Our approach consists in learning strong branching scores in an online fashion and in using them to take branching decisions. More specifically, numerical scores are used to rank the branching candidates. If, for a given variable, the learned approximation is deemed reliable, then the score for that variable is computed thanks to the learned function. If the approximation is not reliable yet, the real strong branching score is used instead. The scores that are computed through the real strong branching procedure are fed to the online learning algorithm in order to improve the approximated function. The experiments show promising results. [less ▲]

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See detailAn Improved Molecular Histology Method for Ion Suppression Monitoring and Quantification of Phosphatidyl Cholines During MALDI MSI Lipidomics Analyses.
Jadoul, Laure ULg; Smargiasso, Nicolas ULg; Pamelard, Fabien et al

in OMICS : A Journal of Integrative Biology (2016), 20(2), 110-21

Tissue lipidomics is one of the latest omics approaches for biomarker discovery in pharmacology, pathology, and the life sciences at large. In this context, matrix-assisted laser desorption/ionization ... [more ▼]

Tissue lipidomics is one of the latest omics approaches for biomarker discovery in pharmacology, pathology, and the life sciences at large. In this context, matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) is the most versatile tool to map compounds within tissue sections. However, ion suppression events occurring during MALDI MSI analyses make it impossible to use this method for quantitative investigations without additional validation steps. This is especially true for lipidomics, since different lipid classes are responsible for important ion suppression events. We propose here an improved lipidomics method to assess local ion suppression of phospatidylcholines in tissues. Serial tissue sections were spiked with different amounts of PC(16:0 d31/18:1) using a nebulization device. Settings for standard nebulization were strictly controlled for a detection similar to when using spiked tissue homogenates. The sections were simultaneously analyzed by MALDI MSI using a Fourier transform ion cyclotron resonance analyzer. Such a spray-based approach allows taking into account the biochemical heterogeneity of the tissue for the detection of PC(16:0 d31/18:1). Thus, here we present the perspective to use this method for quantification purposes. The linear regression lines are considered as calibration curves and we calculate PC(16:0/18:1) quantification values for different ROIs. Although those values need to be validated by a using a different independent approach, the workflow offers an insight into new quantitative mass spectrometry imaging (q-MSI) methods. This approach of ion suppression monitoring of phosphocholines in tissues may be highly interesting for a large range of applications in MALDI MSI, particularly for pathology using translational science workflows. [less ▲]

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See detailLa médiation animale comme dispositif technique
de Villers Grand Champs, Bénédicte ULg; Servais, Véronique ULg

in Servais, Christine (Ed.) La médiation. De la théorie aux terrains (2016)

Les pratiques thérapeutiques associant des animaux sont-elles des techniques thérapeutiques comme les autres ? Quelles sont les particularités de cette « médiation animale » dès lors que l’agent médiateur ... [more ▼]

Les pratiques thérapeutiques associant des animaux sont-elles des techniques thérapeutiques comme les autres ? Quelles sont les particularités de cette « médiation animale » dès lors que l’agent médiateur, l’animal, est vivant et partiellement ignorant du dispositif dans lequel il est inscrit ? Nous faisons ici l’hypothèse que les pratiques de médiation animale peuvent s’inscrire dans l’horizon de ce que Leroi-Gourhan nommait le « milieu technique », le « mi-lieu », cet entre-deux qui assure la rencontre, la mise en relation d’un vivant et de son monde. Ce mi-lieu n’a rien d’un cordon, même symbolique, qui relierait le patient, l’intervenant et l’animal. Il se présente plutôt sous la forme d’un écotone, du nom des écosystèmes qui se développent à la lisière de deux écosystèmes différents et dont l’écosystème côtier est le meilleur exemple. Nous nous appuyons sur les concepts de technique, de technique du corps, d’espace potentiel et de rituel pour essayer de comprendre ce processus de médiation dont un vivant animal est partie prenante et comment il se fait que des rencontres animales recèlent un potentiel thérapeutique [less ▲]

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See detailProcedural learning, consolidation, and transfer of a new skill in Developmental Coordination Disorder
Lejeune, Caroline ULg; Wansard, Murielle ULg; Geurten, Marie ULg et al

in Child Neuropsychology : A Journal on Normal & Abnormal Development in Childhood & Adolescence (2016), 22(2),

The aim of this study was to explore the differences in procedural learning abilities between children with DCD and typically developing children by investigating the steps that lead to skill ... [more ▼]

The aim of this study was to explore the differences in procedural learning abilities between children with DCD and typically developing children by investigating the steps that lead to skill automatization (i.e., the stages of fast learning, consolidation, and slow learning). Transfer of the skill to a new situation was also assessed. We tested 34 children aged 6–12 years with and without DCD on a perceptuomotor adaptation task, a form of procedural learning that is thought to involve the cerebellum and the basal ganglia (regions whose impairment has been associated with DCD) but also other brain areas including frontal regions. The results showed similar rates of learning, consolidation, and transfer in DCD and control children. However, the DCD children's performance remained slower than that of controls throughout the procedural task and they reached a lower asymptotic performance level; the difficulties observed at the outset did not diminish with practice. [less ▲]

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See detailAirewater interfacial properties of enzymatic wheat gluten hydrolyzates determine their foaming behavior
Wouters, Arno G.B.; Rombouts, Ine; Legein, Marie et al

in Food Hydrocolloids (2016), 55

Insight in the link between foaming and interfacial properties of proteins can increase their potential as functional agents in food systems. Here, foaming capacity and stability of structurally different ... [more ▼]

Insight in the link between foaming and interfacial properties of proteins can increase their potential as functional agents in food systems. Here, foaming capacity and stability of structurally different peptic and tryptic wheat gluten hydrolyzates were related to the kinetics of their adsorption at an airewater interface as well as to the properties of a compressed protein film at this interface. Foams from degree of hydrolysis (DH, i.e. the percentage of cleaved peptide bonds) 2 hydrolyzates were more stable than those from their DH 6 counterparts, and this at all protein concentrations tested. However, at protein concentrations from 0.010% to 0.050% (wprot/v), peptic DH 2 and 6 hydrolyzates had better foaming stability than their tryptic counterparts of the same DH. The opposite was observed when protein concentrations ranged from 0.050% to 0.150% (wprot/v). These observations can in part be explained by the molecular mass composition of the samples and, more importantly, by high levels of hydrophobic peptides in the DH 2 samples. The calculation of an average elasticity (up to 20e25 mN/m) from the variation in surface pressure for a variation in surface area in Langmuir isotherms showed that DH 2 samples had higher elasticity than DH 6 samples, which was in agreement with their foaming stabilities at various protein concentrations. Additionally, although not usually considered in literature, it seemed there was a correspondence between surface pressure at different protein surface concentrations and foaming stability at different protein concentrations. [less ▲]

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See detailThe Future of Ageing - Stakeholder Involvement on the Future of Care
Barland, Marianne; Delvenne, Pierre ULg; Rosskamp, Benedikt ULg

in Klüver, Lars; Øjvind Nielsen, Rasmus; Jørgensen, Marie Louise (Eds.) Policy-Oriented Technology Assessment Across Europe: Expanding Capacities (2016)

Barland et al. describe an example project showcasing the strengths of technology assessment methodology in structuring stakeholder dialogues in a cross-European context. The authors provide an in-depth ... [more ▼]

Barland et al. describe an example project showcasing the strengths of technology assessment methodology in structuring stakeholder dialogues in a cross-European context. The authors provide an in-depth account of the method design choices made and their underlying rationale. Beyond the buzzword, well-structured and transparent stakeholder dialogue can help to balance difficult issues of policy priority – in this case by balancing the contributions of technological innovation against social reorganization as a means of securing sustainable future health-care service for senior citizens. The article shows the added value of multi-site dialogues based in national debates but linked to the European policy development process [less ▲]

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