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See detailAllergies alimentaires : quel bilan ?
GADISSEUR, Romy ULg

Conference (2014, May 23)

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See detailDetection of non concave and non increasing multifractal spectra using wavelet leaders (Part II)
Kleyntssens, Thomas ULg; Esser, Céline ULg; Nicolay, Samuel ULg

Conference (2014, May 22)

This talk follows "Detection of non concave and non increasing multifractal spectra using wavelet leaders (Part I)" given by Céline Esser. A multifractal formalism is a numerically computable formula that ... [more ▼]

This talk follows "Detection of non concave and non increasing multifractal spectra using wavelet leaders (Part I)" given by Céline Esser. A multifractal formalism is a numerically computable formula that approximates the spectrum of singularities of a function. A new multifractal formalism based on the wavelet leaders is presented as well as a comparison with other formalisms. Its main advantages are that it allows to detect non concave and non increasing spectra. An implementation is proposed. [less ▲]

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See detailDetection of non concave and non increasing multifractal spectra using wavelet leaders (Part I)
Esser, Céline ULg; Kleyntssens, Thomas ULg; Bastin, Françoise ULg et al

Conference (2014, May 22)

Multifractal analysis is concerned with the study of very irregular signals. For such functions, the pointwise regularity may change widely from a point to another. Therefore, it is more interesting to ... [more ▼]

Multifractal analysis is concerned with the study of very irregular signals. For such functions, the pointwise regularity may change widely from a point to another. Therefore, it is more interesting to determine the spectrum of singularities of the signal, which is the Hausdor ff dimension of the set of points which have the same H ölder exponent. For real-life signals, the computation of the spectrum of singularities from its de finition is not feasible. Multifractal formalisms are used to approximate this spectrum. Currently, there exist several methods. In this talk, we present a new multifractal formalism based on the wavelet leaders of a signal which allows to detect non concave and non increasing spectra. [less ▲]

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See detailApplications des microalgues
Franck, Fabrice ULg; Remacle, Claire ULg

Conference (2014, May 22)

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See detailInteractive comment on “Improved routines to model the ocean carbonate system: mocsy 1.0” by J. C. Orr and J.-M Epitalon
Munhoven, Guy ULg

in Geoscientific Model Development Discussions [=GMDD] (2014), 7

The manuscript "Improved routines to model the ocean carbonate system: mocsy 1.0" by J. C. Orr and J.-M Epitalon is reviewed and related issues and ideas are discussed.

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See detailWestern lowland gorilla in a logging concession: comparison of density and nesting behavior before and after logging
Haurez, Barbara ULg; Petre, Charles-Albert ULg; Doucet, Jean-Louis ULg

Conference (2014, May 22)

Timber exploitation is rapidly expanding throughout the Congo Basin. In Gabon, timber industry is currently the second working sector and logging concessions cover 45% of the country forest area, largely ... [more ▼]

Timber exploitation is rapidly expanding throughout the Congo Basin. In Gabon, timber industry is currently the second working sector and logging concessions cover 45% of the country forest area, largely overlapping with the range of western lowland gorilla (Gorilla gorilla gorilla WLG). Logging may negatively impact gorilla because of an increase in hunting pressure linked to human concentration and easier access to forest. On the other hand, WLG might benefit from forest opening and the associated growth in Terrestrial Herbaceous Vegetation, following timber felling and roads/trails implementation. In the present study, gorilla density and nesting behavior were studied in a 617,000-ha logging concession located in Central Gabon. A Standing Crop Nest Count census was realized 25 years after the first timber harvesting cycle, consisting in the assessment of the potentiality of logged forest to hold viable WLG populations. A second census was undertaken four to six months after the second logging wave. Comparing nesting behavior and estimated gorilla density between the two census allows to highlight the short-term effects of logging on gorilla populations. A relatively high WLG density was observed during the first census (2.1 weaned gorillas/km²). This figure dropped down to 1.0 weaned gorillas/km² after the second felling cycle. Both density values fall within the range of documented WLG densities documented at other sites. Gorillas consistently nested preferentially in open terra firme forest and built the majority of their nests using herbs of the Marantaceae and Zingiberaceae families. Both these observations underline the importance of Terrestrial Herbaceous Vegetation for nesting. The results of this study suggest that timber exploitation and WLG conservation are not mutually exclusive. The initial high density might traduce an effective anti-poaching strategy for now. The decline in gorilla density observed directly in the second census is probably linked with the avoidance of the disturbance of logging operations. Monitoring the evolution of WLG density would be important in order to control if the figure will rise over time to reach its initial value, but also to assess if a positive effect of Terrestrial Herbaceous Vegetation growth will be observed. [less ▲]

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See detailDe France-Ville à la Panachie : (in)confort urbain et hygiène sociale dans le roman dystopique (1880-1940)
Stienon, Valérie ULg

Conference (2014, May 22)

Si la dystopie française choisit volontiers pour cadre la métropole parisienne, elle développe aussi la représentation de villes imaginaires, généralement désignées par un toponyme original : France-Ville ... [more ▼]

Si la dystopie française choisit volontiers pour cadre la métropole parisienne, elle développe aussi la représentation de villes imaginaires, généralement désignées par un toponyme original : France-Ville (Jules Verne, Les Cinq Cent Millions de la Bégum), Industria-City (Didier de Chousy, Ignis), la Morticolie (Léon Daudet, Les Morticoles), la Pingouinie (Anatole France, L’Île des Pingouins), la Siturgic (Claude Farrère, Les Condamnés à mort), Kentropol (Henri Allorge, Le Grand Cataclysme), la Panachie (Régis Messac, La Cité des asphyxiés), la Crétinie (Régis Messac, Valcrétin). Ces entités topographiques font l’objet de descriptions précises et détaillées, qui ancrent une organisation urbaine imaginaire dans un cadre narratif réaliste. L’architecture de la ville et l’infrastructure de l’habitat participent directement à l’élaboration de ces mondes alternatifs où il ne fait pas toujours bon vivre, depuis les aléas de l’application du programme hygiéniste de la « cité du bien-être » (Verne) jusqu’au monde souterrain inversé, alimenté par les déjections des classes inférieures (Messac). Toutes ces villes ont en commun de faire face à des tensions internes (révolte d’hommes-robots dans Industria-City et d’ouvriers dans la Siturgic, rationnement des ressources en Panachie, cruauté des habitants de Morticolie, dégénérescence des autochtones de Crétinie, explosions terroristes en Pingouinie) et à des menaces extérieures à l’origine de réorganisations géopolitiques qui placent les cités en rivales et ennemies (France-Ville attaquée par Stahlstadt, Kentropol en guerre contre Hérakloupol). Une étude de la poétique des infrastructures urbaines imaginées dans le roman dystopique français permet de préciser cette tension entre un élan réformiste vers le confort, l’efficacité et l’hygiène, et le constat d’une faible résistance aux obstacles fragilisant la ville comme entité humaine et matérielle. Les configurations de l’habitat, l’innovation des transports en commun et le fonctionnalisme du décorum domestique affichent simultanément leur efficacité et leur fragilité. Pour en rendre compte, deux aspects de la poétique urbaine du roman dystopique seront examinés. D’une part, l’intertextualité – explicite ou allusive – avec le discours architectural qui fonde l’agencement et la répartition des composantes de la ville (Le Corbusier cité dans Ravage de Barjavel, par exemple). D’autre part, le jeu de miroir entre les morphologies humaines, les valeurs sociales et les fonctions assignées aux bâtiments : symétrie synonyme d’intransigeance bornée et impitoyable (Daudet, Les Morticoles), répertoire littéraire urbain (Flaubert Street, Rosetti Park et Proust Avenue sur l’Île des Articoles d’André Maurois), interpénétration tératologique du corps à l’infrastructure (Xavier de Langlais, L’Île sous cloche). [less ▲]

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See detailMultifractal analysis of air temperature signals using the wavelet leaders method
Deliège, Adrien ULg; Nicolay, Samuel ULg

Conference (2014, May 22)

We use the discrete "wavelet transform microscope" to show that the surface air temperature signals of weather stations selected in Europe are monofractal. This study reveals that the information obtained ... [more ▼]

We use the discrete "wavelet transform microscope" to show that the surface air temperature signals of weather stations selected in Europe are monofractal. This study reveals that the information obtained in this way are richer than previous works studying long range correlations in meteorological stations. The approach presented here allows to bind the Hölder exponents with the climate variability. We also establish that such a link does not exist with methods previously carried out, such as the detrended fluctuation analysis. [less ▲]

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Peer Reviewed
See detailPersistence of decomposition odour in soil analysed by GC×GC-TOFMS
Perreault, K; Stefanuto, Pierre-Hugues ULg; Stuart, B et al

Conference (2014, May 22)

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See detailReasoning about fiction
Leclercq, Bruno ULg

Scientific conference (2014, May 22)

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See detailWhat Do Lawyers Do With Science? - A View from Consumer Protection on Psychology and Neuroscience
Sibony, Anne-Lise ULg

Conference (2014, May 21)

In this conference adressed to students and researchers in Neurosciences, I will present a legal perspective on some uses of neurosciences for marketing purposes. Legal, technical and ethical questions ... [more ▼]

In this conference adressed to students and researchers in Neurosciences, I will present a legal perspective on some uses of neurosciences for marketing purposes. Legal, technical and ethical questions will be articulated. I will further present some thoughts on legal use of scientific insights on human behaviour. [less ▲]

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See detailL’apprentissage de résolution de problèmes complexes (ARP - C) : un dispositif d’entrainement au travail interdisciplinaire
Maillart, Christelle ULg; Leclercq, Anne-Lise ULg; Lejeune, Caroline ULg et al

Conference (2014, May 21)

Les futurs logopèdes et futurs psychologues doivent apprendre à s’intégrer dans une prise en charge multidisciplinaire, à interagir efficacement avec d’autres professionnels, et à comprendre les limites ... [more ▼]

Les futurs logopèdes et futurs psychologues doivent apprendre à s’intégrer dans une prise en charge multidisciplinaire, à interagir efficacement avec d’autres professionnels, et à comprendre les limites de leur champ d’intervention. Pour entrainer ces apprentissages critiques, un dispositif interdisciplinaire a été proposé à 36 étudiants en logopédie et 14 étudiants en psychologie, tous en cinquième année de leur formation initiale à l’Université de Liège. Ces étudiants ont été confrontés à une vignette clinique dont la complexité justife le recours à divers intervenants. Cette vignette a été, dans un premier temps, analysé en petits groupes disciplinaires avec l’aide d’un tuteur (4 groupes en logopédie et 2 groupes en neuropsychologie). Ensuite, des groupes interdisciplinaires (composés de logopèdes et de neuropsychologues) ont été formés pour partager leurs analyses et avancer dans la formulation du diagnostic. Enfin, les étudiants ont eu l’occasion de rencontrer des professionnels d’autres disciplines (instituteur, psycho-pédagogue, etc.) avec lesquels ils ont du discuter des questions en suspens liées à la vignette analysée. L’évaluation du dispositif suggère que globalement les étudiants ont le sentiment d’avoir progressé quant à la maitrise de certains apprentissages critiques. Plus de 90% des étudiants relatent avoir progressé en évaluation pluridisciplinaire et différents indices indiquent qu’ils perçoivent l’intérêt de recourir à un réseau de professionnels. Par ailleurs, la perception du dispositif peut être différente selon les disciplines. Ainsi, 90% des psychologues mais seulement 60% des logopèdes estiment avoir progressé dans la prise de décisions argumentées par rapport à l’évaluation. Inversement, 30% des psychologues mais plus de 70% des logopèdes relatent des progrès pour la capacité à prioriser les recommandations thérapeutiques. Ces résultats seront analysés et discutés. [less ▲]

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See detailContinuous Manufacturing
Monbaliu, Jean-Christophe ULg

Scientific conference (2014, May 21)

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See detailStrategies to combine novel traits across countries: example of heat stress
Hammami, Hedi ULg; Vandenplas, Jérémie ULg; Carabaño, Maria Jesus et al

Conference (2014, May 21)

Nowadays, novel traits are of great interest. However, phenotypes are siloed and mainly not shared. Heat stress is becoming problematic affecting animals’ performances and their well-being. Heat stress ... [more ▼]

Nowadays, novel traits are of great interest. However, phenotypes are siloed and mainly not shared. Heat stress is becoming problematic affecting animals’ performances and their well-being. Heat stress tolerance as a novel trait is only addressed by isolated within-country research studies. Integration and combination of local and foreign information sources is needed for better accuracy genetic evaluations. Therefore, this study was aimed to test the potential combination of sources of external information towards the evaluation of heat stress tolerance of dairy cattle. Long-term cow performances linked to environmental descriptors (weather parameters as proxy to climate change) collected over 10 years under the temperate conditions of the Walloon Region of Belgium and the hotter and warm Mediterranean conditions of Andalusia and Castile-La-Mancha Spanish regions were available. A total of 1,604,775 milk, fat, and protein test-day (TD) records linked to average daily temperature humidity (THI) values for 3-day lag before each TD were considered. Under a first strategy considering free-access to raw-data (phenotype and pedigree), a joint evaluation was firstly run using reaction norm models where production traits were considered as function of THI. A Belgian and a Spanish evaluation were also run using the same model. An alternative strategy considering only access to external information (i.e. regression coefficients for additive genetic effects (â and their associated REL)) was tested. In this case, foreign â and their REL resulting from the Spanish evaluation were first converted to the Belgian trait and thereafter integrated in the Belgian evaluation using a Bayesian approach. Rank correlations between regression coefficients, â (of the 1,104 bulls having daughters only in Spain) estimated by Belgian evaluation and â estimated by the joint evaluation were moderate (<=0.70). Corresponding rank correlations between â estimated by joint and Bayesian evaluations were significantly higher (ranging from 0.967 to 0.998), indicating that the Bayesian evaluation integrating external information was in good concordance with the joint evaluation. Results from this study indicated that the integration of external information via the Bayesian approach has a good potential to improve the genetic evaluation of sparse and siloed novel traits. [less ▲]

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See detailCan Brand Engagement Be Built through the Brand Communication Style? The Role of Anthropomorphism.
Gretry, Anaïs ULg; Horváth, Csilla; Van Riel, Allard

Conference (2014, May 21)

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