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See detailTriangles de Pascal et compagnie
Stipulanti, Manon ULg

Conference (2017, April 19)

Le triangle de Pascal classique ainsi que le triangle de Sierpiński sont des objets largement étudiés. Ils montrent des aspects auto-similaires et ont des liens avec les systèmes dynamiques, les automates ... [more ▼]

Le triangle de Pascal classique ainsi que le triangle de Sierpiński sont des objets largement étudiés. Ils montrent des aspects auto-similaires et ont des liens avec les systèmes dynamiques, les automates cellulaires, la théorie des nombres et les suites dites automatiques. Dans ce séminaire, nous présentons un travail en collaboration avec Julien Leroy et Michel Rigo. Dans un premier temps, nous introduisons une généralisation du triangle de Pascal basée sur les coefficients binomiaux de mots finis et nous étudions le cas plus particulier des représentations en base 2. Ces coefficients comptent le nombre de fois qu’un mot fini apparaît comme sous-suite d’un autre mot fini. De la même façon que le triangle de Sierpiński peut être construit comme l’ensemble limite, pour la distance de Hausdorff, d’une suite convergente de compacts renormalisés extraits du triangle de Pascal classique modulo 2, nous décrivons et étudions les premières propriétés du sous-ensemble de [0, 1] × [0, 1] associé à ce triangle de Pascal généralisé modulo un nombre premier p. Dans un second temps, nous étudions la suite qui compte, sur chaque ligne du triangle de Pascal généralisé en base 2, le nombre de coefficients binomiaux strictement positifs. Cette suite présente une régularité étonnante qui peut être mise en évidence en utilisant une structure particulière de graphes, appelée arbre des sous-mots. [less ▲]

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See detailNew PVT Metrics. Improved Sensitivity to Sleep Deprivation
Latour, Philippe ULg

Diverse speeche and writing (2017)

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See detailIntroduction: Comics and Memory
Ahmed, Maaheen; Crucifix, Benoît ULg

Conference (2017, April 19)

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See detailLa lyre anthropomorphe C.94 de Vienne. Un instrument emblématique de la Renaissance italienne
Bugini, Mariaelena ULg

Scientific conference (2017, April 18)

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See detailL’insémination artificielle bovine : un traitement qui nécessite le constat d’oestrus. Comprendre pour agir.
Hanzen, Christian ULg

Conference given outside the academic context (2017)

Au cours de ces 70 dernières années d’utilisation de l’insémination artificielle (IA) (1946 année de naissance du premier veau issu de l’IA), la fertilité bovine n’a fait que décliner. Le taux de ... [more ▼]

Au cours de ces 70 dernières années d’utilisation de l’insémination artificielle (IA) (1946 année de naissance du premier veau issu de l’IA), la fertilité bovine n’a fait que décliner. Le taux de gestation était compris entre 44 et 48 % il y a 40 ans, elle est comprise entre 33 et 40 % actuellement. L’oestrus (dont la durée moyenne a également diminué au cours des années) constitue la phase clé de l’IA. Naturel ou induit, il constitue une étape indispensable à l’obtention d’une gestation. Ses caractéristiques hormonales et comportementales sont susceptibles d’être modifiées par de multiples facteurs inhérents à la production laitière ou à des pathologies liées au système reproducteur mais pas seulement. L’IA se définit comme une biotechnologie de la reproduction qui consiste à déposer un sperme de qualité au moyen d’une méthode et d’un matériel adéquat à l’endroit anatomique le plus approprié, au moment le plus opportun et d’une technique. Cet acte est tout sauf banal compte tenu des conséquences économiques importantes tant positives que négatives qu’il peut entraîner. Répondre à la question de savoir si la vache est « inséminable » n’est pas chose simple. Les moyens propédeutiques disponibles se sont avec le temps étoffés. Un état des lieux s’imposerait donc. A l’analyse de l’anamnèse et des symptômes et signes cliniques manifestés par la vache en oestrus, des stratégies hormonales ou non peuvent le cas échéant être mises en place. Encore convient-il d’en mesurer la pertinence. Au terme de la formation, l’apprenant sera capable de… - comprendre l’effet des facteurs hormonaux ou non susceptibles de modifier les manifestations oestrales et la fertilité - mettre en place le cas échéant des méthodes propédeutiques alternatives visant à confirmer ou non la décision d’inséminer une vache - décider du recours ou non à des stratégies thérapeutiques ou techniques pour augmenter le taux de gestation suite à une insémination [less ▲]

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See detailThe recent warming trend in North Greenland
Orsi, A.; Kawamura, K.; Masson-Delmotte, V. et al

in Geophysical Research Letters (2017)

The Arctic is among the fastest warming regions on Earth, but it is also one with limited spatial coverage of multi-decadal instrumental surface air temperature measurements. Consequently, atmospheric ... [more ▼]

The Arctic is among the fastest warming regions on Earth, but it is also one with limited spatial coverage of multi-decadal instrumental surface air temperature measurements. Consequently, atmospheric reanalyses are relatively unconstrained in this region, resulting in a large spread of estimated 30-year recent warming trends, which limits their use to investigate the mechanisms responsible for this trend. Here, we present a surface temperature reconstruction over 1982-2011 at NEEM (51∘ W, 77∘ N), in North Greenland, based on the inversion of borehole temperature and inert gas isotope data. We find that NEEM has warmed by 2.7±0.33∘C over the past 30 years, from the long-term 1900-1970 average of -28.55±0.29∘C. The warming trend is principally caused by an increase in downward longwave heat flux. Atmospheric reanalyses underestimate this trend by 17%, underlining the need for more in situ observations to validate reanalyses. [less ▲]

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See detailHacia una teoría sobre la autoficción (neo)fantástica hispanoamericana: un análisis del miedo en Wasabi de Alan Pauls, El gran vidrio de Mario Bellatín y Los ingrávidos de Valeria Luiselli
Licata, Nicolas ULg

Conference (2017, April 18)

Después de determinar cuáles son los límites que le conceden disciplinas como la historia de las emociones, el psicoanálisis y la filosofía, esta breve comunicación se centra en el miedo como efecto de la ... [more ▼]

Después de determinar cuáles son los límites que le conceden disciplinas como la historia de las emociones, el psicoanálisis y la filosofía, esta breve comunicación se centra en el miedo como efecto de la literatura fantástica, y más concretamente, en el marco de esa categoría específica de novelas que Vincent Colonna ha bautizado “autoficción fantástica” (2004). A la luz de tres de estas ficciones fantásticas modernas articuladas en torno a sus propios autores, explicamos por qué, en nuestra opinión, el efecto que producen en el lector (implícito) difiere del miedo. No se trata de un efecto inferior o superior, sino sencillamente distinto: la angustia. [less ▲]

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See detailScaling Theory of the Anderson Transition in Random Graphs: Ergodicity and Universality
Garcia-Mata, Ignacio; Giraud, Olivier; Georgeot, Bertrand et al

in Physical Review Letters (2017), 118

We study the Anderson transition on a generic model of random graphs with a tunable branching parameter 1 < K < 2, through large scale numerical simulations and finite-size scaling analysis. We find that ... [more ▼]

We study the Anderson transition on a generic model of random graphs with a tunable branching parameter 1 < K < 2, through large scale numerical simulations and finite-size scaling analysis. We find that a single transition separates a localized phase from an unusual delocalized phase that is ergodic at large scales but strongly nonergodic at smaller scales. In the critical regime, multifractal wave functions are located on a few branches of the graph. Different scaling laws apply on both sides of the transition: a scaling with the linear size of the system on the localized side, and an unusual volumic scaling on the delocalized side. The critical scalings and exponents are independent of the branching parameter, which strongly supports the universality of our results. [less ▲]

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See detailVers une (r)évolution du renseignement belge : la nécessaire émergence d'une communauté du renseignement
Leroy, Patrick ULg

in Revue "Diplomatie" (2017)

Le renseignement belge entre dans une période de (r)évolution amenée par la crise des attentats qui secouent le sol européen. La tentations est grande pour les décideurs politiques de palier les "failles ... [more ▼]

Le renseignement belge entre dans une période de (r)évolution amenée par la crise des attentats qui secouent le sol européen. La tentations est grande pour les décideurs politiques de palier les "failles" du renseignement par des mesures radicales qui pourraient atteindre l'ADN, le coeur de métier du renseignement. [less ▲]

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See detailAtelier : ENMG de l'épaule
WANG, François-Charles ULg

Conference (2017, April 15)

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See detailExploration ENMG du plexus brachial
WANG, François-Charles ULg

Conference (2017, April 15)

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See detailExtracting residues from stone tools for optical analysis: towards an experiment-based protocol
Cnuts, Dries ULg; Rots, Veerle ULg

in Archaeological and Anthropological sciences (2017)

The identification of residues is traditionally based on the distinctive morphologies of the residue fragments by means of light microscopy. Most residue fragments are amorphous, in the sense that they ... [more ▼]

The identification of residues is traditionally based on the distinctive morphologies of the residue fragments by means of light microscopy. Most residue fragments are amorphous, in the sense that they lack distinguishing shapes or easily visible structures under reflected light microscopy. Amorphous residues can only be identified by using transmitted light microscopy, which requires the extraction of residues from the tool’s surface. Residues are usually extracted with a pipette or an ultrasonic bath in combination with distilled water. However, a number of researchers avoid residue extraction because it is unclear whether current extraction techniques are representative for the use-related residue that adheres to a flaked stone tool. In this paper, we aim at resolving these methodological uncertainties by critically evaluating current extraction methodologies. Attention is focused on the variation in residue types, their causes of deposition and their adhesion and on the most successful technique for extracting a range of residue types from the stone tool surface. Based on an experimental reference sample in flint, we argue that a stepwise extraction protocol is most successful in providing rep- resentative residue extractions and in preventing damage, destruction or loss of residue. [less ▲]

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See detailThe French Reception of Leonard Cohen or How to Deal with Cultural Hybridity ?
Mus, Francis ULg

Conference (2017, April 14)

Writer-musicians in translation, or how to deal with artistic hybridity? The case of Leonard Cohen. Amazon.com is just one of the many websites that has a separate category for writer-musicians in its ... [more ▼]

Writer-musicians in translation, or how to deal with artistic hybridity? The case of Leonard Cohen. Amazon.com is just one of the many websites that has a separate category for writer-musicians in its books section: singers who are also authors – or vice versa. Leonard Cohen, Patti Smith, Ry Cooder, Nick Cave and Bob Dylan are just a few examples, and while they tend to be known and recognised as musicians, their literary works are generally well-received and translated into a number of languages. To what extent are the different mediums treated differently; are separate translation strategies employed; do literary and musical institutions elbow each other out the way when it comes to the reception and creation of a translation? Leonard Cohen is an example par excellence. France saw not only his (complete) literary works translated into French, but also many of his albums. That is notable, as Susam-Saraeva has previously argued that popular music is generally not translated. Using a discourse analysis of reviews and critical writings on Cohen in the French media (Rock et Folk, Pop Music, Extra, etc.) from the early 1970 (which was when his career as a singer truly skyrocketed in France and the rest of Western Europe), I will determine which arguments were used to justify both the initiative to translate his work as well as the various translation strategies (Franzon 2008). This line of argumentation is then compared with a number of other translations. For some songs – which were often first released as poems – there were even different translations in circulation. Secondly, I shall compare these findings to a more recent body of work – the reception and translation of his collection of poems, Book of Longing (2006) [Le Livre du Désir] and the album Ten New Songs (2001). The album was a compilation of a selection of poems from Book of Longing that Cohen set to music. In France all the lyrics were translated and included on the album’s insert. Using this quasi-simultaneous double-translation, I shall assess how the same text was translated and received in the musical and literary systems (in France) and whether the politics of translation with respect to Cohen’s work has changed over the years. [less ▲]

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See detailLiver microbiome of Peromyscus leucopus, a key reservoir host species for emerging infectious diseases in North America
André, Adrien ULg; Mouton, Alice ULg; millien, virginie et al

in Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics of Infectious Diseases (2017)

Microbiome studies generally focus on the gut microbiome, which is composed of a large proportion of commensal bacteria. Here we propose a first analysis of the liver microbiomeusing next generation ... [more ▼]

Microbiome studies generally focus on the gut microbiome, which is composed of a large proportion of commensal bacteria. Here we propose a first analysis of the liver microbiomeusing next generation sequencing as a tool to detect potentially pathogenic strains. We used Peromyscus leucopus, the main reservoir host species of Lyme disease in eastern North America, as a model and sequenced V5-V6 regions of the 16S gene from 18 populations in southern Quebec (Canada). The Lactobacillus genus was found to dominate the liver microbiome.We also detected a large proportion of individuals infected by Bartonella vinsonii arupensis, a human pathogenic bacteria responsible for endocarditis, aswell as Borrelia burgdorferi, the pathogen responsible for Lyme disease in North America. We then compared the microbiomes among two P. leucopus genetic clusters occurring on either side of the St. Lawrence River, and did not detect any effect of the host genotype on their liver microbiome assemblage. Finally, we report, for the first time, the presence of B. burgdorferi in a smallmammal host fromthe northern side of the St. Lawrence River, in support of models that have predicted the northern spread of Lyme disease in Canada. [less ▲]

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See detailEnergy assessment of suburban neighborhoods : insights from Wallonia and perspectives for a suburban renewal
Marique, Anne-Françoise ULg

Conference (2017, April 12)

The aim of the paper is to present a method to assess the energy efficiency of suburban areas, taking into account both energy efficiency of buildings and the impacts of location and urban form on the ... [more ▼]

The aim of the paper is to present a method to assess the energy efficiency of suburban areas, taking into account both energy efficiency of buildings and the impacts of location and urban form on the energy balance of suburban areas. The method is applied to the Walloon region of Belgium and perspectives for a sustainable suburban renewal are proposed. [less ▲]

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See detailComputerized adaptive testing: Principles, issues and implementation
Magis, David ULg

Scientific conference (2017, April 07)

Computerized adaptive testing (CAT) has become an important field of research for educational and psychological measurement. It provides tailored testing at the test taker level, focusing on the optimal ... [more ▼]

Computerized adaptive testing (CAT) has become an important field of research for educational and psychological measurement. It provides tailored testing at the test taker level, focusing on the optimal administration of the items to improve accuracy and precision in individual ability estimation. Yet, practical implementation of CAT programs are still demanding both in terms of item bank creation and calibration, and require appropriate online platforms and suitable algorithms for underlying psychometric computations. The purpose of this workshop is twofold: (a) to briefly introduce the concepts of item response theory (IRT) and CAT in a practical, end-user approach; (b) to present a package of the R software, called catR, that performs all underlying IRT- and CAT-related calculations. This package is also adequate to perform simulation studies, which are most useful to assess the quality of an item and help in designing efficient CATs. Some live demonstrations of catR will be proposed to conclude the workshop. participants are invited to bring their laptops with R and RStudio software pre-installed. Electronic copies of the presentation and an R script with the code for illustrative examples will be provided. [less ▲]

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See detailSignification et notification en Europe Entre efficacité et droits de la défense
Wautelet, Patrick ULg

Conference (2017, April)

Cette présentation a comme objectif d'offrir un aperçu de la jurisprudence de la Cour de justice relative au Règlement 1393/2007

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