Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailSensitivity of the annual net ecosystem exchange to the cospectral model used for high frequency loss corrections at a grazed grassland site
Mamadou, Ossenatou; Gourlez de la Motte, Louis ULg; De Ligne, Anne ULg et al

in Agricultural and Forest Meteorology (2016), 228-229

Detailed reference viewed: 30 (5 ULg)
See detailLe journal des apprentissages : écrire et interagir pour mieux apprendre
Scheepers, Caroline ULg

Conference given outside the academic context (2016)

La formation est destinée aux enseignants du cycle 2 qui travaillent dans les établissements classés ZEP de Sarcelles. Elle vise à leur expliciter les fondements et modalités du journal des apprentissages ... [more ▼]

La formation est destinée aux enseignants du cycle 2 qui travaillent dans les établissements classés ZEP de Sarcelles. Elle vise à leur expliciter les fondements et modalités du journal des apprentissages que tiennent des élèves de primaire ou de secondaire. [less ▲]

Detailed reference viewed: 21 (1 ULg)
See detailFaut-il enseigner l'histoire de manière plus classique ?
Jadoulle, Jean-Louis ULg

Article for general public (2016)

Detailed reference viewed: 15 (0 ULg)
Full Text
See detailLe théorème fondamental comme pierre de touche de l'enseignement et de l'apprentissage de l'analyse au secondaire
Balhan, Kevin ULg

Doctoral thesis (2016)

Using the Anthropological Theory of Didactics and the Theory of Didactic Situations, this thesis brings an answer to several questions of learning the fundamental theorem of the analysis and shows that ... [more ▼]

Using the Anthropological Theory of Didactics and the Theory of Didactic Situations, this thesis brings an answer to several questions of learning the fundamental theorem of the analysis and shows that what prevents to understand it is significant of dysfunctions of the teaching of the analysis at the secondary level in French-speaking Belgium. [less ▲]

Detailed reference viewed: 28 (7 ULg)
See detailLe dossier patient en psychologie clinique : Aspects juridiques, éthiques et déontologiques
Blavier, Adelaïde ULg

Scientific conference (2016, November 15)

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailA crucial role for cdk1 in postnatal hippocampal neurogenesis
Marlier, Quentin ULg

Poster (2016, November 15)

Cdk1 seems to be involved in the proliferation and differentiation of adult neural stem cells found in the adult dentate gyrus

Detailed reference viewed: 16 (4 ULg)
See detailActor-Network Theory’s perspectives for musicology
Levaux, Christophe ULg

Conference (2016, November 15)

Detailed reference viewed: 19 (1 ULg)
Full Text
See detailCarbon balance of an intensively grazed grassland in southern Belgium
Gourlez de la Motte, Louis ULg; Jérôme, Elisabeth; Mamadou, Ossénatou et al

in Agricultural and Forest Meteorology (2016), 228-229

Detailed reference viewed: 24 (9 ULg)
Full Text
See detailThe multi-messenger approach to particle acceleration by massive stars: a science case for optical, radio and X-ray observatories
De Becker, Michaël ULg

Scientific conference (2016, November 15)

Massive stars are extreme stellar objects whose properties allow for the study of some interesting physical processes, including particle acceleration up to relativistic velocities. In particular, the ... [more ▼]

Massive stars are extreme stellar objects whose properties allow for the study of some interesting physical processes, including particle acceleration up to relativistic velocities. In particular, the collisions of massive star winds in binary systems lead notably to acceleration of electrons involved in synchrotron emission, responsible for their identification as non-thermal radio emitters. This has been demonstrated for about 40 objects so far. The relativistic electrons are also expected to produce non-thermal high-energy radiation through inverse Compton scattering. This class of objects permits thus to investigate non-thermal physics through observations in the radio and high energy spectral domains. However, the binary nature of these sources introduces some stringent requirements to adequately interpret their behaviour and model non-thermal processes. In particular, these objects are well-established variable stellar sources on the orbital time-scale. The stellar and orbital parameters need to be determined, and this is notably achieved through studies in the optical domain. The combination of observations in the visible domain (including e.g. 3.6-m DOT) with radio measurements using GMRT and X-ray observations constitutes thus a promising strategy to investigate particle-accelerating colliding-wind binaries in the forthcoming decade. [less ▲]

Detailed reference viewed: 8 (1 ULg)
See detailBurgerwetenschap na Fukushima
Van Oudheusden, Michiel ULg

Conference (2016, November 14)

Detailed reference viewed: 10 (0 ULg)
Full Text
See detailFragmentation politico-administrative des régions intermédiaires en Europe
Breuer, Christophe ULg

Scientific conference (2016, November 14)

Analyse européenne de la fragmentation politico-administrative locale des régions urbaines intermédiaire : objectifs, méthodologie, indicateurs de fragmentation, lien entre ces indicateurs et le contexte ... [more ▼]

Analyse européenne de la fragmentation politico-administrative locale des régions urbaines intermédiaire : objectifs, méthodologie, indicateurs de fragmentation, lien entre ces indicateurs et le contexte territorial. [less ▲]

Detailed reference viewed: 15 (4 ULg)
See detailTouch of Evil - Touch of Neo-noir. Du film noir hollywoodien au néo-noir contemporain.
Tomasovic, Dick ULg

Scientific conference (2016, November 14)

Cette conférence interroge les présupposés esthétiques et idéologiques qui ont fondé la catégorie du néo-noir dans le cinéma hollywoodien des dernières décennies.

Detailed reference viewed: 12 (0 ULg)
Full Text
See detailLe soutien fiscal à la propriété-occupation à la lumière du cas belge
Xhignesse, Guillaume ULg

Scientific conference (2016, November 14)

Detailed reference viewed: 22 (8 ULg)
Full Text
See detailStudying the genetics of Mendelian and complex traits with high-throughput genotyping and sequencing in cattle
Li, Wanbo ULg

Doctoral thesis (2016)

Background For decades, identifying genes and mutations underlying inherited diseases and economically import traits has been at the core of genetic studies in domestic animals. The initial arduous task ... [more ▼]

Background For decades, identifying genes and mutations underlying inherited diseases and economically import traits has been at the core of genetic studies in domestic animals. The initial arduous task of gene mapping with microsatellites or low-density SNP panels was then followed by a often fruitless and tedious attempt to isolate the causative mutations for both monogenic and polygenic traits. The availability of high-density SNP arrays considerably accelerated the gene mapping process. More recently, advances in second-generation high-throughput sequencing (HTS) including whole genome, exome, and RNA sequencing have brought tremendous efficiency into dissecting the genetic underpinnings of phenotypes of interest. In this thesis, we describe the use of these new technologies to decipher the genetic basis of several monogenic and polygenic traits, in both forward and reverse genetic settings. Results We first describe the use of medium-density SNP arrays to dissect genetic basis of a monogenic disease (Crooked Tail Syndrome, CTS), as well as of complex phenotypes related to meiotic recombination in cattle. With regards to CTS, we first demonstrate that a common 2bp-deletion in the MRC2 gene causes the condition in Belgian Blue cattle (BBC), and that the frequency of the condition is due to a pleiotropic effect of the mutation on muscle mass. We discover a second loss-of-function mutation in the same gene MRC2, supporting the hypothesis of pleiotropy and balancing selection. With regards to recombination, we report that genetic variants in REC8 and RNF212 affect the genome-wide recombination rate in cattle. The RNF212 gene has also been shown to be associated with genome-wide recombination rate in humans, however REC8 is not supported as a candidate gene by newer data. We also demonstrated that several variants in the zinc-finger domain of a gonosomal PRDM9 paralogue influence hotspot usage in cattle, reminiscent of previous findings in human and mice. The subsequent application of HTS technology in forward genetic analyses, allowed us to identify: i) an intronic mutation in the PIGH gene that causes the skipping of exon 2, and is the cause of arthrogryposis in BBC, ii) a 3.3 kb deletion removing exons 25-27 of the FANCI gene, that causes brachyspina in Holstein-Friesian cattle. We finally used a reverse genetic approach to identify embryonic lethal (EL) mutations compromising fertility in beef (BBC) and dairy cattle (Holstein-Friesian and Jersey). We mined whole genome and exome sequence data from more than 500 animals for candidate embryonic lethal variants corresponding to loss-of-function (stop gain, frameshift and splice site variants) and disruptive missense variants. By doing so we demonstrate that against expectations domestic Bos taurus cattle are genetically more variable than humans including Africans, however, that their burden of disruptive variants is similar, amounting to ∼100 such variants per individual. We interpret this as resulting from more effective purifying selection in recent times as a result of increased inbreeding. We have genotyped thousands of animals for thousands of EL candidates, and estimate – from the observed depletion in homozygotes - that no more ∼15% of those are developmentally essential. We do not find evidence for synthetic epistasis between candidate EL mutations. By evaluating the departure from Mendelian expectations in matings between carrier sires and dams, we unambiguously demonstrate the embryonic lethal nature of nine relatively common candidate EL variants. All of them affect genes that are involved in basic cellular processes. We demonstrate that only one of these would have been detected using the haplotype-based approach that were applied thus far. The established list of loss-of-function variants is being mined for putative non-lethal, yet major phenotypic effects of medical relevance. Among these, we uncovered a 10-bp deletion in the MLPH gene, which results a premature stop codon, that causes diluted color – ‘cool gray’ – in BBC. Conclusions and Perspectives Due to the intensive use of some elite sires by means of artificial insemination in cattle, several outbursts of genetic defects have been observed in recent years. We herein demonstrate that uncovering the genetic basis of such Mendelian disorders can be very effective when integrating high-throughput genotyping and sequencing technology. Fertility in cattle and other domestic animals has declined over the last decades. Our discovery of a number of embryonic lethal variants segregating in cattle provide a complementary explanation for the decline in fertility, in addition to the theory of negative energy balance of high producing cows. The reverse genetic approach we developed for screening EL variants has at least two advantages. First, our approach also works in small sized populations. Second, our approach has higher sensitivity than the haplotype-based approach. It has been suspected for some time that most of the variants underlying complex traits map to noncoding regions. Deciphering the functional consequence of these regulatory variants has proven challenging. The ENCODE projects in human and mice provide good examples of how high-throughput functional assays based on NGS technology may enhance our knowledge of the non-coding regions of the genome. It is reasonable to anticipate that the release of ENCODE-like data in the animal research field will assist in the discovery of the genetic basis of complex traits at an unprecedented pace. [less ▲]

Detailed reference viewed: 29 (7 ULg)
Full Text
Peer Reviewed
See detailSoutenir le développement langagier en maternelle : Développement d’un outil d’observation et de soutien pour les enseignant.e.s en Belgique francophone
Bergeron-Morin, Lisandre ULg; Leroy, Sandrine ULg; Maillart, Christelle ULg

Conference (2016, November 14)

Les effets positifs des contextes éducatifs préscolaires sur le développement langagier des en-fants et par conséquent sur leur réussite éducative subséquente sont maintenant reconnus, particulièrement ... [more ▼]

Les effets positifs des contextes éducatifs préscolaires sur le développement langagier des en-fants et par conséquent sur leur réussite éducative subséquente sont maintenant reconnus, particulièrement auprès des enfants provenant de milieux vulnérables sur le plan socio-économique (Dickinson, 2011). En effet, les enfants ont l’occasion d’y expérimenter de façon quotidienne des interactions riches et diversifiées avec les enseignant.es, susceptibles d’étayer leur langage (Pence et al., 2008). Or, la qualité du soutien au développement langagier offert, qui dépend entre autres de la capacité de l’enseignante à observer et à ainsi s’adapter au niveau de développement langagier de chaque enfant, est très hétérogène d’une groupe à l’autre (Bou-chard et al., 2010; Girolametto et al., 2002). En Belgique francophone, où l’orthophonie dite préventive est encore peu développée, les ensei-gnantes de maternelle font état d’un manque d’outils et de connaissances pour observer le déve-loppement langagier des enfants. L’outil SOLEM (Soutenir et Observer le Langage des Enfants en Maternelle) a été développé pour répondre à ce besoin. MÉTHODE Quatre groupes nominaux ont été réalisés auprès de 39 enseignants, agents psycho-médico-sociaux et directions d’écoles afin d’identifier leurs besoins. Un prototype de l’outil d’observation a été développé et mis à l’essai dans 10 classes pilotes, afin d’en valider la forme et le contenu. 4 enfants par groupe ont été évalué de façon parallèle avec l’Évaluation du Langage Oral (ELO), afin de faire état de la validité concurrente de l’outil SOLEM. RÉSULTATS SOLEM a été développé à partir de constats issus des groupes nominaux : accorder de l’importance aux aspects moins formels du langage, avoir une démarche en arborescence adap-tée à chaque enfant, qui mène à des pistes d’actions adaptées. Les premières mises à l’essai semblent confirmer que SOLEM répond au besoin exprimé par les enseignants.es : identifier les enfants qui ont besoin d’un soutien spécifique sur le plan du développement langagier et obser-ver leur communication pour y ajuster le soutien offert. Les résultats permettent d’aborder une réflexion sur comment l’observation du développement langagier des enfants par l’enseignant.e peut introduire la mise en place de pratiques de soutien aux habiletés langagières dans les groupes de maternelle. [less ▲]

Detailed reference viewed: 36 (3 ULg)
Peer Reviewed
See detailEvaluation of adaptive facades: Case study, Al Bahar Towers, UAE
Attia, Shady ULg

in Amato, Alex (Ed.) TOGETHER LET’S BUILD A SUSTAINABLE FUTURE (2016, November 13)

The assessment of adaptive facades presents a barrier in light of the fact that there is no settled assessment technique se to systematically reach this goal. Many of the available façade performance ... [more ▼]

The assessment of adaptive facades presents a barrier in light of the fact that there is no settled assessment technique se to systematically reach this goal. Many of the available façade performance evaluation systems or frameworks have restricted applicability for such advanced building facades. The complexity of adaptive or dynamic facades evaluation is related to the performance evaluation of façade elements, systems and overall building performance coupled to occupant behavior and occupant satisfaction. In this context, we present\s a case study for an adaptive sunscreens façade and evaluate its performance and occupant behavior. The evaluation focuses mainly on pre and post construction phase of adaptive facades: The design assist phase (including the durability test, visual mockup, onsite mashrabiya mounting and weather stripping), the commissioning phase (field verification and performance testing) and the monitoring phase. The selected project is a 150 meters high twin tower that stands with honey-comb inspired structure and automated dynamic solar screen that responds to the sun’s movement. These solar screens respond dynamically and automatically to the angle of the sun which improves the control over energy consumption, solar radiation and glare with the ability to admit natural light into the building. The paper is part of the research activities of working group 3 of the European COST Action 1403 on “Adaptive Facades “. Different methods were used for evaluation, this include: interviews with the architect and façade engineer and technical control specialist, occupants, reviews of standard and codes, review of energy models and a systematic design process mapping. A documentation of the case study describing the post construction occupant comfort, and façade operation was prepared. This paper’s audience is mainly project managers, architects, building façade engineers together with facility managers concerned with the process of design, construction and operation of adaptive sunscreens facades. The outcome of this study identifies quantifiable performance indicators and effective strategies for the design and performance evaluation of optimal adaptive facades. [less ▲]

Detailed reference viewed: 77 (5 ULg)
Full Text
See detailThe freedom to receive trade union services: a stepping stone for worker protection in the EU internal market?
Van Cleynenbreugel, Pieter ULg

Scientific conference (2016, November 12)

This conference paper/presentation explores to what extent workers can receive trade union services in a cross border context and how this possibility can be used as a starting point for a better tailored ... [more ▼]

This conference paper/presentation explores to what extent workers can receive trade union services in a cross border context and how this possibility can be used as a starting point for a better tailored reflection on the future of harmonised worker protection across the European Union. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Peer Reviewed
See detailLa pollution atmosphérique enregistrée dans les stalagmites de Han-sur-Lesse
Allan, Mohammed ULg; Fagel, Nathalie ULg; Verheyden, sophie

Conference (2016, November 12)

Les spéléothèmes sont maintenant considérées comme précieuses archives climatiques et environnementales sur les continents, offrant un certain nombre d'avantages par rapport à d'autres archives ... [more ▼]

Les spéléothèmes sont maintenant considérées comme précieuses archives climatiques et environnementales sur les continents, offrant un certain nombre d'avantages par rapport à d'autres archives continentales (les sédiments lacustres, les carottes de glace….). Cette archive peut être aisément datables (U/Th, comptage de lamines et 14C), et présentent une haute résolution temporelle (décennale à saisonnière). Cependant, leur potentiel pour l'enregistrement de la pollution de l'environnement est largement inexploré et principalement axé sur la quantification des contributions d'aérosols dans des grottes touristiques. Cette étude est un des premières études qui utilise les spéléothèmes pour retracer la pollution atmosphérique. Basé sur deux spéléothèmes collectées dans la grotte de Han-sur-Lesse (S-Belgique), ce travail a deux objectifs : 1) le premier est de quantifier la concentration du Pb pour la dernière 250 ans, 2) le second objectif est de définir les sources anthropiques prédominantes de Pb en utilisant les rapports isotopiques du Pb et en basant sur les comparaisons avec les données historiques des activités anthropogéniques en Europe et la Belgique. Les concentrations en éléments traces (Al et Pb) (mesurées par LA-ICP-MS et ICP-MS) et les rapports isotopiques du Pb (mesurées par MC-ICP-MS) permettent d'identifier trois intervalles caractérisés par un enrichissement particulier en Pb : de 1880 à 1905 AD, de 1945 à 1965 AD, et de 1975 à 1990 AD. Les spéléothèmes montrent des changements similaires au niveau historique de la pollution atmosphérique connu en Belgique. Les rapports isotopiques du Pb distinguent clairement les sources de Pb et confirment que le charbon et la combustion de l'essence combinée avec des activités métallurgiques régionales étaient les sources prédominantes de la pollution au cours des 250 dernières années. Cette étude met l'accent sur la capacité des spéléothèmes d’enregistrer la pollution atmosphérique. [less ▲]

Detailed reference viewed: 20 (6 ULg)