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See detailDe beklemtoning van samenstellingen in de tussentaal van Franstalige leerders van het Nederlands uit het immersie- en niet-immersieonderwijs
Bui-Anh, Vu ULg; Jouniaux, Anthony; Hiligsmann, Philippe et al

in n/f (2014), 12

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See detailLa place des savoirs dans l'approche par compétences
Simons, Germain ULg

in Education & Formation (2014), e-302

Ce texte est une mise en perspective de l'axe 1 du n° e-302 de la revue Education & Formation consacré à la publication des actes du colloque d'ABC-Educ (octobre 2013).

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See detailComposantes métacognitives ; Définitions et outils d’évaluation
Frenkel, Stéphanie ULg

in Enfance : Psychologie, Pédagogie, Neuropsychiatrie, Sociologie (2014), 4

Many tools have been developed since the 1970s in order to assess metacognition and its first implementations. Over time, questionnaires, tests, interviews, observations, computer programmes, and other ... [more ▼]

Many tools have been developed since the 1970s in order to assess metacognition and its first implementations. Over time, questionnaires, tests, interviews, observations, computer programmes, and other methods have become more and more based on self-regulated learning theories. At the same time, for the last fifteen years or so, the number of students with learning difficulties linked to the way they learn seems to be increasing slowly but steadily. Therefore, it seems essential to enable these learners develop a more efficient learning behaviour. Similarly, we see that professional field workers are increasingly asking for efficient and adapted tools in this field. The purpose of this paper is twofold: it provides a review of the above-mentioned assessment tools, and it discusses them in order to contribute to the creation of new tools with a wider scope. Following an analysis of the abundant literature on the subject, two classifications were developed. Thirty-five tools were kept and categorised: first, according to a developmental perspective (preschool, primary school, secondary school and/or adult), second, according to the metacognitive component they assess (metacognitive knowledge, strategies and/or experiences). However, no existing tool covers the whole period of compulsory education. Moreover, in order to assess the learners’ metacognitive abilities fully, it is necessary to combine online and offline assessments in concrete situations. There are still some needs to be met in this regard. [less ▲]

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See detailChanges in cerebral metabolism in patients with a minimally conscious state responding to zolpidem.
Chatelle, Camille ULg; Thibaut, Aurore ULg; Gosseries, Olivia ULg et al

in Frontiers in Neuroscience (2014)

Background:Zolpidem,ashort-actingnon-benzodiazepineGABAagonisthypnotic,hasbeenshowntoinduceparadoxicalresponsesinsomepatientswithdisordersofconsciousness(DOC ... [more ▼]

Background:Zolpidem,ashort-actingnon-benzodiazepineGABAagonisthypnotic,hasbeenshowntoinduceparadoxicalresponsesinsomepatientswithdisordersofconsciousness(DOC),leadingtorecoveryofarousalandcognitiveabilities.Wehereassessedzolpidem-inducedchangesinregionalbrainmetabolisminthreepatientswithknownzolpidemresponseinchronicpost-anoxicminimallyconsciousstate(MCS).Methods:[18F]-fluorodeoxyglucosepositronemissiontomography(FDG-PET)andstandardizedclinicalassessmentsusingtheComaRecoveryScale-Revisedwereperformedafteradministrationof10mgzolpidemorplaceboinarandomizeddoubleblind2-dayprotocol.PETdatapreprocessingandcomparisonwithahealthyage-matchedcontrolgroupwereperformedusingstatisticalparametricmapping(SPM8).Results:Behaviorally,allpatientsrecoveredfunctionalcommunicationafteradministrationofzolpidem(i.e.,emergencefromtheMCS).FDG-PETshowedincreasedmetabolismindorsolateralprefrontalandmesiofrontalcorticesafterzolpidembutnotafterplaceboadministration.Conclusion:Ourdatashowametabolicactivationofprefrontalareas,corroboratingtheproposedmesocircuithypothesistoexplaintheparadoxicaleffectofzolpidemobservedinsomepatientswithDOC.ItalsosuggeststhekeyroleoftheprefrontalcorticesintherecoveryoffunctionalcommunicationandobjectuseinhypoxicpatientswithchronicMCS. [less ▲]

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See detailOmniscientis project-final report
Omniscientis, partenaires; Romain, Anne-Claude ULg

Conference (2014, December)

The EU-funded 'Odour monitoring and information system based on citizen and technology innovative sensors' (http://www.omniscientis.eu/, OMNISCIENTIS) project has made significant inroads in this regard ... [more ▼]

The EU-funded 'Odour monitoring and information system based on citizen and technology innovative sensors' (http://www.omniscientis.eu/, OMNISCIENTIS) project has made significant inroads in this regard with the aim of mitigating odour annoyance. To begin with, documents were developed describing the desired specifications for odour measurement, dispersion modelling and information technologies. In parallel, the needs and expectations of all stakeholders, including citizens, regulatory authorities and industrial bodies, were taken into consideration. Citizens' feedback on odour acceptability levels were gathered through smartphones and using the living lab approach. They were further combined with measurements from e-nose and odour dispersion models. Project members developed an Odour Information System that produces validated monitoring statistics and impact levels for local authorities to support environment-related decision-making and for citizens to give them feedback on their complaints. A mobile application is also available, used by citizens to perform odour related observations. Over 5000 observations were sent until now. Besides, two in-situ e-nose sensors and a meteorological station were installed and calibrated in the industrial site in Belgium, serving as pilot. Further 18 industrial parameters are collected in real time and 15 odour field surveys have been performed to understand odour sources and characteristics. The e-nose technology was optimised through tests and improvements to better understand relevant odour parameters at the second pilot site, a pig farm in Austria. Researchers adapted the GRAL-System pollutant dispersion model to develop a fast odour dispersion modelling system using harmonised real-time meteorological data and industrial emission measurements. It was validated with the odour emission rates, olfactometry campaigns and citizens observations. Most of the GRAL-solver components were implemented in Cuda with a speed improved by a factor superior of 100. Project activities were disseminated via project website and factsheets, 3 scientific papers, 13 international conferences and 3 user workshops involving selected citizens, technicians and authorities. Local environmental governance was enhanced through citizen empowerment via monthly meetings and specific methodologies. Better and timely feedback on undesirable odours arising from certain emissions will help in setting evidence-based acceptable odour limits. Ultimately, a particular attention have been addressed by all partners and in particular by involved SMEs in order to ensure the exploitation of the results and enabling the identification of concrete commercial opportunities that may be pursued after the project. [less ▲]

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See detailAbout the Uniform Hölder Continuity of Generalized Riemann Function
Bastin, Françoise ULg; Nicolay, Samuel ULg; Simons, Laurent ULg

in Mediterranean Journal of Mathematics (2014)

In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~$R_{\alpha,\beta}$ (with $\alpha>1$ and $\beta>0$) defined by \[ R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac ... [more ▼]

In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~$R_{\alpha,\beta}$ (with $\alpha>1$ and $\beta>0$) defined by \[ R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac{\sin(\pi n^\beta x)}{n^\alpha},\quad x\in\mathbb{R}, \] using its continuous wavelet transform. In particular, we show that the exponent we find is optimal. We also analyse the behaviour of~$R_{\alpha,\beta}$ as $\beta$ tends to infinity. [less ▲]

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See detailIndex de los conceptos de IDEAS e INNOVACIONES
Leclercq, Dieudonné ULg; Cabrera

in Leclercq, Dieudonné (Ed.) IDEAS : Innovaciones en Dispositivos de Evaluacion de los Aprendizajes en la ensenanza Superior (2014)

Index of concepts in the 23 chapters of the book

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See detailLes solutions humaines. Victor Serge dans le XXe siècle
Cavazzini, Andrea ULg

in Cahiers du GRM (2014)

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See detailSchistosoma mansoni egg-induced inflammation inhibits γ-herpesvirus replication
Dougall, Annette ULg; Rolot, Marion ULg; Vanderplasschen, Alain ULg et al

Poster (2014, December)

Geographically, S. mansoni overlaps with human γ-herpesvirus infections such as Kaposi’s sarcoma-associated herpesvirus. The strongly regulated Th2-type immune response generated during infection by S ... [more ▼]

Geographically, S. mansoni overlaps with human γ-herpesvirus infections such as Kaposi’s sarcoma-associated herpesvirus. The strongly regulated Th2-type immune response generated during infection by S. mansoni may jeopardize or improve the host’s ability to generate effective immunity against co-infecting pathogens, such as viruses. Here, we have trialled two approaches using murine herpesvirus-4 (MuHV-4). The first used a S. mansoni egg model to induce lung granulomas followed by intranasal infection with the MuHV-4-luc+ recombinant virus. Alternatively, we naturally infected mice with S. mansoni cercariae to induce a systemic Th2-type response and granulomas in the liver and intestine before intranasal MuHV-4-luc+ infection. We observed in both models a significant reduction of MuHV-4 replication in the lungs at day 5 and 7 pi associated with reduced weight loss caused by MuHV-4 infection. These results indicate that helminth induce Th2-type responses could inhibit and protect against viral infection. [less ▲]

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See detailThree sub-Jupiter-mass planets: WASP-69b & WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary
Anderson, D. R.; Collier Cameron, A.; Delrez, Laetitia ULg et al

in Monthly Notices of the Royal Astronomical Society (2014), 445(2),

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ˜ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3 ... [more ▼]

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ˜ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3.868-d period around an active, ˜1-Gyr, mid-K dwarf. ROSAT detected X-rays 60±27 arcsec from WASP-69. If the star is the source then the planet could be undergoing mass-loss at a rate of ˜1012 g s-1. This is one to two orders of magnitude higher than the evaporation rate estimated for HD 209458b and HD 189733b, both of which have exhibited anomalously large Lyman alpha absorption during transit. WASP-70Ab is a sub-Jupiter-mass planet (0.59 MJup, 1.16 RJup) in a 3.713-d orbit around the primary of a spatially resolved, 9-10-Gyr, G4+K3 binary, with a separation of 3.3 arcsec (>=800 au). WASP-84b is a sub-Jupiter-mass planet (0.69 MJup, 0.94 RJup) in an 8.523-d orbit around an active, ˜1-Gyr, early-K dwarf. Of the transiting planets discovered from the ground to date, WASP-84b has the third-longest period. For the active stars WASP-69 and WASP-84, we pre-whitened the radial velocities using a low-order harmonic series. We found that this reduced the residual scatter more than did the oft-used method of pre-whitening with a fit between residual radial velocity and bisector span. The system parameters were essentially unaffected by pre-whitening. [less ▲]

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See detailPlasma riche en plaquettes et tendinopathies
KAUX, Jean-François ULg; Crielaard, Jean-Michel ULg

in Ortho-Rhumato (2014), 12(6), 35-39

Certaines tendinopathies présentent une évolution désespérément chronique malgré l’instauration d’un traitement conservateur bien conduit. Diverses études soulignent les propriétés réparatrices des ... [more ▼]

Certaines tendinopathies présentent une évolution désespérément chronique malgré l’instauration d’un traitement conservateur bien conduit. Diverses études soulignent les propriétés réparatrices des plaquettes qui pourraient accélérer la cicatrisation de différents tissus. Le plasma riche en plaquettes (platelet-rich plasma ou PRP) représenterait une thérapeutique d’avenir. Les plaquettes libéraient, lors de leur dégranulation, divers facteurs de croissance. Ceux-ci favoriseraient la cicatrisation tendineuse. Actuellement, les effets du PRP restent toujours discutés voire controversés : les résultats cliniques sont parfois contradictoires même si son efficacité in vitro et sur animal apparait plus franche. Cette variabilité pourrait s’expliquer par l’absence de consensus relatif au mode de préparation du PRP, à la concentration plaquettaire, à la présence ou non de leucocytes, à la technique d’infiltration et au protocole post-infiltration. [less ▲]

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See detailPolysaccharide-coated PCL nanofibers for wound dressing applications
Croisier, Florence ULg; Atanasova, Ganka; Poumay, Yves et al

in Advanced Healthcare Materials (2014), 3(12), 2032-2039

Polysaccharide-based nanofibers with amultilayered structure are prepared by combining electrospinning (ESP) and layer-by-layer (LBL) deposition techniques. Charged nanofibers are firstly prepared by ... [more ▼]

Polysaccharide-based nanofibers with amultilayered structure are prepared by combining electrospinning (ESP) and layer-by-layer (LBL) deposition techniques. Charged nanofibers are firstly prepared by electrospinning poly(ε-caprolactone) (PCL) with a block-copolymer bearing carboxylic acid functions. After deprotonation of the acid groups, the layer-by-layer deposition of polyelectrolyte polysaccharides, notably chitosan and hyaluronic acid, is used to coat the electrospun fibers. A multilayered structure is achieved by alternating the deposition of the positively charged chitosan with the deposition of a negatively charged polyelectrolyte. The construction of this multi-layered structure is followed by Zeta potential measurements, and confirmed by observation of hollow nanofibers resulting from the dissolution of the PCL core in a selective solvent. These novel polysaccharide-coated PCL fiber mats remarkably combine the mechanical resistance typical of the core material (PCL) – particularly in the hydrated state –, with the surface properties of chitosan. The control of the nanofiber structure offered by the electrospinning technology, makes the developed process very promising to precisely design biomaterials for tissue engineering. Preliminary cell culture tests corroborate the potential use of such system in wound healing applications. [less ▲]

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See detailUsing approximate dynamic programming for estimating the revenues of a hydrogen-based high-capacity storage device
François-Lavet, Vincent ULg; Fonteneau, Raphaël ULg; Ernst, Damien ULg

in IEEE Symposium Series on Computational Intelligence (2014)

This paper proposes a methodology to estimate the maximum revenue that can be generated by a company that operates a high-capacity storage device to buy or sell electricity on the day-ahead electricity ... [more ▼]

This paper proposes a methodology to estimate the maximum revenue that can be generated by a company that operates a high-capacity storage device to buy or sell electricity on the day-ahead electricity market. The methodology exploits the Dynamic Programming (DP) principle and is specified for hydrogen-based storage devices that use electrolysis to produce hydrogen and fuel cells to generate electricity from hydrogen. Experimental results are generated using historical data of energy prices on the Belgian market. They show how the storage capacity and other parameters of the storage device influence the optimal revenue. The main conclusion drawn from the experiments is that it may be advisable to invest in large storage tanks to exploit the inter-seasonal price fluctuations of electricity. [less ▲]

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See detailExperimental validation of a thermal model of a LOx flooded ball bearing
Servais, Christophe ULg; Bozet, Jean-Luc ULg; Kreit, Patrick ULg et al

in Tribology International (2014), 80

Ball bearings of turbopumps of rocket engines work in very singular conditions; they are flooded into liquid oxygen or liquid hydrogen. Therefore, the use of any conventional lubricants (oil or grease) is ... [more ▼]

Ball bearings of turbopumps of rocket engines work in very singular conditions; they are flooded into liquid oxygen or liquid hydrogen. Therefore, the use of any conventional lubricants (oil or grease) is prescribed. Although cryogenic fluids can cool this kind of ball bearing, they cannot separate the surfaces in contact. As a result, there is a significant increase in frictional power losses. This paper presents tests performed on a cryotechnic ball bearing flooded in liquid oxygen. The test results showed that beyond a critical loading of the bearing, a sudden increase in temperature occurred. A thermal model is also put forward, in order to understand and anticipate especially the thermal instability described above. [less ▲]

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See detailLe roman pour la jeunesse: un roman éducatif qui ne dit jamais son nom
Delbrassine, Daniel ULg

in Van Beveren, Julien (Ed.) Littérature, langue et didactique. Hommages à Jean-Louis Dumortier (2014)

Démonstration du caractère éducatif du roman pour la jeunesse actuel: à travers des procédés implicites typiques du roman moderne, les auteurs continuent de dispenser un message aux lecteurs.

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See detailSustainable Chemistry
Gillet, Sébastien ULg; Jacquet, Nicolas ULg; Richel, Aurore ULg

Learning material (2014)

1) Petrochemical and concept of biorefineries. 2) Biomass and biorefineries, 1st generation 3) Biomass and biorefineries, second generation 4) Green Chemistry and Green Engineering

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See detailExplaining the CMS Higgs lepton-flavor violating
Aristizabal Sierra, Diego ULg; Vicente, Avelino ULg

in Physical Review. D : Particles and Fields (2014), 90(11), 115004

Direct searches for lepton flavor violating Higgs boson decays in the τ μ channel have been recently reported by the CMS collaboration. The results display a slight excess of signal events with a ... [more ▼]

Direct searches for lepton flavor violating Higgs boson decays in the τ μ channel have been recently reported by the CMS collaboration. The results display a slight excess of signal events with a significance of 2.5σ, which translates into a branching ratio of about 1%. By interpreting these findings as a hint for beyond the standard model physics, we show that the Type-III 2HDM is capable of reproducing such signal while at the same time satisfying vacuum stability, perturbativity, electroweak precision data, measured Higgs standard decay modes and low-energy lepton flavor violating constraints. We have found that the allowed signal strength ranges for the bb, WW* and ZZ* standard channels shrink as soon as BR(h→τμ)∼ 1% is enforced. Thus, we point out that if the excess persists, improved measurements of these channels may be used to test our Type-III 2HDM scenario. [less ▲]

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