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See detailRelative positioning with Galileo E5 AltBOC code measurements
Deprez, Cécile ULg

Conference (2016, March 03)

Depuis une dizaine d’années, l’Europe développe son propre système de positionnement par satellites (ou Global Navigation Satellites System (GNSS) en anglais), connu sous le nom de Galileo. À la pointe de ... [more ▼]

Depuis une dizaine d’années, l’Europe développe son propre système de positionnement par satellites (ou Global Navigation Satellites System (GNSS) en anglais), connu sous le nom de Galileo. À la pointe de la technologie, les horloges atomiques embarquées à bord de ses satellites ainsi que les signaux transmis par ces derniers sont extrêmement prometteurs dans beaucoup de domaines. Bien que toujours en phase de test à l’heure actuelle, ce système a déjà conduit à de premières mesures, notamment en matière de positionnement. Parmi ces nouvelles technologies, un signal en particulier semble très prometteur : Galileo E5, aussi appelé Galileo E5a+b ou encore Galileo E5 AltBOC. Ce signal permet d’effectuer des mesures de code et de phase plus précises. Il est également moins sensible au multi-trajet. Grâce à ses caractéristiques innovantes, Galileo E5 devrait permettre d’estimer des positions avec une précision supérieure à tous les autres signaux utilisés aujourd’hui. Une étude comparative des positions estimées avec les systèmes GPS (américain) et Galileo (européen) sur leurs différentes fréquences émises (GPS L1, GPS L2, GPS L5 pour GPS et Galileo E1, Galileo E5a, Galileo E5b et Galileo E5 AltBOC pour Galileo) a été menée dans ce mémoire. Pour ce faire, une combinaison d’observations appelée double différence (DD) est utilisée sous différentes configurations (ligne de base nulle (ZB), courte (SB) et moyenne (MB)) de récepteurs GNSS. Les récepteurs utilisés appartiennent à l’Université de Liège (2 récepteurs Trimble NetR9, 1 récepteur Septentrio XS et un récepteur Septentrio X4). Il ressort de cette étude que Galileo E5 AltBOC présente les observations les plus précises (en ZB, toutes sources d’erreurs éliminées). L’analyse démontre également qu’une précision de l’ordre de quelques décimètres sur la position à déterminer peut être atteinte avec les codes transmis par le signal Galileo E5, et ce jusqu’à 25 kilomètres de distance. [less ▲]

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See detailSalon de la géomatique F.I.G. 2016 - Saint-Dié
Donnay, Jean-Paul ULg

Conference (2016, March 03)

Le Festival International de la Géographique (FIG) est organisé depuis 1990 à Saint-Dié-des-Vosges. Il accueille chaque année quelque 50.000 visiteurs et rassemble tant les spécialistes internationaux et ... [more ▼]

Le Festival International de la Géographique (FIG) est organisé depuis 1990 à Saint-Dié-des-Vosges. Il accueille chaque année quelque 50.000 visiteurs et rassemble tant les spécialistes internationaux et que les simples amateurs de culture et d’animation. Conférences, débats, tables rondes, cafés géographiques, expositions, foire du livre, salon de la géomatique, films… tout dans la ville et durant 3 jours est consacré – gratuitement – à la présentation des dernières découvertes de la recherche scientifique en géographie. Chaque année, un pays invité est à l’honneur. En 2016, c’est la Belgique ; de sorte que les chercheurs, les enseignants et les entreprises publiques et privées belges sont spécialement invités à participer à cette manifestation. La présentation faite durant la journée BeGeo du 3 mars à Bruxelles aura pour but de présenter les conditions de participation et d’inviter les partenaires belges au Salon de la Géomatique organisé durant le Festival International de la Géographie du 30 septembre au 2 octobre 2016. [less ▲]

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See detailPresse et jeu vidéo
Dozo, Björn-Olav ULg; Krywicki, Boris ULg

Scientific conference (2016, March 03)

Cours sur la presse vidéoludique. Cinquième séance du cycle de conférences "Histoire et analyse des pratiques du jeu vidéo"

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See detailSomatic mosaicism underlies X-linked acrogigantism (XLAG) syndrome in sporadic male subjects
Daly, Adrian ULg; Yuan, Bo; Fina, Frederic et al

in Endocrine-Related Cancer (2016)

Somatic mosaicism has been implicated as a causative mechanism in a number of genetic and genomic disorders. X-linked acrogigantism (XLAG) syndrome is a recently characterized genomic form of pediatric ... [more ▼]

Somatic mosaicism has been implicated as a causative mechanism in a number of genetic and genomic disorders. X-linked acrogigantism (XLAG) syndrome is a recently characterized genomic form of pediatric gigantism due to aggressive pituitary tumors that is caused by submicroscopic chromosome Xq26.3 duplications that include GPR101. We studied XLAG syndrome patients (N=18) to determine if somatic mosaicism contributed to the genomic pathophysiology. Eighteen subjects with XLAG syndrome were identified with Xq26.3 duplications using high definition array comparative genome hybridization (HD-aCGH). We noted males with XLAG had a decreased log2 ratio compared with expected values, suggesting potential mosaicism, while females showed no such decrease. As compared with familial male XLAG cases, sporadic males had more marked evidence for mosaicism, with levels of Xq26.3 duplication between 16.1-53.8%. These characteristics were replicated using a novel, personalized breakpoint-junction specific quantification droplet digital PCR (ddPCR) technique. Using a separate ddPCR technique we studied the feasibility of identifying XLAG syndrome cases in a distinct patient population of 64 unrelated subjects with acromegaly/gigantism and identified one female gigantism patient that had increased copy number variation (CNV) threshold for GPR101 that was subsequently diagnosed as having XLAG syndrome on HD-aCGH. Employing a combination of HD-aCGH and novel ddPCR approaches, we have demonstrated that XLAG syndrome can be caused by variable degrees of somatic mosaicism for duplications at chromosome Xq26.3. Somatic mosaicism was shown to occur in sporadic males but not in females with XLAG syndrome, although the clinical characteristics of the disease were similarly severe in both sexes. [less ▲]

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See detailReversal of Long-Term Trends in Ethane Identified from the Global Atmosphere Watch Reactive Gases Measurement Network
Helmig, Detlev; Buchmann, Brigitte; Carpenter, Lucy et al

Poster (2016, March 02)

Reactive gases play an important role in climate and air pollution issues. They control the self-cleansing capability of the troposphere, contribute to air pollution and acid deposition, regulate the ... [more ▼]

Reactive gases play an important role in climate and air pollution issues. They control the self-cleansing capability of the troposphere, contribute to air pollution and acid deposition, regulate the lifetimes and provide tracers for deciphering sources and sinks for greenhouse gases. Within GAW, the focus is placed on long-term, high-quality observations of ozone (O3), carbon monoxide (CO), volatile organic compounds (VOC), nitrogen oxides (NOx), and sulfur dioxide (SO2). More than 100 stations worldwide carry out reactive gases measurements with data reported to two World Data Centers. The reactive gases program in GAW cooperates The WMO GAW Reactive Gases Program with regional networks and other global monitoring initiatives in order to attain a complete picture of the tropospheric chemical composition. Observations are being made by in-situ monitoring, measurements from commercial routine air-crafts (e.g. IAGOS), column observations, and from flask sampling networks. Quality control and coordination of measurements between participating stations are a primary emphasis. GAW reactive gases data in rapid delivery mode are used to evaluate operational atmospheric composition forecasts in the EU Copernicus Atmospheric Monitoring Service. Oversight of the program is provided by GAW-WMO coordinated Reactive Gases Scientific Advisory Committee (RG-SAG). [less ▲]

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See detailFlexibility services in the electrical system - presentation
Mathieu, Sébastien ULg

Speech/Talk (2016)

This thesis assesses the impact of exchanging flexibility in the electrical system and analyzes the complex interactions that may result from these exchanges. The impacts on different parts of the ... [more ▼]

This thesis assesses the impact of exchanging flexibility in the electrical system and analyzes the complex interactions that may result from these exchanges. The impacts on different parts of the electrical system are presented: the day-ahead energy market, the secondary reserve and the distribution system. The modeling techniques used to carry the analysis are optimization, game theory and agent-based modeling. Since flexibility is the base block of this thesis, two methods to obtain flexibility from an actual consumption process are broached: direct control of a portfolio of heat pumps and dynamic pricing to control electric heaters and boilers. [less ▲]

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See detailParticipation au débat sur la schizophrénie à partir du film "The voices" de Marjane Satrapi
Englebert, Jérôme ULg

Conference given outside the academic context (2016)

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See detailÉcarts
Jousten, Lison ULg

Scientific conference (2016, March 02)

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See detailStratégies innovantes d’adaptation à la variabilité et au changement climatiques au Sahel : cas de l’irrigation de complément et de l’information climatique dans les exploitations agricoles du Burkina Faso
Zongo, Bétéo ULg

Doctoral thesis (2016)

The Sahelian farmers, the scientific community, government and development partners are actively looking for new farming practices to mitigate the consequences of dry spells probably exacerbated by ... [more ▼]

The Sahelian farmers, the scientific community, government and development partners are actively looking for new farming practices to mitigate the consequences of dry spells probably exacerbated by climate changes. To contribute for this challenge, this research examines the issue of agricultural innovations’ adoption in the Sahelian and Sudano-Sahelian zones of Burkina Faso. Among promoting agricultural innovation, the study explored the possibilities to popularize the practice of supplemental irrigation from individual basins (ICBI) and the use of climate information (CI) in the farms. The approach developed is threefold. Data were collected from farm households through surveys and conducting experimentation of ICBI and use of CI in rainfed agriculture. In addition to the usual descriptive statistics, analysis of variance, the multinomial logit model was used to analyze the determinants of the agricultural innovations dissemination. Determining factors of farmers’ willingness to adopt ICBI were identified using a logistic model. The criteria for partial budgeting were used as tools for assessing the economic viability of ICBI. The Heckman model associated with the contingent valuation approach was used to analyze famers’ willingness to use CI. Simulations were made from a bio-economic model to test some policy instruments for the adoption of these new practices. After four decades of diffusion (1974-2013), the adoption rate is estimated at 69.3% for stone bunds, 49.1% for zaï, 26.2% for grass strips and less than 10% for half-moons, bunds land and mulching. The low level of farmers’ organization and access to agricultural services were the major constraints to their adoption. Over 65% of the farmers believe that ICBI is an effective way to mitigate the adverse effects of dry spells on crop yields. After three years, the experiments showed that this innovation in family farms increases maize yield by 1.08T/ha (88.3%). Maize production surplus achieved with ICBI can fill the monthly cereal requirements of 17 people on average and increases the gross margin by F 178,483 CFA compared to the situation without irrigation. The review of the net present value, internal rate of return and the net benefits increase ratio showed that the profitability to practice supplemental irrigation depends on the types of basins. From the sampled farmers, 93% of them required CI to guide their decision in planning agricultural activities. About 64% of the farmers are willing to pay for CI. The experiments reveal that the surplus of maize and sorghum yield obtained with the use of CI meets the monthly cereal requirement of 7 persons on average compared to traditional seasonal forecasts. The simulations indicate that the ICBI in middle year increases the expected income of 26.5% (F 133 030 CFA) compared to the situation without irrigation. The tested policies include six types of grant and the establishment of a system for granting credit to farm households to finance the supplementary irrigation device. The implementation of these policies should facilitate the adoption of ICBI at a larger scale. The researchers and development actors should pursue the experimentation on the combination of ICBI and CI. [less ▲]

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See detailAnticoherence and entanglement of spin states
Martin, John ULg; Baguette, Dorian ULg; Damanet, François ULg et al

Scientific conference (2016, March 02)

We investigate multiqubit permutation-symmetric states with maxi- mally mixed reduced density matrices in the symmetric subspace [1]. Such states can be viewed as particular spin states, namely anticoher ... [more ▼]

We investigate multiqubit permutation-symmetric states with maxi- mally mixed reduced density matrices in the symmetric subspace [1]. Such states can be viewed as particular spin states, namely anticoher- ent spin states [2]. Using the Majorana representation of spin states in terms of points on the unit sphere [3], we analyze the consequences of degeneracies of the Majorana points and of a point-group symmetry in their arrangement on the existence of anticoherent spin states. We provide different characterizations of anticoherence and establish a link between point symmetries, anticoherence, and SLOCC classes [4]. We consider in detail the case of small numbers of qubits and solve the 4-qubit case completely by identifying and characterizing all 4-qubit anticoherent states. [1] D. Baguette, T. Bastin, and J. Martin, Phys. Rev. A 90, 032314 (2014); O. Giraud et al., Phys. Rev. Lett. 114, 080401 (2015); D. Baguette et al., Phys. Rev. A 92, 052333 (2015). [2] J. Zimba, Electron. J. Theor. Phys. 3, 143 (2006). [3] E. Majorana, Nuovo Cimento 9, 43 (1932). [4] SLOCC classes : Classes of states equivalent through stochastic local operations with classical communication. [less ▲]

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See detailAnticoherence of spin states with point-group symmetries
Baguette, Dorian ULg; Damanet, François ULg; Giraud, Olivier et al

Poster (2016, March 02)

We investigate multiqubit permutation-symmetric states with maximal entropy of entanglement. Such states can be viewed as particular spin states, namely anticoherent spin states. Using the Majorana ... [more ▼]

We investigate multiqubit permutation-symmetric states with maximal entropy of entanglement. Such states can be viewed as particular spin states, namely anticoherent spin states. Using the Majorana represen- tation of spin states in terms of points on the unit sphere, we analyze the consequences of a point-group symmetry in their arrangement on the quantum properties of the corresponding state [1]. We focus on the identi cation of anticoherent states (for which all reduced density matrices in the symmetric subspace are maximally mixed) associated with point-group-symmetric sets of points. We provide three di erent characterizations of anticoherence and establish a link between point symmetries, anticoherence, and classes of states equivalent through stochastic local operations with classical communication. We then in- vestigate in detail the case of small numbers of qubits and construct in nite families of anticoherent states with point-group symmetry of their Majorana points, showing that anticoherent states do exist to arbitrary order. [1] D. Baguette et al., Phys. Rev. A 92, 052333 (2015). [less ▲]

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See detailMaster equation for collective spontaneous emission with quantized atomic motion
Damanet, François ULg; Braun, Daniel; Martin, John ULg

Scientific conference (2016, March 02)

We derive a markovian master equation for the internal dynamics of an ensemble of two-level atoms including the quantization of their motion. Our equation provides a unifying picture of the effects of ... [more ▼]

We derive a markovian master equation for the internal dynamics of an ensemble of two-level atoms including the quantization of their motion. Our equation provides a unifying picture of the effects of recoil and indistinguishability of atoms beyond the Lamb-Dicke regime on both their dissipative and conservative dynamics. We give general expressions for the decay rates and the dipole-dipole shifts for any motional states, generalizing those in Ref. [1]. We find closed-form formulas for a number of relevant states (gaussian states, Fock states and thermal states). In particular, we show that dipole-dipole interactions and cooperative photon emission [2] can be modulated through the external state of motion. As an application of our general formalism, we study the spatial Pauli blocking of two fermionic atoms beyond the Lamb-Dicke regime [3]. [1] G. S. Agarwal, Springer Tracts In Modern Physics 70, 1 (1974). [2] R. H. Dicke, Phys. Rev. 93, 99 (1954). [3] R. M. Sandner, M. Müller, A. J. Daley & P. Zoller, Phys. Rev. A 84, 043825 (2011). [less ▲]

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See detailFlexibility services in the electrical system
Mathieu, Sébastien ULg

Doctoral thesis (2016)

The work presented in this thesis considers the electrical flexibility from the electric load to its usage as a commodity. The conception of the European electrical system has led to a large amount of ... [more ▼]

The work presented in this thesis considers the electrical flexibility from the electric load to its usage as a commodity. The conception of the European electrical system has led to a large amount of actors that are impacted by flexibility exchanges. This thesis proposes approaches to assess the impact of exchanging flexibility in the electrical system and analyzes the complex interactions resulting from these exchanges. The modeling techniques used to carry the analysis are optimization, game theory and agent-based modeling. The impacts on different parts of the electrical system are presented: the day-ahead energy market, the secondary reserve and the distribution system. Since flexibility is the base block of this thesis, two methods to obtain flexibility from actual consumption processes are broached: direct control of the loads and dynamic pricing. One chapter provides an example of how flexibility can be obtained by the direct control of a portfolio of heat pumps and another chapter studies the control of electric heaters and boilers via the use of a simple price signal. [less ▲]

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See detailSpectral statistics of chaotic many-body systems
Dubertrand, Rémy ULg

in New Journal of Physics (2016), 18

We derive a trace formula that expresses the level density of chaotic many-body systems as a smooth term plus a sum over contributions associated to solutions of the nonlinear Schrödinger (or ... [more ▼]

We derive a trace formula that expresses the level density of chaotic many-body systems as a smooth term plus a sum over contributions associated to solutions of the nonlinear Schrödinger (or Gross–Pitaevski) equation. Our formula applies to bosonic systems with discretised positions, such as the Bose–Hubbard model, in the semiclassical limit as well as in the limit where the number of particles is taken to infinity. We use the trace formula to investigate the spectral statistics of these systems, by studying interference between solutions of the nonlinear Schrödinger equation. We show that in the limits taken the statistics of fully chaotic many-particle systems becomes universal and agrees with predictions from the Wigner–Dyson ensembles of random matrix theory. The conditions for Wigner–Dyson statistics involve a gap in the spectrum of the Frobenius–Perron operator, leaving the possibility of different statistics for systems with weaker chaotic properties. [less ▲]

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See detailL’abus de droit et le manque de réelle substance économique : Belgique
Bourgeois, Marc ULg

Conference given outside the academic context (2016)

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See detailThe Central Role of FORS1/2 Spectropolarimetric Observations for the Progress of Stellar Magnetism Studies
Schöller, M.; Hubrig, S.; Ilyin, I. et al

in The Messenger (2016), 163

The spectropolarimetric mode of the FOcal Reducer and low dispersion Spectrographs (FORS), which was first implemented in FORS1, and then moved to FORS2 seven years ago, has made it possible to probe the ... [more ▼]

The spectropolarimetric mode of the FOcal Reducer and low dispersion Spectrographs (FORS), which was first implemented in FORS1, and then moved to FORS2 seven years ago, has made it possible to probe the presence of magnetic fields in stars of different spectral classes at almost all stages of stellar evolution. While in the early days of FORS1, many of the observations were related to magnetic Ap/Bp stars and their progenitor Herbig Ae/Be stars, recent spectropolarimetric studies with FORS2 have involved more challenging targets, such as massive O- and B-type stars in clusters and in the field, very fast rotating massive stars with magnetospheres, Wolf-Rayet stars and central stars of planetary nebulae. The role of FORS observations for stellar magnetic field measurements is summarised and improvements in the measurement technique are described. [less ▲]

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See detailThe compositional evolution of C/2012 S1 (ISON) from ground-based high-resolution infrared spectroscopy as part of a worldwide observing campaign
Dello Russo, N.; Vervack, R. J.; Kawakita, H. et al

in Icarus (2016), 266

Volatile production rates, relative abundances, rotational temperatures, and spatial distributions in the coma were measured in C/2012 S1 (ISON) using long-slit high-dispersion (λ/Δλ ∼ 2.5 × 10[SUP]4[/SUP ... [more ▼]

Volatile production rates, relative abundances, rotational temperatures, and spatial distributions in the coma were measured in C/2012 S1 (ISON) using long-slit high-dispersion (λ/Δλ ∼ 2.5 × 10[SUP]4[/SUP]) infrared spectroscopy as part of a worldwide observing campaign. Spectra were obtained on UT 2013 October 26 and 28 with NIRSPEC at the W.M. Keck Observatory, and UT 2013 November 19 and 20 with CSHELL at the NASA IRTF. H[SUB]2[/SUB]O was detected on all dates, with production rates increasing markedly from (8.7 ± 1.5) × 10[SUP]27[/SUP] molecules s[SUP]-1[/SUP] on October 26 (R[SUB]h[/SUB] = 1.12 AU) to (3.7 ± 0.4) × 10[SUP]29[/SUP] molecules s[SUP]-1[/SUP] on November 20 (R[SUB]h[/SUB] = 0.43 AU). Short-term variability of H[SUB]2[/SUB]O production is also seen as observations on November 19 show an increase in H[SUB]2[/SUB]O production rate of nearly a factor of two over a period of about 6 h. C[SUB]2[/SUB]H[SUB]6[/SUB], CH[SUB]3[/SUB]OH and CH[SUB]4[/SUB] abundances in ISON are slightly depleted relative to H[SUB]2[/SUB]O when compared to mean values for comets measured at infrared wavelengths. On the November dates, C[SUB]2[/SUB]H[SUB]2[/SUB], HCN and OCS abundances relative to H[SUB]2[/SUB]O appear to be within the range of mean values, whereas H[SUB]2[/SUB]CO and NH[SUB]3[/SUB] were significantly enhanced. There is evidence that the abundances with respect to H[SUB]2[/SUB]O increased for some species but not others between October 28 (R[SUB]h[/SUB] = 1.07 AU) and November 19 (R[SUB]h[/SUB] = 0.46 AU). The high mixing ratios of H[SUB]2[/SUB]CO/CH[SUB]3[/SUB]OH and C[SUB]2[/SUB]H[SUB]2[/SUB]/C[SUB]2[/SUB]H[SUB]6[/SUB] on November 19, and changes in the mixing ratios of some species with respect to H[SUB]2[/SUB]O between October 28 to November 19, indicates compositional changes that may be the result of a transition from sampling radiation-processed outer layers in this dynamically new comet to sampling more pristine natal material as the outer processed layer was increasingly eroded and the thermal wave propagated into the nucleus as the comet approached perihelion for the first time. On November 19 and 20, the spatial distribution for dust appears asymmetric and enhanced in the antisolar direction, whereas spatial distributions for volatiles (excepting CN) appear symmetric with their peaks slightly offset in the sunward direction compared to the dust. Spatial distributions for H[SUB]2[/SUB]O, HCN, C[SUB]2[/SUB]H[SUB]6[/SUB], C[SUB]2[/SUB]H[SUB]2[/SUB], and H[SUB]2[/SUB]CO on November 19 show no definitive evidence for significant contributions from extended sources; however, broader spatial distributions for NH[SUB]3[/SUB] and OCS may be consistent with extended sources for these species. Abundances of HCN and C[SUB]2[/SUB]H[SUB]2[/SUB] on November 19 and 20 are insufficient to account for reported abundances of CN and C[SUB]2[/SUB] in ISON near this time. Differences in HCN and CN spatial distributions are also consistent with HCN as only a minor source of CN in ISON on November 19 as the spatial distribution of CN in the coma suggests a dominant distributed source that is correlated with dust and not volatile release. The spatial distributions for NH[SUB]3[/SUB] and NH[SUB]2[/SUB] are similar, suggesting that NH[SUB]3[/SUB] is the primary source of NH[SUB]2[/SUB] with no evidence of a significant dust source of NH[SUB]2[/SUB]; however, the higher production rates derived for NH[SUB]3[/SUB] compared to NH[SUB]2[/SUB] on November 19 and 20 remain unexplained. This suggests a more complete analysis that treats NH[SUB]2[/SUB] as a distributed source and accounts for its emission mechanism is needed for future work. [less ▲]

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See detailCoordination des soins en première ligne de soins: et Mme Dupont?
Belche, Jean ULg; Buret, Laetitia ULg; Duchesnes, Christiane ULg et al

in Santé Conjuguée (2016), 74

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See detailEvaluer les connaissances et savoir-faire en matière de recherche d’informations scientifiques : comment faire avec de grands groupes d’étudiants en bachelier ?
Vandenput, Sandrina ULg; Crahay, Vinciane ULg; Piazza, Aurélie ULg et al

Conference (2016, March 01)

Au terme du cours consacré à la recherche d’informations scientifiques - au programme des bacheliers de la Faculté de Médecine vétérinaire et de la Faculté de Psychologie, Logopédie et des Sciences de ... [more ▼]

Au terme du cours consacré à la recherche d’informations scientifiques - au programme des bacheliers de la Faculté de Médecine vétérinaire et de la Faculté de Psychologie, Logopédie et des Sciences de l’Éducation (Université de Liège) - les étudiants doivent avoir une vue d’ensemble de la publication scientifique et être capables de (i) mener de manière autonome une recherche d’informations et (ii) de citer correctement leurs sources en respectant des normes bien précises lors de la rédaction de documents. L’évaluation de ce cours est contraignante car il s’agit de cohortes d’étudiants de plus en plus grandes (> 300 étudiants par cursus). Comment évaluer les connaissances ainsi que les savoir-faire de grands groupes d’étudiants ? Jusqu’alors l’examen se composait de questions ouvertes et nécessitait que chaque étudiant ait à sa disposition un ordinateur connecté à Internet. Cette méthode requérait une logistique importante avant et pendant l’examen ainsi que des semaines de correction. Plusieurs alternatives à cette évaluation ont alors été envisagées : travail individuel, travail de groupe, questionnaire à choix multiple… mais elles ne répondaient pas aux exigences fixées par les compétences à évaluer. La piste retenue pour cette nouvelle année académique reste contraignante du point de vue organisationnel (ordinateur pour chaque étudiant) mais permet une correction standardisée, automatisée, fiable et rapide. En effet, le questionnaire combine désormais des questions à choix multiple (QCM ; jusqu’à 9 propositions de réponses) et des questions à choix large (QCL ; jusqu’à 999 propositions). Le QCL présente l’avantage d’être proche de l’évaluation à l’aide de questions ouvertes sans les désavantages de la correction. Nous proposons de présenter ce dispositif évaluatif ainsi que ses avantages et inconvénients par rapport à d’autres méthodes d’évaluation. [less ▲]

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See detailDémocratie, je hais ton nom
Debras, François ULg

Conference given outside the academic context (2016)

Detailed reference viewed: 25 (8 ULg)