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See detailTranscranial magnetic stimulation in sleep consciousness
Gosseries, Olivia ULg; Niemienen, Jaakko; Jason, Samaha et al

Poster (2016, June)

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See detailAuditory evoked potential audiograms in post-settlement stage individuals of coral reef fishes
Colleye, Orphal ULg; Kever, Loïc ULg; Lecchini, David et al

in Journal of Experimental Marine Biology & Ecology (2016), 483

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See detailClosing in on minimal dark matter and radiative neutrino masses
Da Silva Simoes, Catarina ULg; Aristizabal Sierra, Diego ULg; Wegman Ostrosky, Daniel ULg

in Journal of High Energy Physics [=JHEP] (2016)

We study one-loop radiative neutrino mass models in which one of the beyond-the- standard model fi elds is either a hypercharge-zero fermion quintet (minimal dark matter) or a hypercharge-zero scalar ... [more ▼]

We study one-loop radiative neutrino mass models in which one of the beyond-the- standard model fi elds is either a hypercharge-zero fermion quintet (minimal dark matter) or a hypercharge-zero scalar septet. By systematically classifying all possible one-loop such models we identify various processes that render the neutral component of these representations (dark matter) cosmologically unstable. Thus, our fi ndings show that these scenarios are in general not reconcilable with dark matter stability unless tiny couplings or additional ad hoc symmetries are assumed, in contrast to minimal dark matter models where stability is entirely due to the standard model gauge symmetry. For some variants based on higher-order loops we find that alpha_ 2 reaches a Landau pole at rather low scales, a couple orders of magnitude from the characteristic scale of the model itself. Thus, we argue that some of these variations although consistent with dark matter stability and phenomenological constraints are hard to reconcile with perturbativity criteria. [less ▲]

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See detailAnalogical reasoning in children with Specific Language Impairment: Evidence from a scene analogy task
Krzemien, Magali ULg; Jemel, Boutheina; Maillart, Christelle ULg

Poster (2016, June)

Analogical reasoning development maintains a mutual influence with language acquisition: the use of relational labels helps to resolve analogical reasoning tasks (Christie & Gentner, 2014) while ... [more ▼]

Analogical reasoning development maintains a mutual influence with language acquisition: the use of relational labels helps to resolve analogical reasoning tasks (Christie & Gentner, 2014) while analogical reasoning enables the acquisition of new linguistic concepts or structures (Gentner & Namy, 2006). This link has driven some authors to examine the analogical reasoning ability of children with Specific Language Impairment. Those children have poorer analogical reasoning performance than their age-matched peers without language disorders (Leroy et al., 2012 ; Leroy et al., 2014). So, children with SLI seem to have an analogical reasoning weakness which could be linked to their language disorders. Thus, our goal here is to measure the ability of children with SLI to solve analogies, and to compare it to chronological age-matched but also to linguistic age-matched peers without language disorders. Our hypotheses here are the followings: children with SLI have weaker analogical reasoning competence compared to chronological age-matched peers and similar or weaker analogical reasoning competence compared to language-matched peers. To test these hypotheses, we use a scene analogy task composed of pictures of 20 relations (Richland et al., 2006) varying in relational complexity (binary or ternary relations) and in perceptual distraction. Twenty children with SLI are matched to chronological age and linguistic age peers without language disorders. Children with SLI have poorer performance then their age-matched peers but they have similar performance to their language-matched peers. This data reinforces the idea of a link between analogical reasoning and language, also in children with SLI. However, the nature of this link should still be clarified. [less ▲]

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See detailCultural stratigraphy at Sibudu and its implications for our understanding of the MSA
Conard, Nicholas; Miller, Christopher; Rots, Veerle ULg et al

Conference (2016, June)

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See detailDie Deutschsprachige Gemeinschaft nach der sechsten Staatsreform : Bestandsaufnahme, Debatten und Perspektiven
Bouhon, Frédéric ULg; Niessen, Christoph; Reuchamps, Min

in Courrier Hebdomadaire du CRISP (2016), 2266-2267

Genau wie bei allen anderen Bestandteilen Belgiens ist auch das Erscheinungsbild der Deutschsprachigen Gemeinschaft durch die sechste Staatsreform grundlegend verändert worden. Sie verfügt fortan über die ... [more ▼]

Genau wie bei allen anderen Bestandteilen Belgiens ist auch das Erscheinungsbild der Deutschsprachigen Gemeinschaft durch die sechste Staatsreform grundlegend verändert worden. Sie verfügt fortan über die konstitutive Autonomie – das bedeutet, die Funktionsweise ihrer Regierung und ihres Parlamentes zu regeln. Vor allem hat sich ihr Handlungsspielraum im Bereich der kulturellen und personenbezogenen Angelegenheiten ebenso wie bei der Französischen und Flämischen Gemeinschaft erweitert: Familienleistungen, Gesundheitsversorgung, Personenbeistand, Justizhaus, elektronische Überwachung, Industrielehre, … Zudem hat die Wallonische Region ihr die Ausübung neuer Zuständigkeiten im Bereich des Tourismus, der Beschäftigung und der Gemeinden übertragen. Der vorliegende Courrier hebdomadaire macht eine Bestandsaufnahme der Zuständigkeiten sowie der Finanzierung der Deutschsprachigen Gemeinschaft und identifiziert dabei die Veränderungen, die die sechste Staatsreform in dieser Hinsicht gebracht hat. Er geht auf die politischen Debatten ein, die diese Reformen begleitet haben und auf die Art und Weise, wie diese bereites teilweise umgesetzt worden sind. Er rekapituliert auch wie die Deutschsprachigen Gemeinschaft innerhalb der Europäischen Union, auf föderaler Ebene, innerhalb der Wallonischen Region und in der Provinz Lüttich vertreten wird . Die Studie zeigt die Perspektiven auf, die sich der Deutschsprachigen Gemeinschaft in Zukunft eröffnen. Diese fordert dabei zum einen, die Gesamtheit der regionalen und provinzialen Zuständigkeiten auf ihrem Gebiet ausüben zu können und zum anderen, einen sichtbareren Platz in der institutionellen Architektur des Landes einzunehmen. Da diesen Ansprüchen bislang nicht nachgekommen wurde, möchten die deutschsprachigen politischen Verantwortlichen die Diskussion im Laufe der kommenden Jahre wieder aufgreifen. [less ▲]

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See detailOn the modeling of MMC for use in large scale dynamic simulations
Freytes, Julian; Papangelis, Lampros ULg; Saad, Hani et al

in Proceedings of the 19th PSCC (2016, June)

This paper focuses on simplified models of the Modular Multilevel Converter suitable for large-scale dynamic studies, in particular simulations under the phasor approximation. Compared to the existing ... [more ▼]

This paper focuses on simplified models of the Modular Multilevel Converter suitable for large-scale dynamic studies, in particular simulations under the phasor approximation. Compared to the existing literature, this paper does not a priori adopt the modeling approach followed for the original twolevel or three-level Voltage Source Converter. On the contrary, a model is derived following a physical analysis that preserves its average internal dynamic behavior. An equivalent control structure is proposed and various alternatives are highlighted. The proposed model with its controllers has been implemented in a phasor simulation software and its response has been validated against a detailed Electromagnetic Transient model. Finally, an illustrative example is presented with the application of the proposed model on a large grid consisting of AC areas interconnected with a multi-terminal DC grid. [less ▲]

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See detailAn Exact Method for Designing Shewhart X ̅ and S2 Control Charts to Guarantee the In-Control Performance
Faraz, Alireza ULg; Heuchenne, Cédric ULg

in Journal of Quality Technology (2016)

The in-control performance of the Shewhart X ̅ and S2 control charts with estimated in-control parameters has been evaluated by a number of authors. Results indicate an unrealistically large amount of ... [more ▼]

The in-control performance of the Shewhart X ̅ and S2 control charts with estimated in-control parameters has been evaluated by a number of authors. Results indicate an unrealistically large amount of Phase I data is needed to have the desired in-control average run length (ARL) value in Phase II. To overcome this problem, it has been recommended that the control limits be adjusted based on a bootstrap method to guarantee that the in-control ARL is at least a specified value with a certain specified probability. In our paper we present simple formulas for the required control limits so that practitioners do not have to use the bootstrap method. An assumption of normality is required. The advantage of our proposed method is in its simplicity; there is no bootstrapping and the control chart constants do not depend on the Phase I sample data. [less ▲]

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See detailModifying Indoor Facilities Appropriate to Children
Jidovtseff, Boris ULg; Delvaux, Anne ULg; Mornard, Manhattan ULg et al

in Book of abstracts AISEP 2016 (2016, June)

Introduction Physical literacy development during childhood is critical not only to favor sport performance outcomes but also to develop long term physical activity. It’s very important for children to ... [more ▼]

Introduction Physical literacy development during childhood is critical not only to favor sport performance outcomes but also to develop long term physical activity. It’s very important for children to move in a thinking way. Diversified activities are important to develop a large panel of fundamental motor skills and to stimulate perception. It is important for children to move, but it has to be done in a thinking way. Focus on inquiry With young children it is important to maximize active time, to develop fundamental motor skills and perception, to take into account inter-individual differences, to favor enjoyment, self-confidence and to guarantee optimal security. Most of these pedagogical challenges can be reached by appropriate instruction and by an adapted environment. Contribution There is clear evidence that modifying exercise facilities influence children’s behaviour with consequences for motivation, activity level and motor development. For 25 years a reflexive approach has been used at CEReKi (Liège, Belgium) in order to determine how indoor facilities can be modified with the aim to meet children needs and to favor motor development. Attractive circuits have been developed to stimulate specific motor skills (gymnastic, athletic or ball circuits). They were created to afford action possibilities and challenges for children to explore their own abilities for exercise. According to the children’s age and level of ability different pedagogical conditions can be provided: spontaneous play, guided discovery or structured games. Circuits have to be organised in such a way that children can do most exercises on their own. The arrangement of equipment offers multiple possibilities for movement, favouring active discovery for all children. The autonomy of children allows the teacher to move throughout the circuit and assist children by scaffolding their learning. Conclusion Our experience confirms that modifying indoor facilities is relevant for 3 to 8 years old children activities. [less ▲]

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See detailPhotoionization as a Soft Ionization Source for Comprehensive Two-dimensional GC (GCxGC) and High-Resolution TOFMS
Ubukata, M; Cody, RB; Dane, J et al

Poster (2016, June)

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See detailPOP measurements: Tracking Down the Part in the Quintillion
Focant, Jean-François ULg

Conference (2016, June)

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See detailHealth screening to identify opportunities to improve preventive medicine in cats and dogs
Diez, Marianne ULg; Picavet, Philippe; Ricci, Rebecca et al

in European Journal of Companion Animals Practice online (2016), 2(Summer), 54-62

OBJECTIVES: To describe the results of a prevention campaign in terms of participation and pet health status and to identify opportunities to improve preventive medicine in cats and dogs. METHODS:An ... [more ▼]

OBJECTIVES: To describe the results of a prevention campaign in terms of participation and pet health status and to identify opportunities to improve preventive medicine in cats and dogs. METHODS:An awareness campaign was designed to highlight the role of veterinarians and emphasise the benefits of a veterinary visit. Owners were invited to make an appointment for a free pet health check in a voluntarily participating veterinary clinic. Observations recorded by the veterinarians were entered in a database and subsequently analysed using simple descriptive statistics. RESULTS:A total of 5305 completed health check forms were analysed. The percentages of overweight and obese dogs and cats were 34 and 36%, respectively; this was the most common finding, followed by dental calculus (31% in dogs, 21% in cats). In total 67% of cats did not undergo flea control and 59% were not vaccinated. CLINICAL SIGNIFICANCE: Opportunities for increased quality of care are numerous given the high percentage of intact, unvaccinated or non-permanently identified pets and the low level of worm and flea control. Animal health should benefit from preventive measures, and improved management can be undertaken after early detection of diseases. [less ▲]

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See detailThe Origins of Dominance in EU Competition Law: An Introductory Note
Marcos Ramos, Jorge ULg

Scientific conference (2016, June)

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See detailSeed Dispersal by Western Lowland Gorillas: from Fruits to Seedlings
Haurez, Barbara ULg

in Gorilla Journal Journal of Berggorilla & Regenwald Direkthilfe (2016), 52

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See detailDisentangling soil from plant methanol exchanges in a maize field: a first step
Bachy, Aurélie ULg; Mozaffar, Ahsan ULg; Aubinet, Marc ULg et al

Poster (2016, June)

This poster presents the current research done in order to disentangle soil from plant methanol exchanges in a maize field. Methanol exchanges were calculated at ecosystem-scale (therefore including both ... [more ▼]

This poster presents the current research done in order to disentangle soil from plant methanol exchanges in a maize field. Methanol exchanges were calculated at ecosystem-scale (therefore including both components). It bases on the following observation: methanol exchanges on bare soil (measured when maize was at germination stage) were as important as when plants were fast growing (and thereby, when the highest methanol plant methanol emissions were expected), and this under similar weather conditions. The goal of this poster is thus to understand why emissions were similar at these two periods. First, it addresses the question of the actual contribution of maize plants in methanol exchanges, by comparing up-scaled methanol exchanges measured on maize at leaf-scale (Mozaffar A.) to those measured at ecosystem-scale. Then, it investigates methanol exchanges mechanisms in order to evaluate how did soil methanol emissions evolve along the maize growing season. At the end of this poster, the hypothesis of decreasing soil methanol emissions along the maize growing season is proposed. [less ▲]

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See detailEducation of instructors of a physical activity program for cancer patients and survivors: planning and evaluation of a poster presentation session
Rompen, Jérôme ULg; Korycki, Marta ULg; Ortmans, Sabine et al

Poster (2016, June)

Introduction The Belgian Foundation against Cancer proposes an adapted physical activity (APA) program for cancer patients and survivors, called Raviva (http://www.cancer.be/raviva-bouger-pour-se-sentir ... [more ▼]

Introduction The Belgian Foundation against Cancer proposes an adapted physical activity (APA) program for cancer patients and survivors, called Raviva (http://www.cancer.be/raviva-bouger-pour-se-sentir-mieux).The activities are supervised by instructors with inconstant trainings and experiences. Contrary to other countries, Belgian APA instructors do not necessarily need to follow specific education programs such those proposed by the ACSM (Schmitz et al., 2010).We were involved in the implementation of a specific training day for in-service Raviva instructors. As it is the case in sport coaches’ education (Erickson et al., 2008), interacting with colleagues seemed to be an appropriate method to improve APA instructors’ skills. Therefore, interactive methods were proposed to be used in order to increase the participants’ interest. The aim of this paper was to describe and analyse a poster presentation session as well as to identify good practices. Methods As part of the training day, the poster presentation session consisted to create groups of 4 to 5 persons and to ask them to imagine and share solutions to specific problems linked with psycho-emotional aspects of the instruction process with Raviva groups. Three methods were used to collect the data: interviews of the organizers (n=4), a questionnaire for all trainees (n=35) and participant observation. Results Examples of good practices were listed and exchanged between the participants. All trainees considered that the poster presentation session was interesting and most of them (94%) reported that appropriate themes were discussed. Moreover, 88.2% of the participants mentioned that they were able to share their experiences. Three expressed negative opinions about the organization. These opinions were supported by all organizers as well as by the observation. Conclusions This educational tool seems to be interesting. However, organizers should plan enough time for such activity. Moreover, the time allocation between each part of the session should be better prepared and controlled. [less ▲]

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See detailEducation of instructors of a physical activity program for cancer patients and survivors: planning and evaluation of interactive adapted physical activity working groups
Rompen, Jérôme ULg; Korycki, Marta ULg; Ortmans, Sabine et al

Conference (2016, June)

Introduction Raviva is a Belgian adapted physical activity (APA) program for cancer patients and survivors, developed by the Belgian Foundation against Cancer (http://www.cancer.be/aide-aux-patients/la ... [more ▼]

Introduction Raviva is a Belgian adapted physical activity (APA) program for cancer patients and survivors, developed by the Belgian Foundation against Cancer (http://www.cancer.be/aide-aux-patients/la-fondation-votre-service/raviva-bouger-pour-se-sentir-mieux). Activities supported by this foundation are supervised by instructors with inconstant trainings and experiences. Indeed, in Belgium, APA instructors do not necessarily follow specific training programs such those proposed by the ACSM (Schmitz et al., 2010). As it is the case in sport coaches’ education (Erickson et al., 2008), interacting with colleagues and sharing knowledge could be an interesting way to improve APA instructors’ competencies. The aim of this study was to plan and analyse interactive APA working groups, as part of a training day intended for all Raviva instructors. Methods As part of this training, we proposed three practical physical activity working groups, each one concerning a specific activity: fitness, relaxation and aqua-aerobics. They were designed to generate some good practices in intervention with Raviva groups and had to be interactive: all participants had the opportunity to present their own practices and to discuss and comment the practices of the others. Three methods were used to analyse the activities: interviews of the organizers (n=4), a questionnaire for all trainees (n=35) and participant observation. Results Many examples of practical situations and good practices have been identified.79.4% of the trainees considered that the proposed method was interesting and 88.3% mentioned that they have been actively involved. The organizers were less convinced as they highlighted a lack of ideas sharing as well as low active participation and dynamism. Observations confirmed the organizers’ opinions. Conclusions Participants appeared to be globally satisfied with the practical activities. However, further research is needed to measure the impact of such methods on their future practices. [less ▲]

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See detailEfficient Computation of the Extrema of Algebraic Quality Measures for Curvilinear Finite Elements
Johnen, Amaury ULg; Geuzaine, Christophe ULg; remacle, Jean-François

Conference (2016, June)

The development of high-order computational methods for solving partial differential equations on unstructured grids has been underway for many years. Such methods critically depend on the availability of ... [more ▼]

The development of high-order computational methods for solving partial differential equations on unstructured grids has been underway for many years. Such methods critically depend on the availability of high-quality curvilinear meshes, as one bad element can degrade the solution in the whole domain. The usual way of generating curved meshes is to first generate a (high-quality) straight-sided mesh. Then, mesh entities that are classified on the boundaries of the domain are curved. This operation introduces a "shape-distortion" that should be controlled. Quality measures allow to quantify to which point an element is well-shaped. They also provide tools to improve the quality of meshes through optimization. In this work we propose an efficient method to compute several quality measures for curved elements, based on the Jacobian of the mapping between the straight-sided elements and the curved ones. Contrary to the approach presented in "A. Gargallo-Peiró, X. Roca, J. Peraire, and J. Sarrate. Distortion and quality measures for validating and generating high-order tetrahedral meshes. Engineering with Computers, pages 1–15, 2014.", which relies on an L2-norm over the elements, we compute the actual minimum and maximum of the local quality measure for each element. The method is an extension of previous works on the validity of those elements (A. Johnen et al., 2013). The key feature is that we can adaptively expand functions based on the Jacobian matrix and its determinant in terms of Bézier functions. Bézier functions have both properties of boundedness and positivity, which allow sharp computation of minimum or maximum of the interpolated functions. [less ▲]

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