References of "Unpublished conference/Abstract"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailHow classroom teachers do take the ‘Physical Activity Pauses at School’ (PAPS)? A project implemented in Wallonia
Cloes, Marc ULiege; Cloes, Stéphanie

Conference (2017, September 15)

In Wallonia, special efforts are needed in order to respect the international recommendations on physical activity in youth. School is definitely considered as a central pillar in the promotion of an ... [more ▼]

In Wallonia, special efforts are needed in order to respect the international recommendations on physical activity in youth. School is definitely considered as a central pillar in the promotion of an active lifestyle. The aim of this study was to analyze the implementation process of daily activity breaks called ‘Physical Activity Pause at School’ (PAPS) in 6 primary schools of the Liege area. 23 classroom teachers were involved. They had to propose at least one PAPS/day during the 15-16 school year. Diary, questionnaires, focus groups and interviews were used for data collecting. Two thirds of the subjects continued until the end. The videos were not systematically used. Four teachers’ profiles were identified: Innovators, Invested, Careful, and Disengaged. 12 factors facilitating or limitating the involvement of the teachers have been analyzed. The study comes to a model of concrete actions to respect in order to increase the chances of success in the implementation of such project. [less ▲]

Detailed reference viewed: 38 (5 ULiège)
See detailIdentification of Signaling Pathways Regulating Beta Cell Regeneration in Zebrafish
Massoz, Laura; Bergemann, David ULiege; Lavergne, Arnaud ULiege et al

Conference (2017, September 15)

Diabetes is becoming a leading health issue worldwide. It occurs under insulin resistance/deficiency and when insulin-producing pancreatic beta-cell mass is dramatically reduced. Besides therapeutic ... [more ▼]

Diabetes is becoming a leading health issue worldwide. It occurs under insulin resistance/deficiency and when insulin-producing pancreatic beta-cell mass is dramatically reduced. Besides therapeutic strategies to preserve beta-cell mass and function and improve insulin treatments, beta-cell replacement constitutes a promising alternative to replenish the pancreas with functional beta-cells. Beta-cell neogenesis can be achieved from different pancreatic cell types leading to the hope that triggering regeneration could be harnessed in future therapies. Still, mammals show limited regenerative capabilities, making difficult the study of these mechanisms. In contrast, zebrafish is extensively used for regeneration studies notably of beta-cells. We recently showed that the adult zebrafish ducts display characteristics of embryonic pancreatic progenitors that give rise to beta-cells in physiological and induced diabetic condition*. To better understand the molecular mechanisms underlying this potential, genes and signaling pathways regulated in the zebrafish pancreatic ducts after beta-cell ablation have been identified by transcriptomic profiling. For functional studies, we have developed an assay using 7-20 days old larvae to investigate the role of selected candidate pathways in beta-cell regeneration with pharmacological inhibitors/activators and by transgenic overexpression of candidate signaling factors. These results should provide new hints to help improve regenerative competences in mammals. [less ▲]

Detailed reference viewed: 20 (10 ULiège)
Peer Reviewed
See detailThe artistic patronage of Cardinal Charles II de Bourbon (1433-1488)
Laruelle, Anne-Sophie ULiege

Conference (2017, September 14)

As one of the most important political and religious figures of the mid-fifteenth century, Charles II de Bourbon (1433-1488) has not received the attention he deserves. Charles, archbishop of Lyon (1446 ... [more ▼]

As one of the most important political and religious figures of the mid-fifteenth century, Charles II de Bourbon (1433-1488) has not received the attention he deserves. Charles, archbishop of Lyon (1446), was made cardinal by the pope Sixtus IV in 1476. He was also an important courtier, and a confidant of King Louis XI of France, to whom he was related by marriage. Charles was present at the interview of Kings Louis XI and Edward IV of England in 1475 and in the signature of the peace treaty concluded between them, which formally ended the Hundred Years’ War. Among other posts, Charles held the governorship of Paris and was the head of the King’s Council. Grandson of John the Fearless and cousin to Charles the Bold, he also bore numerous connections with the Burgundian Court and the Southern Netherlands. This paper aims at re-appreciating the artistic patronage of the wealthy cardinal, in spite of the difficulties raised by the paucity of surviving artworks he commissioned. Charles was indeed an important patron, who founded a splendid funerary chapel in Lyon Cathedral, and had the archiepiscopal palace of Lyon built. The cardinal owned a lot of exceptional manuscripts, sculptures and tapestries. Due to his position, Charles may have influenced tastes of Louis XI for the arts, but also the future king Charles VIII’s (Charles de Bourbon was, along with Joan of Valois, Duchess of Bourbon and Edward of Westminster, godparent of the dauphin in 1470).Particular attention will be paid to his collection of tapestries, which have never received detailed analysis. Charles II de Bourbon’s arms (motto, initials, and his device of a flaming sword) appear on only three pieces today: “The Adoration of the Magi”, “The Three Coronations” (both preserved in Sens cathedral), and a scene from the “Story of Hercules” (Mobilier National, Paris). Woven with extremely high quality, probably in the Southern Netherlands, the cardinal’s tapestries are undoubtedly among the finest and most expensive pieces of the 15th century. [less ▲]

Detailed reference viewed: 37 (1 ULiège)
Full Text
See detailLes documents d'urbanisme. Vers quel typologies de représentation sous le paradigme du BIM ?
Boutemadja, Abdelkader ULiege

Conference (2017, September 14)

Sous le nouveau paradigme du BIM et du SIG 3D, quel typologies de représentation graphique doivent adopter les documents d'urbanisme. Il s'agit d'une reflexion qui donne à entrevoir les possibilités de ... [more ▼]

Sous le nouveau paradigme du BIM et du SIG 3D, quel typologies de représentation graphique doivent adopter les documents d'urbanisme. Il s'agit d'une reflexion qui donne à entrevoir les possibilités de représentation qu'offrent les nouvelles technologies. [less ▲]

Detailed reference viewed: 29 (0 ULiège)
Full Text
Peer Reviewed
See detailModélisation des mécanismes psychologiques du processus de radicalisation
Garcet, Serge ULiege

Conference (2017, September 14)

Detailed reference viewed: 58 (2 ULiège)
See detailDevelopment of SERS nanosensors for the detection of small bioactive molecules by cellular analysis in complex matrices: Application to dopamine
Dumont, Elodie ULiege; De Bleye, Charlotte ULiege; Cailletaud, Johan ULiege et al

Conference (2017, September 13)

This communication reports the different steps undertaken in order to develop a new Surface-Enhanced Raman Scattering (SERS) nanosensor for the quantification of dopamine in the culture medium of PC-12 ... [more ▼]

This communication reports the different steps undertaken in order to develop a new Surface-Enhanced Raman Scattering (SERS) nanosensor for the quantification of dopamine in the culture medium of PC-12 cells. First, the synthesis of the SERS substrate, gold nanoparticles, and its characterization. Then the development of the method with the help of a design of experiments and the demonstration of the specificity of the method over other structurally related catecholamines. And finally, the implementation of the method on the culture medium of PC-12 cells, on an HEPES buffer having served to wash the cells and on the PC-12 cells. [less ▲]

Detailed reference viewed: 38 (10 ULiège)
Peer Reviewed
See detailSampling only 10 μL of whole blood to study the bioavailability of itraconazole formulations in rats
Kok, Miranda ULiege; Thiry, Justine ULiege; Evrard, Brigitte ULiege et al

Conference (2017, September 12)

Background Volumetric absorptive microsampling (VAMS) offers a unique opportunity to collect small and accurate quantities of biological fluids. This sampling technique is of great interest for volume ... [more ▼]

Background Volumetric absorptive microsampling (VAMS) offers a unique opportunity to collect small and accurate quantities of biological fluids. This sampling technique is of great interest for volume-limited samples and for the collection of multiple samples from the same animal. This serial sample collection may reduce the number of required study animals, thereby fulfilling the three Rs rule (refine, reduce, replace). Here, we demonstrate the applicability of VAMS to study the bioavailability of drug formulations in rats. Methods Four itraconazole-containing formulations were successively administered to rats with a wash-out period of one week. VAMS was used to collect 14 whole blood samples of only 10 μL each within a time frame of 48 hours after administration of the different drug formulations. Particular attention was paid to sample preparation and stability. The extraction of itraconazole and its main metabolite hydroxy-itraconazole was optimized to provide a high recovery and minimal matrix effects. A developed and validated LC–MS/MS method was used for the quantification of the two compounds. Pharmacokinetic profiles for the different formulations were constructed and compared. Results The stability of itraconazole and hydroxy-itraconazole in dried VAMS samples of whole rat blood could not be guaranteed for more than a day when the samples were stored at room temperature. However, samples were stable for at least two weeks when stored at -80°C after sample preparation. Differences in pharmacokinetic profiles were observed for the tested drug formulations. Whole blood concentrations of itraconazole and its main metabolite were significantly higher after administration of three in-house produced formulations compared to concentrations obtained with a commercially available product. Moreover, these in vivo results could be partly related to in vitro dissolution rates of the various formulations. Conclusions VAMS is an attractive approach for bioavailability studies. Due to the low blood volumes per sampling point, the same rats can be used to compare various drug formulations. Therefore, the number of required animals can be drastically reduced. Moreover, this helps to suppress the inter-individual variability and strengthens the validity of results. [less ▲]

Detailed reference viewed: 36 (3 ULiège)
Full Text
Peer Reviewed
See detailComparaison de l'impact de deux méthodes d'apprentissage sur la sécurité d'administration des médicaments : stages cliniques versus simulation
Servotte, Jean-Christophe ULiege; Galerin, Catherine ULiege; Ghuysen, Alexandre ULiege et al

Conference (2017, September 12)

Introduction Drug administration is the act nurses most frequently do. However, 50% of errors occur during administration. The damage these errors causes to patients, results in excess mortality rates and ... [more ▼]

Introduction Drug administration is the act nurses most frequently do. However, 50% of errors occur during administration. The damage these errors causes to patients, results in excess mortality rates and health care costs, hence leading to a major public health problem. Therefore, it is advisable to consider the training of future nurses on the practice of this delicate act. The objective of this study is to evaluate the impact of teaching by simulation combined with the internship on the safety administration of intravenous drugs by nursing students, compared to just the internship alone. Material and method A selection of 99 students from the bachelors’ block two of the Namur-Liege-Luxembourg Higher Institute of Nursing met the inclusion criteria under consideration. They were divided into two groups, one experimental group which participated in a simulation session and a control group, the latter did not participate in the simulation session. At the start of the research, all students were assessed by an objective structured clinical examination (OSCE) with the theme of modifying infusion and syringe flow rates. They were also asked to complete a questionnaire concerning their knowledge and self-efficacy feeling related to drug administration. The experimental group then participated in the simulation sessions. The experimental group and the control group also went into four weeks of training in medical or surgical services before participating in the second stage of the study. The latter consisted of the same tests and questionnaires as stage one of the study. The evolution of the results of the two groups was first observed separately before being compared. Results The majority of the results shows that the simulation improves, in a way significantly more important than the clinical course, the acquisition of skills and knowledge, as well as the feeling of self-efficacy in drug administration. On the other hand, the assessment of the level of stress linked to drug administration and the professional attitude evaluated during the OSCE were not significantly more improved by the simulation than by the training alone (stress: p-value = 0.8269, professional attitude = 0.9857). Conclusions For the students in the experimental group, the simulation showed a positive impact on the skills, knowledge and feeling of self-efficacy associated with drug administration. Changes and continuation of the study would make it possible to go further in the generalization of results, in the evaluation of learning outcomes, and to attest to their sustainability. [less ▲]

Detailed reference viewed: 40 (4 ULiège)
Full Text
See detailFrom seed to vegetable and from vegetable to seed : constructing a right to existence
Hecquet, Corentin ULiege

Conference (2017, September 12)

Detailed reference viewed: 24 (1 ULiège)
Full Text
See detailManaging and authenticating non-institutional users in Alma: two experiences
Brownlie, Helen; De Groof, Robert ULiege; Renaville, François ULiege

Conference (2017, September 12)

The management of patron information within Alma is primarily reliant on two systems – the creation and updating of patron information by an external system such as student management or HR systems or ... [more ▼]

The management of patron information within Alma is primarily reliant on two systems – the creation and updating of patron information by an external system such as student management or HR systems or internally within Alma itself. A recent survey of the Alma community indicated the majority of institutions utilize a mixture of these external and internal processes. In addition to providing access to affiliated staff and students more than 89% of institutions responded that they provided user accounts to non-affiliated users such as the general public, members of other academic institutions, alumni, etc. Providing authenticated access to library services for the latter group relies heavily on Alma for password management. This presentation will outline the processes in place at the University of Otago and at the University of Liège for managing and authenticating non-institutional users and the possible effect of Ex Libris' proposed changes to internal authentication. [less ▲]

Detailed reference viewed: 66 (10 ULiège)
See detailLiDAR aérien et autres nuages de points pour la cartographie multi-échelles
Poux, Florent ULiege; Neuville, Romain ULiege; Kasprzyk, Jean-Paul ULiege et al

Conference (2017, September 12)

Utilisation de nuage de points pour la cartographie 3D multi-échelles. Exemples d'utilisation et définition de workflows pour assurer l'interopérabilité lors de la fusion de données issues de différents ... [more ▼]

Utilisation de nuage de points pour la cartographie 3D multi-échelles. Exemples d'utilisation et définition de workflows pour assurer l'interopérabilité lors de la fusion de données issues de différents capteurs. [less ▲]

Detailed reference viewed: 41 (9 ULiège)
Full Text
See detailContent Working Group Report 2016-2017
Renaville, François ULiege; Varjabedian, Kathy

Conference (2017, September 11)

Report on the activities in 2016-2017 of the Content Working Group (previously Knowledge Base Advisory Board [KBAB]).

Detailed reference viewed: 47 (11 ULiège)
Full Text
See detailA tiny magic drawing board to track the penetration of magnetic flux in superconductors
Silhanek, Alejandro ULiege

Conference (2017, September 11)

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit ... [more ▼]

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit cards and computer hard drives. Here we experimentally show that a similar principle can be applied for imprinting the trajectory of quantum units of flux (vortices), travelling in a superconducting film (Nb), into a soft magnetic layer of permalloy (Py). In full analogy with the magnetic drawing board, vortices act as tiny magnetic scribers leaving a wake of polarized magnetic media in the Py board. The mutual interaction between superconducting vortices and ferromagnetic domains has been investigated by the magneto-optical imaging technique. For thick Py layers, the stripe magnetic domain pattern guides both the smooth magnetic flux penetration as well as the abrupt vortex avalanches in the Nb film. It is however in thin Py layers without stripe domains where superconducting vortices leave the clearest imprints of locally polarized magnetic moment along their paths. In all cases, we observe that the flux is delayed at the border of the magnetic layer. Our findings open the quest for optimizing magnetic recording of superconducting vortex trajectories. [less ▲]

Detailed reference viewed: 17 (0 ULiège)
Peer Reviewed
See detailWho are “the people” in populist rhetoric? The case of the “Front National” (FN) and the “Freiheitliche Partei Österreichs” (FPÖ)
Debras, François ULiege

Conference (2017, September 09)

In recent years, the “Front National” (FN) in France has claimed to be the “defender of the people” and “guarantor of their interests”. In 2017, the campaign slogan of Marine Le Pen, party leader and ... [more ▼]

In recent years, the “Front National” (FN) in France has claimed to be the “defender of the people” and “guarantor of their interests”. In 2017, the campaign slogan of Marine Le Pen, party leader and candidate in the presidential election, was “in the name of the people”. In Austria, the “Freiheitliche Partei Österreichs” (FPÖ) stood as the “voice of the oppressed majority”. The party is demanding “a direct democracy in order to let the people speak”. These elements lead us to question the notion of “the people”. How should we define “the people”? What reality does it refer to? What are the underlying political and ideological issues? Firstly, to answer this question, I aim to clarify the term “the people” in populist rhetoric. The FN and the FPÖ are often described as “far-right parties”. However, many scholars also refer to them as “populist parties”. These terms clearly need explaining. Secondly, this work will analyse the political discourse of the FN and the FPÖ. The focus will be on the political programmes and oral communication coming from their principal representatives. This analysis is discursive. It isn’t an examination of the work performed by party supporters or members (parliamentary work, action in local authorities, etc.). Apparently, the rhetoric from both parties is structured around two dichotomies: 1) the removal of social boundaries in favour of a people/elite opposition; 2) the affirmation of cultural boundaries in favour of an opposition between natives to a country and foreigners. I will explain why these notions of social and cultural boundaries have a prominent place in rhetoric in line with populist theory. The desire to suppress social boundaries, allows us to identity a first issue: sovereignty. The affirmation of cultural boundaries illustrates a second issue: unity. Finally, a third issue is transmitted through the notion of sovereignty and unity: identity. To conclude, I will return to the classification of the “Front National” and the “Freiheitliche Partei Österreichs” as “right-wing-populist” parties. I will end by answering the question: “who are ‘the people’”? This will explain why populist rhetoric responds to a feeling of unease within society and, more generally, within Western democracies. [less ▲]

Detailed reference viewed: 55 (2 ULiège)
Full Text
Peer Reviewed
See detailTowards a web-based platform for plotting, visualizing and enriching diachronic semantic maps: With a case study on the Greek and Egyptian temporal semantic field
Georgakopoulos, Athanasios ULiege; Polis, Stéphane ULiege

Conference (2017, September 09)

Semantic maps aim at detecting cross-linguistic regularities and recurrent patterns in semantic structure (Haspelmath 2003). This method was initially applied to the grammatical domain, mostly in a ... [more ▼]

Semantic maps aim at detecting cross-linguistic regularities and recurrent patterns in semantic structure (Haspelmath 2003). This method was initially applied to the grammatical domain, mostly in a synchronic perspective (with some exceptions, see, e.g., van der Auwera & Plungian 1998). Recent research, however, has drawn attention to the lexical domain, showing that the model can also include lexical semantics (see, e.g., François 2008). Intimately related to the semantic map method has been the issue of finding appropriate ways of creating those maps and of capturing visually the semantic regularities. Up until recently, the maps were plotted and drawn manually. However, Regier et al. (2013) showed that a good approximation algorithm exists for inferring semantic maps based on polysemy data. Elaborating on their method, this paper aims to demonstrate that information about the directionality and the weight of the edges can be automatically added, thereby providing valuable information regarding the paths of semantic extensions and their frequency. In order to illustrate the method, we take the example of the semantic extension of time-related lexemes (e.g. TIME, HOUR, SEASON, DAY) in Ancient Greek (8th – 1st c. BC) and Ancient Egyptian – Coptic (26th c. BC – 10th c. AD). Both languages give access to significant diachronic material, allowing us to trace long term processes of semantic change. The results of our diachronic investigations are then checked against databases giving information on synchronic polysemies (e.g., List et al. 2014). In doing so, we also assess the adequacy of the use of polysemy as a tool to investigate semantic change. [less ▲]

Detailed reference viewed: 34 (3 ULiège)
See detailInscription, iteration, transformation
De Winter, Mélanie ULiege; Slomian, Cynthia ULiege

Conference (2017, September 09)

In “Knowledge in policy”, Freeman and Sturdy propose a phenomenology with the aim of “knowing knowledge” (Freeman & Sturdy, 2014, p. 2). Knowledge can have different forms called “inscribed”, “embodied” ... [more ▼]

In “Knowledge in policy”, Freeman and Sturdy propose a phenomenology with the aim of “knowing knowledge” (Freeman & Sturdy, 2014, p. 2). Knowledge can have different forms called “inscribed”, “embodied” and “enacted”. This framework is presented as a way to categorize and describe the form, the circulation and the transformation of knowledge in policymaking. In this paper, we intend to focus on inscribed knowledge, and particularly on documents conceived as essential artefacts of public policies (Freeman & Maybin, 2011). Freeman and Sturdy defined inscribed knowledge as “written down in texts, or represented in pictures and diagrams; or it may be incorporated into instruments, tools and machines, among other things”(Freeman & Sturdy, 2014, p. 10). This form of knowledge is particularly “stable”, “easily reproducible” and “highly mobile” so “it can be communicated or made available to many different individuals separated in time and/or space”(Freeman & Sturdy, 2014, p. 10). This statement draws from works in sociology of science and technology. These works, especially Latour’s (1987) studies of the laboratory work and Law's (1986) analysis of control at distance particularly emphasize the power of inscriptions in constraining social action over time and space. Through the analysis of the implementation of two policy plans in the Belgian healthcare sector, we question and put the role of inscriptions in perspective with moments of enactment, by focusing on meetings. We intend to show that some documents are crucial at particular moments and lose value at other moments. In the same vein, we also aim to show the importance of iteration, moments, duration, and rhythms in public action. By doing so, we show how the public policy itself is transformed through time, documents and meetings. We address this issue by drawing on two PhD researches focusing on the devising and implementation of the policy plans mentioned above. By relying on interviews, observations and document analysis, we describe the policy strategies inscribed in documents as well as key moments of both documents’ trajectories. In so doing, we emphasise that documents and meetings articulate with each other in an iterative process that in turn transforms the public policies themselves. [less ▲]

Detailed reference viewed: 18 (2 ULiège)
Full Text
See detailRound table. Quaternary Prevention(P4) or first do not harm.
Jamoulle, Marc ULiege; Widmer, Daniel; La Valle, Ricardo et al

Conference (2017, September 09)

Quaternary prevention (P4), born from a reflection on the doctor-patient relationship, began as an answer of family doctors facing overmedicalization. It aims to protect the patient or population against ... [more ▼]

Quaternary prevention (P4), born from a reflection on the doctor-patient relationship, began as an answer of family doctors facing overmedicalization. It aims to protect the patient or population against the danger of medicine. Harmful effects can appear with preventive activities (example: prostate cancer screening by PSA) as well as by therapeutic interventions (example: disruptive medicine). P4 promoted by the World Organization of Family Doctors (WONCA) is practiced in different ways around the world through the activity of the WONCA Special Interest Group on Quaternary Prevention and Overmedicalisation (P4&O). There are multiple initiatives and backgrounds of P4. All these multiple initiatives that lead to P4 have their origin in denouncing the inadequacies of the Hegemonic Medical Model and the excesses perpetrated in the pursuit of profit. There are many schools of thought that try to solve this situation, such as "Medicines Based on ..." These contributions are valuable but usually point to a single dimension of the problem so they do not change the situation too much. The P4, however, have understood the centrality of the political and economic dimensions and, that is why, P4 has become a movement. P4 has understood that the root causes far exceed the limits of medicine, have understood that the problem includes ethical, political, economic and epistemological aspects of medicine. It is for this reason that the definition of P4 has shifted to the function of foundational idea since the movement that has been generated around this concept has surpassed this initial definition centered in a, yet complex, but still medical vision. P4 has understood that a new model of medicine and a new pact with society is necessary. P4 is a counter-hegemonic movement with predominant development in peripheral countries. This movement includes many other perspectives developed in the central countries but is the only one that has an ideological position that discusses the current paradigm of medicine that legitimates the same causes that give rise to P4, proposing to think a new way of practice the medicine that includes Ethical values, other forms of knowledge and the return to human medicine for humans with place for uncertainty, compassion, the encounter between people and non-commodified. Justice in health care is a central aspect of this new way of conceiving the medicine that we propose. Remember what Rudolf Virchow said in the nineteenth century "Physicians are the natural advocates of the poor and social problems fall largely under their jurisdiction. Medicine is a social science, and politics is nothing more than medicine in large scale". We must reformulate our contract with society and for this we must be very clear that our loyalty must always be with the sick, the poor and those who are weak. For this new contract we must also take into account the magnitude of the power that has been given to us and to live up to such responsibility. In the Rio manifesto (2016) we propose to “Avoid and denounce the naturalization of: hunger, exclusion, manipulation, inequality, violence, racism, exploitation, which harm health more than "diseases"” . There is a better and fairer world, let's fight to get it! More about P4 on www.ph3c.org/p4 [less ▲]

Detailed reference viewed: 319 (0 ULiège)
Full Text
See detailCreativity and Innovation
Artige, Lionel ULiege

Conference (2017, September 08)

Detailed reference viewed: 28 (0 ULiège)
Full Text
See detailOptimization and machine learning for smart-microgrids
Cornélusse, Bertrand ULiege

Conference (2017, September 06)

Detailed reference viewed: 33 (1 ULiège)
Peer Reviewed
See detailGoing Inside Structural and Physicochemical Properties of Polymers using Ion Mobility-Mass Spectrometry
Haler, Jean ULiege; de la Rosa, Victor R.; Far, Johann ULiege et al

Conference (2017, September 06)

Detailed reference viewed: 39 (2 ULiège)
Full Text
Peer Reviewed
See detailOrdovician to Early Devonian from South America: a state of the art - review
Rubinstein, C.V.; Garcia Muro, V.J.; Gerrienne, Philippe ULiege et al

Conference (2017, September 05)

Detailed reference viewed: 25 (0 ULiège)
Full Text
See detailElectrochemical Mechanism of TiMnSn4 as Anode Material for Li-ion Batteries
Lippens, Pierre-Emmanuel; Jumas, Jean-claude; Olivier-Fourcade, Josette et al

Conference (2017, September 04)

Li-ion batteries are widely used in portable electronic devices, electric vehicles or energy storage systems for intermittent energy sources, due to their high energy density, light weight and long cycle ... [more ▼]

Li-ion batteries are widely used in portable electronic devices, electric vehicles or energy storage systems for intermittent energy sources, due to their high energy density, light weight and long cycle life. However, the performances must be continuously improved, which requires the development of new electrode materials. Carbon is commercially used for the anode but its specific capacity is limited to 372 mAh g-1 due to the electrochemical insertion mechanism involving only 1 Li per 6 C. In order to increase the specific capacity, Sn was considered as electrochemically active element although it is about ten times heavier than C. This is due to the alloying/dealloying mechanism with up to 4.4 Li per Sn, providing a theoretical capacity of 992 mAh g-1. However, the Sn ↔ Li4.4Sn reversible transformations are associated with large volume variations responsible for capacity fading.Tin intermetallic compounds of the form MSnx, where M is a transition metal, were proposed to overcome this problem. The first lithiation transforms the pristine material into Li7Sn2/M nanocomposites where the M nanoparticles are expected to buffer the volume variations [1]. However, the delithiation process is more complex involving a possible back reaction of M with Sn, which could play a crucial role in the cycling stability. Such reaction was observed for Ni3Sn4 [2] and MnSn2 [3] but not for FeSn2 [4]. In addition, TiSnx intermetallics show very poor electrochemical activity [5]. The present work concerns the tin based ternary phase TiMnSn4 as new anode material for Li-ion batteries. This compound is of particular interest because it contains two different transition metals that are expected to react differently with Sn during delithiation, if we consider the previous results obtained for MnSnx and TiSnx. TiMnSn4 was obtained by mechanosynthesis to optimize the microstructure and characterized by different experimental tools and DFT (density functional theory) calculations. We propose an analysis of the reaction mechanism based on operando X-ray diffraction and 119Sn Mössbauer spectroscopy combined with a DFT interpretation of the electrochemical potential curve. References 1) M. Chamas, M.T. Sougrati, C. Reibel, P.E. Lippens, Chem. Mater. 25, 2410 (2013). 2) K.K.D. Ehinon, S. Naille, R. Dedryvère, P.E. Lippens, J.C. Jumas, D. Gonbeau, Chem. Mater. 20, 5388 (2008). 3) A. Mahmoud, M. Chamas, J.C. Jumas, B. Philippe, R. Dedryvère, D. Gonbeau, I. Saadoune, P.E. Lippens, J. Power Sources 244, 246 (2013). 4) M. Chamas, P.E. Lippens, J.C. Jumas, K. Boukerma, R. Dedryvère, D. Gonbeau, J. Hassoun, S. Panero, B. Scrosati, J. Power Sources 196, 7011 (2011). 5) A. Ladam, L. Aldon, P.E. Lippens, J. Olivier-Fourcade, J.C. Jumas, C. Cenac-Morthe, Hyperfine Interact. 237, 51 (2016). [less ▲]

Detailed reference viewed: 22 (5 ULiège)
Full Text
Peer Reviewed
See detailSpatial hybridization and its implications on housing in Brussels and Amsterdam
Uyttebrouck, Constance ULiege; Teller, Jacques ULiege

Conference (2017, September 04)

This paper aims to address the effects of labour market mutations on housing through an analysis of “spatial hybridization”, focusing on the qualitative comparison of Brussels and Amsterdam. The objective ... [more ▼]

This paper aims to address the effects of labour market mutations on housing through an analysis of “spatial hybridization”, focusing on the qualitative comparison of Brussels and Amsterdam. The objective is to provide first elements of context, methodology and results of a wider on-going research. In the first section, we highlight underlying trends, in particular the emergence of NWoW in a context of new economy, and current issues on the housing market (flexibilisation, commodification, gentrification). Then, we discuss the relevance of applying path dependence in our research, before presenting our two case-study cities from a historical perspective and pointing out innovative practices and the current public discourse. Finally, we discuss differences and similarities through four elements of comparison: functional mix at the block level, service-oriented housing, economic and housing paths. The discussion is based on our literature review, early policy analysis and interviews with key-stakeholders. [less ▲]

Detailed reference viewed: 36 (14 ULiège)
Full Text
Peer Reviewed
See detailIntrasite spatial analysis based in a Geographic Information System and apply to extensive Middle Palaeolithic open-air sites in northern France. The example of Caours (Somme, France).
Moreau, Gwénaëlle ULiege; Locht, Jean-Luc; Auguste, Patrick

Conference (2017, September 02)

During middle Palaeolithic, northern France was occupied only by Neanderthals groups. However, the succession of glacial and interglacial periods explain a complex and discontinuous settlement, which ... [more ▼]

During middle Palaeolithic, northern France was occupied only by Neanderthals groups. However, the succession of glacial and interglacial periods explain a complex and discontinuous settlement, which involved complication in the study of the population dynamics at regional scale. Thereby, some aspects of Neanderthals behaviour are still obscure: in many cases, the sites function have to be precise. The intrasite spatial analysis will help us to answer those questions through the description of human activity areas and their interactions. However, for Middle Palaeolithic sites, we can’t see systematically on the field the spatial organisation directly, we sometimes need modelization. Therefore, we started to build a spatial analysis protocol based on a Geographic Information System and rely on sites of Caours and Beauvais (France). They are two open air sites that are exceptionally well preserved and displaying a large amount of faunal and lithic rests. Our protocol’s aim is showing the existence of a spatial organisation in form of artefacts concentration area. We first hypothesize with mesh analysis – or density, widely used in archaeology. Nevertheless, this method is limited by subjective choices like that of the mesh analysis. For that reason, we decided to use another methodology based on artefacts density but also on the distance between each other: The Kernel Density Estimation. Then, we will specified the function of this areas in a life space and their interactions through the spatial distribution of different lithic artefacts and faunal remains. [less ▲]

Detailed reference viewed: 22 (4 ULiège)
Full Text
See detailA bottom-up approach to the analysis of deliberate metaphors in Belgian political discourse
Heyvaert, Pauline ULiege

Conference (2017, September 01)

Detailed reference viewed: 17 (0 ULiège)
Full Text
See detailMunicipalities’ understanding and importance of the concept of Smart Cities: an exploratory analysis in Belgium
Desdemoustier, Jonathan ULiege; Crutzen, Nathalie ULiege; Giffinger, Rudolf

Conference (2017, September 01)

Even if an increasing number of scientific publications are dealing with it, the concept of “smart city” is not yet well defined and it is not fully understood (Anthopoulos and Vakali 2012; Caragliu,Bo ... [more ▼]

Even if an increasing number of scientific publications are dealing with it, the concept of “smart city” is not yet well defined and it is not fully understood (Anthopoulos and Vakali 2012; Caragliu,Bo, and Nijkamp 2009; Lazaroiu and Roscia 2012). Due to the lack of a proper conceptualization, defined method or credentials for smart cities (Angelidou 2015; Nam and Pardo 2011), cities across the geographical spectrum claim themselves 'smart' with self-congratulatory note (Hollands 2008). Despite this increasing popularity of smart cities, there are few critical discourse and rigorous analytical or statistical analyses of the concept and its application on urban territories (Caragliu, Bo, and Nijkamp 2009; R G Hollands 2015; Kitchin 2015; Vanolo 2014). This paper aims at understanding where Belgian municipalities stand in the field of smart city in 2016. How Belgian municipalities approach the phenomenon smart city? Which focus in smart city -sustainable, technologic, creative and human-do attract Belgian municipalities? The paper answers to these questions thanks to a comprehensive territorial analysis of the country, a presentation of current trends on smart cities in the three Belgian regions, and the construction of a typology of municipalities’ understandings of the phenomenon. It also analyses how these understandings impact priorities and smart city developments of Belgian municipalities. It investigates how they affect municipal priorities in the six dimensions of the smart city and their state of development in some key smart city fields. Finally, it examines how do this typology is related to the municipal perception of difficulty to set up smart city projects and the relevance of the concept for their territories. The data used comes from the results of a quantitative research amongst Belgian municipalities carried out in 2016 by the Smart City Institute. The research points out key statistical observations around the smart city phenomenon in Belgium. A typology with four different understandings (technological, holistic, specialized and inexistent) emerged from the analyses. [less ▲]

Detailed reference viewed: 57 (0 ULiège)
Full Text
Peer Reviewed
See detailPast mining areas as rural capital – Perspectives from Bucovina and Wallonia
Schmitz, Serge ULiege; Dubois, Charline ULiege; Vanderheyden, Vincent ULiege et al

Conference (2017, September)

In this paper, we consider old mining sites in two very different contexts, a post-socialist Carpathians area and a Western European area that knew precocious industrialisation. How these past mining ... [more ▼]

In this paper, we consider old mining sites in two very different contexts, a post-socialist Carpathians area and a Western European area that knew precocious industrialisation. How these past mining areas could develop and enhance rural development and heritage landscapes? [less ▲]

Detailed reference viewed: 24 (1 ULiège)
Full Text
Peer Reviewed
See detailPhoto-Ionization GCxGC-HRTOF/MS for Aviation Fuel Characterization
Giri, Anupam ULiege; Courtiade; Racaud et al

Conference (2017, September)

Detailed reference viewed: 24 (1 ULiège)
Full Text
Peer Reviewed
See detailPhysical activity counseling: Creation of a formation for students in physical education
Lombard, Gilles ULiege; Jansen, Adrien ULiege; Cloes, Marc ULiege

Conference (2017, September)

The WHO (2015) estimates to 1 million deaths par year due to physical inactivity in Europe. The promotion of children physical activity is the starting point as active children are more likely to remain ... [more ▼]

The WHO (2015) estimates to 1 million deaths par year due to physical inactivity in Europe. The promotion of children physical activity is the starting point as active children are more likely to remain active in adulthood than the others (ACSM et al., 2015). According to ecological model (Booth, 2001) school and teachers are essentials determinants to encourage children in this way. Then, we decided to implement a unit aiming to train physical education students to be able to counselling children and sedentary people. The first step was to interview 15 field professionals supposed to be involved in physical activity promotion in order to identify the essential factors to point out. The second step was to design a formation plan allowing to fill gaps in students skills. The last point will be to implement this formation and to analyse the impact on students actions. [less ▲]

Detailed reference viewed: 34 (1 ULiège)
Peer Reviewed
See detailPedagogical and didactic adaptations of a mathematics course to a student-centred education in an architecture programme
Jancart, Sylvie ULiege; Seijkens, Nicolas ULiege; Silvestre, Aude ULiege

Conference (2017, September)

This presentation will focus on both didactic and pedagogical reflections teaching mathematics in architecture programme in order to support the experience and learning of first year students. Led in ... [more ▼]

This presentation will focus on both didactic and pedagogical reflections teaching mathematics in architecture programme in order to support the experience and learning of first year students. Led in order to promote the students’ intrinsic motivation (Deci & Ryan, 1985) and support our didactic reflections, an inventory of mathematical difficulties encountered by freshmen in their program has been established. This inventory also served the purpose of demystifying mathematics and valuing them through a place in a cursus more rooted in the profession (Wigfield and Eccles, 2000). Sorted according to the skills involved, the relevant difficulties pointed out by students were mostly found in two courses, topography and structure. Several examples will be presented demonstrating the lack of transfer between the disciplines, students studying formulas without understanding them. To counter this lack of transfer, pedagogical reflections about our current teaching were developed thanks to the Feedback First-Year Project (FFYP) developed in the University of Liège. In this context, three significant devices set up in mathematics were developed. The first one is an online-oriented prerequisite test implemented on our academic online platform. The second one is an intermediate test based on true/false quizzes and the third one a simulation of the real exam with peer interventions. According to Nicol’s recommendations (2009), each of these features is completed with specific feedbacks specially designed in order to impact several dimensions of their motivation. [less ▲]

Detailed reference viewed: 58 (3 ULiège)
Peer Reviewed
See detailSmallest salable patent practicing unit (SSPPU) and component licensing: Why $1 is not $1?
Gautier, Axel ULiege

Conference (2017, September)

Detailed reference viewed: 21 (0 ULiège)
Peer Reviewed
See detailLocals in the Wasteland: The Non-Intended Side Effects of (In)Sensible Local Participatory Technology Development.
Parotte, Céline ULiege

Conference (2017, September)

Implementing high-level radioactive wastes programs on a territory remain a sensitive step for nuclear waste management organizations. At this stage, the preferred solution of radioactive wastes programs ... [more ▼]

Implementing high-level radioactive wastes programs on a territory remain a sensitive step for nuclear waste management organizations. At this stage, the preferred solution of radioactive wastes programs (geological disposal) and their technological developments become highly visible and this is why the new instruments and strategies such as participatory technology development (PDT) have been adopted to tackle the territorial development of geological disposal technology. Considering the coproduction between territory and program (Jasanoff 2004), this presentation focuses on two siting processes of radioactive wastes programs, in France and in Canada to analyze the influence of in(sensible) local participatory technology development strategy and the influence of invited critics (Wynne 2007) on the industrial project. Our results show that frameworks of the participatory technology development have been designed very differently (with or without publics). Consequently, two undesirable, mostly non-intended side effects of information local committees (non) integration have appeared. In France, a closed PDT transformed invited critics as non-invited one. In Canada, a weak engagement of publics has occurred with an opened PDT. In both case, new socio-technical adjustments have occurred in those programs. [less ▲]

Detailed reference viewed: 11 (1 ULiège)
Full Text
See detailTD-GCxGC-HRTOFMS in biological applications 
Focant, Jean-François ULiege; Pesesse, Romain ULiege; Dubois, Lena ULiege et al

Conference (2017, September)

Detailed reference viewed: 16 (1 ULiège)
Full Text
See detailOnline ICPC-2 & Q-Codes: General Practice / Family Medicine Online Multilingual Terminology & Knowledge Base
Jamoulle, Marc ULiege

Conference (2017, August 31)

Availability of ICPC-2 and Q-Codes in URI format

Detailed reference viewed: 32 (0 ULiège)
Full Text
Peer Reviewed
See detailEvidence-Based Practice Applied To Voice Therapy
Morsomme, Dominique ULiege

Conference (2017, August 30)

Voice therapy supports dysphonic patients. To rehabilitate the dysphonic patient, each voice therapist uses different exercises. These exercises are mostly described in books, which offer a step-by-step ... [more ▼]

Voice therapy supports dysphonic patients. To rehabilitate the dysphonic patient, each voice therapist uses different exercises. These exercises are mostly described in books, which offer a step-by-step acquisition model of the required vocal motor gesture and propose techniques of voice rehabilitation. However, the same technique can cover different therapeutic aspects. Van Stan et al. (2015) recently suggested a taxonomy to clarify therapeutic programs, detail their content and classify them according to their direct intervention category (auditory, vocal function, somatosensory, musculo-skeletal, and respiratory). Sensitize the patient to vocal hygiene, teach the basics of respiratory support, adjust the subglottal pressure, encourage vocal placement in the resonators, replace the wrong motor gesture with another healthier, controlling glottal attacks are the rehabilitation principles basics for voice disorders. All exercises are generally based on raising awareness of both inadequate and adequate vocal gesture by increasing proprioception. The final goal is that the patient gradually regains control over his vocal gesture. To ensure the best treatment to the patient, our approach must rely on the evidence based practice (EBP) principles. The questions we must ask ourselves as clinician are: Which voice techniques, for which patients, with which diagnoses, in what environments, with what effectiveness? This workshop attempts answering the question: how can a voice therapist implement EBP in his clinical practice in order to ensure the best treatment to his patient? To illustrate the process, I opted for a therapeutic approach that has been questioned: manual therapy adapted to voice therapy. I will address the notion of therapeutic efficiency of the manual therapy in the light of the scientific literature, knowing that level 1A or 1B studies on the classification of evidence levels are rare in the field of vocology (Benninger, 2011). To end the workshop, I will present short video sequences of voice therapy with three patients and their therapist who have kindly accepted to be filmed during their sessions. These sequences illustrate how manual therapy is implemented in the treatment of these patients who suffer from presbyphonia, muscle tension dysphonia and nodules respectively. [less ▲]

Detailed reference viewed: 23 (0 ULiège)
Peer Reviewed
See detailVoice use among music theory teachers
Schiller, Isabel ULiege; Morsomme, Dominique ULiege; Sfez, Lou et al

Conference (2017, August 30)

In Belgium, there is a particular group of music teachers referred to as music theory teachers. Working at music schools, they convey theoretical knowledge and practical musical skills to groups of ... [more ▼]

In Belgium, there is a particular group of music teachers referred to as music theory teachers. Working at music schools, they convey theoretical knowledge and practical musical skills to groups of individuals who learn music during their free-time. Even though music theory teachers use both speaking and singing voice intensively at work, little is known about their voice use profiles. This study investigated the vocal loading among French-speaking music theory teachers. Objectives were (1) to describe their professional and extra-professional vocal loading, (2) to determine the relationship between vocal loading and background noise level and (3) to investigate whether objectively measured vocal loading is reflected in music theory teachers’ auto-evaluation of their voice. Using voice dosimetry, 13 music theory teachers were monitored for one workweek. Parameters analysed were F0, voice sound pressure level (SPL), phonation time, vocal loading index (VLI) and background noise SPL. At the end of each monitoring day, subjects self-assessed their voice use by means of visual analogue scales. Results revealed (1) significantly higher vocal loading in the professional context than in the extra-professional context, (2) significant positive correlations between background noise level and the parameters F0, voice SPL and phonation time and (3) significant correlations between the VLI and auto-evaluation data (e.g. voice quality and vocal fatigue). These results highlight that teaching music theory is a profession with high vocal demands. At work, music theory teachers are exposed to high background noise, which seems to influence their voice use and may potentially contribute to the development of voice problems among this population. Visual analogue scales provide a promising tool to subjectively investigate vocal loading among music theory teachers. [less ▲]

Detailed reference viewed: 18 (0 ULiège)
Peer Reviewed
See detailGiving an account of fictional discourse. Meinongian logics versus modal logics
Leclercq, Bruno ULiege

Conference (2017, August 29)

Detailed reference viewed: 15 (1 ULiège)
Full Text
See detailUniversité d'été du CIFEN - Atelier 2 :Tâches complexes dans les formations professionnalisantes
Francois, Nathalie ULiege; Simons, Germain ULiege

Conference (2017, August 25)

Introduction et synthèse de l'atelier consacré aux tâches complexes dans les sections professionnalisantes de différents niveaux d'enseignement en Fédération Wallonie Bruxelles.

Detailed reference viewed: 14 (0 ULiège)
Full Text
See detailPrésentation de la thématique de recherche et du programme de la journée
Simons, Germain ULiege

Conference (2017, August 25)

Dans cette introduction, G. Simons montre comment la notion de "tâche complexe" s'est construite progressivement en Communauté française de Belgique depuis le Décret "Missions". Ensuite il propose ... [more ▼]

Dans cette introduction, G. Simons montre comment la notion de "tâche complexe" s'est construite progressivement en Communauté française de Belgique depuis le Décret "Missions". Ensuite il propose différentes questions qui baliseront la réflexion tout au long de la journée. Enfin, il présente le programme du colloque et remercie toutes les personnes qui ont contribué à son organisation. [less ▲]

Detailed reference viewed: 22 (1 ULiège)
Peer Reviewed
See detailVariation of tree allometry and aboveground biomass in central African forests
Loubota Panzou, Grâce Jopaul ULiege; Ligot, Gauthier ULiege; Bastin, Jean-François et al

Conference (2017, August 23)

Quantifying the biomass and carbon stocks contained in tropical forests has become an international priority for the implementation of the REDD+ initiative. Many techniques exist to estimate forest ... [more ▼]

Quantifying the biomass and carbon stocks contained in tropical forests has become an international priority for the implementation of the REDD+ initiative. Many techniques exist to estimate forest biomass at different spatial scales, but all ultimately rely on allometric equations calibrated on destructive measurements of individual tree biomass, in order to convert forest inventory data into biomass estimates. For many tropical forest ecosystems, that are structurally complex and species rich, these allometric equations have not yet been developed and general allometric equations are being used instead, with possibly local adjustment of tree allometry with non-destructive data. Variation in height-diameter allometry and in crown-diameter allometry across forest types and environmental conditions have been demonstrated to be of extreme importance for the estimation of biomass and carbon stocks in tropical forests, but yet poorly explored in central Africa. In this study we aimed to determine the variation in tree height-diameter and crown-diameter allometries across central African forests and the consequences for biomass and carbon stocks. Tree allometry data were collected in two of semi-deciduous forest sites in northern Republic of Congo that have vastly different substrate and soils (clay soils on quartzite and sandy soils on sandstone plateau), and forest communities, but similar rainfall regimes. These data will be analyzed to test two hypotheses: (i) tree allometry strongly varies across forest types with contrasted environmental conditions (and specifically soils), and (ii) both allometry and forest structure contributed to the greater biomass of the site on rich soil (quartzite substrate). Our newly collected data for two sites in northern Congo will be confronted to existing allometry and inventory data available elsewhere in the Congo basin to get a broader picture of allometric variations and its consequences for the estimation of biomass and carbon stocks. [less ▲]

Detailed reference viewed: 61 (3 ULiège)
Full Text
See detailVideo and camera traps to investigate animal ecophysiology and enhance wildlife management: case study on bees and elephants interactions in Gabon.
Ngama, Steeve ULiege; Bindelle, Jérôme ULiege; Vermeulen, Cédric ULiege

Conference (2017, August 23)

Crops are often sources of conflict between humans and wildlife. Wildlife damage to crops can drastically reduce income, amplifying poverty and creating a negative perception of wild animal conservation ... [more ▼]

Crops are often sources of conflict between humans and wildlife. Wildlife damage to crops can drastically reduce income, amplifying poverty and creating a negative perception of wild animal conservation among rural people. In this context, crop-raiding animals like elephants quickly become “problem animals”. To deter elephants from raiding crops beehives have been successfully employed in East Africa while providing honey for the farmers. Whether such a technique could work on forest elephants (Loxodonta Africana cyclotis) in Central Africa is still unknown. An ecophysiology-based trial consisting on bees and elephants interactions assessment was conducted in Gabon. It aimed to evaluate whether the presence of Apis mellifera adansonii, the African honey bee species present in Central Africa, deters forest elephants from feeding on experimental wild fruit trees. We suspected that bee physiology matters on bee defensive behavior and monitoring it through measuring bee activities can help better understand bees and elephants interactions. For this purpose video cameras were used to record activities of bees in fourteen beehives hung on seven wild trees (4 Irvingia gabonensis and 3 Sacoglottis gabonensis trees) each equipped with a camera trap to record elephants feeding behaviors on those trees. This experimental apparatus was monitored during 70 consecutive weeks from 2012 to 2013. We captured 8151 photos representing 4h31min42s of time spent by elephants at experimental trees and more than 75 videos of bees activities from where we extracted genuine results. Our results show a significant correlation between the effectiveness of beehives as deterrents of elephants and bee activity. Although elephant disturbance of hives does not inhibit honey production, there is a tradeoff between deterrence and the quantity of honey produced. More interestingly, to best achieve the dual goals of deterring elephants and producing honey colonies must maintain an optimum activity level of 40 to 60 bee movements per minute. Thus Apis mellifera adansonii bees can effectively deter elephants but beehives must be actively managed to maintain bees’ colonies at the optimum activity level. [less ▲]

Detailed reference viewed: 105 (3 ULiège)
Full Text
Peer Reviewed
See detailGroundless altruism: Why it makes sense to risk one's life for other people's money
Dumitru, Magdalena ULiege; Joergensen, Gitte

Conference (2017, August 22)

In a study where participants were asked to make a series of assessments in distinct circumstances, we show that altruistic agents may incur disadvantages in the name of values they do not believe in (i.e ... [more ▼]

In a study where participants were asked to make a series of assessments in distinct circumstances, we show that altruistic agents may incur disadvantages in the name of values they do not believe in (i.e., saving money) as long as they believe in the overarching category (e.g., it is a ‘good deed’ to recover other people’s money). Whereas previous research mostly targeted ultimate benefits (i.e., whether or not altruistic agents incur real disadvantages), the axiological basis of altruistic acts (i.e., whether or not they have the same worth to self and to others) has remained unchallenged. Here, we explored “groundless altruism” by asking participants to rate their agreement with the statement ‘Money is worth risking my life for’ before and after presenting them with an altruistic scenario. There was a dramatic increase in the proportion of ‘yes’ responses from the first to the second rating. Moreover, as predicted by the cultural group selection theory, the status of the agent (low-rank police employee v s. secret agent) was largely irrelevant. These findings suggest that social constructs such as categorisation have the potential to significantly influence human behaviour in various domains from moral psychology to work ethics to language learning. [less ▲]

Detailed reference viewed: 36 (1 ULiège)
See detailWell-defined polyvinylamine-based copolymers: synthesis by organometallic-mediated radical polymerization and use in gene transfection
Debuigne, Antoine ULiege; Dréan, Mathilde; Detrembleur, Christophe ULiege et al

Conference (2017, August 22)

Polyvinylamine (PVAm) presents valuable properties like affinity for many supports, pH responsiveness, metal binding capacity, polyelectrolytes complexation, and is used in various applications including ... [more ▼]

Polyvinylamine (PVAm) presents valuable properties like affinity for many supports, pH responsiveness, metal binding capacity, polyelectrolytes complexation, and is used in various applications including coatings, water purification or gas membrane separation. PVAm is commonly prepared by free radical polymerization of N-vinyl monomers followed by deprotection and release of the masked amino functions. However, examples of controlled synthesis of polyvinylamine-based copolymers are scarce because of the high reactivity of the propagating radicals deriving from non-conjugated N-vinyl monomers due to the lack of resonance stabilization. The present communication aims at reporting an efficient platform for producing tailor-made PVAms via organometallic-mediated radical polymerization (OMRP) of N-vinylacetamides followed by hydrolysis of the pendent amide moieties. In this case, cobalt(II) acetylacetonate was successfully used as controlling agent. The synthesis of a series of well-defined homopolymers, statistical and block copolymers with pendent primary and/or secondary amines having low dispersities, predictable molar masses and precise compositions, will be described. Finally, we will discuss the possible use of these polyvinylamine-containing copolymers as gene transfection agents. Some of them demonstrated high DNA transfection level in combination with high cell viability. [less ▲]

Detailed reference viewed: 85 (7 ULiège)
Full Text
See detailGestion de la biodiversité
Monty, Arnaud ULiege

Conference (2017, August 21)

Detailed reference viewed: 17 (1 ULiège)
Full Text
Peer Reviewed
See detailNarrative Misappropriations of Pokémon: How Fanarts and Fanfictions Playfully Feed and Reconfigure a Transmedia Universe
Barnabé, Fanny ULiege

Conference (2017, August 21)

As defined by Jenkins (2006), transmedia storytelling is intimately linked with creative practices of reception which take part in what we now call the “participatory culture” (Raessens, 2005; Jenkins ... [more ▼]

As defined by Jenkins (2006), transmedia storytelling is intimately linked with creative practices of reception which take part in what we now call the “participatory culture” (Raessens, 2005; Jenkins, 1992 and 2009). The audience plays, indeed, a key role in the construction of transmedia universes, given that “to fully experience any fictional world, consumers must assume the role of hunters and gatherers, chasing down bits of the story across media channels, comparing notes with each other via online discussion groups, and collaborating to ensure that everyone who invests time and effort will come away with a richer entertainment experience” (Jenkins, 2006: 21). Consequently, studying a media – in this case, the video game – through the lens of transmedia storytelling urges one to take into consideration how the public can participate, feed, or transform fictions by consuming them. Furthermore, in the field of game studies, it is all the more relevant to deal with the implication of players in the creative process since video games are historically and structurally related to the practice of misappropriation or detournement. As Genvo notes: “the creation of the first video game [Spacewar, 1962] already resulted from a playful act, which was expressed by the misuse of the conventional function of an MIT’s super calculator” (Genvo, 2008: 2). This original affinity now appears in a number of creative practices that prolong the game outside its primary space and enable it to seep into other medias: as fanfictions, modding or machinimas show, the video game is regularly apprehended by players not as a closed work to consume, but “more as [a] suit[e] of resources to be played with” (Newman, 2012: 123). This paper therefore seeks to study the impact of players’ misappropriations on the development of video games' fictional worlds. In this perspective, I will focus on a deeply transmedia license, the Pokémon saga, and on two creative practices that reconfigure games’ universes: fanarts and fanfictions. While amateur drawings and comics inspired by Pokémon GO have created narrative extensions from scratch about the barely characterized Team Leaders (Blanche, Candela and Spark), fan-authors have written thousands of texts that play with elements of the Pokémon universe in order to produce original stories. Yet, these textual and pictorial rewritings do not merely reuse narrative elements of Pokémon games; they also feature strictly playful components such as gameplay, glitches or actions like saving and reloading, which then become new types of narrative motifs. Fanfictions and fanarts thus construct – like the games they extend – hybrid fictions, mixing storytelling and gaming logic: in Amato’s words, “ludiegesis” (Amato, 2005 : 301). Using theoretical tools from narratology and from game studies, I will show that, by reincorporating playful aspects in their narrative structures, these derivative works hold a reflexive discourse on the original game that cannot be reduced to a binary opposition between “adhesion” and “subversion”, but which builds a whole new stratum of fiction. [less ▲]

Detailed reference viewed: 44 (0 ULiège)
Full Text
See detailLandscape and hydrological controls on the downstream transport of dissolved organic matter in the Congo and Zambezi rivers
Lambert, T; Bouillon, S; Teodoru, CR et al

Conference (2017, August 20)

Detailed reference viewed: 20 (2 ULiège)
See detailConstruction of high-resolution trace element time-series in Belgian speleothems by LA-ICP-MS
Allan, Mohammed ULiege; verheyden, sophie; crucifix, michel et al

Conference (2017, August 17)

Speleothems, presented in Belgium, are now regarded as valuable archive of paelenvirenmental variations on the continents, offering a number of advantages relative to other continental climate proxy ... [more ▼]

Speleothems, presented in Belgium, are now regarded as valuable archive of paelenvirenmental variations on the continents, offering a number of advantages relative to other continental climate proxy recorders such as lake sediments. They are reliable continental archives of high interest due to their dating possibilities and their possibility to preserve multi-proxy records of environmental and climatic dynamics. Establishing high-resolution trace element time series in speleothems requires analytical techniques capable of representative sampling at sub-annual spatial resolution (on order of 22 µm in this study). In the Belgian Pere Noel cave (PN), high spatial resolution measurements of trace elements (e.g., Mg, Sr, Ba) were realized by using LA-ICP-MS and compared with results from lower resolution techniques (ICP-MS). The results from both techniques have been analysed in order to assess the capability of each technique to reconstruct climate changes at high resolution from PN stalagmite. Results showed that LA-ICP-MS technique allows a rapid analysis of multiple elemental concentrations, and uses minimal sample volume allowing for replicate sampling and availability of almost the entire original sample for other analyses. [less ▲]

Detailed reference viewed: 59 (3 ULiège)
Full Text
Peer Reviewed
See detailIn vitro evaluation of the competing effect of Carnobacterium maltaromaticum isolated from vacuum packed meat against food pathogens
Maia Danielski, Gabriela ULiege; Didimo Imazaki, Pedro Henrique ULiege; Daube, Georges ULiege et al

Conference (2017, August 15)

Foodborne disease outbreaks are one of the leading causes of infections, hospitalizations and deaths provoked by pathogenic bacteria including Escherichia coli O157:H7, Listeria monocytogenes and ... [more ▼]

Foodborne disease outbreaks are one of the leading causes of infections, hospitalizations and deaths provoked by pathogenic bacteria including Escherichia coli O157:H7, Listeria monocytogenes and Salmonella spp. Carnobacterium maltaromaticum is a lactic acid bacteria, which could prevent the growth of pathogens in refrigerated food. The aim of this study was to determine the bioprotective potential of three strains of C. maltaromaticum isolated from chilled vacuum packed beef. They were tested in vitro against the pathogens described above. The results indicate that the selected strains have an antilisterial activity, which is optimized at low temperatures. Moreover, when the strains were combined with EDTA it was observed a slight, but significant, inhibition of the gram-negative bacteria used in this study. [less ▲]

Detailed reference viewed: 14 (2 ULiège)
Full Text
Peer Reviewed
See detailVisible-light TiO2 photocatalyst doped with silylated porphyrin
Mahy, Julien ULiege; Pàez Martinez, Carlos ULiege; Léonard, Géraldine ULiege et al

Conference (2017, August 15)

Detailed reference viewed: 33 (6 ULiège)
Full Text
See detailORBi : an institutional repository to promote Open Access
Chalono, Dominique ULiege; Thirion, Paul ULiege

Conference (2017, August 09)

Since 2008 the University of Liège as implemented an institutional repository - ORBi - based on a strong mandate. Every member of the ULiège must upload the bibliographic references of all of his/hers ... [more ▼]

Since 2008 the University of Liège as implemented an institutional repository - ORBi - based on a strong mandate. Every member of the ULiège must upload the bibliographic references of all of his/hers scientific publications and communications. The deposit of full text is also mandatory for scientific articles published since 2002. The internal evaluation at ULiège will only take into account publications deposited in ORBi. More than a repository, ORBi has become a tool to develop and inform on the concept of Open Science and Open access by allowing researchers to be part of the movement and to actively participate in the diffusion of their own production. By demanding authors to check by themselves the publisher’s policies and author’s copyright, ORBi has contributed to raise awareness on the unfair practices of big publishers. It has also demonstrated the need to rebalance a publication model that is no longer affordable by those who produce the main information. Additional tools developed by the ORBi team (statistics, request-a- print system, automated publications list) also help to give substance to the many benefices of open access (increase of citations, visibility, contacts and connections). [less ▲]

Detailed reference viewed: 448 (11 ULiège)
See detailHydrogen Loss from Mars: Seasonal and Sourced from Upper Atmospheric Water
Chaffin; Deighan; Stewart et al

Conference (2017, August 09)

Mars has lost a significant fraction of its initial water inventory to space over its history. This loss proceeds via a chemical chain initiated in the lower and middle atmosphere below 100 km altitude ... [more ▼]

Mars has lost a significant fraction of its initial water inventory to space over its history. This loss proceeds via a chemical chain initiated in the lower and middle atmosphere below 100 km altitude, which results in H escape to space in the collisionless corona above about 200 km altitude. Hydrogen loss from Mars is tracked via brigtness measurements of this corona in Lyman alpha light at 121.6 nm, which is scattered by neutral H orbiting and escaping the planet. Here we present observations of H escape variability made by the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission's Imaging Ultraviolet Spectrograph (IUVS) that demonstrate the seasonal dependence of H escape, adding to evidence initially gathered by Mars Express and the Hubble Space Telescope. We show that for two Mars years the atmosphere has exhibited enhanced H escape in Southern Summer near perihelion. We also present the result of photochemical model calculations which demonstrate that this variation can be explained as a result of high concentrations of water vapor in the upper atmosphere, consistent with Mars Express solar occultation measurements and several general circulation models. Our results demonstrate that the large variations in H escape at high altitudes can be driven by lower atmospheric dynamics, suggesting that Mars hydrogen escape may depend on climate, in addition to the long-term evolution of Martian climate depending on atmospheric escape. [less ▲]

Detailed reference viewed: 18 (0 ULiège)
See detailState of Martian Upper Atmosphere as Observed by Imaging Ultraviolet Spectroscope Onboard MAVEN
Jain; Stewart; Deighan et al

Conference (2017, August 09)

NASA’s MAVEN spacecraft has taken more than two earth years (one Martian year) of observations of Mars to understand the process of Martian atmospheric evolution. The Imaging Ultraviolet Spectrograph ... [more ▼]

NASA’s MAVEN spacecraft has taken more than two earth years (one Martian year) of observations of Mars to understand the process of Martian atmospheric evolution. The Imaging Ultraviolet Spectrograph (IUVS) on board MAVEN observes Mars in far and mid ultraviolet (110-340 nm) with unique scanning and pointing capabilities, which are optimized for airglow studies. Dayglow emissions observed on Mars are a perfect tracer for the processes occurring in the emitting region of the atmosphere (100-200 km) and provide basic information about atmospheric composition (and its structure), and give insight into the dynamics, energetics, and physics and chemistry of the thermosphere. With its wide spatial and temporal coverage, IUVS observations of Martian dayglow has contributed immensely to our understanding of the Martian upper atmosphere and its response to incoming solar flux (EUV/FUV) and coupling between lower and upper atmosphere through tides and waves. In this presentation, I will talk about an overview of scientific results obtained by IUVS dayglow measurements, including (1) spatial/temporal distribution of major MUV and FUV emissions and their seasonal variability; (2) the seasonal variation of thermosphere temperatures inferred from dayglow measurements; (3) the effect of solar EUV flux (including the ~27-day solar rotation) and heliocentric distance on upper atmosphere temperature structure. We will present an overview of these results and a discussion of their implications for the state of the Martian upper atmosphere. [less ▲]

Detailed reference viewed: 19 (0 ULiège)
See detailMAVEN/IUVS Observations of the Reflectance Spectrum of Phobos
Chaffin; Deighan; Schneider et al

Conference (2017, August 08)

The Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft occasionally has close encounter seasons with Phobos as a consequence of its orbital precession and its apoapsis being near the orbit of the ... [more ▼]

The Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft occasionally has close encounter seasons with Phobos as a consequence of its orbital precession and its apoapsis being near the orbit of the moon. During one encounter season in late 2015, MAVEN's Imaging Ultraviolet Spectrograph (IUVS) was able to gather the first ever spectral images of the moon in the mid-ultraviolet. During these flybys, IUVS was able to observe the trailing hemisphere of the moon, producing spectra useful for comparison with the Mariner 9 Ultraviolet Spectrometer measurements, which observed only the moon's leading side. The IUVS data reveal that the trailing side of the Moon is bluer than the leading side, indicating possible differences in the weathering history of the hemispheres. In addition, we see some evidence for an absorption feature longward of 300 nm, potentially produced by organic compounds, in accordance with Mariner 9 and SPICAM/UV observations. We will present an overview of our images and spectra and a discussion of their interpretation for the history and formation of Phobos. [less ▲]

Detailed reference viewed: 13 (0 ULiège)
See detailScience Highlights from MAVEN/IUVS After Two Years in Mars Orbit
Jain; Schneider; Stiepen, Arnaud ULiege et al

Conference (2017, August 08)

The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission's Imaging Ultraviolet Spectrograph (IUVS) observes Mars in the far and mid ultraviolet (110-340 nm), investigating lower and upper atmospheric ... [more ▼]

The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission's Imaging Ultraviolet Spectrograph (IUVS) observes Mars in the far and mid ultraviolet (110-340 nm), investigating lower and upper atmospheric structure and indirectly probing neutral atmospheric escape. The instrument is among the most powerful spectrographs sent to another planet, with several key capabilities: separate Far-UV & Mid-UV channels for stray light control; a high-resolution echelle mode to resolve deuterium and hydrogen emission; internal instrument pointing and scanning capabilities to allow complete mapping and nearly continuous operation; and optimization for airglow studies. After two Earth years in orbit (one Mars year), IUVS has assembled a large quantity of data and provided insights on present-day processes at Mars including dayglow, nightglow, aurora, meteor showers, clouds, and solar-planetary interactions. In this presentation, we will highlight several new discoveries made by IUVS. Among the key results obtained by IUVS are: (1) discovery of the widespread occurrence of a diffuse proton aurora representing a previously unknown source of energy deposition into the atmospheres of unmagnetized planets; (2) first spatial mapping of nitric oxide nightglow reveals regions of atmospheric downwelling necessitating substantial changes to global atmospheric circulation models; (3) a new high-spatial-resolution UV imaging mode allows detection of clouds from nadir to limb and their local time evolution, as well as unprecedented determinations of Mars’ low-altitude ozone; (4) discovery of a persistent meteoric metal layer in Martian atmosphere; (5) atmospheric structure, composition and dynamics from stellar occultation. We will present an overview of these results and a discussion of their implications for characterizing the state of the atmosphere and its evolution. [less ▲]

Detailed reference viewed: 48 (0 ULiège)
Full Text
Peer Reviewed
See detailEt si on se passait (complètement) des sciences humaines ?
Winand, Jean ULiege

Conference (2017, August 06)

Detailed reference viewed: 94 (3 ULiège)
Peer Reviewed
See detailHistories of Comics by its Makers. Contemporary Graphic Novels and the Heritage of Comics
Crucifix, Benoît ULiege

Conference (2017, August 03)

PhD project presentation

Detailed reference viewed: 52 (1 ULiège)
Full Text
See detailLos ingrávidos de Valeria Luiselli: entre fantástico y autoficción
Licata, Nicolas ULiege

Conference (2017, August 03)

En 2011, la escritora mexicana Valeria Luiselli publica su primera novela, Los ingrávidos, cuyo título alude al proceso de afantasmamiento de los dos narradores: una narradora notablemente similar a la ... [more ▼]

En 2011, la escritora mexicana Valeria Luiselli publica su primera novela, Los ingrávidos, cuyo título alude al proceso de afantasmamiento de los dos narradores: una narradora notablemente similar a la propia Luiselli y el poeta mexicano Gilberto Owen. Narración en primera persona y parecidos con el autor por un lado, fenómenos indiscutiblemente inverosímiles por otro, el libro reúne todos los ingredientes de lo que el teórico francés Vincent Colonna llamó “autoficción fantástica”. Sin embargo, en una de sus entrevistas, Luiselli declara que “no quería escribir una novela fantástica”, y, más aún, “que [se] moriría si alguien dice que Los ingrávidos es una novela de ese estilo, estaría profundamente indignada” (Barbosa Vera, Scofaulos 2012). Aunque el efecto fantástico no siempre dependa de la intención de un autor, en este caso preciso Valeria Luiselli parece tener razón. De hecho, un examen detenido de la obra revela una antinomia: sin ser fantástica, Los ingrávidos es una autoficción “de ese estilo”. Es sobre esa antinomia que esta comunicación inclina la perspectiva. Después de un sucinto resumen, nos centremos en primer lugar en los indicios autoficcionales de la novela y luego en sus componentes fantásticos, examinando con más detenimiento los que impiden que el libro se adhiera a esa modalidad, a saber, los moduladores de duda, los comentarios metadiegéticos y la no fiabilidad de la narradora. [less ▲]

Detailed reference viewed: 42 (2 ULiège)
Full Text
See detailImpact of dependency on the distribution of p-value
Ernst, Marie ULiege; Swan, Yvik ULiege

Conference (2017, August 01)

We study the impact of dependence assumptions on the distribution of p-values and quantiles for repeated testing on dependent data. This leads us to considering the general problem of the quality of a ... [more ▼]

We study the impact of dependence assumptions on the distribution of p-values and quantiles for repeated testing on dependent data. This leads us to considering the general problem of the quality of a binomial approximation to the distribution of a sum of dependent indicator variables. Whenever possible we use classical and adhoc versions of Stein’s method to provide tight bounds on classical probability distances. In many cases, however, the relevant expressions are intractable and we resort to empirical analysis by extensive simulations. We apply our findings to a realistic real-life scenario. [less ▲]

Detailed reference viewed: 50 (5 ULiège)
Full Text
Peer Reviewed
See detailUniversally dispreferred structures through change. The diachrony of affix ordering in Egyptian-Coptic
Grossman, Eitan; Polis, Stéphane ULiege

Conference (2017, August 01)

It has been repeatedly observed, on the basis of typological ‘big data,’ that there is a worldwide preference for suffixes as opposed to prefixes. This can be explained in several ways. A possible ... [more ▼]

It has been repeatedly observed, on the basis of typological ‘big data,’ that there is a worldwide preference for suffixes as opposed to prefixes. This can be explained in several ways. A possible explanation is that this feature is a world-wide retention from Proto-World, or is prone to diffusion through language contact. Another possible explanation is that suffixes are preferred for some reason in Universal Grammar or for hitherto unclear general cognitive reasons (Caballero et al. 2008). Yet another explanation is that suffixes are more prone to be created through regular processes of language change, e.g., grammaticalization (Bybee 1985), perhaps due to online usage factors (Himmelmann 2014). The explanation of this preference is directly relevant to a question highlighted in Good (2008), namely, the relationship between language universals and language change: do synchronic structural universals constrain change, or do diachronic universals, ultimately motivated by synchronic usage factors, give rise to synchronic universals? Kiparsky (2008) argues that the form of synchronic grammars constrains change, i.e., languages should not be able to change in such a way that they flout Universal Grammar. On the other hand, for Bybee (2008), the most robust universals are in fact universals of language change, and synchronic states are in a sense epiphenoma. For this question, apparently ‘counter-directional’ changes are crucial: why should language change lead to universally dispreferred distributions of linguistic structures? n this paper, we argue that universally dispreferred structures can and do arise as the result of regular language change, given the right background structures as the particular ‘ecology’ in which change takes place. Specifically, we show that Ancient Egyptian-Coptic (Afroasiatic), shows a long-term diachronic macro-change from mixed suffixing-prefixing to an overwhelming preference for prefixing. The empirical basis for this study is a comparison of ten typologically-significant parameters in which prefixing or affixing is at stake, based on Dryer’s (2013) 969-language sample. With its extremely high prefixing preference, Coptic belongs to the rare 6% or so of languages that are predominantly prefixing (Tables 1,2). Moreover, it has a higher prefixing index (11) than any other language in Dryer’s 969-language sample. The closest competitor is Hunde (Bantu; Democratic Republic of Congo), with a prefixing index of 9.5. In terms of areality, Coptic is an outlier: in mediterranean northern Africa, Coptic is the only language that is predominantly prefixing. We argue that each of the micro-changes implicated in this macro-change are better understood in terms of changes at the level of individual constructions, via grammaticalization, rather than in terms of a broad structural ‘drift.’ Crucially, there is nothing unusual about the actual processes of change themselves; what may be unusual, from a cross-linguistic point of view, is the length of uninterrupted documentation of a single language, which allows us to observe long-term changes with abundant evidence. In short, we argue that Ancient Egyptian-Coptic looks as though it is swimming against the typological tide, although it is constantly paddling along with the usual tides of language change. [less ▲]

Detailed reference viewed: 39 (3 ULiège)
Full Text
See detailRegularized Discriminant Analysis in Presence of Cellwise Contamination
Aerts, Stéphanie ULiege; Wilms, Ines

Conference (2017, August 01)

Quadratic and Linear Discriminant Analysis (QDA/LDA) are the most often applied classification rules under normality. In QDA, a separate covariance matrix is estimated for each group. If there are more ... [more ▼]

Quadratic and Linear Discriminant Analysis (QDA/LDA) are the most often applied classification rules under normality. In QDA, a separate covariance matrix is estimated for each group. If there are more variables than observations in the groups, the usual estimates are singular and cannot be used anymore. Assuming homoscedasticity, as in LDA, reduces the number of parameters to estimate. This rather strong assumption is however rarely verified in practice. Regularized discriminant techniques that are computable in high-dimension and cover the path between the two extremes QDA and LDA have been proposed in the literature. However, these procedures rely on sample covariance matrices. As such, they become inappropriate in presence of cellwise outliers, a type of outliers that is very likely to occur in high-dimensional datasets. We propose cellwise robust counterparts of these regularized discriminant techniques by inserting cellwise robust covariance matrices. Our methodology results in a family of discriminant methods that are robust against outlying cells, cover the gap between LDA and QDA and are computable in high-dimension. [less ▲]

Detailed reference viewed: 15 (1 ULiège)
Peer Reviewed
See detailVoice use among music theory teachers
Schiller, Isabel ULiege; Morsomme, Dominique ULiege; Sfez, Lou et al

Conference (2017, August)

In Belgium, there is a particular group of music teachers referred to as music theory teachers. Working at music schools, they convey theoretical knowledge and practical musical skills to groups of ... [more ▼]

In Belgium, there is a particular group of music teachers referred to as music theory teachers. Working at music schools, they convey theoretical knowledge and practical musical skills to groups of individuals who learn music during their free-time. Even though music theory teachers use both speaking and singing voice intensively at work, little is known about their voice use profiles. This study investigated the vocal loading among French-speaking music theory teachers. Objectives were (1) to describe their professional and extra-professional vocal loading, (2) to determine the relationship between vocal loading and background noise level and (3) to investigate whether objectively measured vocal loading is reflected in music theory teachers’ auto-evaluation of their voice. Using voice dosimetry, 13 music theory teachers were monitored for one workweek. Parameters analysed were F0, voice sound pressure level (SPL), phonation time, vocal loading index (VLI) and background noise SPL. At the end of each monitoring day, subjects self-assessed their voice use by means of visual analogue scales. Results revealed (1) significantly higher vocal loading in the professional context than in the extra-professional context, (2) significant positive correlations between background noise level and the parameters F0, voice SPL and phonation time and (3) significant correlations between the VLI and auto-evaluation data (e.g. voice quality and vocal fatigue). These results highlight that teaching music theory is a profession with high vocal demands. At work, music theory teachers are exposed to high background noise, which seems to influence their voice use and may potentially contribute to the development of voice problems among this population. Visual analogue scales provide a promising tool to subjectively investigate vocal loading among music theory teachers. [less ▲]

Detailed reference viewed: 27 (4 ULiège)
Full Text
Peer Reviewed
See detailLEARNING CHEMICAL KINETICS AT SECONDARY SCHOOL LEVEL: MISCONCEPTIONS AND ALTERNATIVE APPROACH
Karous, Hamad ULiege; Nihant, Brigitte ULiege; Leyh, Bernard ULiege

Conference (2017, August)

Chemical kinetics occupies a central position in describing and understanding the dynamic behaviour of matter. It is then expected that this topic shares a significant part in the teaching curricula ... [more ▼]

Chemical kinetics occupies a central position in describing and understanding the dynamic behaviour of matter. It is then expected that this topic shares a significant part in the teaching curricula. Nevertheless, the review of the scarce literature on the topic reveals that little is usually invested to adequately include this field in the major programs. Most studies demonstrate that the teaching approaches in chemical kinetics often remain limited to the qualitative macroscopic description and do not identify the necessary relevant links between the macroscopic and the submicroscopic scales. Consequently, low levels of conceptual understanding and many misconceptions can be identified at the students’ level. Based on the constructivist approach in which the learners build their own cognitive structure, a new teaching sequence including qualitative and quantitative aspects of chemical kinetics for secondary school students (15-17 years old) is proposed. This teaching sequence allows the students to develop an ability to use corpuscular models as explanatory tools as well as an adequate conceptual understanding of chemical kinetics. This approach integrates visualization tools along with active learning strategies using, e.g., interactive websites. [less ▲]

Detailed reference viewed: 40 (0 ULiège)
Full Text
See detailPhysical modeling of overtopping induced fluvial dike failure: effects of the channel flow and floodplain innundation
Rifai, Ismail; Erpicum, Sébastien ULiege; Archambeau, Pierre ULiege et al

Conference (2017, August)

Fluvial dikes have been constructed as flood defense structures, but their failure may lead to casualties and major damages in the protected areas. Flow overtopping is listed as the main cause of dike ... [more ▼]

Fluvial dikes have been constructed as flood defense structures, but their failure may lead to casualties and major damages in the protected areas. Flow overtopping is listed as the main cause of dike failure. An accurate assessment of the breach evolution is a prerequisite to a sound flood risk assessment and management. in contrast, the current knowledge of the physical processes involved in fluvial dike failure by overtopping remains highly fragmented. This paper presents experimental tests on the breaching of homogenous sand-dikes in a fluvial configuration, i.e. the flow is parallel to the longitudinal dike axis. Overtopping is initiated over a pilot notch at the dike crest. Experiments are performed for different inflow discharges in the main channel and under different levels of floodplain confinement. The transient evolution of the dike geometry is monitored using a laser profilometry technique. The detailed reconstruction of the breach formation and expansion provides key insights into the mechanisms involved in the failure of fluvial dikes. Results show that the breach development differs highly from experiments disregarding the flow parallel to the dike axis (i.e. frontal configuration) as in the fluvial configuration the breach develops mainly in the flow direction and the floodplain water level strongly conditions the breach horizontal and vertical extent. [less ▲]

Detailed reference viewed: 20 (1 ULiège)
Full Text
Peer Reviewed
See detailDynamicized semantic maps of content words. Comparing long-term lexical changes in Ancient Egyptian and Greek
Georgakopoulos, Athanasios ULiege; Polis, Stéphane ULiege

Conference (2017, July 31)

This paper aims at demonstrating how information on the paths of semantic extensions undergone by content words may be incorporated into semantic maps. For this purpose, particular changes that affected ... [more ▼]

This paper aims at demonstrating how information on the paths of semantic extensions undergone by content words may be incorporated into semantic maps. For this purpose, particular changes that affected the meanings of words in the course of the Ancient Egyptian and of the Ancient Greek language history are investigated. [less ▲]

Detailed reference viewed: 62 (4 ULiège)
Full Text
Peer Reviewed
See detailLegal, official, academic and "trading" norms in higher DRC's education
Poncelet, Marc ULiege

Conference (2017, July 31)

Rule of legal, official, practical norms in DRC university

Detailed reference viewed: 17 (0 ULiège)
Full Text
See detailHigh School Sport in Belgium (Wallonia)
Cloes, Marc ULiege

Conference (2017, July 31)

In Belgium, since 1969, sport is a competence under the control of public authorities defined according to the linguistic regime. As in most Western European countries, sport has been compartmentalised by ... [more ▼]

In Belgium, since 1969, sport is a competence under the control of public authorities defined according to the linguistic regime. As in most Western European countries, sport has been compartmentalised by giving rise to three main types of practice: "professional", "traditional" and "alternative" sports (Diegel, 1995). Clubs linked to sports federations constitute the local setting up of the sports organization, which is largely a majority (Zintz, 2014). Other operators from the public domain and the private sphere coexist (Cloes, 2012). In the school environment, sport can be found in three contexts: within the compulsory curriculum (physical education), integrated to extracurricular activities (activities organized during recess or free periods), and peripheral activities (use of school sports facilities by organizers who are not belonging to the school actors). If inter-school competitions are organized by several school sports federations (depending to the educational network), they are far from reaching the interest and involvement reached by the competitions managed by the traditional sports federations. So there is hardly any systematic sports training in French-speaking Belgian schools. Some PE teachers propose voluntary training sessions but there are less and less connections between their actions and sport clubs. On the other hand, young sportsmen appointed by the Minister of Sports have a special status enabling them to benefit facilities to pursue their double career. They are sometimes gathered in special organizations - sport-studies or development centers - which have been the subject of several studies (Cloes et al., 2002, Lacrosse et al., 2014, Theunissen et al., 2016) but PE teachers are very few involved in these development opportunities. In many situations of partnership between the school and sports structures, their role is often limited to a simple accompanying action (sports days, projects "My club-My school." Cloes (2017) insisted however on the need to make them a priority in the coordination of the preparation of physically educated citizens. References Cloes, M. (2012). La Wallonie en mouvement : vers une culture sportive et de l’activité physique ? In, M. Germain et R. Robaye (Eds.), L'état de la Wallonie. Portrait d'un pays et de ses habitants – 2011. (pp. 70-80). Namur : Les éditions namuroises. Available on Internet : http://hdl.handle.net/2268/117294 Cloes, M. (2017). Preparing physically educated citizens in physical education. Expectations and practices. Retos, 31, 245-251. Available on Internet : http://recyt.fecyt.es/index.php/retos/article/view/53497/32304 Cloes, M., Schelings, V., Ledent, M, & Piéron, M. (2002). Sport-études : comparaison des caractéristiques motivationnelles et des relations sociales des élèves sportifs et de leurs condisciples. eJRIEPS (e Journal de la Recherche sur l'Intervention en Éducation Physique et Sport), 1, 57-72. Available on Internet: http://hdl.handle.net/2268/10187 Diegel, H. (1995). Sport in changing society – Sociological essays. Schorndorf: Verlag Karl Haufmann. Lacrosse, Z., Martin, V., & Cloes, M. (2014, July). Analyse qualitative du fonctionnement du centre de formation d’une fédération sportive. Paper presented at the 8ème biennale de l’ARIS ‘Temps, temporalités et intervention en EPS et en sport’, Genève, Suisse. Available on Internet: http://hdl.handle.net/2268/170020 Theunissen, C., Meys, G., & Cloes, M. (2016). Encadrement du staff autour du double projet des sportifs dans un centre de formation en handball. Revue de l’Éducation physique, 56, 1/2, 20. Disponible sur Internet: http://yessport.be/educationphysique/file/REVUE_1_ET_2_2016_-2eme_COLLOQUE_GUY_NAMUROIS.pdf ou http://orbi.ulg.ac.be/handle/2268/199016 Zintz, T. (2014). Module 3 - Le paysage sportif : du pratiquant aux fédérations. Thématique 1 - Cadre institutionnel et législatif. Cours généraux de la formation ‘Moniteur Sportif Initiateur’. Brussels, Belgium : Administration des sports, Fédération Wallonie-Bruxelles. Internet : http://www.sport.cfwb.be/index.php?id=7370 [less ▲]

Detailed reference viewed: 41 (3 ULiège)
See detailEl impacto del fin del “giro al la izquierda” sobre las relaciones entre China y América Latina
Wintgens, Sophie ULiege

Conference (2017, July 28)

La llegada de China en América Latina a finales de los años 2000 se ha presentado como una nueva opción en el contexto histórico de un “movimiento pendular” que siempre ha visto los países latino ... [more ▼]

La llegada de China en América Latina a finales de los años 2000 se ha presentado como una nueva opción en el contexto histórico de un “movimiento pendular” que siempre ha visto los países latino-americanos girar principalmente en torno a Europa y sus antiguas potencias coloniales o en torno a los Estados Unidos. En el marco de esa dinámica del “triángulo Atlántico” en la que se encuentra encerrada América Latina, China ha también beneficiado de un entorno regional propicio como consecuencia de factores tanto estructurales (las debilidades del regionalismo latinoamericano), como coyunturales (la escalada de la “nueva” izquierda sudamericana). El inicio de la década de 2010, sin embargo, parece marcar el final del “giro à la izquierda” y los límites del modelo de desarrollo extractivo adoptado por la mayoría de los gobiernos progresistas latino-americanos. Al mismo tiempo, las autoridades chinas han también iniciado un cambio de modelo de desarrollo económico con el undécimo Plan Quinquenal (2006-2010) para que sea más autocentrado y basado en la producción de productos de alta calidad. Basándose en estas observaciones, este ponencia interroga el impacto de este contexto sobre las relaciones entre China y América Latina. [less ▲]

Detailed reference viewed: 43 (1 ULiège)
Full Text
See detailÉcrire de “Guiron” en Flandre à la fin du Moyen Âge
Veneziale, Marco ULiege

Conference (2017, July 28)

Detailed reference viewed: 16 (0 ULiège)
Full Text
Peer Reviewed
See detailHARMONIC BALANCE COMPUTATION OF THE NONLINEAR FREQUENCY RESPONSE OF A THIN PLATE
Lee, Jongsuh ULiege; Kerschen, Gaëtan ULiege; Detroux, Thibaut ULiege

Conference (2017, July 24)

The harmonic balance method (HBM) is used to investigate the dynamical behavior of the geometrical nonlinear plate. The middle plane displacements are included in the plate in which the equations of ... [more ▼]

The harmonic balance method (HBM) is used to investigate the dynamical behavior of the geometrical nonlinear plate. The middle plane displacements are included in the plate in which the equations of motion are developed by the principle virtual work. Moreover, the nonlinear frequency response curves, or NFRCs, are obtained by a continuation method. [less ▲]

Detailed reference viewed: 44 (4 ULiège)
Peer Reviewed
See detailComprehensive Ion Mobility Calibration Strategies based on Synthetic Polymers
Haler, Jean ULiege; Kune, Christopher ULiege; Chirot, Fabien et al

Conference (2017, July 24)

Detailed reference viewed: 41 (6 ULiège)
See detailIntraspecific variation of Zn hyperaccumulation in Arabidopsis halleri populations
Schvartzman Echenique, Maria Sol ULiege; Corso, Massimiliano; Fataftah, Nazeer ULiege et al

Conference (2017, July 19)

Detailed reference viewed: 28 (2 ULiège)
Full Text
Peer Reviewed
See detailmstR: An R package to generate multistage testing designs
Magis, David ULiege; Yan, Duanli; von Davier, Alina

Conference (2017, July 18)

Multistage testing (MST; Yan, von Davier & Lewis, 2014) has become an important framework of tailored testing. Similarly to computerized adaptive testing (CAT) it proposes an optimal routing of the ... [more ▼]

Multistage testing (MST; Yan, von Davier & Lewis, 2014) has become an important framework of tailored testing. Similarly to computerized adaptive testing (CAT) it proposes an optimal routing of the administered items according to the previous test taker’s responses. However, items are not selected and administered as single units but as modules (subsets). The main goal of MST consists in selecting the optimal path of modules across the successive stages of the test. Unfortunately, if various operational testing programs are nowadays considering MST for practical administrations, there is still very limited access to accurate software that can either treat or generate MST scenarios for research purposes. In this talk we succinctly present a new package from the R software, called mstR (Magis, Yan & von Davier, 2017). Built in the same spirit of the package catR for CAT designs, it permits to generate repeated response patterns under a predefined MST scenario by providing the set of modules and related item parameters, the number of stages and the connections between modules from successive stages. Several rules for optimal module selection and ability estimation (under IRT framework or based on test scores) are also available. This talk will mostly focus on the (non-technical) description of package mstR and its main features. An example will also be described as an illustration of this framework. [less ▲]

Detailed reference viewed: 75 (2 ULiège)
Peer Reviewed
See detailFluencyBank: studying typical and disordered speech fluency across languages and contexts
MacWhinney, Brian; Leclercq, Anne-Lise ULiege; Zwitserlood, Rob et al

Conference (2017, July 18)

Mastering the skill to produce fluent speech is a complex task that is still poorly understood. Similarly, the threshold at which typical fluency breakdown begins to attract clinical concern is also a ... [more ▼]

Mastering the skill to produce fluent speech is a complex task that is still poorly understood. Similarly, the threshold at which typical fluency breakdown begins to attract clinical concern is also a matter of frequent disagreement. The goal of the recently funded FluencyBank project, an arm of TalkBank, is to facilitate collection and analysis of expressive speech samples across the lifespan, languages, and clinical diagnoses. Speakers will illustrate the challenges and opportunities available to the study of expressive language development skill. The first speaker (Leclercq) will examine the need for reference data across languages in order to distinguish typical developmental disfluency from stuttering, using data from French. The second speaker (Zwitserlood) will confirm and elaborate on the profile of elevated disfluency profiles in children with SLI, using Dutch data. The third speaker (Byrd) will describe the theoretical and practical challenges of discriminating typical fluency profiles from clinical stuttering in bilinguals, with emphasis on Spanish-English child speakers. The fourth speaker (Ratner) will update information linking language proficiency to stuttering onset and persistence/recovery, showing the complex interactions between speech and language formulation. Each speaker will emphasize the many intertwining skills that underlie the development of spoken language fluency and the benefits of specialized cooperative initiatives such as FluencyBank to collect data for exploration of otherwise impossible to answer hypotheses. Moderator Brian MacWhinney, Co-Investigator of FluencyBank will discuss its development, planned research projects and computational tool development, and illustrate potential applications for use by child language researchers. [less ▲]

Detailed reference viewed: 93 (2 ULiège)
Peer Reviewed
See detailProtein-polysaccharide complexes for improved protein delivery within CaCO3 microparticles
Ramalapa, Bathabile ULiege; Crasson, Oscar ULiege; Vandevenne, Marylène ULiege et al

Conference (2017, July 17)

Introduction: The controlled delivery of proteins within calcium carbonate (CaCO3) particles is currently widely investigated due to accessibility, low cost, safety, pH-sensitive properties, high surface ... [more ▼]

Introduction: The controlled delivery of proteins within calcium carbonate (CaCO3) particles is currently widely investigated due to accessibility, low cost, safety, pH-sensitive properties, high surface area and high porosity. The success of these carriers has been driven by the ionic interactions between proteins and particles making the encapsulation of proteins highly dependent on the pH of reaction solutions and the isoelectric point of the protein. This poses a great limitation on the successful loading of proteins into microparticles. In this study we explored the use of polysaccharide-protein complexes to enhance the encapsulation of otherwise poorly encapsulated proteins in CaCO3 microparticles. Methods: A chitin binding domain (ChBD) was inserted on the protein β-lactamase to form a chimeric protein. A protein-polysaccharide complex was formed between the protein and hyaluronic acid (HA) owing to the intrinsic affinity of the ChBD to HA. The chimeric protein was then loaded into CaCO3 microparticles using super critical CO2 technology aided by the templating effect of HA on CaCO3. The microparticles were characterised for size, surface charge, polymorphism and protein loading. Bioactivity and stability of the encapsulated β-lactamase was characterised by kinetic reaction with nitrocefin. A thrombin cleavage site was inserted onto the gene sequence of the protein to achieve release of the protein from the microparticles by proteases mediation using thrombin. Results: Vaterite CaCO3 microparticles of sizes ranging between 6 and 8 µm were produced. The presence of the ChBD on the β-lactamase increased the encapsulation of the protein by 6 fold when complexed with HA. Thrombin mediated release increased the release of the protein from the microparticles within 36 hours from <25% to 87%. The protein-polysaccharide complex demonstrated success in encapsulation of the protein while retaining up to 81% activity of the protein and allowing controlled release by proteases. Conclusion: Protein-polysaccharide complexation demonstrates an excellent approach for the delivery of sensitive biomacromolecules which can otherwise be complicated due to electrostatic hindrances. Future prospects include using the methods we have developed for encapsulation of therapeutic proteins and using calcium carbonate as a carrier and scaffold for example in bone regeneration. [less ▲]

Detailed reference viewed: 23 (2 ULiège)
Full Text
See detailRegression analysis of potato dormancy integrating genetic and environmental factors.
Visse-Mansiaux, Margot ULiege; Vanderschuren, Hervé ULiege; Soyeurt, Hélène ULiege et al

Conference (2017, July 14)

Potato dormancy is usually described as the period required by potato tubers to initiate sprouting after harvest. The dormancy parameter is key for the potato value chain because it defines the storage ... [more ▼]

Potato dormancy is usually described as the period required by potato tubers to initiate sprouting after harvest. The dormancy parameter is key for the potato value chain because it defines the storage period during which no anti-sprouting treatment is required. Dormancy is known to have a genetic component because the time from harvest to sprouting varies between potato varieties. A better characterization of dormancy helps optimizing storage by reducing the frequency of anti-sprouting applications. Reducing the anti-sprouting treatments not only helps lowering storage costs but it also provides an immediate benefit for human health and for the environment. The main objective of the present study is to develop a model predicting the dormancy length in function of the cultivar and the growing conditions of the considered year. So, 2 sources of informations were used: 1) average dormancy of cultivars provided by breeders (breeders dormancy) 2) average dormancy of cultivars obtained from field experiments (field dormancy). The field experiments were managed in Switzerland during 25 years in four different locations and for 721 varieties of potatoes. Field data were registered during the growing season such as weather data (e.g. temperature, rainfall etc.), soil data and crop management data. One month after harvest, the potatoes were stored at 8°C in wooden crates containing 7 kg of potato tubers. The dormancy was defined as the time between the harvest and the emergence of the first sprouts. The data (n=3’730) were analyzed as follow: (1) calculation of the field dormancy, which is the average dormancy length of the tested cultivars from the field data; (2) merging of field dormancy and breeders dormancy records (3) univariate regressions to study the link between the breeders and field dormancy records; (3) ANOVA to identify the parameters with the highest influence on the dormancy length; (4) creation of a model using these identified parameters in order to predict the sprouting date of potato stocks based on the field data; (5) validation of the model. Our results highlight the heterogeneity of the dormancy data provided by the potato breeders. Our results also stress the importance of climatic and field parameters to estimate the dormancy length of a given potato stock. We discuss the practical consequences for growers and potato storage companies. [less ▲]

Detailed reference viewed: 24 (6 ULiège)
Full Text
See detailLife cycle in practice - How to help SMEs to integrate life cycle thinking concept?
Groslambert, Sylvie ULiege

Conference (2017, July 13)

Context The application of Life Cycle Approaches – including Life Cycle Assessment, eco-design and environmental labelling – is becoming an increasing reality for business, and a growing challenge in many ... [more ▼]

Context The application of Life Cycle Approaches – including Life Cycle Assessment, eco-design and environmental labelling – is becoming an increasing reality for business, and a growing challenge in many economic sectors. Businesses are facing increasing legal and market requirements to enhance resource efficiency and reduce the environmental impact of their products & services. To significantly address this challenge, the Life Cycle in Practice project (LCiP - LIFE12 ENV/FR/001113) was conceived, aiming to promote the uptake of LC approaches particularly in SMEs. This project is co-financed by the LIFE Program + Policy and Governance on the theme of the environment of the European Un-ion, supporting technological projects with significant environmental impacts. Project The overall aim of the LCiP project is to help SMEs in France, Belgium, Portugal and Spain in reducing the environmental impacts of their products and services across the entire Life Cycle and to foster the implementation of circular economy in these regions. Three sectors are selected: Buildings & Construction, Waste Management and Energy Equipment. Thirty-two businesses are involved in the four regions, twelve being located in Wallonia. The Competition Clusters GreenWin is the Walloon partner, and it has man-dated several teams well known for their expertise in LCA to coach them Results ULg-PEPs coached three SMS's to help them to carry out the Life Cycle Assessment (LCA) of their product and accordingly to identify the strengths and weakness of the products and/or processes. Two of them are involved in building insulation (hemp con-crete blocs from IsoHemp and sound insulation panels Acoustix made by Pan-Terre), and the third one is developing an accelerated composting equipment for food waste (Eco-Cleaner). Concretely, the LCA of the three products are realised in a cradle to gate perspective. The results show possible environmental impact improvement for all the products, even if they are eco-designed. As a coach, the experience of working closely with highly motivated people in small structures is very gratifying and a smart way to help life cycle approaches to develop in our region. We are pleased to go on this initiative by hosting one of the Physical Resource Cen-tres in the University of Liège to welcome SMEs seeking to integrate LC approaches into their businesses, and give them access to selected LCA tools, reading material, expertise, training and advice. Results and Online Resource Center are centralised on the LCiP website: http://www.lifelcip.eu/ [less ▲]

Detailed reference viewed: 26 (2 ULiège)
Peer Reviewed
See detailDu dessin au design. Seth comme auteur-rééditeur
Crucifix, Benoît ULiege

Conference (2017, July 13)

Depuis ces dernières années, l’édition de bande dessinée connaît un véritable boom de rééditions patrimoniales. Dans le contexte nord-américain, ce sont justement les auteurs associés au « roman ... [more ▼]

Depuis ces dernières années, l’édition de bande dessinée connaît un véritable boom de rééditions patrimoniales. Dans le contexte nord-américain, ce sont justement les auteurs associés au « roman graphique » – ceux-là même qui ont exploré le livre en tant qu’objet en réalisant eux-mêmes le design de leurs œuvres – qui sont aussi invités à prendre en charge la conception graphique de ces rééditions d’œuvres du passé qu’ils aident à faire (re)découvrir. Cette communication a pour but d’étudier les designs réalisés par l’auteur canadien Seth pour plusieurs œuvres complètes : The Complete Peanuts, The John Stanley Library et The Collected Doug Wright. Les designs de Seth se caractérisent par leur mise-en-avant d’une esthétique idiosyncratique, comme il l’a lui-même exprimé : « when I design something it really is too much about me » (Spurgeon, 143). Elles se lient donc intimement à la production « propre » de l’auteur. Dans le cas de Stanley et Doug Wright, ces rééditions sont d’ailleurs liées à des essais écrits par Seth, relevant d’un travail autant esthétique qu’historiographique. Il s’agira d’abord de comprendre la spécificité culturelle de cette pratique de réédition dans l’édition « alternative » américaine, qui diffère du contexte éditorial européen ; plus en avant, le cas de Seth permettra de comprendre comment cette pratique ressort d’un mécanisme de canonisation particulier (Heer), mais aussi de montrer à quel point ce type d’objets met en avant une « fonction-auteur » (Foucault) inextricablement liée à une activité historiographique, éditoriale et patrimoniale. [less ▲]

Detailed reference viewed: 60 (1 ULiège)
Full Text
Peer Reviewed
See detailHighly efficient doped nanocristalline TiO2 for water Treatment
Mahy, Julien ULiege; Léonard, Géraldine ULiege; Zubiaur, Anthony ULiege et al

Conference (2017, July 13)

Detailed reference viewed: 35 (8 ULiège)