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See detailIs Büchi's theorem useful for you? (for an audience of logicians)
Rigo, Michel ULg

Conference (2017, January 17)

Almost a century ago, Presburger showed that the first order theory of the natural numbers with addition is decidable. Following the work of B\"uchi in 1960, this result still holds when adding a function ... [more ▼]

Almost a century ago, Presburger showed that the first order theory of the natural numbers with addition is decidable. Following the work of B\"uchi in 1960, this result still holds when adding a function $V_k$ to the structure, where $V_k(n)$ is the largest power of $k\ge 2$ diving $n$. In particular, this leads to a logical characterization of the $k$-automatic sequences. During the last few years, many applications of this result have been considered in combinatorics on words, mostly by J. Shallit and his coauthors. In this talk, we will present this theorem of B\"uchi where decidability relies on finite automata. Then we will review some results about automatic sequences or morphic words that can be proved automatically (i.e., the proof is carried on by an algorithm). Finally, we will sketch the limitation of this technique. With a single line formula, one can prove automatically that the Thue-Morse word has no overlap but, hopefully, not all the combinatorial properties of morphic words can be derived in this way. We will not assume any background in combinatorics on words from the audience. [less ▲]

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See detailNO Nightglow studies status
Stiepen, Arnaud ULg; Jain; Deighan et al

Conference (2017, January 16)

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See detailBreaking Bad News: the TAKE five program
VAN CAUWENBERGE, Isabelle ULg; GILLET, Aline ULg; Bragard, Isabelle ULg et al

Conference (2017, January 14)

Introduction For years, bad news delivery’s impact on patients or their relatives, as well as physicians’ stress has been a major concern. Based on studies claiming the efficacy of training courses to ... [more ▼]

Introduction For years, bad news delivery’s impact on patients or their relatives, as well as physicians’ stress has been a major concern. Based on studies claiming the efficacy of training courses to help physicians delivering such news, many protocols, like SPIKES, BREAKS or SHARE, have emerged worldwide. However, training to such protocol might be time-consuming and not suitable with junior doctors or trainees’ turnover. We hypothesised that a standardized 5-hours training program could improve bad news delivery practice. Participants and methods This preliminary study was conducted in the ED of a tertiary care academic hospital accounting for 90000 ED census per year, 16 attending physicians, 10 junior residents, and 5 trainees per month. Data were collected between November 2015 and April 2016. The study included 3 phases over 4 weeks. Video recorded single role-playing sessions happened the 1st (T1) and the 4th (T3) weeks. A 3-hour theory lesson happened the second week (T2), introducing the basics of therapeutic communication and delivering bad news. Each role-playing session lasted almost 1 hour (10 minutes briefing and medical case reading, 10 minutes role-plays and 40 minutes group debriefing). Bad news delivery performance was evaluated by a 14-points retrospective assessment tool (1). We collected data about the status and impact of a stressful event at 3-days using the French version of the IES-R scale (2). We applied Student t-tests for statistical analysis. Results 14 volunteers (10 trainees and 4 junior emergency physicians) were included in the study. On average, bad-news delivery process took 9’45’’ at T1 and 10’20’’ at T3. From T1 to T3, bad-news delivery performance increased significantly for both junior emergency physicians and trainees (p=0.0003 and p=0.0006, respectively). Further analysis revealed that most relevant increases involved the “situation” (p<0.001), “presentation” (p=0.009), “knowledge” (p=0.037), “emotions” (p=0.01) and “summary” (p=0.001) steps. We also found a significant decrease of the impact of bad-news delivery on trainee physicians’ stress (p=0.006). Discussion and conclusion These preliminary results indicate some potential for this new standardized course of bad news delivery. Apart from allowing physicians increase their communications skills, we believe that this simple 5-hour simulation-training program could alleviate physicians’ stress when they happen to break bad news. References 1. Brunet, A. et al. (2003). Validation of a French version of the Impact of Event Scale-Revised. Can J Psychiatry, 48(1), 56-61. 2. Park, I. et al. (2010). Breaking bad news education for emergency medicine residents: A novel training module using simulation with the SPIKES protocol. J Emerg Trauma Shock, 3(4), 385-388. [less ▲]

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See detailThe added value of plasma or urinary NGAL concentrations in clinical practice
Gregoire, Emilien ULg; Claisse, Guillaume; GUIOT, Julien ULg et al

Poster (2017, January 13)

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See detailTracking the Subtle Mutations Thriving Host Sensing by the Plant Pathogen Streptomyces scabies
Deflandre, Benoit ULg; Jourdan, Samuel ULg; Francis, Isolde Maria et al

Poster (2017, January 12)

Le modèle de la pathogénicité végétale chez les Streptomyces, S. scabies est responsable de la maladie de la galle commune. La thaxtomine est la phytotoxine qui cause cette maladie. Il y a peu, la voie de ... [more ▼]

Le modèle de la pathogénicité végétale chez les Streptomyces, S. scabies est responsable de la maladie de la galle commune. La thaxtomine est la phytotoxine qui cause cette maladie. Il y a peu, la voie de production de la toxine a été découverte : celle-ci met en oeuvre un double mécanisme de régulation génétique. Cependant, certains aspects de la perception de son hôte par le pathogène sont toujours inconnus. Dans ce poster, nous proposons plusieurs hypothèses pour expliquer comment quelques éléments subtiles peuvent être à l'origine de ce mécanisme de pathogénicité. [less ▲]

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See detailIron, zinc and manganese interaction within the frd3 Arabidopsis mutant
Scheepers, Maxime ULg; Spielmann, Julien ULg; Goormaghtigh, Erik et al

Poster (2017, January 12)

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See detailGeneralized Pascal triangles for binomial coefficients of words: a short introduction
Stipulanti, Manon ULg

Conference (2017, January 09)

We introduce a generalization of Pascal triangle based on binomial coefficients of finite words. These coefficients count the number of times a finite word appears as a subsequence of another finite word ... [more ▼]

We introduce a generalization of Pascal triangle based on binomial coefficients of finite words. These coefficients count the number of times a finite word appears as a subsequence of another finite word. Similarly to the Sierpiński gasket that can be built as the limit set, for the Hausdorff distance, of a convergent sequence of normalized compact blocks extracted from Pascal triangle modulo 2, we describe and study the first properties of the subset of [0, 1] × [0, 1] associated with this extended Pascal triangle modulo a prime p. [less ▲]

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See detailMacroevolutionary patterns in sea breams, emperors and allies (Sparoidea, Acanthomorpha)
Santini, Francesco; Olivier, Damien ULg; Frederich, Bruno ULg

Poster (2017, January 07)

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See detailPatterns of body size and shape diversification in marine angelfishes (Pomacanthidae)
Frederich, Bruno ULg; Santini, Francesco; Konow, Nicolai et al

Conference (2017, January 06)

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See detailImpact of Serious Games on Health and Well-being of Elderly: A Systematic Review
Nguyen, Thi Thanh Hai; Ishmatova, Diana; Tapanainen, Tommi ULg et al

in Proceedings of the 50th Hawaiian International Conference on Systems Sciences (2017, January 06)

Besides their entertainment value, serious games can have beneficial therapeutic effects for elderly people that improve their health and well-being. Games are likely to be accepted by elderly persons who ... [more ▼]

Besides their entertainment value, serious games can have beneficial therapeutic effects for elderly people that improve their health and well-being. Games are likely to be accepted by elderly persons who have enjoyed games their lives, and because there are more and more of such elderly, it is important to investigate games as a therapeutic device. This research reviewed the literature focusing on the effects of games on elderly persons in three main types of effects: physical, cognitive, and social effects. The majority of reviewed papers focused on physical and cognitive effects, and were published in recent years, which emphasizes the relative novelty of this topic and suggests that future research will need to address social impact as well. In addition, while many papers claimed positive impacts as a result of using games, our review found that more attention should be given to research designs. [less ▲]

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See detailMeasuring children motor skills with MOBACK-1: descriptive data and critical analysis
Jidovtseff, Boris ULg; Vandeloise, Vérane; Cloes, Marc ULg et al

in Sääkslahti, Arja (Ed.) The book of abstracts (2017, January)

Introduction The development of motor skills competencies is critical during childhood should be considered as the central learning outcome in physical education. Assessing motor competencies of the ... [more ▼]

Introduction The development of motor skills competencies is critical during childhood should be considered as the central learning outcome in physical education. Assessing motor competencies of the children make sense for teachers, trainers and researchers. The MOBAK-1 testing battery has been recently developed with the aim of assessing a wide panel of motor skills in relationship with locomotion and object-control abilities (1). This battery is complete and easy to use but present a scoring system that is only based on the success or the failure of the task. The aim of the study was to collect descriptive data from Belgian children with MOBAK-1, and to do a critical analysis of the scoring system through the analysis of the failure reasons in the tests. Methods The MOBAK-1 testing battery (1) was addressed to 166 primary school pupils (7.2±0.6 YO) coming from the French speaking part of Belgium. For each test, children received a score from 0 to 2, according to the number of success and fails in the task. Additionally, the evaluator took notes of the failure reasons when it occurs. Results Results from our subjects were in accordance with a previous study (1) for all tests except rolling and jumping tasks. The analysis of the failure reasons revealed that some criteria were too severe as some children failed while they were almost able to do the test correctly. This appeared especially in the rolling and jumping tests where the score did not really reflect the level of the children. Conclusion MOBACK-1 testing battery was successful to assess children motor skills for 6 out of 8 tests. Critical analysis of children failures in the tests revealed that some criteria seemed to be severe. Scoring system should be improved in order to inform about the children level in each test. References 1. Herrmann, C., Gerlach, E., & Seelig, H. (2015). Development and validation of a test instrument for the assessment of basic motor competencies in primary school. Measurement in Physical Education and Exercise Science, 19(2), 80-90. [less ▲]

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See detailQuartz-enhanced photo-acoustic spectroscopy for breath analyses
Petersen, J; Lamard, L; Feng, P et al

in Proceedings SPIE (2017, January), 10055

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See detailUNE INJECTION UNIQUE DE CELLULES STROMALES MESENCHYMATEUSES AU JOUR 3 APRES GREFFE HEPATIQUE EST INSUFFISANTE POUR INDUIRE UNE TOLERANCE OPERATIONNELLE
DETRY, Olivier ULg; VANDERMEULEN, Morgan ULg; DELBOUILLE, Marie-Hélène ULg et al

in Transplant International (2017, January), 30(suppl 1), 812

Introduction: Mesenchymal stromal cell (MSC) infusion could be a mean to establish donor-specific immunological tolerance in solid organ recipients. The aim of this phase 2 study was test the hypothesis ... [more ▼]

Introduction: Mesenchymal stromal cell (MSC) infusion could be a mean to establish donor-specific immunological tolerance in solid organ recipients. The aim of this phase 2 study was test the hypothesis of possible induction of operative tolerance by third-party MSC in liver transplant (LT) recipients. Methods: 10 stable and low-risk LT recipients under standard immunosup- pression (Tac-MMF- low dose steroids) received 1.5–3 9 106/kg third-party MSCs on post-operative day 3 ` 2. By protocol, progressive weaning of immunosuppression was attempted in patients who did not develop rejection and had normal graft function and month-6 graft biopsy. Tacrolimus was progressively tapered from day 180 to be discontinued by day 270. After day- 270 graft biopsy, MMF was progressively tapered and definitely discontinued by day 365 in the absence of rejection. Results: One patient from the MSC group was excluded from immunosup- pression withdrawal attempt due to HCC recurrence, and the 9 others met the necessary criteria. In one patient, tacrolimus and MMF withdrawal was performed without rejection. In two patients, MMF monotherapy was achieved at month 9, but graft rejection occurred during MMF withdrawal and was successfully treated by tacrolimus reintroduction. In 6 patients, the transam- inases significantly increased during tacrolimus withdrawal. In these cases, withdrawal was cancelled and liver tests normalised after increase of the tacrolimus dose. No graft was lost due to the withdrawal attempt. Conclusion: A single post transplant MSC injection is not sufficient to induce operative tolerance after LT. [less ▲]

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See detailImpact of the cumulated proteins and energy deficits on ICU patient’s outcome
PAGE, Isaline ULg; Warnier, Stéphanie; NYS, Monique ULg et al

in Annals of Intensive Care (2017, January), 7(Suppl1), 200

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See detailGenetic predisposition to breast cancer occuring in a male-to-female transsexual patient
Potorac, Iulia ULg; CORMAN, Vinciane ULg; Manto, Florence ULg et al

in Abstract book : Symposium "Perspectives in Endocrinology" (2017, January)

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See detailSomatic mosaicism is implicated in the etiology of XLAG syndrome
Rostomyan, Liliya ULg; Daly, Adrian ULg; Yuan, Bo et al

in Abstract book : Symposium "Perspectives in Endocrinology" (2017, January)

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See detailThermal history modelling to understand microstructures observed in repair technology of Ti-6Al-4V
Tran, Hoang Son ULg; Tchuindjang, Jérôme Tchoufack ULg; Hakan, Paydas et al

in Extended Abstract book of 14th Conf. on Computer Methods in Materials Technology KomPlasTech 2017 (2017, January)

Laser cladding is a metal deposition technique used to fabricate or repair components. In the present work Ti-6Al-4V deposits with a variable thickness are studied to assess the use of laser cladding as a ... [more ▼]

Laser cladding is a metal deposition technique used to fabricate or repair components. In the present work Ti-6Al-4V deposits with a variable thickness are studied to assess the use of laser cladding as a repair technology [1]. Solidification following melting and partial remelting of pre-existing layers is coupled with heat treatment of the solidified material due to the repeated heating and cooling cycles during building. The effect of the building strategy on the metallurgical characteristics of the material for a decreasing track length (DTL) or a constant track length (CTL) strategy is analyzed. Depending on the possible heat accumulation, the nature of the phases are determined by metallography and hardness maps of the deposits. Optical Microscopy (OM), Stereo Microscopy (SM), and Scanning Electron Microscopy (SEM) were used in order to study the microstructure. The generation of the microstructure results from the material thermal history. This one is computed by Finite Element Method and a careful analysis establishes the link between the phase state and the detailed thermal history. [less ▲]

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See detailUnsteady lifting line theory using the Wagner function
Boutet, Johan ULg; Dimitriadis, Grigorios ULg

in Proceedings of the 55th AIAA Aerospace Sciences Meeting (2017, January)

A method is presented to model the incompressible, attached, unsteady lift and moment acting on a thin three-dimensional wing in the time domain. The model is based on the combination of Wagner theory and ... [more ▼]

A method is presented to model the incompressible, attached, unsteady lift and moment acting on a thin three-dimensional wing in the time domain. The model is based on the combination of Wagner theory and lifting line theory trough the unsteady Kutta-Joukowsky theorem. The result is a set of closed form linear ordinary di erential equations that can be solved analytically or using a Runge-Kutta-Fehlberg algorithm. The method is validated against numerical predictions from an unsteady Vortex Lattice method for rectangular and tapered wings undergoing step or oscillatory changes in plunge or pitch. As the aerodynamic loads are written in state space form in the proposed method, they can be easily included in aeroelastic and flight dynamic calculations. [less ▲]

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See detailUne anomalie du Congrès de Vienne : le Territoire neutre de Moresnet : Repenser la frontière politique et linguistiqueomalie du Congrès de Vienne : le Territoire neutre de Moresnet : Repenser la frontière politique et linguistique
Robelin, Cyril ULg

in Austriaca (2017, January)

An anomaly in the Congress of Vienna: Neutral Moresnet or how to rethink the political and linguistic boundaries. Neutral-Moresnet was a 3.4 km² neutral territory near Aachen. Its history is the result of ... [more ▼]

An anomaly in the Congress of Vienna: Neutral Moresnet or how to rethink the political and linguistic boundaries. Neutral-Moresnet was a 3.4 km² neutral territory near Aachen. Its history is the result of a misunderstanding. In Article 25 of the Vienna Final Act, Moresnet is annexed to Prussia, but in Article 66 this province is placed under Dutch sovereignty. In the site of "Vieille-Montagne” an important zinc mine is discovered. They decided to establish co-sovereignty. From then on, two commissioners oversee the area. Over time, Moresnet developed a national folklore, especially with the process of Nation-State at the end of the 19th century. This triangle is seen by foreign observers as the smallest country in the world and even as an "imaginary country" (vampires, new Eldorado). Some Esperantists hoped to make Moresnet the country of international languages ​​because in this tiny territory German, French and dialects are spoken. Moresnet rethinks the concept of border. After the Treaty of Versailles in 1919, this small state belongs to Belgium. [less ▲]

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See detailExperimental Assessment of the Influence of Interface Geometries on Structural Dynamic Response
Dossogne, Tilàn ULg; Jerome, Trevor; Lancereau, Damien et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXV (2017, January)

Jointed interfaces are sources of the greatest amount of uncertainty in the dynamics of a structural assembly. In practice, jointed connections introduce nonlinearity into a system, which is often ... [more ▼]

Jointed interfaces are sources of the greatest amount of uncertainty in the dynamics of a structural assembly. In practice, jointed connections introduce nonlinearity into a system, which is often manifested as a softening response in frequency response, exhibiting amplitude dependent damping and stiffness. Additionally, standard joints are highly susceptible to unrepeatability and variability that make meaningful prediction of the performance of a system prohibitively difficult. This high degree of uncertainty in joint structure predictions is partly due to the physical design of the interface. This paper experimentally assesses the influence of the interface geometry on both the nonlinear and uncertain aspects of jointed connections. The considered structure is the Brake-Reuß beam, which possesses a lap joint with three bolted connections, and can exhibit several different interface configurations. Five configurations with different contact areas are tested, identified, and compared, namely joints with complete contact in the interface, contact only under the pressure cones, contact under an area twice that of the pressure cones, contact only away from the pressure cones and Hertzian contact. The contact only under the pressure cone and Hertzian contact are found to behave linearly in the range of excitation used in this work. The contact area twice that of the pressure cone behaves between the complete contact and contact only under the pressure cone cases. [less ▲]

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See detailInnovations Thérapeutiques appliquées au diabète
RADERMECKER, Régis ULg

Conference (2017, January)

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See detailUne série consécutive de 125 greffes hépatiques à partir de donneurs cadavériques en mort circulatoire
DETRY, Olivier ULg; MEURISSE, Nicolas ULg; HANS, Marie-France ULg et al

in Transplant International (2017, January), 30(Suppl 1), 2481

Introduction: Donation after circulatory death (DCD) has been proposed to partially overcome the organ donor shortage. DCD-LT remains controversial, with reported increased risk of graft loss and ... [more ▼]

Introduction: Donation after circulatory death (DCD) has been proposed to partially overcome the organ donor shortage. DCD-LT remains controversial, with reported increased risk of graft loss and retransplantation. The authors retrospectively reviewed a single centre experience with controlled DCD-LT in a 14-year period. Patients and Methods: 125 DCD-LT were consecutively performed between 2003 and 2016. All donation and procurement procedures were performed as controlled DCD in operative rooms. Data are presented as median (ranges). Median donor age was 56 years (16–84). Most grafts were flushed with HTK solution in the first part of experience, and more recently with IGL1. Allocation was centre-based. Median follow-up was 52 (1–164) months. No patient was lost to follow-up. Results: Median total DCD warm ischemia was 19 min (9–39). Median cold ischemia was 238 min (105–576). Patient survivals were 90.2%, 77.5% and 74.5 % at 1.3 and 5 years, respectively. Graft survivals were 87.7%, 76.3% and 73.2% at 1.3 and 5 years, respectively. Biliary complications included anas- tomotic strictures and extrahepatic main bile duct ischemic obstruction, that were managed either by endoscopy or hepatico-jejunostomy. No PNF was observed in this series and one graft was lost due to ischemic cholangiopathy. Discussion: In this series, DCD LT appears to provide results similar to classical LT. Short cold ischemia and recipient selection with low MELD score may be the keys to good results in DCD LT, in terms of graft survival and avoidance of ischemic cholangiopathy. [less ▲]

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See detailIdentification of complex nonlinearities using cubic splines with automatic discretization
Dossogne, Tilàn ULg; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg

in Proceedings of the International Modal Analysis Conference (IMAC) XXXV (2017, January)

One of the major challenges in nonlinear system identification is the selection of appropriate mathematical functions to model the observed nonlinearities. In this context, piecewise polynomials, or ... [more ▼]

One of the major challenges in nonlinear system identification is the selection of appropriate mathematical functions to model the observed nonlinearities. In this context, piecewise polynomials, or splines, offer a simple and flexible representation basis requiring limited prior knowledge. The generally-adopted discretization for splines consists in an even distribution of their control points, termed knots. While this may prove successful for simple nonlinearities, a more advanced strategy is needed for nonlinear restoring forces with strong local variations. The present paper specifically introduces a two-step methodology to select automatically the location of the knots. It proposes to derive an initial model, using nonlinear subspace identification, and incorporating cubic spline basis functions with fixed and equally-spaced abscissas. In a second step, the location of the knots is optimized iteratively by minimizing a least-squares cost function. A single-degree-of-freedom system with a discontinuous stiffness characteristic is considered as a case study. [less ▲]

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See detailMARTIAN ULTRAVIOLET AURORA: RESULTS OF MODEL SIMULATIONS
Gérard, Jean-Claude ULg; Soret, Lauriane ULg; Shematovich, V.I. et al

Conference (2017, January)

We present recent modeling results based on observations performed with the UV spectrographs on board the Mars Express and MAVEN missions.Two types of aurora are discussed: the localized and transient ... [more ▼]

We present recent modeling results based on observations performed with the UV spectrographs on board the Mars Express and MAVEN missions.Two types of aurora are discussed: the localized and transient discrete aurora and the more stable diffuse aurora observed during periods of active solar periods. [less ▲]

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See detailAnalysis of Kids’ Athletics implementation in Wallonia
Jidovtseff, Boris ULg; Wuillaume, Sandrine; Cloes, Marc ULg

in Sakslahti, Arja (Ed.) Book of abstracts (2017, January)

Introduction Since decades in Wallonia (French speaking part of Belgium), athletics competitions for children are miniaturized versions of adults’ competitions. Despite the fact that it has been pointed ... [more ▼]

Introduction Since decades in Wallonia (French speaking part of Belgium), athletics competitions for children are miniaturized versions of adults’ competitions. Despite the fact that it has been pointed out that such kind of approach, based on performance, is not appropriated for motor learning and could result in an increased rate of dropout (1), no change has occurred since years. The International Association of Athletic Federation has developed and promoted a more appropriate model of competition for children under 10 years old: ‘Kids’Athletics’ (KA)(2). While this model is well known, it has not been selected by the Wallonian federation as the gold standard yet . This study aimed to analyze the perceived interest of a group of experts about KA, and to identify the strategies that could be considered for KA implementation in Wallonia. Methods Semi-structured interviews were conducted with 14 athletics or marketing experts (demographic presentation; knowledge about KA and personal experience with KA ; opinion about KA model in comparison with the traditional one, and ; strategies that could be helpful to implement KA in Wallonia). Results Findings showed that 12 experts knew the KA concept while 9 have experimented it in their own club. None mentioned an official competition between clubs. A list of KA’s advantages and disadvantages has been identified (organization, children needs, and development). All experts considered that KA was more adapted to children than traditional competition. Based on subjects’ proposals, a progressive strategy for KA implementation is suggested. It includes the support of the federation and recommends to start with the more convinced clubs. Conclusion This study confirms that KA should be implemented in Wallonia. In order to optimize the chances of success, it would be appropriate to multiply actions, taking into account the potential barriers identified by the experts. Keywords : Children, track and field, competition, Kids Athletics, Wallonia. References Gozzoli C., Locatelli, E., Massin, D., & Wangemann, B.. (2002). IAAF Kids’ Athletics : A team event for children. Monaco: IAAF Shields, D. L. & Bredemeier, B. L. (2009). True competition: A guide to pursuing excellence in sport and society. Champaign, IL: Human Kinetics. [less ▲]

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See detailPolicy Dialogue Makes It Happen!
Porignon, Denis ULg

Conference (2017)

This presentation synthesizes positive achievements made in the frame of the EU-Luxembourg / WHO Universal Health Coverage Partnership over the last 5 years (2012-2016). It presents activities conducted ... [more ▼]

This presentation synthesizes positive achievements made in the frame of the EU-Luxembourg / WHO Universal Health Coverage Partnership over the last 5 years (2012-2016). It presents activities conducted by the several hundreds of persons who were involved in the field work, as well as in Regional Offices and WHO HQ. Please see details on www.uhcpartnership.net [less ▲]

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See detailConstraints on quasar broad line regions from microlensing
Hutsemekers, Damien ULg; Braibant, Lorraine ULg; Sluse, Dominique ULg et al

Conference (2017)

Gravitational microlensing is a powerful tool allowing one to unveil the structure of quasars on sub-parsec scale, and in particular of the broad emission line region. This is possible owing to the ... [more ▼]

Gravitational microlensing is a powerful tool allowing one to unveil the structure of quasars on sub-parsec scale, and in particular of the broad emission line region. This is possible owing to the analysis of the microlensing-induced broad line deformation (core/wings or red/blue) observed in some gravitationally lensed quasars. After a description of examples of strong profile deformations, different in low- and high-ionization lines, we present newly developed simulations of line profile changes for various models of the emission line region in presence of microlensing. We explain how these simulations, confronted to observations of microlensed quasars, strongly favors the Keplerian disk model for the low-ionization emission line region. We also discuss how microlensing helps to probe the structure of other unresolved components, such as the broad absorption line and the continuum scattering regions. [less ▲]

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See detailSelf-regulation in addiction: The dual-process model in emerging adulthood
Hoffmann, Joelle; Glowacz, Fabienne ULg; Schmits, Emilie ULg

Poster (2017)

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See detailCan Autonomous Vehicles Reduce Car Mobility? Evidence from a Stated Adaptation Experiment in Belgium
Cools, Mario ULg; Rongy, Caroline; Limbourg, Sabine ULg

in Transportation Research Board Annual Meeting. Compendium of Papers (2017)

From literature, it is clear that the discussion about the potential benefits and drawbacks of autonomous vehicles is not finished. In order to provide insight into this discussion, this paper ... [more ▼]

From literature, it is clear that the discussion about the potential benefits and drawbacks of autonomous vehicles is not finished. In order to provide insight into this discussion, this paper investigates different attitudes with respect to different key factors for the deployment of system of autonomous taxis. To this end, a stated adaptation experiment was carried out in Belgium in March 2016. To investigate which factors influence the variables of interest, i.e. (i) the number of minutes one is prepared to wait before an autonomous taxi picks up the person, (ii) the ownership of a private car when autonomous taxis are available, (iii) the willigness to share an autonomous taxi, (iv) the permittance for the autonomous vehicle to take a detour when it is beneficial for the society, and (v) the willigness to share your private agenda to ensure a timely autonomous taxi, different regression models are constructed. The results show that the considered explanatory factors only capture a small part of the variability five variables of interest. This is as signal that market segmentation might be very challenging. Besides, this is an indication that a broader range of factors should be included such as life-style factors and psychological constructs. Finally, this acknowledges the need for some skepticism with regard to the potential benefits of autonomous vehicles. The results are interesting for providing realistic boundaries and cross-classification in further simulation studies that look at the benefits of autonomous vehicles. [less ▲]

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See detailIs Political Transnationalism a Mechanism for Peacebuilding in the on-Going Security?
Lara Guerrero, Larisa Viridiana ULg

Conference (2017)

From December 2006 through to the end of 2015, over 150,000 people were intentionally killed in Mexico. Accordingly, from 2006 to the present day, the number of murders and enforced disappearances related ... [more ▼]

From December 2006 through to the end of 2015, over 150,000 people were intentionally killed in Mexico. Accordingly, from 2006 to the present day, the number of murders and enforced disappearances related to organised crime in Mexico has skyrocketed. The United Nations Office of Drugs and Crime has indicated that from 2007 to 2010, Mexico was the country with the highest rate of increase in intentional homicides. The so-called “war” against organized crime has created a context of increasing insecurity and escalating violence, impunity and corruption across the entire country. Against the backdrop of the security crisis, members of Mexican society have organised national and transnational movements to denounce the government. For instance, some observers have hypothesised that the case of the 43 missing students of Ayotzinapa in September 2014 raised awareness amongst the Mexican population and bolstered their political engagement in both national territory and abroad. Mexicans living in the United States, Spain, France, Belgium, Australia, New Zealand and other places around the world have engaged politically to demonstrate their support for the victims and denounce the incapacity of the current State to govern. This paper looks at the political transnational movements organised by Mexican migrants living specifically in Brussels and Paris to answer the following question: Is political transnationalism a tool for peacebuilding for the Mexican on going security crisis? This paper evaluates how has transnational political activism changed the dynamics of the on-going conflict. [less ▲]

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See detailFrance et Italie à l'époque du Grand Schisme. La politique par les bannières
Masson, Christophe ULg

in Vaillancourt, Luc (Ed.) « Des bruits courent » : rumeurs et propagande au temps des Valois (2017)

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See detailQuelques observations sur la tenture de l’Histoire d’Hercule des Musées royaux d’Art et d’Histoire de Bruxelles
Laruelle, Anne-Sophie ULg

in Actes du neuvième congrès de l'Association des Cercles francophones d'Histoire et d'Archéologie de Belgique (2017)

Depuis 1953, les Musées royaux d’Art et d’Histoire possèdent quatre tapisseries, illustrant autrefois une Histoire d’Hercule, tissées durant la seconde moitié du XVIe siècle dans l'atelier bruxellois de ... [more ▼]

Depuis 1953, les Musées royaux d’Art et d’Histoire possèdent quatre tapisseries, illustrant autrefois une Histoire d’Hercule, tissées durant la seconde moitié du XVIe siècle dans l'atelier bruxellois de Frans Schavaert. La découverte de quatre autres pièces, dispersées dans diverses collections privées, a permis à quelques spécialistes de reconsidérer la tenture dans son ensemble. L’objectif de cette communication est de réexaminer cette suite, encore trop souvent méconnue des chercheurs, qui constitue un bel exemple, toujours conservé en Belgique, du style Renaissance dans l’art de la tapisserie bruxelloise. Cette intervention consiste à revoir les aspects iconographique et stylistique de la tenture, à retracer la date du tissage, particulièrement à l’aide des bordures, et à fournir de nouvelles données sur l’œuvre du licier [less ▲]

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See detailTraduire le roman philosophique : le cas des Pages, de Murray Bail
Herbillon, Marie ULg

Conference (2017)

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See detailPlant fibers for renewable growing media: acidification or inoculation with biocontrol fungi to reduce the N drawdown in extruded Miscanthus straw
Vandecasteele, Bart; Debode, Jane; Muylle, Hilde et al

Conference (2017)

Peat based growing media are not sustainable and not easily colonized by biocontrol organisms. Plant fibers may allow for partially replacing peat in growing media and they may have the potential to carry ... [more ▼]

Peat based growing media are not sustainable and not easily colonized by biocontrol organisms. Plant fibers may allow for partially replacing peat in growing media and they may have the potential to carry biocontrol organisms. However, they may also carry plant pathogens and they may vary in their degree of biodegradability and their interaction with N, and thus they may affect the quality of growing media. Several defiberization techniques were tested for flax shives, miscanthus and reed straw for their ability to (1) kill plant pathogens present on the plant fibers, (2) reduce the N-fixation risk of the fibers and (3) provide fibers serving as carrier of biocontrol fungi. Flax shives obtained from various sources were colonized by viable microsclerotia of the plant pathogen Verticillium dahliae. However, when sufficiently high temperatures were reached during defiberization, this technique killed the plant pathogen on the shives, allowing the use of defiberized flax shives in growing media. Untreated flax shives, miscanthus or reed straw were characterized by high N immobilization. Using these plant fibers as peat replacement in growing media may thus reduce N availability for plants. According to the incubation trials results, extruding, retruding and applying disc refining significantly reduced the N immobilization for miscanthus straw without affecting the pH of the fiber, while steam explosion significantly reduced the pH and resulted in higher N immobilisation. Extruding and retruding the flas shives increased the N fixation. Defiberized pure miscanthus or reed straw and flax shives were easily colonized by fungal biocontrol strains, e.g. Trichoderma spp. . The effect of inoculation with fungi or acidification on N fixation was tested for extruded miscanthus fibers. Inoculation with shiitake (Lentinula edodes) or Agrocybe aegerita, i.e., 2 fungi without biocontrol properties was effective in reducing the N immobilization only in a specific pH range and at high colonization degree and/or for fungi with fast colonization, but never increased the N fixation when successfully inoculated. Inoculation of extruded Miscanthus fibers with different strains of biocontrol fungi did not increase nor decrease the N immobilization. Reducing the pH of the fibers between pH 2.5 and 4.7 was effective in reducing the microbial activity and the N fixation. Finetuning the conditions is necessary when applying acidification or inoculation for reducing the N fixation in plant fibers. N immobilization in growing media is related to biological activity. We compared 3 methods to determine the microbial biomass on plant fibers in growing media incubated with mineral N fertilizers, i.e., fumigation-extraction, plfa and Q-PCR, and used water-extractable C to measure the easily available C in the plant fibers. The extrusion of miscanthus straw with or without inoculation of a biocontrol organism reduced the N immobilization when compared with the pure fiber. In case of flax shives, defiberization of plant fibers kills plant pathogens that may be present on the fibers when sufficiently high temperatures are reached during defiberization. Inoculation of plant fibers with biocontrol fungi may be beneficial for increasing the disease resistance in growing media, and we found that inoculation of extruded Miscanthus fibers with biocontrol fungi did not increase nor decrease the N immobilization. [less ▲]

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See detailProjets de Récupération de chaleur fatale suivis par l’ULg
Lemort, Vincent ULg; Le, Van Long; Gendebien, Samuel ULg et al

Conference (2017)

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See detailSeasonal Transport in Mars’ Mesosphere revealed by Nitric Oxide Nightglow vertical profiles and global images from IUVS/MAVEN
Stiepen, Arnaud ULg; Stewart; Jain et al

Conference (2017)

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly ... [more ▼]

We analyze the ultraviolet nightglow in the atmosphere of Mars through Nitric Oxide (NO) δ and γ bands emis- sions. On the dayside thermosphere of Mars, solar extreme ultraviolet radiation partly dissociates CO2 and N2 molecules. O(3P) and N(4S) atoms are carried by the day-to-night hemispheric transport. They preferentially descend in the nightside mesosphere in the winter hemisphere, where they can radiatively recombine to form NO(C2Π). The excited molecules promptly relax by emitting photons in the UV δ bands and in the γ bands through cascades via the A2Σ, v’ = 0 state. These emissions are thus indicators of the N and O atom fluxes transported from the dayside to Mars’ nightside and the winter descending circulation pattern from the nightside thermosphere to the mesosphere (e.g. Bertaux et al., 2005 ; Bougher et al., 1990 ; Cox et al., 2008 ; Gagné et al., 2013 ; Gérard et al., 2008 ; Stiepen et al., 2015). Observations of these emissions have been accumulated on a large dataset of nightside disk images and vertical profiles obtained at the limb by the Imaging Ultraviolet Spectrograph (IUVS, McClintock et al., 2015) instrument when the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft is at its apoapsis and its periapsis phases along its orbit, respectively. We present discussion on the variability in the brightness, altitude and topside scale height of the emission with season, geographical position and local time and possible interpretation for local and global changes in the meso- sphere dynamics. IUVS images and limb scans reveal unexpected complex structure of the emission. The brightest emission is observed close to the winter pole. The emission is also surprisingly more intense in some sectors located close to the equator : at 120 ̊ and 150 ̊ longitude. Observations also reveal spots and streaks, indicating irregularities in the wind circulation pattern and possible impact of waves and tides. The disk images and limb profiles are compared to the LMD-MGCM model (Gonzàlez-Galindo et al., 2009 ; Lopez-Valverde et al., 2011) to focus on the seasonal, local time and geographical influences on the NO Nightglow emission. We will also provide a statistical study of the regions of enhanced brightness (i.e. splotches and streaks) and discuss possible interpretation from the comparison to the GCM. [less ▲]

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See detailAssessing Inter-and Intramolecular Continuous-Flow Strategies towards Methylphenidate Hydrochloride
Gerardy, Romaric ULg; Winter, Marc; Vizza, Alessandra et al

in Reaction Chemistry and Engineering (2017)

The batch-to-flow translation of inter- and intramolecular strategies for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. Both ... [more ▼]

The batch-to-flow translation of inter- and intramolecular strategies for the diastereoselective preparation of the active pharmaceutical ingredient threo-methylphenidate hydrochloride is presented. Both inter- and intramolecular strategies imply the telescoping of multiple processing steps and the generation of unstable diazospecies under continuous-flow conditions. The intermolecular strategy relies on an unprecedented continuous-flow Rh-catalyzed intermolecular C-H carbene insertion, providing enriched threo-N-Boc methylphenidate in 38% or 19% isolated yield according to sequential or fully telescoped processes, respectively. Quantitative Boc-deprotection is carried out off-line. The intramolecular strategy relies on a continuous-flow thermal intramolecular C-H carbene insertion, providing enriched threo-methylphenidate hydrochloride in 70% isolated yield. A continuous-flow photochemical alternative is also presented. The critical step of the most promising intramolecular strategy is implemented on mesoscale in a pilot-scale continuous-flow reactor. [less ▲]

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See detailPROPOSITION D'UN SUPPORT D'AIDE À LA DÉCISION POUR L'AMÉLIORATION DE L'ACCÈS À UNE EAU SOUTERRAINE DE MEILLEURE QUALITÉ DANS UN CONTEXTE DE CONTAMINATION GÉOGÉNIQUE AU FLUORURE AU BENIN (AFRIQUE DE L'OUEST)
Tossou, Joël; Hermans, Thomas ULg; Orban, Philippe ULg et al

in Geo-Eco-Trop : Revue Internationale de Géologie, de Géographie et d'Ecologie Tropicales (2017)

Les eaux souterraines des aquifères de socle cristallin de la partie centrale du Bénin (Département des Collines) présentent des concentrations élevées en fluorure, allant jusqu'à 7 mg/L alors que la ... [more ▼]

Les eaux souterraines des aquifères de socle cristallin de la partie centrale du Bénin (Département des Collines) présentent des concentrations élevées en fluorure, allant jusqu'à 7 mg/L alors que la norme recommandée par l'OMS est de 1.5 mg/L. La consommation de ces eaux à fortes teneurs en fluorure impacte la santé humaine. La population de la région est effectivement largement affectée par la fluorose dentaire. Les investigations hydrogéochimiques révèlent que l’origine de ces teneurs anormales est géogénique avec une forte contribution des minéraux ferromagnésiens, principalement la biotite. Ce travail se propose de réaliser une double cartographie à l'échelle du département des Collines: (i) une carte de l'estimation des teneurs en fluorure dans les eaux souterraines par krigeage ordinaire et (ii) une carte de la probabilité d'excéder la valeur guide de l’OMS (1.5 mg/L) en fluorure dans les eaux par krigeage d'indicatrices. Outre la cartographie en elle-même, l'analyse de la structure spatiale des données (teneurs en fluorure des eaux souterraines) à travers le calcul des variogrammes montre qu'il existe un lien fort entre celles-ci et les structures géologiques dominantes, confirmant l'origine géogénique du fluorure. Ces informations cartographiques serviront de support à la décision pour les décideurs et les gestionnaires de la ressource quant au choix judicieux des zones de captage d'eau potable pour minimiser/éviter les risques de fortes teneurs en fluorure. [less ▲]

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See detailVirus Discovery: After the deluge ... ...the framework!!!
Massart, Sébastien ULg

Conference (2017)

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See detailContract farming application in the Vietnamese shrimp value chain
Thi Minh Ho, Hop; Burny, Philippe ULg

in Petropoulos, D.; Kyriazopoulos, G. (Eds.) Conference proceedings of 2nd International Conference of Development & Economy (ICODECON) (2017)

Shrimp value chain in Vietnam functions with a large number of farmers. The stay in the weakest position in the chain due to their small individual scale with an average land of about 0.5 ha/farm, and low ... [more ▼]

Shrimp value chain in Vietnam functions with a large number of farmers. The stay in the weakest position in the chain due to their small individual scale with an average land of about 0.5 ha/farm, and low skills (Ho, 2012). As a leader and holding the strongest power in the shrimp value chain, the processors determine shrimp prices and set up requirements of shrimp quality and size in the market though quality control has not been completely implemented due to the limitations of financial capital, knowledge, awareness, as well as the quality of raw material supplied by collectors and farmers. In order to help the shrimp sector to work more efficiently, the Vietnamese government brought together shrimp farmers and plant processors through a farming contract. Two years after this application, the contract farming model failed due to the floor price mechanism, risk sharing, small scale of the model while there are excess suppliers in the market, administrative misconception and inefficient public management. As a result, farmers still stay at the weakest position and the shrimp sector could not improve its product safety to adapt to the requirement of import markets. The study results recommend necessarily a planning and projection of shrimp production zones, re-organizing shrimp farmers into legal teams or groups or coopératives to increase the size of the existing shrimp cultivation units in Vietnam. [less ▲]

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See detailEnhancement of the internalization of lipid nanocapsules in human glioblastoma cells: Effect of surface concentration of NFL peptide
Karim, Reatul ULg; Lepeltier, Elise; Palazzo, Claudio ULg et al

Poster (2017)

Le glioblastome multiforme (GBM) est un des cancers les plus fatal, avec une médiane de survie de 14 mois après traitement. Il est donc nécessaire de développer de nouvelles thérapies plus efficaces. La ... [more ▼]

Le glioblastome multiforme (GBM) est un des cancers les plus fatal, avec une médiane de survie de 14 mois après traitement. Il est donc nécessaire de développer de nouvelles thérapies plus efficaces. La fonctionnalisation en surface de nanocapsules lipidiques (LNC) avec le peptide NFL-TBS.40-63 (NFL) a déjà montré une amélioration de leur internalisation dans des cellules de glioblastome murin. Le but de cette étude a été d’évaluer l’impact de la concentration en NFL présente en surface des LNC sur l’internalisation de ces dernières dans des cellules humaines de GBM U87MG. De plus, le mécanisme d’internalisation LNC-NFL a été étudié. Une sonde fluorescente (DiA) a été encapsulé dans : des LNC (F1), des LNC avec 0.86 % et 2.58 % (w/w) de NFL adsorbé à la surface (F2 et F3 respectivement). Des analyses par cytométrie en flux (FACS) ont révélé une internalisation cellulaire de F3 plus importante de 46.4 et 6.8 fois après 30 min, de 21.6 et 6.1 fois après 1 heure, de 31.5 et 1.6 fois après 6 heures et de 7.3 et 1.1 fois après 24 heures, comparés à F1 et F2 respectivement. L’internalisation de F3 dans les cellules U87MG s’est révélée être énergie-dépendant, avec comme mécanisme principal la macropinocytose. Les cinétiques de désorption du peptides (obtenues par dialyse de F3 dans du Tris-Buffer pH 7.4 à 37°C suivi par une HPLC analytique) ont montré que 66 % de NFL restaient à la surface des LNC après 6h de dialyse, montrant une désorption lente. De plus, les trois formulations ont montré une faible activation du complément. Du fait d’une internalisation significativement plus prononcée et rapide, F3 semble être prometteur pour améliorer l’efficacité des thérapies antiGBM. De plus, la lente désorption du NFL de la surface des LNC et la faible consommation du complément font de F3 une thérapie ciblé prometteuse contre le GBM. [less ▲]

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See detailEffects of the soil pore network architecture on the soil’s physical functionnalities
Smet, Sarah ULg; Beckers, Eléonore ULg; Léonard, Angélique ULg et al

in Geophysical Research Abstracts (2017), 19

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See detailThe Characteristics of al-Maqrīzī's Handwriting
Bauden, Frédéric ULg

in Bauden, Frédéric; Franssen, Elise (Eds.) "In the Author's Hand": Holograph and Authorial Manuscripts in the Islamic Handwritten Tradition (2017)

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See detailLe juge doit-il être frappé d'anathème? Examen de la responsabilité civile pour la faute du juge en droits québécois et belge
Bouhon, Frédéric ULg; Lacroix, Mariève

in Les dynamiques de modernisation de la justice dans les pays du nord et du sud (2017)

L'article présenté dans le cadre du colloque de Casablanca est un résumé des travaux de droit comparé menés à propos de la question de la responsabilité civile pour la faute des juges dans l'exercice de ... [more ▼]

L'article présenté dans le cadre du colloque de Casablanca est un résumé des travaux de droit comparé menés à propos de la question de la responsabilité civile pour la faute des juges dans l'exercice de leur fonction, au Québec et en Belgique. [less ▲]

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See detailA Duality for Boolean Contact Algebras
Raskin, Julien ULg; Hansoul, Georges ULg

Conference (2017)

The well-known de Vries duality, established by H. de Vries in 1962, states that the category of compact Hausdorff spaces is dually equivalent to that of de Vries algebras. The notion of Boolean contact ... [more ▼]

The well-known de Vries duality, established by H. de Vries in 1962, states that the category of compact Hausdorff spaces is dually equivalent to that of de Vries algebras. The notion of Boolean contact algebra (BCA) was developed independently in the context of region-based theory of space. Düntsch and Winter established a representation theorem for BCAs, showing that every BCA is isomorphic to a dense subalgebra of the regular closed sets of a T_1 weakly regular space. It appears that BCAs are a direct generalization of de Vries algebras, and that the representation theorem for complete BCAs generalizes de Vries duality for objects. During a conference, Vakarelov raised the question of dualizing morphisms. We answer this question using concepts similar to those of modal logic's neighborhood semantics. [less ▲]

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See detailLa métacognition chez l'enfant: un terrain de chasse pour comprendre la performanc mnésique
Geurten, Marie ULg

Conference (2017)

Un des facteurs essentiels qui semble être impliqué dans l’amélioration de la performance en mémoire épisodique au cours de l’enfance est la métacognition. Généralement, les auteurs considèrent que les ... [more ▼]

Un des facteurs essentiels qui semble être impliqué dans l’amélioration de la performance en mémoire épisodique au cours de l’enfance est la métacognition. Généralement, les auteurs considèrent que les habiletés métacognitives émergent relativement tard au cours du développement de l’enfant, raison pour laquelle elles ne sont pas supposées influencer la performance mnésique avant l’âge de 7 ou 8 ans. Pourtant, des études récentes ont montré que les enfants possédaient déjà certaines compétences basiques leur permettant d’évaluer et réguler leur performance mnésique dès l’âge de 4 ans. Nous exposerons ici les résultats de plusieurs recherches montrant le développement précoce des habilités métacognitives. Concrètement, nous présenterons les données récentes indiquant que les enfants sont capables d’utiliser de manière automatique certains indices basés sur le résultat de leur introspection (monitoring métacognitif) pour guider la prise de décision mnésique lors d’épreuves de reconnaissance. Enfin, nous nous pencherons sur certains résultats suggérant que des changements dans la façon dont les enfants utilisent les heuristiques métacognitives peuvent expliquer certaines améliorations de la performance en mémoire épisodique qui sont généralement observées tout au long de l’enfance. [less ▲]

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See detailL'étude SarcoPhAge: devenir des sujets sarcopéniques après 2 ans de suivi.
Beaudart, Charlotte ULg; Locquet, Médéa ULg; Reginster, Jean-Yves ULg et al

in L'Année Gérontologique (2017), 31(1), 42

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See detailThiamine and lipophilic thiamine precursors protect against oxidative damage in cultured neuroblastoma cells
Sambon, Margaux ULg; Wins, Pierre; Bettendorff, Lucien ULg

Conference (2017)

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and ... [more ▼]

Recent evidence suggests that thiamine (vitamin B1) and some of its derivatives can exert prominent neuroprotective effects in the mammalian brain, particularly in mouse models of Alzheimer’s disease and tauopathies. As orally administered thiamine crosses intestinal and blood-brain barriers only slowly, precursors with higher bioavailability e.g. sulbutiamine, benfotiamine and dibenzoylthiamine, have been developed. We investigated the protective effects of thiamine and those precursors in neuroblastoma cells cultured in a medium containing minimal amounts of thiamine (10 nM). We induced oxidative stress by incubating the cells (24h) in the presence of the neurotoxic agent paraquat (0.25 mM). This treatment reduced cell viability by 40%. When thiamine or the precursors were present simultaneously, we observed protective effects by the precursors while free thiamine was ineffective.Dibenzoylthiamine was most efficient, affording complete protection of cells at 10-20 μM. It also caused the highest increase in intracellular thiamine, suggesting that the protection from oxidative damage is linked to increased levels of free thiamine (rather than thiamine diphosphate) in the neuroblastoma cells. These results and others from our laboratory raise the possibility that dibenzoylthiamine might useful as a neuroprotective agent in neurodegenerative disease. [less ▲]

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See detailConnected devices in musculo-skeletal health
Bruyère, Olivier ULg

in Osteoporosis International (2017), 28(S1), 88

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See detailFaire les courses au quotidien. L’approvisionnement alimentaire d’un groupe de migrantes marocaines en Italie en temps de crise
Mescoli, Elsa ULg

in Matagne, Geoffroy; Van Ingelgom, Virginie (Eds.) Politiques de crise, crises du politique (2017)

La crise généralisée qui, depuis quelques années, a affaibli les économies de nombre d’états, a eu des conséquences sur la typologie des migrations internationales : les trajectoires, les projets, les ... [more ▼]

La crise généralisée qui, depuis quelques années, a affaibli les économies de nombre d’états, a eu des conséquences sur la typologie des migrations internationales : les trajectoires, les projets, les destinations, les départs se sont modifiés en fonction de nouveaux facteurs auxquels les individus et les groupes étaient confrontés . A côté de ces macro-dynamiques globales, la crise a également engendré des changements dans la vie quotidienne des migrants lorsqu’ils étaient déjà partis et qu’ils s’étaient déjà installés ailleurs. Dans ce cadre, ma contribution vise à analyser les pratiques d’approvisionnement alimentaire d’un groupe de migrantes marocaines en Italie mettant en place des stratégies pour faire face aux conséquences concrètes de la crise économique (notamment la diminution de leur pouvoir d’achat en conséquence de leur précarité professionnelle). Au travers de plusieurs déplacements dans la ville où elles habitaient et de la mobilisation des réseaux familiaux alimentant des circuits informels d’échange de biens, ces femmes satisfaisaient leurs différentes exigences – parmi lesquelles le désir de performer des préparations propres à leur mémoire incorporée – tout en répondant aux contraintes économiques déterminées par la crise. Je vais ainsi démontrer qu’en dépit des difficultés rencontrées, ces femmes arrivaient à exercer une agency dans le nouvel espace vécu et à se positionner de façon active au travers de leurs choix et conduites quotidiennes. [less ▲]

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See detailContradictions autour de la (dé)légitimation de l'engagement corporel. Pratiques cynégétiques et naturalistes
Massart, Clémence ULg

in Acte de colloque Atelier sur la contradiction (2017)

Une partition s’est opérée dans la gestion de l’environnement (en termes de domaine d’expertise et d’espaces dédiés) entre la nature remarquable, dont se préoccupe principalement le monde de la protection ... [more ▼]

Une partition s’est opérée dans la gestion de l’environnement (en termes de domaine d’expertise et d’espaces dédiés) entre la nature remarquable, dont se préoccupe principalement le monde de la protection de la nature (gestionnaires d’espaces protégés et associations de protection de la nature), et la nature ordinaire sur laquelle se focalise le monde de la chasse. Or, par leur mobilité et leur capacité à transgresser les frontières, les animaux interrogent parfois cette partition et parviennent à relier ces deux formes de nature et, avec elles, leurs experts. Dans le cas de la Réserve Naturelle Régionale (RNR) de Saint Bonnet, les sangliers, qui circulent entre l’espace protégé et sa périphérie, font émerger un problème commun à ces deux mondes a priori peu reliés. Comment se rencontrent les savoirs et les expertises de ces mondes ? La gestion du sanglier parvient-elle à provoquer des rapprochements entre les divers savoirs sur la nature, voire à induire leur articulation ? En répondant à ces questions, nous illustrerons trois types de « contradictions » qui se manifestent à l’échelle collective et individuelle. Nous montrerons d’abord que la confrontation de ces experts et expertises s’inscrit dans deux mouvements parallèles et potentiellement contradictoires autour de la production de connaissances sur la nature : l’émergence d’une tendance cosmopolitique, qui prend en compte d’une diversité de savoirs, et un mouvement de professionnalisation de certains acteurs de l’environnement. Le croisement de ces deux mouvements engendre ensuite des controverses qui révèlent différentes formes d’oppositions entre les expertises ancrées dans l’expérience et celles ancrées dans l’expérimentation. Enfin, ces oppositions révèlent elles-mêmes des contradictions dans les arguments et les pratiques de chaque acteur. [less ▲]

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See detailAnosognosie et monitoring des souvenirs associés au « soi » dans la Maladie d’Alzheimer
Genon, Sarah ULg; Mélon, Marlène; Collette, Fabienne ULg et al

Conference (2017)

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et ... [more ▼]

Chez les patients atteints de maladie d’Alzheimer (MA), on observe dès les stades débutants d’une part un phénomène d’anosognosie, qui peut être considéré comme une altération de la conscience de soi, et d’autre part un dysfonctionnement des processus de monitoring mnésique [1]. En outre, l’interaction entre le soi et la mémoire (conférant un bénéfice mnésique pour les informations associées à soi), apparaît significativement altérée dans la MA. Dans la présente étude, nous avons examiné les relations entre l’anosognosie et le monitoring lors de la récupération en mémoire d’informations expérimentalement associées à soi. Nous avons évalué les processus de monitoring lors de la récupération en mémoire à l’aide d’une tâche expérimentale de 32 paires visage-prénom, ainsi que l’anosognosie à l’aide du questionnaire d’anosognosie dans la démence (AQD, [2]) chez 20 patients MA et 20 personnes âgées contrôles (AC). Durant la phase d’encodage, les paires visage-prénom ont été présentées aux participants soit comme des personnes faisant partie de leur famille (soi) soit comme des personnes faisant partie de la famille de l’expérimentateur (autrui). Ensuite, nous avons évalué les jugements de « sentiment de savoir » (FOK), les performances de rappel et de reconnaissance, ainsi que les jugements de confiance (JOC) des participants pour le nom de chaque personne lorsque son visage était présenté. Nos résultats ont confirmé l’altération de la conscience de soi (c’est-à-dire l’anosognosie mesurée par l’AQD), l’altération du bénéfice mnésique pour les informations associées à soi, ainsi que l’altération des processus de monitoring lors de la récupération en mémoire (FOK et JOC) chez les patients MA. Néanmoins, une modification de l’interaction entre le soi et les processus de monitoring chez ces patients a été observée uniquement au niveau des sentiments de confiance pour des souvenirs erronés. Nous avons également observé que l’anosognosie des troubles comportementaux était significativement corrélée à la proportion de sentiments de confiance pour des reconnaissances erronées sur les items associés à soi. En conclusion, notre étude suggère que l’altération de la conscience des troubles comportementaux chez les patients MA pourrait être liée à un déficit de monitoring des souvenirs liés à soi. C’est-à-dire que la conscience altérée du dysfonctionnement au quotidien pourrait s’appuyer sur des souvenirs personnels déformés. [less ▲]

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See detailDeformación del espacio: cuestiones de representación y de identidad de Cortázar a la autoficción neofantástica
Licata, Nicolas ULg

in Agraz Ortiz, Alba; Sánchez-Hernández, Sara (Eds.) Topografías literarias. El espacio en la literatura hispánica de la Edad Media al Siglo XXI (2017)

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See detailLes circuits courts : organisations hybrides sous haute(s) tension(s) ?
Maréchal, Kevin ULg; Plateau, Lou; Holzemer, Laurence

Conference (2017)

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See detailLa bibliothèque d'Antoine Galland
Bauden, Frédéric ULg

in Bauden, Frédéric; Waller, Richard (Eds.) Antoine Galland (1646-1715) et son Journal. Actes du colloque international organisé à l’Université de Liège (16-18 janvier 2015) à l’occasion du tricentenaire de sa mort (2017)

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See detailEffect of agitation rate on oxydative degradation of monoethanolamine
Benkoussas, Hana ULg; Léonard, Grégoire ULg; Kerbachi, Rabah

Poster (2017)

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See detailPotential use of estetrol in sensorineural hearing loss protection
DELHEZ, Amandine ULg; Manfroid, Isabelle ULg; LEFEBVRE, Philippe ULg et al

in B-ENT (2017)

Introduction and Aims: Estrogens have a positive impact on the auditory function. Indeed, estradiol (E2) treatment in animals protects against acoustic trauma and aminoglycoside toxicity and its depletion ... [more ▼]

Introduction and Aims: Estrogens have a positive impact on the auditory function. Indeed, estradiol (E2) treatment in animals protects against acoustic trauma and aminoglycoside toxicity and its depletion can contribute to age-related hearing loss. However, estradiol is not suitable in clinical practice, given the increased risk of cancer and thromboembolic events. There is a need to find new treatments that present a higher benefit/risk ratio. In this work, we studied a new natural estrogen derivative, estetrol (E4), that was shown to act as a Selective Estrogen Receptor Modulator (SERM). Estetrol is thus able to display estrogen-like as well as antiestrogen activity depending on the target tissue. Interestingly, E4 allows the prevention of menopause symptoms such as osteoporosis or hot flushes through an agonistic action, whereas it exerts anti-estrogenic effects on the mammary gland. These preclinical data suggest that E4 presents a safer profile than E2. Material and Methods: To investigate whether this molecule presents otoprotective actions, we exposed P2 cultured organs of Corti to gentamicin, with or without estetrol (E4). After 48 hours of culture, hair cell survival was evaluated following anti-myosin VII Immunohistochemistry. We next moved on to in vivo studies using young zebrafish larvae (5dpf), since they constitute a highly effective model to determine the potential ototoxicity of drugs and to screen for candidates of hair cell protective agents. We monitored the survival of hair cells within neuromasts following chronic or acute exposure to gentamicin. Results: In cochlear culture, gentamicin-induced hair cell loss was significantly reduced by E4. Interestingly, the toxicity of aminoglycoside was also reduced in vivo upon treatment of zebrafish larvae with E4. Conclusion: The survival rate of hair cells was increased in the presence of estetrol both in vitro and in vivo indicating that estetrol constitutes an interesting protective drug against hearing loss. [less ▲]

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See detailEarthquake imprints on a lacustrine deltaic system: Example of the Kürk Delta along the East Anatolian Fault (Turkey)
Hubert, Aurelia ULg; El Ouahabi, Meriam ULg; Moreno, David et al

in Geophysical Research Abstracts (2017), 19

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See detailLocutif: une catégorie syntaxique de marqueurs de discours
Mazziotta, Nicolas ULg; Kahane, Sylvain

Conference (2017)

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See detailBlending of Radial HF Radar Surface Current and Model Using ETKF Scheme For The Sunda Strait
Subekti Mujiasih, ULg; Riyadi, Mochammad; Wandono, Dr et al

Conference (2017)

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine ... [more ▼]

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine radial velocity from HF Radar and u and v component of velocity from Global Copernicus - Marine environment monitoring service (CMEMS) model. The initial ensemble is based on the time variability of the CMEMS model result. Data tested are from 2 CODAR Seasonde radar sites in Sunda Strait and 2 dates such as 09 September 2013 and 08 February 2016 at 12.00 UTC. The radial HF Radar data has a hourly temporal resolution, 20-60 km of spatial range, 3 km of range resolution, 5 degree of angular resolution and spatial resolution and 11.5-14 MHz of frequency range. The u and v component of the model velocity represents a daily mean with 1/12 degree spatial resolution. The radial data from one HF radar site is analyzed and the result compared to the equivalent radial velocity from CMEMS for the second HF radar site. Error checking is calculated by root mean squared error (RMSE). Calculation of ensemble analysis and ensemble mean is using Sangoma software package. The tested R which represents observation error covariance matrix, is a diagonal matrix with diagonal elements equal 0.05, 0.5 or 1.0 m 2 /s 2 . The initial ensemble members comes from a model simulation spanning a month (September 2013 or February 2016), one year (2013) or 4 years (2013-2016). The spatial distribution of the radial current are analyzed and the RMSE values obtained from independent HF radar station are optimized. It was verified that the analysis reproduces well the structure included in the analyzed HF radar data. More importantly, the analysis was also improved relative to the second independent HF radar site. RMSE of the improved analysis is better than first HF Radar site Analysis. The best result of the blending exercise was obtained for observation error variance equal to 0.05 m 2 /s 2 . This study is still preliminary step, but it gives promising result for bigger size of data, combining other model and further development [less ▲]

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See detailLes fondamentaux de la pédagogie (expérimentale) appliqués à l'hygiène en 2017
Leclercq, Dieudonné ULg

in SF2H (Ed.) Actes du Colloque (2017)

Rapid overview of the three O-M-E pillars of a training program or an educative purposeful action applied to hygiene: (O) The objectives (structured by the ASCID model for diagnosing educational needs of ... [more ▼]

Rapid overview of the three O-M-E pillars of a training program or an educative purposeful action applied to hygiene: (O) The objectives (structured by the ASCID model for diagnosing educational needs of patients and of caregivers ; (M) The Methods (structured by the Learning Events Model- LEM) and (E) the Evaluations, illustrated by two methods quite different but complementary: confidence degrees in responses and OSCE: Objective Structured Clinical Exams. [less ▲]

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See detailDecision algorithms for the re-treatment with viscosupplementation in patients suffering from knee osteoarthritis
Henrotin, Yves ULg; Richette, Pascal; Raman, R et al

in Osteoarthritis and Cartilage (2017), 25

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See detailSurvey of ESCEO algorithm: methodology and results
Bruyère, Olivier ULg

in Osteoporosis International (2017), 28(S1), 635

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See detailEnergetic and Environmental Performances of a Domestic Hot Water Condensing Boiler Fired by Wood Pellets
Ngendakumana, Philippe ULg; Gabriele, Fabian; Restivo, Yannick et al

in Energy Procedia (2017)

In order to assess the performances of the domestic heating boilers with a CE mark, a wood pellets fired condensing boiler has been purchased and installed in the Laboratory for tests. The objective of ... [more ▼]

In order to assess the performances of the domestic heating boilers with a CE mark, a wood pellets fired condensing boiler has been purchased and installed in the Laboratory for tests. The objective of the study was not only to check the announced performances, but mainly to investigate the influence of the different parameters affecting the functioning of the boiler, the thermal efficiency and the pollutants (NOx and CO) emission being aimed at. Tests have been performed to study the influence of the cycling frequency of the burner functioning, the overall excess air, the return water temperature, and the output power of the boiler. As announced by the manufacturer, the tested boiler fulfils the requirements of the Blue Angel Label, but the recommended value for the excess air (1.2) can be reduced to a value of about 0.4 without excessive emissions of CO. The boiler could perform better if the ON period of the cycle of the burner is increased even better if the OFF period is suppressed. The NOx are mainly formed from the nitrogen content of the pellets and their emissions can only be reduced by a lower nitrogen content of the pellets than the limit stated in the standard. Random peaks observed in the evolution of CO, the boiler being operating in steady state regime, are attributed to the combustion process of pellets which is a non-continuous process by nature. [less ▲]

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See detailImmigration, antisemitism and toleration in Western Europe today: the case of Belgium
Martiniello, Marco ULg; Muriel, Sacco

Conference (2017)

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See detailFeedback effect on children's global metacognitive judgments
Geurten, Marie ULg; Meulemans, Thierry ULg

Poster (2017)

In three experiments, we investigated whether the feedback effect on the accuracy of children’s metacognitive judgments results from an improvement in monitoring processes or the use of the Anchoring-and ... [more ▼]

In three experiments, we investigated whether the feedback effect on the accuracy of children’s metacognitive judgments results from an improvement in monitoring processes or the use of the Anchoring-and-Adjustment heuristic. The purpose of Experiment 1 was to investigate whether 4-, 6-, and 8-year-old children are able to use feedback to increase the accuracy of their memory judgments. To do so, children in three age groups were divided into two experimental conditions (feedback or no feedback). After studying a list of associated words, participants were instructed to predict their future memory performance, and then they were asked to recall as many items as possible. Next, half of the participants were given concrete feedback about the accuracy of their global prediction. Once the feedback was provided, all children were presented with another set of associated word pairs and the procedure was repeated. Our results revealed that children’s predictions were more accurate in the feedback than in the no feedback condition, indicating that getting feedback about the accuracy of their judgments had a positive influence on their subsequent memory predictions. In Experiment 2, we sought to determine whether young children are able to use the Anchoring-and-Adjustment heuristic to guide their global memory predictions. For this purpose, 4-, 6-, and 8-year-old children were divided into three experimental conditions depending on the anchor that was provided (high, low, or no anchor). Data indicated that children’s predictions were higher in the high than in the low anchor condition, suggesting that children in all age groups adjusted their prospective judgment depending on the random anchor they were given. Finally, the primary aim of Experiment 3 was to determine whether the feedback effect can serve as an external anchor for children’s global prospective judgments. To do so, children (aged 4, 6, and 8 years) were presented with two memory tasks that differed in terms of difficulty. Participants were randomly assigned to an anchoring (high, low, or no anchor) and a feedback (feedback or no feedback) condition to obtain a balanced experimental design. Results showed that children in the feedback condition adjusted their predictions toward the feedback, regardless of the task’s difficulty. These findings are consistent with the hypothesis that external information provided by feedback is used as an anchor for judgment. This interpretation is strengthened by the correlation found between the two scores computed to assess participants’ susceptibility to anchoring and feedback effects, which indicates that children who are more sensitive to the anchoring effect are also more sensitive to the feedback effect. [less ▲]

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