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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 detailGlobal UV Imaging by MAVEN/IUVS: Diurnal Cloud Formation, Dust Storms and Atmospheric Scattering.
Schneider; Deighan; Jain et al

Conference (2017, January 17)

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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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 detailAn Analytical Framework for Existing Cultural Heritage Information Systems
Luczfalvy Jancsó, Andrea ULg; Jonlet, Benoît ULg; Delye, Emmanuel ULg et al

in Fogliaroni, Paolo; Ballatore, Andrea; Clementini, Eliseo (Eds.) Proceedings of Workshops and Posters at 13th International Conference on Spatial Information Theory (COSIT 2017) (2017)

This paper presents an analytical framework for classifying information systems developed for applications in the cultural heritage field. These can be nu-merous and quite different from one another ... [more ▼]

This paper presents an analytical framework for classifying information systems developed for applications in the cultural heritage field. These can be nu-merous and quite different from one another, depending for the purpose they were developed for. In order to assess if one of the already existing systems can be used or modified to fit our research goals, a list of requirements was established. Start-ing from those, categories were defined and the information systems are then compared and evaluated based on those characteristics. This analytical framework is an important step in our research since using a tool that is not appropriate for the study object will not be able to provide valuable information to answer the main research questions. [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 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 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 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 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 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 detailNowate: Waste heat re-use for greener trucks
Lemort, Vincent ULg; Guillaume, Ludovic ULg; Bettoja, Federica et al

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 detailNeurobiologische Korrelate von exekutiver Kontrolle im alternden Gehirn
Overhage, Sina; Eickhoff, Simon; Jockwitz, Christiane et al

Poster (2017)

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See detailLists of Gifts in the Mamluk Diplomatic Tradition
Bauden, Frédéric ULg

in Bauden, Frédéric (Ed.) Culture matérielle et contacts diplomatiques entre l’Occident latin, Byzance et l’Orient islamique (XIe-XVIe siècle) (2017)

Detailed reference viewed: 36 (4 ULg)
See detailIncidence of MAGED2 on cell cycle after a camptothecin treatment
Trussart, Charlotte ULg; Pirlot, Céline; Piette, Jacques ULg et al

Poster (2017)

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See detailA surprising and dramatic neuroendocrine-immune phenotype of mice deficient in Growth Hormone-Releasing Hormone (GHRH)
Farhat, Khalil; Bodart, Gwennaelle; Martens, Henri ULg et al

in Neuroimmunomodulation (2017)

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See detailDiplomatie sur le terrain : la première mission diplomatique florentine en territoire mamelouk.
Rizzo, Alessandro ULg

in Culture matérielle et contacts diplomatiques entre l’Occident latin, Byzance et l’Orient islamique (XIe-XVIe siècle). (2017)

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See detailImportance of parenteral nutrition in feeding the premature infant
SENTERRE, Thibault ULg

in International Conference for Advancing Nutrition - Neonatology, Brussels (2017)

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See detailCould Piano key weirs be subject to nappe oscillations?
Lodomez, Maurine ULg; Pirotton, Michel ULg; Dewals, Benjamin ULg et al

in 3rd International Workshop on Labyrinth and Piano Key Weirs - PKW 2017 (2017)

Nappe oscillation may affect a variety of free overflow hydraulic structures operating at low heads such as crest gates and various types of weirs. This phenomenon produces oscillations in the thin nappe ... [more ▼]

Nappe oscillation may affect a variety of free overflow hydraulic structures operating at low heads such as crest gates and various types of weirs. This phenomenon produces oscillations in the thin nappe cascading downstream of the control structure. These oscillations can result in a high noise levels that may affect people and structures located nearby. With long linear and thin overtopping walls, piano key weirs might be subject to strong nappe oscillation risks, as a few documented cases with labyrinth weirs. However, the specific geometric features of piano key weirs, such as the outlet ramps or the limited width of the inlet apex, could perhaps prevent the development of nappe oscillation. In this paper, a prototype-scale linear weir is operated to assess the risk of nappe oscillations on a piano key weir like configuration (sidewall). In particular, the effect of the weir width and inclined apron is analyzed. The experimental results show that nappe oscillation development should not occur on piano key weir, contrary to what might be observed on a labyrinth weir with the same crest. [less ▲]

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See detailDurabilité du maraîchage urbain : entre ancrage territorial et trajectoires de mise en œuvre
Plateau, Lou; Maughan, Noémie; Visser, Marjolein et al

Conference (2017)

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

Conference (2017)

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See detailNitrous oxide dynamic in sea ice
Kotovitch, Marie ULg; Fripiat, François ULg; Deman, Florian et al

Poster (2017)

Fluctuations in greenhouse gases (GHGs) concentration alter the energetic budget of the climate system. There is high confidence that natural systems related to snow, ice and frozen ground are affected ... [more ▼]

Fluctuations in greenhouse gases (GHGs) concentration alter the energetic budget of the climate system. There is high confidence that natural systems related to snow, ice and frozen ground are affected. Nitrous oxide (N2O) is one of the potent GHG naturally present in the atmosphere, but witch has seen his concentration growing since industrial era. N2O has a lifetime in the atmosphere of 114 years and a global warming potential 300 time higher than that of CO2. Yet, there are still large uncertainties and gaps in the understanding of the cycle of this compound through the ocean and particularly in sea ice. Sources and sinks of N2O are therefore still poorly quantified. The main processes (except the transport processes) involved in the N2O cycle within the aquatic environment are nitrification and denitrification. To date, only one study by Randall et al. 2012 present N2O measurements in sea ice. Randall et al. pointed out that sea ice formation and melt has the potential to generate sea-air or air-sea fluxes of N2O, respectively. Study on ammonium oxidation and anaerobic bacterial cultures shows that N2O production can potentially occur in sea ice. Denitrification can act as a sink or a source of N2O. In strictly anaerobic conditions, N2O is removed by denitrification. However, denitrification can also occur in presence of O2 at trace level concentrations (<0.2 mg L-1), and in these conditions there is a large N2O production. Recent observations of significant nitrification in Antarctic sea ice shed a new light on nitrogen cycle within sea ice. It has been suggested that nitrification supplies up to 70% of nitrate assimilated within Antarctic spring sea ice. Corollary, production of N2O, a by-product of nitrification, can potentially be significant. This was recently confirmed in Antarctic land fast ice in McMurdo Sound, where N2O release to the atmosphere was estimated to 4 µmol.m-2.yr-1. This assessment is probably an underestimate since it only accounts for dissolved N2O while a significant amount of N2O is likely to occur in the gaseous form like N2, O2 and Ar. This poster address the issue related to the production of N2O within sympagic microorganisms. What process is dominant and how much N2O is produced? The determination of the isotopic composition of N2O using cavity enhanced laser absorption spectroscopy technique (Off-axis ICOS) will allow us to determine the origin of these processes. It will be based on the relative isotope abundance values and site preference data in previous studies. [less ▲]

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See detailÉtude de la spécificité d’épreuves langagières chez des enfants présentant une dyspraxie verbale (DV) vs un trouble phonologique (TP)
Masson, Pauline ULg; Martinez Perez, Trecy ULg

Poster (2017)

Malgré une augmentation de la recherche sur la dyspraxie verbale, l’évaluation de ce trouble langagier reste problématique. La littérature propose une variété de critères pour le diagnostic de la ... [more ▼]

Malgré une augmentation de la recherche sur la dyspraxie verbale, l’évaluation de ce trouble langagier reste problématique. La littérature propose une variété de critères pour le diagnostic de la dyspraxie verbale, cependant la majorité des caractéristiques cliniques sont également partagées avec les troubles phonologiques (Davis & Velleman, 2000 ; Murray et al., 2015). L’objectif de cette recherche est de déterminer des épreuves qui permettent de différencier une dyspraxie verbale et un trouble phonologique. Nous avons exploré les marqueurs les plus couramment utilisés dans la littérature : l’imprécision des productions phonologiques et l’intelligibilité réduite (Aziz et al., 2010), l’inconstance des erreurs (Forrest, 2003 ; Tubul-Lavy, 2012), la prosodie inappropriée (Shriberg et al., 2003) et la lenteur d’articulation (Shriberg, 2013). Nous avons récolté des données auprès de deux groupes d’enfants francophones présentant une dyspraxie verbale (N=12) ou un trouble phonologique (N=12). Nos deux groupes sont appariés sur le score du QI non verbal, le niveau de compréhension orale et le niveau socio-économique. Les résultats de cette recherche mettent en évidence quatre mesures dont les valeurs de sensibilité/spécificité sont entre acceptables (>80%) et bonnes (>90%) : les pourcentages de réponses correctes et de consonnes correctes à une épreuve de dénomination d'images ; la stabilité des productions dans une épreuve de récit sur images (mots présentés à trois reprises) ; et la vitesse d’articulation pour la série diadocosinésique /pataka/. Pour ces quatre mesures, les résultats montrent que la dyspraxie verbale et le trouble phonologique se situent sur un continuum de sévérité (la dyspraxie verbale entrainant des manifestations plus sévères que le trouble phonologique). Ces résultats seront discutés lors de la session poster. [less ▲]

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See detailInfluence of hydrophobic treatments applications on the concrete carbonation delay
Courard, Luc ULg

in De Schutter, Geert (Ed.) Proceedings RILEM PRO 107 (2017)

Water-repellents are increasingly used in the recent years. Those ones are generally used to reduce the degradation caused by freeze / thaw, by alkali-aggregates reaction or by chloride ions. The ... [more ▼]

Water-repellents are increasingly used in the recent years. Those ones are generally used to reduce the degradation caused by freeze / thaw, by alkali-aggregates reaction or by chloride ions. The objective of this study is to determine if hydrophobic treatments also have an influence on the propagation of the carbonation front into the concrete. Capillary absorption tests, permeability to water-vapor and oxygen, FTIR, DSC and porosity were carried out on concrete samples. Six products with different concentrations, solvent and molecules were tested. The results showed that the application of a water-repellent delays the propagation of the carbonation front. The most efficient products were the silanes which presented a higher penetration depth. Concrete compactness and porosity played also an important role in silane penetration depth. [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), 2(2), 149-158

Detailed reference viewed: 18 (7 ULg)
See detailLes « Annonciades » à Namur : première comparaison architecturale des « Rouges » et des « Célestes » installées au sein d’une même cité
Piront, Julie ULg

in Actes du 9e Congrès de l'Association des Cercles francophones d'Histoire et d'Archéologie de Belgique (2017)

En 1502, les Annonciades sont fondées en France par Jeanne de Valois, épouse répudiée du roi de France, Louis XII. La règle franciscaine dicte le mode de vie de ces religieuses. Elles sont vêtues d’un ... [more ▼]

En 1502, les Annonciades sont fondées en France par Jeanne de Valois, épouse répudiée du roi de France, Louis XII. La règle franciscaine dicte le mode de vie de ces religieuses. Elles sont vêtues d’un scapulaire rouge enfilé sur une robe grise, avec une voile noir. Un couvent de ces Annonciades de France, dites « rouges », est fondé à Namur en 1623. Cent ans plus tard, l’ordre des Annonciades célestes apparaît en 1602 en Italie, créé par Vittoria Fornari, dame de la petite noblesse génoise. Puisant ses préceptes dans la règle de saint Augustin, il est alors connu sous le nom de « l’ordine della Santissima Annunziata » (en français, « l’ordre de la Très Sainte Annonciade »). Ces religieuses sont identifiables par la couleur de leur costume : un scapulaire et un manteau « bleu céleste », portés sur une robe blanche et un voile noir. L’ordre gagne rapidement la France puis la Belgique. Un couvent est établi à Namur en 1631. Ces deux communautés revendiquaient donc le nom d’« Annonciades » et se côtoyèrent parfois dans une même ville. Ce fut le cas à Namur où elles s’établirent toutes les deux en moins d’une décennie. Ces circonstances offrent des dénominateurs communs pour permettre une comparaison architecturale inédite de ces deux établissements. Si le couvent des Annonciades célestes demeure partiellement conservé, celui des Annonciades rouges a disparu. Néanmoins, les sources archivistiques et iconographiques permettront de documenter l’analyse du plan de ces deux édifices ainsi que des matériaux de construction. Si le lieu d’implantation de ces bâtiments influencera probablement les techniques de construction, les différences entre les deux règles surgiront peut-être dans le plan de l’édifice. [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 detailPreliminary assessment of the possibilities of the Particle Finite Element Method in the numerical simulation of bird impact on aeronautical structures
Cerquaglia, Marco Lucio ULg; Deliège, Geoffrey ULg; Boman, Romain ULg et al

in Procedia Engineering (2017), 173

As well known, in the analysis of bird impact events the bird is often reduced, even experimentally, to a surrogate projectile modeled as a weakly compressible fluid (typically a mixture of water and air ... [more ▼]

As well known, in the analysis of bird impact events the bird is often reduced, even experimentally, to a surrogate projectile modeled as a weakly compressible fluid (typically a mixture of water and air). From a numerical standpoint, the presence of a free surface and the strong interaction with the aircraft structures represent a limit for traditional computational fluid dynamics methods based on an Eulerian grid. On the other hand, classical Lagrangian methods cannot cope with the extremely large deformations experienced by the projectile during the impact. The Particle Finite Element Method (PFEM) is a Lagrangian particle method that can account for very large deformations, preserving the robustness and generality of the finite element method, and thus owning a key advantage over other approaches, e.g. Smoothed Particle Hydrodynamics (SPH), usually cursed with consistency and stability issues. To assess the possibilities of the method in the context of bird impact, theoretical analyses are initially performed based on the impact of a water jet on a rigid surface. Then, the influence of the geometry of a more realistic projectile is analyzed and the capability of the method to take into account separation and fragmentation is highlighted. [less ▲]

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See detailFrançois Ier et les arts du Nord (1515-1547). Des liens à explorer et à appronfondir encore
Fagnart, Laure ULg; Lecocq, Isabelle

in Fagnart, Laure; Lecocq, Isabelle (Eds.) François Ier et les arts du Nord (1515-1547) (2017)

Detailed reference viewed: 28 (3 ULg)
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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)

Detailed reference viewed: 14 (0 ULg)
See detailRewiring of porcine mRNA and miRNA networks in response to selection of residual feed intake
Beiki, Hamid; Schroyen, Martine ULg; Rakshandeh, Anoosh et al

Poster (2017)

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See detailTime course of familiarity and novelty decisions in aging
Delhaye, Emma ULg; Bastin, Christine ULg; Moulin, Christopher et al

Conference (2017)

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See detailAgent-based analysis of dynamic access ranges to the distribution network
Mathieu, Sébastien ULg; Ernst, Damien ULg; Cornélusse, Bertrand ULg

in Proceedings of the 6th European Innovative Smart Grid Technologies (ISGT) (2017)

There is a need to clearly state an interaction model that formalizes interactions between actors of the distribution system exchanging flexibility. In previous works we quantitatively evaluated the ... [more ▼]

There is a need to clearly state an interaction model that formalizes interactions between actors of the distribution system exchanging flexibility. In previous works we quantitatively evaluated the performance of five interaction models devised with industrial partners using the agent-based testbed DSIMA. Simulation results showed that these interaction models relying on active network management suffer from a lack of coordination between the distribution and the transmission system operator, activating flexibility simultaneously in opposite directions. This paper introduces a new interaction model fixing this issue based on dynamic access bounds to the network changing throughout the day and preventing the activation of flexibility leading to congestions. This new interaction model is implemented in DSIMA and compared to a model restricting the grid users to a very restrictive but safe access range. Results show that this new model allows to safely increase by 55% the amount of distributed generation in the network. [less ▲]

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See detailIMPACT OF IMAGE BRIGHTNESS REDUCTION ON PERCEIVED QUALITY OF 3D EXPERIENCE FOR 3D CINEMA SPECTATORS
Loock, Severin; Grogna, David ULg; Jaspar, Mathieu ULg et al

in International Conference on 3D Imaging (IC3D) (2017)

3D movies are calibrated to meet a certain screen bright- ness standard. Therefore, what would be the consequences on the quality of the 3D experience for spectators watching a 3D movie when movie ... [more ▼]

3D movies are calibrated to meet a certain screen bright- ness standard. Therefore, what would be the consequences on the quality of the 3D experience for spectators watching a 3D movie when movie theaters do not respect this standard? First, we attempted to better understand which factors were important for a spectator by conducting an experiment where participants watched a 3D movie and filled out an exploratory questionnaire. Then, we aimed to investigate the link between image brightness loss and the quality of the 3D experience as perceived by the spectator. First results show no perceived difference in the quality of the 3D experience between a nor- mal brightness and a brightness decreased by 10% for four factors, i.e. (1) the appreciation of the movie, (2) the con- tent of the movie, (3) the 3D quality of the movie, and (4) the quality of the 3D experience in general. [less ▲]

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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 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 detailThiamine: Biological forms and function
Bettendorff, Lucien ULg

Conference (2017)

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See detailLA MESURE DE RELIQUAT AZOTÉ DANS LE SOL EN DÉBUT DE PÉRIODE DE LIXIVIATION (APL) : méthodologie et bilan après 12 années de contrôle des exploitations agricoles en Belgique (région wallonne)
Vandenberghe, Christophe ULg; Colinet, Gilles ULg; Khalidi, Mostafa et al

in Pin, Dominique; Thibault, Olivier (Eds.) DES TERRITOIRES À L’EUROPE : Construire ensemble les transitions environnementales (2017)

In 1991, the European Union enacted a “Nitrates” directive that each member state has had to translate into an action plan in its territory. One of the tools the Walloon region uses to control the ... [more ▼]

In 1991, the European Union enacted a “Nitrates” directive that each member state has had to translate into an action plan in its territory. One of the tools the Walloon region uses to control the implementation of this action programme is the measure of residual nitrogen in the soil at the beginning of the nitrate leaching period (Nitrogen Leaching Potential). From 2004 to 2007, this tool was used in a hundred-odd farms that had voluntarily requested an exemption from the maximum amount of spreadable farmyard manure. Since 2008, it can be used by the Walloon Administration in any farm located in a vulnerable area. [less ▲]

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