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See detailLong-wave infrared digital holographic interferometry for deformation measurement of the segmented detector array of the space EUCLID mission
Vandenrijt, Jean-François ULg; Thizy, Cédric ULg; Beaumont, Florent et al

in Digital Holography and Three-Dimensional Imaging (2015, May)

Digital holographic interferometry in LWIR is used for following the deformation and relative movement of an assembly of detectors to be used in space. The setup is incorporated in a vacuum chamber for ... [more ▼]

Digital holographic interferometry in LWIR is used for following the deformation and relative movement of an assembly of detectors to be used in space. The setup is incorporated in a vacuum chamber for cryogenic testing. [less ▲]

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See detailAdapting Nitrogen management to the increasing climatic uncertainty
Dumont, Benjamin ULg; Basso, Bruno; Bodson, Bernard ULg et al

in Shirmohammadi, Adel; Bosch, David; Muñoz-Carpena, Rafa (Eds.) Proceedings of the 1st ASABE Climate Change Symposium - Adaptation and Mitigation (2015, May)

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See detailInvestigation of diaphragm deflection of an absolute MEMS capacitive polysilicon pressure sensor
Walk, C; Goehlich, A; Giese, A et al

in Proc. SPIE Microtechnologies, Smart Sensors, Actuators, and MEMS VII (2015, May)

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See detailSimulations lagrangienne et arbitraire lagrangienne eulérienne du procédé de profilage
Crutzen, Yanick ULg; Boman, Romain ULg; Papeleux, Luc ULg et al

in Actes du 12e Colloque National en Calcul des Structures (2015, May)

L’application du formalisme Arbitraire Lagrangien Eulérien (ALE) à la simulation numérique du procédé de profilage permet de calculer l’état espéré stationnaire du procédé de type continu en modélisant de ... [more ▼]

L’application du formalisme Arbitraire Lagrangien Eulérien (ALE) à la simulation numérique du procédé de profilage permet de calculer l’état espéré stationnaire du procédé de type continu en modélisant de manière efficace l’intégralité de la ligne grâce à un maillage quasi-Eulérien. Ce type de simulation sera comparé à l’approche classique en formalisme Lagrangien dans le cadre d’une application industrielle de profilage. Les performances de la parallélisation de l’algorithme ALE seront analysées dans l’état actuel des développements du code de calcul METAFOR. [less ▲]

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See detailMolecular analysis of miRNA expression profiles in AIP mutation positive somatotropinomas
Falk, N; Daly, Adrian ULg; Beckers, Albert ULg et al

in Endocrine Abstracts (2015, May)

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See detailPancreatitis in familial hypocalciuric hypercalcaemia
Potorac, Iulia ULg; MALAISE, Olivier ULg; Daly, Adrian ULg et al

in Endocrine Abstracts (2015, May)

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See detailDetermination of Stress and Strain Fields in Cast and Heat Treated Bimetallic Rolling Mill Rolls
Neira Torres, Ingrid; Tchuindjang, Jérôme Tchoufack ULg; Sinnaeve, Mario et al

in Proceedings of the Iron & Steel Technology Conference and Exposition (AISTech 2015 & ICSTI) (2015, May)

Efficient work rolls for Hot Strip mill roughing stands are usually produced as bimetallic spun cast rolls with a core material made of Spheroidal Graphite Iron (SGI) and a shell material made of High ... [more ▼]

Efficient work rolls for Hot Strip mill roughing stands are usually produced as bimetallic spun cast rolls with a core material made of Spheroidal Graphite Iron (SGI) and a shell material made of High Chromium Steel alloy, semi-High speed steel or adapted High Speed steel chemistry. In this paper, the evolution of stress fields and microstructure during post casting cooling and subsequent heat treatment of a standard high chromium steel is targeted. This knowledge is a first step to analyze the different events that could happen during these production stages and provides the residual stress fields as well as the final roll microstructure which are interesting data for roll service life. As far as roughing mill work rolls for roughing mills are concerned, current trends in terms of work roll design are forcing the roll producer to go towards higher usable shell thicknesses or increased residual shell thickness after scrap diameter in order to delay potential fatigue phenomena at the shell-core interface. One important parameter could not be evaluated in this study, it concerns the pollutions of the core material by alloying elements of the shell during production, which could affect to some extent the mechanical properties and microstructure of the core. The macroscopic thermo-mechanical-metallurgical Finite Element model used to perform simulations, takes into account coupled effects. Input data parameters are identified by experimental tests such as compression tests at constant strain rate and numerical procedures such as inverse method. After the model presentation, the material data set is commented. Whole experimental campaign could not be presented, however interested readers are referred to [1] where more details on the material study of High Chromium Steel alloy can be found. The section of simulation results show the phase transformation histories and stress profiles of a typical roll of diameter 1.2 m and shell thickness of 0.08 m. An additional sensitivity analysis of the results to some material data such as induced plasticity transformation coefficient and shift of the martensitic transformation start temperature parameters is reported. Finally, some conclusions analyze the interest and drawbacks of the described model and its results. [less ▲]

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See detailX-linked acro-gigantism (X-LAG) : A new form of infant-onset pituitary gigantism
Trivellin, G; Daly, Adrian ULg; Faucz, FR et al

in Endocrine Abstracts (2015, May)

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See detailModelling of stress field evolution in bimetallic rolling mill rolls during the manufacturing process
Gilles, G.; Neira Torres, I.; Tchuindjang, Jérôme Tchoufack ULg et al

in Proceedings of the 5th Conference on rolling mill rolls for metals processing Rolls 5 2015 (2015, April 22)

This paper presents a study of the phase transformation histories and stress profiles in a typical bimetallic roll subjected to a post-casting cooling followed by a tempering heat treatment. The ... [more ▼]

This paper presents a study of the phase transformation histories and stress profiles in a typical bimetallic roll subjected to a post-casting cooling followed by a tempering heat treatment. The simulations are performed using the non-linear finite element code "Lagamine" and a thermo-mechanical-metallurgical model able to take into account coupled effects. The sensitivity of the finite element results to some parameters which are not accurately identified is investigated. [less ▲]

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See detailLes documents administratifs du recto du P.Vat. Gr. 11
Ricciardetto, Antonio ULg

in Amato, Eugenio; Marganne, Marie-Hélène (Eds.) Le traité "Sur l'exil" de Favorinos d'Arles. Papyrologie, philologie et littérature (2015, April 17)

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See detailUse of NIR-HIS and dichotomist classification tree based on SVMDA models in order to discriminate roots and crop residues of winter wheat
Eylenbosch, Damien ULg; Fernández Pierna, Juan Antonio; Baeten, Vincent et al

in EARSeL 2015: 9th EARSeL SIG Imaging Spectroscopy workshop, Luxembourg 14-16 April 2015 (2015, April 14)

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See detailTracking Middleboxes in the Mobile World with TraceboxAndroid
Thirion, Valentin; Edeline, Korian ULg; Donnet, Benoît ULg

in 7th International Workshop on Traffic Monitoring and Analysis (TMA) (2015, April)

Middleboxes are largely deployed over cellular networks. It is known that they might disrupt network performance, expose users to security issues, and harm protocols deployability. Further, hardly any ... [more ▼]

Middleboxes are largely deployed over cellular networks. It is known that they might disrupt network performance, expose users to security issues, and harm protocols deployability. Further, hardly any network measurements tools for smartphones are able to infer middlebox behaviors, specially if one cannot control both ends of a path. In this paper, we present TraceboxAndroid a proof-of-concept measurement application for Android mobile devices implementing the tracebox algorithm. It aims at diagnosing middlebox-impaired paths by detecting and locating rewriting middleboxes. We analyze a dataset sample to highlight the range of opportunities offered by TraceboxAndroid. We show that TraceboxAndroid can be useful for mobile users as well as for the research community. [less ▲]

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See detailScreening for GBS colonization: Old and new tools
MELIN, Pierrette ULg

in Program and abstract book DIP 2015 (2015, April)

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See detailSeismic hazard assessment of the Kivu rift segment based on a new sismo-tectonic zonation model (Western Branch of the East African Rift system)
Havenith, Hans-Balder ULg; Delvaux, Damien

in EGU General Assembly Conference Abstracts (2015, April)

In the frame of the Belgian GeoRisCA multi-risk assessment project focused on the Kivu and Northern Tanganyika Region, a seismic hazard map has been produced for this area. It is based on a on a recently ... [more ▼]

In the frame of the Belgian GeoRisCA multi-risk assessment project focused on the Kivu and Northern Tanganyika Region, a seismic hazard map has been produced for this area. It is based on a on a recently re-compiled catalogue using various local and global earthquake catalogues. The use of macroseismic epicenters determined from felt earthquakes allowed to extend the time-range back to the beginning of the 20th century, thus spanning about 100 years. The magnitudes have been homogenized to Mw and the coherence of the catalogue has been checked and validated. The seismo-tectonic zonation includes 10 seismic source areas that have been defined on the basis of the regional geological structure, neotectonic fault systems, basin architecture and distribution of earthquake epicenters... [less ▲]

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See detailL’auteur de la Passio sanctae Salsae a-t-il aussi écrit la Passio sancti Fabii ?
Fialon, Sabine ULg

in Meyers, Jean; Fialon, Sabine (Eds.) La Passio sanctae Salsae. Recherches sur une passion tardive d’Afrique du Nord. Avec une nouvelle édition critique d’A. M. Piredda et une traduction annotée du G.R.A.A. (2015, April)

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See detailLe dossier papyrologique de Favorinos d'Arles
Marganne, Marie-Hélène ULg

in Amato, Eugenio; Marganne, Marie-Hélène (Eds.) Le traité Sur l'exil de Favorinos d'Arles. Papyrologie, philologie et littérature (2015, April)

La mise en série et la comparaison des trois papyrus littéraires grecs en relation avec Favorinos révèlent maints points communs : même datation au IIIe siècle, même utilisation d'un support d'écriture de ... [more ▼]

La mise en série et la comparaison des trois papyrus littéraires grecs en relation avec Favorinos révèlent maints points communs : même datation au IIIe siècle, même utilisation d'un support d'écriture de réemploi, même type d'écriture, informelle ou cursive, et même contexte de production ou d'utilisation. Provenant, l’un, de la Marmarique, et un autre, sûrement, d'Oxyrhynchus, ils attestent la connaissance de l'auteur arlésien (c. 80-150/160), dans la chôra égyptienne au sens large, moins d'un siècle après sa mort, probablement dans le cadre particulier des intérêts liés à la rhétorique et à son enseignement ou son apprentissage ou sa pratique. [less ▲]

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See detailTowards a Middlebox Policy Taxonomy: Path Impairments
Edeline, Korian ULg; Donnet, Benoît ULg

in International Workshop on Network Science for Communication Networks (NetSciCom): Hong Kong April 27 2015 (2015, April)

Recent years have seen the rise of middleboxes, such as firewalls, NATs, proxies, or Deep Packet Inspectors. Those middleboxes play an important role in today's Internet, including enterprise networks and ... [more ▼]

Recent years have seen the rise of middleboxes, such as firewalls, NATs, proxies, or Deep Packet Inspectors. Those middleboxes play an important role in today's Internet, including enterprise networks and cellular networks. However, despite their huge success in modern network architecture, they have a negative impact on the Internet evolution as they can slow down the TCP protocol evolution and its extensions. Making available a summary of the potential middlebox network interferences is of the highest importance as it could allow researchers to confront their new transport protocol to potential issues caused by middleboxes. And, consequently, allowing again innovation in the Internet. This is exactly what we tackle in this paper. We propose a path impairment oriented middlebox taxonomy that aims at categorizing the initial purpose of a middlebox policy as well as its potential unexpected complications. Based on a measurement campaign on IPv4 and IPv6 networks, we confront our taxonomy to the real world. Our dataset is freely available. [less ▲]

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See detailFavorinos d'Arles et ses contemporains : bilinguisme et biculturalisme au IIe siècle apr. J.-C.
Rochette, Bruno ULg

in Marganne, Marie-Hélène; Amato, Eugenio (Eds.) Le traité sur l'exilde Favorinos d'Arles. Papyrologie, Philologie et littérature (2015, April)

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See detailFormulations of the bed slope term in the shallow water equations: implication for energy balance
Bruwier, Martin ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Workshop on Advances in Numerical Modelling of Hydrodynamics (2015, March 24)

For an incompressible, isothermal, continuous and frictionless flow, the exact resolution of the equation of conservation of mechanical energy is equivalent to the exact resolution of the equation of ... [more ▼]

For an incompressible, isothermal, continuous and frictionless flow, the exact resolution of the equation of conservation of mechanical energy is equivalent to the exact resolution of the equation of momentum conservation. However, the discrete solution of the equation of momentum conservation does not verify the equation of energy conservation. This is particularly the case as a result of the presence of a non-conservative bed slope term in the equation of momentum conservation. In this research, the influence of (i) the formulation and (ii) the discretization scheme of the non-conservative bed slope term on the energy conservation is analysed in the case of a 1D horizontal and frictionless channel with a topographic step. The results for two different formulations of the bed slope term are firstly compared: the standard formulation of the bed slope source term and a divergence formulation of the bed slope term. Then, different discretization schemes of the divergence formulation of the bed slope term are analyzed to determine the one minimizing the numerical variation of energy. [less ▲]

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See detailHighly Luminescent Aqueous Ag2S Quantum Dots as New Generation Quantum Dots
Yağcı Acar, Havva Funda; Hocaoğlu, I.; Demir, F. et al

in Proceediing of the meeting (2015, March 09)

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See detailLe "champ" de l'accompagnement des demandeurs d'emploi est-il un "marché" ?
Remy, Céline ULg

in Galabov, Antoniy; Rouet, Gilles (Eds.) Services publics, entreprises publiques : quelle place pour les citoyens? (2015, March 01)

Le but de ce chapitre est d’interroger le champ de l’accompagnement des demandeurs d’emploi comme étant ou non un marché conventionnel. Pour ce faire, les concepts de marché, de quasi-marché, de marché ... [more ▼]

Le but de ce chapitre est d’interroger le champ de l’accompagnement des demandeurs d’emploi comme étant ou non un marché conventionnel. Pour ce faire, les concepts de marché, de quasi-marché, de marché public et de champ sont clarifiés dans un premier temps. Pour comprendre le fonctionnement du marché de l’accompagnement, il est nécessaire dans un deuxième temps d’examiner quatre dimensions qui sont le périmètre et le financement de celui-ci mais également la sélection des opérateurs externes par les services publics de l’emploi et les stratégies développées par les différents acteurs appartenant à ce marché. L’étude de ces dimensions qui s’appuie sur trois études de cas permet de montrer la singularité du marché de l’accompagnement. [less ▲]

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See detailSpS5 - III. Matter ejection and feedback
Nazé, Yaël ULg; Che, Xiao; Cox, Nick L. J. et al

in Highlights of Astronomy, vol 16 (2015, March 01)

The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs and LBVs. As shown in ... [more ▼]

The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs and LBVs. As shown in the last years, the potential of IR for their study is twofold: first, IR can help discover many previously unknown nebulae, leading to the identification of new massive stars as their progenitors; second, IR can help characterize the nebular features. Current and new IR facilities thus pave the way to a better understanding of the feedback from massive stars. [less ▲]

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See detailSplit-Band Interferometric SAR Processing Using TanDEM-X Data
De Rauw, Dominique ULg; Kervyn, François; d'Oreye, Nicolas et al

in ESA SP-731 (2015, March)

Most recent SAR sensors use wide band signals to achieve metric range resolution. One can also take advantage of wide band to split it into sub-bands and generate several lower-resolution images, centered ... [more ▼]

Most recent SAR sensors use wide band signals to achieve metric range resolution. One can also take advantage of wide band to split it into sub-bands and generate several lower-resolution images, centered on slightly different frequencies, from a single acquisition. This process, named Multi Chromatic Analysis (MCA) corresponds to performing a spectral analysis of SAR images. Split-Band SAR interferometry (SBInSAR) is based on spectral analysis performed on each image of an InSAR pair, yielding a stack of sub-band interferograms. Scatterers keeping a coherent behaviour in each sub-band interferogram show a phase that varies linearly with the carrier frequency, the slope being proportional to the absolute optical path difference. This potentially solves the problems of phase unwrapping on a pixel-per-pixel basis. In this paper, we present an SBInSAR processor and its application using TanDEM-X data over the Nyiragongo volcano. [less ▲]

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See detailNumerical crashworthiness analysis of an offshore wind turbine monopile impacted by a ship
Bela, Andreea ULg; Le Sourne, Hervé; Buldgen, Loïc ULg et al

in Shenoi, R Ajit; Soares, Carlos Guedes (Eds.) Analysis and Design of Marine Structures (2015, March)

The consequences of collision events can range from minor structural damages of the supporting structure to complete collapse of the wind turbine, which may lead to disruptions of the electricity ... [more ▼]

The consequences of collision events can range from minor structural damages of the supporting structure to complete collapse of the wind turbine, which may lead to disruptions of the electricity production and, at worst, to sinking of the striking ship with probability of loss of human lives or/and pollution. For all these reasons, a collision risk analysis becomes mandatory at the pre-design stage in order to identify the collision scenarios having the greatest probabilities of occurrence, to estimate the consequences of collision events and to ensure safe operations through the wind farm service life. The goal of this paper is to outline the behavior of the monopile foundations during ship collision by performing non-linear finite element simulations. Many collision scenarios are analyzed in order to study the sensitivity of the monopile to various parameters like impact striking ship velocity, nacelle mass, wind direction, soil stiffness, vertical location of the impact point, wind orientation … The internal energy dissipated by deformation of the monopile, the crushing force and the indentation of the crushed area are compared for different situations, as well as the overall displacements of the supporting structure. [less ▲]

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See detailCongenital gigantism in a girl with anterior pituitary hyperplasia : a new genes for a new disease
Lysy, PA; Daly, Adrian ULg; Brunelle, C et al

in Abstract book - 43ème Congrès Annuel de la Société Belge de Pédiatrie (2015, March)

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See detailAIP mutations : who should we screen ?
Beckers, Albert ULg

in Abstract book - 14th International Pituitary Congress (2015, March)

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See detail(In)sécurités linguistiques francophones en Belgique : du taux d’insécurité aux facteurs d’(in)sécurité
Dassargues, Alix ULg

in L'insécurité en question : défis, enjeux et perspectives (2015, March)

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See detailL'optimisation topologique et la fabrication additive, amélioration de la chaine de conception
Louvigny, Yannick ULg; Nzisabira, Jonathan ULg; Meunier, Bertrand et al

in 14ème colloque national AIP PRIMECA : Produits, Procédés, Systèmes intelligents et durables (2015, March)

L'intérêt de combiner l'optimisation topologique avec les méthodes de fabrication additive vient du fait que d'une part, l'optimisation topologique permet de générer des géométries complexes que les ... [more ▼]

L'intérêt de combiner l'optimisation topologique avec les méthodes de fabrication additive vient du fait que d'une part, l'optimisation topologique permet de générer des géométries complexes que les procédés d'usinage conventionnels ne sont pas capables de réaliser et que, d'autre part, la fabrication additive permet de réaliser des formes complexes telles que des cavités emprisonnées dans un volume ou des canaux non rectilignes, impossibles à reproduire en fonderie ou par usinage. De plus et contrairement aux techniques traditionnelles, la réalisation des géométries complexes n'influence pas le coût pour les techniques additives. Pour ces techniques, le coût est lié principalement au volume de la pièce. La complexité de la pièce n'est plus un problème mais un atout. Toutefois cette combinaison n'est pas encore exploitable au niveau industriel. En effet, les résultats fournis par l'optimisation topologique doivent être modifiés, souvent manuellement, pour les rendre utilisables par les méthodes de fabrication additive. Et ces modifications coûtent cher. Il est donc intéressant de limiter ou au mieux d'éliminer les étapes manuelles de la chaîne de conception. Ce papier propose une chaîne de conception optimisée pour une pièce devant être fabriquée par les méthodes additives. En outre, la prise en compte des contraintes inhérentes aux procédés de fabrication par addition de matière reste problématique. Une démarche simplifiée est proposée pour identifier les types de contraintes inhérentes aux procédés de fabrication par addition de matière, les quantifier pour certaines techniques et les intégrer dans le code d'optimisation topologique. La nouvelle chaine de conception minimise les interventions du concepteur qui rendent le processus plus lourd et moins viable industriellement. Dans cette nouvelle chaîne de conception, certaines étapes sont réalisées plus rapidement et génèrent de meilleurs résultats. [less ▲]

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See detailX-Linked acro-gigantism (X-LAG) syndrome : a new form of infant-onset pituitary gigantism
Stratakis, CA; Trivellin, G; Rostomyan, Liliya ULg et al

in Abstract book - 14th International Pituitary Congress (2015, March)

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See detailAn orphan GPCR may be mutated in patients with Cushing Disease
Correa, RR; Trivellin, G; Li, Y et al

in Abstract book - ENDO 2015 (2015, March)

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See detailWheat yield sensitivity to climate change across a European transect for a large ensemble of crop models
Pirttioja, N.; Carter, Timothy; Fronzek, S. et al

in Soussana, Jean-Francois (Ed.) Proceedings of the Climate Smart Agriculture 2015 conference (2015, March)

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See detailOptimisation of the Nitrogen fertilisation in the context of climate change
Dumont, Benjamin ULg; Basso, Bruno; Bodson, Bernard ULg et al

in Soussana, Jean-Francois (Ed.) Proceedings of the Climate Smart Agriculture 2015 conference (2015, March)

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See detailX-Linked acro-gigantism (X-LAG) due to microduplications of chromosome Xq26 : A new disorder and implications for acromegaly
Trivellin, G; Daly, AF; Faucz, FR et al

in Abstract book - ENDO 2015 (2015, March)

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See detailDisease characteristics of patients with X-linked acrogigantism (X-LAG) syndrome
Daly, Adrian ULg; Lodish, MB; Trivellin, G et al

in Abstract book - ENDO 2015 (2015, March)

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See detailTree Ensemble Methods for Computer Aided Diagnosis (CAD) Systems : Application to neurodegenerative diseases
Wehenkel, Marie ULg

in Human Brain Project : 2nd HBP Education Workshop : Future Medicine : Medical Intelligence for Brain Diseases : 15th-18th March 2015, CHUV, Lausanne, Switzerland : Abstract Collection Students (2015, March)

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See detailCharacteriation of GPR101 expression across different species
Trivellin, G; Bjelobaba, I; Daly, Adrian ULg et al

in Abstract book - ENDO 2015 (2015, March)

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See detailComparison of early stages of colorectal cancer by label free proteomics
QUESADA CALVO, Florence ULg; MEUWIS, Marie-Alice ULg; Bertrand, Virginie ULg et al

in Acta Gastroenterologica (2015, February 27)

Introduction and objectives: Colorectal cancer (CRC) is the second most frequent cancer in women and the third in men. Identification of the mechanisms of progression in these early CRC stages is ... [more ▼]

Introduction and objectives: Colorectal cancer (CRC) is the second most frequent cancer in women and the third in men. Identification of the mechanisms of progression in these early CRC stages is important to develop new diagnostic and therapeutic tools. Formalin-Fixed Paraffin-Embedded (FFPE) specimens are materials that enable proteomic clinical research. Hence our aim was to address the comparison of FFPE samples from early CRC stages patients using shotgun proteomic analysis. Methods: We performed a retrospective study on 36 CRC tissue samples (pT1N0M0, n=16 and pT2N0M0, n=20) compared together and with 40 control tissue samples (20 patients with diverticulitis, using paired inflamed (DI) and healthy tissue (DH)). Each tissue slice was macrodissected to enrich in epithelial cells. We used FFPE-FASP kit (Expedeon) for sample preparation and protein digests were analyzed using 2D-nanoAquity UPLC separation online with Q-Tof Synapt HDMSTM G2 using ion mobility as additional separation. We performed protein identification and differential analysis using Progenesis QI for proteomics (Nonlinear Dynamics). Results and discussion: We selected 149 proteins differentially distributed between T1 and T2 CRC stages which were not significantly different between CRC and DH or DI. Only 30 proteins were significantly more abundant in T1 versus T2 and 119 were distributed inversely, with a minimum fold ratio of 2. Among those, ATP synthase subunit beta, Aspartate-tRNA ligase, Haptoglobin and Kininogen were identified. . Moreover, we validated Kininogen and 3 others proteins with a significant differential distribution between pT1N0M0 and pT2N0M0 stages by immunohistochemistry. Conclusion: This FFPE retrospective study comparing T1 and T2 CRC highlighted proteins already previously identified as potential CRC biomarkers. These proteins may reflect important early changes in cancer development and may help understanding early tumor progression. [less ▲]

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See detailPotential Proteomic Biomarkers Associated with Mucosal Healing and Relapse Prediction after IFX Withdrawals in Crohn’s Disease
MEUWIS, Marie-Alice ULg; QUESADA CALVO, Florence ULg; Baiwir, Dominique ULg et al

in Acta gastroenterologica (2015, February 26)

Introduction and objectives: In Crohn's disease (CD), there is a discrepancy between clinical activity of the disease (symptoms) and intestinal healing. However absence of tissue healing is associated ... [more ▼]

Introduction and objectives: In Crohn's disease (CD), there is a discrepancy between clinical activity of the disease (symptoms) and intestinal healing. However absence of tissue healing is associated with the risk of relapse and tissue damage progression. Endoscopy is costly and invasive. Hence biomarkers correlating with intestinal healing could improve disease management and potentially decrease the number of endoscopy when patients are in clinical remission. Aim: We aimed to identify potential biomarkers associated to CD mucosal healing and relapse after IFX withdrawals by a shotgun label-free proteomic study. Methods: We used the STORI1 clinical trial cohort (n=103) aiming at identifying markers associated to relapse prediction after Infliximab treatment withdrawals. We used serum samples of patients in clinical remission (at base line). We grouped these according to the degree of intestinal healing seen at endoscopy or according to relapse occurrence during the 28 month follow-up and composed pooled samples. We performed depletion of the 20 most abundant plasma proteins on each serum pools and ran a proteomic label-free differential analysis using 2D-nanoUPLC-MSE HDMS Synapt G2 for data acquisition. We performed different statistical analysis. Moreover, a Gene Ontology annotation was also performed for the potential biomarkers highlighted. Results and Discussion: We identified analysing these depleted serum pools 430 different proteins and 188 proteins common to all samples. Among these, 40 were found with a significant differential abundance in the groups compared. We selected some among the most significant one (ratio>1.3) or being by nature consistent with the context of this study (sample origin and clinical question addressed). For example, the C-reactive protein (CRP) was found with a significant Ratio of 2 between Relapsers and Non Relapsers. The other potential biomarkers associated to mucosal healing or to relapse prediction, were selected for further validation by Western Blot analysis (WB), routine laboratory tests and also by a Mass Spectrometry based technology: multiplexed selected reaction monitoring (SRM). Multiplexed SRM will enable quantitative analysis of these candidates in each individual patient as well as WB tests. Conclusions: This research strategy and the validation results on potential biomarkers associated to mucosal healing or relapse after treatment cessation in this cohort of CD patients, as well as tests done on other CD patients, might provide new opportunities for patient follow-up test developments. The next step is to perform SRM validation on the STORI cohort and design signatures using these potential biomarkers SRM data for prognosis power evaluation. 1. Louis E, Mary JY, Vernier-Massouille G, et al. Maintenance of remission among patients with Crohn's disease on antimetabolite therapy after infliximab therapy is stopped. Gastroenterology 2012;142:63-70 e5; quiz e31. [less ▲]

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See detail2. Implantation des cultures
Eylenbosch, Damien ULg; Meza Morales, Walter ULg; Monfort, Bruno et al

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail10. Perspectives - 1. La Lutte contre les pucerons grâce aux odeurs: développement d'une formulation phéromonale
Fassotte, Bérénice ULg; Vandereycken, Axel ULg; Chevalier Mendes Lopes, Thomas ULg et al

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail4. La fumure azotée
Meza Morales, Walter ULg; Monfort, Bruno; Dumont, Benjamin ULg et al

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail10. Perspectives - 2. Utilisation de l'imagerie hyperspectrale proche infrarouge pour estimer la biomasse racinaire d'une culture de froment
Eylenbosch, Damien ULg; Fernandez Pierna, Juan Antonio; Baeten, Vincent et al

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail6. Lutte intégrée contre les maladies
Bataille, Charlotte; Duvivier, Maxime; Eylenbosch, Damien ULg et al

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail5. Régulateurs de croissance
Henriet, François; Monfort, Bruno; Meza Morales, Walter ULg

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 25)

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See detail7. Lutte intégrée contre les ravageurs.
Chavalle, Sandrine ULg; De Proft, Michel

in Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2015, February 22)

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See detail7. Protection contre les ravageurs - 2.2 Protection contre la cécidomyie orange du blé : détermination du risque, efficacité des insecticides, variétés résistantes
Chavalle, Sandrine ULg; De Proft, Michel

in Watillon, Bernard; Bodson, Bernard (Eds.) Livre Blanc Céréales (2015, February 22)

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See detailLes premiers enseignements de l'enquête auprès des élevages laitiers sur leurs évolutions technico-économiques
Beckers, Yves ULg; Vanwindekens, Frédéric ULg; Wyzen, Benoît et al

in Carrefour des Productions animales, 20ème édition "L'exploitation laitière wallonne de demain : du point de vue des acteurs aux propositions de la reccherche" (2015, February 11)

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See detailIntérêt du signal T2 des adénomes hypophysaires à GH traités par analogues de la somatostatine - premiers résultats de l'étude IRMA#2
Potorac, Iulia ULg; PETROSSIANS, Patrick ULg; Daly, Adrian ULg et al

in Symposium "Perspectives in Endocrinology" - 5ème édition (2015, February 07)

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See detailNouvelle classification des acro-gigantismes
Rostomyan, Liliya ULg; Beckers, Albert ULg

in Symposium "Perspectives in Endocrinology" - 5ème édition (2015, February 07)

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See detailA novel mutation of the luteinizing hormone/choionic gonadotrophin receptor gene leading to Leydig cell hypoplasia type I
Potorac, Iulia ULg; Rivero-Müller, A; Pintiaux, Axelle ULg et al

in Symposium "Perspectives in Endocrinology" - 5ème édition (2015, February 07)

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See detailPassive Flutter Suppression using a Nonlinear Tuned Vibration Absorber
Habib, Giuseppe ULg; Kerschen, Gaëtan ULg

in Proceeding IMAC XXXIII A Conference and Exposition on Structural Dynamics, Orlando 2-5 February 2015 (2015, February 03)

The objective of the present study is to mitigate, or even completely eliminate, the limit cycle oscillations in mechanical systems using a passive nonlinear absorber, termed the nonlinear tuned vibration ... [more ▼]

The objective of the present study is to mitigate, or even completely eliminate, the limit cycle oscillations in mechanical systems using a passive nonlinear absorber, termed the nonlinear tuned vibration absorber (NLTVA). An unconventional aspect of the NLTVA is that the mathematical form of its restoring force is not imposed a priori, as it is the case for most existing nonlinear absorbers. The NLTVA parameters are determined analytically using stability and bifurcation analyses, and the resulting design is validated numerically using the MATCONT software. The proposed developments are illustrated using a Van der Pol-Du ng primary system. [less ▲]

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See detailFrequency support among asynchronous AC systems through VSCs emulating power plants
Papangelis, Lampros ULg; Guillaud, Xavier; Van Cutsem, Thierry ULg

in Proc. 11th IET Conference on AC and DC Power Transmission (2015, February)

This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support ... [more ▼]

This paper proposes a new control scheme for the Voltage Source Converters (VSCs) of a High Voltage Direct Current (HVDC) grid connecting asynchronous AC systems, so that the latter can mutually support their frequencies after a disturbance. The scheme involves no communication between VSCs. It is activated upon detection of a significant frequency deviation, with the possibility to limit the support requested from other AC systems. It relies on an integral control enforcing the frequency droop characteristics (of classical speed governors), in addition to the voltage-droop control of VSCs. The controller is tuned to emulate the response of a power plant, while avoiding excessive transients in the HVDC system, and limiting the impact on the other AC systems. [less ▲]

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See detailRobust impact design of steel and composite building structures
Hoffman, Nadine; Kuhlmann, Ulrike; Demonceau, Jean-François ULg et al

in Proceeding of the IABSE Workshop - Safety, Robustness and Condition Assessments of Structures (2015, February)

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See detailRevision of the Mississippian Lithostrotionidae (Rugosa) from eastern Australian and reassessment of homeomorphy among corals
Denayer, Julien ULg; Webb, Gregory

in Bernercker, Michaela (Ed.) 12th International Symposium on Fossil Cnidaria and Porifera 2015 - Abstract Volume (2015, February)

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See detailInternal Resonance and Stall-Flutter in a Pitch-Flap Wing in the Wind-Tunnel
Verstraelen, Edouard ULg; Kerschen, Gaëtan ULg; Dimitriadis, Grigorios ULg

in Proceedings of the SEM IMAC XXXII (2015, February)

Nonlinear aeroelastic phenomena such as store-induced LCOs, transonic buzz and stall flutter are the burden or modern aircraft: they reduce the performance and can even limit the flight envelope in both ... [more ▼]

Nonlinear aeroelastic phenomena such as store-induced LCOs, transonic buzz and stall flutter are the burden or modern aircraft: they reduce the performance and can even limit the flight envelope in both civil and military cases. Several nonlinear setups were studied experimentally in the last decades by the scientific community but most of them have pitch and plunge degrees of freedom and feature a rigid wing. In this paper, we study a new nonlinear aeroelastic apparatus that features nonlinear pitch and flap degrees of freedom, coupled with a flexible wing. The model is tested experimentally in the wind tunnel to determine its dynamic behaviour. Preliminary observations demonstrate that the system undergoes a supercritical Hopf bifurcation due to the hardening nonlinearity followed by an amplitude jump that is the consequence of either dynamic stall (i.e. stall flutter) or internal resonance (i.e. interaction between the hardening nonlinearity and higher modes). [less ▲]

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See detailRobust impact design of steel and composite building structures: the alternate load path approach
Hoffmann, Nadine; Kuhlmann, Ulrike; Demonceau, Jean-François ULg et al

in Proceeding of the IABSE Workshop - Safety, Robustness and Condition Assessments of Structures (2015, February)

Vulnerability of structures to progressive collapse and mitigation of the effects of local damages are topics widely discussed. The studies worldwide carried out allowed identifying different design ... [more ▼]

Vulnerability of structures to progressive collapse and mitigation of the effects of local damages are topics widely discussed. The studies worldwide carried out allowed identifying different design strategies. However, specific knowledge is still limited and this gap is apparent in codes of practice. A European project focusing on robustness of steel and steel and concrete composite structures regarding the effects of impact recently started combining the 2 methods of residual strength and alternate load path. In the framework of the project activities, the Authors aimed their studies on the redundancy of the structure through slab-beam-systems and ductile joint as well as on the local behaviour of the impacted members. For this analytical, numerical and experimental investigations have been planned and executed. The paper describes the experimental activities related to the investigations on the structural redundancy and presents the preliminary test outcomes. [less ▲]

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See detailCore-shell AgSiO2-Protoporphyrin IX nanoparticle: Effect of the Ag core on reactive oxygen species generation
Lismont, Marjorie ULg; Pàez Martinez, Carlos ULg; Dreesen, Laurent ULg

in SPIE proceeding - Colloidal Nanoparticles for Biomedical Applications X (2015, February)

Photodynamic therapy (PDT) for cancer is based on the use of a light sensitive molecule to produce, under specific irradiation, toxic reactive oxygen species (ROS). A way to improve the therapy efficiency ... [more ▼]

Photodynamic therapy (PDT) for cancer is based on the use of a light sensitive molecule to produce, under specific irradiation, toxic reactive oxygen species (ROS). A way to improve the therapy efficiency is to increase the amount of produced ROS near cancer cells. This aim can be achieved by using a metal enhanced process arising when an optically active molecule is located near a metallic nanoparticle (NP). Here, the coupling effect between silver (Ag) NPs and protoporphyrin IX (PpIX) molecules, a clinically approved photosensitizer, is studied compared first, to PpIX fluorescence yield and second, to ROS production efficiency. By applying a modified Stöber process, PpIX was encapsulated into a silica (SiO2) shell, surrounding a 60 nm sized Ag core. We showed that, compared to SiO2-PpIX NPs, Ag coated SiO2-PpIX NPs dramatically decreased PpIX fluorescence together with singlet oxygen production efficiency. However, after incubation time in the dark, the amount of superoxide anions generated by the Ag doped sample was higher than the control sample one. [less ▲]

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See detailAnalytical procedure to derive P-I diagram of a beam under explosion
Hamra, Lotfi ULg; Demonceau, Jean-François ULg; Denoël, Vincent ULg

in Proceeding of the IABSE Workshop - Safety, Robustness and Condition Assessments of Structures (2015, February)

The aim of this paper is to study a beam extracted from a frame and subjected to blast loading. The demand of ductility depends on six dimensionless parameters: two related to the blast loading, two ... [more ▼]

The aim of this paper is to study a beam extracted from a frame and subjected to blast loading. The demand of ductility depends on six dimensionless parameters: two related to the blast loading, two referring to the bending behaviour of the beam and two corresponding to the dynamic behaviour of the rest of the structure. We develop a full analytical procedure that provides the ductility demand as a function of these six dimensionless parameters. [less ▲]

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See detailExperimental demonstration of a 3D-printed nonlinear tuned vibration absorber
Grappasonni, Chiara ULg; Habib, Giuseppe ULg; Detroux, Thibaut ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIII (2015, February)

Engineering structures are designed to be lighter and more flexible, hence reducing the extent of application of linear dynamic models. Concurrently, vibration mitigation is required for enhancing the ... [more ▼]

Engineering structures are designed to be lighter and more flexible, hence reducing the extent of application of linear dynamic models. Concurrently, vibration mitigation is required for enhancing the performance, comfort or safety in real-life applications. Passive linear vibration absorbers are purpose-built, often designed using Den Hartog's equal-peak strategy. However, nonlinear systems are known to exhibit frequency-energy-dependent oscillations which linear absorbers cannot effectively damp out. In this context, the paper introduces a new nonlinear tuned vibration absorber (NLTVA) whose nonlinear functional form is tailored according to the frequency-energy dependence of the nonlinear primary structure. The NLTVA design aims at ensuring equal peaks in the nonlinear receptance function for an as large as possible range of forcing amplitudes, hence generalizing Den Hartog's method to nonlinear systems. Our focus in this study is on experimental demonstration of the NLTVA performance using a primary structure consisting of a cantilever beam with a geometrically nonlinear component at its free end. The absorber is implemented using a doubly-clamped beam fabricated thanks to 3D printing. The NLTVA performance is also compared with that of the classical linear tuned vibration absorber. [less ▲]

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See detailExperimental modal analysis of nonlinear structures using broadband data
Noël, Jean-Philippe ULg; Renson, Ludovic ULg; Grappasonni, Chiara ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIII (2015, February)

The objective of the present paper is to develop a rigorous identification methodology of nonlinear normal modes (NNMs) of engineering structures. This is achieved by processing experimental measurements ... [more ▼]

The objective of the present paper is to develop a rigorous identification methodology of nonlinear normal modes (NNMs) of engineering structures. This is achieved by processing experimental measurements collected under broadband forcing. The use of such a type of forcing signal allows to excite multiple NNMs simultaneously and, in turn, to save testing time. A two-step methodology integrating nonlinear system identification and numerical continuation of periodic solutions is proposed for the extraction of the individual NNMs from broadband input and output data. It is demonstrated using a numerical cantilever beam possessing a cubic nonlinearity at its free end. The proposed methodology can be viewed as a nonlinear generalization of the phase separation techniques routinely utilized for experimental modal analysis of linear structures. The paper ends with a comparison between this new nonlinear phase separation technique and a previously-developed nonlinear phase resonance method. [less ▲]

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See detailThe Late Viséan Rugose coral association of NW Turkey
Denayer, Julien ULg

in Bernecker, Michaela (Ed.) 12th International Symposium on Fossil Cnidaria and Porifera 2015 - Abstract Volume (2015, February)

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See detailOnset, growth, decline and decease of the Frasnian reefs and carbonate platform in the Frasnian of Belgium
Poty, Edouard ULg; Denayer, Julien ULg; Mottequin, Bernard

in Bernecker, Michaela (Ed.) 12th International Symposium on Fossil Cnidaria and Porifera 2015 - Abstract Volume (2015, February)

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See detailExperimental nonlinear identification of an aircraft with bolted connections
De Filippis, Giovanni; Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIII (2015, February)

Aircraft structures are known to be prone to nonlinear phenomena, especially as they constantly become lighter and hence more flexible. One specific challenge that is regularly encountered is the modeling ... [more ▼]

Aircraft structures are known to be prone to nonlinear phenomena, especially as they constantly become lighter and hence more flexible. One specific challenge that is regularly encountered is the modeling of the mounting interfaces between aircraft subcomponents. Indeed, for large amplitudes of vibration, such interfaces may loosen and, in turn, trigger complex mechanisms such as friction and clearances. In this context, the present work intends to investigate the nonlinear dynamics of the Morane–Saulnier Paris aircraft, accessible at ONERA. This aircraft possesses multiple bolted connections between two external fuel tanks and wing tips. The objective of the paper is specifically to carry out an adequate identification of the numerous nonlinearities affecting the dynamics of this full-scale structure. Nonlinearity detection and the subsequent subspace-based parameter estimation have been performed on experimental data, collected during an on-ground test campaign. Nonlinearity detection is first achieved by the comparison of frequency response functions estimated at low excitation level, with those obtained at high amplitude level, yielding insight towards accurately characterizing the behavior of the bolted connections. Then, a nonlinear subspace identification method is applied to measured data to estimate the linear and nonlinear parameters of the structure and novel strategies and tools that overcome specific arisen problems are developed. [less ▲]

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See detailBridging the gap between Nonlinear Normal Modes and Modal Derivatives
Sombroek, Cees; Renson, Ludovic ULg; Tiso, Paolo et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIII (2015, February)

Nonlinear Normal Modes (NNMs) have a clear conceptual relation to the classical linear normal modes (LNMs), yet they offer a solid theoretical framework for interpreting a wide class of non-linear ... [more ▼]

Nonlinear Normal Modes (NNMs) have a clear conceptual relation to the classical linear normal modes (LNMs), yet they offer a solid theoretical framework for interpreting a wide class of non-linear dynamical phenomena with no linear counterpart. The main difficulty associated with NNMs is that their calculation for large-scale models is expensive, particularly for distributed nonlinearities. Repeated direct time integrations need to be carried out together with extensive sensitivity analysis to reproduce the frequency-energy dependence of the modes of interest. In the present paper, NNMs are computed from a reduced model obtained using a quadratic transformation comprising LNMs and Modal Derivatives (MDs). Previous studies have shown that MDs can capture the essential dynamics of geometrically nonlinear structures and can greatly reduce the computational cost of time integration. A direct comparison with the NNMs computed from another standard reduction technique highlights the capability of the proposed reduction method to capture the essential nonlinear phenomena. The methodology is demonstrated using simple examples with 2 and 4 degrees of freedom. [less ▲]

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See detailRugose corals from the Carboniferous of the eastern Tafilalt (Morocco): a progress report
Aretz, Markus; Denayer, Julien ULg

in Bernecker, Michaela (Ed.) 12th International Symposium on Fossil Cnidaria and Porifera 2015 - Abstract Volume (2015, February)

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See detailAccompagnement individualisé et pratique d’évaluation dans le cadre du master complémentaire Formasup
Jérôme, Françoise ULg; Delfosse, Catherine ULg; Detroz, Pascal ULg et al

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27ème colloque de l ADMEE Europe : l'évaluation à la lumière des contextes et des disciplines (2015, January 30)

Cet article rend compte de la réflexion d’une équipe de formateurs à propos du mode d’évaluation à appliquer aux travaux d’enseignants en formation disposant au départ d’un bagage de compétences ... [more ▼]

Cet article rend compte de la réflexion d’une équipe de formateurs à propos du mode d’évaluation à appliquer aux travaux d’enseignants en formation disposant au départ d’un bagage de compétences hétérogènes. Cette variété des compétences de départ a pour effet que les enseignants recourent de façon plus ou moins intensive à l’accompagnement pédagogique qui leur est proposé pour réaliser certaines tâches. Dans les cas d’un recours intensif à l’accompagnement se pose la question de la part de la note finale qui revient véritablement à l’enseignant-participant. Ces tensions entre équité et différentiation sont analysées dans le cadre du master complémentaire en pédagogie de l’enseignement supérieur organisé à l’Université de Liège (IFRES-FAPSE). Un outil est proposé pour les aborder : une grille visant à objectiver l’intensité de l’accompagnement dispensé/reçu et donc à apporter un éclairage plus nuancé sur les résultats de l’évaluation finale standardisée. [less ▲]

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See detailUsing shear strain localisation to model the fracturing around gallery in unsaturated Callovo-Oxfordian claystone
Pardoen, Benoît ULg; Levasseur, Séverine ULg; Collin, Frédéric ULg

in Chau, Kam Tim; Zhao, Jidong (Eds.) Bifurcation and Degradation of Geomaterials in the New Millennium (2015, January 28)

Galleries drilling leads to damage propagation, fracturing and properties modifications in the surrounding medium. The prediction of the damaged zone behaviour is an important matter and needs to be ... [more ▼]

Galleries drilling leads to damage propagation, fracturing and properties modifications in the surrounding medium. The prediction of the damaged zone behaviour is an important matter and needs to be properly assessed. To do so the fractures can be modelled using shear strain localisation. The coupled local second gradient model is used under unsaturated conditions to correctly model the strain localisation behaviour. The permeability evolution and the rock desaturation due to air ventilation in galleries are considered. Finally, a hydro-mechanical modelling of a gallery excavation in Callovo-Oxfordian claystone is performed leading to a fairly good representation of the damaged zone. [less ▲]

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See detailContribution de la pédagogie inversée et du recours aux boitiers de votes à l’optimisation de l’antibiothérapie en médecine vétérinaire
Gustin, Pascal ULg; Vandeweerd, Jean-Michel; Detroz, Pascal ULg et al

in Detroz, Pascal; Borsu, Olivier (Eds.) actes du 27ème colloque de l ADMEE Europe : l'évaluation à la lumière des contextes et des disciplines (2015, January 28)

Une nouvelle intervention pédagogique a été mise en place en 2012-2013 en premier master. Basée sur les principes de la pédagogie inversée et de l’usage des boîtiers de votes, son objectif était ... [more ▼]

Une nouvelle intervention pédagogique a été mise en place en 2012-2013 en premier master. Basée sur les principes de la pédagogie inversée et de l’usage des boîtiers de votes, son objectif était d’améliorer la capacité des étudiants à réaliser un choix raisonné des médicaments antimicrobiens en situations cliniques simples en favorisant l’interactivité et la résolution de problèmes. Le dispositif et l’évaluation Trois heures de cours ont été consacrées à expliquer la démarche décisionnelle visant à optimaliser l’antibiothérapie et à présenter de manière magistrale une première famille d’antibiotiques. Des notes de cours détaillées et des résumés des points essentiels ont été mis à disposition des étudiants qui disposaient d’un boîtier vote électronique. Pour chaque situation, les questions majeures nécessaires à la structuration d’une démarche décisionnelle cohérente ont été sélectionnées par l’enseignant sur base des critères de choix des antibiotiques. Chacune d’elle était décomposée en sous-question pour lesquelles plusieurs solutions décisionnelles ont été proposées aux étudiants (Turning Point). A chaque étape, un vote suivi d’une discussion avec les étudiants était organisé, visant à comprendre le choix proposé par l’enseignant, discuter les choix alternatifs justifiés par les étudiants et à expliquer les erreurs décisionnelles mises en évidence par le vote. Une enquête de satisfaction a été réalisée. A l’examen oral de fin d’année, les connaissances et la capacité à structurer un schéma décisionnel ont été évaluées. Résultats et conclusion Le haut degré de satisfaction des étudiants, le sentiment d’un meilleur apprentissage de la démarche et la supériorité des notes d’examen des étudiants ayant suivi cette formation sont des éléments concordants en faveur d’un effet positif de l’intervention pédagogique sur la capacité décisionnelle des étudiants. Ce résultat a été obtenu par la combinaison de la pédagogie inversée, couplée à l’usage des boîtiers de vote et à la conception de questionnaires structurés pour discuter les démarches décisionnelles de manière interactive au sein d’une cohorte importante d’étudiants. [less ▲]

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See detailOncologie et revalidation physique
Leclerc, Anne-France ULg; Foidart-Dessalle, Marguerite ULg; COUCKE, Philippe ULg et al

in Abstract Book du Colloque "Femmes et Santé" (Université d'Hiver) (2015, January 26)

Le cancer constitue une maladie fréquente en Belgique puisqu'un homme sur trois et une femme sur quatre sont confrontés à la maladie avant l'âge de septante-cinq ans (Fondation Registre du Cancer, 2008 ... [more ▼]

Le cancer constitue une maladie fréquente en Belgique puisqu'un homme sur trois et une femme sur quatre sont confrontés à la maladie avant l'âge de septante-cinq ans (Fondation Registre du Cancer, 2008). La détection précoce et l'amélioration des traitements du cancer, généralement une combinaison de chirurgie, radiothérapie, chimiothérapie, hormonothérapie et thérapie ciblée, ont permis une augmentation du taux de survie. Cependant, ces traitements peuvent être à l'origine de nombreux effets secondaires, non seulement précoces, mais également tardifs, réduisant la qualité de vie. De nombreux programmes de réhabilitation après cancer sont basés sur la psychothérapie et le support social uniquement, or ceux-ci n'agissent généralement pas sur les problèmes physiques encourus par les patients tels que la fatigue, la prise de poids et la diminution des capacités fonctionnelles. C'est pourquoi nous émettons l'hypothèse qu'une revalidation physique, associée à des séances psycho-éducatives et constituant ainsi une prise en charge multidisciplinaire, permettrait d'améliorer d'autant plus la qualité de vie et le bien-être tant physique que psychologique des patients ayant été traités pour un cancer. [less ▲]

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See detailThe nameless local.
Gantois, Gisele ULg; Schoonjans, Yves

in Van Balen, Koen; Vandesande, Aziliz (Eds.) Community Involvement in Heritage (2015, January 24)

In dealing with monuments of small scale and local importance historical social, cultural, religious or political networks can be detected once we transcend the solely focus on the object. At the same ... [more ▼]

In dealing with monuments of small scale and local importance historical social, cultural, religious or political networks can be detected once we transcend the solely focus on the object. At the same time those buildings remain to have, up to today, an impact on the social and cultural stratification and an engaged community involvement is very often present. These building are often considered modest heritage although they show great craftsmanship. There is a well-known framework to cope with the material aspects of conservation and restoration of these buildings, but a framework for the intangible layers is lacking. In the tackled heritage societal value was important and crucial. The buildings became collective by their use, local significance or representation. They became beacons, points of reference or meeting points. They form complex spaces of experiences, places of attachment and recognition. Within managing heritage one is hardly focusing on the ‘nameless local’, i.e. the person or social groups that in most cases appropriated the building and its significance ‘in the meantime’, the time between the original occupation and the project of adaptive reuse of the monument. Forgetting about this informal actor is not difficult as they are often invisible or disappearing amid all other elements, especially if one focuses only on the materiality of the building as a historic data. This is enforced by the fact that there are no approved ways for it tracing this. In this contribution some of the tested concepts and tools discovered in the search for and the development of strategies to develop historical buildings in their context differently by reading, mapping, unveiling and understanding their societal meaning for the individual and for the local community will be described. [less ▲]

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See detailProduction of extracellular polysaccharide by Enterobacter A47 using cheese whey as the sole carbon source
Antunes, S.; Alves, V.D.; Grandfils, Christian ULg et al

in Proceeding of the meeting (2015, January 19)

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See detailCharacterization of the chitin-glucan complex extracted from Komagataella pastoris cell wall
Farinha, I.; Duarte, P.; Pimentel et al

in Proceeding of the meeting (2015, January 19)

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See detailLeaky-wave-induced disks around Be stars: a pulsational analysis on their formation
Godart, Mélanie ULg; Shibahashi, Hiromoto; Dupret, Marc-Antoine ULg et al

in New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry, Proceedings of the International Astronomical Union, IAU Symposium, Volume 307 (2015, January 01)

Be stars are B-type stars near the main sequence which undergo episodic mass loss events detected by emission lines, whose line shape and intensity vary with a timescale of the order of decades ... [more ▼]

Be stars are B-type stars near the main sequence which undergo episodic mass loss events detected by emission lines, whose line shape and intensity vary with a timescale of the order of decades. Spectroscopic observations show a large rotation velocity such that one of the prevailing scenarios for the formation of the equatorial disk consists in an increasing equatorial rotation velocity to the break-up limit where gravity is challenged by the centrifugal force. We investigate here a new scenario recently suggested by Ishimatsu & Shibahashi (2013), in which the transport of angular momentum through the photosphere would be achieved by leaky waves, keeping the rotation velocity still below the break-up limit. [less ▲]

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See detailAsteroseismology of Massive Stars: Some Words of Caution
Noels-Grötsch, Arlette ULg; Godart, M.; Salmon, Sébastien ULg et al

in Meynet, Georges; Georgy, Cyril; Groh, Jose (Eds.) et al Proceedings of the International Astronomical Union S307 (2015, January 01)

Although playing a key role in the understanding of the supernova phenomenon, the evolution of massive stars still suffers from uncertainties in their structure, even during their ``quiet'' main sequence ... [more ▼]

Although playing a key role in the understanding of the supernova phenomenon, the evolution of massive stars still suffers from uncertainties in their structure, even during their ``quiet'' main sequence phase and later on during their subgiant and helium burning phases. What is the extent of the mixed central region? In the local mixing length theory (LMLT) frame, are there structural differences using Schwarzschild or Ledoux convection criterion? Where are located the convective zone boundaries? Are there intermediate convection zones during MS and post-MS phase, and what is their extent and location? We discuss these points and show how asteroseismology could bring some light on these questions. [less ▲]

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See detailIs λ Cep a pulsating star?
Uuh-Sonda, J. M.; Eenens, P.; Rauw, Grégor ULg

in Meynet, Georges; Georgy, Cyril; Groh, José (Eds.) et al IAU Symposium (2015, January 01)

It has been proposed that the variability seen in absorption lines of the O6Ief star λ Cep is periodical and due to non-radial pulsations (NRP). We have obtained new spectra during six campaigns lasting ... [more ▼]

It has been proposed that the variability seen in absorption lines of the O6Ief star λ Cep is periodical and due to non-radial pulsations (NRP). We have obtained new spectra during six campaigns lasting between five and nine nights. In some datasets we find recurrent spectral variations which move redward in the absorption line profile, consistent with perturbations on the stellar surface of a rotating star. However the periods found are not stable between datasets, at odds with the NRP hypothesis. Moreover, even when no redward trend is found in a full dataset of an observing campaign, it can be present in a subset, suggesting that the phenomenon is short-lived, of the order of a few days, and possibly linked to transient magnetic loops. [less ▲]

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See detailThe X-ray properties of magnetic massive stars
Nazé, Yaël ULg; Petit, Véronique; Rinbrand, Melanie et al

in IAU Symposium (2015, January 01)

Early-type stars are well-known to be sources of soft X-rays. However, this high-energy emission can be supplemented by bright and hard X-rays when magnetically confined winds are present. In an attempt ... [more ▼]

Early-type stars are well-known to be sources of soft X-rays. However, this high-energy emission can be supplemented by bright and hard X-rays when magnetically confined winds are present. In an attempt to clarify the systematics of the observed X-ray properties of this phenomenon, a large series of Chandra and XMM observations was analyzed, over 100 exposures of 60% of the known magnetic massive stars listed recently by Petit et al. (2013). It is found that the X-ray luminosity is strongly correlated with mass-loss rate, in agreement with predictions of magnetically confined wind models, though the predictions of higher temperature are not always verified. We also investigated the behaviour of other X-ray properties (absorption, variability), yielding additional constraints on models. This work not only advances our knowledge of the X-ray emission of massive stars, but also suggests new observational and theoretical avenues to further explore magnetically confined winds. [less ▲]

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See detailAn X-ray surprise in a magnetic pulsator
Nazé, Yaël ULg

in IAU Symposium (2015, January 01)

ξ[SUP]1[/SUP] CMa is a rare β Cep star with a strong magnetic field. To gain new insight on this object, a dedicated campaign using XMM-Newton was performed. These data reveal a new type of variations, X ... [more ▼]

ξ[SUP]1[/SUP] CMa is a rare β Cep star with a strong magnetic field. To gain new insight on this object, a dedicated campaign using XMM-Newton was performed. These data reveal a new type of variations, X-ray pulsations, posing a new challenge to our understanding of stellar winds. [less ▲]

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See detailAre the stars of a new class of variability detected in NGC 3766 fast rotating SPB stars?
Salmon, Sébastien ULg; Montalbán, J.; Reese, D. R. et al

in Meynet, Georges; Georgy, Cyril; Groh, Jose (Eds.) et al Proceedings of the International Astronomical Union S307 (2015, January 01)

A recent photometric survey in the NGC 3766 cluster led to the detection of stars presenting an unexpected variability. They lie in a region of the Hertzsprung-Russell (HR) diagram where no pulsation are ... [more ▼]

A recent photometric survey in the NGC 3766 cluster led to the detection of stars presenting an unexpected variability. They lie in a region of the Hertzsprung-Russell (HR) diagram where no pulsation are theoretically expected, in between the δ Scuti and slowly pulsating B (SPB) star instability domains. Their variability periods, between ~0.1-0.7 d, are outside the expected domains of these well-known pulsators. The NCG 3766 cluster is known to host fast rotating stars. Rotation can significantly affect the pulsation properties of stars and alter their apparent luminosity through gravity darkening. Therefore we inspect if the new variable stars could correspond to fast rotating SPB stars. We carry out instability and visibility analysis of SPB pulsation modes within the frame of the traditional approximation. The effects of gravity darkening on typical SPB models are next studied. We find that at the red border of the SPB instability strip, prograde sectoral (PS) modes are preferentially excited, with periods shifted in the 0.2-0.5 d range due to the Coriolis effect. These modes are best seen when the star is seen equator-on. For such inclinations, low-mass SPB models can appear fainter due to gravity darkening and as if they were located between the δ Scuti and SPB instability strips. [less ▲]

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See detailPortfolio, un outil d’apprentissage et d’évaluation des compétences en formation d’adultes
Pirard, Florence ULg; Lambert, Isabelle ULg

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailL’évaluation de l’efficacité des approches didactiques : l’art de conjuguer didactique et évaluation ? Symposium du réseau EVADIDA
Fagnant, Annick ULg; Schillings, Patricia ULg

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailLa question des « objets » d’évaluation dans les différentes disciplines : Discussion du symposium
Fagnant, Annick ULg

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailRésolution de problèmes arithmétiques et représentations schématiques : comment évaluer l’efficacité d’approches didactiques contrastées ?
Fagnant, Annick ULg; Auquière, Amélie ULg; Vlassis, Joëlle

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailEst-il possible de cibler les acquis et les faiblesses des élèves face à la résolution de problèmes arithmétiques dans le cadre d’une évaluation externe non certificative ?
Demonty, Isabelle ULg; Fagnant, Annick ULg

in Detroz, Pascal; Borsu, Olivier (Eds.) Actes du 27e colloque de l'Admée-Europe. L'évaluation à la lumière des contextes et des disciplines. (2015, January)

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See detailPourquoi la théorie de la connaissance a besoin de la psychologie: les arguments de Stumpf
Dewalque, Arnaud ULg

in Gyemant, Maria (Ed.) Psychologie et psychologisme (2015, January)

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes ... [more ▼]

Mon objectif est double. Il s’agira, d’une part, de retracer la position de Carl Stumpf face à la querelle du psychologisme (lectures psychologistes de Kant vs lectures antipsychologistes néokantiennes) et, d’autre part, d’en tirer quelques implications d’allure très générale concernant la place qu’il convient de réserver aux considérations psychologiques en philosophie. Je suggérerai: (1) que Stumpf adopte une voie médiane entre psychologisme et antipsychologisme, (2) que cette voie médiane est représentative de l'orientation philosophique de Brentano et de son école, (3) qu'elle débouche sur une conception fine des rapports entre philosophie (en particulier théorie de la connaissance) et psychologie: la théorie de la connaissance a besoin de la psychologie, sans être à proprement parler "fondée" sur elle. [less ▲]

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See detailModelling Hydromechanical Dilation Geomaterial—Cavitation and Localization
Sieffert, Y.; Buzzi, O.; Collin, Frédéric ULg et al

in Chau, Kam Tim; Zhao, Jidong (Eds.) Bifurcation and Degradation of Geomaterials in the New Millennium (2015, January)

This paper presents an extension of the local second gradient model to multiphasic materials (solid particles, air, water) and including the cavitation phenomenon. This new development was made in order ... [more ▼]

This paper presents an extension of the local second gradient model to multiphasic materials (solid particles, air, water) and including the cavitation phenomenon. This new development was made in order to model the response of saturated dilatant materials under deviatoric stress and undrained conditions and possibly, in future, the behaviour of unsaturated soils [less ▲]

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See detailEvaluer les apprentissages dans le cadre d'une pédagogie par projet
Scheffers, Patricia ULg; Leduc, Diane; Le Coguiec, Eric

in Actes du 27e Colloque de l'ADMEE Euope (2015, January)

Avant d'être l'affaire des courants de l'éducation nouvelle, la pédagogie par projet était présente dans les discours de formation d'architecture italienne dès le 16e siècle. Aujourd'hui, elle s'inscrit ... [more ▼]

Avant d'être l'affaire des courants de l'éducation nouvelle, la pédagogie par projet était présente dans les discours de formation d'architecture italienne dès le 16e siècle. Aujourd'hui, elle s'inscrit parmi les multiples approches d'une pédagogie différenciée et est utilisée dans plusieurs disciplines, des arts aux sciences, en passant par l'ingénierie et l'administration. Plusieurs écrits existent à son sujet, mais peu s'attardent aux pratiques d'évaluation des apprentissages qu'elle génère. Pourtant, celle-ci est l'un des aspects les plus complexes de l'enseignement et le plus prenant puisque le professeur en est l'unique responsable et qu'il occupe près de la moitié de sa tâche (Laurier, Tousignant et Morrissette, 2005). Dimension fondamentale, et parfois difficile, dans le parcours de l'apprenant, l'évaluation des apprentissages impose actuellement un changement de culture important pour les professeurs, particulièrement lorsqu'il est question de pédagogie par projet. Pour certains d'entre eux, souvent peu formés en enseignement, mais possédant une expérience du métier reconnue, l'évaluation se limite au projet et à sa présentation devant un jury et les pairs au détriment de la qualité de la démarche et surtout des apprentissages réalisés (Allal, 2013; Beattie, 2006; Gaillot, 2009 ; Romainville, 2011). Dans la formation d'architecte, la pédagogie par projet fait partie intégrante du processus d'enseignement, d'apprentissage et d'évaluation. En atelier de projet de 3e bachelier à l'ULg, l'évaluation des apprentissages exclusivement orientés sur le projet a mené, après plusieurs années d'expérimentations, à la création de dispositifs adaptés et spécifiques. S'appuyant sur les principes clés et actuels en évaluation des apprentissages, ces dispositifs tentent de mettre en avant-plan un souci de concordance entre le contenu à enseigner et les méthodes utilisées. Croisant les regards théoriques et pratiques sur le sujet de l'évaluation de performances complexes intégrant créativité et innovation, un bilan des expériences sera établi et tentera de dégager des pistes de régulations pour continuer d'élever le niveau de validité du processus présenté. [less ▲]

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See detailExperimental evaluation of a pairwise broadcast synchronization in a low-power cyber-physical system
Ghoshdastider, U; Viga, R; Kraft, Michael ULg

in Proceedings of "Radio Wireless Week : San Diego - Janvier 2015" (2015, January)

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See detailA sensor for stiffness change sensing based on three coupled resonators with enhanced sensitivity
Zhao, C; Wood, GS; Xie, J et al

in Proceedings of "IEEE MEMS Conf. : Portugal - Janvier 2015" (2015, January)

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See detailProtein hydrolysate for preterm infants
SENTERRE, Thibault ULg

in SENTERRE, Thibault; Rigo, Jacques (Eds.) 86th Nestlé Nutrition Institute Workshop on “Protein in Neonatal and Infant Nutrition: Recent Updates”. (2015)

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See detailExplicit Multi Model Predictive Control of a Waste Heat Rankine Based System for Heavy Duty Trucks
Grelet, Vincent; Dufour, Pascal; Nadri, Madiha et al

in Proceedings of the 54th IEEE Conference on Decision and Control (2015)

This paper presents an explicit multi-model predictive controller (MMPC) for a waste heat recovery system (WHRS) mounted on a heavy duty truck engine. WHRS based on the Rankine cycle principle attracts a ... [more ▼]

This paper presents an explicit multi-model predictive controller (MMPC) for a waste heat recovery system (WHRS) mounted on a heavy duty truck engine. WHRS based on the Rankine cycle principle attracts a lot of interest in the heavy duty industry, over the past few years, to decrease the fuel consumption and reach the future pollutant emissions standards. Control issues have still to be faced before the integration of such a system into a vehicle. Model predictive controllers suits really well for our control purpose due to their ability to handle online optimal control problem. This paper focuses on the development of an explicit control law based on MMPC with aim to control the fluid temperature at the inlet of the expansion machine in order to increase the system performance and the reliability. [less ▲]

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See detailToponymie et anthroponymie dans l'Atlas linguistique de la Wallonie
Baiwir, Esther ULg

in Germain, Jean; Tamine, Michel (Eds.) Mode(s) en onomastique. Onomastique belgoromane (2015)

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See detailMonte Carlo Simulations of Autorotative Dynamics of a Simple Tower Crane Model
Vanvinckenroye, Hélène ULg; Denoël, Vincent ULg

in Proceedings of the 14th International Conference on Wind Engineering (2015)

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been ... [more ▼]

The increasing number of crane accidents recorded over the last years might be understood as a need for progress on crane modeling. The induced risk of self-excited vibrations has already been investigated through numerous experiments. This work presents a simple numerical model of a crane in a turbulent wind field, in order to support the available experimental approaches. First, the problem is defined with the necessary assumptions of the model. Second, the equation of motion is developed and wind characteristics are detailed. This equation presents several specificities requiring dedicated resolution methods. In a first analysis, the crane model is simplified in order to approach the behavior of the parametric pendulum and enable a general comparison of both responses. Indeed, the parametric pendulum is a well-known problem that is already widely described in the literature. In a second step, the response of the crane is studied under a realistic stochastic wind load with the full model. [less ▲]

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See detailThalamic volume as a biomarker for Disorders Of Consciousness. Progress in Biomedical Optics and Imaging
Rubeaux, M; Mahalingam, J; Gomez, F et al

in Proceedings of SPIE (2015)

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See detailLa signature dans les lettres du duc de Bourgogne Philippe le Bon
Dumont, Jonathan ULg; Marchandisse, Alain ULg

in Dumézil, Bruno; Vissière, Laurent (Eds.) Epistolaire politique II : « Authentiques et autographes (IVe–XVIe siècles) » (2015)

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See detailExpressions verbales de la présence française en Italie entre xve et xvie siècles
Dumont, Jonathan ULg

in Vissière, Laurent; Hablot, Laurent (Eds.) Cris, Jurons et Chansons. Entendre les « paysages sonores » du Moyen Age et de la Renaissance (2015)

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See detailLes traumatisés de Sedan (1870) et la Belgique
Bechet, Christophe ULg

in Cochet, François (Ed.) Expérience combattante –XIXe-XXIe siècles, IV : L’expérience traumatique (2015)

Au lendemain de la bataille de Sedan (1er septembre 1870), la Belgique accueillit un grand nombre de blessés français et prussiens. Le transfert des grands blessés se fit grâce à l'action de l'association ... [more ▼]

Au lendemain de la bataille de Sedan (1er septembre 1870), la Belgique accueillit un grand nombre de blessés français et prussiens. Le transfert des grands blessés se fit grâce à l'action de l'association belge de secours aux militaires blessés en temps de guerre (Croix Rouge de Belgique). L'accueil favorable des autorités belges répondait autant à des considérations humanitaires que politiques. Sur le plan technique, les graves blessures causées par les armes à feu, de plus en plus puissantes, posèrent de nouveaux défis aux chirurgiens belges. [less ▲]

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See detailThe Syntax-Semantics Interface in Earlier Egyptian: a Case Study in Verbs of Cognition
Winand, Jean ULg

in Allen, James P.; Collier, Mark; Stauder, Andréas (Eds.) Coping with Obscurity: the Brown Workshop on Earlier Egyptian Grammar (2015)

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