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See detailIntegration of Inland Waterway Transport in the Intermodal Supply Chain: a Joint Research Agenda
Caris, An; Limbourg, Sabine ULg; Macharis, Cathy et al

in Rigo, Philippe; Wolters, Milou (Eds.) Proceedings of the PIANC SMART Rivers Conference 2013 (2013)

This paper identifies research opportunities which will enable the further integration of inland waterway transport in the intermodal supply chain. Intermodal transport may be interpreted as a chain of ... [more ▼]

This paper identifies research opportunities which will enable the further integration of inland waterway transport in the intermodal supply chain. Intermodal transport may be interpreted as a chain of actors who supply a transport service. Inland navigation can play a crucial role in increasing supply chain service performance. A first group of research challenges has the objective to encourage efficient operations in IWT: development of a system wide model for IWT, integration of operational planning systems and analysis of bundling networks. A second group of research efforts is directed towards shippers and consignees who use the intermodal transport chain to send or receive their goods: further development of models that integrate intermodal transport decisions with supply chain decisions and creation of green supply chains. A third group of research challenges concerns the problem domain of external cost calculations. Finally detailed time series data on freight transport should be collected to support these future research tracks. [less ▲]

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See detailMagnetic fields in O stars
Nazé, Yaël ULg

in proceedings of "Putting A-stars into context" (2013)

Over the last decade, large-scale, organized (generally dipolar) magnetic fields with a strength between 0.1 and 20 kG were detected in dozens of OB stars. This contribution reviews the impact of such ... [more ▼]

Over the last decade, large-scale, organized (generally dipolar) magnetic fields with a strength between 0.1 and 20 kG were detected in dozens of OB stars. This contribution reviews the impact of such magnetic fields on the stellar winds of O-stars, with emphasis on variability and X-ray emission. [less ▲]

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See detailDislocations à gauche et nature des subordonnants en Latin classique
Longrée, Dominique ULg; Philippart de Foy, Caroline ULg; Purnelle, Gérald ULg

in Bodelot, Colette; Gruet-Skrabalova, Hana; Trouilleux, François (Eds.) Morphologie, syntaxe et sémantique des subordonnants (2013)

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See detailShaking table tests on unreinforced load-bearing masonry walls - Comparison with simple rocking models
Mordant, Christophe ULg; Dietz, Matt; Degée, Hervé ULg

in ECCOMAS Thematic Conference - COMPDYN 2013: 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Proceedings - An IACM Special Interest Conference (2013)

Assessment of the overall seismic performances of multi-storey unreinforced masonry structures requires an appropriate characterization of the behaviour of their structural components, in particular when ... [more ▼]

Assessment of the overall seismic performances of multi-storey unreinforced masonry structures requires an appropriate characterization of the behaviour of their structural components, in particular when these are subjected to a dynamic ground motion input. In order to develop a better understanding on this issue and in a further perspective of investigating the consequences of the presence of 1 cm thick rubber elements used for improving the sound-proofing performances of the building, shaking table tests have been carried out in the framework of the European project SERIES. Four single walls were tested. These were built with high resistance thin-bed layered clay masonry with empty vertical joints. Two of them had an aspect ratio close to 1, while the other two were close to 0.4. One wall of each aspect ratio included rubber devices at its bottom and top to enable comparisons and conclusions about the influence of rubber on the wall behaviour. The test results were then partially compared to results obtained with a theoretical rocking model considering the wall as a rigid body. The results summarized in the present contribution evidence a significant rocking behaviour for the highest input acceleration levels. Characterization of this behaviour is however strongly dependent on the aspect ratio of the wall and on the presence or not of rubber devices in terms of natural frequencies, damping, dynamic amplifications and progressive damage with increasing acceleration levels. It is also showed that the theoretical rocking predictions are in good agreement with the experimental results for high acceleration levels, while the behaviour is closer to the one of a cantilever for the lower levels. It is finally evidenced that, in presence of acoustic rubber devices, amplitudes of the rocking motion are increased but with a more limited damaging of the wall because of the capacity of the rubber to absorb the impact energy. Results of this study on single walls are expected to be further extended to global masonry structures, account taken for the influence of actual boundary conditions of the wall. [less ▲]

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See detailEtude tribologique sur des lubrifiants solides à haute température dans des machines de détente
Legros, Arnaud ULg; Zaïdi, Hamid; Diny, Mouad et al

in La tribologie : fondamentaux et applications complexes (2013)

Dans le cadre de la conception d’un expanseur dédié à la récupération d’énergie à l’échappement d’un moteur à combustion interne, une étude sur des lubrifiants solides a été menée afin de choisir le ... [more ▼]

Dans le cadre de la conception d’un expanseur dédié à la récupération d’énergie à l’échappement d’un moteur à combustion interne, une étude sur des lubrifiants solides a été menée afin de choisir le couple de matériaux adéquat pour le joint principal de la machine. Ce joint doit assurer à la fois une fonction d’étanchéité interne et limiter ainsi les pertes par fuites internes de l’expanseur. Il doit également présenter un coefficient de frottement la plus faible possible afin de réduire les pertes par friction. Ce joint est en effet sollicité par des contraintes en frottement plan dans un environnement sous vapeur d’eau à des températures pouvant atteindre 250°C. Ces températures rendent complexe l’utilisation d’huile et le recours à des matériaux auto lubrifiants est dès lors l’unique solution. [less ▲]

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See detailPriests and Cult Personnel in Three Hellenistic Families
Carbon, Jan-Mathieu ULg; Pirenne-Delforge, Vinciane ULg

in Horster, Marietta; Klöckner, Anja (Eds.) Cities and Priests. Cult Personnel in Asia Minor and the Aegean Islands from the Hellenistic to the Imperial Period (2013)

This paper offers an examination of three significant familial inscriptions from the Hellenistic period. The texts are detailed cultic dossiers initiated by three individuals—Diomedon on Cos, Poseidonios ... [more ▼]

This paper offers an examination of three significant familial inscriptions from the Hellenistic period. The texts are detailed cultic dossiers initiated by three individuals—Diomedon on Cos, Poseidonios in Halicarnassus, and Epikteta on Thera. Though they are often very briefly grouped together, these inscriptions are discussed here in greater textual and contextual detail. In particular, the analysis focusses on the cult personnel, which is appointed in these families, demonstrating that it remains independent from the polis, but is organised with reference to a civic framework. By setting these inscriptions in parallel, the discussion opens up productive perspectives on the evolutions of familial cults in the Hellenistic period.—The inscription of Poseidonios is reedited in an Appendix by Jan-Mathieu Carbon. [less ▲]

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See detailMutations urbaines et problématique d'accès à l'eau potable et à l'assainissement dans une zone urbaine d'un pays en développement : cas de la ville de Yaoundé (Centre-Cameroun)
Kouam Kenmogne, Guy-Romain; Djomou Bopda, Serge Laurent; Rosillon, Francis ULg

in Actes du 5ème colloque international Water resources and sustainable development (2013)

La présente étude réalisée dans le bassin versant de l'Abiergué à Yaoundé (Cameroun) a permis de mettre en exergue les lacunes liées aux services d'accès à l'eau potable et à l'assainissement dans le ... [more ▼]

La présente étude réalisée dans le bassin versant de l'Abiergué à Yaoundé (Cameroun) a permis de mettre en exergue les lacunes liées aux services d'accès à l'eau potable et à l'assainissement dans le processus d'urbanisation galopante et non planifiée d'une ville ou d'un pays en développement. Les ménages ont recours au réseau conventionnel (40,3 %), puits (37,1 %), sources (10,1 %), bornes fontaines (9,2 %) et forages (2,4 %) pour couvrir leurs besoins en eau. L'évacuation des excrétas se fait au travers des latrines à fond perdu (58,7 %), latrines à canon (7,7 %), latrines améliorées (5,5 %) et wc modernes avec fosse (24,1 %). Les déchets solides sont évacués suivant divers canaux : bacs publics (49,1 %), enlèvement direct par le concessionnaire (20,2 %), terrains vagues (13,8 %), fosses (6,3 %), rigoles (5,5 %) et service de précollecte (1,7 %). Il incombe en premier aux pouvoirs publics aidés par les acteurs non institutionnels d'y apporter des solutions malgré les pesanteurs d'ordre social, économique et foncier. [less ▲]

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See detailDu Grand Monarque au Mouton Blanc. Souvenirs d'écrivains
Droixhe, Daniel ULg

in Droixhe, Daniel (Ed.) Spa, carrefour de l'Europe des Lumières. Les hôtes de la cité thermale au XVIIIe siècle, sous la dir. de Daniel Droixhe, avec la collaboration de Muriel Collart (2013)

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See detailL'évolution jurisprudentielle sur le statut du notaire
Donnay, Luc ULg

in Leleu, Yves-Henri (Ed.) Chroniques notariales (2013)

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See detailẢnh hưởng của kiểu gen halothane đến năng suất sinh sản của đàn lợn hạt nhân Piétrain kháng stress trong điều kiện chuồng kín và chuồng hở
Do Duc, Luc ULg; Ha Xuan, Bo; Vu Dinh, Ton et al

in Báo cáo khoa học Hội nghị Khoa học Công nghệ sinh học toàn quốc 2013 (2013)

The study was carried out on purebred nucleus herd of stress negative Piétrain pigs raised at Dong Hiep farm, Hai Phong province (HP) consisting of 18 males (13 CC and 5 CT) and 45 sows (31 CC and 14 CT ... [more ▼]

The study was carried out on purebred nucleus herd of stress negative Piétrain pigs raised at Dong Hiep farm, Hai Phong province (HP) consisting of 18 males (13 CC and 5 CT) and 45 sows (31 CC and 14 CT) and at Animal farm of Hanoi University of Agriculture (HN), including 9 males (3 CC and 6 CT) and 21 sows (11 CC and 10 CT) from May 2010 in April 2013 to evaluate the effect of halothane genotype of boars (CC and CT) and halothane genotype of sows (CC and CT) on reproductive performance. The results showed that reproductive performance was not significantly different between boars CC and CT (P>0 .05). Body weight of piglets born from sows CT (1.54 kg) was higher than those from CC (1.42 kg) at birth, however at weaning this trend was opposite (6.46 kg vs. 6.00 kg). Reproduction performances of CC and CT boars were similar under opening and closing farm conditions. However, using of CC sows can improve the body weight of piglets at the weaning; in particularly, CC sows in the closing farm condition. [less ▲]

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See detailPerceptual andMotor Inhibition in ADHD:Evidence for a specific impairment?
Catale, Corinne ULg; Geurten, Marie ULg; Lejeune et al

in Abstracts book (2013)

Objective: Inhibition, one of the core executive processes in executive functioning (Miyake et al., 2000) is generally not considered as an unitary construct (see for example, Friedman & Miyake, 2004 ... [more ▼]

Objective: Inhibition, one of the core executive processes in executive functioning (Miyake et al., 2000) is generally not considered as an unitary construct (see for example, Friedman & Miyake, 2004; Nassauer & Halperin, 2003). Following the perceptual versus motor dissociation proposed by Nassauer and Halperin (2003), we studied perceptual and motor inhibition in children with AttentionDeficit andHyperactivity Disorder (ADHD). Participants and Methods: Sixteen 7-12 years old children with ADHD and 30 matched control children were administered a version of the Conflict Resolution task (Nassauer & Halperin, 2003) adapted for children. In this task, the perceptual inhibition task required the children to respond to the direction of a dog (running towards the left or the right) while ignoring its location (left or right) on a computer screen. In the motor inhibition task, the children had to press a key corresponding to the opposite direction of a centrally running dog. Results: Comparisons analyses of inhibition performances between ADHD children and matched controlled subjects showed that ADHD children performed significantly less accurately for stimulus-stimulus characteristic conflicts (i.e., perceptual inhibition) than for stimulus- response conflicts (i.e., motor inhibition), which suggests a specific impairment in perceptual inhibition in our group of ADHD children. Conclusions: In conclusion, this study supports the presence of two forms of inhibition which can be differentiated and specifically impaired in 7- to 12-year-old ADHD children. [less ▲]

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See detailLe congrès wallon de 1912: impact, significations et retombées
Lanneau, Catherine ULg

in Destatte, Philippe; Lanneau, Catherine; Meurant-Pailhe, Fabrice (Eds.) Jules Destrée, « La Lettre au roi » et au-delà (2013)

Pris en tenaille entre les élections du 2 juin et la publication de la Lettre au Roi, le congrès wallon de Liège du 7 juillet 1912 reste peu connu. En termes de souvenir collectif et d’inévitable ... [more ▼]

Pris en tenaille entre les élections du 2 juin et la publication de la Lettre au Roi, le congrès wallon de Liège du 7 juillet 1912 reste peu connu. En termes de souvenir collectif et d’inévitable hiérarchisation des événements historiques, ce sont bien deux autres congrès wallons, tenus à Liège également, qui surnagent : le congrès « identitaire » de 1905 et le fameux congrès national d’octobre 1945. Pourtant, le congrès de 1912 a eu au moins deux implications fondamentales : entretenir, au cœur de l’été le débat sur la séparation administrative, qui rebondira après la lettre de Destrée, et acter la désignation d’un comité d’action wallonne dont les premiers noms sont proposés en séance. C’est l’origine de l’Assemblée wallonne. Notre contribution proposera d’abord un bref résumé des débats ayant animé le congrès, en montrant les nuances entre le compte rendu officiel et celui des observateurs présents. Elle s’emploiera ensuite à analyser la réception du congrès dans l’opinion en insistant sur l’idée de séparation administrative. Qui se dit séparatiste ? Que recouvre cette expression, entre provincialisme et régionalisme ? Quels sont les arguments des partisans et des adversaires de la séparation ? Comment le contexte national et international de 1912 rejaillit-il sur ce débat ? [less ▲]

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See detailCharacterisation of cyclicity and relative sea-level fluctuations using magnetic susceptibility, Late Devonian (Frasnian) Hull platform, Canning Basin, Australia.
Da Silva, Anne-Christine ULg; George; Chow et al

in Whalen; Osadetz; Richards (Eds.) et al IGCP-580/596, Geophysical and Geochemical techniques : a window on the Paleozoic world, Abstract book (2013)

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See detailEffect of Age and Maternal Dietary Addition of Omega-3 Fatty Acids EPA and DHA in Broiler Breeders on Incubation Performance
Koppenol, A.; Buyse, J.; Wang, Y. et al

in Proceedings of the 6th Combined Workshop on Fundamental Physiology and Perinatal Development in Poultry (2013)

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See detailMontrer l’invisible. Les dieux et leurs statues dans la céramique grecque
Collard, Hélène ULg

in Borgeaud, Philippe; Fabiano, Doralice (Eds.) Perception et construction du divin dans l'Antiquité (2013)

Cette étude examine un groupe de vases particuliers, qui amènent une série de questions intéressantes sur le statut de l’image divine et sur les modes de représentation du divin en Grèce ancienne. Il ... [more ▼]

Cette étude examine un groupe de vases particuliers, qui amènent une série de questions intéressantes sur le statut de l’image divine et sur les modes de représentation du divin en Grèce ancienne. Il s’agit de documents attiques et italiotes sur lesquels une divinité est représentée à côté de sa propre statue. La question qui se pose d’emblée est celle du sens de ce type de figuration, qui « redouble » en quelque sorte la divinité. On tente de montrer ici que le « redoublement » n’est pas une simple redondance, car ces images mettent en scènes deux modes de présence différents. [less ▲]

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See detailComparative analysis of the energy dissipation on a stepped spillway downstream of a Piano Key Weir
Silvestri, Aurélien ULg; Archambeau, Pierre ULg; Pirotton, Michel ULg et al

in Erpicum, Sébastien; Laugier, Frédéric; Pfister, Michael (Eds.) et al Labyrinth and Piano Key Weirs II - PKW 2013 (2013)

A systematic experimental study has been carried out to compare the residual energy at the toe of a stepped spillway of varied length considering a classical ogee-crested weir (OCW) or two different piano ... [more ▼]

A systematic experimental study has been carried out to compare the residual energy at the toe of a stepped spillway of varied length considering a classical ogee-crested weir (OCW) or two different piano key weirs (PKW) at the top of the structure. Four spillway lengths have been considered on a wide range of discharge. An indirect method has been used to compute the residual flow energy at the spillway toe from water depth measurements in a horizontal channel downstream. The results indicate that uniform flow conditions, i.e. flow energy at the spillway toe independent of the spillway length, are reached on significantly shorter spillways downstream of a PKW than downstream of an OCW. However, the uniform flow energy at constant discharge on the spillway is found to vary depending on the weir type. In particular, it is smaller downstream of the OCW than downstream of the PKWs. [less ▲]

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See detailExtension of Davenport's Background/Resonant decomposition for the estimation of higher response moments
Denoël, Vincent ULg

in Proceedings of the Sixth European-African Conference on Wind Engineering (2013)

The non Gaussian buffeting analysis of a structure subjected to turbulent wind may be advantageously performed with a Volterra approach. Although this concept may be applicable to nonlinear structures ... [more ▼]

The non Gaussian buffeting analysis of a structure subjected to turbulent wind may be advantageously performed with a Volterra approach. Although this concept may be applicable to nonlinear structures, the scope of this paper is limited to structures with a deterministic linear behavior. In this case, the Volterra kernels take a simple explicit expression and the statistical moments of the structural response are simply recovered by a multi-dimensional integration of the corresponding spectra. Because the multi-dimensional spectra of the loading are usually determined numerically, these integrals have to be computed numerically too. The computational burden necessary for the estimation of these integrals turns out to be prohibitive as soon as high order moments are required (beyond and including 4th moment). The numerical conditioning is in fact again worse when the structural damping is low as the Volterra kernels then exhibit very large gradients in the frequency space, which are difficult to capture properly. Because the timescales related to the dynamics of the structure and to the random wind loading are well distinct, a nowadays customary decomposition of the response into Background and Resonant contributions (dating back to A. Davenport's earliest works) provides a very good estimation of the second statistical moment. Recently the concept has been extended to the Background/biResonant decomposition for the estimation of the third statistical moment of the response. This paper presents the extension to the computation of the fourth statistical moment, with the only assumptions of slight damping and low-frequency loading such as those that made Allan Davenport's Background/Resonant (B/R) decomposition fruitful. After some multiple scales considerations, the fourth moment of the response is approximated as the sum of a background component, a tetraresonant component and a mixed background-biresonant component. Mathematical developments will be presented in the full paper along with illustrative examples, while the current 4-page abstract just presents of a flavour of it. [less ▲]

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See detailLe bol de Wellin et son "parent" de Valsgärde?
Van Wersch, Line ULg; Mathis, François ULg

in Lorren, Claude (Ed.) La Gaule, le monde insulaire et l'Europe du Nord au haut Moyen Age (2013)

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See detailDevelopment of a generalized steady-state simulation framework for positive displacement compressors and expanders
Bell, Ian ULg; Lemort, Vincent ULg; Groll, Eckhard et al

in Proceedings of the International Conference on Compressors and their Systems 2013 (2013)

In this paper, a generalized framework is presented that can be used to simulate the steady-state performance of a wide range of positive displacement compressors and expanders (scroll, piston, screw ... [more ▼]

In this paper, a generalized framework is presented that can be used to simulate the steady-state performance of a wide range of positive displacement compressors and expanders (scroll, piston, screw, rotary, spool, etc.). The complete simulation algorithm is described, and an emphasis is placed on the numerical methods required to obtain robust behavior of the simulation. This formulation has been implemented into an open-source software package entitled PDSim written in the Python language. PDSim is the first open-source generalized compressor and expander simulation package. The source code can be freely obtained from http://pdsim.sf.net [less ▲]

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See detailAssessment of landslides activity in Maily‐Say Valley, Kyrgyz Tien Shan
Schlögel, Romy; Fernandez-Steeger, Tomas; Braun, Anika et al

in Landslide Science and Practice (2013)

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See detailDépasser les verrouillages de régimes socio-techniques des systèmes alimentaires pour construire une transition agroécologique
Baret, Philippe; Stassart, Pierre M ULg; Vanloqueren, Gaëtan et al

in van Ypersele, Jean-Pascal; Hudon, Marek (Eds.) Actes du Premier Congrès Interdisciplinaire du Développement Durable: Quelle transition pour nos sociétés? Thème 2: Alimentation , Agriculture, Elevage: 5-14 (2013)

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See detailA continuous fluid/solid transition model for semi-solid material modeling. Application to thixoforging.
Ponthot, Jean-Philippe ULg; Koeune, Roxane; Boman, Romain ULg

in 33° SENAFOR (CD) (2013)

This paper deals with the simulation of two extrusion tests by thixoforming: a non stationary extrusion test and a double-cup extrusion test. The simulations are based on a thermo-mechanical one-phase ... [more ▼]

This paper deals with the simulation of two extrusion tests by thixoforming: a non stationary extrusion test and a double-cup extrusion test. The simulations are based on a thermo-mechanical one-phase constitutive law that has been presented in details in several previous papers. A campaign of experimental extrusion testing has been conducted on a steel alloy and the comparison between the numerical and experimental results will validate the model under study. A new feature that has been added to the model is also discussed: the introduction of the phase change thermal effects such as the fusion latent heat and the contraction of the material [less ▲]

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See detailEmissions of ammonia, nitrous oxide and methane from pig houses: Influencing factors and mitigation techniques
Philippe, François-Xavier ULg; Nicks, Baudouin ULg

in Reconciling livestock management to the environment - Applying Best Available Technique (BAT): From the lab to the farm (2013)

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See detailComment favoriser la régulation interactive lors d’activités de résolution de problèmes en petits groupes ?
Demonty, Isabelle ULg; Dupont, Virginie ULg; Fagnant, Annick ULg

in Congrès international. Actualité de la recherche en éducation et en formation. AREF 2013 (2013)

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See detailThe clinical characteristics of pituitary adenomas (PA) in patients with primary hyperparathyroidism (PHPT) with and without MEN1 mutation
Filipponi, S; Rostomyan, Liliya ULg; VALDES SOCIN, Hernan Gonzalo ULg et al

in Symposium "Perspectives in Endocrinology" - Congresses Highlights 2012: ECE Firenze, ENDO Houston, ESPE Leipzig, SFE Toulouse, IWMEN Liège (2013)

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See detailThe astronomical calibration of the Givetian (Middle Devonian) time scale (Dinant Synclinorium, Belgium).
De Vleeschouwer; Boulvain, Frédéric ULg; Da Silva, Anne-Christine ULg et al

in American Geophysical Union Fall Meeting, Abstract (2013)

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See detailThe fracture studies of polycrystalline silicon based MEMS
Mulay, Shantanu Shashikant ULg; Becker, Gauthier; Vayrette, Renaud et al

in EUROSIME 2013 (2013)

The advantages of micro-electro-mechanical systems (MEMS), such as low power requirement, miniaturized sizes and costs reduction, have already made significant impact in many technological fields. MEMS ... [more ▼]

The advantages of micro-electro-mechanical systems (MEMS), such as low power requirement, miniaturized sizes and costs reduction, have already made significant impact in many technological fields. MEMS are now widely used as accelerometers, pressure sensors, and resonators etc. However, the determination of the mechanical properties of MEMS devices with high accuracy is still a challenging task due to their small dimensions and often anisotropic behaviour. This paper focuses on the modelling and simulation of the fracture of a key MEMS component, which is a polycrystalline silicon beam, by discontinuous Galerkin (DG) formulation combined with an extrinsic cohesive law (ECL) to describe the fracture process. As the beam is modelled by plane-stress 2D elements, an analytical equation to compute the effective fracture strength and the effective critical strain energy release rate in terms of the through-the-thickness fracture mode and of the orientation of the facet with respect to the crystal is also developed. At the end, a model is simulated, and the results are verified as per the physics of the problem and experiments. [less ▲]

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See detailThermal manipulations during embryogenesis induce long-lasting changes in the regulation of energy metabolism
Loyau, T.; Métayer-Coustard, S.; Crochet, S. et al

in Proceedings of the 6th Combined Workshop on Fundamental Physiology and Perinatal Development in Poultry (2013)

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See detailDevelopment of organic farming in Wallonia
Burny, Philippe ULg; Debode, Frédéric

in Bran, Florina; Ioan, Ildiko; Maruntelu, Tudor-George (Eds.) et al 5th International Conference "Ecological performance in a competitive economy", Bucharest 7-8 March 2013 : proceedings (2013)

Belgium is a highly densely populated country where agricultural methods usually consume large quantities of inputs, including pesticides and chemical fertilizers. However, organic farming is practiced ... [more ▼]

Belgium is a highly densely populated country where agricultural methods usually consume large quantities of inputs, including pesticides and chemical fertilizers. However, organic farming is practiced since many years and has registered a significant development during the last years, reaching 7% of the number of farmers in Wallonia (South of Belgium) and 7% of the Walloon agricultural area. Presently, the Walloon Minister for Agriculture strongly supports this sector and has proposed a strategic development plan of organic farming, the target being to reach 14% of the Walloon agricultural area in 2020. This paper presents and discusses the situation of organic farming in Wallonia and the main features and challenges of the new strategic development plan. [less ▲]

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See detailComparison of shear and pull-off tests for testing adhesion of different content limestone fillers mortars used as repair system
Chendes, Remus; Dan, Sorin; Courard, Luc ULg

in STOIAN, Valeriu; DAN, Daniel; BOB, Corneliu (Eds.) et al Construction sustainability: efficient solution for design, execution and rehabilitation of the building (2013)

When a repair operation is performed and a new concrete or mortar is applied on the old concrete substrate, it is very important to have a good bond between the old concrete layer and the repair concrete ... [more ▼]

When a repair operation is performed and a new concrete or mortar is applied on the old concrete substrate, it is very important to have a good bond between the old concrete layer and the repair concrete system. The bond strengths usually determinate using pure tensile tests (pull-off tests) because of the field applicability of this category of tests. However, in most of the applications, shear stress is the main reason of the bond failure. In general, bond strength under tensile is considered smaller than bond strength in shear stress conditions. The objective of this paper is to compare the results obtained from tensile and shear tests and to potentially determine a mathematical relation between shear and tension. The materials used for tests are Ordinary Portland Cement and modified limestone fillers mortars. Specific humidity storage conditions have been selected. [less ▲]

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See detailSymposium - Résolution de problèmes mathématiques et développement de compétences : sur quelles variables agir pour soutenir les élèves dans leur apprentissage ?
Fagnant, Annick ULg; Marcoux, Géry; Vlassis, Joëlle

in Congrès international. Actualité de la recherche en éducation et en formation. AREF 2013 (2013)

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See detailInvestigation of the glucose metabolism of the embryonic and neonatal broiler chicks by injection of insulin
Franssens, L.; Lesuisse, J.; Koppenol, A. et al

in EAAP series (2013)

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See detailTraining modifies the innate immune response both in the airways and in blood in horses
Frellstedt, Linda ULg; Gosset, Philippe; Desmet, Christophe ULg et al

in Proceedings of the ICI (2013)

Lower airway diseases are common problems in sports and racing horses. In humans, exercise has been associated with upper respiratory tract infections due to down-regulated expression of Toll-like ... [more ▼]

Lower airway diseases are common problems in sports and racing horses. In humans, exercise has been associated with upper respiratory tract infections due to down-regulated expression of Toll-like receptors (TLRs), costimulatory and antigen-presenting molecules on monocytes. The objectives of this study were 1) to examine the expression of TLRs in equine bronchial epithelial cells (EBEC) and blood monocytes in untrained and trained horses; 2) to stimulate EBEC and monocytes in vitro with TLR ligands, in order to mimic bacterial/viral infections; 3) to compare the cytokine production of EBEC and monocytes in untrained and trained horses. Bronchial biopsies were taken from 8 horses during lower airway endoscopy at rest and 24 hours after a standardized exercise test (SET). Bronchial epithelial cells were grown in vitro and activated with TLR ligands. Blood monocytes were collected at rest and after the SET. TLR1-TLR9 expression was evaluated via real-time PCR and cytokine production was measured via ELISA. TLR3 and TLR4 expression was modified by training. The expression of TLR2, TLR7 and TLR8 was modified only by strenuous exercise in trained horses. Training had local immuno-suppressive effects shown by a decreased production of TNF-alpha and IFN-beta in EBEC in response to TLR2 and TLR3 ligands. Training also caused a systemic pro-inflammatory response evidenced by increased production of TNF-alpha in monocytes in response to TLR2 and TLR4 ligands. These findings suggest that training and strenuous exercise in trained subjects may result in an increased susceptibility of the lower airway to infections associated with systemic inflammation. [less ▲]

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See detailModeling of strain localization around the radioactive waste disposal galleries
Salehnia, Fatemeh ULg; Charlier, Robert ULg; Levasseur, Séverine ULg

in Coupled Phenomena in Environmental Geotechnics (2013)

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See detailShort overview of global sustainable development indicators
Paveliuc Olariu, Codrin ULg; Burny, Philippe ULg

in Bran, Florina; Ioan, Ildiko; Maruntelu, Tudor-George (Eds.) et al 5th International Conference "Ecological performance in a competitive economy", Bucharest 7-8 March 2013 : proceedings (2013)

In this paper, a bibliographical review of current sustainable development indicators used at regional and global level is presented. This review was undertaken as part of an analysis on the status quo on ... [more ▼]

In this paper, a bibliographical review of current sustainable development indicators used at regional and global level is presented. This review was undertaken as part of an analysis on the status quo on how to measure sustainable development and the ways to quantify results regarding set goals. Its purpose is to establish if the results of the actions taken in order to achieve the targets of the Millennium Development Goals (MDG) and those that will be taken in order to reach the target of the Sustainable Development Goals (SDG). [less ▲]

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See detailFirst record of Demosponge spicules in a late Devonian stromatoporoid basal skeleton (Frasnian, Belgium).
Reitner; Da Silva, Anne-Christine ULg; Kershaw et al

in Abstracts: Ninth world sponge conference 2013 (2013)

Detailed reference viewed: 23 (2 ULg)
See detailRegular Modes in Rapidly Rotating Stars
Pasek, Mickael; Georgeot, Bertrand; Lignières, François et al

in Suárez, Juan Carlos; Garrido, Rafael; Balona, Luis A. (Eds.) et al Stellar Pulsations (2013)

Rapid rotation has to date prevented reliable mode identification in most intermediate to massive pulsating stars. In this contribution we show how an asymptotic method for pressure modes predicts regular ... [more ▼]

Rapid rotation has to date prevented reliable mode identification in most intermediate to massive pulsating stars. In this contribution we show how an asymptotic method for pressure modes predicts regular frequency spacings in the spectrum of rapidly rotating stars. We give a semi-analytical formula for these spacings that is in good agreement with numerically computed high-frequency modes. This should help to extract from observed spectra important information on the structure of rapidly rotating stars. [less ▲]

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See detailDu destin des archives en Islam. Analyse des données et éléments de réponse
Bauden, Frédéric ULg

in Aigle, Denise; Péquignot, Stéphane (Eds.) La Correspondance entre souverains, princes et cités-états. Approches croisées entre l'Orient musulman, l'Occident et Byzance (XIIIe-début XVIe siècle) (2013)

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See detailA prospective study of cardiac valvular status in patients treated with cabergoline for endocrine disease
VROONEN, Laurent ULg; LANCELLOTTI, Patrizio ULg; Tome, M et al

in Symposium "Perspectives in Endocrinology" - Congresses Highlights 2012: ECE Firenze, ENDO Houston, ESPE Leipzig, SFE Toulouse, IWMEN Liège (2013)

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See detailImpact of different scenarios related to the new Common Agricultural Policy on farm income in Wallonia
Burny, Philippe ULg; Terrones Gavira, François ULg; Habran, Maxime ULg

in Lorencowicz, Edmund; Uziak, Jacek; Huyghebaert, Bruno (Eds.) VI International Scientific Symposium "Farm Machinery and Processes Management in Sustainable Agriculture" : Symposium Proceedings (2013)

The Common Agricultural Policy (CAP) has been reformed several times since the treaty of Rome in 1958. For the period 2014-2020 at the European level, a new CAP had to be agreed upon by the 27 Member ... [more ▼]

The Common Agricultural Policy (CAP) has been reformed several times since the treaty of Rome in 1958. For the period 2014-2020 at the European level, a new CAP had to be agreed upon by the 27 Member States and the EU parliament. Discussions were launched in 2010 and several proposals were made. In Belgium, as agricultural policy is regionalized, the Walloon Minister for Agriculture decided to support academic research in order to assess the possible impact of different scenarios on farm income, and so to help the regional authorities to take decisions when the EU legislation would be adopted, giving a large set of possibilities to the Members States/regions. So, different scenarios were defined with the partners of the administration, including farmers' unions, and their impacts on farm income were calculated. [less ▲]

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See detailActive network management: planning under uncertainty for exploiting load modulation
Gemine, Quentin ULg; Karangelos, Efthymios ULg; Ernst, Damien ULg et al

in Proceedings of the 2013 IREP Symposium - Bulk Power Systems Dynamics and Control - IX (2013)

This paper addresses the problem faced by a distribution system operator (DSO) when planning the operation of a network in the short-term. The problem is formulated in the context of high penetration of ... [more ▼]

This paper addresses the problem faced by a distribution system operator (DSO) when planning the operation of a network in the short-term. The problem is formulated in the context of high penetration of renewable energy sources (RES) and distributed generation (DG), and when flexible demand is available. The problem is expressed as a sequential decision-making problem under uncertainty, where, in the first stage, the DSO has to decide whether or not to reserve the availability of flexible demand, and, in the subsequent stages, can curtail the generation and modulate the available flexible loads. We analyze the relevance of this formulation on a small test system, discuss the assumptions made, compare our approach to related work, and indicate further research directions. [less ▲]

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See detailLes besoins sociaux et économiques de la collectivité dans le droit de l’aménagement du territoire et de l’urbanisme
Pâques, Michel ULg; Donnay, Luc ULg; Vercheval, Cécile ULg

in Delnoy, Michel; Born, Charles-Hubert; Van Damme, Nathalie (Eds.) Le droit de l’aménagement du territoire et de l’urbanisme, 50 ans après la loi organique (2013)

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See detailProducción y circulación de óxidos de hierro por sociedades cazadoras-recolectoras-pescadoras del periodo arcaico en el norte de Chile
Salinas, Hernan; Salazar, Diego; Salomon, Hélène ULg et al

in El pasado tecnologico, cambio y persistencia (2013)

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See detailCost, return analysis and constraints in livestock production and marketing in Hai Duong, Vietnam
Le Thi Minh, Chau ULg; Lebailly, Philippe ULg; Nguyen, Tuan Son

in Kovacevic, Dusan (Ed.) IV International Symposium "Agrosym 2013" : Proceedings (2013)

The study, using the survey data from 145 livestock production households, showed that livestock contributed significant parts to the households’ income. Given a production unit, the high investment in ... [more ▼]

The study, using the survey data from 145 livestock production households, showed that livestock contributed significant parts to the households’ income. Given a production unit, the high investment in inputs and the considerable experience in production and marketing created higher income for the livestock-based group than that for the non livestock-based group. However, the farmers perceived some constraints relating to both production and marketing. The result from the Garrett’s ranking technique presented the ranking position of constraints, respectively included the livestock disease, the limited credit access, the high and rapid increase in feed price, the high volatility of output price, and the insufficiency of market information and weak bargaining power. [less ▲]

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See detailDescribing the “elusive”: a new perception of the practices and the resources of illuminators in the North of Europe from the fourteenth to the sixteenth century
Neven, Sylvie ULg

in Saunders, David; Spring, Marika; Meek, Andrew (Eds.) Renaissance Workshop (2013)

Due to their trade value, a huge range of artistic materials are documented and recorded in historical written sources. However, certain substances are not registered in these archives because they did ... [more ▼]

Due to their trade value, a huge range of artistic materials are documented and recorded in historical written sources. However, certain substances are not registered in these archives because they did not have a market value. This is especially the case for vegetal species which artists easily found in nature and used for their colouring principles, like anthocyanin colorants. As they are characterized by a great sensitivity to the slightest changes in pH and as they are highly unstable in ordinary daylight, these colorants were not frequently used in the dyeing of quality materials or in painting. Up until now, they have been mainly considered as being used in a domestic context, for the dyeing of everyday clothes. Moreover, after ageing, the plant species are difficult to identify with currently-used analytical methods. We therefore intend to bring to light these « elusive » substances through the close examination of an original and primordial source : artistic recipe books. Our previous researches have highlighted that these books not only describe these organic colorants, but that they also indicate their use in illumination. From the 14th to the 16th century, hundreds of recipe books containing information relating to these colorants were produced. They describe both their preparation, their diverse applications and the required conditions for their conservation. These recipe books also inform us about the different hues obtained from these colorants. Our study will involve analysing the significance of these organic substances as well as (re)defining their use with a view to increasing our knowledge of historical artistic practices and materials. Furthermore, it could also help to identify specific artistic productions or workshops. Finally, it would be possible to learn more about the status of artists, their working conditions and their training. [less ▲]

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See detailSymposium - Echec scolaire, redoublement ou décrochage : les croyances des enseignants sous la loupe…
Fagnant, Annick ULg; Poncelet, Débora

in Congrès international. Actualité de al recherche en éducation et en formation. AREF 2013 (2013)

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See detailCatalytic layer for PEMFC based on carbon xerogels
Deschamps, Fabien ULg; Traina, Karl; Pirard, Jean-Paul ULg et al

in Proceedings of the Fundamentals and Development of Fuel cells 2013 conference (2013)

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See detailL’imaginaire linguistique des historiens de la littérature, en France et en périphéries
Provenzano, François ULg

in Moussa, Sarga (Ed.) Le XIXe siècle et ses langues (2013)

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See detailSpicules or no spicules in Devonian stromatoporoids, that’s the question?
Da Silva, Anne-Christine ULg; Kershaw; Boulvain, Frédéric ULg et al

in Whalen; Osadetz; Richards (Eds.) et al IGCP-580/596, Geophysical and Geochemical techniques : a window on the Paleozoic world, Abstract book (2013)

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See detailA journey across scales, borders and data sources: minimum commute distance (MCD) analysis of home-to-work trips in Belgium
Teller, Jacques ULg; Cools, Mario ULg

in Hesse, Markus; Caruso, Geoffrey; Gerber, Philippe (Eds.) et al Proceedings of the BIVEC-GIBET Transport Research Days 2013 (2013)

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See detailContrast enhanced nanoCT for 3D quantitative and spatial analysis of in vitro manufactured extracellular matrix in metallic tissue engineering scaffolds
Sonnaert, Maarten; Papantoniou, Ioannis; Geris, Liesbet ULg et al

in Abstract book User Meeting Bruker MicroCT 2013 (2013)

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See detailLe cas des systèmes hypothétiques coordonnés du grec ancien
Denizot, Camille ULg

in Bodelot, Colette; Gruet-Skrabalova, Hana; Trouilleux, François (Eds.) Morphologie, syntaxe et sémantique des subordonnants (2013)

On rencontre, dans l’Iliade et chez Hérodote, principalement, des systèmes hypothétiques où la protase (introduite par εἰ) et l’apodose sont en outre coordonnés par μέν / δέ. Ces occurrences paradoxales ... [more ▼]

On rencontre, dans l’Iliade et chez Hérodote, principalement, des systèmes hypothétiques où la protase (introduite par εἰ) et l’apodose sont en outre coordonnés par μέν / δέ. Ces occurrences paradoxales peuvent être expliquées de manière satisfaisante si on sépare soigneusement le niveau sémantique (où l’hypothèse peut être expliquée) et le niveau syntaxique (où le caractère non subordonné de la protase peut être démontré) ; cette explication permet de décrire les emplois non subordonnants de εἰ sans avoir à les faire dériver d’une structure subordonnée. [less ▲]

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See detailEstimation of dominance variance with sire-dam subclass effects in a crossbred population of pigs
Dufrasne, Marie ULg; Jaspart, Véronique; Wavreille, José et al

in Book of Abstract of the 64th Annual Meeting of the European Association of Animal Science (2013)

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See detailCrystal chemistry of a near end-member triplite, Mn2+2(PO4)F, from Codera valley (Sondrio province, Central Alps, Italy)
Vignola, P; Gatta, D; Hatert, Frédéric ULg et al

in PEG2013 – 6th International Symposium on Granitic Pegmatites, Abstract book (2013)

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See detailLa typologie des objets sémiotiques dans le Résumé. Exercice de lecture
Badir, Sémir ULg

in Badir, Sémir; Cigana, Lorenzo (Eds.) Reading the Résumé of a Theory of Language / Lire le Résumé d'une théorie du langage (2013)

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See detailThe role of tyrosin kinase inhibitors in a MEN2B patient with metastatic medullary thyroid carcinoma
Tome, M; Tomas, M-H; VROONEN, Laurent ULg et al

in Symposium "Perspectives in Endocrinology" - Congresses Highlights 2012: ECE Firenze, ENDO Houston, ESPE Leipzig, SFE Toulouse, IWMEN Liège (2013)

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See detailBilinguisme et digraphisme dans le codex miscellaneus de Montserrat
Macedo, Gabriel ULg

in Rochette, Bruno; Marganne, Marie-Hélène (Eds.) Bilinguisme et digraphisme dans le monde gréco-romain. L'apport ds papyrus latins. Actes de la table ronde de Liège, 12-13 mai 2011 (2013)

The present paper proposes a codicologic, palaeographic and contextual study of an extraordinary Late Antique book: the Montserrat codex miscellaneus. Dated on palaeographic grounds to the IV century AD ... [more ▼]

The present paper proposes a codicologic, palaeographic and contextual study of an extraordinary Late Antique book: the Montserrat codex miscellaneus. Dated on palaeographic grounds to the IV century AD, this manuscript provides us with evidence of particular interest on bilingualism and digraphism in Byzantine Egypt, for it is the only antique codex containing texts in both Greek and Latin, of both Christian and Secular content, and pertaining to different literary genres, such as rhetoric, hexametric poetry and Christian liturgy. [less ▲]

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See detailImpacts of future floods and low flows on the economy in the Meuse basin
Sinaba, B; Döring, R; Kufeld, M et al

in Dewals, Benjamin; Fournier, Maïté (Eds.) Transboundary Water Management in a Changing Climate (2013)

Climate change in Western Europe is projected to result in more humid winters and drier summers. Further, the sverities of floods and low flows are assumed to increase in the future. The impacts of these ... [more ▼]

Climate change in Western Europe is projected to result in more humid winters and drier summers. Further, the sverities of floods and low flows are assumed to increase in the future. The impacts of these events could lead to adverse consequences on the economy. Given this framework, within the AMICE project, the impacts of future floods and low flow will be analyzed. A flood risk analysis in the Meuse basin is conducted taking into account future climate scenarios. Further, the impacts of future droughts and low flows are analyzed for the economic sectors energy production, agriculture and navigation. [less ▲]

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See detailIn ovo injection of tolbutamide alters the post-hatch performance and insulin sensitivity of broiler chickens
Franssens, L.; Lesuisse, J.; Wang, Y. et al

in Proceedings of the 6th Combined Workshop on Fundamental Physiology and Perinatal Development in Poultry (2013)

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See detailBuilding a Construction-Based Treebank of Late Egyptian. The Syntactic Layer in Ramsès
Polis, Stéphane ULg; Rosmorduc, Serge

in Polis, Stéphane; Winand, Jean (Eds.) Texts, Languages & Information Technology in Egyptology. Selected papers from the meeting of the Computer Working Group of the International Association of Egyptologists (Informatique & Égyptologie), Liège, 6-8 July 2010 (2013)

This paper reports on the construction-based Treebank currently under development in the frame-work of the Ramses Project, which aims at building a multifaceted annotated corpus of Late Egyptian texts. We ... [more ▼]

This paper reports on the construction-based Treebank currently under development in the frame-work of the Ramses Project, which aims at building a multifaceted annotated corpus of Late Egyptian texts. We describe the specifications that have been implemented and we introduce the syntactic formalism and the related representation format that are used for the syntactic annotation. Further-more, the annotation scheme is discussed with particular attention paid to its evolutionary nature. Finally, we explain the methods as well as the annotating tool, called SyntaxEditor; we conclude by addressing the question of forthcoming developments, especially the search engine and a context-sensitive parser. [less ▲]

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See detailEffects of aging on task- and stimulus-related attention during a working memory task
Kurth, Sophie ULg; Hagelstein, Catherine ULg; Collette, Fabienne ULg et al

in Proceedings of the Annual Meeting of the Belgian Association for Psychological Sciences (2013)

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See detailThe phosphate minerals assemblages from Jocão pegmatite, Minas Gerais, Brazil.
Baijot, Maxime ULg; Hatert, Frédéric ULg; Philippo, S

in PEG2013 – 6th International Symposium on Granitic Pegmatites, Abstract book, (2013)

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See detailExperimental assessment of the effect of the real flame emissivity for steel elements engulfed into fire
Tondini, Nicola; Vassart, Olivier; Franssen, Jean-Marc ULg

in Babrauska, Vytenis; Grayson, Stephen; Hirschler, Marcelo (Eds.) et al Proceedings of the Fire and Materials 2013 Conference (2013)

This paper presents the results of an experimental campaign performed to assess the effect of the flame emissivity for steel members engulfed into fire. In detail, two sizes of circular steel tubes were ... [more ▼]

This paper presents the results of an experimental campaign performed to assess the effect of the flame emissivity for steel members engulfed into fire. In detail, two sizes of circular steel tubes were engulfed into pool fires of two different diameters. Two fuels were used and for both fuels tests without column (used as comparison with existing localised fire models) and with column were performed. The temperature of the column and of the flames were measured at different heights. The width of the flame was also measured and used to calculate the emissivity of the flame the value of which was employed in numerical simulations in order to predict the evolution of the temperature of the steel column. Comparison with numerical analyses where the recommended values of the Eurocode were used is also shown. [less ▲]

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See detailEarthquakes, Landslides, Dams and Reservoirs in the Tien Shan, Central Asia
Havenith, Hans-Balder ULg; Abdrakhmatov, Kanatbek; Torgoev, Isakbek et al

in Margottini, Claudio; Sassa, Kyoji (Eds.) Landslide Science and Practice (2013)

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See detailEn quoi un espace en ligne peut-il aider les étudiants de premier bachelier à résoudre des problèmes de physique?
Jacquet, Maud ULg; Georges, François ULg; Gourdange, Brigitte ULg et al

in Colloque scientifique international portant sur les TIC en éducation : bilan, enjeux actuels et perspectives futures (2013)

L’article présente un dispositif mis en place à l’Université de Liège (ULg, Belgique) pour faire face aux échecs massifs des étudiants de première année (branches scientifiques) dans le cours de physique ... [more ▼]

L’article présente un dispositif mis en place à l’Université de Liège (ULg, Belgique) pour faire face aux échecs massifs des étudiants de première année (branches scientifiques) dans le cours de physique. En soutien aux activités conventionnelles, un site Web propose à ces étudiants de résoudre en ligne des problèmes de physique en décomposant leur processus de résolution et en prenant connaissance de feed-back détaillés, de façon à améliorer tant leur compréhension de la mécanique (matière abordée en début de première année) que la résolution de problèmes en tant que telle. La description du dispositif sera suivie de l’analyse des données d’usage par plus de neuf cents étudiants ainsi que des données subjectives d’avis de ces étudiants quant à l’intérêt du dispositif de 2009. Sur base de ces constats, nous résumons les pistes d’amélioration et présentons, de façon très illustrée, les régulations apportées en 2011 et 2012. L’accent est résolument placé sur le volet « feed-back », très apprécié des étudiants : un diagnostic individuel de la phase de résolution qui leur pose le plus problème, de nombreuses vidéos de résolution guidée et des animations qui permettent à chacun de revenir sur les concepts les plus difficiles à comprendre. [less ▲]

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See detailRotation Effects as Possible Responsible for the Surface Effects on the Sun and Solar-Type Stars
Suárez, J. C.; Goupil, M. J.; Reese, Daniel ULg et al

in Suárez, Juan Carlos; Garrido, Rafael; Balona, Luis A. (Eds.) et al Stellar Pulsations (2013)

One of the main sources of uncertainty in the asteroseismic models of the Sun and solar-like stars is the poor match between predicted oscillation frequencies and observed ones in the very high frequency ... [more ▼]

One of the main sources of uncertainty in the asteroseismic models of the Sun and solar-like stars is the poor match between predicted oscillation frequencies and observed ones in the very high frequency domain. Today, effects of turbulence, diffusion, etc., i.e., the so-called "surface effects" are signaled as possible responsible for such a discrepancy. We show that the effect of the stellar deformation due to rotation is of the same order or even larger than these effects. We show that rotation effects, are important for the asteroseismic analysis of the Sun and solar-like stars and they cannot be neglected when modeling such stars. [less ▲]

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See detailLes industries à pointes foliacées du Paléolithique supérieur ancien dans le Nord-Ouest de l’Europe : le Lincombien-Ranisien-Jerzmanowicien
Flas, Damien ULg

in Bodu, Pierre; Chehmana, Lucie; Klaric, Laurent (Eds.) et al Le Paléolithique supérieur ancien de l’Europe du Nord-Ouest. Réflexions et synthèses à partir d’un projet collectif de recherche sur le centre et le sud du Bassin parisien (2013)

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See detailEvaluation de la durabilité des productions porcines en Wallonie : développement d'un outil de modélisation
Picron, Pascale ULg; Boudry, Christelle ULg; Dochain, Denis et al

in 45èmes Journées de la Recherche Porcine (2013)

Garantir la durabilité d’une filière de production implique d’évaluer son impact sur les trois dimensions du développement durable : (1) maîtrise des impacts sur l’environnement, (2) viabilité économique ... [more ▼]

Garantir la durabilité d’une filière de production implique d’évaluer son impact sur les trois dimensions du développement durable : (1) maîtrise des impacts sur l’environnement, (2) viabilité économique, (3) attentes sociétales des éleveurs, des citoyens et des consommateurs. Cette recherche s’inscrit dans le cadre de la révision, par les autorités publiques de Wallonie (Belgique), des critères minimaux permettant la reconnaissance de la qualité différenciée axés sur les 3 piliers de la durabilité. Elle consiste à développer un outil informatique de modélisation mathématique du fonctionnement technico-environnemental de la production porcine et de ses impacts socio-économiques. Le programme est développé dans Matlab. Le modèle s’articule autour des différentes composantes des systèmes de production selon le paradigme orienté-objet. Les nouveaux critères de différenciation qui définiront de nouveaux labels axés sur des attributs de durabilité en constituent les variables motrices : taille de l’exploitation, origine des aliments et des matières premières, logement, indépendance énergétique, effluents, etc. Les impacts sont relevés à chaque étape de production jusqu’à la sortie du porc sur pied de la ferme selon la norme « Analyse de Cycle de Vie » (ACV). L’évaluation environnementale utilise des modèles mécanistiques de flux de composés chimiques, convertis en indicateurs ACV. L’analyse de la dimension sociale s’appuie sur une base de données intégrée, comprenant le temps de travail. Enfin, un modèle économique attestera du dernier volet. L’outil finalisé permettra de prédire les conséquences de choix opérationnels liés aux critères de qualité différenciée au niveau d’une exploitation. [less ▲]

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See detailReprésentation de l'oral et structures syntaxiques dans la prose de la _Queste del saint Graal_ (1225-1230)
Glikman, Julie; Mazziotta, Nicolas ULg

in Lagorgette, Dominique; Larrivée, Pierre (Eds.) Représentations du Sens Linguistique 5 (2013)

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See detailA la recherche d’une doctrine stratégique : L’invasion de la Belgique en 1914 à la lumière de l’environnement intellectuel des stratèges belges depuis 1839
Bechet, Christophe ULg

in Cochet, François (Ed.) Expériences combattantes XIXe - XXIe siècles. Tome 3 : Les environnements du combattant (2013)

L’environnement intellectuel des stratèges belges présenté dans cet article ne doit donc pas être considéré comme un corpus doctrinal précis mais plutôt comme une série d’interrogations géopolitiques ... [more ▼]

L’environnement intellectuel des stratèges belges présenté dans cet article ne doit donc pas être considéré comme un corpus doctrinal précis mais plutôt comme une série d’interrogations géopolitiques propres à l’espace belge, son statut de neutralité et ses fortifications. Ainsi, les choix posés par le Roi Albert I depuis l’ordre de mobilisation le 31 juillet 1914 jusqu’au repli de l’armée belge sur Anvers dans la nuit du 18-19 août peuvent être mis en parallèle avec les divers débats, polémiques ou études stratégiques antérieurs concernant la défense de la Belgique. Au cours de ces trois premières semaines de conflit, le souverain belge est en effet confronté à trois dilemmes majeurs : 1)Quand mobiliser ? Faut-il mobiliser avant la France et l’Allemagne ? 2) Quelle attitude adopter après la phase de mobilisation ? Faut-il concentrer les troupes vers la frontière menacée ou au centre du pays ? 3) En cas d’invasion, la jonction de l’armée belge avec une armée de secours est-elle prioritaire ? [less ▲]

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See detailModélisation hydraulique detaillée d’inondations extrêmes sur un tronçon transnational de la Meuse
Dewals, Benjamin ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Evènements extrêmes d’inondation : de l’étude de l’aléa à la gestion du risque pour les ouvrages hydrauliques (2013)

Extreme floods of the river Meuse were simulated based on a detailed 2D unsteady hydraulic model. As part of a coordinated transnational modeling program, the study area considered here extends from ... [more ▼]

Extreme floods of the river Meuse were simulated based on a detailed 2D unsteady hydraulic model. As part of a coordinated transnational modeling program, the study area considered here extends from Ampsin (Belgium) to the Belgian-Dutch border. The results of the present simulations are passed as upstream boundary condition to a second hydraulic model simulating the same flood scenarios in the Meuse in the Netherlands. In the simulations discussed here for the Belgian part of the Meuse, high accuracy and high resolution data were used to represent the main riverbed and the urbanized floodplains. The operation of all influencing mobile dams was represented in the model. The considered flood scenarios include the 100-year flood in the present situation (Q100), as well as two more extreme floods: Q100 + 15 % and Q100 + 30 %. These values correspond to return periods of the order of, respectively 300 and 1000 years in the present climate; but, according to a transnational climate change scenario in the Meuse basin, they may also be considered as estimates of the 100-year flood in 2050 and 2100. The computations have shown a very limited damping of the flood wave in the study area, not exceeding approximately 1 % of the peak discharge for Q100 and Q100 + 15 %, and reaching about 3 % for Q100 + 30 %. Compared to Q100, increases in the flood levels for Q100 + 15 % and Q100 + 30 % are, respectively, in the ranges 0.5-0.9 m and 1.0-1.8 m. Comparisons with the results from previous steady simulations revealed discrepancies not exceeding 5 cm for Q100 and Q100 + 15 %, and reaching a maximum of approximately 30 cm for Q100 + 30 %. Hence, from the perspective of the variation in peak discharge and flood levels, the study concludes that running the hydraulic model in steady mode is reasonable; although some differences occur in terms of inundation extents. The 2D unsteady model constitutes also a tool of primary interest, which is readily available to design and evaluate protection measures for flood-prone areas such as in the city of Liege. [less ▲]

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See detailInverse soil parameter identification of an earth and rockfill dam by genetic algorithm optimization
Vahdati, Pooya; Levasseur, Séverine ULg; Mattsson, Hans et al

in Sharing Experience for Safe and Sustainable Water Storage (2013)

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See detailDepositional facies settings and geochemical proxies of Late Devonian sequences in northwestern Thailand.
Konighsof; Da Silva, Anne-Christine ULg; Suttner et al

in ICPSEA3 2013: The 3rd International Conference on the Palaeontology of South-East Asia. Abstract book (2013)

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See detailDes guerres contre l’anarchie : constructions idéologiques à la cour de France au temps des premières Guerres d’Italie (1494–1525)
Dumont, Jonathan ULg

in Mazauric, Simone (Ed.) Écrire la guerre, écrire la paix. 136e Congrès national des Sociétés historiques et scientifiques, Perpignan 2011 (2013)

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See detailEstetrol: a new fetal estrogen with antioxidative and neuroprotective activity in the newborn
Tskitishvili, Ekaterine ULg; Nisolle, Michelle ULg; Noël, Agnès ULg et al

in Estetrol attenuates neonatal hypoxic-ischemic brain injury (2013)

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See detailMicrocracks-induced damage modelling for transversely isotropic rock
Levasseur, Séverine ULg; Welemane, Hélène; Kondo, Djimédo

in 3rd International Symposium on Computational Geomechanics (ComGeo III) (2013)

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See detailPastoral dynamics in the region of Diffa (Niger) : a descriptive analysis of livestock capital
Laouali, Abdoulkadri ULg; Rouchet, François ULg; Lebailly, Philippe ULg et al

in Dusan Kovacevic, Kovacevic (Ed.) Book of proceedings - Fourth International Scientific Symposium „Agrosym 2013“ (2013)

Located between the desert zone in the North and the Sahelian zon in the South, the Region of Diffa is a pastoral area par excellence in Niger. Breeding, witch a highly diversified livestock, is the ... [more ▼]

Located between the desert zone in the North and the Sahelian zon in the South, the Region of Diffa is a pastoral area par excellence in Niger. Breeding, witch a highly diversified livestock, is the dominant economic activity in the region. It occupied 95% of the population and contributes annually to 55% in the formation of the region gross domestic production. For understanding the pastoral dynamic a survey of 300 households (150 households witch herd sedentary and 150 witch herd mobile) was conducted during the first semester of 2012. The data analysis is performed from a herd of 15,618 animal heads consisting mainly of small ruminants for both sedentary (72%) and mobile (52%). The herd structure (sedentary and mobile) by age and sex shows on the one hand, the males are early and systematically exploited, all species including, and the reproduction is carried out by a core of female spawners more less stable and dominated by young females, on the other hand. Comparative analysis of compositions and structures of the livestock by agro-ecological zone (Pastoral bowls zone; Komadougou River and Lake Chad zones) reveals zonal disparities particularly in the sedentary livestock system. [less ▲]

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See detailUnderstanding rural economy of Kirundo farmers province in north of Burundi
Minani, Bonaventure ULg; Rurema, Déo-Guide; Lebailly, Philippe ULg

in Belgian Association of Agricultural Economists (Ed.) 2013 PHD Workshop 29-31 May Leuven : proceedings (2013)

This objective of this study is to analyze the socio-economic, political and environmental various constraints of farming systems that are on the basis of poverty observed in this area in order to ... [more ▼]

This objective of this study is to analyze the socio-economic, political and environmental various constraints of farming systems that are on the basis of poverty observed in this area in order to formulate realistic strategies for increasing the productivity and profitability of family farming in that province. [less ▲]

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See detailModelling agricultural strategies to protect groundwater resources in the Hesbaye aquifer (Belgium)
Sohier, Catherine ULg; Degré, Aurore ULg

in Fraters, Dico; Kovar, Karel (Eds.) International Interdisciplinary Conference on Land Use and Water Quality, Reducing Effects of Agriculture, The Hague, the Netherlands, 10-13 June 2013 (2013)

Groundwater quality is spoiled by various substances resulting from human activities. In addition to pesticides, one of the most problematic substances is nitrate. Pumping prevention areas are strategic ... [more ▼]

Groundwater quality is spoiled by various substances resulting from human activities. In addition to pesticides, one of the most problematic substances is nitrate. Pumping prevention areas are strategic zones in terms of struggle against diffuse pollution by nitrate. In order to reduce diffuse pollution of waters by nitrate, different strategies of agricultural practices can be implemented. Their impact can be evaluated either by monitoring water quality or using an agro-hydrological model. The advantage of modelling is to be able to test long term impacts of implemented measures and impacts of complementary measures. Using EPICgrid distributed agro-hydrological model, we reproduced the current agricultural practices. We calculated nitrate leaching but also the nitrate stock in the root zone. These results were validated through a comparison with a lot of nitrogen stock measurements. (These measurements are compulsory in the Walloon context.) The nitrate concentration in pumping wells was also used to assess the efficiency of the model. After this calibration phase, we modelled several scenarios of more water-protective agricultural practices. Indeed, the Hesbaye galleries represent an important source of drinking water in the Walloon region, it is therefore highly probable that further mitigation measures are going to be imposed in the pumping prevention area. An increase in the area cultivated with cereals, a strong limitation of mineral fertilisation as well as a conversion to grasslands were tested and combined. The results of these simulations show how some agricultural practices scenarios can lead to an important decrease in diffuse pollution by nitrate. Prospective simulations taking into account possible future climate evolution (global change scenarios) are carried out to assess nitrate concentrations near the groundwater table for the deadlines of the WFD (2015, 2021 and 2027). Due to the transfer time through the vadose zone (more than 20 years in some subregions), it is showed that an increase in groundwater nitrate concentrations will occur, in some areas, until at least 2030 before new agricultural practices can impact positively the groundwater quality. [less ▲]

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See detailLes marbres dans les traités d’architecture français des XVIIe et XVIIIe siècles
Gilles, Isabelle ULg

in Toussaint, Jacques (Ed.) Actes du colloque : Autour des marbres jaspés (2013)

Les traités d’architecture français reflètent parfaitement l’intérêt plus ou moins appuyé pour les marbres tout au long de l’Ancien Régime. De Philibert de l’Orme à Nicolas Le Camus de Mézières, nous ... [more ▼]

Les traités d’architecture français reflètent parfaitement l’intérêt plus ou moins appuyé pour les marbres tout au long de l’Ancien Régime. De Philibert de l’Orme à Nicolas Le Camus de Mézières, nous ferons un rapide tour d’horizon du discours sur les marbres ; discours dans lequel apparaissent des questions de provenance, de couleurs, de mise en œuvre... mais également d’usage. Nous envisagerons ainsi les emplois particuliers des marbres. En effet, dans la théorie architecturale, le choix des matériaux — que la matière soit réelle ou imitée — doit répondre à des principes bien établis, autour des notions de convenance et de bienséance. Le matériau choisi et sa mise en œuvre doivent ainsi correspondre à la fois à la qualité sociale du commanditaire et à l’usage du lieu dans lequel le matériau prend place. L’emploi des marbres nous rappelle encore la dimension « totale » de cette architecture de l’Ancien Régime, pensée et écrite avec soin, dans laquelle tous les éléments œuvrent de concert. [less ▲]

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See detailThe astronomical calibration of the Givetian (Middle Devonian) time scale (Dinant Synclinorium, Belgium).
De Vleeschouwer; Boulvain, Frédéric ULg; Da Silva, Anne-Christine ULg et al

in Whalen; Osadetz; Richards (Eds.) et al IGCP-580/596, Geophysical and Geochemical techniques: a window on the Paleozoic world, Abstract book (2013)

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See detailEntre "bien être" et "bien faire", où va l'ergonomie
Nyssen, Anne-Sophie ULg

in Proceeding du 48 me congrès de la Self (2013)

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See detailUsing agro-hydrology to adapt to climate evolutions
Degré, Aurore ULg; Sohier, Catherine ULg; Bauwens, Alexandra ULg et al

in Dewals, Benjamin; Fournier, Maité (Eds.) Transboundary Water Management in a Changing Climate (2013)

Natural phenomena such as floods, drought, erosion, nitrate leaching and plant growth are influenced by climate change. The Soil - Water Systems division of Gembloux Agro-Bio Tech aims at studying these ... [more ▼]

Natural phenomena such as floods, drought, erosion, nitrate leaching and plant growth are influenced by climate change. The Soil - Water Systems division of Gembloux Agro-Bio Tech aims at studying these phenomena; better understanding processes; modelling them in order to predict their change in the future and to assess their potential consequences. Then, we can propose strategies to adapt to these changes. As an agronomy faculty, we believe that adapting agriculture can play a major role in mitigating climate evolution effects at plot and catchment scales. [less ▲]

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See detailWhither probabilistic security management for real-time operation of power systems ?
Karangelos, Efthymios ULg; Panciatici, Patrick; Wehenkel, Louis ULg

in Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid (IREP), 2013 IREP Symposium (2013)

This paper investigates the stakes of introducing probabilistic approaches for the management of power system’s security. In real-time operation, the aim is to arbitrate in a rational way between ... [more ▼]

This paper investigates the stakes of introducing probabilistic approaches for the management of power system’s security. In real-time operation, the aim is to arbitrate in a rational way between preventive and corrective control, while taking into account i) the prior probabilities of contingencies, ii) the possible failure modes of corrective control actions, iii) the socio-economic consequences of service interruptions. This work is a first step towards the construction of a globally coherent decision making framework for security management from long-term system expansion, via mid-term asset management, towards short-term operation planning and real-time operation. [less ▲]

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See detailAutomatic differentiation between Alzheimer’s Disease and Mild Cognitive Impairment combining PET data and psychological scores
Segovia-Román, Fermín ULg; Bastin, Christine ULg; Salmon, Eric ULg et al

in 3rd International Workshop on Pattern Recognition in Neuroimaging (2013)

In recent years, several approaches to develop computer aided diagnosis systems for dementia have been pro- posed. The purpose of this work is to measure the advantages of using not only brain images as ... [more ▼]

In recent years, several approaches to develop computer aided diagnosis systems for dementia have been pro- posed. The purpose of this work is to measure the advantages of using not only brain images as data source for those systems but also some psychological scores. To this aim, we compared the accuracy rates achieved by systems that use psychological scores beside the image data in the classification step and systems that use only the image data. The experiments show that the formers achieve higher accuracy rates regardless of the procedure carried out to analyze the image data. [less ▲]

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See detailNumerical modeling and digital image correlation strain measurements of coated metal sheets submitted to large bending deformation
Duchene, Laurent ULg; Ben Bettaieb, Amine ULg; Tuninetti Vásquez, Victor ULg et al

in Proceedings of the 16th ESAFORM conference on Material Forming (2013)

The recently developed SSH3D solid-shell element, which is based on the Enhanced Assumed Strain (EAS) and the Assumed Natural Strain (ANS) techniques, is utilized for the modeling of a severe bending ... [more ▼]

The recently developed SSH3D solid-shell element, which is based on the Enhanced Assumed Strain (EAS) and the Assumed Natural Strain (ANS) techniques, is utilized for the modeling of a severe bending sheet forming process. To improve the element's ability to capture the through thickness gradients, a specific integration scheme was developed. In this paper, the performances of this element for the modeling of the T-bent process were assessed thanks to comparison between experimental and numerical results in terms of the strain field at the outer surface of the sheet. The experimental results were obtained by Digital Image Correlation. It is shown that a qualitative agreement between experimental and numerical results is obtained but some numerical parameters should be optimized to improve the accuracy of the simulation predictions. In this respect, the influence of the penalty coefficient of the contact modeling was analyzed. [less ▲]

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See detailOptimized Look-Ahead Trees: Extensions to Large and Continuous Action Spaces
Jung, Tobias ULg; Ernst, Damien ULg; Maes, Francis

in Proc. of IEEE Symposium on Adaptive Dynamic Programming and Reinforcement Learning (ADPRL'13) (2013)

This paper studies look-ahead tree based control policies from the viewpoint of online decision making with constraints on the computational budget allowed per decision (expressed as number of calls to ... [more ▼]

This paper studies look-ahead tree based control policies from the viewpoint of online decision making with constraints on the computational budget allowed per decision (expressed as number of calls to the generative model). We consider optimized look-ahead tree (OLT) policies, a recently introduced family of hybrid techniques, which combine the advantages of look-ahead trees (high precision) with the advantages of direct policy search (low online cost) and which are specifically designed for limited online budgets. We present two extensions of the basic OLT algorithm that on the one side allow tackling deterministic optimal control problems with large and continuous action spaces and that on the other side can also help to further reduce the online complexity. [less ▲]

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See detailThieu Litchi production in Thanh Ha district (Hai Duong province, Vietnam) : producers and extension services strategies
Rouchet, François ULg; Lebailly, Philippe ULg; Ton, Vu Dinh

in Dusan Kovacevic, Kovacevic (Ed.) Book of proceedings - Fourth International Scientific Symposium „Agrosym 2013“ (2013)

The Thanh Ha district (Haï Duong province, North-Vietnam) has a long history of traditional Thanh Ha Thieu litchis cultivar production. However, the price paid to the farmers for this traditional ... [more ▼]

The Thanh Ha district (Haï Duong province, North-Vietnam) has a long history of traditional Thanh Ha Thieu litchis cultivar production. However, the price paid to the farmers for this traditional cultivation has been reducing significantly for more than 10 years. In this communication, recent evolution of Thanh Ha Thieu litchis production and strategies established by producers in order to face the fall in price are studied and a diagnosis of the agricultural extension services involved in Thanh Ha Thieu litchi production is drawn up. Primary data were collected in 2012 through personal interviews and focus groups with multiple stakeholders, authorities and extension organisms and a survey of producers' households made with semi-structured questionnaires. Substantial reduction of litchis production participation in total household incomes was revealed. In parallel, Thieu litchis plantations superficies fall down being converted in favor of new fruit species or in favor of other litchis varieties depending on the production area operating a diversification process. Moreover, progressive abandonment of not converted plantations is marked by plantations cares reduction. In the past five years, all agricultural extension sessions about litchis production have been initiated and organized by the authorities at province and district level collaborating with input supply privat companies. Various inefficiency problems are highlighted such as disequilibrium in training session access, relative trainings uselessness or mismatch between producers' training demand and offer. [less ▲]

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See detailProfiling workers’ activity-travel behavior based on mobile phone data
Liu, Feng; Janssens, Davy; Wets, Geert et al

in Proceedings of the Third International Conference on the Analysis of Mobile Phone Datasets (NetMob) (2013)

Activity-based micro-simulation models typically predict 24-hour activity-travel patterns for each individual in a study area. These patterns reflect the characteristics of the available transportation ... [more ▼]

Activity-based micro-simulation models typically predict 24-hour activity-travel patterns for each individual in a study area. These patterns reflect the characteristics of the available transportation infrastructure and land-use system as well as individuals’ lifestyles and needs. However, the lack of a reliable benchmark to evaluate the generated patterns has been a major concern. To address this issue, we explore the possibility of using mobile phone data to build such a validation measure. Our investigation consists of three steps. First, the daily trajectory of locations, where a user performed activities, is constructed from the mobile phone records. To account for the discrepancy between the movements revealed by the call data and the real traces that the user has made, the daily trajectories are then transformed into travel sequences. Finally, all the inferred travel sequences are classified into typical activity-travel patterns which, in combination with their relative frequencies, define a profile. The established profile represents the activity-travel behavior in the study area, and thus can be used as a benchmark for the validation of the activity-based models. By comparing the benchmark profiles derived from the call data with statistics that stem from activity-travel surveys, the validation potential is demonstrated. In addition, a sensitivity analysis is carried out to assess how the results are affected by the different parameter settings defined in the profiling process. [less ▲]

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See detailTransition et écologisation de l’agriculture en Région Wallonne : trajectoires en Agriculture de Conservation
Stassart, Pierre M ULg; Vankeerberghen, Audrey ULg; Dannevoye, Bastien ULg et al

in van Ypersele, Jean-Pascal; Hudon, Marek (Eds.) Actes 1er Congrès Interdisciplinaire de Développement Durable: Quelle transition pour nos sociétés. Thème 2: Alimentation , Agriculture, Elevage. 101-122 (2013)

Cet article s’intéresse aux trajectoires de transition d’agriculteurs engagés dans le mouvement d'« Agriculture de Conservation des sols » en Région Wallonne (Belgique). L'agriculture de conservation vise ... [more ▼]

Cet article s’intéresse aux trajectoires de transition d’agriculteurs engagés dans le mouvement d'« Agriculture de Conservation des sols » en Région Wallonne (Belgique). L'agriculture de conservation vise à restaurer ou à maintenir la fertilité des sols ainsi qu'à enrayer l'érosion de ces derniers par la mise en œuvre de techniques telles que la réduction du travail du sol (techniques de non-labour), la couverture permanente des sols et les rotations de cultures appropriées. Ce modèle agricole se développe aujourd'hui dans de nombreux pays et gagne peu à peu la reconnaissance d'institutions publiques. L’interprétation du processus de transition vers l’agriculture de conservation reste néanmoins ambiguë, car cette dernière s’inscrit dans des perspectives diverses et parfois contradictoires : initiative technique, économique, agronomique ou encore écologique. Le cadre analytique choisi est celui de la théorie multi-niveaux de la transition, considérant l'agriculture de conservation comme une niche d'innovation « par retrait », se construisant par décrochages successifs du labour en tant qu'institution du régime de l'agriculture conventionnelle. À travers les trajectoires de trois agriculteurs engagés dans des techniques de non-labour, il s'agira de saisir les modalités d'articulation et de désarticulation entre l'agriculture de conservation, d'une part, et le labour et l'agriculture conventionnelle, d'autre part. Cette analyse permettra de comprendre dans quelles perspectives les agriculteurs inscrivent leur pratique de l'agriculture de conservation ainsi que la position qu'ils lui donnent par rapport à l'agriculture conventionnelle. [less ▲]

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See detailFoucon de Candie : microscopie et macroscopie de l'interpolation
Moreno, Paola ULg

in Combes, Annie; Szkilnik, Michelle (Eds.) Le texte dans le texte. L'interpolation médiévale (2013)

Detailed reference viewed: 32 (6 ULg)
See detailMaternal transisition of dietary omega-3 fatty acids: effects on zootechnical performance and health status of the broiler progeny
Koppenol, A.; Franssens, L.; Everaert, Nadia ULg et al

in Proceedings of the 17th European Society of Veterinary and Comparative Nutrition Congress (2013)

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See detailNew mesh generation developments in GMSH
Remacle, Jean-François; Johnen, Amaury ULg; Lambrechts, Jonathan et al

in Actes du 11e Colloque National en Calcul des Structures (CSMA 2013), Giens, France (2013)

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See detailInnovative Learning for Collaborative Design in Ergonomics
Folcher, Viviane; Zreik, Khaldoun; Ben Rajeb, Samia ULg et al

in Stouffs, Rudy; Sariyildiz, Sevil (Eds.) Computation and Performance (2013)

The proposed article deals with introducing collaborative architectural design into the training of ergonomists at the Master 2 level. The collaborative design workshop aims to confront ergonomists with ... [more ▼]

The proposed article deals with introducing collaborative architectural design into the training of ergonomists at the Master 2 level. The collaborative design workshop aims to confront ergonomists with the difficulties any design project involves, and which challenge architects, designers, engineers and so on: collaboration between people with different skills and different expertise; powerful time constraints; need for their work to converge; working together and/or at a distance; sharing documents; decision-making, etc. The article will present a short review of work carried out in the domains of architecture and design, and of the contribution of ergonomics within architectural projects. We shall then present the workshop’s educational aims, and give details of the way it functioned. Finally, observation results will be presented and discussed. [less ▲]

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See detailNonlinear Normal Modes of Nonconservative Systems
Renson, Ludovic ULg; Kerschen, Gaëtan ULg

in Proceedings of the SEM IMAC XXXI Conference (2013)

Linear modal analysis is a mature tool enjoying various applications ranging from bridges to satellites. Nevertheless, modal analysis fails in the presence of nonlinear dynamical phenomena and the ... [more ▼]

Linear modal analysis is a mature tool enjoying various applications ranging from bridges to satellites. Nevertheless, modal analysis fails in the presence of nonlinear dynamical phenomena and the development of a practical nonlinear analog of modal analysis is a current research topic. Recently, numerical techniques (e.g., harmonic balance, continuation of periodic solutions) were developed for the computation of nonlinear normal modes (NNMs). Because these methods are limited to conservative systems, the present study targets the computation of NNMs for nonconservative systems. Their definition as invariant manifolds in phase space is considered. Specifically, a new finite element technique is proposed to solve the set of partial differential equations governing the manifold geometry. [less ▲]

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See detailRécit et interaction : la piste structuraliste
Hurel, Pierre-Yves ULg

in Klein, Annabelle; Collard, Anne-Sophie (Eds.) COMMUNICATION : Regards croisés sur la relation (2013)

Le rapport entre récit et interactivité est régulièrement présenté comme paradoxal : comment une oeuvre peut-elle intégrer la liberté d’un participant extérieur à une histoire prédéterminée ? La recherche ... [more ▼]

Le rapport entre récit et interactivité est régulièrement présenté comme paradoxal : comment une oeuvre peut-elle intégrer la liberté d’un participant extérieur à une histoire prédéterminée ? La recherche y répond en grande majorité par la théorisation d’une narration émergente, qui abandonne le sens fort du récit. Nous y répondons par une nouvelle approche, nourrie par les thèses structurales – dont nous démontrons l’actualité et la pertinence dans le champ de recherche qui nous occupe. Ceci nous permettra de (re)définir l’objet et de comprendre sa relation au public. Certains webdocumentaires, jeux vidéo, jeux de rôle, hypertextes ou films interactifs font partie d’un même type de narration : le récit interactif. [less ▲]

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See detailLe rôle du commerce frontalier des produits alimentaires avec le Rwanda dans l'approvisionnement des ménages de la ville de Bukavu (province du Sud-Kivu)
Vwima Ngezirabona, Stany ULg; Mastaki, Jean-Luc; Lebailly, Philippe ULg

in Brot, Jean (Ed.) Les Cahiers de l'Association Tiers-Monde n° 28-2013 : XXVIIIes Journées sur le Développement "Mobilités internationales, déséquilibres et développement : vers un développement durable et une mondialisation décarbonée ?" (2013)

Ce travail s'inscrit dans un cadre géographique regroupant deux pays (RDC et Rwanda) appartenant à la Communauté Économique des Pays des Grands Lacs (CEPGL) avec le Burundi. Le commerce des produits ... [more ▼]

Ce travail s'inscrit dans un cadre géographique regroupant deux pays (RDC et Rwanda) appartenant à la Communauté Économique des Pays des Grands Lacs (CEPGL) avec le Burundi. Le commerce des produits alimentaires entre population transfrontalière est une réalité: Elle est facilitée par un ensemble d'accords et certaines pratiques de proximité qui n'ont jamais été mises en cause, même pendant les périodes des guerres. Les flux importants de produits alimentaires enregistrés lors de la traversée du corridor frontalier entre Bukavu (RDC) et le district de Rusizi (Rwanda), les difficultés et risques auxquels les petits commerçants et les ménages sont soumis, constituent des éléments qui ont guidé le choix de l'approche conceptuelle. Lors de la traversée des frontières, on peut se rendre compte que la ville de Bukavu et le district de Rusizi (Rwanda) ont des fonctions bien réparties. Alors que Bukavu fonctionne comme un grand centre de consommation, le district de Rusizi s'est positionné stratégiquement comme une ville entrepôt (Soule et Musila, 2005). Ces approvisionnements à partir de l'étranger solidifient encore la dépendance alimentaire de la province du Sud-Kivu en général et la ville de Bukavu en particulier. Ce problème mérite une étude particulière et a guidé aussi le choix de ce travail. Le choix de l'approche conceptuelle de cette étude a été aussi motivé par le souci d'étalonner la contribution du commerce frontalier à la paix, à la lutte contre la pauvreté et à la sécurité alimentaire. Ceci constitue des réponses à plusieurs préoccupations de développement et d'intégration régionale. Dans ce cadre, plusieurs auteurs, comme Johnson et al. (2009), Cling (2006), Tegera et al. (2007), Masato Hayashikawa (2009), ont déjà montré qu'il existe un lien entre commerce, développement et lutte contre la pauvreté. Divers programmes sous-régionaux (CEPGL), régionaux (COMESA, CIRGL), internationaux (Banque mondiale) ainsi que diverses ONGs internationales (Alert International, DFID) s'intéressent à cette problématique. [less ▲]

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