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See detailRaymond Lemaire et la rénovation urbaine dans les années 1960-1970: entre théorie et pratique de la conservation
Houbart, Claudine ULg

in Aveta, Aldo, Di Stefano, Maurizio (Ed.) Roberto Di Stefano. Filosofia della Conservazione e prassi del Restauro (2014)

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See detailAssessment of sedentary and mobile pastoralism dynamics in the region of Diffa (Niger)
Laouali, Abdoulkadri ULg; Yamba, Boubacar; Lebailly, Philippe ULg

in Dusan, Kovacevic (Ed.) Book of proceedings - Fifth International Scientific Symposium „Agrosym 2014“ (2014)

This paper builds on the article entitled “Pastoral dynamics in the Region of Diffa: descriptive analysis of livestock capital” published in the Proceedings Agrosym 2013. In view of its agro ecological ... [more ▼]

This paper builds on the article entitled “Pastoral dynamics in the Region of Diffa: descriptive analysis of livestock capital” published in the Proceedings Agrosym 2013. In view of its agro ecological characteristics, Diffa is a largely pastoral region in Niger. Livestock practiced by more than 95% of the population, is the dominant economic activity of local communities. It contributes around 55% of the annual GDP of the Region. To assess and understand the pastoral dynamics in the Region, a survey involving 300 households (150 households with sedentary herds and 150 households with mobile herds) was conducted during the first half of 2012. The paper attempts to capture, from the responses of households surveyed, livestock trends in the Region of Diffa over a period of six years (2007 to 2012). Analysis of results, at least regarding households who provided comprehensive responses, shows reduced livestock over the relevant period with variances according to species. Data cross analysis highlights the occurrence of recurrent fodder deficits, attributable to a series of annual rainfall deficits as well as animal diseases as the main cause of reduced sizes of the herds of households surveyed. [less ▲]

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See detailNanocomposite fiber reinforced mortars
Coppola, Bartolomeo; Di Maio, Luciano; Courard, Luc ULg et al

in Proceedings of the International Conference on Composites/Nano Engineering (2014)

The use of fibers to reinforce a brittle material is an extensively studied application. In the field of cementitious materials a wide range of fibers have been investigated, from natural to synthetic ... [more ▼]

The use of fibers to reinforce a brittle material is an extensively studied application. In the field of cementitious materials a wide range of fibers have been investigated, from natural to synthetic fiber (wood, cellulose, carbon, glass, polypropylene) in order to achieve several purposes. Nowadays there is a continuing effort to take advantage of recent advances in nanotechnology, in the polymer and fiber industry. Nanoclays are some of the most affordable materials that have shown promising results in nanocomposite polymers. They are characterized by a “platelet” structure with average dimension of 1 nm thick and 70 to 150 nm wide. This work is aimed at studying the different behavior of fiber reinforced mortars, containing nanocomposite polymeric fibers. [less ▲]

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See detailExperts’ opinions concerning the minimum content of a national household travel survey
Cools, Mario ULg; Armoogum, Jimmy; Diana, Marco

in Proceedings of the 10th International Conference on Transport Survey Methods (2014)

Although an extensive literature is available concerning the design of travel surveys, fewer research initiatives have been carried out to determine the content of the survey itself. The objective of the ... [more ▼]

Although an extensive literature is available concerning the design of travel surveys, fewer research initiatives have been carried out to determine the content of the survey itself. The objective of the present work is to identify such minimum set through a survey (MTSQ – Mini-Travel Survey Questionnaire) targeted to experts in this field. Moreover, it is investigated whether unanimity exists in the experts’ opinions concerning the importance of various types of questions and whether regional and/or professional differences exist. The MTSQ survey was successfully completed by 81 respondents in October-November 2012, mainly from Europe and North America. The study identified the most important questions, which should form the core of any NHTS. This list is especially useful for countries which do not yet have implemented a NHTS, and for defining the set of questions in case a harmonized household travel survey spanning across different countries will be initialized. Secondly, the paper investigated whether unanimity exists in the experts’ opinions. Our analyses clearly pinpointed different evaluations according to the experts’ characteristics, thus it could be concluded that unanimity is certainly not complete. Thus, whenever developing standards for travel surveys these differences should be taken into account, according to both the prospective data users the intended data usages. Especially the differences with respect to the regional context (North-American versus European), and involvement with the NHTS should be acknowledged. [less ▲]

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See detailLOGIC : Un service GeoWeb d'aide à la décision et à la coopération des élus en matière d'implantations commerciales
Jaspard, Mathieu ULg

in 1ère Conférence Intercontinentale d'Intelligence Territoriale "Interdisciplinarité dans l'aménagement et développement des territoires" (2014)

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See detailExpansion urbaine et risques hydrologiques : cas de Butembo (RD Congo)
Sahani, Muhindo; Ozer, Pierre ULg; Moeyersons, Jan

in Ozer, André; Ozer, Pierre (Eds.) Colloque International "La Géographie Physique et les Risques Naturels" - Livre de résumés (2014)

Butembo constitue un cas typique de zone urbaine en région tropicale humide rencontrant une explosion démographique exceptionnelle. L’exode vers Butembo pour fuir l’insécurité dans la sous-région a ... [more ▼]

Butembo constitue un cas typique de zone urbaine en région tropicale humide rencontrant une explosion démographique exceptionnelle. L’exode vers Butembo pour fuir l’insécurité dans la sous-région a conduit à une rapide concentration spontanée des populations et à une urbanisation sans cesse croissante. L’imperméabilisation des vastes étendues de terres consécutive à cette expansion spatiale rapide de la ville a généré des problèmes environnementaux qui affectent la structure urbaine. La ville est actuellement confrontée à des risques hydrologiques diversifiés : ravinements progressifs et régressifs, inondations, et remobilisation d’anciens glissements de terrain. [less ▲]

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See detailDu texte littéraire au document : les connexions entre les papyrus littéraires et documentaires grecs et latins
Marganne, Marie-Hélène ULg

in Derda, Tomasz; Urbanik, Jakub (Eds.) Actes du XXVIIe Congrès International de papyrologie (Varsovie, 29.07-03.08.2013) (2014)

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres ... [more ▼]

Si l'on distingue généralement les papyrus littéraires et les papyrus documentaires grecs et latins, ces deux catégories présentent cependant, à côté du support, de l'écriture et des scribes, d'autres caractéristiques communes : certains papyrus paralittéraires présentent des traits documentaires ; d'autres papyrus sont trop fragmentaires pour être sûrement identifiés, soit comme littéraires, soit comme documentaires ; certains écrits comme les lettres et les discours peuvent, soit être liés à une profession ou à une circonstance particulière (documents), soit être fictifs (littéraires) ; des papyrus documentaires contiennent des citations ou des réminiscences littéraires ; des papyrus littéraires présentent un document sur l'autre face ; des papyrus littéraires font partie d'archives documentaires . Appliquant aux textes documentaires ou indéterminés la même grille d'analyse qu'aux textes littéraires, la nouvelle base de données du CEDOPAL permet de rendre compte de ces connexions et de les exploiter en vue de mieux évaluer les écrits concernés, les méthodes scribales mises en œuvre, ainsi que leur contexte de production et d'utilisation. [less ▲]

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See detailA Conceptual Event-Tree Model for Coseismic Landslide Dam Hazard Assessment
Fan, X.; Huang, R.; van Westen, C. et al

in Landslide Science for a Safer Geoenvironment (2014)

Abstract Earthquakes may trigger a series of multiple cascading geohazard phenomena. For example, coseismic landslides may block rivers and form landslide dams, which occur frequently in tectonically ... [more ▼]

Abstract Earthquakes may trigger a series of multiple cascading geohazard phenomena. For example, coseismic landslides may block rivers and form landslide dams, which occur frequently in tectonically active mountains with narrow and steep valleys. The catastrophic release of water masses from landslide-impounded lakes is capable to produce outburst floods and debris flows, causing loss of lives, housing and infrastructure. Quantifying the probability of these cascading phenomena following a triggering event has been a main ... [less ▲]

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See detailMicromorph brachiopods from the Viséan (Carboniferous) of northwest Ireland
Mottequin, Bernard ULg; Sevastopulo, George; Simon, Eric

in Cerdeno, Esperanza (Ed.) 4th International Palaeontological Congress, Abstract Volume (2014)

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See detailGNSS meteorology and impact on NRT position
Brenot, Hugues; Wautelet, Gilles ULg; Warnant, René ULg et al

in ENC-GNSS 2014 (2014)

The analysis of GNSS signal and the use a dense network of ground-based stations allow to measure tropospheric parameters that can be used for near real-time (NRT) meteorological applications (e.g ... [more ▼]

The analysis of GNSS signal and the use a dense network of ground-based stations allow to measure tropospheric parameters that can be used for near real-time (NRT) meteorological applications (e.g. monitoring of the delay of the neutral atmosphere and the detection of blobs of water vapour). On the other hand, the meteorological activity can impact GNSS positioning solutions. For this reason, NRT indicators of the tropospheric activity related to the disturbance of GNSS signal are required. Using a dense network of GNSS stations, this study presents a new NRT indicator based on the double differences of the ionosphere-free combination. To validate this indicator, the impact of severe weather conditions on RTK positioning solutions is shown. [less ▲]

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See detailRelationship between vasodilation capacity, antioxidant activity and phenolic content of different types of wine aging in oak barrels
Degives, Julien; Kevers, Claire ULg; PINCEMAIL, Joël ULg et al

in International Conference Wine Active Compounds 2014 (2014)

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See detailLes dieux et la cité. Représentations des divinités tutélaires entre Grèce et Phénicie
Bonnet, Corinne; Pirenne-Delforge, Vinciane ULg

in Zenzen, Nicolas; Hölscher, Tonio; Trampedach, Kai (Eds.) Aneignung und Abgrenzung. Wechselnde Perspektiven auf die Antithese von ‘Ost’ und ‘West’ in der griechischen Antike (2014)

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See detailA Greener Common Agricultural Policy Towards 2020 And Its Implementation in Wallonia
Burny, Philippe ULg

in Ozunu, Alexandru (Ed.) The 10th Elsedima International Conference : Book of abstracts “Environmental Legislation, Safety Engineering and Disaster Management”, September 18th-19th, 2014, Cluj-Napoca, Romania : 10th Anniversary (2014)

ln order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in ... [more ▼]

ln order to implement the new Common Agricultural Policy agreed upon in 2013, the Walloon government had to make some choices, left to the Member States or the regions within them, which is the case in Belgium. ln January 2014, it was decided to implement the green payment (which is compulsory) proportionally to the basic payments, the payment for young farmers (compulsory) at its maximum authorized level (2% of the total envelope for direct payments), an additional payment for the first 50 hectares (payment which is left to the choice of the Member State/region), coupled payments (including 2.1 % of the regional envelope for direct payments for pastures and forage area), and the basic payment (compulsory, representing 26.7 % of the total regional envelope for direct payments only in Wallonia). [less ▲]

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See detailA Fast Newton-Raphson Method in Stochastic Linearization
Canor, Thomas ULg; Blaise, Nicolas ULg; Denoël, Vincent ULg

in Proceedings of the Ninth International Conference on Structural Dynamics (2014)

Owing to its accessible implementation and rapidity, the equivalent linearization has become a common probabilistic approach for the analysis of large-dimension nonlinear structures, as encountered in ... [more ▼]

Owing to its accessible implementation and rapidity, the equivalent linearization has become a common probabilistic approach for the analysis of large-dimension nonlinear structures, as encountered in earthquake and wind engineering. It consists in replacing the nonlinear system by an equivalent linear one, by tuning the parameters of the equivalent system, in order to minimize some discrepancy error. Consequently classical analysis tools such as the spectral analysis may be reconditioned to approximate the solution of structures with slight to moderate nonlinearities. The tuning of the equivalent parameters requires the solution of a set of nonlinear algebraic equations involving integrals. It is typically performed with the fixed-point algorithm, which is known to behave poorly in terms of convergence. We therefore advocate for the use and implementation of a Newton-Raphson approach, which behaves much better, even in its dishonest formulation. Unfortunately, this latter option requires the costly construction of a Jacobian matrix. In the approach described in this paper, this issue is answered by introducing a series expansion method that provides a fast and accurate estimation of the residual function (whose solution provides the equivalent parameters) and a fast and approximate estimation of the Jacobian matrix. An illustration demonstrate the good accuracy obtained with the proposed method. [less ▲]

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See detailThermoCycle: A Modelica library for the simulation of thermodynamic systems
Quoilin, Sylvain ULg; Desideri, Adriano ULg; Wronski, Jorrit et al

in Proceedings of the 10th International Modelica Conference 2014 (2014)

This paper presents the results of an on-going project to develop ThermoCycle, an open Modelica library for the simulation of low-capacity thermodynamic cycles and thermal systems. Special attention is ... [more ▼]

This paper presents the results of an on-going project to develop ThermoCycle, an open Modelica library for the simulation of low-capacity thermodynamic cycles and thermal systems. Special attention is paid to robustness and simulation speed since dynamic simulations are often limited by numerical constraints and failures, either during initialization or during integration. Furthermore, the use of complex equations of state (EOS) to compute thermodynamic properties significantly decreases the simulation speed. In this paper, the approach adopted in the library to overcome these challenges is presented and discussed. [less ▲]

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See detailLe droit des biens. les droits réels démembrés
Lecocq, Pascale ULg

in Leleu, Yves-Henri (Ed.) Chroniques Notariales (2014)

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See detailFirst assessment of the impacts of Saharan dust events on the respiratory health in West Africa: A case study in the Northern Benin
De Longueville, Florence ULg; Henry, Sabine; Ozer, Pierre ULg

in Belviso, Claudia; Fiore, Saverio; Giannossi, Maria Luigia (Eds.) DUST2014 - International Conference on Atmospheric Dust _ Book of Abstracts (2014)

More than 50% of the global dust emitted into the atmosphere comes from the Sahara. About 60% of the Saharan dust move southwards to the Gulf of Guinea (Engelstaedter et al., 2006). Once in the air, these ... [more ▼]

More than 50% of the global dust emitted into the atmosphere comes from the Sahara. About 60% of the Saharan dust move southwards to the Gulf of Guinea (Engelstaedter et al., 2006). Once in the air, these dust contribute to increase the concentrations of particles smaller than 10 microns (PM10), which are respirable particles (Ozer et al. 2005). A number of adverse health effects have been associated with desert dust, including respiratory diseases (Goudie, 2014). [...] [less ▲]

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See detailL’"Atlas marianus", une entreprise collective
Delfosse, Annick ULg

in Christin, Olivier; Flueckiger, Fabrice; Ghermani, Naïma (Eds.) Sacrée géographie. L’"Atlas Marianus" de Wilhelm Gumppenberg et l’éclatement de la chrétienté (2014)

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See detailConcrete repair bond: evaluation and factors of influence
Bissonnette, Benoît; Courard, Luc ULg; Garbacz, Andrzej et al

in Grantham, Michael; Basheer, Muhammed; Magee, Bryan (Eds.) et al Proceedings of the 5th International Conference on Concrete Repair (2014)

Repair and strengthening of existing concrete structures are among the biggest challenges civil engineers are facing today and will have to face in the years to come. Present concerns of sustainable ... [more ▼]

Repair and strengthening of existing concrete structures are among the biggest challenges civil engineers are facing today and will have to face in the years to come. Present concerns of sustainable development emphasizing repair instead of new construction will only strengthen this trend. Concerted efforts towards improving the durability of concrete repairs are still needed from scientists and engineers. One of the critical aspects of durability of concrete repairs and overlays is lasting and sufficient interfacial bond between repair material and existing concrete substrate. This paper summarizes some of the findings of a collaborative study devoted to the most significant factors influencing bond in repairs (roughness, degree of saturation and carbonation of the substrate) and its field evaluation (type of loading, device misalignment). Based on the test results collected in different test programs, guideline-type recommendations for surface preparation prior to repair were issued. [less ▲]

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See detailInformatiser le Französisches Etymologisches Wörterbuch: la nécessaire prise en compte de l'utilisateur
Renders, Pascale ULg; Baiwir, Esther ULg

in Abel, Andrea; Vettori, Chiara; Ralli, Natascia (Eds.) Proceedings of the XVI EURALEX International Congress: The User in Focus, 15-19 juillet 2014 (2014)

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See detailRepresentations for Cross-task, Cross-object Grasp Transfer
Hjelm, Martin; Detry, Renaud ULg; Ek, Carl Henrik et al

in IEEE International Conference on Robotics and Automation (2014)

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See detailNuisibilité de la cécidomyie équestre, Haplodiplosis marginata (von Roser) et protection du blé tendre d'hiver
Censier, Florence ULg; Chavalle, Sandrine; San Martin y Gomez, Gilles et al

in AFPP - 10ème Conférence Internationale sur les Ravageurs en Agriculture (2014)

These last years, the resurgence of the saddle gall midge, Haplodiplosis marginata (von Roser), has been observed in several European countries and this pest has sometimes inflicted severe damage in ... [more ▼]

These last years, the resurgence of the saddle gall midge, Haplodiplosis marginata (von Roser), has been observed in several European countries and this pest has sometimes inflicted severe damage in cereals. Trials were conducted in heavily infested fields to assess its nuisibility to winter wheat crops. For this purpose, protection schemes including one to four successive applications of lambda-cyhalothrin allowed to vary the exposure period of wheat to the saddle gall midge. The impact of the pest on yield was substantial and closely correlated to the number of galls induced on stems. These trials also showed the importance to synchronize insecticide sprayings with flights to obtain a good efficacy. Eventually they revealed that applying insecticide at the moment of first flights could in some cases reach the larvae still present in the soil. [less ▲]

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See detailL'art de la guigne en 1862. Contexte, intertexte et sous-texte du Guignon de Mallarmé
Durand, Pascal ULg

in Brissette, Pascal; Luneau, Marie-Pier (Eds.) Deux siècles de malédiction littéraire (2014)

Deuxième texte en vers publié par Mallarmé, dans la revue L'Artiste, alors dirigée par Arsène Houssaye, qui n’en retint que les cinq premiers tercets, Le Guignon place l’entrée de son auteur dans le champ ... [more ▼]

Deuxième texte en vers publié par Mallarmé, dans la revue L'Artiste, alors dirigée par Arsène Houssaye, qui n’en retint que les cinq premiers tercets, Le Guignon place l’entrée de son auteur dans le champ poétique sous le signe d’une malédiction d’aspect très convenu, tant y paraît bien saturé l’appareil des clichés assimilant élection poétique et ratage social. La banalité du propos, gage donné aux pairs d’une adhésion fervente aux normes à quoi la plupart d’entre eux se rangent au milieu du Second Empire, y prend cependant une tournure assez singulière, témoignant d’un jeu avec les codes autant que d’une soumission à ceux-ci. Ce jeu passe par un complexe montage intertextuel articulant, au registre de la malédiction poétique, les apports d’un Nerval, d’un Gautier, d’un Baudelaire et d’un Cladel ; il passe aussi par une tonalité grotesque et paroxystique, reflet d’une distance prise à l’égard de l’imaginaire collectif ainsi synthétisé et d’une extériorisation critique de structures littéraires puissamment incorporées, au prix d’un point de vue tout ensemble interne et externe pris sur ces structures. Texte fondamentalement trivial — à tous les sens du terme —, Le Guignon tient ainsi, à la fois, de la récitation d’un credo et d’une sorte de physiologie des poètes post-romantiques. [less ▲]

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See detailLipschitz robust control from off-policy trajectories
Fonteneau, Raphaël ULg; Ernst, Damien ULg; Boigelot, Bernard ULg et al

in Proceedings of the 53rd IEEE Conference on Decision and Control (IEEE CDC 2014) (2014)

We study the minmax optimization problem introduced in [Fonteneau et al. (2011), ``Towards min max reinforcement learning'', Springer CCIS, vol. 129, pp. 61-77] for computing control policies for batch ... [more ▼]

We study the minmax optimization problem introduced in [Fonteneau et al. (2011), ``Towards min max reinforcement learning'', Springer CCIS, vol. 129, pp. 61-77] for computing control policies for batch mode reinforcement learning in a deterministic setting with fixed, finite optimization horizon. First, we state that the $\min$ part of this problem is NP-hard. We then provide two relaxation schemes. The first relaxation scheme works by dropping some constraints in order to obtain a problem that is solvable in polynomial time. The second relaxation scheme, based on a Lagrangian relaxation where all constraints are dualized, can also be solved in polynomial time. We theoretically show that both relaxation schemes provide better results than those given in [Fonteneau et al. (2011)] [less ▲]

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See detailThe Relation Between The Food Price And The Climatic and Agricultural Factors In Republic of Niger
Andres, Ludovic ULg; Du Faux, Judith ULg; Lebailly, Philippe ULg

in Akın Olgun, F.; Kurtović, Mirsad; Filya, Ismail (Eds.) 25th International Scientific-Experts Congress on Agriculture and Food Industry : Book of abstracts (2014)

In the republic of Niger, the food price is very important for the farmers because the agricultural and livestock activities represent the main income of rural population. Furthermore, the temporary ... [more ▼]

In the republic of Niger, the food price is very important for the farmers because the agricultural and livestock activities represent the main income of rural population. Furthermore, the temporary disruptions (climate, environment) influence the food price. The target of this paper is to demonstrate the evolution of the millet current prices and the link between the prices and the annual temporary disruptions. The first factor is the monthly current prices of millet because it is the main food consumed by the rural population. The period taken into consideration is twenty years. The second factor is the annual precipitation and the number of raining days. The third factor is based on the millet production (production, yield, area). In the first time, we analyze the time series of monthly prices of millet with a mixed model. In the second time, an correlation compares the link between the “environmental” factors and the prices series. In conclusion, the time series studies of millet prices have demonstrated the cycle of these and their seasonality. Furthermore, the correlation has showed a difference between the studied factors and the millet prices. The main result is the demonstration of two time period: higher prices (May to August) and lower prices (October to January). [less ▲]

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See detailWhen children stop trusting what they have perceived
Geurten, Marie ULg; Willems, Sylvie; Meulemans, Thierry ULg

in Neuropsychological Rehabilitation Special Interest Group of the WFNR - Conference Programme (2014)

Background and aims: A common hypothesis to explain metamemory heuristics learning throughout childhood lies on the assumption that the knowledge underlying these metacognitive rules develop from people’s ... [more ▼]

Background and aims: A common hypothesis to explain metamemory heuristics learning throughout childhood lies on the assumption that the knowledge underlying these metacognitive rules develop from people’s prior day-to-day experiences. However, the specific processes that sustain this learning are still unclear. In this study, we examined the mechanisms implicated in this empirical development by manipulating the learned interpretation of the Easily Learned = Easily Remembered (ELER) heuristic through an implicit process involving the detection of environmental regularities. Method: A sample of sixty normally developing children aged 4-5, 6-7, and 8-9 years old was recruited for this study. Each child participated in three 60-minute sessions separated approximately by one-week interval and was trained to learn implicitly a reverse interpretation of the ELER heuristic. The influence of executive functions on children’s judgment of learning at posttest was also investigated. Results: In addition to an early development of the ELER heuristic, results revealed a reduction of this heuristic’s use after the implicit training in the two youngest groups. Furthermore, executive monitoring was demonstrated to account for the lack of change observed in older children after the training phases. Conclusions: In a developmental perspective, these findings present a coherent picture of children’s learning of metacognitive heuristics. Specifically, automatic and implicit learning was demonstrated to be followed by an effortful control of the heuristics’ use. [less ▲]

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See detailDurability of hydrophobic treatments on concrete monuments
Courard, Luc ULg; Lucquiaud, Vincent ULg; Gérard, Olivier et al

in Proceedings of 7th International Conference on Water Repellent Treatment and Protective Surface Technology for Building Materials (2014)

The protection of concrete historical structures is a challenge for the coming years. Hydrophobic treatment may induce a delay in degradations progress as well as a protection against water penetration ... [more ▼]

The protection of concrete historical structures is a challenge for the coming years. Hydrophobic treatment may induce a delay in degradations progress as well as a protection against water penetration. Existing products - mainly silane and siloxane based – have been submitted to different ageing processes including UV radiation, moistening cycles, thermal shocks, freeze-thaw cycles, carbonation and efficiency has been evaluated on the base of contact angle, vapour and chloride permeability and, capillarity absorption. Investigation results clearly show a good behaviour of hydrophobic treatments under main ageing conditions. [less ▲]

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See detailLe corps du Prince. La perception de l'Egypte ancienne
Winand, Jean ULg

in Marchandisse, Alain (Ed.) Le corps du Prince (2014)

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See detailThe Hangenberg Event (uppermost Famennian) in southern Belgium (Namur-Dinant Basin)
Mottequin, Bernard ULg; Poty, Edouard

in Cerdena, Esperanza (Ed.) 4th International Palaeontological Congress, Abstract Volume (2014)

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See detailAn implementation of the generalized Maxwell viscoelastic constitutive model
Careglio, Claudio; Canales Cardenas, Cristian ULg; Papeleux, Luc ULg et al

in Bertolino, Graciela; Cantero, Mariano; Storti, Mario (Eds.) et al Mecánica Computacional Vol XXXIII (2014)

Viscoelastic problems deserve great interest in Computational Mechanics literature. In the last years different approaches have been proposed in order to model viscoelastic problems, as in the case of the ... [more ▼]

Viscoelastic problems deserve great interest in Computational Mechanics literature. In the last years different approaches have been proposed in order to model viscoelastic problems, as in the case of the generalized Maxwell model and its numerical implementation. In particular Kaliske and Rothert (M. Kaliske and H. Rothert, Comput. Mech., 19(3): 228-239 (1997)) discussed basic reological models and the formulation of a generalized Maxwell model and the corresponding implementation of three dimensional viscoelastic model both for small and large strain cases. The numerical implementation addressed by Kaliske and Rothert is quite simple for small strain case and can be extended to a large strain format amenable to be included in finite element codes SOGDE and Metafor. The implementation of the discussed model in a 1D constitutive model, written in Matlab, is addressed. The well known relaxation and creep tests are simulated and compared with analytical results. Furthermore, the influence of constitutive parameters on the viscoelastic response is discussed. In addition, the model is implemented in Finite Element codes and the obtained results are compared with the 1D ones. [less ▲]

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See detailAssessing the quality of Experimental Data with Gaussian Processes: Example with an Injection Scroll Compressor
Quoilin, Sylvain ULg; Schrouff, Jessica ULg

in Proceedings of the 2014 Purdue Conferences (2014)

This paper describes an experimental study carried out on a refrigeration scroll compressor with and without vapour injection. The test rig designed for that purposed allows evaluating the performance ... [more ▼]

This paper describes an experimental study carried out on a refrigeration scroll compressor with and without vapour injection. The test rig designed for that purposed allows evaluating the performance over a wide range of operating conditions, by varying the supply pressure, the injection pressure, the discharge pressure, the supply superheating and the injection superheating. 97 Steady-state points are measured, with a maximum isentropic efficiency of 64.1% and a maximum consumed electrical power of 13.1 kW. A critical analysis of the experimental results is then carried out to evaluate the quality of the data using a machine learning method. This method based on Gaussian Processes regression, is used to build a statistical operating map of the compressor as a function of the different inputs. This statistical operating map can then be compared to the experimental data points to evaluate their accuracy. [less ▲]

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See detailBelgian mud mounds, facies and structure and stromatoporoid fauna
Da Silva, Anne-Christine ULg; Kershaw, S.; Boulvain, Frédéric ULg et al

in Wesenberg Lauridsen, b.; Bjerager, M. (Eds.) Cold water carbonates at high paleolatitudes from the Palaeozoic to the Reent – combining outcrops studies with core studies and geophysical imaging. Programme and abstract book (2014)

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See detailComment les futurs enseignants du secondaire conçoivent-ils l’évaluation formative et ses difficultés de mise en œuvre ?
Goffin, Christelle ULg; Renson, Jean-Marie ULg; Fagnant, Annick ULg

in Actes du colloque : Cultures et politiques de l’évaluation en éducation et en formation. (2014)

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See detailExperimental Study of the Human Ability to Deliberately Excite a Flexible Floor
Schwartz, Cédric ULg; Berger, Alexis; Bruls, Olivier ULg et al

in Zingoni, Alphose (Ed.) Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation (2014)

Human-structure interactions are not completely understood yet. This paper presents an experimental study focusing on the interaction between a human and a flexible support, with a major aim to better ... [more ▼]

Human-structure interactions are not completely understood yet. This paper presents an experimental study focusing on the interaction between a human and a flexible support, with a major aim to better understand how the behavior of a human subject, bouncing on a flexible structure, adapts to the support motion. Exploratory experiments are undertaken with a 7m-span timber footbridge tested in the Human Motion Analysis Laboratory of the University of Liege. The movements of the coupled system composed of the subject and the footbridge are recorded by Motion Capture technology; the subject\textquoteright{}s 3-D body motion is defined by three important angles: ankle, knee and hip. The interaction between the subject and the footbridge is also quantified by means of force platform measurements. The experiments indicate an influence of the support amplitude and natural frequency on the phase shift between the oscillatory floor motion and the three angles characterizing the motion. [less ▲]

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See detailStone tool hafting in the Middle Palaeolithic as viewed through the microscope
Rots, Veerle ULg

in Marreiros, Juan; Bicho, Nuno; Gibaja, Juan (Eds.) Proceedings of the Use-wear conference at Faro, Portugal (2014)

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See detailFULL-SCALE SEISMIC TESTING OF MODERN UNREINFORCED THERMAL INSULATION CLAY BLOCK MASONRY HOUSES
Mendes, Luis; Candeias, Paulo; Correia, A et al

in Proceedings of the 9th International Masonry Conference 2014 (2014)

In the scope of the transnational access activities of the European research project SERIES, the Laboratório Nacional de Engenharia Civil (LNEC) has provided access to its 3-D shaking table to the ... [more ▼]

In the scope of the transnational access activities of the European research project SERIES, the Laboratório Nacional de Engenharia Civil (LNEC) has provided access to its 3-D shaking table to the international construction company Wienerberger AG and to a group of European experts, in order to perform full-scale seismic tests on an industrial solution for buildings using a modern unreinforced thermal insulation clay block masonry structure. Such solution represents a very common construction method in Central Europe and, although there are cyclic shear test results available, its effective dynamic response under seismic events still requires experimental validation. For this purpose, two full-scale mock-ups with different geometries were tested on the 3-D shaking table using a series of seismic records with increasing intensity. This paper focuses on the most relevant experimental results regarding the structural response of the specimens, e.g., the dynamic response evolution, the collapse mechanism identified and the maximum drift values measured. The paper closes with the main conclusions drawn and with proposals for future developments. [less ▲]

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See detailPerturbation methods for the determination of the statistical response of nonlinear Volterra systems
Denoël, Vincent ULg; Carassale, Luigi

in Proceedings of the Eurodyn 2014 Conference (2014)

The point-like quasi-steady aerodynamic loading in a turbulent flow is formally expressed as a function of the squared relative velocity between the fluid and the investigated structure. The three major ... [more ▼]

The point-like quasi-steady aerodynamic loading in a turbulent flow is formally expressed as a function of the squared relative velocity between the fluid and the investigated structure. The three major terms governing the low-order statistics of the response are known to be related to the average loading, the linear turbulent loading and the aerodynamic damping. The three other terms in the loading, namely the quadratic turbulence term, the parametric velocity feedback term and the squared velocity term, may significantly affect the higher order statistical cumulants of the response. These latter two sources of fluid-structure interaction are usually disregarded, by lack of efficient simulation tools, except a Monte Carlo simulation of the nonlinear equation. In this paper, we provide a formal analysis of the complete nonlinear model, including thus all six terms, but mainly focusing on the importance of the two nonlinear coupling terms of the loading. Closed form solutions of the response are derived for a second-order Volterra model of this problem, under the assumption of different timescales in the loading and in the structural behavior. Two major outcomes of the analysis are, on the one hand, that the squared structural velocity term has no influence on the cumulants of the response up to order 4 and, on the other hand, that the parametric velocity feedback acts as a reduction of the non Gaussianity of the response. [less ▲]

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See detailLearning dextrous grasps that generalise to novel objects by combining hand and contact models
Kopicki, Marek; Detry, Renaud ULg; Schmidt, Florian et al

in IEEE International Conference on Robotics and Automation (2014)

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See detailTerqa Ceramic Culture during the 3rd Millennium BC. Material from 18th-26th Excavation Campaigns
Mas, Juliette ULg

in Bieliński, P; Gawlikowski, M; Koliński, R (Eds.) et al Proceedings of the 8th International Congress on the Archaeology of the Ancient Near East, 30 April – 4 May 2012, University of Warsaw, Volume 2: Excavation and Progress Reports, Posters (2014)

Terqa, an important Syrian Bronze Age site located in the Lower Middle-Euphrates region, benefited from a key position which provided the settlement with the opportunity to gain from exchanges and ... [more ▼]

Terqa, an important Syrian Bronze Age site located in the Lower Middle-Euphrates region, benefited from a key position which provided the settlement with the opportunity to gain from exchanges and innovations arriving from both the North and South, while developing its own identity and culture. A new study on pottery has just been carried out on 3rd-millennium material from eight excavation seasons. The recovered material has been used to specify Terqa’s chronostratigraphy with greater accuracy, comparing it with the neighboring site of Mari and other contemporary ones but also providing us with a preliminary overview of Terqa’s ceramic culture during the Early Bronze Age. [less ▲]

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See detailMultiscale aspects in modeling percussive drilling: from wave propagation to rigid body dynamics
Depouhon, Alexandre ULg; Denoël, Vincent ULg; Detournay, Emmanuel

in Proceedings of the 3rd International Colloquium on Nonlinear Dynamics and Control of Deep Drilling Systems (2014)

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See detailKnuckleballs
Darbois-Texier, Baptiste ULg; Cohen, Caroline; Quéré, David et al

in Clanet, Christophe (Ed.) Physics of Sports (2013, December 30)

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See detailLe patron urbain, un facteur influençant l'impact de l'urbanisation sur les écosystèmes: les cas de Kisangani et de Lubumbashi (RDC)
Andre, Marie ULg; Mahy, Grégory ULg; Lejeune, Philippe ULg et al

in PACODEL (Ed.) Colloque international Territoires périurbains: développement, enjeux et perspectives dans les pays du sud (2013, December 19)

Les dynamiques et patrons paysagers de deux villes entre deux années (Kisangani entre 2002 et 2010 ; Lubumbashi entre 2002 et 2008, en République Démocratique du Congo) ont été étudiés afin d’évaluer leur ... [more ▼]

Les dynamiques et patrons paysagers de deux villes entre deux années (Kisangani entre 2002 et 2010 ; Lubumbashi entre 2002 et 2008, en République Démocratique du Congo) ont été étudiés afin d’évaluer leur influence sur l’impact de l’extension et/ou densification de ces villes, et plus particulièrement de leur zone périurbaine, sur leurs écosystèmes internes et périphériques. En effet, le patron paysager occupe une place fondamentale dans l’hypothèse centrale de l’écologie du paysage, appelée pattern-process paradigm puisqu’il influence les processus écologiques et inversement. Sa description et son analyse sont donc particulièrement importantes (Bogaert et al. 2004; Coulson et al. 1999). Les indices de composition, communément utilisés en écologie du paysage, décrivent entre autres le patron en quantifiant la présence et le nombre de taches issues des différentes classes du paysage (Alberti 2008). D’autre part, les villes ne cessant d'augmenter leur emprise sur les paysages dont elles font partie, l'étude des espaces qui les ceinturent, le phénomène de leur extension dans les régions rurales ainsi que les schémas conceptuels de leur morphologie et dynamique interne sont plus que jamais des sujets d'actualité (Bhatta et al., 2010; Borsdorf et al., 2002; De Blij, 1977; Gaston, 2010; Halleux, 2006). Paradoxalement, les scientifiques de différentes disciplines peinent à donner une définition, des caractéristiques et des limites acceptées par tous aux notions se rattachant aux différentes zones présentes dans le gradient urbain-rural. Cette étude se distingue des autres, généralement subjectives, par son approche quantifiée et objective. Pour chacune des deux villes, deux images SPOT 5 ont été classifiées sur base d’une approche orientée-objet (Definiens 2013). Ensuite, des indices de composition paysagère ont été évalués afin 1) d’identifier l’étendue de chaque zone (urbaine, périurbaine, rurale) au sein du gradient urbain-rural en utilisant les définitions de zones proposées par André et al. (sous presse), 2) de décrire ces différentes zones en quantifiant les caractéristiques morphologiques les plus couramment citées avant d’en borner les valeurs (André et al. 2012) et 3) de quantifier la dynamique des différentes zones au cours de la dernière décade. Ensuite, les similarités et différences entre ces villes ainsi que la pertinence et les faiblesses de la méthode ont été identifiées et discutées. Les résultats de cette étude ont pour ambition de contribuer à une meilleure compréhension et prise en compte du rôle du patron paysager dans la résistance potentielle des écosystèmes naturels à l’extension et/ou la densification d’une ville donnée. [less ▲]

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See detailEncres anciennes: utilisation non conventionnelle d'aliments
Bouchat, Isabelle; Wymeersch, Noémie; Bchir, Brahim ULg et al

in Septième symposium du GCNAS: Vendredi 6 décembre, Louvain-La-Neuve (2013, December 06)

De tout temps l’homme utilise des pigments pour peindre. Il y a 27.000 ans déjà, près de Marseille, dans la grotte Cosquer, des fresques furent peintes par des hommes préhistoriques. Il existe deux ... [more ▼]

De tout temps l’homme utilise des pigments pour peindre. Il y a 27.000 ans déjà, près de Marseille, dans la grotte Cosquer, des fresques furent peintes par des hommes préhistoriques. Il existe deux grandes catégories de pigments et colorants: les naturels et les artificiels. La première catégories contient les pigments minéraux tels que les argiles (ocre jaune ou rouge, argile verte ou brune) mais aussi des pierres (lapis lazuli (bleu)) et les pigments organiques d’origine végétale (gaude (jaune)) ou d’origine animale (murex (pourpre). La deuxième catégorie contient les pigments et colorants artificiels issus de réactions chimiques (minium (orange)) ou bien des mi-végétaux, mi-minéraux comme les encres ferro-galliques classés dans les divers. Après avoir servi pendant plusieurs siècles, tous ces pigments ont été remplacés à la fin du XIXe par des colorants synthétiques issus de la pétrochimie, car ces derniers ont l'avantage de la reproductibilité constante des couleurs. Mais la fin programmée du pétrole suscite un regain d'intérêt pour les préparations naturelles. C'est donc très logiquement que notre laboratoire a décidé de s'intéresser au sujet et en particulier aux encres venant du jus de chou rouge et aux encres ferro-grenadiques en collaboration avec l'Abbaye de Villers-la-Ville. [less ▲]

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See detailEvaluation de la Teneur Sanguine en Sélénium dans le Sang des Vaches en Wallonie (Belgique)
Mehdi, Youcef ULg; Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg et al

in 20ième Rencontre Recherches Ruminants (2013, December 04)

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See detailObservations of Red Giants in the Cluster NGC 6633 by the CoRoT Space Mission and the HARPS and SOPHIE Spectrometers
Barban, C.; Baudin, F.; Poretti, E. et al

in Astronomical Society of the Pacific Conference Series (2013, December 01)

The CoRoT space mission and the HARPS and SOPHIE ground-based spectrometers have observed red giants belonging to the open cluster NGC 6633. Solar-like oscillations are detected in the CoRoT data obtained ... [more ▼]

The CoRoT space mission and the HARPS and SOPHIE ground-based spectrometers have observed red giants belonging to the open cluster NGC 6633. Solar-like oscillations are detected in the CoRoT data obtained for four red giants. Spectroscopic data questions the cluster membership of one of these stars. The combination of these photometric and spectroscopic data will be a unique opportunity to estimate their global parameters as well as to probe their internal structure. [less ▲]

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See detailSpectropolarimetric Observations of Three Slowly Pulsating B Stars with the High Accuracy Radial Velocity Planet Searcher Spectrograph
Hubrig, S.; Ilyin, I.; Briquet, Maryline ULg et al

in Progress in Physics of the Sun and Stars: A New Era in Helio- and Asteroseismology (2013, December 01)

In our previous low-resolution spectropolarimetric observations with the Very Large Telescope (VLT), three slowly pulsating B-type (SPB) stars, HD 74195, HD 74560, and HD 85953, showed the presence of a ... [more ▼]

In our previous low-resolution spectropolarimetric observations with the Very Large Telescope (VLT), three slowly pulsating B-type (SPB) stars, HD 74195, HD 74560, and HD 85953, showed the presence of a weak magnetic field. The results of our new measurements, using high-resolution spectropolarimetric observations, formally showed significant detections above the 3σ level in the SPB stars HD 74195 and HD 85953. [less ▲]

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See detailBrèves considérations sur le budget général des dépenses de l'autorité fédérale
Behrendt, Christian ULg

in Uyttendaele, Marc; Sautois, Joëlle (Eds.) La sixième réforme de l'Etat (2012-2013) : Tournant historique ou soubresaut ordinaire ? (2013, December 01)

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See detailDifferential Seismic Modeling of Stars
Ozel, N.; Mosser, B.; Dupret, Marc-Antoine ULg et al

in Astronomical Society of the Pacific Conference Series (2013, December 01)

CoRoT (Convection Rotation and planetary Transits) observations provide the opportunity to study a large sample of stars ranging from the Main Sequence (MS) to the Red Giant Branch. With the large ... [more ▼]

CoRoT (Convection Rotation and planetary Transits) observations provide the opportunity to study a large sample of stars ranging from the Main Sequence (MS) to the Red Giant Branch. With the large increase in the number of stars showing solar-like oscillations, we intend to extract as much information as possible from a low signal-to-noise ratio (SNR) oscillation spectrum, benefiting from comparison with a reference star having similar seismic and fundamental parameters. We propose a differential method to determine stellar properties of solar-like oscillations which we call “differential seismology of stellar twins”. [less ▲]

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See detailNon-Perturbative Effect of Rotation on Dipolar Mixed-Modes in Red Giants
Ouazzani, R.-M.; Goupil, M.-J.; Dupret, Marc-Antoine ULg et al

in Astronomical Society of the Pacific Conference Series (2013, December 01)

The space missions CoRoT (Convection Rotation and Planetary Transits) and Kepler provide high quality data that allows the transport of angular momentum in stars to be investigated by the seismic ... [more ▼]

The space missions CoRoT (Convection Rotation and Planetary Transits) and Kepler provide high quality data that allows the transport of angular momentum in stars to be investigated by the seismic determination of the internal rotation profile. In a former study (Ouazzani et al. 2013b) we test the validity of seismic diagnostics for red giant rotation that are based on a perturbative method. Our aim here is to investigate oscillation spectra when that validity no longer holds. We use a non-perturbative approach implemented in the Adiabatic Code of Oscillations including Rotation (ACOR code) (Ouazzani et al. 2012) that accounts for the eff [less ▲]

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See detailASSESSMENT OF PLANT LEAF AREA MEASUREMENT BY USING STEREO- VISION
Leemans, Vincent ULg; Dumont, Benjamin ULg; Destain, Marie-France ULg

in 2013 International Conference on 3D Imaging (IC3D) - Proceedings (2013, December)

The aim of this study is to develop an alternative measurement for the leaf area index (LAI), an important agronomic parameter for plant growth assessment. A 3D stereo-vision technique was developed to ... [more ▼]

The aim of this study is to develop an alternative measurement for the leaf area index (LAI), an important agronomic parameter for plant growth assessment. A 3D stereo-vision technique was developed to measure both leaf area and corresponding ground area. The leaf area was based on pixel related measurements while the ground area was based on the mean distance from the leaves to the camera. Laboratory and field experiments were undertaken to estimate the accuracy and the precision of the technique. Result showed that, though the leaves-camera distance had to be estimated precisely in order to have accurate measurement, the precision of the LAI evaluation, after regression, was equivalent to the reference measurements, that is to say around 10% of the estimated value. This shows the potential of the 3D measurements compared with tedious reference measurements. [less ▲]

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See detailOn periodic reference tracking using batch-mode reinforcement learning with application to gene regulatory network control
Sootla, Aivar; Strelkowa, Natajala; Ernst, Damien ULg et al

in Proceedings of the 52nd Annual Conference on Decision and Control (CDC 2013) (2013, December)

In this paper, we consider the periodic reference tracking problem in the framework of batch-mode reinforcement learning, which studies methods for solving optimal control problems from the sole knowledge ... [more ▼]

In this paper, we consider the periodic reference tracking problem in the framework of batch-mode reinforcement learning, which studies methods for solving optimal control problems from the sole knowledge of a set of trajectories. In particular, we extend an existing batch-mode reinforcement learning algorithm, known as Fitted Q Iteration, to the periodic reference tracking problem. The presented periodic reference tracking algorithm explicitly exploits a priori knowledge of the future values of the reference trajectory and its periodicity. We discuss the properties of our approach and illustrate it on the problem of reference tracking for a synthetic biology gene regulatory network known as the generalised repressilator. This system can produce decaying but long-lived oscillations, which makes it an interesting application for the tracking problem. [less ▲]

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See detailINFLUENCE OF SOLUBLE PROTEINS ON THE ADHERENCE OF PARTICULATE SOILS
Toure, Yetioman ULg; Rouxhet, Paul; Dupont-Gillain, Christine et al

in Malayeri, Reza; Watkinson, Paul A.; Müller-Steinhagen, Hans (Eds.) Proceedings of International Conference on Heat Exchanger Fouling and Cleaning - 2013 (Peer-reviewed) (2013, December)

Adsorbed compounds from food and pharmaceutical mixtures may influence interactions at interfaces and thus fouling and cleaning. In this study, quartz particles (10 to 30µm) were used as a model soil for ... [more ▼]

Adsorbed compounds from food and pharmaceutical mixtures may influence interactions at interfaces and thus fouling and cleaning. In this study, quartz particles (10 to 30µm) were used as a model soil for examining the effect of dissolved proteins on the cleanability of substrates after soiling and drying. Glass and stainless steel pretreated by UV-Ozone (StSteel-UVO) were used as model hydrophilic substrates, while hydrophobic substrates were represented by stainless steel cleaned with ethanol (StSteel-Eth) and polystyrene. BSA and β-LGB were used as proteins. The quartz suspensions used for soiling were prepared in pure water and in a solution of each protein. After soiling and drying, the cleanability was evaluated using a radial-flow cell, with pure water as the cleaning fluid. The presence of proteins in the suspension used for soiling hydrophilic substrates (Glass and StSteel-UVO), decreased the adherence of quartz particles. Its effect was less marked and tended to be opposite for less hydrophilic substrates (StSteel-Eth, Polystyrene). The adherence cannot be explained by a simple relation with the contact angle. Other factors may be the solution surface tension itself and the protein behavior at the interfaces created by drying and by rehydratation during cleaning. When considering the influence of substrate on soiling, it must be kept in mind that high surface energy solids (metals, oxides) are readily contaminated in contact with air and lose their hydrophilicity. This may improve the substrate behavior regarding cleanability with respect to particulate soil. [less ▲]

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See detailPotentiel d'utilisation de la spectrometrie moyen infrarouge pour prédire le rendement fromager du lait et étudier sa variabilité génétique
Colinet, Frédéric ULg; Troch, Thibault ULg; Abbas, O. et al

in 20èmes Rencontres Recherches Ruminants, Paris, les 4 et 5 Décembre 2013 (2013, December)

Fournir une indication rapide, fiable et bon marché du rendement fromager pour un lait donné, sans devoir appliquer des formules (empiriques ou théoriques) à partir des concentrations préalablement ... [more ▼]

Fournir une indication rapide, fiable et bon marché du rendement fromager pour un lait donné, sans devoir appliquer des formules (empiriques ou théoriques) à partir des concentrations préalablement déterminées pour différents constituants du lait, serait un outil utile et économiquement intéressant tant pour les éleveurs que pour l’industrie laitière. En vue d’étudier la variabilité génétique du rendement fromager à l’échelle du cheptel bovin wallon, des méthodes chimiométriques ont été utilisées afin de développer des équations de prédictions basées sur des spectres moyen infrarouge (MIR) pour les rendements fromagers déterminés en laboratoire et exprimés en frais (RdFF) ou en sec (RdFS). Ceux-ci ont été déterminés sur 258 échantillons de lait analysés en spectrométrie MIR. Les équations de prédiction à partir du spectre MIR du lait ont été développées en utilisant la régression des moindres carrés partiels (PLS) avec une validation croisée interne appliquée sur la dérivée première des spectres MIR. Les coefficients de détermination de validation croisée (R²cv) des équations étaient de 0,81 pour les prédictions du RdFF et de 0,82 pour les celles du RdFS. Les rapports des performances sur les variabilités (RPD) étaient égaux à 2,3. Ces résultats peuvent permettre d’envisager une bonne utilité pratique pour leur prédiction respective, notamment dans le cadre de recherches génétiques. Ces équations ont été appliquées sur la base de données spectrales générée dans le cadre du contrôle laitier wallon. Les composantes de la variance ont été estimées séparément pour le RdFF et le RdFS basées sur un modèle animal « contrôles élémentaires » utilisant des régressions aléatoires. Le jeu de données utilisé comportait 51 537 prédictions pour 7 870 vaches primipares Holstein. Les héritabilités journalières moyennes variaient entre 0,31 (au 5ème jour de lactation (JDL)) et 0,59 (au 279ème JDL) pour le RdFF et entre 0,31 (au 5ème JDL) et 0,57 (au 299ème JDL) pour le RdFS. Ces héritabilités journalières modérées à élevées ont indiqué le potentiel de sélection génétique pour ces deux caractères. [less ▲]

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See detailA management control perspective of sustainability reporting in higher education : in search of a holistic view
Ceulemans, Kim; Van Caillie, Didier ULg; Molderez, Isabelle et al

in Lehner, Othmar; Harrison (Eds.) Proceedings in Finance and Risk series '13 (2013, December)

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See detailEffet du stress hydrique sur la composition biochimique des huiles de quatre variétés de carthame (Carthamus tinctorius) produites dans la région orientale du Maroc.
Ben moumen, Abdessamad; Mansouri, Farid; Fauconnier, Marie-Laure ULg et al

in 6èmes Journées internationales d'étude sur les lipides - Programme scientifique, Recueil des Résumés (2013, December)

L'huile de carthame est produite sur une échelle relativement réduite dans certaines régions d'Afrique du Nord et du Moyen-Orient. Cette huile a été caractérisée dans différentes régions du monde et ... [more ▼]

L'huile de carthame est produite sur une échelle relativement réduite dans certaines régions d'Afrique du Nord et du Moyen-Orient. Cette huile a été caractérisée dans différentes régions du monde et plusieurs expériences ont montré une grande variabilité en fonctions des variétés, des sols et des conditions climatiques. [less ▲]

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See detail"Le roi Louis, en admiration devant le repas du Christ à Milan". Les Français et la "Cène" de Léonard de Vinci
Fagnart, Laure ULg

in Elsig, Frédéric; Natale, Mauro (Eds.) Le duché de Milan et les commanditaires français (1499-1521) (2013, December)

Cette contribution s'attarde sur un épisode de l’histoire des relations entre Léonard de Vinci et les Français, épisode survenu en 1499-1500, au moment de la première conquête française du duché de Milan ... [more ▼]

Cette contribution s'attarde sur un épisode de l’histoire des relations entre Léonard de Vinci et les Français, épisode survenu en 1499-1500, au moment de la première conquête française du duché de Milan. Il s’agit de l’admiration que le roi Louis XII aurait éprouvée pour la "Cène" que l'artiste florentin avait peinte, entre 1494 et 1498, dans le réfectoire du couvent Santa Maria delle Grazie à Milan. L’engouement des Français pour le chef-d’œuvre est évoqué tant par l’intermédiaire de sources, que nous évoquons dans un premier temps, que par l’intermédiaire d’œuvres d’art que nous analysons en deuxième lieu. [less ▲]

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See detailStructural Modelling of the Annulus Fibrosus - an Anisotropic Hyperelastic Model Approach at the Lamellar Level
Mengoni, Marlène ULg; Wijayathunga, V. N.; Jones, Alison C. et al

in Nithiarasu, P.; Löhner, R. (Eds.) Proceedings of the 3rd International Conference on Computational Mathematical Biomedical Engineering (2013, December)

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See detailÉtiopathogénie de la myopathie atypique et gestion raisonnée des cas
Votion, Dominique ULg; Patarin, Florence; Cerri, Simona ULg et al

in In Proceedings: Journée AVEF (Association des Vétérinaires Equins Français) (2013, December)

Atypical myopathy is an acute intoxication resulting from the ingestion of a toxin contained in the seeds of some trees of the genus Acer (i.e. « maple trees »). The causes of the emergence of the disease ... [more ▼]

Atypical myopathy is an acute intoxication resulting from the ingestion of a toxin contained in the seeds of some trees of the genus Acer (i.e. « maple trees »). The causes of the emergence of the disease due to trees naturalized for many decades remain undetermined. Currently, there is no cure for atypical myopathy but symptomatic treatment may be revisited on the basis of knowledge of the aetio-pathogenesis of the disease. This paper compiles recommendations following a discussion on treatment of atypical myopathy held in October 2013 at the University of Liege (Belgium) to provide emergency treatment distinguishing clinical management (1) at hospital, (2) in the field and (3) preventive measures to protect pasture companions. [less ▲]

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See detailUnderstanding variable importances in forests of randomized trees
Louppe, Gilles ULg; Wehenkel, Louis ULg; Sutera, Antonio ULg et al

in Advances in Neural Information Processing Systems 26 (2013, December)

Despite growing interest and practical use in various scientific areas, variable importances derived from tree-based ensemble methods are not well understood from a theoretical point of view. In this work ... [more ▼]

Despite growing interest and practical use in various scientific areas, variable importances derived from tree-based ensemble methods are not well understood from a theoretical point of view. In this work we characterize the Mean Decrease Impurity (MDI) variable importances as measured by an ensemble of totally randomized trees in asymptotic sample and ensemble size conditions. We derive a three-level decomposition of the information jointly provided by all input variables about the output in terms of i) the MDI importance of each input variable, ii) the degree of interaction of a given input variable with the other input variables, iii) the different interaction terms of a given degree. We then show that this MDI importance of a variable is equal to zero if and only if the variable is irrelevant and that the MDI importance of a relevant variable is invariant with respect to the removal or the addition of irrelevant variables. We illustrate these properties on a simple example and discuss how they may change in the case of non-totally randomized trees such as Random Forests and Extra-Trees. [less ▲]

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See detailInfluence de la fatigue sur la foulée lors d’une épreuve d’endurance intense
Bury, Thierry ULg

in Abstract book du Colloque Médico-sportif (2013, December)

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See detailA giant treated with growth hormone
Rostomyan, Liliya ULg; Potorac, Iulia ULg; CASTERMANS, Emilie ULg et al

in The 3rd ENEA Workshop : Hypopituitarism - Abstract book (2013, December)

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See detailVingt minutes en Utopie: l'ALWi
Baiwir, Esther ULg; Renders, Pascale ULg

in Baiwir, Esther; Renders, Pascale (Eds.) Actes de la 5e Journée liégeoise de Traitement des Sources Galloromanes (Liège, 16 mai 2013) (2013, December)

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See detailEvaluation de la composition des huiles d’olive de nouvelles variétés d’olivier introduites dans la région orientale du Maroc
Mansouri, Farid; Ben moumen, Abdessamad; Fauconnier, Marie-Laure ULg et al

in 6èmes Journées internationales d'étude sur les lipides - Programme scientifique, Recueil des Résumés (2013, December)

Le secteur oléicole marocain a connu une évolution importante au niveau des superficies qui ont atteint 900000 ha (*MAPM, 2011). La structure variétale du verger oléicole marocain est caractérisée par la ... [more ▼]

Le secteur oléicole marocain a connu une évolution importante au niveau des superficies qui ont atteint 900000 ha (*MAPM, 2011). La structure variétale du verger oléicole marocain est caractérisée par la prédominance de la Picholine marocaine, qui représente plus de 96 % du patrimoine national et qui est à double fin. [less ▲]

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See detailHypopituitarism in pituitary gigantism (results of an international study)
Rostomyan, Liliya ULg; Daly, Adrian ULg; Shah, NS et al

in The 3rd ENEA Workshop : Hypopituitarism - Abstract book (2013, December)

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See detailIslamic food practices in migration context. An ethnography among Moroccan women in Milan.
Mescoli, Elsa ULg

in Toguslu, Erkan; Leman, Johan; Ozdemir, Saliha (Eds.) Everyday Life Practices of Muslims in Europe: Consumption and Aesthetics. (2013, November 28)

My study focuses on the culinary practices of Moroccan women living in Milan hinterland in Italy. By adopting a praxeological approach (Warnier 2001), I study female subjectivation processes realized ... [more ▼]

My study focuses on the culinary practices of Moroccan women living in Milan hinterland in Italy. By adopting a praxeological approach (Warnier 2001), I study female subjectivation processes realized through food. My attention is given to (micro)practices (De Certeau 1980, Foucault in Martin 1993, Mahmood 2005, Mauss 1936) performed daily, by means of which the women considered shape their self and affirm their religious belonging in private and in public contexts. Islamic normativity concerning food issues is at matter here, thus being analyzed in its multifaceted complexity. As a matter of fact, the actors involved need to face the constraints imposed by the migration context while trying to comply with religious rules, in their turns intertwined with remembered embodied practices. This implies some negotiations to be made, in particular concerning a different articulation of time, but also the mobilization of tactics and strategies (De Certeau 1980) to guarantee a reassuring proper self-definition. In the private space, food practices keep on being influenced not only by the Islamic dietary prescriptions affirming what is not possible to eat, but also by the indications stressing what to eat – and eventually when and how to prepare it. A private consumption, reflecting a specific belief, materially informs a spiritual definition of the self. Furthermore, such dynamics go out the domestic context and perform in the public space. Everyday practices, and in particular those related to food, let an expression of Muslim migrants’ identity be realized in overdetermined backgrounds such as that which is under study. As a matter of fact, by preparing and sharing food, Moroccan women participate to local events - and consequently to the city social life - and thus they are allowed to affirm in public their religious belonging and some related claims. The so called “ethnic food” is protagonist of numerous intercultural events, aimed at letting an encounter with religious diversity take place in the perspective of a culture to taste. In those occasions, once a relationship is set up, other important issues can be approached, such as that of the freedom to practice religion. My presentation will try to highlight such complex dynamics, stressing on the materiality of religious subjectivation. Photos and videos recording everyday practices and objects will be used to visually support the reflections presented. De Certeau, Michel (1980). L’invention du quotidien. Tome I. Arts de faire. Paris: Gallimard. Mahmood, Saba (2005). Politics of piety: the Islamic revival and the feminist subject, Princeton, N.J.: Princeton University Press. Martin, Luther H.; Gutman, Huck e Hutton, Patrick H. (eds.) (1992). Tecnologie del sé. Un seminario con Michel Foucault, Torino: Bollati Boringhieri. Mauss, Marcel (1936). Les techniques du corps, in Journal de Psychologie, XXXII, ne, 3-4, 15 mars - 15 avril. Warnier Jean-Pierre (2001). A praxeological approach to subjectivation in a material world, in Journal of Material Culture, Vol. 6(1): 5–24. [less ▲]

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See detailLe zonage de l’insécurité alimentaire du Système d’Alerte Précoce au Niger : l’indice de vulnérabilité
Andres, Ludovic ULg; Lebailly, Philippe ULg

in Actes du Premier Colloque de l'université de Parakou (2013, November 27)

La République du Niger a mis en place à partir de 1989 le Système d’Alerte Précoce (SAP) à cause des crises alimentaires récurrentes. L’objectif du SAP vise à prévenir et gérer les crises alimentaires. La ... [more ▼]

La République du Niger a mis en place à partir de 1989 le Système d’Alerte Précoce (SAP) à cause des crises alimentaires récurrentes. L’objectif du SAP vise à prévenir et gérer les crises alimentaires. La prévention des crises alimentaires est réalisée en décrivant l’état de l’insécurité alimentaire par département. Il est évalué par un indice composite construit à partir de données secondaires récoltées par des fiches d’identification durant le mois d’octobre. L’objectif de l’article est de décrire la méthode d’évaluation de l’indice et d’étudier l’évolution de l’indice de vulnérabilité. L’étude de l’évolution de l’indice de vulnérabilité du SAP est réalisée grâce à l’étude d’une série chronologique. Les tendances évolutives seront caractérisées pour la période allant de 1992 à 2011, soit l’évolution de l’indice sur vingt ans. L’étude de l’indice du SAP nous permettra de valider les observations que nous avons déjà réalisées dans certains articles abordant les méthodes d’évaluation de la vulnérabilité alimentaire. Le zonage géographique des indices des 37 départements du Niger montre une différence entre les départements pastoraux, agropastoraux et agricoles (Andres L. et Lebailly Ph., 2011a ; Andres L. et Lebailly Ph., 2011b ; Andres L. et Lebailly Ph., 2012 ; Andres L., 2012). En outre, nos résultats démontreront l’aspect conjoncturel des crises alimentaires sans montrer une tendance générale en fonction des départements et des systèmes de production même si les départements présentent une résilience. [less ▲]

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See detailPerspectives offertes par la culture en association de froment et de pois protéagineux d’hiver
Pierreux, Jérome ULg; Delaplace, Pierre ULg; Roisin, Christian et al

in Autonomie protéique et biométhanisation à la ferme (2013, November 27)

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See detailNumerical modelling of the excavated damaged zone in Boom Clay
Salehnia, Fatemeh ULg; charlier, robert; levasseur, Séverine

in International Workshop on Geomechanics and Energy 2013 (2013, November 26)

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See detailL’innovation "autonome" en agriculture de conservation : Du désintérêt vis-à-vis des acteurs historiques du développement agricole à la quête d’une alliance renouvelée avec la recherche scientifique
Dannevoye, Bastien ULg; Vankeerberghen, Audrey ULg; Stassart, Pierre M ULg

in Actes du colloque "Nouvelles formes d’agriculture : pratiques ordinaires, débats publics et critique sociale", INRA Dijon (2013, November 21)

Cette communication présente plusieurs raisons de l’organisation autonome de l’expérimentation et de l’innovation agronomiques, en matière de durabilité et de gestion des sols, au sein de groupes ... [more ▼]

Cette communication présente plusieurs raisons de l’organisation autonome de l’expérimentation et de l’innovation agronomiques, en matière de durabilité et de gestion des sols, au sein de groupes d’agriculteurs et de techniciens se revendiquant d’une agriculture "sans labour" et/ou "de conservation", en France et en Belgique (Région Wallonne). Après un rappel du développement historique des "techniques sans labour" dans les régions enquêtées, la communication rentre dans le détail des motivations des agriculteurs. Celles-ci ont été rassemblées en deux grandes catégories de "critiques" : les critiques envers la recherche agronomique publique, et les critiques envers les acteurs privés de l’agrofourniture. En nous référant à la théorie de l’acteur-réseau (Callon, 1986), nous comprenons ces critiques comme des éléments essentiels d’une dynamique de désintéressement vis-à-vis des traductions historiques de ces acteurs institutionnels ou économiques, cherchant par-là à montrer comment ce désintéressement peut constituer une justification suffisante à la (re)prise en charge de l’innovation par les praticiens. Ces derniers rejettent ainsi le schéma de développement agronomique dit "diffusionniste" hérité de la Seconde Guerre mondiale, selon lequel les missions de recherche et d’innovation avaient été confiées respectivement à des instituts publics de recherche agronomique et aux firmes. En conclusion, nous montrons que ces critiques sont loin d’être des attitudes "anti-scientifiques" ou "anti-marché" mais expriment au contraire des volontés de rencontres et de travail collaboratif renouvelé entre ces acteurs ou ces "rôles prescrits". Les acteurs "désintéressés" de traductions anciennes deviennent ainsi les promoteurs d’une nouvelle problématisation [less ▲]

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See detailLes semences non-industrielles : une hétérogénéité de pratiques mettant en cause le fixisme
Hecquet, Corentin ULg

in Les semences non-industrielles : une hétérogénéité de pratiques mettant en cause le fixisme (2013, November 20)

Les débats concernant les semences occupent depuis quelques années l’espace public. Se centrer sur cet objet permet de comprendre comment se construit une critique par des discours (dénonciation) et des ... [more ▼]

Les débats concernant les semences occupent depuis quelques années l’espace public. Se centrer sur cet objet permet de comprendre comment se construit une critique par des discours (dénonciation) et des pratiques (proposition). Ces enjeux scientifiques s’inscrivent dans une perspective agroécologique (Stassart, Baret et al. 2012). La critique porte sur le processus de désappropriation des semences et des connaissances et s’inscrit dans le paradigme productiviste (Bonneuil C. , Demeulenaere E. et al. 2006). Ma question de recherche au sujet des différentes constructions de qualification des semences non industrielles se fonde sur mes lectures reprises dans un état des lieux (partie 1). Par semences non industrielles j’entends celles qui ne sont pas inscrites dans une perspective productiviste. Afin de décrypter, j’utilise un cadre analytique constitué de trois catégories questions (la caractérisation ; les modes organisationnels et de circulation ; le positionnement juridico-politique). Ce cadre offre une lecture des tensions et synergies au sein de chacun des cas repris dans la deuxième partie (Kaol Kohz ; Kokopelli ; Semailles ; Bionatur). Leur hétérogénéité balise les cas d’étude. Ils offrent à comprendre les différentes stratégies développées par les pratiques des porteurs de projet, elles vont de l’utilisation du dispositif déployé par le régime semencier à la désobéissance en vue de qualifier leurs semences. Il est également nécessaire de comprendre comment chacun des projets parvient à chercher/maintenir sa proposition. Ce papier ambitionne non à présenter des résultats, mais plutôt comment produire des résultats sur cette question. [less ▲]

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See detailLaser-induced contamination and its impact on laser damage threshold
Schröder, H; Wagner, P; Kokkinos, Dimitrios ULg et al

in Laser-induced contamination and its impact on laser damage threshold (2013, November 14)

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See detailLa redéfinition du premier ordre au début de la Renaissance : l'exemple du cardinal d'Amboise
Dumont, Jonathan ULg

in Dumont, Jonathan; Fagnart, Laure (Eds.) Georges Ier d'Amboise. 1460-1510. Une figure plurielle de la Renaissance. Actes du colloque tenu à l'Université de Liège les 2 et 3 décembre 2010 (2013, November 08)

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See detailSEDIMENTARY DEVELOPMENT AND MAGNETIC SUSCEPTIBILITY OF THE FRASNIAN CARBONATE PLATFORM IN WESTERN BELGIUM (DINANT SYNCLINORIUM, LA THURE SECTION)
Pas, Damien ULg; Da Silva, Anne-Christine ULg; Labaye, Corentin et al

in 14 ième ASF 2013 (Association des Sédimentologistes Français) (2013, November 07)

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See detailAthena+: The first Deep Universe X-ray Observatory
Barret, D.; Nandra, K.; Barcons, X. et al

in Cambresy, L.; Martins, F.; Nuss, E. (Eds.) et al SF2A-2013: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics (2013, November 01)

The Advanced Telescope for High-energy Astrophysics (Athena+) is being proposed to ESA as the L2 mission (for a launch in 2028) and is specifically designed to answer two of the most pressing questions ... [more ▼]

The Advanced Telescope for High-energy Astrophysics (Athena+) is being proposed to ESA as the L2 mission (for a launch in 2028) and is specifically designed to answer two of the most pressing questions for astrophysics in the forthcoming decade: How did ordinary matter assemble into the large scale structures we see today? and how do black holes grow and shape the Universe? For addressing these two issues, Athena+ will provide transformational capabilities in terms of angular resolution, effective area, spectral resolution, grasp, that will make it the most powerful X-ray observatory ever flown. Such an observatory, when opened to the astronomical community, will be used for virtually all classes of astrophysical objects, from high-z gamma-ray bursts to the closest planets in our solar neighborhood. In this paper, we briefly review the core science objectives of Athena+, present the science requirements and the foreseen implementation of the mission, and illustrate its transformational capabilities compared to existing facilities. [less ▲]

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See detailDEPOSITIONAL ENVIRONMENT OF THE EARLY FRASNIAN TO EARLY FAMENNIAN SLOPE DEPOSITS OF MOUNT FREIKOFEL (CARNIC ALPS, AUSTRIA/ITALY)
Pas, Damien ULg; Da Silva, Anne-Christine ULg; suttner, Thomas et al

in 14 ième ASF 2013 (Association des Sédimentologistes Français) (2013, November)

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See detailContribution à la recherche des conditions optimales pour élever des lapins en parcs hors sol : Résultats d’un centre de référence et d’expérimentation en Belgique en conditions de production
Jacquet, Michel; Bauwens, Véronique; Teller, Christian et al

in Itavi (Ed.) Proceedings 15ème journées de la recherche cunicole (2013, November)

L’évolution de la perception sociétale du bien-être animal et de l'élevage engage la production à chercher des alternatives aux cages conventionnelles. Dans cette expérimentation en engraissement en ... [more ▼]

L’évolution de la perception sociétale du bien-être animal et de l'élevage engage la production à chercher des alternatives aux cages conventionnelles. Dans cette expérimentation en engraissement en conditions de production, durant un an, les performances (techniques et statut sanitaire) ont été suivies dans un logement en parcs hors sol (bâtiment 1), sur plancher en caillebotis en plastique normalement conçu pour porcelets, enrichis avec une plate-forme surélevée, matériau à ronger et cachette. Sans effectuer une comparaison scientifique de deux systèmes (parc hors sol et cage), les auteurs situent les performances enregistrées en parcs durant 7 bandes (960 lapins par bande) vis-à-vis de celles obtenues simultanément dans le même élevage, dans un logement en cages conventionnelles et enrichies (bâtiment 2), en tout plein tout vide (7 bandes et 4200 lapins par bande). Les parcs hors sol, a priori profitables au bien-être animal, non bivalents (donc changement au sevrage) ont été défavorables à la santé des lapins et à la viabilité de la production. La coccidiose intestinale a contribué à une hausse sévère de la mortalité (13,8% contre 4,8% en cages) ; de fortes baisses de performances techniques et économiques ont été constatées et la situation a contraint à un traitement anticoccidien. [less ▲]

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See detailRecent advances in the biomonitoring of trace elements using P. oceanica (L.) Delile
Gobert, Sylvie ULg; Richir, Jonathan ULg

in de Lange, Gert J.; Gacic, Miroslav; Romaña, Axel (Eds.) et al 40th CIESM Congress Proceedings (2013, November)

One of the most studied bioindicator in the Mediterranean is the seagrass Posidonia oceanica. Trace element (TE) monitoring surveys using that species have however mostly focussed on a few elements (e.g ... [more ▼]

One of the most studied bioindicator in the Mediterranean is the seagrass Posidonia oceanica. Trace element (TE) monitoring surveys using that species have however mostly focussed on a few elements (e.g. Pb, Cd), while numerous others, efficiently bioconcentrated by the plant and potentially toxic, have been barely or not studied (e.g. Ag, V, Bi). Furthermore, although P. oceanica bioaccumulation behaviour relies on synergistic effects between the sampling environment and its ecophysiology, this aspect has been mostly underestimated until now. This study presents recent advances in the biomonitoring of TEs using P. oceanica and insists on the necessity of developing consensual monitoring protocols in order to improve its use as bioindicator. [less ▲]

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See detailRoles of Civic Priests in Hellenistic Cos
Paul, Stéphanie 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, November)

The abundance and interest of the epigraphic evidence from the is- land of Cos after the synoecism of 366 BC makes it a very valuable case-study for understanding how the religious life of a polis was ... [more ▼]

The abundance and interest of the epigraphic evidence from the is- land of Cos after the synoecism of 366 BC makes it a very valuable case-study for understanding how the religious life of a polis was organized in the Hellenistic period. The topic of civic priesthoods is particularly well documented by various types of inscriptions, such as priesthood regulations, sacrificial calendars and contracts of sales. Based on a close study of this evidence, this paper will exa- mine the roles played by priests in the cults of the gods of the civic pantheon, as well as the relationship between these officials and the polis which appointed them. It will address as its main question how the priest’s position as mediator between the polis community and the divine sphere was manifested. [less ▲]

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See detailLe mode excentrique appliqué aux rotateurs d'épaule
Forthomme, Bénédicte ULg; Kaux, Jean-François ULg; Crielaard, Jean-Michel ULg et al

in Livret des interventions - XVèmes Rencontres Médimex - "Isocinétisme - Actualités et Controverses" (2013, November)

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See detailLe Silurien – Dévonien du Bassin de Berkine (Algérie) : Étude des niveaux réservoirs et de la série des argiles pour les projets «Shale Gas»
Djouder, Hocine ULg; Murat, Bruno; Musial, Geoffray et al

in 14ème Congrès Français de Sédimentologie (2013, November)

Situé dans le Sud Est algérien, à la limite des frontières algéro-tunisienne et libyenne, le Bassin de Berkine est un bassin intracratonique qui s’étend sur près de 102 000 km2. Au Paléozoïque inférieur ... [more ▼]

Situé dans le Sud Est algérien, à la limite des frontières algéro-tunisienne et libyenne, le Bassin de Berkine est un bassin intracratonique qui s’étend sur près de 102 000 km2. Au Paléozoïque inférieur, cette étendue était le siège d’une sédimentation silicoclastique puissante. Cette étude est focalisée sur le Silurien et le Dévonien. Car le Bassin de Berkine renferme des réservoirs potentiels : Alternances argilo-gréseuses (AAG) du Silurien sommital et les grès massifs du Lochkovien-Praguien et Emsien. Mais également des roches mère, telle que les argiles radioactives du Silurien, très mature, et du Frasnien. En effet, les gisements atypiques non-conventionnels, à roches sédimentaires faiblement perméables, constituent une source pétrolière majeure d’où un regain d’intérêt potentiel au sein du Bassin de Berkine. Au total 146 puits et une dizaine de carottes ont fait l’objet d’une analyse de facies/électrofacies et de stratigraphie séquentielle haute résolution. Ceci est dans le but de caractériser les séquences de dépôts et leurs environnements respectifs, puis de prédire la géométrie-cartographie des corps sédimentaires. Au final, de caractériser les propriétés pétrophysiques des « Plays » potentielles. Cinq séquences principales sont mises en évidence pour le Silurien, dans le secteur de Menzel Lejmat et le Sillon de Marfag, du Bassin de Berkine. Les séquences Si-1 et Si-2 sont datées du Llandoverien. Au cours de cette période, le bassin était le siège d’une importante sédimentation argileuse de « Hot Shales » et d’Argiles à Graptolites de 500 à 650 m d’épaisseur. Ces faciès argileux de plateforme externe profonde passent au sommet à des faciès carbonatés très vite succédés par des sédiments gréseux (séquences Si-3, Si-4 et Si-5) initiateurs d’un contexte deltaïque progradant du Sud vers le Nord. Au Dévonien, les séquences Si-6, formation Tadrart (Lochkovien et Pragien) et Si-7 (Emsien) à grès massifs fluviatile-estuarien sont affectés par des minéraux Authigènes, tels que la Chamosite. Ces revêtements chloriteux des grains préserve la porosité mais réduisent la perméabilité et contribuent à la destruction des propriétés pétrophysiques de ces réservoirs. La séquence Si-8 (Eifélien-Givétien) atteint 110 m d’épaisseur est essentiellement carbonatée. Par la suite, l’installation définitive des argiles radioactives du Frasnien-Fammenien (séquence Si-9) en discordance. [less ▲]

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See detail(Tentative) Conclusions of the Conference
Paile, Sylvain ULg

in Paile, Sylvain; Gell, Harald (Eds.) 5 years of the European Initiative for the Exchange of Young Officers Inspired by Erasmus, Lessons Learnt from the International Military Academies Forum 2013 (2013, November)

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See detailLa qualité de force relative : paramètre sous-exploité ?
Croisier, Jean-Louis ULg; Delvaux, François ULg; Cordonnier, Caroline ULg et al

in Livret des interventions - XVèmes Rencontres Médimex - "Isocinétisme - Actualités et Controverses" (2013, November)

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See detailLa photographie de mode, entre transition er classicisme. Le cas Prada
Dondero, Maria Giulia ULg

in Villelongue, Martine; Saroli, Julie (Eds.) Défier le temps, une affaire de mode (2013, November)

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See detailEvaluation of arabinoxylan oligosaccharides on physicochemical properties of chitosan based films
Costa, Maria J.; Cerqueira, Miguel A.; Ruiz, Hector A. et al

in Lagarón, José M.; Cabedo, Luis; López, Amparo (Eds.) et al Polymar 2013 [Recurs electrònic]: 1st. International Conference in polymers with special focus in early stage researchers (2013, November)

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See detailRééducation des plasties du LCA : quels pièges ?
Croisier, Jean-Louis ULg; BAUVIR, Philippe ULg; NAMUROIS, Marie-Hélène ULg et al

in Abstract Book du Symposium d'Axxon - Actualité en Kinésithérapie (2013, November)

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See detailConstraining ALPs with linear and circular polarisation measurements of quasar light
Payez, Alexandre ULg

in Oberlack, Uwe; Sissol, Pierre (Eds.) 9th Patras Workshop on Axions, WIMPs and WISPs (2013, November)

We discuss the constraints derived on the mixing of photons with light pseudoscalars using the distributions of good-quality linear and circular polarisation measurements of light from the least polarised ... [more ▼]

We discuss the constraints derived on the mixing of photons with light pseudoscalars using the distributions of good-quality linear and circular polarisation measurements of light from the least polarised classes of quasars. We also provide the dependence of our limit on the average electron density in the local supercluster for nearly massless particles. [less ▲]

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See detailCord blood banking Introduction-State of the art
BAUDOUX, Etienne ULg

in Gluckman, Eliane; Cavazzana (Eds.) World Cord blood congress IV and innovative therapies for sickle cell disease (2013, October 25)

Since the early years 1990 when the first cord blood (CB) banks were created, the worldwide inventory has grown considerably to a current 590 thousand units that complement the 22 M donors to provide ... [more ▼]

Since the early years 1990 when the first cord blood (CB) banks were created, the worldwide inventory has grown considerably to a current 590 thousand units that complement the 22 M donors to provide hematopoietic progenitor cells (HPC) to patients in need of an allogeneic transplantation. The existing inventory shows a high degree of heterogeneity with a significant number of units below the current transplantation standards for adult patients. In the mean time, the use of CB as a HPC source has remained steady over the last years, leading to a relative decrease in the release activity in each individual bank. New challenges and innovations have emerged, such as: • More stringent regulations in the USA and in the EU • Upgrades in professional standards • Competing transplantation approaches such as easier access to adult unrelated donors (UD), use of haplo identical donors, single or multiple CB transplantation • CB collection safety becoming a concern since issues have been raised about the outcome of newborns linked to their iron status • The definition of clear criteria for transplant selection (HLA typing level, cell contents) • Potential role of CB banks in non hematological CB use (use of CB byproducts, generation of iPS from selected universal donors, immunotherapy, HIV therapy) • Financial restrictions The elements mentioned above have lead banking strategies, including recruitment, donor selection, CB collection, processing, storage and release to evolve considerably and to incorporate • Active volunteer accreditation processes for international recognition • Donor recruitment: more detailed and selective donor evaluation • Systematic nucleic acid (NAT) testing for infectious disease markers (IDM) • Extensive use of molecular HLA typing and widening range of loci to be taken into account • Evolving definition of acceptance criteria for incoming CB units, (i.e. stricter TNC requirements) • Well standardized processing and storage methods • Evaluation and adaptation of supply vs. needs in strategic approaches • Need to increase and optimize CB visibility through up to date electronic solutions • Methods to have a permanent and up to date overview of post transplantation outcomes, including elements relevant to the banking and clinical side Professional organizations (NetCord, WMDA, FACT, WBMT) are in the process of tightening their links in order to increase interactions and respond in time to upcoming challenges and evolutions of the field. [less ▲]

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See detailFermentable Carbohydrates and dietary protein level differently shape the bacterial community structure in the proximal colon of pigs
Boudry, Christelle ULg; Pieper, Robert; Vahjen, Wilfried et al

in International workshop on nutrition and intestinal microbiota host interaction in the pig : Book of abstracts (2013, October 24)

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See detailInteraction between dietary protein level and source of fermentable carbohydrates in the gastrointestinal tract of pigs
Pieper, Robert; Boudry, Christelle ULg; Vahjen, Wilfried et al

in International workshop on nutrition and intestinal microbiota host interaction in the pig : Book of abstracts (2013, October 24)

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See detailBifocal intracranial germinoma : is biopsy still mandatory ?
KREUTZ, Julie ULg; TSHIBANDA, Luaba ULg; BONNEVILLE, Jean-François ULg et al

in 23rd meeting of the Belgian Endocrine Society - Abstract book (2013, October 19)

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See detailModification of hormonal secretion in macroprolactinoma on treatment
VROONEN, Laurent ULg; Rostomyan, Liliya ULg; Potorac, Iulia ULg et al

in 23rd meeting of the Belgian Endocrine Society - Abstract book (2013, October 19)

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See detailNovel fibroblast growth factor receptor 1 mutation causing normosmic idiopathic hypogonadotropic hypogonadism
Chachati, Anne-Sophie ULg; Potorac, Iulia ULg; DEBRAY, François-Guillaume ULg et al

in 23rd meeting of the Belgian Endocrine Society - Abstract book (2013, October 19)

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See detailPituitary magnetic resonance imaging in gigantism : first result after analysis of 16 cases
BECK, Emmanuel ULg; KREUTZ, Julie ULg; TSHIBANDA, Luaba ULg et al

in 23rs meeting of the Belgian Endocrine Society - Abstract book (2013, October 19)

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