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See detailContexte géologique des sites mésolithiques de la Heid de Fer et de L’Ourlaine à Becco (Theux, Belgique)
Marion, Jean-Marc ULg; Simons, Justine; Mottequin, Bernard ULg

in Autour de l'hématite - Circulation et transformation au cours de la préhistoire récente. Méthodes d'analyse (2013, February)

The use of natural resources is a major source of information to study the socio-economic organization of the population from Prehistory to Antiquity, due to the fact that their exchange networks and ... [more ▼]

The use of natural resources is a major source of information to study the socio-economic organization of the population from Prehistory to Antiquity, due to the fact that their exchange networks and behaviors changed together with their lifestyles and know-how. If flint or other materials such as shale have been extensively studied, haematite, and particularly the oolitic haematite, remains hardly investigated as a material in terms of its origin and technical methods of utilization. The mesolithic sites of "L'Ourlaine" and the "Heid de Fer" (Becco, Theux, southern Belgium) are very close to an important Famennian (Upper Devonian) oolitic haematite outcrop. [less ▲]

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See detailAutomated platform for the quality control of PET-CT scanners following AFCN/FANC recommendations
Bernard, Claire ULg; Paulus, Cyril; JODOGNE, Sébastien ULg et al

in Proceedings of the Belgian Hospital Physicists Association Symposium (2013, February)

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See detailEosinophile Bronchopneumonie
Clercx, Cécile ULg

in Proceedings of the 34. Internationaler Fortbildungskurs Kleintierkrankheiten : “Thorax – Herz- und Lungenerkrankungen" - Flims -Switzerland (2013, February)

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See detailLungenfibrose
Clercx, Cécile ULg

in Proceedings of the 34. Internationaler Fortbildungskurs Kleintierkrankheiten : “Thorax – Herz- und Lungenerkrankungen" - Flims -Switzerland (2013, February)

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See detailGrowth, development and metabolic programming in premature infants
SENTERRE, Thibault ULg

in 8th International Neonatal Conference (2013, February)

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See detailNutritional requirements for premature infants
SENTERRE, Thibault ULg

in 8th International Neonatal Conference (2013, February)

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See detailChronische. Bronchitis Hund
Clercx, Cécile ULg

in Proceedings of the 34. Internationaler Fortbildungskurs Kleintierkrankheiten : “Thorax – Herz- und Lungenerkrankungen" - Flims -Switzerland (2013, February)

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See detailOrthanc - Lightweight, scriptable DICOM server for image management in radiotherapy departments
JODOGNE, Sébastien ULg; Sobczak, Sonia; DEVILLERS, Magali ULg et al

in Proceedings of the Belgian Hospital Physicists Association Symposium (2013, February)

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

in Destain, Jean-Pierre; Bodson, Bernard (Eds.) Livre Blanc Céréales (2013, February)

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See detailBakterielle und virale Pneumonien
Clercx, Cécile ULg

in Proceedings of the 34. Internationaler Fortbildungskurs Kleintierkrankheiten : “Thorax – Herz- und Lungenerkrankungen" - Flims -Switzerland (2013, February)

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See detailNouveaux modes d’action publique en faveur de la transition des quartiers urbains vers un développement durable.
Ruelle, Christine ULg; Stangherlin, Gregor; Teller, Jacques ULg

in Van Ypersele, Jean-Pascal; Hudon, Marek (Eds.) 1er Congrès Interdisciplinaire du Développement Durable - Thème 5: Rôle des pouvoirs publics dans la transition. (2013, January 31)

L’article aborde la question de l’action publique visant à promouvoir le développement durable des quartiers urbains existants. En particulier, il envisage la pertinence de développer cette action à ... [more ▼]

L’article aborde la question de l’action publique visant à promouvoir le développement durable des quartiers urbains existants. En particulier, il envisage la pertinence de développer cette action à partir d’une réorientation de la « politique des quartiers », modalité de l’action publique héritée de la fin du XXème siècle. Les structures publiques de quartier mises en place dans le cadre de cette politique pourraient en effet jouer un rôle d’accélérateurs de la transition de ces quartiers. Elles ont le potentiel pour cela, notamment grâce au réseau social qu’elles développent au sein de la population locale, sans l’engagement de laquelle les pouvoirs publics peuvent bien peu de choses. L’article envisage ensuite la pertinence d’une généralisation de cette politique à tous les quartiers urbains, selon des intensités variables et en complémentarité avec les politiques urbaines plus stratégiques, afin d’assurer un développement équilibré de nos territoires. [less ▲]

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See detailA multiaxial constitutive model for concrete in the fire situation
Gernay, Thomas ULg; Franssen, Jean-Marc ULg

in Proceedings of the 13th Fire and Materials Conference (2013, January 28)

Performance-based design in fire engineering leads to increasing demand for advanced temperature-dependent material models for the load bearing materials used in building structures. These models must be ... [more ▼]

Performance-based design in fire engineering leads to increasing demand for advanced temperature-dependent material models for the load bearing materials used in building structures. These models must be valid in natural fire situations including cooling down phase and must be sufficiently robust for complex numerical calculations such as, for example, the analysis of tensile membrane action in composite slabs. Although structural concrete is widely used in civil engineering, proper modelling of its thermo-mechanical behaviour remains a challenging issue for engineers mainly because of the complexity of the phenomena that result from the microcracking process in this material and because of the necessity to ensure the numerical robustness of the models. This paper presents a new multiaxial concrete model based on a plastic-damage formulation and developed to meet the specific requirements of structural fire engineers and researchers. The model, which incorporates an explicit term for transient creep strain and encompasses a limited number of material parameters, has been implemented in a finite element software dedicated to the nonlinear analysis of structures in fire. The paper presents a series of numerical simulations conducted to highlight the model ability to capture the main phenomena that develop in concrete under fire (permanent strains, degradation of the elastic properties, unilateral effect) as well as its ability to be used for the fire analysis of large-scale structural elements. As an example, the new concrete model is used in the numerical analysis of a full scale fire test on a composite steel-concrete slab and it is shown that the computed and measured results agree. [less ▲]

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See detail2009: A Colliding-Wind Odyssey
Fahed, R.; Moffat, A. F. J.; Zorec, J. et al

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

We present the results from two optical spectroscopic campaigns on colliding-wind binaries (CWB) which both occurred in 2009. The first one was on WR 140 (WC7pd + O5.5fc), the archetype of CWB, which ... [more ▼]

We present the results from two optical spectroscopic campaigns on colliding-wind binaries (CWB) which both occurred in 2009. The first one was on WR 140 (WC7pd + O5.5fc), the archetype of CWB, which experienced periastron passage of its highly elliptical 8-year orbit in January. The WR 140 campaign consisted of a unique and constructive collaboration between amateur and professional astronomers and took place at half a dozen locations, including Teide Observatory, Observatoire de Haute Provence, Dominion Astrophysical Observatory, Observatoire du Mont-Mégantic and at several small private observatories. The second campaign was on a selection of 5 short-period WR + O binaries not yet studied for colliding-wind effects: WR 12 (WN8h), WR 21 (WN5o + O7 V), WR 30 (WC6 + O7.5 V), WR 31 (WN4o + O8), and WR 47 (WN6o + O5). The campaign took place at Leoncito Observatory, Argentina, during 1 month. We provide updated values of most of these systems for the orbital parameters, new estimates for the WR and O star masses and new constraints on the mass-loss rates and colliding wind geometry. [less ▲]

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See detailMassive Non-Thermal Radio Emitters: New Data and their Modeling
Volpi, D.; Blomme, R.; De Becker, Michaël ULg et al

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

During recent years some non-thermal radio emitting OB stars have been discovered to be binary or multiple systems. The non-thermal emission is due to synchrotron radiation that is emitted by electrons ... [more ▼]

During recent years some non-thermal radio emitting OB stars have been discovered to be binary or multiple systems. The non-thermal emission is due to synchrotron radiation that is emitted by electrons accelerated up to high energies. The electron acceleration occurs at the strong shocks created by the collision of radiatively-driven winds. Here we summarize the available radio data and more recent observations for the binary Cyg OB2 No. 9. We also show a new emission model which is being developed to compare the theoretical total radio flux and the spectral index with the observed radio light curves. This comparison will be useful in order to solve fundamental questions, such as the determination of the stellar mass-loss rates, which are perturbed by clumping. [less ▲]

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See detailGAUFRE: a tool for an automated determination of atmospheric parameters from spectroscopy
Valentini, Marica ULg; Morel, Thierry ULg; Miglio, Andrea et al

in 40th Liege International Astrophysical Colloquium 'Ageing low-mass stars: from red giants to white dwarfs' (2013, January 01)

We present an automated tool for measuring atmospheric parameters (T_eff, log(g), [Fe/H]) for F-G-K dwarf and giant stars. The tool, called GAUFRE, is written in C++ and composed of several routines ... [more ▼]

We present an automated tool for measuring atmospheric parameters (T_eff, log(g), [Fe/H]) for F-G-K dwarf and giant stars. The tool, called GAUFRE, is written in C++ and composed of several routines: GAUFRE-RV measures radial velocity from spectra via cross-correlation against a synthetic template, GAUFRE-EW measures atmospheric parameters through the classic line-by-line technique and GAUFRE-CHI2 performs a chi^2 fitting to a library of synthetic spectra. A set of F-G-K stars extensively studied in the literature were used as a benchmark for the program: their high signal-to-noise and high resolution spectra were analysed by using GAUFRE and results were compared with those present in literature. The tool is also implemented in order to perform the spectral analysis after fixing the surface gravity (log(g)) to the accurate value provided by asteroseismology. A set of CoRoT stars, belonging to LRc01 and LRa01 fields was used for first testing the performances and the behaviour of the program when using the seismic log(g). [less ▲]

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See detailAre Magnetic OB Stars More Prone to Mixing? Still an Unsettled Issue
Morel, Thierry ULg

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

We review our knowledge of the mixing properties of magnetic OB stars and discuss whether the observational data presently available support, as predicted by some theoretical models, the idea that ... [more ▼]

We review our knowledge of the mixing properties of magnetic OB stars and discuss whether the observational data presently available support, as predicted by some theoretical models, the idea that magnetic phenomena favour the transport of chemical elements. A (likely statistical) relationship between enhanced mixing and the existence of a field has been emerging over the last few years. As discussed in this contribution, however, a clear answer to this question is presently hampered by the lack of large and well-defined samples of magnetic and non-magnetic stars. [less ▲]

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See detailX-Ray Plasma Temperature Distribution in the Wind of ζ Puppis
Hervé, Anthony ULg; Rauw, Grégor ULg; Nazé, Yaël ULg

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

Different scenarios try to explain the X-ray production in the O-type star wind (magnetic confinement, embedded shocks…) and their plasma temperature distribution. In this context, we have developed a new ... [more ▼]

Different scenarios try to explain the X-ray production in the O-type star wind (magnetic confinement, embedded shocks…) and their plasma temperature distribution. In this context, we have developed a new modeling code which computes synthetic spectra as a function of plasma temperature, abundances, and localization of the X-ray emitting shell in the wind. Then we combine several synthetic spectra in order to fit the observed high-resolution spectra. Our preliminary results on ζ Puppis reveal a non-porous wind as well as non-solar abundances for the CNO elements. More important, an extended region with a low temperature plasma begins to emit close to the star surface while small shells with hotter temperature plasmas emit farther in the wind. [less ▲]

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See detailQuantitative NIR Spectroscopy of Massive Stars
Sana, H.; Stap, F. A.; de Koter, A. et al

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

Interest for near-infrared (NIR) spectroscopy of massive stars has been dramatically increasing over the last decade. Because it allows one to observe objects inaccessible at optical wavelengths due to ... [more ▼]

Interest for near-infrared (NIR) spectroscopy of massive stars has been dramatically increasing over the last decade. Because it allows one to observe objects inaccessible at optical wavelengths due to absorption, the infrared domain offers a privileged window to study highly extinguished objects. Yet, a detailed calibration of the massive star properties at NIR wavelength is still missing. Following the lines of the work of Repolust et al. (2005), we have acquired high resolution spectroscopy of several nearby massive stars using VLT/CRIRES, focusing on spectral lines of interest in the J, H, K, and L bands. In this work, we present the earliest results of our quantitative spectroscopic analysis of the main sequence stars in our sample. Using the unique combination of a genetic algorithm approach with the state-of-the-art non-LTE atmosphere model FASTWIND, we compare the stellar and wind properties as derived from the optical and the NIR regime. [less ▲]

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See detailNew INTEGRAL Observations of η Carinae Close to Periastron
Leyder, J.-C.; Walter, R.; Rauw, Grégor ULg

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

The soft X-ray thermal emission of η Carinae varies strongly around the periastron, following the orbital period of 5.5 yr. We studied the hard X-ray non-thermal emission of η Car using new INTEGRAL ... [more ▼]

The soft X-ray thermal emission of η Carinae varies strongly around the periastron, following the orbital period of 5.5 yr. We studied the hard X-ray non-thermal emission of η Car using new INTEGRAL observations taken close to periastron. We showed that the hard X-ray emission is very likely to be associated with η Car, and not with any other source found within the INTEGRAL error circle. We also showed that the 3-σ detection during the soft X-ray minimum is consistent with a hydrogen column density that does not exceed 6×10[SUP]23[/SUP] cm[SUP]-2[/SUP]. [less ▲]

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See detailCoRoT Observations of O Stars: Diverse Origins of Variability
Blomme, R.; Briquet, Maryline ULg; Degroote, P. et al

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

Six O-type stars were observed continuously by the CoRoT satellite during a 34.3-day run. The unprecedented quality of the data allows us to detect even low-amplitude stellar pulsations in some of these ... [more ▼]

Six O-type stars were observed continuously by the CoRoT satellite during a 34.3-day run. The unprecedented quality of the data allows us to detect even low-amplitude stellar pulsations in some of these stars (HD 46202 and the binaries HD 46149 and Plaskett's star). These cover both opacity-driven modes and solar-like stochastic oscillations, both of importance to the asteroseismological modeling of O stars. Additional effects can be seen in the CoRoT light curves, such as binarity and rotational modulation. Some of the hottest O-type stars (HD 46223, HD 46150 and HD 46966) are dominated by the presence of red-noise: we speculate that this is related to a sub-surface convection zone. [less ▲]

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See detailQu’est-ce qu’une preuve de développement de compétence ? Témoignages autour de la récolte et de l’analyse critique de preuves de développement de compétences dans deux programmes faisant usages du portfolio pour l’évaluation finale de leurs étudiants
Poumay, Marianne ULg; Georges, François ULg

in Actes du 25ème colloque de l’ADMEE-Europe Fribourg - Evaluation et autoévaluation, quels espaces de formation (2013, January)

Il n’est pas « naturel » pour l’apprenant d’entrer dans une logique par laquelle il lui revient de démontrer ses progrès. Dans le présent article, nous tentons de mieux cerner la notion de preuves au ... [more ▼]

Il n’est pas « naturel » pour l’apprenant d’entrer dans une logique par laquelle il lui revient de démontrer ses progrès. Dans le présent article, nous tentons de mieux cerner la notion de preuves au travers de portfolios réalisés par des enseignants et formateurs inscrits dans deux programmes de l’université de Liège (Belgique). [less ▲]

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See detailWindelband on Beurteilung
Dewalque, Arnaud ULg

in Van der Schaar, Maria (Ed.) Judgement and the Epistemic Foundation of Logic (2013, January)

A main challenge for philosophers of the late nineteenth and early twentieth century was to construct judgements as acts of decision or position (thesis) rather than as acts of combination or synthesis ... [more ▼]

A main challenge for philosophers of the late nineteenth and early twentieth century was to construct judgements as acts of decision or position (thesis) rather than as acts of combination or synthesis. Let us call this the thetic view. Franz Brentano (1838–1917) is usually regarded as the best supporter of this view, since he takes advantage of the Kantian-Herbartian notion of ‘position’ (Setzung) to break with the traditional definition of judgement as symplokè (Martin 2006, 64 sq.; see Brentano 2008, 335). Generally speaking I think this usual line of interpretation is quite cor- rect, yet it could benefit from a more detailed account of the Brentano reception. What I would like to suggest is this: At stake in Brentano’s legacy is not just the rejection of the synthetic view but also the way in which the thetic dimension is itself conceived. There are, in fact, various ways of constructing judgements as thetic or positional phenomena. Brentano’s notion of ‘existential assertion’ is not the only way to do so. [less ▲]

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See detailLinearized Power Flow Equations Based Predictive Control of Transmission Voltages
Hajian, Mahdi; Rosehart, William; Glavic, Mevludin et al

in Proceedings of the 46th Hawaii International Conference on System Sciences (HICSS-46) (2013, January)

In this paper, an approach based on the concept of Model Predictive Control (MPC) is used to control transmission voltages and prevent long-term voltage instability. The MPC model is based on a linearized ... [more ▼]

In this paper, an approach based on the concept of Model Predictive Control (MPC) is used to control transmission voltages and prevent long-term voltage instability. The MPC model is based on a linearized steady-state system model derived from power flow equations. Simulation results are presented for the case of Nordic32 test system. [less ▲]

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See detailA nap to recap: Reward strengthens relational memory during daytime sleep
Igloi, Kinga; Gaggioni, Giulia ULg; Eryilmaz, Hamdi et al

in Abstract book of the ABIM meeting (2013, January)

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See detailFrom Fritz Teufel to Leo Bassi : Happening and provocation. Just a History of Overbidding and Inflation?
Hamers, Jérémy ULg

in Utopia and Critical Thinking in the Creative Process (2013, January)

Ludico-symbolic coups and assassination attempts, make-believe funerals and degeneration of trials into grotesque rhetorical jousting : everywhere throughout Europe and the United States in the mid ... [more ▼]

Ludico-symbolic coups and assassination attempts, make-believe funerals and degeneration of trials into grotesque rhetorical jousting : everywhere throughout Europe and the United States in the mid sixties, political happenings thrived. The acts/performances, which were for the most part carried out by groups or individuals close to the Marxist and pacifist student protest movement, can’t be dissociated from a situationnist understanding of the urban milieu, transformed into one large stage for militant theatre. Founded on the principal of diversion and provocation, these actions quickly led to inflation and overbidding. Caught in a hectic whirl which forced them to always push the limit further in order to evade, if only temporarily, a process of institutionalisation that threatens any act of provocation, they soon begin to loose their political effectiveness. Born from a common political and artistic origin as the leaders of the student left movement, several “terrorist” groups harden their tone at the beginning of the seventies and perpetrate acts of violence with a revolutionary intention. Breaking away from the theatrical and ludic student activity while also retaining their situationnist obedience and a certain theatrical conception of the urban place, these armed groups think up actions in the beginning of the seventies which induce a rupture in the performative and theatrical tradition of the end of the sixties. These acts have been the subject of in depths studies by authors who, however conscious of the theatrical origins of the actions of the extreme left terrorists, refer to a terminology which imposes a distinction between action (or happening/performance) and “terrorist” acts. On the basis of this terminological distinction, we will demonstrate not only that these actions of the beginning of the seventies must be considered in a direct lineage with the political-theatrical creation of the end of the sixties, but that they also offer a first escape route, politically efficient, to the inflation which threatens any act of provocation. If the actions of the RAF, the Red Brigades or the Weathermen evade institutionalisation which threatens any act of provocation, they nevertheless remain politically unsustainable and condemn those who imagine them as well as those who execute them to an inevitably tragic ending, incompatible with the pursuit of creative practice. This paradigm will guide us in identifying some more recent creative processes (fake conferences of the Yes Men, shows/performances of Leo Bassi) which try to overcome in turn the political precariousness of their predecessors in endowing themselves with an (auto)reflexive dimension. Beyond their heterogeneity, these actions/shows shall thus be perceived as objects which surpass the act of provocation, inevitably destined to wear out. Because, in actively implicating the spectator to a point where he becomes a full fledge component of an engaged and reflexive creative process, these practices reinstate the politico-theatrical performance in its indispensable efficiency. [less ▲]

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

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

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

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

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

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

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

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

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

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

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

in Abstracts book (2013)

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

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

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See detailHealth screening to identify opportunities to improve preventive medicine in cats and dogs:focus on nutrition status
Diez, Marianne ULg; Picavet, Philippe; Ricci, Rebecca et al

in Hesta, Myriam (Ed.) Proceedings of the 17 th European Society of Veterinary and Comparative Nutrition Congress (2013)

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See detailStatistical tests for group comparison of manifold-valued data
Collard, Anne ULg; Phillips, Christophe ULg; Sepulchre, Rodolphe

in Proceedings of the 52nd IEEE Conference on Decision and Control (2013)

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

in 33° SENAFOR (CD) (2013)

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

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

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See detailÉmancipation intellectuelle et émancipation politique. Entretien avec Jacques Rancière
Janvier, Antoine ULg; Cukier, Alexis; Lavergne, Cécile

in Cukier, Alexis; Lavergne, Cécile (Eds.) Actualité des concepts d'aliénation et d'émancipation (2013)

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See detailDéterminants de la masse grasse et de la masse maigre chez les prématurés
Simon, Laure; Frondas-Chauty, Anne; SENTERRE, Thibault ULg et al

in Société Française de Néonatologie (Ed.) XXèmes Journées Francophones de Recherche en Néonatologie (2013)

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See detail(Bio)synthesis, extraction and purification of garlic derivatives showing therapeutic properties
DETHIER, Bérénice ULg; Nott, Katherine ULg; Fauconnier, Marie-Laure ULg

in Smagghe, Guy; Boeckx, Pascal; Bossier, Peter (Eds.) et al Communications in Agricultural and Applied Biosciences 2013 (2013)

Garlic has been used worldwide for centuries for its taste but also for its health benefits. Garlic's therapeutic compounds are mostly organosulfur compounds, recognized for their antioxidant, anticancer ... [more ▼]

Garlic has been used worldwide for centuries for its taste but also for its health benefits. Garlic's therapeutic compounds are mostly organosulfur compounds, recognized for their antioxidant, anticancer, anti-inflammatory and antimicrobial activity and their effect on cardiovascular diseases (reviewed by Block, 2010). When the cloves are crushed, allicin is synthesized as the vacuolar enzyme alliinase meets its substrate, the cytoplasmic alliin. Allicin is unstable and undergoes rearrangements to form three main groups of derivatives: allyl sulfides, ajoenes and vinyldithiins. The garlic processing method has a major influence on the products released both in terms of chemical composition and yields. For example, the type of medium (aqueous or oily) and the temperature can favour the formation of specific compounds. Our work aims at studying the influence of - the garlic origin, - the reaction conditions and - the extraction procedures (solvent, microwaves) on the organosulfur compounds formed. Particular attention is given to the stereochemistry and the stability of the compounds. Better understanding of the formation of high value natural molecules is important in order to lead further studies on the biological activity of the compounds or to use them as nutraceuticals. [less ▲]

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See detailDe la signification du Noaillien et du Rayssien
Touzé, Olivier ULg

in de la Heras, Carmen; Lasheras, José Antonio; Arrizabalaga, Alvaro (Eds.) et al Pensando el Gravetiense: nuevos datos para la región cantábrica en su contexto peninsular y pirenaico (2013)

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See detailEcologia funcional e filtros ambientais no campo rupestre
Negreiros, Daniel; Le Stradic, Soizig ULg; Fernandes, Geraldo Wilson et al

in Anais do 64º Congresso Nacional de Botânica: botânica sempre viva e XXXIII ERBOT Encontro Regional de Botânicos MG, BA e ES. (2013)

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

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

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

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

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

in Abstract book User Meeting Bruker MicroCT 2013 (2013)

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See detailFatty Acid Composition of Yolk, Residual Yolk and Liver at different Ages in Broilers hatched from 43-week-old Omega-3 fed Breeders
Koppenol, A.; Delezie, E.; Everaert, Nadia ULg et al

in Proceedings of The International Congress on Advancements in Poultry Production in the Middle East and African States (2013)

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See detailScientific and Technological Payloads Aboard the B3LSat CubeSat of the QB50 Network
Dell'Elce, Lamberto ULg; Kerschen, Gaëtan ULg; Delabie, Tjorven et al

in Proceedings of the 2nd IAA Conference on University Satellite Missions and Cubesat Workshop (2013)

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See detail"Penser la technique" : clé pour un développement durable
du Jardin, Patrick ULg

in Ypersele, Jean-Pascal; Hudon, Marek (Eds.) 1er colloque interdisicplinaire du développement durable : Namur 31 janvier au 1er février 2013 (2013)

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See detailAvant-propos
Droixhe, Daniel ULg

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

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

in Coupled Phenomena in Environmental Geotechnics (2013)

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See detailClassification of MCI and AD patients combining PET data and psychological scores
Segovia-Román, Fermín ULg; Bastin, Christine ULg; Salmon, Eric ULg et al

in International Workshop on Advances in Regularization, Optimization, Kernel Methods and Support Vector Machines: theory and applications (2013)

This study’s aim was to measure the advantages of using psychological test data in the automatic classification of functional brain images in order to assist the diagnosis of neurodegenerative disorders ... [more ▼]

This study’s aim was to measure the advantages of using psychological test data in the automatic classification of functional brain images in order to assist the diagnosis of neurodegenerative disorders such as Alzheimer’s disease (AD). Several computer-aided diagnosis systems for AD based on PET images were developed. Some of them used psychological scores beside the image data in the classification step and others did not. The results show the ones that take into account the psychological scores achieve higher accuracy rates. [less ▲]

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See detailQu'est-ce qu'une mutation religieuse ?
Pirenne-Delforge, Vinciane ULg; Scheid, John

in Bonnet, Corinne; Bricault, Laurent (Eds.) Panthée: Religious Transformations in the Graeco-Roman Empire (2013)

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See detailSeeing the corona with the solar probe plus mission: the wide-field imager for solar probe+ (WISPR)
Vourlidas, A.; Howard, R. A.; Plunkett, S. P. et al

in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series (2013)

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See detailQuelques rappels et réflexions sur les rapports entre l'oral et l'écrit en langue et en didactique des langues
Defays, Jean-Marc ULg

in Defays, Jean-Marc; Meunier, Deborah (Eds.) L'oral et l'écrit en didactique des langues romanes (2013)

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

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

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

in EAAP series (2013)

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See detailFlowOS: A Programmable Platform for Commodity Hardware Middleboxes
Abdul, Alim; Bezahaf, Mehdi; Mathy, Laurent ULg

in Proceedings of CFI 2013 (2013)

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See detailEffects of dietary A-lipoic-acid on feed intake and hypothalamic AMPK activity of young broiler chicks
Wang, Y.; Willems, E.; Franssens, L et al

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

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See detailOn variation in gender agreement: the neutralization of pronominal gender in Dutch
De Vos, Lien ULg

in Giacalone Ramat, Anna; Mauri, Caterina; Molinelli, Piera (Eds.) Synchrony and diachrony: a dynamic interface (2013)

Studies on developments in pronominal gender agreement often focus on the semantic guidelines that are used to replace grammatical agreement with. However, pragmatic factors contribute to the competition ... [more ▼]

Studies on developments in pronominal gender agreement often focus on the semantic guidelines that are used to replace grammatical agreement with. However, pragmatic factors contribute to the competition between syntactic and semantic agreement as well. This paper analyzes two prominence factors contributing to the overall discourse salience of the antecedent noun and their impact on grammatical agreement in personal pronouns. First, the results will reveal that the antecedent’s referential status i.e. the assumed cognitive status the antecedent has in the mind of the addressee (cf. the Givenness Hierarchy) exerts influence on the use of gender-marked pronouns. Secondly, this study will indicate that antecedents in subject position trigger more syntactic agreement than antecedents with other grammatical functions. [less ▲]

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See detailManifestation du divin et reconfiguration des panthéons à la période hellénistique. L'exemple des Artémis d'Asie mineure
Paul, Stéphanie ULg

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

During the second half of the 2nd century B.C., the city of Bargylia, in Caria, undertook a major reorganization of the cult of Artemis Kindyas, who manifested herself to help the city when it was ... [more ▼]

During the second half of the 2nd century B.C., the city of Bargylia, in Caria, undertook a major reorganization of the cult of Artemis Kindyas, who manifested herself to help the city when it was threatened by war. A few remarkable inscriptions provide evidence of the regulations designed to « increase the honours » of the goddess, which mainly consist in making an ox sacrifice more splendid. Less than a century beforehand, a similar situation is observed in the cult of Artemis Leukophryene in Magnesia of the Meander, and of Artemis Hiakynthotrophos in Cnidus. Based on these three examples, this paper aims at showing how these epiphanies were used to settle a given deity into its function of patron deity of the city, both from an external and from an internal point of view. [less ▲]

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See detailBoosting Response Rates: Evidence from Flemish Travel Behavior Survey
Cools, Mario ULg

in Proceedings of the 92nd Annual Meeting of the Transportation Research Board (DVD-ROM) (2013)

This paper investigates the transition of the Flemish travel survey (OVG) from a household-based travel survey to a person-based travel survey. The paper examines the design features of the different OVGs ... [more ▼]

This paper investigates the transition of the Flemish travel survey (OVG) from a household-based travel survey to a person-based travel survey. The paper examines the design features of the different OVGs, with particular attention to the resulting response rates. In addition to the sample unit, the contact and survey procedure has switched from telephone/postal to face-to-face. The most striking effect of the changed methodology is the spectacular increase in the response rates: overall response rates of the most recent OVGs were more than double that of the previous OVGs, resulting in overall response rates of 75%. In addition, the likelihood that some questionnaires were missing (e.g. diaries were retrieved, but household questionnaires were not) decreased from 7% to 3%. Furthermore, the paper shows that a person-based travel survey still can be used for travel demand modeling frameworks that incorporate (some) household interactions. Notwithstanding, some issues have been raised, such as the decreased comparability of travel figures due to the changes in the survey design. In conclusion, the inclusion of a “with whom” dimension in the trip diary is recommended, and it is advocated that policy makers should clearly outline the primary objectives for the OVG for the coming years. [less ▲]

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

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

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See detailLe corps dans la médecine des moines au Moyen Age : autour de quelques Régimes de santé monastiques
Xhayet, Geneviève ULg

in Hüe, Denis; De Gramont, Jérôme; Baillaud, Bernard (Eds.) Corps et encyclopédies : Actes du colloque de Cerisy, 10-14 septembre 2008 (2013)

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See detailMicro-CT evaluation of the effect of material, donor and implantation site variability on the bone forming capacity of progenitor cell/CaP-collagen constructs implanted ectopically in nude mice
Van Hove, Astrid; Geeroms, Carla; Maréchal, Marina et al

in Abstract book User Meeting Bruker MicroCT 2013 (2013)

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See detailPossibilities and limitations of the Prevost model for the modelling of cohesionless soil cyclic behaviour
Cerfontaine, Benjamin ULg; Charlier, Robert ULg; Collin, Frédéric ULg

in Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering (2013)

The Prevost’s model is currently used to model cyclic behaviour of soils especially in earthquake engineering. The original model is able to capture the main features of cyclic behaviour: pore pressure ... [more ▼]

The Prevost’s model is currently used to model cyclic behaviour of soils especially in earthquake engineering. The original model is able to capture the main features of cyclic behaviour: pore pressure build up and plastic deformation accumulation. But accurate modelling of laboratory tests requires improvements. Enhanced models exist but require a lot of parameters that make them cumbersome for practical purpose. A suction caisson, part of a tripod offshore foundation for wind turbines is modelled. Possibilities of the Prevost’s model are highlighted compared with a classical Drucker-prager model. [less ▲]

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See detailL'enseignement de l'informatique en Belgique francophone : état des lieux
Joris, Noémie ULg; Henry, Julie ULg

in Sciences et technologies de l'information et de la communication (STIC) en milieu éducatif, Clermont-Ferrand : France (2013) (2013)

Cet article dresse la liste de ce qui constitue actuellement l'enseignement de l'informatique en Belgique francophone. À travers la description succincte des programmes proposés pour l'enseignement ... [more ▼]

Cet article dresse la liste de ce qui constitue actuellement l'enseignement de l'informatique en Belgique francophone. À travers la description succincte des programmes proposés pour l'enseignement secondaire ordinaire, les manquements et les avancées sont pointés du doigt. Les auteurs analysent l'existant, font des réflexions, tirent des constats et cherchent ainsi des réponses aux questions qui se posent trop souvent. Avec quel(s) bagage(s) les élèves arrivent-ils aux portes des études supérieures ? Sur quelles ressources peuvent se reposer les enseignants pour construire leur cours ? Quelle informatique enseigner ? Informatique et TIC : quel(s) lien(s) ? Quelle place pour les TIC dans les programmes actuels ? [less ▲]

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

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

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

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

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See detailLa vie terminologique de l’énonciation
[Lttr 13]; Badir, Sémir ULg; Polis, Stéphane ULg et al

in Dufaye, Lionel; Gournay, Lucie (Eds.) Benveniste après un demi-siècle, regards sur l'énonciation aujourd'hui (2013)

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

in American Geophysical Union Fall Meeting, Abstract (2013)

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See detail"Europe-Amérique" / "Europe-Magazine": un hebdomadaire belge, organe de l'extrême-droite française, 1945-1960?
Lanneau, Catherine ULg

in Dard, Olivier (Ed.) Supports et vecteurs des droites radicales au XXe siècle (Europe-Amériques) (2013)

Issued under various titles between 1944 and the early 1980’s, the Belgian weekly Europe Amérique / Magazine showed itself at first rather eclectic in the choice of its writers and the articles it ... [more ▼]

Issued under various titles between 1944 and the early 1980’s, the Belgian weekly Europe Amérique / Magazine showed itself at first rather eclectic in the choice of its writers and the articles it published. It had soon more and more pronounced leanings towards the far right and specialized itself in a vociferous form of anticommunism, the rehabilitation of Vichy regime and strong criticism of the Republic as the brain child of a biased vision of the Resistance. It opened its columns to avowed rightist French journalists ear-marked for theit conduct during WW2 and / or having their names on the black list of the Comité National des Ecrivains. After describing the inner story of the weekly, the causes and consequences of its two prohibitions in France (1946-1948, 1949-1953), this article deals with its strongly Vichy tainted staff of French writers (Alfred Fabre-Luce, Louis Guitard, Louis Rougier, Pierre Dominique, Albert Paraz, Lucien Rebatet...) and its closeness with the well-known Paroles Françaises, Ecrits de Paris and Rivarol. [less ▲]

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See detailAnalyse de l'efficience des traitements de mammites de 60 fermes de Wallonie dans la base LAECEA
Theron, Léonard ULg; Reding, Edouard; Detilleux, Johann ULg et al

in Brard, Christophe (Ed.) Recueil des Journées Nationale des GTV (2013)

Le traitement de la mammite bovine est un acte à part dans la routine d’une exploitation bovine. En effet, si les cas les plus graves sont vus presque systématiquement pas le vétérinaire traitant en ... [more ▼]

Le traitement de la mammite bovine est un acte à part dans la routine d’une exploitation bovine. En effet, si les cas les plus graves sont vus presque systématiquement pas le vétérinaire traitant en France ou en Belgique, la plupart des cas peu sévères font l’objet d’une tacite délégation de diagnostic et de traitement, sur base d’une formation préalable et d’une prescription enregistrée. Aujourd’hui, cette pathologie représente le plus important poste de consommation d’antibiotiques en exploitation laitière. Concernant cette problématique, la profession vétérinaire doit disposer de nouveaux outils de diagnostic, de traitement, et surtout d’évaluation de la qualité du traitement. Or, depuis la fin des années 1940, la pratique de l’antibiothérapie est restée, comme en médecine humaine, basée essentiellement sur l’antibiothérapie empirique, plus ou moins régulée par des cultures bactériologiques et des antibiogrammes (Durel et al., 2012). La profession s’est dotée d’outils d’analyse épidémiologique et clinique au cours des décennies, mais les résultats sont mitigés : une diminution globale de la consommation d’antibiotiques, mais le recours accru à des classes de dernières générations. Aujourd’hui le grand enjeu de l’antibiothérapie se corse, avec l’identification de mécanisme de résistance suspects d’être communs avec la médecine humaine(Jaglic et al., 2010). Plusieurs classes de molécules communes avec la médecine humaine sont identifiées, et leur utilisation menace d’être régulée (Bagcigil et al., 2007). Face à ce constat, l’utilisation des antibiotiques destinés au traitement de la mamelle a été étudiée en Belgique, dans soixante fermes laitières wallonnes (Théron et al., 2011). [less ▲]

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See detailProfiles of pregnancy-associated glycoprotein (PAG) concentrations during gestation in swamp buffalo
Van Hahn, N; Viet Linh, N; Melo de Sousa, Noelita ULg et al

in Proceedings of the 10th World Buffalo Congress and 7th Asian Buffalo Congress (2013)

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See detailAn analytical approach for Piano Key weir hydraulic design
Machiels, Olivier; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

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

A hydraulic design equation for Piano Key Weirs is set up using the results of a large experimental parametric study. Comparison of the analytical formulation with experi-mental data from various physical ... [more ▼]

A hydraulic design equation for Piano Key Weirs is set up using the results of a large experimental parametric study. Comparison of the analytical formulation with experi-mental data from various physical modeling studies, considering idealized as well as real projects Piano Key Weirs configurations, shows a 15% accuracy in unit discharge prediction on a large range of geometric parameters values. Comparison of the proposed formulation to two other recently proposed equations highlights the importance to consider such analytical approaches inside the range of parameter values for which they have been validated. [less ▲]

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

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

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

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

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See detailExtension of the DSM to welded H profile cross-sections
Rossi, Barbara ULg; Li, Yongzhen ULg

in Research and Applications in Structural Engineering, Mechanics and Computation (2013)

The objective of the paper is to assess the accuracy of current Direct Strength Method (DSM) equations applied to steel structural welded H shapes in axial compression. Commercialised hot-rolled H ... [more ▼]

The objective of the paper is to assess the accuracy of current Direct Strength Method (DSM) equations applied to steel structural welded H shapes in axial compression. Commercialised hot-rolled H sections covering IPE, HE, HD, HL, HP, W and UB profiles and made of three grades (235MPa, 355MPa and 460MPa) were treated in (Li & Rossi 2012). This analysis focuses on welded sections made of the same three grades, including sections characterized by local buckling with a significant post-buckling reserve. The finite element model is described. Then, the results of a parametric analysis using the finite element model are re-ported. The codified resistances are also compared to the numerical results. For each cross-section, the recently developed analytical expressions provided in (Seif & Schafer 2010) for hot-rolled profiles are used to cal-culate the elastic cross-section local buckling stress. A comparison with CUFSM results is also reported. Then, the possibility to use the concept of DSM for the design of structural welded steel shapes is discussed. [less ▲]

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See detailDevelopment of a method to predict individual enteric methane emissions from cows based on milk mid-infrared spectra
Vanlierde, Amélie ULg; Froidmont, Eric; Soyeurt, Hélène ULg et al

in Hassouna, Mélynda; Guingand, Nadine (Eds.) Emissions of Gas and Dust from Livestock (2013)

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

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

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See detailRural resilience and the role of social capital of Kirundo province farmers in north of Burundi
Minani, Bonaventure ULg; Rurema, Déo-Guide; Lebailly, Philippe ULg

in Backovic, Slobodan (Ed.) 3rd AGRIMBA-AVA Congress "Agribusiness and rural development as a global challenge" : programme and abstract book (2013)

Burundi, family agriculture occupies more than 90% of the active population and plays a vital role in food production and participates of more than 50% of GDP. Before the civil war of 1993, Kirundo was ... [more ▼]

Burundi, family agriculture occupies more than 90% of the active population and plays a vital role in food production and participates of more than 50% of GDP. Before the civil war of 1993, Kirundo was deemed "breadbasket of the country" for the simple reason that fed many parts of Burundi in particular food legumes and cereals, so that family farming was oriented the market. Kirundo alone includes 8 lakes with opportunities for field irrigation. Today, this is the first province in Burundi shows a high rate of malnutrition, poverty increased and a sharp decline in agricultural production up more than 500%. In this study, 73 farmers were surveyed in Kirundo, supplemented by secondary data collection. Analysis of data showed us that, despite recurrent droughts in that region which was caused several deaths due to famines and several displacements of people to neighboring countries such as Rwanda and Tanzania, we found 44% of farmers surveyed who had the resilience to climate change. The analysis of data shows that these farmers were members of local development associations, having learned specific topics such as financial management, processing and storage of agricultural products and livestock. That social capital network influences positively their income because they practice not only farming but also revenue-generating activities such as trade and crafts. [less ▲]

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

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

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See detailConclusions de la première journée
Lanneau, Catherine ULg

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

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

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

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

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

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See detailResident lung CD11b+Ly6C- dendritic cells are responsible for allergic airway sensitization to house dust mite in mice
Mesnil, Claire ULg; Sabatel, Catherine ULg; Marichal, Thomas ULg et al

in Proceeding of International Congress of Immunology 2013 (2013)

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

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

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

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

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

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

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See detailNew capabilities of the INCL4.6 model implemented into high-energy transport codes
Leray, S.; Boudard, A.; Braunn, B. et al

in Proceedings of Shielding Aspects of Accelerators, Targets and Irradiation Facilities 2011 (2013)

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See detailAggregating Optimistic Planning Trees for Solving Markov Decision Processes
Kedenburg, Gunnar; Fonteneau, Raphaël ULg; Munos, Rémi

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

This paper addresses the problem of online planning in Markov decision processes using a randomized simulator, under a budget constraint. We propose a new algorithm which is based on the construction of a ... [more ▼]

This paper addresses the problem of online planning in Markov decision processes using a randomized simulator, under a budget constraint. We propose a new algorithm which is based on the construction of a forest of planning trees, where each tree corresponds to a random realization of the stochastic environment. The trees are constructed using a “safe” optimistic planning strategy combining the optimistic principle (in order to explore the most promising part of the search space first) with a safety principle (which guarantees a certain amount of uniform exploration). In the decision-making step of the algorithm, the individual trees are aggregated and an immediate action is recommended. We provide a finite-sample analysis and discuss the trade-off between the principles of optimism and safety. We also report numerical results on a benchmark problem. Our algorithm performs as well as state-of-the-art optimistic planning algorithms, and better than a related algorithm which additionally assumes the knowledge of all transition distributions. [less ▲]

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See detailDendrochronologie en région bruxelloise, en Wallonie et en France par l'Université de Liège (CEA) en 2012
Hoffsummer, Patrick ULg; Lambert, Georges-Noel; Blain, Sophie ULg et al

in Chronique, Archaeologia Mediaevalis 36, Bruxelles, 2013. (2013)

La campagne d'analyses dendrochronologiques en région bruxelloise s'est poursuivie en 2012 dans le cadre de conventions passées avec la Direction des Monuments et Sites (DMS) de la Région de Bruxelles ... [more ▼]

La campagne d'analyses dendrochronologiques en région bruxelloise s'est poursuivie en 2012 dans le cadre de conventions passées avec la Direction des Monuments et Sites (DMS) de la Région de Bruxelles-Capitale. Cinq analyses viennent s'ajouter à celles déjà faites les années antérieures. L'étude en cours dans le cadre du projet de synthèse sur l'évolution des charpentes à Bruxelles est prévue pour 2014. ce sujet sera développé en profondeur durant l'année 2013 dans la perspective d'une publication éditée à l'initiative de la DMS, du CEA (ULg) et du Centre de recherches en archéologie et patrimoine de l'ULB (CReA-Patrimoine).Par ailleurs, d'autres travaux en cours, notamment dans la région d'Auxerre, initiés lors du projet des Toits de l'Europe financé par l'Union européenne, ont pu être clôturés et déboucheront sur des publications spécifiques (église Notre-Dame de Vermenton, l'abbaye de Reigny à Vermenton et l'église Saint-Martin à Branches). Enfin deux études importantes ont été menées en Wallonie sur les sites du château d'Ecaussinnes et de l'abbaye de Floreffe. [less ▲]

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

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

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

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

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

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

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

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

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

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

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See detailPregnancy-associated glycoproteins in sheep: breeds, techniques and achievements
El Amiri, Bouchra; Melo de Sousa, Noelita ULg; Szenci, Otto et al

in Proceedings of the 23rd International Congress of Hungarian Association for Buiatrics (2013)

The aim of the present review is to summarize the achievements on pregnancy-associated glycoproteins in sheep during the last 20 years on terms of results obtained after purifications, molecular biology ... [more ▼]

The aim of the present review is to summarize the achievements on pregnancy-associated glycoproteins in sheep during the last 20 years on terms of results obtained after purifications, molecular biology, radio-immunoassays (RIA), enzyme linked immune sorbent assay (ELISA), double radial immune-diffusion (Ouchterlony) and Western blot techniques. The analysis of documented papers that concerned these attempts showed that the animal genetic material used was composed of variable breeds from north Africa, Europe and USA (the Aragonesa, Ouled Djellal, Laucaun drairy sheep, Berrichone, Texel x Norvegian crossed ewes, Awassi x Merino, Blackheaded Moutton sheep x Blackheaded German Mutton sheep (BGM), Rhoen sheep crosses of BGM with Dorper sheep, Assaf, Chura, Merino, Texel, Suffolk, Boujaâd Moroccan breed). The RIA represents the wildspread technique used (54%) while Oucherlony and Western blot had been limited in use (4% each). From 1990 to 2000 only 27% of the achievements being available today were realized. The main data, profiles and studies were performed from 2000 to now (63%). To conclude, this review allows summarizing and updating the knowledge about the PAG in sheep. [less ▲]

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

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

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

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

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

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

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

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

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See detailThe abundance of charcoal fragments emphasizes the assumption of huge palaeofires in the mixed moist semi-evergreen rainforest of the northern republic of Congo
Gillet, Jean-François ULg; Doucet, Jean-Louis ULg

in Damblon, Freddy (Ed.) Proceedings of the Fourth International Meeting of Anthracology (2013)

In this paper, we study the origins of the northern Congo Republic rainforests. Macroscopic charcoal fragments were systematically recorded through auger investigations and pits observations in four ... [more ▼]

In this paper, we study the origins of the northern Congo Republic rainforests. Macroscopic charcoal fragments were systematically recorded through auger investigations and pits observations in four forest types: the open canopy Marantaceae forest, the dense forest with Marantaceae, the Gilbertiodendron dewevrei forest and the Triplochiton scleroxylon forest. In addition, the charred Elaies guineensis seeds were distinguished from the other charcoals in the pits. Ten selected charcoals, including charred E. guineensis seeds, were dated by AMS. Abundance of charcoal fragments in the soils at various depths indicated several episodes of fires in the region. A dryer climatic phase, between 2320 and 1330 BP, associated with a large scale human occupation related to the important harvesting of oil palm nuts, could explain the widespread Marantaceae forests. Recent slash-and-burn shifting cultivation, c. 200 BP, would allow T. scleroxylon installation. Implications for forest management are discussed. [less ▲]

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See detailPotential use of mid-infrared milk spectrum in pregnancy diagnosis of dairy cows
Laine, Aurélie ULg; Goubau, Amaury; Dale, Laura-Monica et al

in Book of Abstracts of the 64th Annual Meeting of the European Federation of Animal Science (2013)

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

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

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See detailAutomated text categorization in a dead language. The detection of genres in Late Egyptian
Gohy, Stéphanie ULg; Martin Leon, Benjamin ULg; Polis, Stéphane ULg

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

This paper is a first step in applying machine learning methods typical of Automated Text Catego-rization (ATC) for Automatic Genre Identification (AGI) in Late Egyptian, a language written in either ... [more ▼]

This paper is a first step in applying machine learning methods typical of Automated Text Catego-rization (ATC) for Automatic Genre Identification (AGI) in Late Egyptian, a language written in either hieroglyphic or hieratic scripts that is found in documents from Ancient Egypt dating from ca. 1350-700 BCE. The study is divided into three parts. After a general intro¬duction on AGI (§1), we introduce the levels of annotation that are integrated in the Ramses corpus and can be used when performing AGI on Late Egyptian (§2). In the following section (§3) we offer a brief survey of the types of features that have been discussed in the literature on AGI, before proceeding with three case studies where we apply supervised machine learning methods — namely the naïve Bayes classifier (§4.1), the Support Vector Machine (§4.2), and the Segment and Combine approach (§4.3) — to a selection of texts in the corpus. Their respective performances are tested using lexical, part-of-speech and inflectional features. [less ▲]

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See detailAxisymmetric transient modelling of a wind turbine foundation in cohesionless soil using the Prevost’s model
Cerfontaine, Benjamin ULg; Levasseur, Séverine ULg; Charlier, Robert ULg

in Computational Methods in Marine Engineering (2013)

Suction caissons are more and more used for offshore foundations. This paper deals with the cyclic modelling of suction caissons using the Prevost's model. The case study is a 8m large diameter embedded ... [more ▼]

Suction caissons are more and more used for offshore foundations. This paper deals with the cyclic modelling of suction caissons using the Prevost's model. The case study is a 8m large diameter embedded in dense No. 0 Lund sand. Parameters for the model are calibrated using drained triaxial tests. A parametric study concerning the influence of the constitutive law, the skirt length and permeability is carried out. [less ▲]

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See detailL’ethnoarchivage zápara ou les commissaires de l’immatériel
Bilhaut, Anne-Gaël ULg

in Bergeron, Y.; Ferey, V. (Eds.) Archives et musées : le théâtre du patrimoine (France-Canada) (2013)

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

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

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See detailArt on the lagoon: Eliasson at the Biennale of Venice
Szanto, Catherine ULg; Gay, Fabrizio; Ballarin, Matteo

in Newman, Conor; Nussaume, Yann; Pedroli, Bas (Eds.) Landscape and Imagination. Towards a new baseline for education in a changing world (2013)

The Biennales of Venice are not limited to exhibitions in national pavilions. Every year artists and architects choose to confront the site and more specifically, the lagoon. In the edition of 2005, the ... [more ▼]

The Biennales of Venice are not limited to exhibitions in national pavilions. Every year artists and architects choose to confront the site and more specifically, the lagoon. In the edition of 2005, the artist O. Eliasson proposed an installation (Your black horizon, 2005) where the visitors left the wide expanse and intense light of the lagoon to enter a darkened enclosed space with subtle light effects. These aesthetic experiences enhanced the visitors’ perception of light by changing the usual spatiality and temporality of colour. We will analyze the role of memory in the rite of the visit, and look at how the museal strategies of the artist create a play with spatial memory and sense of orientation in relation to the outdoor space of the lagoon. [less ▲]

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