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See detailLa coordination en ancien français: juxtaposition ou apposition «spécifiées»
Mazziotta, Nicolas ULg

Conference (2009, September)

La coordination en ancien français : juxtaposition ou apposition « spécifiées » 1.Cadre 2.Vers une définition 3.Le coordonnant comme « spécificateur » 4.La question des « zéros » 1 . Cette recherche se ... [more ▼]

La coordination en ancien français : juxtaposition ou apposition « spécifiées » 1.Cadre 2.Vers une définition 3.Le coordonnant comme « spécificateur » 4.La question des « zéros » 1 . Cette recherche se situe dans le cadre du nouveau projet Syntactic Reference Corpus of Medieval French (ANR/DFG), dont l'objectif est de fournir une annotation syntaxique consistante des relations de niveau propositionnel dans le corpus de la Base de Français Médiéval (Lyon) et le Nouveau Corpus d'Amsterdam (Stuttgart). Dans cette contribution, nous présenterons notre approche personnelle d'un problème de syntaxe particulier — le modèle du projet n'étant pas encore suffisamment abouti. L'utilisation de ces corpus implique deux conséquences : d'une part, notre première préoccupation sera l'adéquation de la description aux données (empirisme) ; d'autre part, notre argumentation portera sur l'ancien français. Malgré notre focalisation sur cette période particulière du français, les résultats de la recherche en syntaxe du français moderne et en linguistique générale nourriront notre réflexion, qui sera fondée sur des exemples concrets. 2. Nous commencerons par définir le terme coordination, en partant de son acception traditionnelle et en essayant de la rationnaliser. Les notions d'apposition et de juxtaposition seront également redéfinies, en prenant appuis sur les notions de coorientation et de coréférence, développées en linguistique générale par A. Lemaréchal (1997). Ces définitions rationnalisées nous permettront de reclasser certains faits de syntaxe généralement considérés comme des coordinations en leur refusant ce statut. 3. Nous réfléchirons ensuite sur la fonction syntaxique et la valeur sémantique du coordonnant. Nous montrerons comment la notion de spécification (Lemaréchal 1997, qui développe les vues de Tesnière ²1965) s'applique à ces morphèmes, qui apportent un surcroît de sens par rapport à une relation de juxtaposition ou d'apposition qui existerait sans qu'ils ne soient présents. Cette approche nous permettra de mettre en parallèle les coordonnants et les autres relateurs « analytiques » que sont les « prépositions » et les « conjonctions de subordination » et d'en souligner les points communs. Cette dernière mise au point nous permettra de décrire la coordination comme une juxtaposition ou une apposition spécifiées syntaxiquement et sémantiquement par le coordonnant. 4. Nous reprendrons alors la discussion sur la présence éventuelle de constituants « zéros » soulevée par des structures du type : aura li glise le deus et li voweiz le tierce (Liège 1244). À l'aide de l'observation de cas concrets, nous nous positionnerons dans ce débat en rejetant la présence de « zéros » (introduits dans l'analyse transformationnelle du problème, cf. Marcotte 1997), nous rangeant à l'avis de Chr. Touratier (2005), qui prône l'analyse des structures telles qu'elles sont observables. Cette question nous mènera à celle de la fonction des constituants coordonnés et du groupe qu'ils forment. [less ▲]

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See detailEco-ethological aspects of two natural hybrids involving Abramis brama (L.), of the River Meuse basin (Belgium) and implications in ecosystem management.
Nzau Matondo, Billy ULg; Ovidio, Michaël ULg; Philippart, Jean-Claude ULg et al

Conference (2009, September)

Eco-ethology as expressed in migration patterns, hybridisation level, growth rates in river conditions, and reproductive behaviour in a controlled environment were investigated in natural common bream ... [more ▼]

Eco-ethology as expressed in migration patterns, hybridisation level, growth rates in river conditions, and reproductive behaviour in a controlled environment were investigated in natural common bream Abramis brama × roach Rutilus rutilus and common bream × silver bream Blicca bjoerkna hybrids. From 2001 to 2003, hybrids and parental species were captured in a fish pass trap at the Lixhe dam on the Belgian Meuse River during their reproductive migration. The fish pass was checked 3 days a week and the water temperature was recorded hourly. The results showed that these hybrids were less frequent but they had migrated during the same period and in the same environmental conditions as the parental species. Scale readings showed that the growth of hybrids was intermediate between the two parent species’ growth. In controlled environments, the female hybrid mated with one to two males, including male hybrids, in reproductive experiments between hybrids; they also mated with male hybrid and male roach or male silver bream, but without the male common bream in reproductive experiments with hybrids mixed with parental species males, in a succession of spawning episodes recognised in parental species. Aggressive and territorial acts were observed among the males of these hybrids in a territory including a spawning substrate. This study has proven that these natural hybrids are eco-ethologically viable. For the management of fish populations and aquatic environments, the hybridisation process can be considered an indicator of habitat degradation. This degradation can then be interrupted by preserving spawning sites, controlling the restocking and species introduction, restoring habitats, and preserving the obstruction of fish migration. [less ▲]

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See detailInvariant games
Duchêne, Eric; Rigo, Michel ULg

Conference (2009, September)

In the context of 2-player removal games, we define the notion of invariant game for which each allowed move is independent of the position it is played from. We present a family of invariant games which ... [more ▼]

In the context of 2-player removal games, we define the notion of invariant game for which each allowed move is independent of the position it is played from. We present a family of invariant games which are variations of Wythoff's game. The set of P-positions of these games are given by a pair of complementary Beatty sequences related to the irrational quadratic number $\alpha_k = (1; \overline{1, k})$. We also provide a recursive characterization of this set. [less ▲]

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See detailGuilt and Responsibility in Restorative Justice and Criminal Justice
Lauwaert, Katrien ULg

Conference (2009, September)

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See detailNumerical simulation of heat transport associated with groundwater pumping in an alluvial aquifer
Fossoul, Frédérique ULg; Orban, Philippe ULg; Dassargues, Alain ULg

Conference (2009, September)

In a context more favourable to renewable energies, various aquifers are studied to feed heating and/or cooling systems. The groundwater flow and heat transport are modelled in the alluvial aquifer of the ... [more ▼]

In a context more favourable to renewable energies, various aquifers are studied to feed heating and/or cooling systems. The groundwater flow and heat transport are modelled in the alluvial aquifer of the river Meuse in order to provide an integrated tool for assessing the feasibility of a low energy air cooling /heating system for a large office building by pumping groundwater and discharging in the river. First, a comparative sensitivity analysis is performed using three different codes (MT3D, SHEMAT and HYDROGEOSHERE) for assessing the influence of coupling and non linearities in the main parameters due to the temperature evolution in function of time. Then, assuming that the variations of the aquifer temperature are weak enough to neglect their influence on hydrodynamics and thermal parameters, the MT3D and HYDROGEOSPHERE codes are used for modelling the actual case-study. In practice, for cooling the office building with groundwater initially at 13°C, the main influence of the relative hot water from the river Meuse (in hot summer conditions 27°C) is computed and constitutes the major limiting factor. An optimisation of the pumping schema is computed to maximise the efficiency of the cooling/heating system. [less ▲]

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See detailLes politologues dans le débat public
Jacquemain, Marc ULg

Conference (2009, September)

The paper shows how political analysts not only have the right to participate in public debates but also have a duty to do so. It also examines what are the conditions of separation between expert ... [more ▼]

The paper shows how political analysts not only have the right to participate in public debates but also have a duty to do so. It also examines what are the conditions of separation between expert attitude and commitment so that this freedom of speech does not degenerate into propaganda. [less ▲]

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See detailLatitudinal - local time distribution of the O2 and OH infrared nightglows and O density in the Venus lower thermosphere
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Saglam, Adem et al

Conference (2009, September)

Atomic oxygen has been measured in situ only above 145 km on both the day and the night sides of Venus. Limb observations obtained with the Venus Infrared Thermal Imaging Spectrometer (VIRTIS) on board ... [more ▼]

Atomic oxygen has been measured in situ only above 145 km on both the day and the night sides of Venus. Limb observations obtained with the Venus Infrared Thermal Imaging Spectrometer (VIRTIS) on board Venus Express show that the O2 infrared nightglow peaks at ~97 km [1, 2], with a mean intensity value of about 1 MR. Yet, the distribution is largely inhomogeneous, with an enhanced region of ~3 MR statistically located near the midnight meridian at low latitude [3]. The oxygen density can be mapped using the O2 airglow and CO2 density vertical distributions [4]. The O2 vol-ume emission rates are obtained with an Abel inversion of the O2 limb profiles using CO2 vertical distributions taken from the Venus International Reference Atmosphere (VIRA) model. The results show that the O density peak varies in altitude with a mean value of 105 km. It ranges from 1.0x1010 to 14.5x1011 cm-3, with a mean value of 2.2x1011 cm-3. The zonally averaged peak altitude appears to be constant while its amplitude decreases with latitude. Another approach uses the O2 volume emission rates obtained with an Abel inversion of the O2 limb profiles. In-deed, it is then possible to vertically integrate these profiles to simulate nadir observations. The resulting map gives values between 0 and 2.8 MR (with a mean value of 0.6 MR) in the north hemisphere. A statistical map created with actual nadir observations shows intensities ranging from 0 to 2.1 MR, with a mean of 0.5 MR in the south hemisphere. A combination of the two types of observations could cover Venus entire nightside. Statistical mapping of the OH Meinel emission has also been performed using limb profiles. A strong correlation with the O2 emission is revealed. The average altitude of the emission peak is ~95.3 km for the OH(1-0) band and the average intensity is 0.4 MR [5]. [less ▲]

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See detailHF radar observations of surface currents in the German Bight: descriptive analysis, model-data comparison and non-sequential ensemble data assimilation
Port, A.; Staneva, J.; Schulz-Stellenfleth, J. et al

Conference (2009, September)

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See detailPISA Student Non Response Adjustment Procedures
Rust, K.; Krawchuk, S.; Monseur, Christian ULg

Conference (2009, September)

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See detailCharacterization of nanometer-scale roughness in SBA-15 mesoporous silica using image analysis of electron tomograms
Friedrich, Heiner; Gommes, Cédric ULg; de Jongh, Petra et al

Conference (2009, September)

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See detailIGCP 580 - Magnetic susceptibility, correlations and palaeoenvironment.
Da Silva, Anne-Christine ULg; Whalen, Michael; Hladil, Jindrich et al

Conference (2009, September)

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See detailDetection of High molecular mass for MALDI Imaging and Profiling
Franck, Julien; Longuespée, Rémi ULg

Conference (2009, September)

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See detailDoes Social Innovation vary with the Organisational Form? Exploring the Diversity of Fair Trade Social Enterprises in Europe
Huybrechts, Benjamin ULg

Conference (2009, September)

A common view in the literature on social entrepreneurship and social enterprise is to highlight the fact that social innovation crosses the organizational forms. But does that social innovation should be ... [more ▼]

A common view in the literature on social entrepreneurship and social enterprise is to highlight the fact that social innovation crosses the organizational forms. But does that social innovation should be considered regardless of the organizational form? Fair Trade (FT) offers a quite interesting example of both a social innovation and a field in which diverse organizational forms coexist. My research questions are twofold: (1) what are the different types of organizational forms that underlie social innovation in the FT sector?; (2) do these different forms bring different types of social innovation? The methodology consists of interviews with the leaders of 57 Fair Trade Social Enterprises (FTSEs) in four European regions: Belgium, France (Rhône-Alpes), United Kingdom (England) and Italy (Rome). The findings show that the legal forms and governance models–the two elements of the organizational form considered here–can be combined into five categories of organizational forms: individual, manager-owned business, volunteer-based, multi-stakeholder cooperative and group. These categories seem to be linked, at least to a certain extent, to the age of the FTSE and to its goals. Certain forms seem to signal a particular type of social innovation. Volunteer-based FTSEs use education and advocacy as the main channel to pursue social change at the global level, and see the partnerships with the producers in the South as a vehicle to support the former goal. Individual and business-form FTSEs focus on offering benefits to the producers through a profitable commercial activity. And multi-stakeholder cooperatives and groups generally seek to combine both types of social innovation. However, nuances exist and lead to considering the organisational form as vehicles that may serve various purposes according to the context and the entrepreneurs’ profiles. I suggest three theoretical frameworks to interpret the diversity of organizational forms and its link with the logics of social innovation. Neo-institutional economics allow to see organizational diversity as the result of the production of different types of goods within the “FT bundle”. New institutionalism in organizational analysis emphasizes organizational diversity as the result of either weak (or non-existent) or multiple institutional logics. And institutional entrepreneurship highlights the ability of FTSEs to shape the environment in a way that legitimizes their own way of conceiving social innovation. I conclude that these three frameworks offer complementary explanations to organizational diversity and that the latter is an asset rather than an obstacle for carrying social innovation in multiple and complementary ways. [less ▲]

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See detailEnsemble smoother for optimizing tidal boundary conditions and bottom roughness by assimilation of High-Frequency Radar surface currents
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Staneva, J. et al

Conference (2009, September)

High-Frequency (HF) radars measure the ocean currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, density-driven circulation and Stokes drift. Sequential ... [more ▼]

High-Frequency (HF) radars measure the ocean currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, density-driven circulation and Stokes drift. Sequential assimilation methods updating the model state have been proven successful to correct the density-driven currents by assimilation of observations such as sea surface height, sea surface temperature and in-situ profiles. However, the situation is different for tides in coastal models since these are not generated within the domain, but are rather propagated inside the domain through the boundary conditions. For improving the modeled tidal variability it is therefore not sufficient to update the model state via data assimilation without updating the boundary conditions. The optimization of boundary conditions to match observations inside the domain is traditionally achieved through variational assimilation methods. In this work we present an ensemble smoother to improve the tidal boundary values so that the model represents more closely the observed currents. To create an ensemble of dynamically realistic boundary conditions, a cost function is formulated which is directly related to the probability of each perturbation. This cost function ensures that the perturbations are spatially smooth and that the structure of the perturbations satisfies approximately the harmonic linearized shallow water equations. Based on those perturbations an ensemble simulation is carried out using the full three-dimension General Estuarine Ocean Model (GETM). Optimized boundary values are obtained using all observations within the assimilation period using the covariances of the ensemble simulation. [less ▲]

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See detailOceanic CO2 sink : the contribution of the marine cryosphere
Delille, Bruno ULg; Vancoppenolle, M.; Tilbrook, B. et al

Conference (2009, September)

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See detailSAXS Data Analysis of Ordered and Disordered Morphologies With Gaussian Random Field Models
Gommes, Cédric ULg; Goderis, Bart

Conference (2009, September)

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See detailPaleophytogeographic distribution of Devonian miospore assemblages
Breuer, Pierre; Steemans, Philippe ULg; Di Pasquo, Mercedes

Conference (2009, September)

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See detailWorld Federation of Neurosurgical Societies
Martin, Didier ULg

Conference (2009, August 30)

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See detailAssociations among BCS, milk production and days-open in Walloon primiparous dairy cows
Massart, Xavier; Laloux, Laurent; Bastin, Catherine ULg et al

Conference (2009, August 27)

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See detailHet Leerdercorpus Nederlands in theorie en in de praktijk
Perrez, Julien ULg; Degand, Liesbeth

Conference (2009, August 24)

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See detailThe Danish Model: The case of partnership dissolution in cross national comparison
Gavray, Claire ULg; bould, sally; Schmaus, Gunther

Conference (2009, August 21)

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See detailStakeholders’ involvement as a social construct process, A use of the Actor Network Theory
El Abboubi, Manal ULg; Cornet, Annie ULg

Conference (2009, August 11)

We address the question of how organisations can gain the involvement of their stakeholders in CSR certifications projects. Applying the stakeholder theory and the actor network theory, we conceptualize ... [more ▼]

We address the question of how organisations can gain the involvement of their stakeholders in CSR certifications projects. Applying the stakeholder theory and the actor network theory, we conceptualize stakeholder involvement in the certification process of a diversity label. We also delineate the potential of our framework for future managerial applications. [less ▲]

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See detailVolition and planned behaviour theory: How to fill the gap between intention and performance?
Broonen, Jean-Paul ULg

Conference (2009, August 06)

This study evaluated the contribution of implementation intentions over the constructs of the theory of planned behaviour (TPB) in testing a confirmatory model explaining the relationships between ... [more ▼]

This study evaluated the contribution of implementation intentions over the constructs of the theory of planned behaviour (TPB) in testing a confirmatory model explaining the relationships between antecedents of academic achievement for university students. It was found that the effects of intention to perform and its classic antecedents on exams performance were mediated by implementation intentions with a considerable increase of amount of explained variance above the contribution of the constructs of TPB. [less ▲]

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See detailAcademies of Science in 18th-Century Europe and the Application of Scientific Methods on Exploration. A Comparative Study.
Vandersmissen, Jan ULg

Conference (2009, August 01)

In the 18th century, exploration witnesses a growing tendency towards a systemization of the observation and registration of scientific data overseas. Explorers come under the influence of scientists who ... [more ▼]

In the 18th century, exploration witnesses a growing tendency towards a systemization of the observation and registration of scientific data overseas. Explorers come under the influence of scientists who want to intervene in the practice of scientific travelling by formulating specific guidelines for field investigation. These scientists themselves are subject of the growing demand of central state governments for verified knowledge on the utility of new discoveries in the field of geography and natural history. Exploration enters a new phase in its development and becomes the instrument of a utilitarian state directed scientific policy. Each of the imperial powers of Europe has an Academy of science or a learned society that plays a crucial role in this development. Nonetheless, we witness some remarkable differences in approach between these nations and hence between these learned societies. In this paper I make a comparative analysis of the instruction texts addressed to explorers by the Academies of science of 18th-century Europe, from the Parisian Académie royale des Sciences to the Royal Society of London and the Imperial Academy of Sciences in Saint Petersburg. [less ▲]

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See detailGeometric Study of Mixed-integer Sets from Two Rows of Two Adjacent Simplex Bases
Louveaux, Quentin ULg

Conference (2009, August)

We generalize the study of sets arising from two rows of a simplex tableau by considering bounds on the nonbasic variables. We show that new classes of facets arise that cannot be obtained from triangles ... [more ▼]

We generalize the study of sets arising from two rows of a simplex tableau by considering bounds on the nonbasic variables. We show that new classes of facets arise that cannot be obtained from triangles and quadrilaterals. Specifically, when exactly one upper bound on a non-basic variable is introduced, inequalities that can be derived from pentagons involving up to six variables also appear. [less ▲]

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See detailAphid-ant mutualism: How do aphids focus ant foraging?
Verheggen, François ULg; Detrain, Claire; Diez, Lise et al

Conference (2009, August)

The mutualistic relationships that occur between myrmecophilous aphids and ants are based on the rich food supply that honeydew represents for ants and on the protection they provide against aphid natural ... [more ▼]

The mutualistic relationships that occur between myrmecophilous aphids and ants are based on the rich food supply that honeydew represents for ants and on the protection they provide against aphid natural enemies. While aphid predators and parasitoids actively forage for oviposition sites by using aphid semiochemicals, scouts of aphid-tending ant species would also benefit from locating honeydew resources by orienting toward aphid pheromone sources. The present study aims to identify the chemical factors that attract ants and that maintain their mutualistic relationships with aphids. The perception and behavioral impact of Aphis fabae alarm pheromone, namely (E)-β-farnesene, on Lasius niger were firstly investigated using electroantennography and a four-arm olfactometer. Aphis fabae honeydew sugar composition was subsequently analyzed while the foraging and recruiting behaviour of L. niger scouts towards each of the identified sugars was studied. Clear electrical depolarisations were observed from L. niger scout antennae to stimulations of A. fabae alarm pheromone. Scouts were significantly attracted toward (E)-β-farnesene in the four-arm olfactometer, suggesting for the first time that the latter compound is a key chemical in the establishment of the mutualism. Aphis fabae honeydew consisted of 9 identified mono-, di- and tri-saccharides and 8 hydrocarbons that could not be identified. The main identified sugars were sucrose, fructose, glucose and melezitose. L. niger scouts showed the following drinking preferences for the tested sugars: melezitose = sucrose = raffinose > glucose = fructose > maltose = trehalose = melibiose = xylose, with a recruitment launched toward the first three sugars. Therefore, ant scouts may use aphid semiochemicals to locate at distance an aphid colony and subsequently estimate honeydew quality by tasting it before recruiting conspecifics and establishing a mutualistic relationship. [less ▲]

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See detailDo Higher Education syllabi and oral course introduction affect student’s motivation to study ? Measuring the impact of syllabi from specifically trained Faculties on students’ perceptions of controllability, course value and competency
Leduc, Laurent ULg

Conference (2009, August)

As defined by Altman and Cashin (1992), “the primary purpose of a syllabus is to communicate to one’s students what the course is about, why the course is taught, where it is going, and what will be ... [more ▼]

As defined by Altman and Cashin (1992), “the primary purpose of a syllabus is to communicate to one’s students what the course is about, why the course is taught, where it is going, and what will be required of the students for them to complete the course with a passing grade”. According to several authors, one of the functions of the syllabus is to motivate students: it “conveys enthusiasm for the subject and sparks student interest and motivation” (Hammons & Shock, 1994), “warm syllabi explain expectations in a clear and friendly fashion, encourage and motivate students” (Slattery & Carlson, 2005), “the course syllabus should generate interest and motivate students to take responsability to learn the contents of the course” (Johnson, 2006), “we studied teachers who have enormous success in helping and encouraging their students to achieve remarkable learning and found they usually produce a certain kind of syllabus” (Bain, 2004). Some researchers (Thompson, 2007) have also pointed out different oral strategies used by teachers when presenting their courses for the first time to students in order to positively affect them on this aspect. But the question is: can this very early written / oral transmission of information really impact students’motivation for learning in some courses? In the University of Liège, professors have to submit every year for each of their courses a one page (at least) standardized syllabus (called engagement pédagogique). In addition, they usually start their first lesson with introductory speeches that plays the same role. In 2008, IFRES (Institute for Training and Research in Higher Education) has delivered pedagogical training and guidelines to new faculties in order to promote these two kinds of motivating communications especially with their freshmen and sophomores audiences. As the person in charge with that training, I focused on Viau’s model of motivation dynamics (1997). The specific suggestions I gave consisted in taking into account various kinds of students’ perceptions (1) of competency (“a perception that a student has about him(her)self and through which he/she assesses his/her ability to suitably accomplish an activity that he/she is not sure to carry off”), (2) of controlability (“the perception of the control that a student has on the course of an activity and on its consequences”) and (3) of activities value (“the opinion that a student expresses on the interest and the usefulness of a pedagocical activiy according to the goals he/she pursues”) in one’s written and oral communication with students about pedagogical and practical aspects of a course. At the beginning of the academic year following the delivery of those guidelines and training sessions, the wording of syllabi and oral speeches produced by 10 of those new faculties was analysed from their motivational potential’s point of view. In the same time, questionnaires were submitted to the 1400 students of their 12 introductory courses, in order to investigate the corollary impact of those information transmissions on learners’ motivational dynamics. Before and after their reception of the oral and written messages from their respective teachers, student’s levels of perception concerning the value of the course, concerning their own competency to succeed in it and concerning their controlability, have been compared in order to measure hypothetical gains due to syllabi and face-to-face course introduction. We have studied relations between students who have actualy read / not read syllabi, or who have actually listened / not listened to oral presentation of the course, and their level of perception of Viau’s three motivational factors. Other relations between variables like students’ perceptions of their own teacher (resulting from the content and tone of his/her messages) or the presence / absence of a rationale for some particular items of information have also been studied. [less ▲]

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See detailTransfer of heroin profiling method from conventional GC-MS to Fast-GC-MS and UHPLC-MS/MS
Debrus, Benjamin ULg; Broséus, Julian; Guillarme, Davy et al

Conference (2009, August)

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See detailGenetic evaluation considering phenotypic data and limited molecular information using a novel equivalent model: Case study using effect of the mh locus on milk production in the dual-purpose Belgian Blue breed
Colinet, Frédéric ULg; Gengler, Nicolas ULg

Conference (2009, August)

The introduction of molecular information into genetic evaluation systems is currently under research. Based on an equivalent method, we developed from existing theory a new alternative strategy for the ... [more ▼]

The introduction of molecular information into genetic evaluation systems is currently under research. Based on an equivalent method, we developed from existing theory a new alternative strategy for the prediction of gene effects and especially their smooth integration into genetic evaluations. Underlying hypothesis were based on the idea that knowledge of genotypes will not affect overall additive genetic variance but only change expected values of genetic effects for animals with known genotypes. However, all animals could not be genotyped. Thus, the developed equations were modified to allow the integration of the known genotype for a portion of the population. This strategy was tested for the mh locus (responsible for the double-muscling phenotype) in dual-purpose Belgian Blue cattle. The genotype was determined for 123 bulls and 1940 cows (+/+ 19.5, mh/+ 39.3 and mh/mh 41.2%). These animals had 11,150 daughters with test-day (TD) records. The genotypes were incorporated into a modified genetic evaluation based on the current routine multi-trait multibreed test-day model used in the Walloon Region (Belgium). Data used included 12,829,309 TD records for 689,057 dairy cows in production. The pedigree file contained 1,606,024 animals (cows with TD records and ancestors). Computation of the modified mixed model equations was done solving iteratively two systems of equations, one for the polygenic effects and one for the gene effect until the relative differences in the gene solutions were below 10-5. A linear extrapolation was also used to speed up the convergence of gene effects. As expected, the mh locus exerts negative effects on milk production traits. For the first three lactations, the average estimated allelic substitution effects were -158.7 kg milk, -8.93 kg fat and -5.64 kg protein per lactation (305 days). [less ▲]

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See detailEntanglement of random localized and multifractal states
Martin, John ULg; Giraud, Olivier; Georgeot, Bertrand

Conference (2009, August)

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See detailBiting midges (Ceratopogonidae: Culicoïdes) in Belgium: a comparison between indoor and outdoor trapping in cattle and sheep farms.
Losson, Bertrand ULg; Robert, Nancy ULg; Paternostre, Julien ULg et al

Conference (2009, August)

Bluetongue, a vector born disease of ruminants, was identified for the first time in Northern Europe in 2006. The vectors are insects of the family Ceratopogonidae, genus Culicoides. In Belgium, no recent ... [more ▼]

Bluetongue, a vector born disease of ruminants, was identified for the first time in Northern Europe in 2006. The vectors are insects of the family Ceratopogonidae, genus Culicoides. In Belgium, no recent data were available about the biology of these insects including their feeding habits and behaviour. The present study was carried out in order to evaluate the indoor and outdoor activity of these Diptera in 5 different cattle or sheep farms in 2008. Two sheep and 3 cattle farms were selected in the Province of Luxembourg, Belgium. In each farm 2 Onderstepoort Veterinary Institute (OVI) traps were installed respectively inside and outside the animal accommodation. Trapping was carried out twice a week from 17:00 until 24:00.The collecting vials were replaced every hour. A portable suction trap (BackTrap® U.S.A) was used twice on each visit to collect midges on the animals. In each farm the study was carried out for 6 successive weeks, 2 farms being monitored together. The study began on July 28th and ended on November 30th 2008. A total of 2591 culicoides were trapped. A majority of those (88.76%) were trapped indoors whereas 10.03% were trapped outdoors and 1.21% directly on the animals. The ambient temperature had a marked effect very few culicoides being trapped below 13°C. Three main species or species complex were identified both indoors and outdoors: C. obsoletus/scoticus, C. dewulfi, C. chiopterus. They represented 98.93% and 85.03% indoors and outdoors respectively. On the animals only C. obsoletus/scoticus and C. dewulfi were found. [less ▲]

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See detailExpressing female fertility in the Walloon region of Belgium: how to do?
Vanderick, Sylvie ULg; Bastin, Catherine ULg; Gengler, Nicolas ULg

Conference (2009, August)

Since September 2007, the Walloon Region of Belgium has used a genetic evaluation system for pregnancy rate in Holsteins and has participated in 3 of the 5 MACE trait INTERBULL runs for female fertility ... [more ▼]

Since September 2007, the Walloon Region of Belgium has used a genetic evaluation system for pregnancy rate in Holsteins and has participated in 3 of the 5 MACE trait INTERBULL runs for female fertility. In order to define general way of female fertility expression, a principal component analysis was carried out on six published foreign female fertility indexes. Results of were used to compute a direct female fertility index with the INTERBULL international female fertility proofs available on the Walloon scale. An indirect female fertility index was also developed in order to increase reliability of young bulls. Approximate procedure based on selection index was used to combine both indexes in an overall index called combined female fertility index. This index was highly correlated with the direct female fertility index (.96) and the first principal component (.85), therefore it was considered as good expression of female fertility. Moreover, this allowed recovering 4,019 INTERBULL bulls with a publishable female fertility index. [less ▲]

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See detailIncidence of winter feeding, parasitism, and housing on the growth performances of dairy heifers in Wallonia.
Picron, Pascale ULg; Foridmont, Eric

Conference (2009, August)

With a replacement rate of 30 % in dairy herds, it is essential to ensure the best rearing conditions of young cattle for the development of future dairy cows. The aim of this study was to quantify the ... [more ▼]

With a replacement rate of 30 % in dairy herds, it is essential to ensure the best rearing conditions of young cattle for the development of future dairy cows. The aim of this study was to quantify the incidence of key management aspects such as housing, parasitism and winter feeding on growth performances of dairy heifers. Thirty farmers (774 heifers), located in the main dairy regions in Wallonia, participated to the survey. Development and growth were determined using Heart Girth (HG) measurements and compared with a French reference. Feed intake was estimated from the French Fill Unit System. A prediction equation of BW from HG, related to the genetic features of Walloon dairy herds (n = 256, BW = 0,0005 HG2.6161, r² = 0,96), was developed. The results suggested that 80 % of the breeders could pretend to an early calving, at 24 – 26 month of age. For half of the others, a lack of net energy supply in the diet could explain a growth delay. On the other hand, the protein supply was too high in 90 % of the diets compared to the animal’s requirement. This was due to the large utilization of grass silage. Ventilation efficiency, estimated by the difference of hygrometry inside and outside the barns, was not optimal in 40 % of the farms. This suggested that heifers were often accommodated in less adapted barns. The parasitism management did not differ fundamentally from one farm to another. Globally, heifers were treated systematically (1 to 4 treatments/year) and did not acquire a sufficient immunity at the end of the first grazing period (estimated by blood pepsinogen measurement). They should be treated again for the next grazing season. Knowing that the treatment cost varied between 5 and 21 € in drugs per heifer and per year, a better parasitism management in the future should improve the economical and ecological performance. [less ▲]

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See detailAurora at Earth, Jupiter and Saturn: a comparative view
Gérard, Jean-Claude ULg

Conference (2009, August)

The interaction of the solar wind with the magnetospheres of the giant planets is different from that with the terrestrial magnetosphere in several respects bearing consequences on the morphology and ... [more ▼]

The interaction of the solar wind with the magnetospheres of the giant planets is different from that with the terrestrial magnetosphere in several respects bearing consequences on the morphology and dynamics of the aurora: - the magnetospheres of the outer planets are dominated by the planetary rotation that can provide much of the energy for the processes acting within these magnetospheres. - the circulation of plasma may be driven by mass loading of the giant magnetospheres by moons and rings rather than by reconnection with the IMF. - the magnitude and orientation of the interplanetary magnetic field plays a key role in controlling the Earth’s auroral dynamics whereas the solar wind dynamic pressure appears as a key factor in triggering auroral intensification on Saturn. - The combination of imaging and spectral techniques indicates the characteristic energy of the auroral electrons is comparable on Earth and Saturn, but higher energies are associated with the Jovian aurora. As a consequence, Jupiter’s aurora appears relatively shielded from solar wind influences, except inside the auroral oval where transient bright emission has been observed following sudden compressions of the magnetosphere. The size and brightness of the main oval shows only a week dependence on solar wind conditions. By contrast, Saturn’s aurora is quite responsive to solar wind perturbations, as was observed during campaigns of concurrent observations between HST and Cassini. Auroral intensification events that are reminiscent of shock-induced Earth aurora appear to be triggered by sudden increases of the solar dynamic pressure more than by changes in the IMF orientation. However, simultaneous HST-Cassini observations indicate that localised auroral brightenings and ENA acceleration events may be observed under quiet solar wind conditions. The occurrence of substorms is a key characteristics of the Earth’s auroral dynamics. Localized auroral enhancements have also been observed on Jupiter and Saturn. They have been associated to reconnection events causing events similar to substorms. [less ▲]

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See detailSaturn's equinoctial auroras
Nichols, J. D.; Gérard, Jean-Claude ULg; Grodent, Denis ULg et al

Conference (2009, July 27)

Detailed reference viewed: 7 (2 ULg)
See detailThe variability of auroral emissions on Jupiter and Saturn
Clarke; Nichols; Gérard et al

Conference (2009, July 27)

Detailed reference viewed: 2 (0 ULg)
See detailThe morphology of equatorial electron beams at Io
Jacobsen, S.; Saur, J.; Neubauer, F. M. et al

Conference (2009, July 27)

Detailed reference viewed: 6 (1 ULg)
See detailNews from outer worlds
Grodent, Denis ULg

Conference (2009, July 27)

Detailed reference viewed: 4 (0 ULg)
See detailDoes Saturn's UV aurora vary with SKR phase?
Nichols, J. D.; Cowley, S. W. H.; Clarke, J. T. et al

Conference (2009, July 27)

Detailed reference viewed: 5 (1 ULg)
See detailHST observations of Europa's atmospheric UV emission
Saur, J.; Feldman, P. D.; Strobel, D. F. et al

Conference (2009, July 27)

Detailed reference viewed: 8 (2 ULg)
See detailAsset Management Forum
Bodson, Laurent ULg

Conference (2009, July 23)

Detailed reference viewed: 27 (4 ULg)
Peer Reviewed
See detailLa recherche d’une forme théâtrale pour les sans-voix
Delhalle, Nancy ULg

Conference (2009, July 17)

Detailed reference viewed: 30 (11 ULg)
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See detailDiversity management status in morocco. an exploratory stydu
El Abboubi, Manal ULg; El Kandoussi, Fatima

Conference (2009, July 16)

The purpose of this article is to explore diversity management specificities in arab countries, especially in Morocco (North Africa). We analyse organisational initiatives, managers’ perception and the ... [more ▼]

The purpose of this article is to explore diversity management specificities in arab countries, especially in Morocco (North Africa). We analyse organisational initiatives, managers’ perception and the way they mainstream diversity tools in their management. The Moroccan industry is based on two major sectors: agriculture food and textile. Those two activities represent more than 50% of the PIB, 70% of the national employment and 75% of exportations. We focus our study on those two sectors which are a pillar of the morrocan economy. Our sample consist of 30 questionnaire sent to companies that have more than 50 employees. We received 16 answers. We questioned CEOs, managers, middle managers and employees. The main contribution of the research is that moroccan leaders are aware of their responsibilities to implement and carry out diversity projects. The main topics mentioned concerns equality and gender. However, they have no skills or power to ensure that responsibilities fully. Diversity management is not included in the strategy. It remains a minor task operated mainly by the human resource department. Morrocan managers need more specific trainings and a global governmental policy to guide their actions. Employees are not well informed about their rights. Moreover, Morocco will open a free exchange zone in 2010. This is an opportunity for many international companies to invest in the country. Most of them are from Europe and USA. They are well informed about diversity management, especially gender issues. This represents a threat for Moroccan companies who feel the urgency to develop a national framework for diversity management. Our research is still under study. We are collecting more data and we aim to integrate some extra stakeholders in the sample. Mainly the government and the local communities. The fact that we interviewed only managers gives us a limited view of the diversity management status in Morocco. [less ▲]

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See detailSérologies Mycoplasma pneumoniae et Chlamydia au CHU de Liège.
HUYNEN, Pascale ULg

Conference (2009, July 16)

Detailed reference viewed: 7 (0 ULg)
Peer Reviewed
See detailA Capability Approach to the European Directive on Parental Leave
Orianne, Jean-François ULg

Conference (2009, July 16)

Detailed reference viewed: 32 (7 ULg)
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See detailUnusual quantitative (co)polymer chain coupling reaction based on isoprene and cobalt complexes
Debuigne, Antoine ULg; Jérôme, Christine ULg; Detrembleur, Christophe ULg

Conference (2009, July 15)

Nowadays, progresses in medicine, biotechnology, microelectronic and many other fields are more and more sustained by the development of novel polymer materials with constantly improved properties and ... [more ▼]

Nowadays, progresses in medicine, biotechnology, microelectronic and many other fields are more and more sustained by the development of novel polymer materials with constantly improved properties and well-defined molecular parameters. In this context, we designed an innovative and very promising tool for macromolecular engineering. This technique, called Isoprene-Assisted Radical Coupling (I-ARC), allows to couple quantitatively polymer chains preformed by Cobalt-Mediated Radical Polymerization (CMRP), an efficient controlled radical polymerization system for vinyl acetate (VAc) and acrylonitrile (AN). Typically, addition of isoprene to well-defined polymers prepared by CMRP invariably leads to the quantitative coupling reaction of the chains, as assessed by the perfect doubling of the molar mass of the polymer. Importantly, the I-ARC reaction is not limited to macromolecules with low molar masses and homopolymers, contrary to the previously reported radical chains coupling methods. Indeed, when applied to diblock copolymers, I-ARC constitutes a straightforward approach for the synthesis of telechelic symmetrical ABA triblock copolymers, as illustrated by the preparation of poly(vinyl acetate)-b-poly(acrylonitrile)-bpoly(vinyl acetate) triblock copolymers and their derivatives. [less ▲]

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See detailProfessional acts and services rendered by psychologists : a Belgian study.
Hansez, Isabelle ULg; Mormont, Marie; Côte, Virginie

Conference (2009, July 10)

Detailed reference viewed: 7 (1 ULg)
See detailSteel construction and sustainability
Reiter, Sigrid ULg

Conference (2009, July 10)

Detailed reference viewed: 33 (9 ULg)
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See detailLeuven English Old to New (LEON): Some ideas on a new corpus for longitudinal diachronic studies.
Petré, Peter ULg

Conference (2009, July 09)

Despite the explosion of diachronic corpora of English in the last few decades, still not a single corpus exists that covers the entire documented history of English. Although its compilation is generally ... [more ▼]

Despite the explosion of diachronic corpora of English in the last few decades, still not a single corpus exists that covers the entire documented history of English. Although its compilation is generally perceived as most attractive (Rissanen 2000: 13), corpus compilers do not seem to believe in its creation in the near future. This is regrettable, as many linguists dealing with longitudinal developments such as grammaticalization need to cover very long time spans, and are forced to combine several, not necessarily compatible, corpora (e.g. Hilpert 2008, van Linden 2009). Clearly, their results are less reliable than they might be if a single corpus existed (for example, Gries and Hilpert’s data (2008) show a major shift in the collocational profile of shall about 1710; however, this is precisely where one corpus they use ends and a second – rather different one – begins). So I tentatively started compiling a corpus myself, provisionally called LEON (Leuven English Old to New). The basic architecture of LEON comprises a 400,000 word corpus for each HC-period, and after 1710 for the periods 1710-1780, 1780-1850, 1850-1920, 1920-1990 and post-1990. Data available from 1250-1350, a less well represented period, serve as a template on which other subperiods are to be based to acquire best comparability of genre and region. To make up for the lack of some genres (letters, diaries) and social stratification, for each period after 1350 an additional, selfsufficient 600,000 words corpus is envisaged. While LEON is primarily conceived as a ‘meta-corpus’, mining existing corpora, some additions are envisaged too (e.g. the unedited Statutes Rwl. B.520, dated a1325). LEON does not aim at full comparability (which would be presumptuous), but wants to optimize the usefulness of concepts like ‘equal size of subperiods’ or ‘diachronic text prototype’ (HC). LEON might be, as compared to the present ‘big evil’, a ‘lesser evil’. References Gries, Stefan Th. and Martin Hilpert. The identification of stages in diachronic data: variability-based neighbour clustering. Corpora Vol. 3 (1): 59–81. Hilpert, Martin. 2008. Germanic future constructions A usage-based approach to language change. Amsterdam & Philadelphia: John Benjamins. Los, Bettelou. 2005. The rise of the to-infinitive. Oxford: Oxford University Press. Rissanen, Matti & Merja Kytö. 1993. General introduction. In Rissanen, Matti, Merja Kytö & Minna Palander-Collin, eds. 1993. Early English in the computer age: Explorations through the Helsinki Corpus. Berlin: Mouton de Gruyter. 1-17. Rissanen, Matti. 2000. The world of English historical corpora: From Cædmon to computer age. Journal of English Linguistics 28: 7-20. van Linden, An. 2009. Dynamic, deontic and evaluative adjectives and their clausal complement patterns: A synchronic-diachronic account. PhD dissertation, University of Leuven. [less ▲]

Detailed reference viewed: 46 (1 ULg)
See detailIR and UV spectroscopic signatures of DNA structures in the gas phase
Gabelica, Valérie ULg

Conference (2009, July 08)

Detailed reference viewed: 11 (0 ULg)
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See detailOCCP Seminar on Dominant Positions and New Technologies
Petit, Nicolas ULg

Conference (2009, July 08)

Detailed reference viewed: 5 (0 ULg)
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See detailSur la philosophie politique de l’éducation (Foucault, Alain, Canguilhem)
Bolmain, Thomas ULg

Conference (2009, July 08)

Ce travail consiste pour l'essentiel en une brève réévaluation des Propos sur l'éducation d'Alain (1932). Ce travail est entrepris à la lumière d'un problème précis : celui des rapports entre philosophie ... [more ▼]

Ce travail consiste pour l'essentiel en une brève réévaluation des Propos sur l'éducation d'Alain (1932). Ce travail est entrepris à la lumière d'un problème précis : celui des rapports entre philosophie critique et apprentissage à la philosophie (et, corrélativement, l'importance de la position du maître dans ce processus). Les recherches d'Alain devront à cet égard être rapprochées de certaines propositions de G. Canguilhem (élève du précédent) et de M. Foucault (lui-même disciple de Canguilhem). Au total, on montrera qu'une réflexion sur l'éducation est indispensable à l'éclaircissement du concept de critique, qui fait le centre de la philosophie depuis Kant. [less ▲]

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See detailA discrete competitive facility location model with variable attractiveness
Kucukaydin, Hande ULg; Aras, Necati; Altinel, I. Kuban

Conference (2009, July 08)

We consider the discrete version of the competitive facility location problem in which new facilities have to be located by a new market entrant to compete against already existing ones that may belong to ... [more ▼]

We consider the discrete version of the competitive facility location problem in which new facilities have to be located by a new market entrant to compete against already existing ones that may belong to one or more competitors. The objective of the firm is to determine the locations of the new facilities and their attractiveness levels to maximize the profit. We formulate a mixed-integer nonlinear programming model for this problem and propose three methods for its solution: a Lagrangean heuristic, two branch-and-bound methods using Lagrangean and nonlinear programming relaxations. [less ▲]

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See detailLe droit procéduralisé comme intermédiaire : méthode et approche diachronique
Cerfontaine, Gaëtan ULg

Conference (2009, July 07)

Cette communication est basée sur une recherche empirique menée pendant près d'un an sur un programme européen de développement durable de l'économie rurale appelé LEADER (Liaison Entre Actions de ... [more ▼]

Cette communication est basée sur une recherche empirique menée pendant près d'un an sur un programme européen de développement durable de l'économie rurale appelé LEADER (Liaison Entre Actions de Développement de l'Economie Rurale). Ce dernier s'inscrit dans un mouvement, abondamment commenté par la littérature sociologique, de territorialisation et de procéduralisation de l'action publique (Duran, Thoenig, 1996), conférant aux acteurs locaux un pouvoir inédit de définition des enjeux. La majorité de ces travaux souligne les relations d'interdépendance et les modalités de coordination entre les différents acteurs (Le Galès, 1995) et met également en évidence un système articulant les différentes logiques d'action (Crozier, Friedberg, 1977 ; Musselin, 2005). Toutefois, les interactions et les jeux de pouvoir, qui figurent au cour de la sociologie de l'action organisée, ne rendent compte, à eux seuls, que de certaines formes relativement stables de la vie des organisations (Friedberg, 1993). Basée sur une méthodologie fondée sur les entretiens face à face (Friedberg, 1988), cette approche analytique semble mieux se prêter à l'analyse de la permanence que des processus qui sous-tendent l'innovation. L'apparition depuis quelques années d'analyses symétriques conférant un pouvoir d'actantialité aux objets (Callon, 1986) a contribué au développement d'approches par les instruments (Le Galès, Lascoumes, 2005) pouvant intégrer les questions classiques que posent la science politique et la sociologie de l'action publique (Lascoumes, 1996). Considérer les politiques procédurales comme des objets intermédiaires (Mélard, 2008) permet ainsi de rendre compte de leur capacité de médiation (Latour, 2006) et de donner un compte rendu de l'action plus dynamique. Comme ce fut le cas pour notre travail, l'entrée dans l'analyse par les controverses comme le suggère ce courant théorique n'est cependant pas toujours possible. L'entrée par les nombreux documents produits tels que les programmes de développement stratégique, les présentations de projets ou les évaluations, constitue ainsi, non pas une solution du moindre mal, mais au contraire, comme l'a montré Florian Charvolin (2003), une méthode permettant de déployer toute la capacité médiatrice de ces instruments procéduralisés [less ▲]

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See detailVehicle loading optimization with stochastic supply
Amand, Guillaume ULg; Arda, Yasemin ULg; Crama, Yves ULg et al

Conference (2009, July 07)

The increased availability of information makes it possible to coordinate processes which are usually functionnally separated in large companies, such as production and transportation. This work ... [more ▼]

The increased availability of information makes it possible to coordinate processes which are usually functionnally separated in large companies, such as production and transportation. This work investigates the optimization of vehicle loading for individual orders over a multiperiod horizon when items have stochastic release dates from production, and time windows are imposed for delivery at the customer plant. The loading decisions are made in order to minimize the expected cost. Starting from the deterministic model, we develop scenario-based models for the stochastic version of the problem and we investigate the performance of various solution methods. [less ▲]

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Peer Reviewed
See detailDesertification in the Sahel: climatic or human driven causes?
Ozer, Pierre ULg; Ozer, André ULg

Conference (2009, July 07)

Over the last decades, the Sahel of West Africa has suffered two dramatic contiguous droughts. Currently, and since the early 1990, rainfalls record an amelioration that tends towards the average of ... [more ▼]

Over the last decades, the Sahel of West Africa has suffered two dramatic contiguous droughts. Currently, and since the early 1990, rainfalls record an amelioration that tends towards the average of precipitation previous to the 1970s. However, this improvement may be due to increasing rainfall intensity and it seems that the length of the rainy season did not show any extension when compared to the 1970s and 1980s. On the other hand, the Sahelian population has been multiplied by 3 since 1950 and is foreseen to be multiplied by 10 by the second half of the 21st century. Increasing urban population levels are much more impressive and conduct important environmental distresses every day. Such increasing human pressure leads to uncontrolled deforestation in order to satisfy the needs in fuel wood, wood for construction and shifting cultivation. In addition, always larger herds for contracting range conditions lead to overgrazing and trampling. All these processes provoke the degradation of the vegetation cover, a constant diminution of crop yields, as well as a strong reduction of the biodiversity. One of the numerous consequences is the reactivation of previously fixed dunes that were formed during the last interpluvial phase (18000 BP). Our research provides a state of the art of recent findings and controversy that surround the desertification processes and concludes that if the droughts of the 1970s and 1980s have had dramatic consequences for the population of the Sahel, current and coming increasing human pressure will very likely enhance desertification processes of the southern fringe of the Sahara. [less ▲]

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See detailTherapeutic projects in Belgium : a post-bureaucratic way
Schoenaers, Frédéric ULg; Cerfontaine, Gaëtan ULg

Conference (2009, July 07)

Since the end of the 1980s, a new vision of mental health has been developed under the influence of the Belgian "Psychiatry" permanent work group of the National Council of Hospital Facilities. This new ... [more ▼]

Since the end of the 1980s, a new vision of mental health has been developed under the influence of the Belgian "Psychiatry" permanent work group of the National Council of Hospital Facilities. This new vision adopts a holistic perspective which takes into account the diversity of factors at stake and aims to give a central place to the patient and his or her needs. The principles on which this innovative vision lies fall within an international trend (among other developed in the WHO declaration of Helsinki) which aims to put the patient at the centre of the system but also in field actor practices. This vision is made concrete in a restructuring of mental health care sector in terms of care circuits and networks, which necessitates an "interinstitutional" and interdisciplinary cooperation. With this approach the old bureaucratic model of organising a sector would be replaced by a post-bureaucratic one marked by notions such as networking or negotiation. The "Therapeutic projects", organised by a Royal Decree in 2006 after a long term decision making process, constitute the experimental phase of this new mental health care concept. It is a wide ranging pilot project which aims to achieve, by the end of the three-year experimental phase, the definition of guidelines and the implementation of norms as regards mental health care circuits and networks. The purpose of this contribution is to (1) give a presentation of the mechanisms which have lead to the creation and implementation of the therapeutic project. Using a case study method, we will also (2) analyse the functioning of a therapeutic project, showing at the one hand the tensions between the philosophy of the project (network functioning and flexibility) and the technocratic temptation developed by the administration which funds them, and, at the other hand, we will also examine how the "traditional" psychiatric rationality is able to maintain its central position in a context where other fields and actors should emerge. Finally, (3) as the data that we present have been collected during a FP6 integrated research project which aims to analyse the links between (new forms of) knowledge and policy making, we will develop a methodological discussion about the way sociology (of law) can trace the place and role of knowledge in policy making." [less ▲]

Detailed reference viewed: 35 (9 ULg)
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See detailRI48 in very early AD
Adam, Stéphane ULg; Salmon, Eric ULg

Conference (2009, July 06)

Detailed reference viewed: 14 (1 ULg)
See detailLe film exposé : Retour(s), reprise(s), surprise(s)
Thonon, Jonathan ULg

Conference (2009, July 05)

Detailed reference viewed: 15 (0 ULg)
See detailUnderstanding the Mechanism of Amyloid Fibrils Formation by Human Lysozyme
Dumoulin, Mireille ULg

Conference (2009, July 04)

Detailed reference viewed: 7 (1 ULg)
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See detailDynamic analysis and preliminary design of twin-cylinder engines for clean propulsion systems
Louvigny, Yannick ULg; Vanoverschelde, Nicolas; Janssen, Guy et al

Conference (2009, July 02)

Facing environmental and energy challenges, automotive industry has to improve the fuel economy of vehicles and to reduce their polluting emissions. In this particular context, small twin-cylinder engines ... [more ▼]

Facing environmental and energy challenges, automotive industry has to improve the fuel economy of vehicles and to reduce their polluting emissions. In this particular context, small twin-cylinder engines regain interest for using in urban cars or as prime movers in hybrid electric cars. One difficulty with engine having few cylinders (three or less) comes from the balancing of the inertia forces created by the moving parts. Several models (from simple analytical model to complex flexible multibody simulation) of different configurations of twin-cylinder engine are developed. These models allow computing the inertia forces and moments generated by the engines and computing the strains and stresses of engine components. An important step is the engine balancing by modification of the crankshaft counterweights or by addition of balance shafts. The effect of the gas pressure on the balancing and on the component’s strains and stresses is also modelled. At the end, a comparison of the different configurations of twin-cylinder engine is provided [less ▲]

Detailed reference viewed: 135 (12 ULg)
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See detailSpatial distribution of accumulation in the Adélie Land - Comparison of the Antarctic GLACIOCLIM-SAMBA observation data with remote sensing techniques and high-resolution climate models
Agosta, Cécile ULg; Genthon, Christophe; Favier, Vincent et al

Conference (2009, July)

The Surface Mass Balance (SMB) of Antarctica is typically much larger within the first 200 km from the coast than further inland. This is also likely where much of the SMB change is expected due to ... [more ▼]

The Surface Mass Balance (SMB) of Antarctica is typically much larger within the first 200 km from the coast than further inland. This is also likely where much of the SMB change is expected due to climate warming. That is why since 2004 the GLACIOCLIM- SAMBA French observatory monitors the SMB in this region with spatial scales resolving those of climate models. A stakes line made of 91 stakes was deployed along a 150 km transect from the coast of Adélie Land towards Dome C on the plateau. This transect is surveyed each year and 3 complete records are now available. We first compare recent SMB measurements with older reports from the 1972-1992 period. We show that a significant fraction of the observed kilometer-scale spatial variability is stationary with time. Moreover the large spatial and inter-annual variabilities of recent measurements are consistent with the historical ones. The lateral spatial significance of the transect is then evaluated using the background remote-sensing- based model of Arthern et al. (2006). Finally, results from 3 high-resolution climate models are presented and compared with the field reports: the global atmosphere-surface climate model LMDZ4 zoomed to reach a 35 km resolution over Antarctica, the regional atmospheric climate model MAR developed for polar regions (20 km resolution) and the ECMWF analysis (50 km resolution). We show large differences between the 3 models, which don’t have the same ability to reproduce the meso-scale characteristics of the distribution of the observed SMB in the critical coast-to-plateau area. [less ▲]

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See detailEvolution of food design: from recipe to formulation concept
Blecker, Christophe ULg

Conference (2009, July)

Detailed reference viewed: 25 (6 ULg)
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See detailEquivalent mixed model for joint genetic evaluation considering molecular and phenotypic information
Gengler, Nicolas ULg; Colinet, Frédéric ULg

Conference (2009, July)

Currently efforts are underway to introduce molecular information into genetic evaluation systems. A particular situation is genomic selection however simpler cases exists where major genes are known and ... [more ▼]

Currently efforts are underway to introduce molecular information into genetic evaluation systems. A particular situation is genomic selection however simpler cases exists where major genes are known and used by breeders. A new alternative strategy for the prediction of gene effects and especially their smooth integration into genetic evaluations based on an equivalent method was developed from existing theory. Underlying hypothesis were based on the idea that knowledge of genotypes will not affect overall additive genetic variance but only change expected values of genetic effects for animals with known genotypes. The developed equations were modified to allow that not all animals were genotyped. As the underlying mixed model is open a very large range of models can be used in situations including random regression models, multipletrait, maternal effects and multiple-across-country-evaluation models. Computations involved successive solving of two mixed models, with the use of an linear extrapolation to speed up convergence of gene effects. The method was tested for several known major genes and QTL, e.g. for the mh gene in the dual-purpose Belgian Blue population in Belgium. Modifications of the method could also be developed to be useful in the context of genomic selection. [less ▲]

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See detailGenetic variability of test-day stearoyl coenzyme-A desaturase 9 activity
Arnould, Valérie ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Conference (2009, July)

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of ... [more ▼]

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of unsaturated fatty acids. The impact of feeding is well described; however, genetics effects on the milk FA composition are not well studied. Increasing the unsaturated fatty acids contents of bovine milk could have the potential to raise the nutritive and therapeutic values of dairy products. The stearoyl Coenzyme-A desaturase 9 (delta-9) gene was identified as a potential functional candidate gene affecting milk fat composition in dairy cattle. The objective of this research was to study the genetic variability on this enzyme activity across lactations. A total of 199,977 test-day records were obtained from 29,603 Holstein cows in first lactation, 154,267 records from 23,453 Holstein cows in second lactation, and 173,244 records from 75,887 Holstein cows in third and later lactations. The used model was a multiple-trait random regressions test-day model. Fixed effects were: herd × date of test, and class of age. Random effects were: herd × year of calving, permanent environmental, additive genetic, and residual effects. The studied traits were milk yield, protein content, percentage of fat, monounsaturated fatty acids estimated by mid-infrared spectrometry, and the ratios reflecting the delta-9 activity. Obtained heritability estimates of delta-9 as well as the genetic and phenotypic correlations varied across lactations. These results suggest potential improvements of milk fat composition based on delta-9 activity using animal selection and appropriate management practices. [less ▲]

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See detailA maġribī copy of the Kitāb al-Faraj baʿd aš-Šidda by the ʿIrāqī qāḍī at-Tanūḫī. Study of a University of Liège (Belgium) manuscript
Franssen, Elise ULg

Conference (2009, July)

Author introduces the Arabic manuscript collection in Liège, Belgium, which is not as widely known as it deserves to be. She singles out one particular manuscript, an 11/16th century copy of the well ... [more ▼]

Author introduces the Arabic manuscript collection in Liège, Belgium, which is not as widely known as it deserves to be. She singles out one particular manuscript, an 11/16th century copy of the well-known work Kitāb al-Faraj baʿd aš-Šidda, by the ʿIrāqī qāḍī at-Tanūhkhī (327-384/939-994). She describes the manuscript and places her detailed description within the framework of the modern scholarly and bibliographical references on Abbasid literature in general and on recent developments in codicology and paleography in particular. She also discusses the relationship of the Liège manuscript with some of the printed editions of the Kitāb al-Faraj baʿd aš-Šidda. [less ▲]

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See detailUnderstanding the controversies of inter-organizational ambidexterity with actor-network theory
Antoine, Mélanie ULg; Degré, Julie ULg

Conference (2009, July)

Generally considered at an intra-organisational level, ambidexterity can also be found at inter-organisational level where organisations decide to collaborate by sharing between them activities of ... [more ▼]

Generally considered at an intra-organisational level, ambidexterity can also be found at inter-organisational level where organisations decide to collaborate by sharing between them activities of exploration and exploitation, according to their core competence. In this paper, we examine these collaborations, which are often presented as win-win solutions. In two case studies of R&D partnerships receiving public financing, we show the tensions that run through these alliances and the controversies that set the partners against each other. Our analysis, based on the actor-network theory, indicates that the conditions for successful inter-organisational ambidexterity do not exist a priori. The success of a partnership rather relies on a continuous translation process creating the convergence between the parties involved. [less ▲]

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See detailProgress in the asteroseismic analysis of the pulsating sdB star PG 1605+072
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

Conference (2009, July)

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation prop- erties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed ... [more ▼]

The hot pulsating sdB star PG 1605+072 exhibits uncommon spectroscopic and pulsation prop- erties, and is one of the biggest challenge in the field of sdB star modeling. Two hypotheses have been proposed to explain its unusually rich pulsation spectrum. The first is the natural explanation of a fast-rotating pulsator, which lifts the (2l+1)-fold degeneracy of the frequency components. Another approach, where PG 1605+072 can be seen as a slow rotator, considers that the numerous low amplitude frequency components are second- and third-order harmonics and nonlinear com- binations of the highest amplitude frequencies. We investigated the two hypotheses in the light of asteroseismology, using our latest tools - including pulsation codes that incorporate star rotation and new generation complete sdB models. The results of both approaches are presented, showing interesting results and raising new questions for our understanding of this mysterious sdB star. [less ▲]

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See detailA robust statistical approach to differential item functioning
Magis, David ULg; De Boeck, Paul

Conference (2009, July)

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See detailMultidimensional fluctuation, pseudo-guessing and carelness IRT person parameters models
Raîche, Gilles; Magis, David ULg; Blais, Jean-Guy

Conference (2009, July)

Detailed reference viewed: 21 (1 ULg)
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See detailAn item ixture model to detect differential item functioning
Frederickx, Sofie; Tuerlinckx, Francis; De Boeck, Paul et al

Conference (2009, July)

Detailed reference viewed: 15 (0 ULg)