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See detailRelationship between lactoferrin, minerals, and somatic cells in bovine milk
Soyeurt, Hélène ULg; Arnould, Valérie ULg; Bruwier, Damien et al

in Journal of Dairy Science (2008), 91(E-Suppl. 1), 542

Selection for increased mastitis resistance is hampered by lack of available data. Currently, somatic cell count or score are proven indicators. However, it should be a priority to increase the number of ... [more ▼]

Selection for increased mastitis resistance is hampered by lack of available data. Currently, somatic cell count or score are proven indicators. However, it should be a priority to increase the number of available indicator traits for mastitis resistance. The aim of this research was to study the relationships among potential indicator traits as lactoferrin content, concentrations of major minerals in milk (calcium, Ca; sodium, Na; phosphore, P), and somatic cell count. First, 3 calibration equations Breeding and Genetics: Breeding for Milk Quality and Test-Day Model Applications J. Anim. Sci. Vol. 86, E-Suppl. 2/J. Dairy Sci. Vol. 91, E-Suppl. 1 543 were developed using partial least squares regressions to predict the contents of Ca, Na, and P in milk by mid-infrared spectrometry. A total of 1,609 milk samples were collected between March 2005 and May 2006 for 475 cows from 6 dairy breeds. Based on their spectral variability, 100 samples were selected using a principal components approach. The contents of these minerals were estimated by emission spectrometry (ICP-AES). The ratio of standard deviation to standard error of cross validation obtained for the equations predicted the contents of Ca, Na, and P were superior to 2 suggesting the use of these equations in this research. Second, the relationship between lactoferrin, minerals and somatic cells was studied using a random regressions multi-trait animal test-day model. A total of 57,973 milk samples were collected from 94 herds between April 2005 and January 2008 during milk recording in the Walloon part of Belgium. [less ▲]

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See detailContinuous-state reinforcement learning with fuzzy approximation
Busoniu, Lucian; Ernst, Damien ULg; De Schutter, Bart et al

in Tuyls, K.; Nowé, A.; Guessoum, Z. (Eds.) et al Adaptive Agents and Multi-Agent Systems III, Adaptation and Multi-Agent Learning (2008)

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. There exist several convergent and consistent RL algorithms which have been intensively studied. In their original form ... [more ▼]

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. There exist several convergent and consistent RL algorithms which have been intensively studied. In their original form, these algorithms require that the environment states and agent actions take values in a relatively small discrete set. Fuzzy representations for approximate, model-free RL have been proposed in the literature for the more difficult case where the state-action space is continuous. In this work, we propose a fuzzy approximation architecture similar to those previously used for Q-learning, but we combine it with the model-based Q-value iteration algorithm. We prove that the resulting algorithm converges. We also give a modified, asynchronous variant of the algorithm that converges at least as fast as the original version. An illustrative simulation example is provided. [less ▲]

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See detailEnquête sur les compétences documentaires et informationnelles des étudiants qui accèdent à l'enseignement supérieur en Communauté française de Belgique : Rapport de Synthèse
Thirion, Paul ULg; Pochet, Bernard ULg

Report (2008)

Cette enquête est une adaptation d’une étude équivalente réalisée, en 2002, au Québec. Le questionnaire comporte 20 questions réparties en cinq thèmes représentant les étapes de la recherche documentaire ... [more ▼]

Cette enquête est une adaptation d’une étude équivalente réalisée, en 2002, au Québec. Le questionnaire comporte 20 questions réparties en cinq thèmes représentant les étapes de la recherche documentaire. Elle vise à connaître le niveau de compétences documentaires des étudiants qui arrivent dans l’enseignement supérieur, vérifier l’adéquation de celui-ci avec la perception qu’en ont les formateurs et identifier les lacunes afin de permettre d’améliorer les formations. 31 établissements d'enseignement universitaire et non universitaire ont accepté de participer à l’étude. Le questionnaire québécois adapté à la situation belge a été envoyé en septembre 2007 à un échantillon aléatoire de 4388 étudiants accédant pour la première fois à l'enseignement supérieur. Le taux de retour s’élève à 42,57%. Après analyse, il apparaît que comme au Québec, la moyenne des résultats est faible (7,67/20). Outre diverses variables sociologiques, certaines caractéristiques des étudiants sont en lien direct avec le niveau de performance, notamment la fréquentation d'une bibliothèque dans l'enseignement secondaire, le choix d'option dans le secondaire ou le choix actuel d’étude. A contrario, l'utilisation d'Internet ne semble pas favoriser les compétences informationnelles des étudiants. Ces observations, tenant compte de toutes les limites que l'on doit accorder à une évaluation de ce type, confirment néanmoins la nécessité de proposer des formations aux étudiants pour leur permettre d’atteindre les compétences requises par le métier d’étudiant. Les lacunes observées vont permettre d’adapter les formations existantes. L'étude doit se poursuivre pour évaluer l’impact réel des formations documentaires proposées. [less ▲]

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See detailModeling Lymphangiogenesis in a three-dimensional culture system
Bruyere, Françoise; Melen-Lamalle, Laurence; Blacher, Silvia ULg et al

in Nature Methods (2008), 5(5), 431-437

Unraveling the molecular mechanisms of lymphangiogenesis is hampered by the lack of appropriate in vitro models of three-dimensional (3D) lymph vessel growth which can be used to exploit the potential of ... [more ▼]

Unraveling the molecular mechanisms of lymphangiogenesis is hampered by the lack of appropriate in vitro models of three-dimensional (3D) lymph vessel growth which can be used to exploit the potential of available transgenic mice. We developed a potent reproducible and quantifiable 3D-culture system of lymphatic endothelial cells, the lymphatic ring assay, bridging the gap between 2D-in vitro and in vivo models of lymphangiogenesis. Mice thoracic duct fragments are embedded in a collagen gel leading to the formation of lymphatic capillaries containing a lumen as assessed by electron microscopy and immunostaining. This assay phenocopies the different steps of lymphangiogenesis, including the spreading from a preexisting vessel, cell proliferation, migration and differentiation into capillaries. Our study provides evidence for the implication of an individual matrix metalloproteinase, MMP-2, during lymphangiogenesis. The lymphatic ring assay is a robust, quantifiable and reproducible system which offers new opportunities for rapid identification of unknown regulators of lymphangiogenesis. [less ▲]

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See detailUrbanisme durable - Outil d'évaluation et d'aide à la conception de projets
Boniver, Véronique ULg; Dopagne, Claude ULg; Melin, Eric ULg et al

Poster (2008)

L'outil Urbadur mis au point permet de tester, d'évaluer et d'aider à la conception de nouveaux projets de constructions neuves. Il est accessible librement sur internet et permet à tout utilisateur ... [more ▼]

L'outil Urbadur mis au point permet de tester, d'évaluer et d'aider à la conception de nouveaux projets de constructions neuves. Il est accessible librement sur internet et permet à tout utilisateur potentiel de tester en amont un projet concret en répondant à une série de questions. Dans un second temps, sur base de l'évaluation obtenue et des commentaires fournis, l'utilisateur peut modifier son projet pour augmenter sa durabilité environnementale et tester celui-ci une nouvelle fois. L'outil pourrait être amélioré mais il permet déjà, dans sa version actuelle, de concevoir progressivement des projets de construction plus durables d'un point de vue environnemental. [less ▲]

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See detailFinanciering en commercialisatie van bouwprojecten onder de Wet Breyne: capita selecta (voorovereenkomsten, verplichte vermeldingen en studiekosten)
Kohl, Benoît ULg; Vermeersch, R.

in Tijdschrift voor Bouwrecht en Onroerend Goed (2008)

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See detailEtude géomorphologique des barrages de travertin du Hoyoux
Franco, Bruno ULg; Houbrechts, Geoffrey ULg; Van Campenhout, Jean ULg et al

in Bulletin de la Société Géographique de Liège (2008)

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See detailPathologie de l'infection par Trypanosoma evansi
Antoine-Moussiaux, Nicolas ULg; Desmecht, Daniel ULg

in Annales de Médecine Vétérinaire (2008), 152(2), 94-102

Trypanosoma evansi is an extracellular parasite found in the blood and tissues of mammals, mainly causing anaemia, immune depression and central nervous system disorders. Contrary to other African ... [more ▼]

Trypanosoma evansi is an extracellular parasite found in the blood and tissues of mammals, mainly causing anaemia, immune depression and central nervous system disorders. Contrary to other African trypanosomes, T. evansi is mechanically transmitted and thus presents a worldwide distribution. This review aims at summarizing clinical and pathological data about T. evansi infections in its various hosts. It presents the actual knowledge on pathogenesis and the recent development of which open new ways for infection control. [less ▲]

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See detailRecension: "L'optimisation fiscale du patrimoine immobilier. Applications pratiques en Belgique et en France"
Kohl, Benoît ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2008)

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See detailProjets d'harmonisation du droit des contrats: rôle proactif du Barreau
Kohl, Benoît ULg

in La tribune du Barreau (2008), 4

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See detailSystematic InSAR monitoring of African active volcanic zones: What we have learned in three years, or an harvest beyond our expectations
Oreye, N.; Fernandez; Gonzalez, P. et al

in Proc. of 2008 Second workshop on USE of Remote Sensing techniques for Monitoring Volcanoes and Seismogenic Areas, Naples, Italy, 11-24 November 2008, doi: 10.1109/USEREST.2008.4740361 (2008)

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See detailEpidémiologie de l'infection par Trypanosoma evansi
Antoine-Moussiaux, Nicolas ULg; Desmecht, Daniel ULg

in Annales de Médecine Vétérinaire (2008), 152(3), 191-201

Trypanosoma evansi is an extracellular parasite, found in blood and tissues, mainly causing anaemia, immune depression and central nervous system disorders. Contrary to other African trypanosomes, T ... [more ▼]

Trypanosoma evansi is an extracellular parasite, found in blood and tissues, mainly causing anaemia, immune depression and central nervous system disorders. Contrary to other African trypanosomes, T. evansi is adapted to mechanical transmission and thus, presents a worldwide distribution. This review summarizes the epidemiological data about T. evansi from its origins to the latest developments, as its addition in 2008 to the World Organization for Animal Health (OIE) listed diseases and other diseases of importance to International Trade. This article puts emphasis on the need for a coordinated epidemiological control strategy and research for improving diagnostic and control tools. [less ▲]

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See detailDu Résume Infirmier Minimum aux Données Infirmières du Résumé Hospitalier Minimal … évolution ou révolution ?
THONON, Olivier ULg; MANNA, Mirella

in GILSON, Patrick; SUIJKERBUIJK, Hans (Eds.) Mémento de l'Art Infirmier 2008/2009 (2008)

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See detailRecension: "Actualités en droit de la responsabilité" par D. de Callatay, T. Papart et N. Simar
Kohl, Benoît ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2008)

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See detailRecension: "Les pratiques du commerce", par I. Ferrant
Kohl, Benoît ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2008)

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See detailBijzondere overeenkomsten. Koop en aanneming. Rechtspraakkroniek (1997-2007)
Kohl, Benoît ULg; Stijns, S.; Tilleman, B. et al

in Tijdschrift voor Privaatrecht (2008)

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See detailÉco-éthologie d’une population de vipères péliades (Vipera b. berus L.) dans une région de bocage du sud-ouest de la Belgique
Graitson, Eric ULg

in Bulletin de la Société Herpétologique de France (2008), 128

the preference of adders for different linear elements of the ‘bocage’, a farmland landscape crisscrossed by hedges, was studied during 2.5 years in south-West Belgium. Most individuals occurred in South ... [more ▼]

the preference of adders for different linear elements of the ‘bocage’, a farmland landscape crisscrossed by hedges, was studied during 2.5 years in south-West Belgium. Most individuals occurred in South-facing woody hedges between the autumn and the beginning of spring. During the mating period, by contrast, most individuals tended to shift of habitat and favoured 1 to 2 m wide grassy hedges with a limited shrub cover and a north-south orientation. Mating females especially favoured this latter habitat, probably because of their specific micro-climatic conditions, including a higher insulation. A few individuals, however, remained in the same habitat all year round. The identification of individuals, which was performed on the basis of features including body and head color patterns, but not on individual clipping, proved to be difficult owing to the high density of individuals. Linear elements in the form of grassy hedges, not very space-consuming, can shelter very high densities of snakes. in the context of a sharp decrease of the bocage landscape, the conservation of common European vipers relies on the maintenance of such linear landscape elements as grassy and shrubby hedges, which can be enhanced by the implementation of recent measures aiming at restoring extensive agricultural systems. [less ▲]

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See detailModave/Modave : Interprétation des datations de la séquence holocène du Trou Al’Wesse
Miller, Rebecca ULg; Zwyns, Nicolas; Stewart, John

in Chronique de l'Archéologie Wallonne (2008), 15

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