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See detailOrbits of language operations: finiteness and upper bounds
Charlier, Emilie ULg

Scientific conference (2011, August)

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See detailThe order Herpesvirales.
Davison, Andrew J; Eberle, Richard; Ehlers, Bernhard et al

in Archives of Virology (2009), 154(1), 171-7

The taxonomy of herpesviruses has been updated by the International Committee on Taxonomy of Viruses (ICTV). The former family Herpesviridae has been split into three families, which have been ... [more ▼]

The taxonomy of herpesviruses has been updated by the International Committee on Taxonomy of Viruses (ICTV). The former family Herpesviridae has been split into three families, which have been incorporated into the new order Herpesvirales. The revised family Herpesviridae retains the mammal, bird and reptile viruses, the new family Alloherpesviridae incorporates the fish and frog viruses, and the new family Malacoherpesviridae contains a bivalve virus. Three new genera have been created in the family Herpesviridae, namely Proboscivirus in the subfamily Betaherpesvirinae and Macavirus and Percavirus in the subfamily Gammaherpesvirinae. These genera have been formed by the transfer of species from established genera and the erection of new species, and other new species have been added to some of the established genera. In addition, the names of some nonhuman primate virus species have been changed. The family Alloherpesviridae has been populated by transfer of the genus Ictalurivirus and addition of the new species Cyprinid herpesvirus 3. The family Malacoherpesviridae incorporates the new genus Ostreavirus containing the new species Ostreid herpesvirus 1. [less ▲]

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See detailOrder reduction in time integration caused by velocity projection
Arnold, Martin; Cardona, Alberto; Bruls, Olivier ULg

in Proceedings of the 3rd Joint International Conference on Multibody System Dynamics and the 7th Asian Conference on Multibody Dynamics (2014, July)

Holonomic constraints restrict the configuration of a multibody system to a subset of the configuration space. They imply so called hidden constraints at the level of velocity coordinates that may ... [more ▼]

Holonomic constraints restrict the configuration of a multibody system to a subset of the configuration space. They imply so called hidden constraints at the level of velocity coordinates that may formally be obtained from time derivatives of the original holonomic constraints. A numerical solution that satisfies hidden constraints as well as the original constraint equations may be obtained considering both types of constraints simultaneously in each time step (stabilized index-2 formulation) or using projection techniques. Both approaches are well established in the time integration of differential-algebraic equations. Recently, we have introduced a generalized- alpha Lie group time integration method for the stabilized index-2 formulation that achieves second order convergence for all solution components. In the present paper, we show that a separate velocity projection would be less favourable since it may result in an order reduction and in large transient errors after each projection step. This undesired numerical behaviour is analysed by a one-step error recursion that considers the coupled error propagation in differential and algebraic solution components. This one-step error recursion has been used before to prove second order convergence for the application of generalized-alpha methods to constrained systems. As a technical detail, we discuss the extension of these results from symmetric, positive definite mass matrices to the rank deficient case. [less ▲]

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See detailOrdered nanoporous membranes based on diblock copolymers with high chemical stability and tunable separation properties
Li, Xian-Feng; Fustin, Charles-André; Lefèvre, Nathalie ULg et al

in Journal of Materials Chemistry (2010), 20(21), 4333-4339

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See detailOrderly process of sequential cytokine stimulation is required for activation and maximal proliferation of primitive human bone marrow CD34+ hematopoietic progenitor cells residing in G0.
Ladd, A. C.; Pyatt, R.; GOTHOT, André ULg et al

in Blood (1997), 90(2), 658-68

Bone marrow (BM) CD34+ cells residing in the G0 phase of cell cycle may be the most suited candidates for the examination of cell cycle activation and proliferation of primitive hematopoietic progenitor ... [more ▼]

Bone marrow (BM) CD34+ cells residing in the G0 phase of cell cycle may be the most suited candidates for the examination of cell cycle activation and proliferation of primitive hematopoietic progenitor cells (HPCs). We designed a double simultaneous labeling technique using both DNA and RNA staining with Hoechst 33342 and Pyronin Y, respectively, to isolate CD34+ cells residing in G0(G0CD34+). Using long-term BM cultures and limiting dilution analysis, G0CD34+ cells were found to be enriched for primitive HPCs. In vitro proliferation of G0CD34+ cells in response to sequential cytokine stimulation was examined in a two-step assay. In the first step, cells received a primary stimulation consisting of either stem cell factor (SCF), Flt3-ligand (FL), interleukin-3 (IL-3), or IL-6 for 7 days. In the second step, cells from each group were washed and split into four or more groups, each of which was cultured again for another week with one of the four primary cytokines individually, or in combination. Tracking of progeny cells was accomplished by staining cells with PKH2 on day 0 and with PKH26 on day 7. Overall examination of proliferation patterns over 2 weeks showed that cells could progress into four phases of proliferation. Phase I contained cytokine nonresponsive cells that failed to proliferate. Phase II contained cells dividing up to three times within the first 7 days. Phases III and IV consisted of cells dividing up to five divisions and greater than six divisions, respectively, by the end of the 14-day period. Regardless of the cytokine used for primary stimulation, G0CD34+ cells moved only to phase II by day 7, whereas a substantial percentage of cells incubated with SCF or FL remained in phase I. Cells cultured in SCF or FL for the entire 14-day period did not progress beyond phase III but proliferated into phase IV (with <20% of cells remaining in phases I and II) if IL-3, but not IL-6, was substituted for either cytokine on day 7. G0CD34+ cells incubated with IL-3 for 14 days proliferated the most and progressed into phase IV; however, when SCF was substituted on day 7, cells failed to proliferate into phase IV. Most intriguing was a group of cells, many of which were CD34+, detected in cultures initially stimulated with IL-3, which remained as a distinct population, mostly in G0/G1, unable to progress out of phase II regardless of the nature of the second stimulus received on day 7. A small percentage of these cells expressed cyclin E, suggesting that their proliferation arrest may have been mediated by a cyclin-related disruption in cell cycle. These results suggest that a programmed response to sequential cytokine stimulation may be part of a control mechanism required for maintenance of proliferation of primitive HPCs and that unscheduled stimulation of CD34+ cells residing in G0 may result in disruption of cell-cycle regulation. [less ▲]

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See detailOrders in quaternion algebras
Pays, Isabelle ULg

Conference (1990, March)

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See detailL'ordinaire du contentieux administratif : Analyse du processus décisionnel au Conseil d'Etat belge francophone
Colemans, Julie ULg

Doctoral thesis (2014)

La thèse porte sur le processus décisionnel au Conseil d’Etat belge. Le raisonnement juridique pratique a été étudié à travers les activités concrètes que les auditeurs et conseillers accomplissent tout ... [more ▼]

La thèse porte sur le processus décisionnel au Conseil d’Etat belge. Le raisonnement juridique pratique a été étudié à travers les activités concrètes que les auditeurs et conseillers accomplissent tout au long du parcours du dossier. De cette manière, le raisonnement juridique n’est pas appréhendé comme une opération logique de la pensée mais comme un accomplissement pratique qui se déploient dans un horizon de sens partagé incarné par le concept de « raisonnable ». [less ▲]

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See detailOrdinal Rating of Network Performance and Inference by Matrix Completion
Du, Wei; Liao, Yongjun ULg; Geurts, Pierre ULg et al

Report (2012)

This paper addresses the large-scale acquisition of end-to-end network performance. We made two distinct contributions: ordinal rating of network performance and inference by matrix completion. The former ... [more ▼]

This paper addresses the large-scale acquisition of end-to-end network performance. We made two distinct contributions: ordinal rating of network performance and inference by matrix completion. The former reduces measurement costs and unifies various metrics which eases their processing in applications. The latter enables scalable and accurate inference with no requirement of structural information of the network nor geometric constraints. By combining both, the acquisition problem bears strong similarities to recommender systems. This paper investigates the applicability of various matrix factorization models used in recommender systems. We found that the simple regularized matrix factorization is not only practical but also produces accurate results that are beneficial for peer selection. [less ▲]

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See detailOrdinary Citizens' Experiences of Law as Process: The Case of Employment Discriminations in Belgium
Lejeune, Aude ULg; Orianne, Jean-François ULg

Conference (2011, June 04)

Through their different encounters with union, court, and government equality agency lawyers, workers report diverse understandings of her personal experience of injustice in the workplace. This paper ... [more ▼]

Through their different encounters with union, court, and government equality agency lawyers, workers report diverse understandings of her personal experience of injustice in the workplace. This paper examines workers’ experiences of discrimination and the role lawyers play in litigating these issues in Belgium. Bringing together the legal and rights consciousness studies and the sociology of mediation and tracking different stages in the construction of discrimination cases, from the moment when a future litigant describes an event as an injustice to the moment when the judge recognizes a discriminatory behavior (or conversely, dismisses a case), we suggest several possible empirical explanations of the way in which lawyers’ interpretation of a case directly affects workers’ rights consciousness. Because we refer to US socio-legal studies, this paper also calls into question how to import these studies to assist in analyzing legal mobilizations and legal consciousness in continental Europe. [less ▲]

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See detailL'ordinateur : outil de l'agriculteur ?
Claustriaux, Jean-Jacques ULg

Conference (1983, March 31)

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See detailL’ordinateur : outil, tiers ou écran ?
Vanmeerbeek, Marc ULg; Benrubi, Miguelle ULg; Froidcoeur, Xavier et al

in Santé Conjuguée (2012), 58

Les professionnels ont des perceptions variées de l’ordinateur qui trône sur leur bureau : « outil » parmi d’autres, « intrus » dans la relation, « tiers » créant une place nouvelle dans cette relation ... [more ▼]

Les professionnels ont des perceptions variées de l’ordinateur qui trône sur leur bureau : « outil » parmi d’autres, « intrus » dans la relation, « tiers » créant une place nouvelle dans cette relation. Propos de Marc Van Meerbeek, Miguelle Benrubi, Xavier Froidecoeur, Baudouin Denis, médecins en maison médicale. [less ▲]

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See detailL'ordinateur à l'école: Attitudes et besoins de formation chez les enseignants
Lafontaine, Dominique ULg

in Revue de la Direction Générale de l’Organisation des Etudes (1988), 23(6), 3-11

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See detailOrdinateur à la ferme : passé, présent, avenir
Claustriaux, Jean-Jacques ULg

in Barret, J.; Desjeux, D. (Eds.) L'informatique en quête d'utilisateurs (1992)

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See detailL'ordinateur au service de la gestion forestière : un cas pratique
Rondeux, Jacques ULg

in Bulletin de la Société Royale Forestière de Belgique = Tijdschrift van de Koninklijke Belgische Bosbouwmaatschappij (1974), 81(2), 117-134

On the basis of a forest data bank consisting in different files and having a great number of informations dealing with qualitative and quantitative stands descriptions, the computer is able to make up ... [more ▼]

On the basis of a forest data bank consisting in different files and having a great number of informations dealing with qualitative and quantitative stands descriptions, the computer is able to make up quicker various problems useful to the forest management (synthesis of informations per management units, repartition of forest areas per species, per age, simulation of cutting sections distribution, and so on). The informations are collected by permanent forest divisions. It is then possible to bring the recorded datas up to date and even the results of their treatment. Everything that we present in this paper can be realized at different levels of a forest organization and for several owners. The possibilities of this system can also be applied to other problems as inventories. [less ▲]

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See detailL’ordinateur dans la didactique des langues anciennes
Denooz, Joseph ULg

in Didactica Classica Gandensia (1971), (11), 83-84

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See detailOrdinateur et cosmos, par les rédacteurs des Editions Time-Life
Manfroid, Jean ULg

in Ciel et Terre (1989), 105

Not Available

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See detailL’ordinateur et l’apprentissage du latin
Denooz, Joseph ULg

in Bulletin de la Fédération des Professeurs de Grec et de Latin [=FPGL] (1986), 49

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See detailL'ordinateur et l'étude des grands troupeaux d'élevage
Claustriaux, Jean-Jacques ULg

in Annales de Gembloux (1978), 84

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See detailL’ordinateur et le latin, Techniques et méthodes
Denooz, Joseph ULg

in Revue de l'Organisation Internationale pour l'Etude des Langues Anciennes par Ordinateur (1978), (4), 1-36

Detailed reference viewed: 41 (13 ULg)