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Peer Reviewed
See detailOn the value of incorporating dominance effects in genetic evaluation of dairy cattle.
Druet, Tom ULg; Solkner, J.; Misztal, I. et al

in Proceedings of the 7th World Congress on Genetics Applied to LivestockProduction, Montpellier, France, August, 2002. Session 1 (2002)

Detailed reference viewed: 16 (2 ULg)
Peer Reviewed
See detailOn the Vedic Yajamâna-
Swennen, Philippe ULg

Conference (2014, January 07)

When he is consecrated, the Vedic Yajamâna symbolically becomes an embryo because he originally had the become a new Mârtânda in order to conquer the same divine status obtained by Vivasvant thanks to the ... [more ▼]

When he is consecrated, the Vedic Yajamâna symbolically becomes an embryo because he originally had the become a new Mârtânda in order to conquer the same divine status obtained by Vivasvant thanks to the realization of the first sacrifice. [less ▲]

Detailed reference viewed: 14 (1 ULg)
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See detailOn the Verification of Programs on Relaxed Memory Models
Linden, Alexander ULg

Doctoral thesis (2013)

Classical model-checking tools verify concurrent programs under the traditional "Sequential Consistency" (SC) memory model, in which all accesses to the shared memory are immediately visible globally, and ... [more ▼]

Classical model-checking tools verify concurrent programs under the traditional "Sequential Consistency" (SC) memory model, in which all accesses to the shared memory are immediately visible globally, and where model-checking consists in verifying a given property when exploring the state space of a program. However, modern multi-core processor architectures implement relaxed memory models, such as "Total Store Order" (TSO), "Partial Store Order" (PSO), or an extension with locks such as "x86-TSO", which allow stores to be delayed in various ways and thus introduce many more possible executions, and hence errors, than those present in SC. Of course, one can force a program executed in the context of a relaxed memory system to behave exactly as in SC by adding synchronization operations after every memory access. But this totally defeats the performance advantage that is precisely the motivation for implementing relaxed memory models instead of SC. Thus, when moving a program to an architecture implementing a relaxed memory model (which includes most current multi-core processors), it is essential to have tools to help the programmer check if correctness (e.g. a safety property) is preserved and, if not, to minimally introduce the necessary synchronization operations. The proposed verification approach uses an operational store-buffer-based semantics of the chosen relaxed memory models and proceeds by using finite automata for symbolically representing the possible contents of the buffers. Store, load, commit and other synchronization operations then correspond to operations on these finite automata. The advantage of this approach is that it operates on (potentially infinite) sets of buffer contents, rather than on individual buffer configurations, and that it is compatible with partial-order reduction techniques. This provides a way to tame the explosion of the number of possible buffer configurations, while preserving the full generality of the analysis. It is thus possible to even check designs that may contain cycles. This verification approach then serves as a basis to a memory fence insertion algorithm that finds how to preserve the correctness of a program when it is moved from SC to TSO or PSO. Its starting point is a program that is correct for the sequential consistency memory model (with respect to a given safety property), but that might be incorrect under TSO or PSO. This program is then analyzed for the chosen relaxed memory model and when errors are found (a violated safety property), memory fences are inserted in order to avoid these errors. The approach proceeds iteratively and heuristically, inserting memory fences until correctness is obtained, which is guaranteed to happen. [less ▲]

Detailed reference viewed: 81 (14 ULg)
See detailOn the way of understanding the adaptation to extreme pH of family 11 xylanases: Structural comparison and mutational analysis
De Lemos Esteves, Frédéric ULg; Ruelle, Virginie; Gouders, Thierry et al

Poster (2004, December)

Detailed reference viewed: 11 (2 ULg)
Peer Reviewed
See detailOn the way to a unified design approach for joints in structural systems
Jaspart, Jean-Pierre ULg

in Proceedings of the International Conference on Steel and Composite Structures (1999)

Detailed reference viewed: 6 (0 ULg)
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See detailOn the way to hybrid organizations? When worlds collide through collective entrepreneurship
Dufays, Frédéric ULg; Huybrechts, Benjamin ULg

Conference (2013, September 02)

This communication presents a model of collective entrepreneurship process, drawing on institutional theory (institutional logics) and on the sociology of social networks (structural hole). It argues that ... [more ▼]

This communication presents a model of collective entrepreneurship process, drawing on institutional theory (institutional logics) and on the sociology of social networks (structural hole). It argues that entrepreneurship might result from the association of bridge-builders, both in terms of structural hole bridging and in terms of institutional logics bridging. Individual as well as structural factors will influence the entrepreneurial outcome, in particular in the way the new organisation deals with the distinct logics. [less ▲]

Detailed reference viewed: 41 (3 ULg)
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See detailOn the way to the hybrid organization? When worlds collide through collective entrepreneurship
Dufays, Frédéric ULg; Huybrechts, Benjamin ULg

Conference (2013, July)

This communication presents a model of collective entrepreneurship process, drawing on institutional theory (institutional logics) and on the sociology of social networks (structural hole). It argues that ... [more ▼]

This communication presents a model of collective entrepreneurship process, drawing on institutional theory (institutional logics) and on the sociology of social networks (structural hole). It argues that entrepreneurship might result from the association of bridge-builders, both in terms of structural hole bridging and in terms of institutional logics bridging. Individual as well as structural factors will influence the entrepreneurial outcome, in particular in the way the new organisation deals with the distinct logics. [less ▲]

Detailed reference viewed: 54 (3 ULg)
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See detailOn transvaginal endoscopy for elucidating pathogenesis and treatment of ovarian endometria
Nisolle, Michelle ULg

in Gynecological Surgery (2014), 11(1),

Detailed reference viewed: 16 (5 ULg)
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See detailOn uncertainty measures used for decision tree induction
Wehenkel, Louis ULg

in Bouchon-Meunier, Bernadette (Ed.) Information Processing and Management of Uncertainty in Knowledge-Based Systems (1996)

This paper provides a further look at uncertainty or information criteria used in the context of deci- sion tree induction, and more generally of learn- ing conditional class probability models. We show ... [more ▼]

This paper provides a further look at uncertainty or information criteria used in the context of deci- sion tree induction, and more generally of learn- ing conditional class probability models. We show the high degree of similarity among two main families of criteria based respectively on the logarithmic SHANNON entropy function and the quadratic GINI index. We start by introduc- ing a general family of entropy functions and then discuss the latter particular cases, and end up with a short review of the Kolmogorov-Smirnov dis- tance,anotherrelatedmeasure. [less ▲]

Detailed reference viewed: 89 (3 ULg)
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See detailOn variation in gender agreement: the neutralization of pronominal gender in Dutch
De Vos, Lien ULg

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

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

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

Detailed reference viewed: 55 (6 ULg)
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See detailOn Vershikian and I-cosy random variables and filtrations
Laurent, Stéphane ULg

in Teoriya Veroyatnostei i ee Primeneniya (2010), 55

We prove that the equivalence between Vershik’s standardness criterion and the I-cosiness criterion for a filtration in discrete, negative time, holds separately for each random variable. This gives a ... [more ▼]

We prove that the equivalence between Vershik’s standardness criterion and the I-cosiness criterion for a filtration in discrete, negative time, holds separately for each random variable. This gives a strengthening and a more direct proof of the global equivalence between these two criteria. We also provide more elementary original propositions on Vershik’s standardness criterion, while emphasizing that similar statements for I-cosiness are sometimes not so obvious. [less ▲]

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See detailOn ways of being on the way: from complex preposition to aspect marker
Petré, Peter ULg; Davidse, Kristin

in International Journal of Corpus Linguistics (2012), 17(2),

This article presents a case study of a set of constructions involving the related way-nouns way, road, track and route, exemplified by (i) on the road to Morocco, (ii) (be) on way to an outstanding ... [more ▼]

This article presents a case study of a set of constructions involving the related way-nouns way, road, track and route, exemplified by (i) on the road to Morocco, (ii) (be) on way to an outstanding English summer with county side Surrey, (iii) (be) on the way to becoming Britain’s No 1 sprinter / on her way to see her boyfriend. These distinct constructions are the synchronically co-existing layers of processes of semantic generalization and grammaticalization, the most important stages of which can be parsed as follows: (i) preposition + complement (way-noun head + of + noun2/postmodifier); (ii) aspectual marker incorporating complex preposition with way-noun + nominal complement; (iii) aspectual marker incorporating complex preposition with way-noun + verbal complement. We will show that the decategorialization approach that has typically been applied to emergent complex prepositions, which are viewed as progressively losing their nominal features such as determiners, makes wrong predictions about degrees of grammaticalization in this case. For this reason, and also to arrive at a more elucidating analysis of the reanalysed layers, we will investigate in what ways their lexicogrammatical features express their constituent functions. We also argue that the emergent layer of aspectual marker + verbal predicate adds complex and fine-grained meanings to the paradigm of English aspectual markers (cf. Diewald 2010), thus enriching the aspectual system. Finally, we show on the basis of the qualitative and quantitative findings of our usage-based study that the variants of the ‘on the way’ expressions display an interesting case of specialization in relation to the four way-nouns. [less ▲]

Detailed reference viewed: 34 (5 ULg)
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See detailOn women’s bodies. Religion and female circumcision in Egypt
Mescoli, Elsa ULg

Conference (2013, April 10)

Among discourses about female circumcision, frequent are those which attribute it to religious beliefs, in particular Islamic ones. An ethnographic research conducted in Egypt, lead me to deconstruct such ... [more ▼]

Among discourses about female circumcision, frequent are those which attribute it to religious beliefs, in particular Islamic ones. An ethnographic research conducted in Egypt, lead me to deconstruct such simplistic association, in order to explore how we can (and if is it possible to) consider such a practice as a performing of religion on women’s bodies. In fact, in the context considered, first of all not only the Islamic religion is called into question, but also the Christian one; secondly, social dynamics are deeply intertwined with spiritual beliefs. In this framework, female circumcision has a precise role in the definition of the healthy sexuality of the couple and in the maintaining of the very same social order insofar it reflects a cosmic one. As a matter of fact, on the one hand religion is functional to legitimize a practice exerted upon women’s bodies which is perceived as essential to regulate social interactions, in the domestic context as well as in the public space. On the other hand, discourses and acts promoting and abandonment of female circumcision rely they themselves on religious precepts. These complex dynamics need to be deeply explored, in order to produce a wider knowledge about a controversial practice. The aim of my paper is to give voice to the literature on the subject and to the social actors involved in my ethnographic experience, among which several women themselves, so as to highlight in which ways religion (Islamic and Christian ones) and the practice of female circumcision are connected. [less ▲]

Detailed reference viewed: 28 (3 ULg)
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See detailOn-axis spatially resolved spectroscopy of low redshift quasar host galaxies: HE 1503+0228, at z=0.135
Courbin, F.; Letawe, Géraldine ULg; Magain, Pierre ULg et al

in Astronomy and Astrophysics (2002), 394

We present the first result of a comprehensive spectroscopic study of quasar host galaxies. On-axis, spatially resolved spectra of low redshift quasars have been obtained with FORS1, mounted on the 8.2 m ... [more ▼]

We present the first result of a comprehensive spectroscopic study of quasar host galaxies. On-axis, spatially resolved spectra of low redshift quasars have been obtained with FORS1, mounted on the 8.2 m ESO Very Large Telescope, Antu. The spectra are spatially deconvolved using a spectroscopic version of the ``MCS deconvolution algorithm''. The algorithm decomposes two dimensional spectra into the individual spectra of the central point-like nucleus and of its host galaxy. Applied to HE 1503+0228 at z=0.135 (M[SUB]B[/SUB]=-23.0), it provides us with the spectrum of the host galaxy between 3600 Å and 8500 Å (rest-frame), at a mean resolving power of 700. The data allow us to measure several of the important Lick indices. The stellar populations and gas ionization state of the host galaxy of HE 1503+0228 are very similar to the ones measured for normal non-AGN galaxies. Dynamical information is also available for the gas and stellar components of the galaxy. Using deconvolution and a deprojection algorithm, velocity curves are derived for emission lines, from the center up to 4\arcsec away from the nucleus of the galaxy. Fitting a simple three-components mass model (point mass, spherical halo of dark matter, disk) to the position-velocity diagram, we infer a mass of M(r<1 kpc) = (2.0 +/- 0.3)x 10[SUP]10[/SUP] M[SUB]sun[/SUB] within the central kiloparsec of the galaxy, and a mass integrated over 10 kpc of M(r<10 kpc) = (1.9 +/- 0.3) x 10[SUP]11[/SUP] M[SUB]sun[/SUB], with an additional 10% error due to the uncertainty on the inclination of the galaxy. This, in combination with the analysis of the stellar populations indicates that the host galaxy of HE 1503+0228, is a normal spiral galaxy. Based on observations made with ANTU/UT1 at ESO-Paranal observatory in Chile (program 65.P-0361(A)), and with the ESO 3.5 m NTT, at La Silla observatory (program 62.P-0643(B)). [less ▲]

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See detailOn-axis spectroscopy of the host galaxies of 20 optically luminous quasars at z similar to 0.3
Letawe, Géraldine ULg; Magain, Pierre ULg; Courbin, F. et al

in Monthly Notices of the Royal Astronomical Society (2007), 378(1), 83-108

We present the analysis of a sample of 20 bright low-redshift quasars (M-B < -23 and z < 0.35) observed spectroscopically with the Very Large Telescope (VLT). The Focal Reducer/low dispersion Spectrograph ... [more ▼]

We present the analysis of a sample of 20 bright low-redshift quasars (M-B < -23 and z < 0.35) observed spectroscopically with the Very Large Telescope (VLT). The Focal Reducer/low dispersion Spectrograph (FORS1) spectra, obtained in Multi-Object Spectroscopy (MOS) mode, allow to observe simultaneously the quasars and several reference stars used to spatially deconvolve the data. Applying the Magain, Courbin, & Sohy (MCS) deconvolution method, we are able to separate the individual spectra of the quasar and of the underlying host galaxy. Contrary to some previous claims, we find that luminous quasars are not exclusively hosted by massive ellipticals. Most quasar host galaxies harbour large amounts of gas, irrespective of their morphological type. Moreover, the stellar content of half of the hosts is a young Sc-like population, associated with a rather low-metallicity interstellar medium. A significant fraction of the galaxies contain gas ionized at large distances by the quasar radiation. This large distance ionization is always associated with signs of gravitational interactions (as detected from images or disturbed rotation curves). The spectra of the quasars themselves provide evidence that gravitational interactions bring dust and gas in the immediate surrounding of the super massive black hole, allowing to feed it. The quasar activity might thus be triggered (1) in young gas-rich spiral galaxies by local events and (2) in more evolved galaxies by gravitational interactions or collisions. The latter mechanism gives rises to the most powerful quasars. Finally, we derive mass models for the isolated spiral host galaxies and we show that the most reliable estimators of the systemic redshift in the quasar spectrum are the tips of the Hα and Hβ lines. [less ▲]

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See detailOn-axis spectroscopy of the z =0.144 radio-loud quasar HE 1434-1600: an elliptical host with a highly ionized ISM
Letawe, Géraldine ULg; Courbin, F.; Magain, Pierre ULg et al

in Astronomy and Astrophysics (2004), 424

VLT on-axis optical spectroscopy of the z=0.144 radio-loud quasar HE 1434-1600 is presented. The spatially resolved spectra of the host galaxy are deconvolved and separated from those of the central ... [more ▼]

VLT on-axis optical spectroscopy of the z=0.144 radio-loud quasar HE 1434-1600 is presented. The spatially resolved spectra of the host galaxy are deconvolved and separated from those of the central quasar in order to study the dynamics of the stars and gas as well as the physical conditions of the ISM. We find that the host of HE 1434-1600 is an elliptical galaxy that resides in a group of at least 5 member galaxies, and that most likely experienced a recent collision with its nearest companion. Compared with other quasar host galaxies, HE 1434-1600 has a highly ionized ISM. The ionization state corresponds to that of typical Seyferts, but the ionized regions are not distributed in a homogeneous way around the QSO, and are located preferentially several kiloparsecs away from it. While the stellar absorption lines do not show any significant velocity field, the gas emission lines do. The observed gas velocity field is hard to reconcile with dynamical models involving rotating disk, modified Hubble laws or power laws, that all require extreme central masses (M>10[SUP]9[/SUP] M[SUB]o[/SUB]) to provide only poor fit to the data. Power law models, which best fit the data, provide a total mass of M(<10 kpc) = 9.2 × 10[SUP]10[/SUP] M[SUB]o[/SUB]. We conclude that the recent interaction between HE 1434-1600 and its closest companion has strongly affected the gas velocity and ionization state, from the center of the galaxy to its most external parts. Based on observations made with the ESO Very Large Telescope ANTU/UT1 at ESO-Paranal observatory, Chile (program 65.P-0361(A)). [less ▲]

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See detailOn-axis VLT spectroscopy of quasar host galaxies: HE 1503+0228, at z=0.135
Courbin, F.; Letawe, Géraldine ULg; Magain, Pierre ULg et al

in Active Galactic Nuclei: From Central Engine to Host Galaxy (2003)

Not Available

Detailed reference viewed: 8 (0 ULg)