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See detailGeneral report - Session on connections
Jaspart, Jean-Pierre ULg

in Journal of Constructional Steel Research (2000), 55

As a result of a world-wide intensive research activity, a new design concept for structural moment resistant joints has been suggested and implemented in design codes. In the present paper, its ... [more ▼]

As a result of a world-wide intensive research activity, a new design concept for structural moment resistant joints has been suggested and implemented in design codes. In the present paper, its background is first briefly described and the main contributions to its development are presented. As a matter of fact, because of the high number of past and ongoing researches, reports and papers devoted to this topic, an exhaustive list of all these works could not be established in a limited number of pages. The possibilities of extension of the new design concepts, which have been first developed for steel beam-to-column joints under static loading, are particularly pointed out. This aspect appears quite important as in the near future it should provide designers with a unified design approach for structural joints whatever their loading, their configurations and the nature of their constitutive material(s). [less ▲]

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See detailA general review and description of the poultry production in Vietnam
Stéphanie Desvaux; Vu Dinh Ton; Phan Dang, Thang ULg et al

in Stéphanie Desvaux; Vu Dinh Ton (Eds.) A general review and description of the poultry production in Vietnam (2008)

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See detailGeneral summer circulation in the Northern Bering Sea.
Djenidi, Salim ULg; Deleersnijder, Eric; Nihoul, Jacques ULg

in EOS : Transactions, American Geophysical Union (1987), 68(50), 1719

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See detailA general theory of dual error bounds by finite elements
Debongnie, Jean-François ULg

Report (1983)

This paper presents a general error bound theory for linear elliptic problems, which constitutes an extension of particular results obtained earlier by B. Fraeijs de Veubeke

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See detailGeneral two-order-parameter Ginzburg-Landau model with quadratic and quartic interactions
Ivanov, Igor ULg

in Physical Review. E : Statistical, Nonlinear, and Soft Matter Physics (2009), 79

The Ginzburg-Landau model with two-order parameters appears in many condensed-matter problems. However, even for scalar order parameters, the most general U(1)-symmetric Landau potential with all ... [more ▼]

The Ginzburg-Landau model with two-order parameters appears in many condensed-matter problems. However, even for scalar order parameters, the most general U(1)-symmetric Landau potential with all quadratic and quartic terms contains 13 independent coefficients and cannot be minimized with straightforward algebra. Here, we develop a geometric approach that circumvents this computational difficulty and allows one to study properties of the model without knowing the exact position of the minimum. In particular, we find the number of minima of the potential, classify explicit symmetries possible in this model, establish conditions when and how these symmetries are spontaneously broken, and explicitly describe the phase diagram. [less ▲]

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See detailA General view of the diagnosis and pharmacological treatment of odontogenic pain
Chavarria Bolanos, Daniel ULg

Scientific conference (2012, November 26)

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See detailGeneral X-ray properties of hot, massive stars
Nazé, Yaël ULg

in Bulletin de la Societe Royale des Sciences de Liege (2011), 80

The recent X-ray observatories have not yet provided a large survey comparable (in sky coverage) to that based upon the ROSAT All-Sky Survey (RASS). However, two limited surveys exist : the 2XMM catalog ... [more ▼]

The recent X-ray observatories have not yet provided a large survey comparable (in sky coverage) to that based upon the ROSAT All-Sky Survey (RASS). However, two limited surveys exist : the 2XMM catalog for XMM-Newton (294 OB stars detected) and the Carina large-scale survey from Chandra (129 OB stars detected). Medium-resolution (CCD) spectra were analyzed and led to new results on the relationship between the X-ray luminosity and the bolometric luminosity, as well as on the typical properties (plasma temperature, variability) of these objects. This contribution thus presents the results of the first high-sensitivity investigation of the overall high-energy properties of a sizeable sample of hot stars. [less ▲]

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See detailGénéralisation de l'apprentissage d'une langue moderne à l'école primaire ; première analyse de la situation
Straeten, M.; Blondin, Christiane ULg

in Point sur la Recherche en Education (Le) (2001), 19

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See detailGénéralisation Min Max pour l'Apprentissage par Renforcement Batch et Déterministe : Relaxations pour le Cas Général T Etapes
Fonteneau, Raphaël ULg; Ernst, Damien ULg; Boigelot, Bernard ULg et al

in 8èmes Journées Francophones de Planification, Décision et Apprentissage pour la conduite de systèmes (JFPDA'13) (2013)

Cet article aborde le problème de généralisation minmax dans le cadre de l'apprentissage par renforcement batch et déterministe. Le problème a été originellement introduit par [Fonteneau, 2011], et il a ... [more ▼]

Cet article aborde le problème de généralisation minmax dans le cadre de l'apprentissage par renforcement batch et déterministe. Le problème a été originellement introduit par [Fonteneau, 2011], et il a déjà été montré qu'il est NP-dur. Deux schémas de relaxation pour le cas deux étapes ont été présentés aux JFPDA'12, et ce papier présente une généralisation de ces schémas au cas T étapes. Le premier schéma fonctionne en éliminant des contraintes afin d'obtenir un problème soluble en temps polynomial. Le deuxième schéma est une relaxation lagrangienne conduisant également à un problème soluble en temps polynomial. On montre théoriquement que ces deux schémas permettent d'obtenir de meilleurs résultats que ceux proposés par [Fonteneau, 2011]. [less ▲]

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See detailGénéralisation min max pour l'apprentissage par renforcement batch et déterministe : schémas de relaxation
Fonteneau, Raphaël ULg; Ernst, Damien ULg; Boigelot, Bernard ULg et al

in Septièmes Journées Francophones de Planification, Décision et Apprentissage pour la conduite de systèmes (JFPDA 2012) (2012, May)

On s’intéresse au problème de généralisation min max dans le cadre de l’apprentissage par renforcement batch et déterministe. Le problème a été originellement introduit par Fonteneau et al. (2011). Dans ... [more ▼]

On s’intéresse au problème de généralisation min max dans le cadre de l’apprentissage par renforcement batch et déterministe. Le problème a été originellement introduit par Fonteneau et al. (2011). Dans un premier temps, on montre que le problème est NP-dur. Dans le cas où l’horizon d’optimisation vaut 2, on développe deux schémas de relaxation. Le premier schéma fonctionne en éliminant des contraintes de telle sorte qu’on obtienne un problème soluble en temps polynomial. Le deuxième schéma est une relaxation Lagrangienne conduisant à un problème conique-quadratique. On montre théoriquement et empiriquement que ces deux schémas permettent d’obtenir de meilleurs résultats que ceux proposés par Fonteneau et al. (2011). [less ▲]

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See detailThe generalist pollination system and reproductive success of Calluna vulgaris
Mahy, Grégory ULg; De Sloover, Jacques; Jacquemart, Anne Laure

in Canadian Journal of Botany (1999), 76

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See detailGeneralist vs specialist ? That's the question
Hanzen, Christian ULg

Conference given outside the academic context (2003)

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See detailLes généralistes : De bons acteurs en prévention ? Analyse d’une échelle d’attitude
Vanmeerbeek, Marc ULg

Conference (2010, June 24)

La prévention est le parent pauvre de la médecine : dispersion des acteurs entre agences spécialisées et soignants de terrain, entre niveaux de pouvoir, faibles moyens financiers et faibles résultats ... [more ▼]

La prévention est le parent pauvre de la médecine : dispersion des acteurs entre agences spécialisées et soignants de terrain, entre niveaux de pouvoir, faibles moyens financiers et faibles résultats objectivés. Les généralistes sont ils des acteurs incontournables ? Entre la prévention opportuniste durant leurs consultations et les grandes campagnes de santé publique, ont-ils envie de créer une troisième voie : opérateurs autonomes organisés pour leur patientèle et relais efficaces d’actions collectives ? L’avis d’un échantillon de généralistes belges francophones est étudié par une échelle d’attitude. Quarante indicateurs situent les répondants sur trois axes principaux et deux axes secondaires : 1. Des soins à la santé La globalité de la santé est-elle abordée aussi systématiquement en prévention que dans le domaine curatif où la plainte du patient sert de déclencheur ? 2. De l’individuel au collectif, face aux patients Les généralistes se sentent-ils responsables de la communauté de leurs patients, prise comme un ensemble ? Sont-ils prêts à intégrer de nouvelles compétences dans les domaines de la gestion des données générées par l’activité clinique ? • Axe secondaire : l’évaluation de pratique Les généralistes trouvent-ils de la satisfaction dans leur métier avec des méthodes de travail et des indicateurs provenant du monde de la santé publique ? 3. De l’individuel au collectif, face aux autres acteurs en santé Les généralistes manquent de temps. Sont ils prêts à déléguer à des tâches à des paramédicaux ou du personnel administratif, à collaborer avec des acteurs en promotion de la santé ? • Axe secondaire : les généralistes face à l’organisation de la santé publique Les généralistes voient-ils dans les structures de santé publique des partenaires fiables ? [less ▲]

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See detailGeneralization of automatic sequences for numeration systems on a regular language
Rigo, Michel ULg

in Theoretical Computer Science (2000), 244

Let L be an infinite regular language on a totally ordered alphabet (Σ,<). Feeding a finite deterministic automaton (with output) with the words of L, enumerated lexicographically with respect to <, leads ... [more ▼]

Let L be an infinite regular language on a totally ordered alphabet (Σ,<). Feeding a finite deterministic automaton (with output) with the words of L, enumerated lexicographically with respect to <, leads to an infinite sequence over the output alphabet of the automaton. This process generalizes the concept of k-automatic sequence for abstract numeration systems on a regular language (instead of systems in base k). Here, we study the first properties of these sequences and their relations with numeration systems. [less ▲]

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See detailA Generalization of Cobham's Theorem to Automata over Real Numbers
Boigelot, Bernard ULg; Brusten, Julien ULg

in Lecture Notes in Computer Science (2007, July), 4596

This paper studies the expressive power of finite-state automata recognizing sets of real numbers encoded positionally. It is known that the sets that are definable in the first-order additive theory of ... [more ▼]

This paper studies the expressive power of finite-state automata recognizing sets of real numbers encoded positionally. It is known that the sets that are definable in the first-order additive theory of real and integer variables (R, Z, +, <) can all be recognized by weak deterministic Büchi automata, regardless of the encoding base r > 1. In this paper, we prove the reciprocal property, i.e., that a subset of R that is recognizable by weak deterministic automata in every base r > 1 is necessarily definable in (R, Z, +, <). This result generalizes to real numbers the well-known Cobham's theorem on the finite-state recognizability of sets of integers. Our proof gives interesting insight into the internal structure of automata recognizing sets of real numbers, which may lead to efficient data structures for handling these sets. [less ▲]

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See detailA generalization of Cobham's theorem to automata over real numbers
Boigelot, Bernard ULg; Brusten, Julien ULg

in Theoretical Computer Science (2009), 410(18), 1694-1703

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See detailA Generalization of Semenov's Theorem to Automata over Real Numbers
Boigelot, Bernard ULg; Brusten, Julien ULg; Leroux, Jérôme

in Lecture Notes in Artificial Intelligence (2009), 5663

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See detailGeneralized (m, k)-Zipf law for fractional Brownian motion-like time series with or without effect of an additional linear trend
Bronlet, Philippe ULg; Ausloos, Marcel ULg

in International Journal of Modern Physics C (2003), 14(3), 351-365

We have translated fractional Brownian motion (FBM) signals into a text based on two "letters", as if the signal fluctuations correspond to a constant stepsize random walk. We have applied the Zipf method ... [more ▼]

We have translated fractional Brownian motion (FBM) signals into a text based on two "letters", as if the signal fluctuations correspond to a constant stepsize random walk. We have applied the Zipf method to extract the zeta' exponent relating the word frequency and its rank on a log-log plot. We have studied the variation of the Zipf exponent(s) giving the relationship between the frequency of occurrence of words of length m < 8 made of such two letters: zeta' is varying as a power law in terms of m. We have also searched how the zeta' exponent of the Zipf law is influenced by a linear trend and the resulting effect of its slope. We can distinguish finite size effects, and results depending whether the starting FBM is persistent or not, i.e., depending on the FBM Hurst exponent H. It seems then numerically proven that the Zipf exponent of a persistent signal is more influenced by the trend than that of an antipersistent signal. It appears that the conjectured law zeta' = \2H - 1\ only holds near H = 0.5. We have also introduced considerations based on the notion of a time dependent Zipf law along the signal. [less ▲]

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