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See detailUnsteady lifting line theory using the Wagner function
Boutet, Johan ULg; Dimitriadis, Grigorios ULg

in Proceedings of the 55th AIAA Aerospace Sciences Meeting (2017, January)

A method is presented to model the incompressible, attached, unsteady lift and moment acting on a thin three-dimensional wing in the time domain. The model is based on the combination of Wagner theory and ... [more ▼]

A method is presented to model the incompressible, attached, unsteady lift and moment acting on a thin three-dimensional wing in the time domain. The model is based on the combination of Wagner theory and lifting line theory trough the unsteady Kutta-Joukowsky theorem. The result is a set of closed form linear ordinary di erential equations that can be solved analytically or using a Runge-Kutta-Fehlberg algorithm. The method is validated against numerical predictions from an unsteady Vortex Lattice method for rectangular and tapered wings undergoing step or oscillatory changes in plunge or pitch. As the aerodynamic loads are written in state space form in the proposed method, they can be easily included in aeroelastic and flight dynamic calculations. [less ▲]

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See detailCompte rendu: AXEMAN's JAZZ et DEAD MAN'S BLUES ( Ray Celestin)
Sacré, Robert ULg

in ABS Magazine (2017), (53),

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See detailCompte-rendu de l'ouvrage de Robert Ford et Bob McGrath : ZYDECO DISCOGRAPHY 1949-2010
Sacré, Robert ULg

in ABS Magazine (2017), (53),

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See detailReversible TAD chemistry as a convenient tool for the design of (re)processable PCL-based shape-memory materials
Defize, Thomas ULg; Riva, Raphaël ULg; Thomassin, Jean-Michel ULg et al

in Macromolecular Rapid Communications (2017), 38(1), 1600517

A chemically cross-linked but remarkably (re)processable shape-memory polymer (SMP) is designed by cross-linking poly(ε -caprolactone) (PCL) stars via the efficient triazolinedione click chemistry, based ... [more ▼]

A chemically cross-linked but remarkably (re)processable shape-memory polymer (SMP) is designed by cross-linking poly(ε -caprolactone) (PCL) stars via the efficient triazolinedione click chemistry, based on the very fast and reversible Alder– ene reaction of 1,2,4-triazoline-3,5-dione (TAD) with indole compounds. Typically, a six-arm star-shaped PCL function- alized by indole moieties at the chain ends is melt-blended with a bisfunctional TAD, directly resulting in a cross-linked PCL-based SMP without the need of post-curing treatment. As demonstrated by the stress relaxation measurement, the labile character of the TAD–indole adducts under stress allows for the solid-state plasticity reprocessing of the permanent shape at will by compression molding of the raw cross-linked material, while keeping excellent shape-memory properties. [less ▲]

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See detailMARTIAN ULTRAVIOLET AURORA: RESULTS OF MODEL SIMULATIONS
Gérard, Jean-Claude ULg; Soret, Lauriane ULg; Shematovich, V.I. et al

Conference (2017, January)

We present recent modeling results based on observations performed with the UV spectrographs on board the Mars Express and MAVEN missions.Two types of aurora are discussed: the localized and transient ... [more ▼]

We present recent modeling results based on observations performed with the UV spectrographs on board the Mars Express and MAVEN missions.Two types of aurora are discussed: the localized and transient discrete aurora and the more stable diffuse aurora observed during periods of active solar periods. [less ▲]

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See detailQuartz-enhanced photo-acoustic spectroscopy for breath analyses
Petersen, J; Lamard, L; Feng, P et al

in Proceedings SPIE (2017, January), 10055

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See detailBelgian National Committee for Theoretical and Applied Mechanics
Ponthot, Jean-Philippe ULg

Article for general public (2017)

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See detailThe road from the adenoma valley through the forest of genetic testing in pituitary adenoma
Beckers, Albert ULg

Scientific conference (2017, January)

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See detailAs teorias semióticas diante da fotografia
Dondero, Maria Giulia ULg

in Rodrigues, Angelica; Rocha, Nildicéia (Eds.) Proceedings VI SELIN – The Unesp Linguistics Studies Seminar (2017, January)

Dans ce texte, je me propose de revenir sur les travaux en sémiotique qui ont marqué les études du champ interdisciplinaire de la photographie et de les poursuivre; l’objectif principal est de fournir ... [more ▼]

Dans ce texte, je me propose de revenir sur les travaux en sémiotique qui ont marqué les études du champ interdisciplinaire de la photographie et de les poursuivre; l’objectif principal est de fournir quelques pistes pour étudier, d’un point de vue sémiotique, l’image photographique en tant qu’objet pris dans des pratiques d’usage et d’interprétation diversifiées au sein des statuts sociaux de l’art, de la science, de la religion. [less ▲]

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See detailDu bon usage des faits en régime de " post­-vérité"
Thoreau, François ULg; Zimmer, Alexis

Article for general public (2017)

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See detailPost-embryonic development of sheepshead minnow Cyprinodon variegatus: a staging tool based on externally visible anatomical traits
Schnitzler, Joseph ULg; Dussenne, Mélanie ULg; Frederich, Bruno ULg et al

in Ichthyological Research (2017), 64

The sheepshead minnow Cyprinodon variegatus has become a favoured model for laboratory studies because of their small size, rapid development, and tolerance of laboratory conditions. Here, we analyse ... [more ▼]

The sheepshead minnow Cyprinodon variegatus has become a favoured model for laboratory studies because of their small size, rapid development, and tolerance of laboratory conditions. Here, we analyse sheepshead minnow post-embryonic development with the goal of providing a generally useful method for staging fish after embryogenesis. Groups of three females and two males were placed in breeding chambers designed for this experiment. More than 100 eggs were collected and maintained in seawater. Embryos were selected under a dissection microscope and placed in incubation dishes (50 per dish) at 26 °C. On day six, embryos hatched and larvae were transferred to 1 L beakers. To define a simplified normalization table for sheepshead minnow development, we measured each fish for its standard length and examined the fish for four externally evident traits: pigmentation pattern, caudal fin morphology, anal fin morphology, and dorsal fin morphology. The four traits were chosen, because they are easily visualized with standard laboratory equipment such as the stereomicroscope and camera. We have provided criteria for staging sheepshead minnows in studies of post-embryonic development. Our data suggest that dorsal and anal fin morphology may serve as a useful phenotype for defining metamorphic climax stages throughout post-embryonic development in C. variegatus. The staging systems we propose should facilitate detailed anatomical and developmental analyses in relation to ecotoxicological studies on potential disruption of the thyroid axis by xenobiotics and endocrine-disrupting compounds. [less ▲]

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See detailHabitat selection by marine larvae in changing chemical environments
Lecchini, David; Dixson, Danielle L.; Lecellier, Gael et al

in Marine Pollution Bulletin (2017), 114

The replenishment and persistence of marine species is contingent on dispersing larvae locating suitable habitat and surviving to a reproductive stage. Pelagic larvae rely on environmental cues to make ... [more ▼]

The replenishment and persistence of marine species is contingent on dispersing larvae locating suitable habitat and surviving to a reproductive stage. Pelagic larvae rely on environmental cues to make behavioural decisions with chemical information being important for habitat selection at settlement. We explored the sensory world of crustaceans and fishes focusing on the impact anthropogenic alterations (ocean acidification, red soil, pesticide) have on conspecific chemical signals used by larvae for habitat selection. Crustacean (Stenopus hispidus) and fish (Chromis viridis) larvae recognized their conspecifics via chemical signals under control conditions. In the presence of acidified water, red soil or pesticide, the ability of larvae to chemically recognize conspecific cues was altered. Our study highlights that recruitment potential on coral reefs may decrease due to anthropogenic stressors. If so, populations of fishes and crustaceans will continue their rapid decline; larval recruitment will not replace and sustain the adult populations on degraded reefs. [less ▲]

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See detailH.M. Enzensberger contre l'amertume du vieillard. Des "groupes vidéos" à Youtube (et retour).
Hamers, Jérémy ULg

in Cahier Louis-Lumière (2017), 10

By interrelating several texts on the editing and juxtaposition of heterogeneous images by the German essayist and media theorist Hans Magnus Enzensberger, this article brings up to date an aesthetic link ... [more ▼]

By interrelating several texts on the editing and juxtaposition of heterogeneous images by the German essayist and media theorist Hans Magnus Enzensberger, this article brings up to date an aesthetic link between various past and contemporary media devices. The identification of this link makes it possible to free theoretical critique of the evolutionary paradigm of failure and progress (technological and political), opening it up to a set of reciprocal and non-linear insights. In this context, the use of Enzensberger texts also goes beyond any form of periodisation. By engaging a dialogue with his “Jeu de construction pour une théorie des medias” / Constituents of a Theory of the Media (1970), several essays gathered in Médiocrité et folie / Mediocrity and Madness (1988), as well as his recent autobiographical interview Erinnerungen an einen Tumult (2014), this text shows how criticism by the German writer, while constantly revitalised by the emergence of “new” objects (tabloid press, mobile video, television, Internet, smartphones), invites us to overcome any technological determinism to simultaneously consider the political potential of the first activist video groups and platforms dominating the Internet today. [less ▲]

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See detailCapitales européennes de la Culture : enjeux, dynamiques et héritages
Brahy, Rachel ULg; Dumont, Elisabeth

Article for general public (2017)

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See detailSoulèvements. Poétique et politique, une rencontre (presque) impossible
Hagelstein, Maud ULg

Article for general public (2017)

Qu’est-ce qui nous soulève ? L’exposition présentée au Jeu de Paume par Didi-Huberman répond à cette question en cinq temps, formant les chapitres d’une histoire de la révolte racontée par les moyens ... [more ▼]

Qu’est-ce qui nous soulève ? L’exposition présentée au Jeu de Paume par Didi-Huberman répond à cette question en cinq temps, formant les chapitres d’une histoire de la révolte racontée par les moyens d’une anthropologie politique des images. Comment se soulever, donc ? 1. Par éléments (déchaînés) – 2. Par gestes (intenses) – 3. Par mots (exclamés) – 4. Par conflits (embrasés) – 5. Par désirs (indestructibles). Finement orchestré et rassemblant des matériaux visuels aussi hétérogènes que singuliers, le dispositif met en place un vaste système d’échos où s’aventure le spectateur. Les éléments exposés ouvrent des brèches dans nos savoirs, se compliquent les uns les autres, se démentent et se répondent, parfois avec évidence, parfois plus confidentiellement. Des séries se créent au départ des objets exposés, sans doute différentes pour chacun, séries sur lesquelles viennent se greffer les trouvailles du commissaire au fur et à mesure du trajet dans l’exposition. [less ▲]

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See detail« Un enfant de 5 ans pourrait le faire ». Cy Twombly ou la liberté reconquise.
Hagelstein, Maud ULg

Article for general public (2017)

De nombreux observateurs ont décrit chez Twombly cette réconciliation picturale de l’adulte avec la vitalité ou la liberté enfantine, tout en marquant – bien entendu – la non-coïncidence de ses œuvres ... [more ▼]

De nombreux observateurs ont décrit chez Twombly cette réconciliation picturale de l’adulte avec la vitalité ou la liberté enfantine, tout en marquant – bien entendu – la non-coïncidence de ses œuvres avec les productions des enfants. Malgré sa sensibilité aux compositions gauches, sales, « tripotées », « déjetées » de l’artiste américain, Roland Barthes voyait chez Twombly une « paresse » (et donc une « élégance extrême ») sans commune mesure avec le caractère appliqué (on tire la langue) et appuyé du dessin d’enfant. D’autres ont pu invoquer l’intention artistique, non manifeste ou moins construite chez l’enfant. Dans son texte sur « Le corps parlant de Cy Twombly » (cf. catalogue de l’exposition), Richard Leeman rappelle que l’artiste avait apporté une réponse à ce problème, indiquant que « sa ligne est enfantine (childlike), mais pas puérile (childish) ». Twombly disait encore à ce propos : « C’est très difficile à imiter : pour avoir cette qualité, il faut se projeter soi-même dans la ligne de l’enfant, cela doit se ressentir ». Dessiner comme un enfant de 5 ans, ce n’est pas à la portée de tout le monde. Un enfant de cinq ans pourrait le faire, oui, sans doute, il pourrait en tout cas profiter encore de cette liberté que Twombly a tellement bien su convertir, mais un adulte non-artiste ne le pourrait pas. [less ▲]

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See detailSomatic mosaicism is implicated in the etiology of XLAG syndrome
Rostomyan, Liliya ULg; Daly, Adrian ULg; Yuan, Bo et al

in Abstract book : Symposium "Perspectives in Endocrinology" (2017, January)

Detailed reference viewed: 21 (2 ULg)