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See detailOn the identification of paedomorphic and overwintering larval newts based on cloacal shape: review and guidelines
Denoël, Mathieu ULg

in Current Zoology (in press)

Paedomorphosis is an alternative process to metamorphosis in which adults retain larval traits at the adult stage. It is frequent in newts and salamanders, where larvae reach sexual maturity without ... [more ▼]

Paedomorphosis is an alternative process to metamorphosis in which adults retain larval traits at the adult stage. It is frequent in newts and salamanders, where larvae reach sexual maturity without losing their gills. However, in some populations, larvae overwinter in water, while remaining immature. These alternative ontogenetic processes are of particular interest in various research fields, but have different causes and consequences, as only paedomorphosis allows metamorphosis to be bypassed before maturity. It is thus relevant to efficiently identify paedomorphs versus overwintering larvae. In this context, the aim of this paper was threefold: firstly, to perform a meta-analysis of the identification procedures carried out in the literature; secondly, to determine the effectiveness of body size to make inferences about adulthood by surveying natural newt populations of Lissotriton helveticus and Ichthyosaura alpestris, and thirdly, to propose easy guidelines for an accurate distinction between large larvae and paedomorphs based on an external sexual trait, which is essential for reproduction — the cloaca. More than half of the studies in the literature do not mention the diagnostic criteria used for determining adulthood. The criteria mentioned were the presence of mature gonads (10%), eggs laid (4%), courtship behaviour (10%), and external morphological sexual traits (39%) including the cloaca (24%). Body-size thresholds should not be used as a proxy for paedomorphosis, because overwintering larvae can reach a larger size than paedomorphs within the same populations. In contrast, diagnosis based on cloacal external morphology is recommended, as it can be processed by the rapid visual assessment of all caught specimens, thus providing straightforward data at the individual level for both sexes. [less ▲]

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See detailHistoire de l'édition en Belgique (XVe-XXIe siècle)
Durand, Pascal ULg; Habrand, Tanguy ULg

Book published by Les Impressions Nouvelles (in press)

Extrait du Préambule : « S’il n’est pas envisageable de dresser un répertoire complet de l’ensemble des imprimeurs, libraires et éditeurs en activité du XVe siècle à nos jours dans les territoires ... [more ▼]

Extrait du Préambule : « S’il n’est pas envisageable de dresser un répertoire complet de l’ensemble des imprimeurs, libraires et éditeurs en activité du XVe siècle à nos jours dans les territoires recouverts actuellement par la Communauté française de Belgique , les lignes de faîte qui seront profilées à travers l’histoire de l’édition dans ces territoires représenteront autant de lignes de force susceptibles de mettre en relief les logiques ayant régi, à la fois dans la durée et en chaque état du marché éditorial, les structures de ce marché, leur maintien ou leur évolution, ainsi que leurs rapports à différents horizons. Ce à quoi l’ouvrage renonce en fait d’idéal d’exhaustivité se trouvera ainsi regagné, en quelque sorte, en fait de construction réaliste de l’objet, sous un double point de vue historique et sociologique voulant que les transformations morphologiques du domaine étudié, de même que l’inertie ou l’évolution des représentations sociales et culturelles dont elles s’accompagnent, se trouvent reliées à divers facteurs explicatifs locaux et internationaux, relevant tantôt de l’histoire politique, économique et sociale, tantôt de l’histoire de la littérature et des idées, tantôt encore, plus spécialement, de l’évolution professionnelle du secteur et des politiques du livre mises en œuvre en Communauté française de Belgique. Dans ce double esprit, l’ouvrage se développe en six grands chapitres, organisés chacun en deux parties, allant de l’apparition du livre imprimé vers 1470 jusqu’à nos jours. Les trois premiers iront de la fin du XVe siècle à la fin du XIXe siècle, les trois suivants seront consacrés à l’édition au XXe siècle, avant un épilogue s’employant à dresser l’état des lieux et les perspectives de l’édition en Belgique au seuil du nouveau siècle où nous sommes. Chacune des parties dont sont composés ces chapitres successifs, tout en cernant les tropismes généraux du secteur, mettra en lumière quelques maisons ou quelques politiques éditoriales caractéristiques, par souci d’équilibrer vision globale et cas de figure. On l’aura compris : ainsi construit, l’ouvrage procure, d’une moitié à l’autre, un tableau de plus en plus étoffé du paysage du livre et de l’édition dans les territoires belges d’expression française : de Thierry Martens et Jean de Westphalie, pionniers du livre imprimé dans ce qui deviendra la Belgique, à Henry Kistemaeckers ou Edmond Deman, premiers grands éditeurs de création littéraire, puis des industriels de la bande dessinée jusqu’aux éditeurs qui, plus près de nous, continuent de contribuer à la vie du livre et à la survie des valeurs culturelles dont il reste, sous quelque forme qu’il prenne et quelque concurrence qu’il ait à affronter, l’un des indispensables vecteurs. » [less ▲]

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See detailPUL inv. G 221 : un fragment de document officiel ?
Ricciardetto, Antonio ULg

in Capasso, Mario (Ed.) I papiri dell'Università del Salento (PUL). I. I papiri ieratici e greci (in press)

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See detailCASTLE4D: An Archaeological Information System Based on 3D Point Clouds
Luczfalvy Jancsó, Andrea ULg; Billen, Roland ULg; Hoffsummer, Patrick ULg et al

in Lerma, José Luis (Ed.) Proceedings of the 8th International Congress on Archaeology, Computer Graphics, Cultural Heritage and Innovation : 'ARQUEOLÓGICA 2.0', Valence 5-7 septembre 2016 (in press)

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See detailP.PalauRib. inv. 388 : fragment de codex de papier. IV Rois 15, 26-34 ; 18, 30-33 ; 18, 37-19, 2
Carlig, Nathan ULg

in Coptica Barcinonensia. Texts and Documents from the 5th International Seminar of Coptic Papyrology (Barceloe, 6-13 July 2014) (in press)

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See detailP.PalauRib. inv. 391 : lettre réutilisée comme exercice d’écriture
Carlig, Nathan ULg

in Coptica Barcinonensia. Texts and Documents from the 5th International Seminar of Coptic Papyrology (Barceloe, 6-13 July 2014) (in press)

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See detailAnabase et Katabase dans les représentations indo-iraniennes archaïques
Swennen, Philippe ULg

in Katábasis (in press)

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See detailChristianisme et paideia dans l’Égypte byzantine : l’apport des papyrus scolaires grecs de nature composite profane et chrétienne (fin du IIIe – VIIe/VIIIe siècle)
Carlig, Nathan ULg

in Agosti, Gianfranco; Bianconi, Daniele; Buzi, Paola (Eds.) Pratiche didattiche tra centro e periferia nel Mediterraneo tardoantico (in press)

Documentée par des milliers de papyrus, restes de livres ou de documents, dont les plus anciens remontent à la fin du IIe siècle de notre ère, la christianisation de l’Égypte a profondément modifié le ... [more ▼]

Documentée par des milliers de papyrus, restes de livres ou de documents, dont les plus anciens remontent à la fin du IIe siècle de notre ère, la christianisation de l’Égypte a profondément modifié le rapport des populations à la paideia hellénique, sans pour autant se substituer à elle. L’examen du matériau, de la forme, de la mise en page, du contenu, ainsi que de la provenance des papyrus scolaires grecs à contenu composite profane et chrétien (fin IIIe – 1e moitié VIIIe s.), permettra d'illustrer cette problématique en relevant les continuités et les ruptures dans les stratégies d'enseignement par rapport à la paideia de tradition hellénique. [less ▲]

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See detailRéexamen de la tablette scolaire T.Louvre inv. AF 1195 (Antinoé, VIe siècle = MP³ 2714.01)
Carlig, Nathan ULg

in Davoli, Paola; Pellé, Natascia (Eds.) Polymathei. Studi offerti a Mario Capasso (in press)

Réexamen et nouvelle édition de la tablette scolaire T.Louvre inv. AF 1195 (MP³ 2714.1)

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See detailOn the Vedic Yajamâna-
Swennen, Philippe ULg

in Acts of the 6th Vedic Workshop (in press)

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See detailDeep Background Subtraction with Scene-Specific Convolutional Neural Networks
Braham, Marc ULg; Van Droogenbroeck, Marc ULg

in International Conference on Systems, Signals and Image Processing, Bratislava 23-25 May 2016 (in press)

Background subtraction is usually based on low-level or hand-crafted features such as raw color components, gradients, or local binary patterns. As an improvement, we present a background subtraction ... [more ▼]

Background subtraction is usually based on low-level or hand-crafted features such as raw color components, gradients, or local binary patterns. As an improvement, we present a background subtraction algorithm based on spatial features learned with convolutional neural networks (ConvNets). Our algorithm uses a background model reduced to a single background image and a scene-specific training dataset to feed ConvNets that prove able to learn how to subtract the background from an input image patch. Experiments led on 2014 ChangeDetection.net dataset show that our ConvNet based algorithm at least reproduces the performance of state-of-the-art methods, and that it even outperforms them significantly when scene-specific knowledge is considered. [less ▲]

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See detailSymboles et abréviation chrétiens dans les papyrus littéraires grecs à contenu profane (IVe-VIIe siècles)
Carlig, Nathan ULg

in Derda, Tomasz; Urbanik, Jakub (Eds.) Proceedings of the 27th International Congress of Papyrology. Warsaw, 29 July - 3 August 2013 (in press)

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See detailCours sur l'enseignement et l'apprentissage de l'analyse
Schneider-Gilot, Marguerite ULg

in Actes de la 18e école d'été de didactique des mathématiques (in press)

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See detailBACTERIA MAY CONTRIBUTE TO DISTANT SPECIES RECOGNITION IN ANT-APHID MUTUALISTIC RELATIONSHIPS
Fischer, Christophe ULg; Detrain, Claire; Thonart, Philippe ULg et al

in Insect Science (in press)

Mutualistic interactions between ant and aphid species have been the subject of considerable historical and contemporary investigations, the primary benefits being cleaning and protection for the aphids ... [more ▼]

Mutualistic interactions between ant and aphid species have been the subject of considerable historical and contemporary investigations, the primary benefits being cleaning and protection for the aphids and carbohydrate-rich honeydew for the ants. Questions remained, however, as to the volatile semiochemical factor influencing this relationship. A recent study highlighted the role of bacterial honeydew volatile compounds in ant attraction. Here, ant’s ability to distantly discriminate two aphid species was investigated based on bacterial honeydew semiochemicals emissions using a two-way olfactometer. Both the mutualistic black bean aphid (Aphis fabae L.) and the non-myrmecophilous pea aphid (Acyrthosiphon pisum Harris) were found to be attractive for the black garden ant (Lasius niger L.). The level of attraction was similar in both assays (control versus one of the aphid species). However, when given a choice between these two aphid species, ants showed a significant preference for Aphis fabae. Honeydew volatiles, mostly from bacterial origins, are known to be a key element in ant attraction. Using the same olfactometry protocol, the relative attractiveness of volatiles emitted by honeydews collected from each aphid species and by bacteria isolated from each honeydew was in investigated. Again, ants significantly preferred volatiles released by Aphis fabae honeydew and bacteria. This information suggests that microbial honeydew volatiles enable ants to distantly discriminate aphid species. These results emphasize the importance of investigating the presence and potential effects of microbes in insect symbioses. [less ▲]

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See detailBioclimatism in Architecture : an evolutionary perspective
Nguyen, Anh Tuan; Reiter, Sigrid ULg

in International Journal of Design and Nature and Ecodynamics (in press)

Fundamentals of vernacular architecture have been used in bioclimatic architecture which has gradually become the inspiration of various movements in contemporary architecture. The study points out that ... [more ▼]

Fundamentals of vernacular architecture have been used in bioclimatic architecture which has gradually become the inspiration of various movements in contemporary architecture. The study points out that the development of bioclimatism in architecture has followed the pattern of a natural evolutionary process in which “natural selection” is likely motivated by several factors, including resources and environment problems, and driven by different mechanisms including novel building design concepts and methods, new standards and codes, discoveries in building science and construction costs. This study is an effort aimed to clarify the evolution process of the bioclimatic approach in architecture over time and its influences on contemporary movements in architecture. The paper shows also that the evolutionary theory generated new scientific tools able to improve building design thanks to simulation-based optimization methods applied to building performances. Finally, this study investigates new motivations in the era of climate change whose effects are expected to introduce more challenges as well as more trends towards a sustainable built environment through the new concept of Eco-adaptive architecture. [less ▲]

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See detailDesign and modelisation of a straylight facility for space optical instrument
Mazy, Emmanuel ULg; Stockman, Yvan ULg; Hellin, Marie-Laure ULg

in SPIE (Ed.) 2012 Optical system Design (in press)

In the framework of instrument calibration, straylight issues are a critical aspect that can deteriorate the optical performances of instrument. To cope with this, a new facility is designed dedicated for ... [more ▼]

In the framework of instrument calibration, straylight issues are a critical aspect that can deteriorate the optical performances of instrument. To cope with this, a new facility is designed dedicated for in-field and far field straylight characterization: up to 10-8 for in-field and up to 10-10 for far field straylight in the visible to NIR spectral ranges. Moreover, from previous straylight test performed at CSL, vacuum conditions are needed for reaching the 10-10 rejection requirement mainly to avoid air/dust diffusion. The major constrains are to design a straylight facility either for in-field and out-field straylight measurements. That requires high dynamic range at source level and a high radiance point source allowing small diverging collimated beam. Moreover, the straylight facility has to be implemented into a limited envelope and has to be built with vacuum compatible materials and black coating. As checking the facility performance requires an instrument better than the facility itself, that is no easy to find, so that the performances have been estimated through a modelisation into a non sequential optical software. This modelisation is based on CAD importation of mechanical design, on BRDF characteristics of black coating and on statistical averaging of ray tracing at instrument entrance. [less ▲]

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See detailLe débat sur la véritable nature du corail
Vandersmissen, Jan ULg

in Actes du IXe Congrès de l’Association des Cercles francophones d’Histoire et d’Archéologie de Belgique (in press)

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See detailBrain Computer Interfaces and diagnosis
Chatelle, Camille ULg; LAUREYS, Steven ULg; Noirhomme, Quentin ULg

in Grübler, Gerd; Hildt, Elisabeth (Eds.) Brain-Computer-Interfaces in their ethical, social and cultural contexts (in press)

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See detail« Le rôle des facilitateurs dans la diffusion de normes d’emploi : le cas d’un bureau de chômage belge ».
Beuker, Laura ULg; Orianne, Jean-François ULg

in Meilland, Christelle; Sarfati, François (Eds.) Accompagner vers l'emploi. Quand les dispositifs se mettent en action (in press)

En 2004 a eu lieu une importante réforme concernant la politique d’activation en Belgique : le Plan d’accompagnement des chômeurs (PAC) qui prévoit le renforcement de l’accompagnement des chômeurs ... [more ▼]

En 2004 a eu lieu une importante réforme concernant la politique d’activation en Belgique : le Plan d’accompagnement des chômeurs (PAC) qui prévoit le renforcement de l’accompagnement des chômeurs, effectué par les Services publics de l’emploi (SPE), la mise en place de la procédure d’activation du comportement de recherche d’emploi, effectuée par l’Office national de l’emploi (Onem), ainsi que l’échange systématique de données entre les SPE régionaux et le Fédéral. Désormais, des agents, dénommés facilitateurs, sont spécifiquement chargés de l’évaluation du comportement de recherche d’emploi des chômeurs. Lors des entretiens d’évaluation, l’indemnisation des chômeurs est en jeu. Si la procédure d’évaluation est clairement définie par un cadre règlementaire, la décision, quant à elle, résulte d’un travail d’interprétation qu’effectue l’agent en situation de face à face avec le demandeur d’emploi (DE). Nous tenterons de décrire l’activité de jugement des facilitateurs et montrerons que la décision de ces derniers n’est ni totalement arbitraire, ni totalement déterminée par la réglementation : elle résulte de l’interaction avec le chômeur et de la mobilisation d’une multitude d’appuis conventionnels de l’action (Dodier, 1993). Nous montrerons que ces agents sont aussi des « pourvoyeurs » de normes institutionnelles (Benarrosh, 2006). [less ▲]

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