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See detailLe Journal d’Antoine Galland (1646-1715) : la période parisienne. Volume III (1712-1713)
Bauden, Frédéric ULg; Waller, Richard; Veymiers, Richard ULg et al

Book published by Peeters (in press)

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See detailComprendre la mammite bovine comme une enzootie dynamique
Theron, Léonard ULg; Hanzen, Christian ULg

Article for general public (in press)

Health disorders in bovine herds are, in essence, multifactorial. They are based on the equilibrium among various factors. The major difficulty in managing endemias in livestock production emerges from ... [more ▼]

Health disorders in bovine herds are, in essence, multifactorial. They are based on the equilibrium among various factors. The major difficulty in managing endemias in livestock production emerges from two elements: the extreme variability of practices among farms and over time on one hand and on the other hand, the crossed impact of various factors producing the same result. A simple example will illustrate the two problems: Mastitis has epidemiological components that govern their own response to means of prevention. Because no two dairy farms ever have fifty per cent of their livestock production practices in common, the establishment of the usual means of prevention will never have the same dosable impact in each of the two farms (Bradley et al. 2007; Théron et al. 2009). Further, in view of the variability of certain practices or adjustments over time, a situation can vary while all other factors remain constant, due to a neglected invisible factor, thus diminishing the strength of the prevention argument. Each of us has known situations in which post-dipping did not generate the anticipated effects, and situations in which, after a transitory improvement linked to milking practices, the situation degrades again for a cause associated with the milking machine or feeding. The conclusion of this introduction is both simple and complex: the integrated control of mastitis is based on long-term monitoring. This monitoring is justified by the economic and societal impact of this disease. Good monitoring implies the definition of key measurable control points. The aim of this article will be to define the indicators and epidemiological objectives that enable the level of mammary health and its evolution to be defined over time. [less ▲]

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See detailL'âgisme et ses conséquences cliniques en oncogériatrie: état des lieux et pistes d'interventions
Schroyen, Sarah ULg; Adam, Stéphane ULg; Jerusalem, Guy ULg et al

in Revue Médicale de Liège (in press), 69(5-6),

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See detailThematic analysis and the 3rd person plural suffix pronoun in the Medinet Habu historical inscriptions
Gillen, Todd Jonathan ULg

in Kousoulis, Panagiotis (Ed.) Proceedings of the Tenth International Congress of Egyptologists (in press)

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See detailRelaxations for multi-period optimal power flow problems with discrete decision variables
Gemine, Quentin ULg; Ernst, Damien ULg; Louveaux, Quentin ULg et al

in Proceedings of the 18th Power Systems Computation Conference (PSCC'14) (in press)

We consider a class of optimal power flow (OPF) applications where some loads offer a modulation service in exchange for an activation fee. These applications can be modeled as multi-period formulations ... [more ▼]

We consider a class of optimal power flow (OPF) applications where some loads offer a modulation service in exchange for an activation fee. These applications can be modeled as multi-period formulations of the OPF with discrete variables that define mixed-integer non-convex mathematical programs. We propose two types of relaxations to tackle these problems. One is based on a Lagrangian relaxation and the other is based on a network flow relaxation. Both relaxations are tested on several benchmarks and, although they provide a comparable dual bound, it appears that the constraints in the solutions derived from the network flow relaxation are significantly less violated. [less ▲]

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See detailMultiscale Computational Modeling of Deformation Mechanics andIntergranular Fracture in Nanocrystalline Copper
Péron-Lührs, Vincent ULg; Sansoz, Frédéric; Jérusalem, Antoine et al

in Computational Materials Science (in press)

The material description is based on two constitutive elements, the grains (or bulk crystals) and the grainboundaries (GBs), both having their behavior determined atomistically using the quasicontinuum ... [more ▼]

The material description is based on two constitutive elements, the grains (or bulk crystals) and the grainboundaries (GBs), both having their behavior determined atomistically using the quasicontinuum (QC) method by simulating the plastic deformation of [110] tilt crystalline interfaces undergoing simple shear, tension and nano-indentation. Unlike our previous work [V. Péron-Lührs et al., JMPS, 2013] however, the GB thickness is here calibrated in the model, providing more accurate insight into the GB widths according to the interface misorientation angle. In this contribution, the new two-scale model is also validated against fullyatomistic NC simulations tests for two low-angle and high-angle textures and two grain sizes. A simplified strategy aimed at predicting the mechanical behavior of more general textures without the need to run more QC simulations is also proposed, demonstrating significant reduction in computational cost compared to full atomistic simulations. Finally, by studying the response of dogbone samples made of NC copper, we show in this paper that such a two-scale model is able to quantitatively capture the differences in mechanical behavior of NC metals as a function of the texture and grain size, as well as to accurately predict the processes of inter-granular fracture for different GB character distributions. This two-scale method is found to be an effective alternative to other atomistic methods for the prediction of plasticity and fracture in NC materials with a substantial number of 2-D grains such as columnar-grained thin films for micro-scale electro-mechanical devices. [less ▲]

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See detailMaking and transforming art : changes in artists’ materials and practice
Neven, Sylvie ULg; Dubois, Hélène; Eyb-Green, Sigrid et al

Book published by Archetype Publications (in press)

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See detailDescribing the ‘elusive’ : Availability, Preparation and Use of Anthocyanin Colourants in Mediaeval European Illuminators’ Workshops
Neven, Sylvie ULg; Sanyova, Jana

in Dubois, Hélène; Eyb-Green, Sigrid; Kroustallis, Stephanos (Eds.) et al Making and transforming art : changes in artists’ materials and practice (in press)

Anthocyanins are colorants which provide most of the blue, red and violet colours in numerous plants and fruits. Because of their great sensitivity to the slightest changes in pH and their instability in ... [more ▼]

Anthocyanins are colorants which provide most of the blue, red and violet colours in numerous plants and fruits. Because of their great sensitivity to the slightest changes in pH and their instability in ordinary daylight, it is generally thought that these colorants were used only to dye everyday clothes in a domestic context. However, medieval artists’ recipe books not only describe these elusive substances, but also indicate their use in illumination. This is notably the case for the texts of the so-called ‘Strasbourg Tradition’, written in the south of Germany and the north of France between 1400 and 1560, and partly composed from an older Alsatian treatise on illumination. Departing from these sources, this paper details the methods employed to prepare these colorants and (re)evaluates their diverse uses in painting and illuminating techniques. This technical data subsequently served as a basis upon which to make reconstructions. Finally, an attempt to correlate the information provided by these recipe books with specific artistic practices was carried out by collating the descriptions with the results of analyses from contemporary illuminations by an Alsatian workshop active in the same geographical area. [less ▲]

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See detailThe “Tuchlein” Colours in the Strasbourg Family Text: Recipes for Anthocyanin Pigments
Neven, Sylvie ULg; Sanyova, Jana

in Dyes in History and Archaeology (in press)

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See detailAlchemy and Art Technology in German Medieval and Early Modern Recipe Books
Neven, Sylvie ULg

in Dupré, Sven (Ed.) Laboratory of Art (in press)

In the Middle Ages and premodern period, artisanal knowledge was transmitted via collections of recipes often grouped concomitantly with alchemical texts and instructions. Except for some very well-known ... [more ▼]

In the Middle Ages and premodern period, artisanal knowledge was transmitted via collections of recipes often grouped concomitantly with alchemical texts and instructions. Except for some very well-known artistic treatises, such as those by Eraclius or the Schedula diversarum artium, attributed to Theophilus, detection and identification of alchemical content within recipe books has been rare and fraught with difficulty. In a broad sense, alchemy could be defined as the ‘art of transmutation’, referring to the perfection of base or impure matter (often metal or stone) into perfect substances. In this context, alchemical procedures rely on artisanal or craft practices. Thus, any overlap between alchemy and art-technological procedures can be explained by the use of various identical materials and substances. Both are concerned with the description of colours—especially in regard to processes of change, the making of pigments, the production of artificial gemstones, the imitation of gold and silver and the transmutation of materials. Both require procedures involving precise and specifically defined actions, prescriptions and ingredients. So both use identical rhetorical recipe formulations that reflect a ‘step by step’ procedure. Assuming that alchemical and artistic texts have the same textual format, raises the question: did they also have the same methods of production and reception? Using a corpus of about forty manuscripts produced in Northern Europe between the fourteenth and the sixteenth centuries, this paper investigates the authorship and the context of production behind these writings, and scrutinizes the process of their compilation and dissemination. This serves, on a variety of levels, to elucidate information about their former nature and use. Finally, this paper examines the various ways alchemical and artisanal recipes were embedded within recipe books. It also proposes some clues to help in locating, identifying and demarcating this type of alchemical writing within the literature of recipes. [less ▲]

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See detailA ‘Dutch vision’ of Community Based Tourism: Dutch People in the Belgian Ardennes
Schmitz, Serge ULg

in Cawley, Mary; Bicalho, Ana Maria; Laurens, Lucette (Eds.) The Sustainability of Rural Systems: global and local challenges and opportunities (in press)

One theoretical recommendation to develop sustainable rural tourism is to base its development on local resources. This should embed the tourist activity into the local society, avoid easy relocalization ... [more ▼]

One theoretical recommendation to develop sustainable rural tourism is to base its development on local resources. This should embed the tourist activity into the local society, avoid easy relocalization of investment, and help to brand the destination. The Belgian Ardennes is a proximate recreational location for Dutch people. The paper lists the local resources that attract Dutch tourists and the ways in which regional and local authorities deal with this tourist development. Based on key actor interviews and in depth analysis of the promotional material produced both by authorities and commercial companies, the paper underlines the hotchpotch of ways used in selling and consuming the Ardennes. Due to the lack of local entrepreneurship and because the Dutch tourism enterprises have better knowledge of the Dutch market, these enterprises control a huge share of tourism activities in the Ardennes. These Dutch investments change the destination as well as the local identity. Initially, Dutch companies developed a form of tourism based on nature and the rural landscape, but they diversified their activities into non land based tourism (not involving the use of land as in agriculture hors sol) and the ‘disneyfication’ of places. This Belgian case study follows more or less the well known ‘tourist destination life cycle model’, but the originality of the paper is to stress the difficulties posed for authorities to regulate tourism development and to maintain the quality of the destination. [less ▲]

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See detail"Colour ConText". A Database on Colour Practice and Colour Knowledge in Pre-Modern Europe
Neven, Sylvie ULg; Clarke, Mark; Leonhard, Karin et al

in Dubois, Hélène; Eyb-Green, Sigrid; Kroustallis, Stephanos (Eds.) et al Making and transforming art : changes in artists’ materials and practice (in press)

Detailed reference viewed: 12 (0 ULg)
See detailFondements de Science politique
Baudewyns, Pierre; Braspenning, Thierry; Legrand, Vincent et al

Book published by De Boeck (in press)

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See detailA note on weighted likelihood and Jeffreys modal estimation of proficiency levels in polytomous item response models
Magis, David ULg

in Psychometrika (in press)

Warm (1989) established the equivalence between the so-called Jeffreys modal and the weighted likelihood estimators of proficiency level with some dichotomous item response models. The purpose of this ... [more ▼]

Warm (1989) established the equivalence between the so-called Jeffreys modal and the weighted likelihood estimators of proficiency level with some dichotomous item response models. The purpose of this note is to extend this result to polytomous item response models. First, a general condition is derived to ensure the perfect equivalence between these two estimators. Second, it is shown that this condition is fulfilled by two broad classes of polytomous models including, among others, the partial credit, rating scale, graded response and nominal response models. [less ▲]

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See detailLaïcité, neutralité, séparation des Eglises et de l’Etat : quelles frontières pour les services publics en Belgique ?
Husson, Jean-François ULg

in Dassetto, Felice (Ed.) Neutralité et faits religieux - Quelles interactions dans les services publics (in press)

La présence des signes religieux dans l’espace public, et en particulier dans et autour des services publics, est particulièrement sensible et cristallise le débat autour de la laïcité, de la neutralité ... [more ▼]

La présence des signes religieux dans l’espace public, et en particulier dans et autour des services publics, est particulièrement sensible et cristallise le débat autour de la laïcité, de la neutralité, de la séparation des Eglises et de l’Etat et de l’impartialité, pour reprendre les divers concepts régulièrement inscrits sur l’agenda politique. La présente contribution propose dans un premier temps de revenir sur les concepts généralement évoqués, parfois invoqués ou brandis, de laïcité, de séparation des Eglises et de l’Etat, de neutralité et d’impartialité (2.) puis d’aborder les postures possibles de services publics dans une société multiculturelle (3.). Les limites et la mise en œuvre de ces divers concepts sont ensuite questionnées (4.). [less ▲]

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See detailBilinguisme et digraphisme dans le codex miscellaneus de Montserrat
Macedo, Gabriel ULg

in Rochette, Bruno; Marganne, Marie-Hélène (Eds.) Bilinguisme et digraphisme dans le monde gréco-romain. L'apport ds papyrus latins. Actes de la table ronde de Liège, 12-13 mai 2011 (in press)

The present paper proposes a codicologic, palaeographic and contextual study of an extraordinary Late Antique book: the Montserrat codex miscellaneus. Dated on palaeographic grounds to the IV century AD ... [more ▼]

The present paper proposes a codicologic, palaeographic and contextual study of an extraordinary Late Antique book: the Montserrat codex miscellaneus. Dated on palaeographic grounds to the IV century AD, this manuscript provides us with evidence of particular interest on bilingualism and digraphism in Byzantine Egypt, for it is the only antique codex containing texts in both Greek and Latin, of both Christian and Secular content, and pertaining to different literary genres, such as rhetoric, hexametric poetry and Christian liturgy. [less ▲]

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See detailL'Alceste de Barclone (P. Montserrat inv. 158-161). Édition, traduction et analyse contextuelle d'un poème latin conservé sur papyrus
Macedo, Gabriel ULg

Book published by Presses Universitaires de Liège (in press)

This book consists of a textual and contextual study of the anonymous Latin poem known as the Alcestis Barcinonensis or « Barcelona Alcestis ». The work opens with a thorough codicological and ... [more ▼]

This book consists of a textual and contextual study of the anonymous Latin poem known as the Alcestis Barcinonensis or « Barcelona Alcestis ». The work opens with a thorough codicological and palaeographic analysis of the Montserrat codex miscellaneous (2nd half of the IV century) to which the Alcestis belongs, with particular attention to the pages containing the poem. Subsequently, a transcription of the papyrological text and a critical edition are providede alongside a French translation and a critical and linguistic commentary. Lastly, the question of the context of production and reception of the Alcestis in Late Antiquity is addressed. [less ▲]

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See detailJules Destrée animateur de la vie littéraire
Dozo, Björn-Olav ULg

in Institut Destrée (Ed.) Centenaire de la Lettre au Roi de Jules Destrée (in press)

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See detailA New Three Object Triangulation Algorithm for Mobile Robot Positioning
Pierlot, Vincent ULg; Van Droogenbroeck, Marc ULg

in IEEE Transactions on Robotics (in press)

Positioning is a fundamental issue in mobile robot applications. It can be achieved in many ways. Among them, triangulation based on angles measured with the help of beacons is a proven technique. Most of ... [more ▼]

Positioning is a fundamental issue in mobile robot applications. It can be achieved in many ways. Among them, triangulation based on angles measured with the help of beacons is a proven technique. Most of the many triangulation algorithms proposed so far have major limitations. For example, some of them need a particular beacon ordering, have blind spots, or only work within the triangle defined by the three beacons. More reliable methods exist; however, they have an increasing complexity or they require to handle certain spatial arrangements separately. In this paper, we present a simple and new three object triangulation algorithm, named ToTal, that natively works in the whole plane, and for any beacon ordering. We also provide a comprehensive comparison between many algorithms, and show that our algorithm is faster and simpler than comparable algorithms. In addition to its inherent efficiency, our algorithm provides a very useful and unique reliability measure, assessable anywhere in the plane, which can be used to identify pathological cases, or as a validation gate in Kalman filters. [less ▲]

Detailed reference viewed: 90 (15 ULg)