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See detailLes reliques des saints à la une : piété & dévotion, scandales, art & histoire.
George, Philippe ULg

in George, Philippe (Ed.) Reliques & reliquaires. L'émotion du sacré. Catalogue de l'exposition du Musée d'art religieux de Fourvière-Lyon (2014)

Introduction générale au Catalogue de l'expoisition (21 mars-1er juillet 2014)

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See detailRegional, Interregional and Global Arrangements and Multilateral Organizations
Santander, Sébastian ULg

in Telò, Mario (Ed.) Globalization, Multilateralism, Europe. Towards a Better Global Governance? (2014)

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See detailLéopold Ier et la religion catholique (1831-1865). L’opium d’un Roi ?
Genin, Vincent ULg

in Trésor de Liège : Bulletin trimestriel (2014), 38

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See detailLa pauvreté chez les indépendants : aperçu
Van Rossem, Ronan; Foubert, Joséphine; Van Caillie, Didier ULg

in Pannecoucke, Isabelle; Lahaye, Willy; Vranken, Jan (Eds.) et al Pauvreté en Belgique - Annuaire Fédéral 2014 (2014)

This chapter is a part of the Federal Compendium 2014 "Poverty in Belgium". It deals for the first time with the problem of poverty amongst self-employed people, showing first the statistical magnitude of ... [more ▼]

This chapter is a part of the Federal Compendium 2014 "Poverty in Belgium". It deals for the first time with the problem of poverty amongst self-employed people, showing first the statistical magnitude of the problem and exploring then, from a qualitative analysis, the main causes and managerial errors leading a self-employed people to poverty. [less ▲]

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See detailNouvelles courbes de productivité harmonisées pour le douglas, l'épicéa et les mélèzes en wallonie
Perin, Jérôme ULg; De Thier, Olivier ULg; Claessens, Hugues ULg et al

in Forêt Wallonne (2014), 129(mars/avril),

Les courbes de productivité sont des outils de diagnostic précieux en gestion forestière. Elles permettent d'estimer le potentiel de production d'un peuplement de structure équienne d’âge connu à partir d ... [more ▼]

Les courbes de productivité sont des outils de diagnostic précieux en gestion forestière. Elles permettent d'estimer le potentiel de production d'un peuplement de structure équienne d’âge connu à partir d'une mesure ponctuelle de la hauteur dominante. Une nouvelle génération de modèles de productivité plus fiables ont été développés pour l'épicéa, le douglas et les mélèzes en Wallonie et ont été intégrés au sein d'un outil informatique de diagnostic simple et rapide d'utilisation. [less ▲]

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See detailH50, estimateur d’indice de productivité
Perin, Jérôme ULg; De Thier, Olivier ULg

Computer development (2014)

H50 est un outil qui permet l’estimation de l’indice de productivité de divers peuplements purs équiennes, tant résineux que feuillus. Il intègre, au sein d’une interface simple d’utilisation, les modèles ... [more ▼]

H50 est un outil qui permet l’estimation de l’indice de productivité de divers peuplements purs équiennes, tant résineux que feuillus. Il intègre, au sein d’une interface simple d’utilisation, les modèles de productivité les plus récents développés par les scientifiques de Gembloux Agro-Bio Tech pour l’épicéa, le douglas, les mélèzes, le bouleau verruqueux, le merisier, l’érable sycomore, les chênes indigènes et le robinier. Les données nécessaires à son utilisation sont l’essence, une mesure de hauteur dominante et l’âge du peuplement au moment de la mesure. L’outil se présente sous la forme d’une feuille de calcul qui permet le traitement simultané de données issues de plusieurs peuplements de diverses essences. Il est également possible de directement y copier-coller des données issues de documents encodés sous Microsoft Access ou Excel par exemple. Cet outil a été développé avec l’appui des Services Publics de Wallonie (Département de la Nature et des Forêts, Accord-Cadre Recherche et Vulgarisation forestières). [less ▲]

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See detailExtensive study of HD 25558, a long-period double-lined binary with two SPB components
Sódor, Á.; De Cat, P.; Wright, D. J. et al

in Monthly Notices of the Royal Astronomical Society (2014), 438(4), 3535-3556

We carried out an extensive observational study of the Slowly Pulsating B (SPB) star, HD 25558. The ~2000 spectra obtained at different observatories, the ground-based and MOST satellite light curves ... [more ▼]

We carried out an extensive observational study of the Slowly Pulsating B (SPB) star, HD 25558. The ~2000 spectra obtained at different observatories, the ground-based and MOST satellite light curves revealed that this object is a double-lined spectroscopic binary with an orbital period of about 9 years. The observations do not allow the inference of an orbital solution. We determined the physical parameters of the components, and found that both lie within the SPB instability strip. Accordingly, both show line-profile variations due to stellar pulsations. Eleven independent frequencies were identified in the data. All the frequencies were attributed to one of the two components based on Pixel-by-pixel variability analysis of the line profiles. Spectroscopic and photometric mode identification was also performed for the frequencies of both stars. These results suggest that the inclination and rotation of the two components are rather different. The primary is a slow rotator with ~6 d period, seen at ~60 deg inclination, while the secondary rotates fast with ~1.2 d period, and is seen at ~20 inclination. Spectropolarimetric measurements revealed that the secondary component has a magnetic field with at least a few hundred Gauss strength, while no magnetic field can be detected in the primary. [less ▲]

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See detailA method to evaluate the adaptability of photovoltaic energy on urban facades
Esclapés Jover, F.J.; Ferreiro Prieto, I.; Piera Llodrá, J. et al

in Solar Energy (2014), 105

Solar simulation and evaluation tools are essential for the design of novel energy and environmental strategies. To date, a number published studies in this area focused on the analysis of flat roofs and ... [more ▼]

Solar simulation and evaluation tools are essential for the design of novel energy and environmental strategies. To date, a number published studies in this area focused on the analysis of flat roofs and small urban areas. This paper presents a method, based on Geographic Information Systems (GIS), for defining the potential of photovoltaic solar energy over urban faßcades. The method enables the generation of 3D solar maps from two standard data sources, namely cadastral cartography and data on solar irradiance registered by the Spanish State Meteorological Agency (AEMET, for its initials in Spanish). A series of charts have been generated relating the urban and solar geometries as a result of the numerical model. The charts permit the study of the optimal parameters for the photovoltaic integration over faßcades. In addition, a study conducted over a representative urban area of Madrid is discussed as an example of the applicability of the discussed methodology. Finally, the adequacy of the Spanish Technical Edification Code (CTE, for its initials in Spanish), defining thresholds regarding the usability of photovoltaic energy, has been tested both theoretically and through the case study. Our study concludes that this regulation hinders the architectural integration of photovoltaic devices given the strict usability thresholds adopted. [less ▲]

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See detailIntroduction : Visions du Paradis/Visions of paradise
Melice, Anne ULg; Van Wolputte, Steven; Pype, Katrien

in Social Compass (2014), 61 (1)

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See detailInterview: Rosalind Hackett reflects on religious media in Africa
Melice, Anne ULg; Hackett, Rosalind; Van Wolputte, Steven et al

in Social Compass (2014), 61 (1)

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See detailSpline approximation to conditional Archimedean copula
Lambert, Philippe ULg

in Stat (2014), 3(1), 200-217

We propose a flexible copula model to describe changes with a covariate in the dependence structure of (conditionally exchangeable) random variables. The starting point is a spline approximation to the ... [more ▼]

We propose a flexible copula model to describe changes with a covariate in the dependence structure of (conditionally exchangeable) random variables. The starting point is a spline approximation to the generator of an Archimedean copula. Changes in the dependence structure with a covariate x are modelled by flexible regression of the spline coefficients on x. The performances and properties of the spline estimate of the reference generator and the abilities of these conditional models to approximate conditional copulas are studied through extensive simulations. Inference is made using Bayesian arguments with posterior distributions explored using importance sampling or adaptive MCMC algorithms. The modelling strategy is illustrated with the analysis of bivariate growth curve data. [less ▲]

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See detailRobustness of quantum multifractality
Georgeot, Bertrand; Dubertrand, Rémy; Garcia-Mata, Ignacio et al

Scientific conference (2014, March)

Several models where quantum wave functions display multifractal properties have been recently identified. In the quantum chaos field, they correspond to pseudointegrable systems, with properties ... [more ▼]

Several models where quantum wave functions display multifractal properties have been recently identified. In the quantum chaos field, they correspond to pseudointegrable systems, with properties intermediate between integrability and chaos. In condensed matter, they include electrons in a disordered potential at the Anderson metal-insulator transition. These multifractality properties lead to particular transport properties and appear in conjunction with specific types of spectral statistics. In parallel, progress in experimental techniques allow to observe finer and finer properties of the wavefunctions of quantum or wave systems, as well as to perform experiments with unprecedented control on the dynamics of the systems studied. In this context, this talk will discuss the robustness of multifractality in presence of small perturbations. We identify two distinct processes of multifractality destruction according to the type of perturbation, and specify a range of parameters where multifractality could indeed be observed in physical systems in presence of imperfections. [less ▲]

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See detailLettre d'information trimestrielle n° 13 du projet DACEFI 2
Meunier, Quentin; Moumbogou, Carl; Boldrini, Sylvie et al

E-print/Working paper (2014)

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See detailRapport final du projet FRFC n° 2.4577.10. Dynamique des populations d’arbres et d’herbacées héliophiles en relation avec les anciennes perturbations anthropiques et climatiques
Doucet, Jean-Louis ULg; Hardy, Olivier

Report (2014)

L’objectif principal de ce projet était d’étudier dans quelle mesure l’organisation de la biodiversité végétale des forêts d’Afrique centrale a été influencée par les activités anthropiques et les ... [more ▼]

L’objectif principal de ce projet était d’étudier dans quelle mesure l’organisation de la biodiversité végétale des forêts d’Afrique centrale a été influencée par les activités anthropiques et les changements climatiques qui se sont déroulés au cours des quelques derniers millénaires. A cette fin, cinq disciplines ont été utilisées : (1) l'archéologie afin de dater et de quantifier l’intensité de l’occupation humaine ; (2) l'anthracologie pour reconstituer la végétation présente lors du passage des feux ; (3) la dendrochronologie en vue d’établir des corrélations entre les événements passés et l'âge des arbres ; (4) l'écologie des communautés pour permettre de tester l’existence d’une corrélation entre l’abondance d’espèces héliophiles et les indices d’occupation humaine ; (5) la génétique des populations afin d'identifier des signatures génétiques d’anciens évènements de fragmentation et de changement démographique. [less ▲]

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See detailSpecial Issue on Natural Language Processing and Information Systems
Bouma, Gosse; Ittoo, Ashwin ULg; Basile, Valerio et al

in Data and Knowledge Engineering (2014), 90

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See detailNatural Language Processing and Information Systems
Bouma, Gosse; Ittoo, Ashwin ULg; Basile, Valerio et al

in Data and Knowledge Engineering (2014)

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