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See detailHow to enhance citizenship and reduce dysfunctional patient behavior during service interactions: An empirical study in the nursing context
Lerch, Jennifer; Schmitz, Gertrud; Büttgen, Marion et al

Conference (2016, June)

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See detailPolar interface phonons in ionic toroidal systems
Nguyen, Ngoc Duy ULg; Evrard, Roger ULg; Stroscio, Michael

in Journal of Physics : Condensed Matter (2016), 28(34), 345301

We use the dielectric continuum model to obtain the polar (Fuchs–Kliewer like) interface vibration modes of toroids made of ionic materials either embedded in a different material or in vacuum, with ... [more ▼]

We use the dielectric continuum model to obtain the polar (Fuchs–Kliewer like) interface vibration modes of toroids made of ionic materials either embedded in a different material or in vacuum, with applications to nanotoroids specially in mind. We report the frequencies of these modes and describe the electric potential they produce. We establish the quantum-mechanical Hamiltonian appropriate for their interaction with electric charges. This Hamiltonian can be used to describe the effect of this interaction on different types of charged particles either inside or outside the torus. [less ▲]

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See detailModeling, sensitivity analysis and parameter identification of a twin screw extruder
Grimard, Jonathan; Dewasme, Laurent; Thiry, Justine ULg et al

Conference (2016, June)

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See detailA Gaussian mixture approach to model stochastic processes in power systems
Gemine, Quentin ULg; Cornélusse, Bertrand ULg; Glavic, Mevludin ULg et al

in Proceedings of the 19th Power Systems Computation Conference (PSCC'16) (2016, June)

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using ... [more ▼]

Probabilistic methods are emerging for operating electrical networks, driven by the integration of renewable generation. We present an algorithm that models a stochastic process as a Markov process using a multivariate Gaussian Mixture Model, as well as a model selection technique to search for the adequate Markov order and number of components. The main motivation is to sample future trajectories of these processes from their last available observations (i.e. measurements). An accurate model that can generate these synthetic trajectories is critical for applications such as security analysis or decision making based on lookahead models. The proposed approach is evaluated in a lookahead security analysis framework, i.e. by estimating the probability of future system states to respect operational constraints. The evaluation is performed using a 33-bus distribution test system, for power consumption and wind speed processes. Empirical results show that the GMM approach slightly outperforms an ARMA approach. [less ▲]

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See detailReshaping Diplomacy / Réinventer la diplomatie. Networks, Practices and Dynamics of Socialization in European Diplomacy since 1919 / Sociabilités, réseaux et pratiques diplomatiques en Europe depuis 1919
Genin, Vincent ULg; Osmont, Matthieu; Raineau, Thomas

Book published by P.I.E.-Peter Lang (2016)

After the First World War, reshaping the art of diplomacy is a necessity. International lawyers, merchant bankers, academics, journalists and senior officials became key-figures of a new International ... [more ▼]

After the First World War, reshaping the art of diplomacy is a necessity. International lawyers, merchant bankers, academics, journalists and senior officials became key-figures of a new International order in which the diplomats have lost their monopoly over foreign affairs. New diplomatic arenas emerged such as the League of Nations, the precursor of today’s multilateral organizations. In that series of ten case studies, the European continent appears as a fertile ground where new diplomatic practices have emerged along the whole 20th century. This book brings together the edited proceedings of the RICHIE International Conference organized in Brussels on 20 and 21 March 2015, under the title «Networks, Dynamics of Socialization and Practices in European Diplomacy since 1919». [less ▲]

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See detailWASP-121 b: a hot Jupiter close to tidal disruption transiting an active F star
Delrez, Laetitia ULg; Santerne, A.; Almenara, J.-M. et al

in Monthly Notices of the Royal Astronomical Society (2016), 458(4), 4025-4043

We present the discovery by the WASP-South survey of WASP-121 b, a new remarkable short-period transiting hot Jupiter. The planet has a mass of 1.183_{-0.062}^{+0.064} MJup, a radius of 1.865 ± 0.044 RJup ... [more ▼]

We present the discovery by the WASP-South survey of WASP-121 b, a new remarkable short-period transiting hot Jupiter. The planet has a mass of 1.183_{-0.062}^{+0.064} MJup, a radius of 1.865 ± 0.044 RJup, and transits every 1.274 9255_{-0.000 0025}^{+0.000 0020} days an active F6-type main-sequence star (V = 10.4, 1.353_{-0.079}^{+0.080} M⊙, 1.458 ± 0.030 R⊙, Teff = 6460 ± 140 K). A notable property of WASP-121 b is that its orbital semimajor axis is only ˜1.15 times larger than its Roche limit, which suggests that the planet is close to tidal disruption. Furthermore, its large size and extreme irradiation (˜7.1 109 erg s-1 cm-2) make it an excellent target for atmospheric studies via secondary eclipse observations. Using the TRAnsiting Planets and PlanetesImals Small Telescope, we indeed detect its emission in the z'-band at better than ˜4σ, the measured occultation depth being 603 ± 130 ppm. Finally, from a measurement of the Rossiter-McLaughlin effect with the CORALIE spectrograph, we infer a sky-projected spin-orbit angle of 257.8°_{-5.5°}^{+5.3°}. This result may suggest a significant misalignment between the spin axis of the host star and the orbital plane of the planet. If confirmed, this high misalignment would favour a migration of the planet involving strong dynamical events with a third body. [less ▲]

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See detailLa Présidence de la Fédération Internationale des Professeurs de Français
Defays, Jean-Marc ULg

in Vivre le Français : Revue de l'Association Belge des Professeurs de Français (2016), 249

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See detailA quoi sert un astrophysicien?
Stiepen, Arnaud ULg

Conference given outside the academic context (2016)

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See detailAux astres, citoyens! Oufti! Liège dans l'espace!
Stiepen, Arnaud ULg

Article for general public (2016)

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See detailBenchmarking for Bayesian Reinforcement Learning
Castronovo, Michaël ULg; Ernst, Damien ULg; Couëtoux, Adrien ULg et al

in PLoS ONE (2016)

In the Bayesian Reinforcement Learning (BRL) setting, agents try to maximise the col- lected rewards while interacting with their environment while using some prior knowledge that is accessed beforehand ... [more ▼]

In the Bayesian Reinforcement Learning (BRL) setting, agents try to maximise the col- lected rewards while interacting with their environment while using some prior knowledge that is accessed beforehand. Many BRL algorithms have already been proposed, but even though a few toy examples exist in the literature, there are still no extensive or rigorous benchmarks to compare them. The paper addresses this problem, and provides a new BRL comparison methodology along with the corresponding open source library. In this methodology, a comparison criterion that measures the performance of algorithms on large sets of Markov Decision Processes (MDPs) drawn from some probability distributions is defined. In order to enable the comparison of non-anytime algorithms, our methodology also includes a detailed analysis of the computation time requirement of each algorithm. Our library is released with all source code and documentation: it includes three test prob- lems, each of which has two different prior distributions, and seven state-of-the-art RL algorithms. Finally, our library is illustrated by comparing all the available algorithms and the results are discussed. [less ▲]

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See detailFreeze-dried mucoadhesive polymeric system containing pegylated lipoplexes: Towards a vaginal sustained released system for siRNA
Furst, Tania ULg; Dakwar, George R.; Zagato, Elisa et al

in Journal of Controlled Release (2016)

Topical vaginal sustained delivery of siRNA presents a significant challenge due to the short residence time of formulations. Therefore, a drug delivery system capable to adhere to the vaginal mucosa is ... [more ▼]

Topical vaginal sustained delivery of siRNA presents a significant challenge due to the short residence time of formulations. Therefore, a drug delivery system capable to adhere to the vaginal mucosa is desirable, as it could allow a prolonged delivery and increase the effectiveness of the therapy. The aim of this project is to develop a polymeric solid mucoadhesive system, loaded with lipoplexes, able to be progressively rehydrated by the vaginal fluids to form a hydrogel and to deliver siRNA to vaginal tissues. To minimize adhesive interactions with vaginal mucus components, lipoplexes were coated with different derivatives of polyethylene glycol: DPSE-PEG2000, DPSE-PEG750 and ceramide-PEG2000. Based on stability and diffusion properties in simulated vaginal fluids, lipoplexes containing DSPE-PEG2000 were selected and incorporated in hydroxyethyl cellulose (HEC) hydrogels. Solid systems, called sponges, were then obtained by freeze-drying. Sponges meet acceptable mechanical characteristics and their hardness, eformability and mucoadhesive properties are not influenced by the presence of lipoplexes. Finally, mobility and stability of lipoplexes inside sponges rehydrated with vaginal mucus, mimicking in situ conditions, were evaluated by advanced fluorescence microscopy. The release rate was found to be influenced by the HEC concentration and consequently by the viscosity after rehydration. This study demonstrates the feasibility of entrapping pegylated lipoplexes into a solid matrix system for a prolonged delivery of siRNA into the vagina. [less ▲]

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See detail(Re)producing others: diversity and discrimination in the discourse of Northern League
Mazzola, Alessandro ULg; Mandin, Jérémy ULg

in Jamin, Jérôme (Ed.) L'extrême droite en Europe (2016)

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See detailDevelopment of a semi-analytical model of volumetric expander for system-level simulation.
Oudkerk, Jean-François ULg

in Proceedings of ECOS 2016 (2016, June)

Organic Rankine cycles are particularly well suited for recovering energy from low-grade heat sources, such as industrial waste, engine exhaust gas or solar concentrated power. In ow-capacity systems ... [more ▼]

Organic Rankine cycles are particularly well suited for recovering energy from low-grade heat sources, such as industrial waste, engine exhaust gas or solar concentrated power. In ow-capacity systems, volumetric expanders are often preferred to turbomachines because of their reliability, robustness, low rotational speed and their ability to handle high pressure ratios… Different types of machines have been investigated and successfully tested by the uthors and tools have been developed in order to analyse experimental data. Semi-empirical odel was built to analyse losses, detect potential improvement and simulate performances. This paper present a simple and fastcomputing semi-analytical model useful for simulate dynamic system integrating volumetric expander. This model is validated on experimental data and compare to black-box model. [less ▲]

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See detailDu programme d'origine à la restauration des charpentes et couvertures
Hoffsummer, Patrick ULg

in Monumental : Revue Scientifique et Technique des Monuments Historiques (2016), 2016 1(1), 6-11

Les toitures des monuments historiques en France représentent un patrimoine pour l'histoire de l'architecture et l'histoire de la construction. Leur typologie dépend de nombreux facteurs: type de bâtiment ... [more ▼]

Les toitures des monuments historiques en France représentent un patrimoine pour l'histoire de l'architecture et l'histoire de la construction. Leur typologie dépend de nombreux facteurs: type de bâtiment, contexte historique, géographique. Leur conservation exige une analyse profonde de leur état et impose certains choix au moment de la restauration en fonction de leur réaffectation. [less ▲]

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See detailJuli Zeh, Corpus delicti: Un procès
Houscheid, Karin ULg

Article for general public (2016)

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See detailBelgium v. NN (L) International: Tax, Yes; Penalty, No
Docclo, Caroline ULg

in Tax Planning International (2016)

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See detailSibylle Lewitscharoff, Apostoloff
Houscheid, Karin ULg

Article for general public (2016)

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See detailEtude de cas, cathédrale de Beauvais (Oise), histoire de la construction et datations grâce à l'archéologie du bois
Hoffsummer, Patrick ULg

in Monumental : Revue Scientifique et Technique des Monuments Historiques (2016), 2016 1

L'archéologie des charpentes de la cathédrale de Beauvais combinée à la dendrochronologie et aux analyses de la couverture en plomb a largement contribué à l'enrichissement des connaissances à propos de l ... [more ▼]

L'archéologie des charpentes de la cathédrale de Beauvais combinée à la dendrochronologie et aux analyses de la couverture en plomb a largement contribué à l'enrichissement des connaissances à propos de l'histoire mouvementée du plus haut chœur gothique. [less ▲]

Detailed reference viewed: 14 (1 ULg)