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Peer Reviewed
See detailThe coupling of quark and gluon condensates in hot and dense systems
Jaminon, Martine ULg; Van den Bossche, Bruno

in Nuclear Physics A (1994), 567

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See detailCoupling of three lattice instabilities
Ghosez, Philippe ULg; Triscone, Jean-Marc

in Nature Materials (2011), 10

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See detailCoupling of α,ω-dichloropoly (methylphenylsilane) and living poly (styryllithium). Study of the coupling reaction
Demoustier-Champagne, Sophie; Canivet, I.; Devaux, Jacques et al

in Journal of Polymer Science. Part A, Polymer Chemistry (1997), 35(10), 1939-1948

Both di- and triblock copolymers consisting of polystyrene (PS) in conjunction with poly(methylphenylsilane) (PMPS) have been successfully prepared by coupling of ,-dichloro-PMPS with poly(styryllithium ... [more ▼]

Both di- and triblock copolymers consisting of polystyrene (PS) in conjunction with poly(methylphenylsilane) (PMPS) have been successfully prepared by coupling of ,-dichloro-PMPS with poly(styryllithium). The study of this reaction has shown a sudden limitation of the coupling yield, which however depends on the PS block length. Both the polymer concentration and the solvent have also an effect on the coupling reaction. Morphology of the PS-PMPS block copolymers has been observed by transmission electron microscopy. Very complex morphologies have been reported more likely as the result of the competition between the phase separation induced by PS and PMPS immiscibility and the tendency of PMPS to form ordered structures. [less ▲]

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See detailCoupling optimization and dynamic simulation for preventive-corrective control of voltage instability
Capitanescu, Florin ULg; Van Cutsem, Thierry ULg; Wehenkel, Louis ULg

in IEEE Transactions on Power Systems (2009), 24(2), 796-805

This paper proposes an approach coupling security constrained optimal power flow with time-domain simulation to determine an optimal combination of preventive and corrective controls ensuring a voltage ... [more ▼]

This paper proposes an approach coupling security constrained optimal power flow with time-domain simulation to determine an optimal combination of preventive and corrective controls ensuring a voltage stable transition of the system towards a feasible long-term equilibrium, if any of a set of postulated contingencies occurs. A security-constrained optimal power flow is used to adjust the respective contribution of preventive and corrective actions. Furthermore, information is extracted from (quasi steady-state) time-domain simulations to iteratively adjust the set of coupling constraints used by a corrective security constrained optimal power flow until its solution is found dynamically secure and viable. Numerical results are provided on a realistic 55-bus test system. [less ▲]

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See detailCoupling Optiview and Production Simulation
Caprace, Jean-David ULg; Aracil Fernandez, Francisco ULg; Hübler, Michael et al

in Proceeding of the 16th International Conference of Ship and Shipping Research (2009, November)

This paper presents new developments to link OptiView and a Discrete Event production Simulation (DES) software. The OptiView Software, is designed to maximize the number of ship blocks and ship sections ... [more ▼]

This paper presents new developments to link OptiView and a Discrete Event production Simulation (DES) software. The OptiView Software, is designed to maximize the number of ship blocks and ship sections produced in workshops during a certain time window. We decided to combine the strong points of both, the OptiView software and the DES simulation. Indeed, the production simulation is very effective for the modelling of the movement of the gantry crane while OptiView is very powerful for the allocation of blocks and optimization of the surface. This tool was developed to support planners to improve the space utilization and workshop productivity. The combination of both methods will deliver better results for lead time and cost. [less ▲]

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See detailCoupling principal component analysis and Kalman filtering algorithms for on-line aircraft engine diagnostics
Borguet, Sébastien ULg; Léonard, Olivier ULg

in Control Engineering Practice (2009), 17(4), 494-502

Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of performing an accurate assessment of the engine condition ... [more ▼]

Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of performing an accurate assessment of the engine condition. It is generally accepted that a practical implementation of a monitoring tool will rely on a combination of several techniques. In this framework, the present contribution proposes an original approach for coupling two diagnostic tools in order to enhance the capability of an engine health monitoring system. One tool is based on a principal component analysis scheme and the other is based on a Kalman filter technique. The three methodologies are compared and the benefit of the combined tool is demonstrated on simulated fault cases which can be expected in a commercial turbofan layout. (C) 2008 Elsevier Ltd. All rights reserved. [less ▲]

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See detailCoupling Principle Component Analysis and Kalman Filtering Algorithms for On-Line Aircraft Engine Diagnostics
Borguet, Sébastien ULg; Léonard, Olivier ULg

in Proceedings of the 18th ISABE Conference (2007, September)

Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of determining a faithful picture of the engine condition ... [more ▼]

Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of determining a faithful picture of the engine condition. It becomes largely admitted that a practical implementation of a monitoring tool will rely on an adequate fusion of some techniques. In this framework, the present contribution proposes an original approach for coupling two diagnosis tools in order to enhance the capability of an engine health monitoring system. One tool is based on a Principal Component Analysis scheme and the other one on a Kalman filter technique. The three methodologies are compared and the benefit of the fused tool is demonstrated on simulated fault cases which can be expected on a current turbofan layout. [less ▲]

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See detailCoupling thermal simulation and airflow calculation for a better evaluation of natural ventilation strategies
Andre, Philippe ULg; Kummert, M.; Nicolas, Jacques ULg

in Proceedings SSB'98 (1998, December)

A lot of building simulation tools are available today on the market. Most of them rely on very simplified hypotheses concerning the appraisal of airflows: very often, a constant (userdefined) airflow is ... [more ▼]

A lot of building simulation tools are available today on the market. Most of them rely on very simplified hypotheses concerning the appraisal of airflows: very often, a constant (userdefined) airflow is supposed, either to quantify the infiltration rate of a building or to estimate the coupling coefficients between zones. On the other hand, some recent tools become available to calculate air flow couplings between the different zones of a building or between a building and its environment. Those tools rely on simplified hypotheses concerning the temperatures distribution in a building. From that observation, it is obvious that a strong complementarity exists between both categories of tools. Several methods are available to perform this coupling and they are briefly described in the paper. Then, one of these methods is considered in details and successly engineered for the global simulation of two Case Studies of the IEA Annex 30 project: an office building in Germany and an appartment building in Poland. Both applications show the relevancy of the coupling process and the impressive impact on some simulation results. A parametric analysis of some key variables is also performed. As a conclusion, the paper identifies the limitations of the coupling method which is used in this case and proposes some improvements based upon an increase of the automization and integration process. [less ▲]

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See detailCoupling X-ray microtomography and macroscopic soil measurements: a method to enhance near saturation functions?
Beckers, Eléonore ULg; Plougonven, Erwan; Gigot, Nicolas et al

in Hydrology & Earth System Sciences (2014), 18

Agricultural management practices influence soil structure, but the characterization of these modifications and consequences are still not completely understood. In this study, we aim at improving water ... [more ▼]

Agricultural management practices influence soil structure, but the characterization of these modifications and consequences are still not completely understood. In this study, we aim at improving water retention and hydraulic conductivity curves using both classical soil techniques and X-ray microtomography in the context of tillage simplification. We show a good match for retention and conductivity functions between macroscopic measurements and microtomographic information. Microtomography highlights the presence of a secondary pore system. Analysis of structural parameters for these pores appears to be significant and offers additional clues for objects differentiation. We show that relatively fast scans supply not only good results, but also enhance near saturation characterization, making microtomography a highly competitive instrument for routine soil characterization. [less ▲]

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See detailCouplings between Normal Modes studied by the Correlation Function. Duschinsky Effect and Fermi Resonance.
Pavlov-Verevkin, V. B.; Leyh, Bernard ULg; Lorquet, Jean-Claude ULg

in Chemical Physics (1989), 132

The dynamical information contained in a correlation function obtained by the Fourier transform of an electronic spectrum can be used to study strong intermode couplings, such as the Duschinsky effect (DE ... [more ▼]

The dynamical information contained in a correlation function obtained by the Fourier transform of an electronic spectrum can be used to study strong intermode couplings, such as the Duschinsky effect (DE) and the Fermi resonance (FR). Both of them complicate the calculation of the correlation function by destroying its factorisability. In some particular cases, the DE can greatly simplify the form of the correlation function by concealing one of its inherent frequencies. The DE never leads to a beat or to a systematic decrease of the correlation function. A simple classical approximation for the correlation function which takes into account the Lissajous motion of the center of the wave packet, but does not allow for its deformation or spreading is found to be useful in a harmonic model. The FR leads to a beat in the correlation function which results from a periodic energy transfer from the active to the inactive mode. A practical method is given to extract the perturbed and unperturbed energies as well as the coupling matrix element of a FR from a low-resolution spectrum by Fourier transformation of just that part of the spectrum which corresponds to the quasidegenerate interacting states. The case of the B2Sigma+u state of CS2+ is treated as an example. [less ▲]

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See detailCoupure n’est pas renversement. La dialectique marxienne au prisme d’Althusser
Bolmain, Thomas ULg

Scientific conference (2011, December 12)

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See detailLa Cour constitutionnelle au service de l’intérêt général : Commentaire de l’arrêt 155/2007
Douny, Raphaël ULg

in Recueil Général de l'Enregistrement et du Notariat [= RGEN] (2008), 3

Since a decree of April 27th 2006, only public corporations are entitled to the exemption mentioned at article 52 of the walloon Registration Code. Questioned about a potential discrimination against ... [more ▼]

Since a decree of April 27th 2006, only public corporations are entitled to the exemption mentioned at article 52 of the walloon Registration Code. Questioned about a potential discrimination against private companies, the Belgian Constitutional Court stated that a general housing policy, as well as the regional legislator's discretionary power, may justify to limit the benefits of the system to the sales carried out by public corporations. [less ▲]

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See detailLa Cour constitutionnelle de Belgique
Rosoux, Géraldine ULg

in Nouveaux Cahiers du Conseil Constitutionnel (Les) (2013), 41

L'article fait une présentation de la juridiction constitutionnelle belge, à destination des juristes français.

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See detailLa Cour constitutionnelle fait sienne la jurisprudence Zolotoukhine et Ruotsalainen
Kéfer, Fabienne ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2014), (14), 679-683

Si un employeur ou un assuré social a d’abord été poursuivi pénalement, et condamné ou acquitté par un jugement définitif, l’administration devra renoncer à infliger la sanction administrative. Si celle ... [more ▼]

Si un employeur ou un assuré social a d’abord été poursuivi pénalement, et condamné ou acquitté par un jugement définitif, l’administration devra renoncer à infliger la sanction administrative. Si celle-ci est appliquée avant que le juge pénal statue, il se peut que la décision administrative ne soit pas définitive ; en ce cas, le juge pénal reste libre de prononcer une condamnation pénale, ce qui tiendra en échec la sanction administrative. En revanche, si celle-ci a déjà fait l’objet d’une contestation tranchée de manière définitive par un tribunal, ou si, le cas échéant, l’employeur n’a pas formé dans le délai légal une opposition à la contrainte décernée par l’administration, la décision judiciaire ou administrative est une décision définitive au sens de l’article 4 du Protocole n° 7 ; dans ce cas, une condamnation pénale violerait le principe non bis in idem. [less ▲]

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See detailLa Cour constitutionnelle, juge de l'administration
Lewalle, Paul ULg

in En hommage à Francis Delpérée, itinéraires d'un constitutionnaliste (2007)

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See detailLa Cour d’appel de Paris annule la décision du Conseil de la concurrence dans l’affaire des vedettes vendéenne et renvoie l’affaire à l’instruction pour la détermination des coûts incrémentaux
Sibony, Anne-Lise ULg

in Concurrences : Revue des Droits de la Concurrence (2013), (2-2013), 74-77

CA Paris, 20 décembre 2012, Pelletier c/ Régie départementale des passages d’eau de la Vendée, n° 169, RG 2011/05667. La Cour d’appel de Paris annule la décision du Conseil de la concurrence dans ... [more ▼]

CA Paris, 20 décembre 2012, Pelletier c/ Régie départementale des passages d’eau de la Vendée, n° 169, RG 2011/05667. La Cour d’appel de Paris annule la décision du Conseil de la concurrence dans l’affaire des vedettes vendéenne et renvoie l’affaire à l’instruction pour la détermination des coûts incrémentaux. [less ▲]

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See detailLa Cour d’appel de Paris juge qu’aucun test de prix prédateur n’est applicable à une entr eprise chargée d’un service d’intérêt économique général lorsqu’il est tr op dif ficile de distinguer rationnellement entr e les pr estations ef fectuées au titr e du service public et les pr estations soumises à la concurr ence
Sibony, Anne-Lise ULg

in Concurrences : Revue des Droits de la Concurrence (2009), 3

CA Paris, 09.06.09, Vedettes inter-îles vendéennes ; Fr. NCA, 08.04.09, Solaire Direct, 09-MC-01 ; Fr. NCA, 02.06.09, Tramway de la ville de Marseille, 09-D-18 ; Trib. confl., 04.05.09, Préfet de Paris ... [more ▼]

CA Paris, 09.06.09, Vedettes inter-îles vendéennes ; Fr. NCA, 08.04.09, Solaire Direct, 09-MC-01 ; Fr. NCA, 02.06.09, Tramway de la ville de Marseille, 09-D-18 ; Trib. confl., 04.05.09, Préfet de Paris ; Fr. NCA, 02.04.09, “Unik” (France Telecom), 09-D-15 ; Fr. NCA, 08. 04.09, Paie des universités, 09-D-16. [less ▲]

Detailed reference viewed: 39 (3 ULg)