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See detailLa décentralisation et les possibilités de développement locales en RDC : l'intégration des économies locales en RDC par l'approche de filières certifiées "équitables" : l'exemple du CDI-Bwamanda
Duquesne, Brigitte ULiege; Lebailly, Philippe ULiege

in Conférence 25èmes Journées Scientifiques ATM 2009 "Attractivité, gouvernance et développement", 3, 4 et 5 juin 2009 : actes du colloque (2009)

Detailed reference viewed: 137 (21 ULiège)
See detailDécentralisation fiscale en RDC
Kabamba, Bob ULiege

Conference (2009, November 05)

Detailed reference viewed: 34 (0 ULiège)
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See detailLa décentralisation fiscale et financière en République Démocratique du Congo: éléments économiques et juridiques
Bourgeois, Marc ULiege; Uhoda, Maxime ULiege

in Revue de la Faculté de Droit de l'Université de Liège (2011), 3-4

Detailed reference viewed: 128 (38 ULiège)
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See detailDecentralising the Australian Short Story: Murray Bail's "Camouflage"
Herbillon, Marie ULiege

Conference (2013)

Detailed reference viewed: 33 (8 ULiège)
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See detailDecentralized local backup LSP calculation with efficient bandwidth sharing
Mélon, Laurent; Blanchy, François; Leduc, Guy ULiege

in 10th IEEE International Conference on Telecommunications (2003, February)

This paper focuses on the protection of virtual circuits (Label Switched Paths, LSPs) in a (G)MPLS (Generalised Multi-Protocol Label Switching) network. The proposed algorithm is designed to protect ... [more ▼]

This paper focuses on the protection of virtual circuits (Label Switched Paths, LSPs) in a (G)MPLS (Generalised Multi-Protocol Label Switching) network. The proposed algorithm is designed to protect traffic with strong delay requirements such as EF (Expedited Forwarding) ordered aggregates in a DiffServ domain. For this type of application endto- end recovery schemes are usually considered to be far too slow. Local, fast-rerouting is the only solution which can compete with restoration times offered by SONET self-healing ring. However local restoration has a cost in terms of extra bandwidth consumed for the backup paths. Our scheme thus includes a sophisticated resource aggregation mechanism based on the concepts of "backup-backup aggregation" and "backupprimary aggregation". The path selection algorithm is also designed to efficiently reduce the resource usage. Moreover, when considering LSPs at different preemption levels, our algorithm is able to correctly calculate the amount of bandwidth that can be preempted despite the sharing of resource. We show that our approach, though local, can compete with the state-of-theart end-to-end recovery schemes in terms of resource reservation. The major contribution of our scheme, the "backup-primary aggregation", was then also used in the context of end-to-end recovery and improved its performance substantially. [less ▲]

Detailed reference viewed: 36 (1 ULiège)
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See detailA Decentralized Mechanical Ventilation System with Heat Recovery: Experimental Assessment of Thermal Comfort and Pollutant Removal Ability
Ajaji, Youness; Andre, Philippe ULiege

Conference (2013)

In decentralized mechanical ventilation, air supply being very close to exhaust, a short-circuit from supply towards the extraction point may occur, increasing energy consumption and decreasing air ... [more ▼]

In decentralized mechanical ventilation, air supply being very close to exhaust, a short-circuit from supply towards the extraction point may occur, increasing energy consumption and decreasing air diffusion quality. To estimate this quality together with thermal comfort, we measured in a climatic chamber, thermal comfort parameters and local ventilation effectiveness for temperature, at 12 locations and 3 heights within the occupied zone, for 4 ventilation regimes and 3 thermal configurations of the climatic chamber. We also assessed the system ability to remove carbon dioxide. The results show that the maximum air velocity measured is 0.12m/s, the predicted mean votes fluctuate from -0.8 to - 0.5 and local ventilation effectiveness is from 0.94 to 1. In addition, the decentralized system maintains carbon dioxide concentration below 1250ppm for most configurations tested. The predicted mean votes are quite low because the heating set point is also quite low: 20°C. We conclude that no thermal discomfort can be felt, the system has a great ability to remove pollutants, and the risk that a short-circuit occurs is low. [less ▲]

Detailed reference viewed: 18 (1 ULiège)
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See detailDecentralized mechanical ventilation with heat recovery
Aparecida Silva, Cleide; Gendebien, Samuel ULiege; Hannay, Jules et al

in Proceedings of the 32nd AIVC Conference (2011, October)

A new local ventilation device is designed in such a way to procure ventilation “on demand” in each room, with a maximum of effectiveness and a minimum of energy waste. It consists in a parapipedic box to ... [more ▼]

A new local ventilation device is designed in such a way to procure ventilation “on demand” in each room, with a maximum of effectiveness and a minimum of energy waste. It consists in a parapipedic box to be located in one external wall (for example, just above a window) and containing two (injection and extraction) fans and a recovery heat exchanger. The design of the heat exchanger is associated to the selection of the two fans in view of the best compromise between heat recovery effectiveness and “auxiliary” consumptions. Great attention is paid to supply and exhaust air openings on both indoor and outdoor sides of the device, in order to get the highest ventilation effectiveness. A fair compromise is looked for between air flow control “authority” and “auxiliary” consumption. [less ▲]

Detailed reference viewed: 319 (11 ULiège)
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See detailDecentralized Model Predictive Control of Voltage Source Converters for AC Frequency Containment
Papangelis, Lampros ULiege; Debry, Marie-Sophie; Prevost, Thibault et al

in International Journal of Electrical Power & Energy Systems (2018), 98

This paper presents a novel control scheme for exchange of frequency support between asynchronous AC systems through a High Voltage Direct Current link or grid. The proposed controller bears the spirit of ... [more ▼]

This paper presents a novel control scheme for exchange of frequency support between asynchronous AC systems through a High Voltage Direct Current link or grid. The proposed controller bears the spirit of an emergency scheme. Using only locally available measurements, each converter can identify emergency situations that could potentially lead to unacceptable frequency values. Then appropriate control actions are taken to restrain the frequency decline and prevent it from reaching the thresholds of load shedding relays. Inspired of Model Predictive Control, the method uses simplified models of the AC and DC sides of the converter, and can incorporate various constraints. The effectiveness of the method is demonstrated on a test system consisting of two asynchronous AC areas interconnected through a five-terminal HVDC grid. [less ▲]

Detailed reference viewed: 23 (3 ULiège)
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See detailDecentralized Prediction of End-to-End Network Performance Classes
Liao, Yongjun ULiege; Du, Wei; Geurts, Pierre ULiege et al

in Proc. of the 7th International Conference on emerging Networking EXperiments and Technologies (CoNEXT) (2011, December 08)

In large-scale networks, full-mesh active probing of end-to-end performance metrics is infeasible. Measuring a small set of pairs and predicting the others is more scalable. Under this framework, we ... [more ▼]

In large-scale networks, full-mesh active probing of end-to-end performance metrics is infeasible. Measuring a small set of pairs and predicting the others is more scalable. Under this framework, we formulate the prediction problem as matrix completion, whereby unknown entries of an incomplete matrix of pairwise measurements are to be predicted. This problem can be solved by matrix factorization because performance matrices have a low rank, thanks to the correlations among measurements. Moreover, its resolution can be fully decentralized without actually building matrices nor relying on special landmarks or central servers. In this paper we demonstrate that this approach is also applicable when the performance values are not measured exactly, but are only known to belong to one among some predefined performance classes, such as "good" and "bad". Such classification-based formulation not only fulfills the requirements of many Internet applications but also reduces the measurement cost and enables a unified treatment of various performance metrics. We propose a decentralized approach based on Stochastic Gradient Descent to solve this class-based matrix completion problem. Experiments on various datasets, relative to two kinds of metrics, show the accuracy of the approach, its robustness against erroneous measurements and its usability on peer selection. [less ▲]

Detailed reference viewed: 183 (20 ULiège)
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See detailDecentralized reactive power dispatch for a time-varying multi-TSO system
Phulpin, Yannick; Begovic, Miroslav; Petit, Marc et al

in Proceedings of the 42nd Hawaii International Conference on System Sciences (HICSS-42) (2009)

This paper addresses the problem of reactive power dispatch in a power system partitioned into several areas controlled by different transmission system operators. Previous research has shown that nearly ... [more ▼]

This paper addresses the problem of reactive power dispatch in a power system partitioned into several areas controlled by different transmission system operators. Previous research has shown that nearly optimal performance could be achieved in a time-invariant system by using a specific iterative decentralized control scheme with no information exchange. At each iteration of this scheme, every transmission system operator concurrently schedules its own control settings for the next iteration while representing the neighboring areas with external network equivalents. This paper focuses on some parameter tracking techniques to extend the range of application of the decentralized control scheme to time-varying systems, where the time-varying nature of the system is modeled as a succession of steady-state operating conditions with variation of the load demand. Those new techniques are evaluated in the context of IEEE 118 bus system partitioned into three control areas. [less ▲]

Detailed reference viewed: 43 (9 ULiège)
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See detailDecentralized tap changer blocking and load shedding against voltage instability: prospective tests on the RTE system
Capitanescu, Florin ULiege; Otomega, Bogdan; Lefebvre, Hervé et al

in International Journal of Electrical Power & Energy Systems (2009), 31(9), 570-576

This paper reports on prospective tests of a system protection scheme against long-term voltage instability relying on a set of distributed controllers, each monitoring a transmission voltage, blocking ... [more ▼]

This paper reports on prospective tests of a system protection scheme against long-term voltage instability relying on a set of distributed controllers, each monitoring a transmission voltage, blocking tap changers and shedding loads in a zone. The emergency actions adjust in magnitude and location to the disturbance. Each controller acts in closed-loop, which guarantees robustness. The method is illustrated on a real-life model of the Western region of the RTE system. The choice of the controller settings is discussed in some detail and examples of performance are given, combining the above remedial action with capacitor switching and secondary voltage control. [less ▲]

Detailed reference viewed: 235 (22 ULiège)
See detailDeception and the value of truth: a case study from the fifteenth century
Bauden, Frédéric ULiege

Scientific conference (2014, April 13)

Detailed reference viewed: 30 (8 ULiège)
See detailDéception et incertitude en démocratie
Jamin, Jérôme ULiege

Conference (2015, September 10)

Detailed reference viewed: 27 (7 ULiège)
See detailDécharge : un bioréacteur biologique.
Thonart, Philippe ULiege; Auguste, E.; Rikir, R.

Scientific conference (1991, September)

Detailed reference viewed: 12 (1 ULiège)
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See detailLa décharge du débiteur après transfert, sous autorité de justice, de la totalité de son entreprise : les conditions et la procédure en questions
Pasteger, David ULiege; Vandenbulke, Antoine ULiege

in Revue de Droit Commercial Belge = Tijdschrift voor Belgisch Handelsrecht (2016), 9

Comment of the judgment of the Commercial Court of Ghent (Oudenaarde section), October 1st 2015, concerning the discharge of a debtor whose business has been fully transferred on the basis of Article 67 ... [more ▼]

Comment of the judgment of the Commercial Court of Ghent (Oudenaarde section), October 1st 2015, concerning the discharge of a debtor whose business has been fully transferred on the basis of Article 67 of the Law on Business Continuity (LBC), excluding the extraordinary debts in the moratorium secured by a mortgage on the family home. The paper then explains in detail the conditions of the discharge provided under Article 70 LBC and compares it with the similar mechanism of the bankrupt's excusability. [less ▲]

Detailed reference viewed: 37 (7 ULiège)
See detailLa decharge egale un bioreacteur a gerer.
Dumont, M.; Taillieu, X.; Destain, Jacqueline ULiege et al

in Tribune de l'Eau (La) (1993), 46(564), 3-10

Detailed reference viewed: 19 (0 ULiège)
See detailLa décharge, un bioréacteur à gérer - La problématique des déchets solides dans les villes africaines d'importances moyenne
Thonart, Philippe ULiege; Drion, R.; Kapepula, D. et al

in Actes de l'Atelier de formation et d'échanges d'expériences "Pour un développement durable au Rwanda - Les déchets comme matières premières" (1997, June)

Detailed reference viewed: 26 (5 ULiège)