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See detailPower Point - support des exposés théoriques du cours de droit administratif
Durviaux, Ann-Lawrence ULg

Learning material (2010)

L'intégralité des exposés théoriques du cours sous forme de Power Point

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See detailPower system observability and related functions : derivation of appropriate strategies and algorithms
Van Cutsem, Thierry ULg

in International Journal of Electrical Power & Energy Systems (1985), 7

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See detailPower system security assessment: a position paper
Marceau, R.J.; Endrenyi, J.; Allan, R. et al

in Electra (1997), 175

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See detailPower System Simulation Challenges
Aristidou, Petros ULg; Plumier, Frédéric ULg; Van Cutsem, Thierry ULg et al

Scientific conference (2013, March 05)

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See detailPower system transient stability preventive and emergency control
Ruiz-Vega, Daniel; Wehenkel, Louis ULg; Ernst, Damien ULg et al

in Savulescu, Savu (Ed.) Real-Time Stability in Power Systems 2nd Edition (2014)

A general approach to real-time transient stability control is described, yielding various complementary techniques: pure preventive, open loop emergency, and closed loop emergency controls. Recent ... [more ▼]

A general approach to real-time transient stability control is described, yielding various complementary techniques: pure preventive, open loop emergency, and closed loop emergency controls. Recent progress in terms of a global transient stability constrained optimal power flow are presented, yielding in a scalable nonlinear programming formulation which allows to take near-optimal decisions for preventive control with a computing budget corresponding only to a few runs of standard optimal power flow and time domain simulations. These complementary techniques meet the stringent conditions imposed by the real-life applications. [less ▲]

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See detailPower systems stability control: Reinforcement learning framework
Ernst, Damien ULg; Glavic, Mevludin; Wehenkel, Louis ULg

in IEEE Transactions on Power Systems (2004), 19(1), 427-435

In this paper, we explore how a computational approach to learning from interactions, called reinforcement learning (RL), can be applied to control power systems. We describe some challenges in power ... [more ▼]

In this paper, we explore how a computational approach to learning from interactions, called reinforcement learning (RL), can be applied to control power systems. We describe some challenges in power system control and discuss how some of those challenges could be met by using these RL methods. The difficulties associated with their application to control power systems are described and discussed as well as strategies that can be adopted to overcome them. Two reinforcement learning modes are considered: the online mode in which the interaction occurs with the real power system and the offline mode in which the interaction occurs with a simulation model of the real power system. We present two case studies made on a four-machine power system model. The first one concerns the design by means of RL algorithms used in offline mode of a dynamic brake controller. The second concerns RL methods used in online mode when applied to control a thyristor controlled series capacitor (TCSC) aimed to damp power system oscillations. [less ▲]

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See detailPower transmission and particle acceleration along the Io flux tube
Hess, Sebastien L G; Delamere, Peter; Dols, Vincent et al

in Journal of Geophysical Research. Space Physics (2010), 115

Io's motion relative to the Jovian magnetic field generates a power of about 10^12 W, which is thought to propagate as an Alfven wave along the magnetic field line. This power is transmitted to the ... [more ▼]

Io's motion relative to the Jovian magnetic field generates a power of about 10^12 W, which is thought to propagate as an Alfven wave along the magnetic field line. This power is transmitted to the electrons, which will then precipitate and generate the observed auroral phenomena from UV to radio wavelengths. A more detailed look at this hypothesis shows some difficulties: Can the Alfven waves escape the torus or are they trapped inside? Where and how are the particles accelerated? In which direction? Is there enough power transmitted to the particles to explain the strong brightness of the auroral emissions in UV, IR, visible, and radio? In other words, can we make a global, consistent model of the Io-Jupiter interaction that matches all the observations? To answer these questions, we review the models and studies that have been proposed so far. We show that the Alfven waves need to be filamented by a turbulent cascade process and accelerate the electrons at high latitude in order to explain the observations and to form a consistent scheme of the Io-Jupiter interaction. [less ▲]

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See detailPowerful Alternative Asymmetric Catalytic Dihydroxylation of Olefins
Colaux, Catherine ULg; Krief, Alain

Poster (2000, November)

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See detailPowerful alternative asymmetric Catalytic dihydroxylation of olefins
Colaux, Catherine ULg; Krief, Alain; Dumont, Willy

Poster (1998, November)

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See detailPowerful alternative asymmetric catalytic dihydroxylation of olefins
Colaux, Catherine ULg; Krief, Alain

Poster (1998, December)

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See detailPowerful Alternative Asymmetric Catalytic Dihydroxylation of Olefins
Colaux, Catherine ULg; Krief, Alain

Poster (2000, July)

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See detailPowerpoint "Les conditions de production de la communication" (33 p)
Geuens, Geoffrey ULg

Learning material (2010)

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See detailPowerpoint "Les principaux groupes médiatiques belges privés" (9 pages)
Geuens, Geoffrey ULg

Learning material (2014)

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See detailPOX 186: the ultracompact blue compact dwarf galaxy reveals its nature
Doublier, V.; Kunth, D.; Courbin, F. et al

in Astronomy and Astrophysics (2000), 353

High resolution, ground based R and I band observations of the ultra compact dwarf galaxy POX 186 are presented. The data, obtained with the ESO New Technology Telescope (NTT), are analyzed using a new ... [more ▼]

High resolution, ground based R and I band observations of the ultra compact dwarf galaxy POX 186 are presented. The data, obtained with the ESO New Technology Telescope (NTT), are analyzed using a new deconvolution algorithm which allows one to resolve the innermost regions of this stellar-like object into three Super-Star Clusters (SSC). Upper limits to both masses (M ~ 10[SUP]5[/SUP] M[SUB]sun[/SUB]) and physical sizes (<=60pc) of the SSCs are set. In addition, and maybe most importantly, extended light emission underlying the compact star-forming region is clearly detected in both bands. The R-I color rules out nebular Halpha contamination and is consistent with an old stellar population. This casts doubt on the hypothesis that Blue Compact Dwarf Galaxies (BCDG) are young galaxies. based on observations carried out at NTT in La Silla, operated by the European Southern Observatory, during Director's Discretionary Time. [less ▲]

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See detailPoxviruses as vaccine vectors
Pastoret, Paul-Pierre ULg; Vanderplasschen, Alain ULg

in Comparative Immunology, Microbiology and Infectious Diseases (2003), 26

The discovery of Jenner in 1798 founded the science of immunology and eventually led to smallpox eradication from the earth in 1980 after a world-wide vaccination campaign with vaccinia virus (another ... [more ▼]

The discovery of Jenner in 1798 founded the science of immunology and eventually led to smallpox eradication from the earth in 1980 after a world-wide vaccination campaign with vaccinia virus (another poxvirus) and paradoxically, despite the eradication of smallpox, there has been an explosion of interest in vaccinia virus in the eighties. This interest has stemmed in part from the application of molecular genetics to clone and express foreign genes from recombinant vaccinia viruses. Vaccinia is also gaining renewed interest due to bioterrorism.These recombinant viruses have multiple applications in research and vaccinology and led to the development of vectored vaccines, such as the recombinant vaccinia rabies vaccine used to eliminate rabies in Western Europe and, more recently, in the United States. Secondly, alternative poxvirus vectors, such as avipox viruses, were proved to be even safer and efficacious non-replicating vectors (suiciole vectors) when used in non-avian species. [less ▲]

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See detailPP1 targeting and regulation as revealed by the structure of a PP1 delta-MYPT1 complex.
Terrak, Mohammed ULg; Kerff, Frédéric ULg; Langsetmo, K. et al

in Biophysical Journal (2004), 86(1), 172-172

Detailed reference viewed: 17 (8 ULg)