ORBi Open Repository and Bibliography
In may 2007, the ULg's Administrative Board (joined in June 2007 by the FUSAGx) decided to create an institutional repository and defined a strong institutional self-archiving policy to increase the visibility, accessibility and impact of the University's publications (Board's decision).
This decision led to the official launch, in November 2008, of the ORBi platform including both the Academic Bibliography and the Institutional Repository of the Wallonia-Europe University Academy.
Advanced optimization methods for power systems - Panciatici, Patrick; Campi, M.C.; Garatti, S.; Low, S.H.; Molzahn, D.K.; Sun, A.X.; Wehenkel, Louis
Power system planning and operation offers multitudinous
opportunities for optimization methods. In practice,
these problems are generally large-scale, non-linear, subject to
uncertainties, and combine both continuous and discrete variables.
In the recent years, a number of complementary theoretical
advances in addressing such problems have been obtained in the
field of applied mathematics. The paper introduces a selection of
these advances in the fields of non-convex optimization, in mixedinteger
programming, and in optimization under uncertainty.
The practical relevance of these developments for power systems
planning and operation are discussed, and the opportunities for
combining them, together with high-performance computing and
big data infrastructures, as well as novel machine learning and
randomized algorithms, are highlighted.
Magnetic shielding properties of a bulk Bi-2223 superconducting hollow cylinder subjected to an inhomogeneous magnetic field - Hogan, Kevin; Wera, Laurent; Fagnard, Jean-François; Vanderheyden, Benoît; Vanderbemden, Philippe
Bulk superconducting materials are well suited for magnetic shielding applications. At low frequencies, the performances of superconductors are higher than those of conventional ferromagnetic materials.
In shielding applications, two situations may be encountered. The first one corresponds to the case where the screen has to shield a volume from the magnetic field in its environment; this corresponds to an “immunity” problem. In the second situation, the screen has to prevent the magnetic field generated by an electronic device from perturbing its environment; this is an “emission” problem.
So far, superconducting screens have been extensively studied in “immunity” and were subjected to uniform...