Open Repository and Bibliography (University of Liège)

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Multifractal analysis of functionsWeierstrass' continuous nowhere differentiable functions :with 0 < a < 1, b and odd integer and ab > 1 + 3/2.Given a function f : R R, we want to study the regularity in each of its points : the significance of the different singularities by computing the Hausdorff dimension of the sets of points sharing a common regularity :Weierstrass' continuous nowhere differ…

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International audience

3ème édition

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The frequency-domain nonlinear subspace identification (FNSI) method has recently been successfully applied to large-scale nonlinear structures. One of the key features of FNSI is the nonlinear generalisation of the stabilisation diagram. However, as in linear system identification, the selection of the model order in the diagram is complicated by the presence of spurious poles, resulting from no…

The present guide provides a general method for calculating the thermal rating of overhead lines. It is intended for updating and expanding the Cigré Technical Brochure 207, which only covered the thermal behaviour of overhead conductors at low current densities (<1.5 A/mm2) and low temperatures (<100ºC), and did not consider variations in weather conditions or current with time. In the recent ye…

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The flight of barnacle geese at airspeeds representing high-speed migrating flight is investigated using experiments and simulations. The experimental part of the work involved the filming of three barnacle geese flying at different airspeeds in a wind tunnel. The video footage was analysed in order to extract the wing kinematics. Additional information, such as wing geometry and camber was obtai…