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See detailNote de recherche n°22. Les activités économiques et industrielles
Bianchet, Bruno ULg; Wertz, I.; Halleux, Jean-Marie ULg et al

Report (2011)

Detailed reference viewed: 24 (6 ULg)
See detailNote du traducteur
Broonen, Jean-Paul ULg

in Watts, A. G.; Van Esbroeck, R. (Eds.) Nouvelles compétences pour un avenir différent : services d'orientation et de conseil dans l'enseignement supérieur de l'Union européenne (1999)

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See detailNote en contrepoint sur nihilominus
Longrée, Dominique ULg

in Mellet, Sylvie (Ed.) Concession et dialogisme, Les connecteurs concessifs à l’épreuve du corpus (2008)

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See detailNote lue à l'Académie en présentant les deux premières parties de la Théorie des mouvements diurne, annuel et séculaire de l'axe du monde
Folie, François ULg

in Bulletins de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique (1883), 3e série, t. 6(8), 134-138

The process that allowed at the author to find the expression of the diurnal nutation could be applied at the research for the precession and annual nutation. This application lead him to new results

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See detailA note on abelian returns in rotation words
Rampersad, Narad; Rigo, Michel ULg; Salimov, Pavel ULg

in Theoretical Computer Science (2014), 528

Pursuing the study started by Rigo, Salimov and Vandomme, we use elementary number-theoretic techniques to characterize rotation words having a finite set of abelian returns to all prefixes. We also make ... [more ▼]

Pursuing the study started by Rigo, Salimov and Vandomme, we use elementary number-theoretic techniques to characterize rotation words having a finite set of abelian returns to all prefixes. We also make the connection between the three gap theorem and the number of semi-abelian returns for Sturmian words, simplifying some arguments developed by Puzynina and Zamboni. [less ▲]

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See detailA note on abelian returns in rotation words
Rampersad, Narad; Rigo, Michel ULg; Salimov, Pavel ULg

in Theoretical Computer Science (2014), 528

Pursuing the study started by Rigo, Salimov and Vandomme, we use elementary number-theoretic techniques to characterize rotation words having a finite set of abelian returns to all prefixes. We also make ... [more ▼]

Pursuing the study started by Rigo, Salimov and Vandomme, we use elementary number-theoretic techniques to characterize rotation words having a finite set of abelian returns to all prefixes. We also make the connection between the three gap theorem and the number of semi-abelian returns for Sturmian words, simplifying some arguments developed by Puzynina and Zamboni. [less ▲]

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See detailA note on behavioral tolerance to meprobamate
Richelle, Marc ULg

in Journal of the Experimental Analysis of Behavior (1965), 8(1), 45-46

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See detailA note on finite-sample efficiencies of estimators for the minimum volume ellipsoid
Croux, C.; Haesbroeck, Gentiane ULg

in Journal of Statistical Computation & Simulation (2002), 72(7), 585-596

Among the most well known estimators of multivariate location and scatter is the Minimum Volume Ellipsoid (MVE). Many algorithms have been proposed to compute it. Most of these attempt merely to ... [more ▼]

Among the most well known estimators of multivariate location and scatter is the Minimum Volume Ellipsoid (MVE). Many algorithms have been proposed to compute it. Most of these attempt merely to approximate as close as possible the exact MVE, but some of them led to the definition of new estimators which maintain the properties of robustness and affine equivariance that make the MVE so attractive. Rousseeuw and van Zomeren (1990) used the (p+1)- subset estimator which was modified by Croux and Haesbroeck (1997) to give rise to the averaged (p+1)- subset estimator . This note shows by means of simulations that the averaged (p+1)-subset estimator outperforms the exact estimator as far as finite-sample efficiency is concerned. We also present a new robust estimator for the MVE, closely related to the averaged (p+1)-subset estimator, but yielding a natural ranking of the data. [less ▲]

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See detailNote on formation of stellar absorption lines
Swings, Polydore ULg; Struve, Otto

in Publications of the American Astronomical Society (1936), 8

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See detailA note on longevity enhancing investment
Eeckhoudt, Louis; Pestieau, Pierre ULg

in Economics Letters (2008)

We argue that risk averse individuals prefer to increase their longevity in the direction of rectangularization of the survival curve instead of an upward shift of that curve. Risk aversion is measured by ... [more ▼]

We argue that risk averse individuals prefer to increase their longevity in the direction of rectangularization of the survival curve instead of an upward shift of that curve. Risk aversion is measured by the concept of fear of ruin. [less ▲]

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See detailA note on molecular absorption in interstellar space
Swings, Polydore ULg

in Monthly Notices of the Royal Astronomical Society (1937), 97(3), 212-215

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See detailA note on moments of scaling functions
Bastin, Françoise ULg; Nicolay, Samuel ULg

in Rocky Mountain Journal of Mathematics (2004), 34(4, Winter), 1197-1206

In this note we give a proof of a reproducing formula for polynomials using natural decay hypothesis. This leads to a new exact formula for computation of moments of even order.

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See detailNote on singular optima in laminate design problems
Bruyneel, Michael; Duysinx, Pierre ULg

in Structural and Multidisciplinary Optimization (2006), 31(2), 156-159

This paper studies the design of laminates subject to restrictions on the ply strength. The minimum weight design is considered. It is shown that this formulation includes singular optima, which are ... [more ▼]

This paper studies the design of laminates subject to restrictions on the ply strength. The minimum weight design is considered. It is shown that this formulation includes singular optima, which are similar to the ones observed in topology optimization including local stress constraints. In laminate design, these singular optima are linked to the removal of 'zero thickness' plies from the stacking sequence. It is shown how the fiber orientation variables can circumvent the singularity by relaxing the strength constraints related to such vanishing plies. This demonstrates the key role of fiber orientations in the optimization of laminates and the need for their efficient treatment as design variables. [less ▲]

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See detailA note on stability, robustness and performance of output feedback nonlinear model predictive control
Imsland, Lars; Findeisen, Rolf; Bullinger, Eric ULg et al

in Journal of Process Control (2003), 13(7), 633-644

In recent years. nonlinear model predictive control (NMPC) schemes have been derived that guarantee stability of the closed loop under the assumption of full state information. However, only limited ... [more ▼]

In recent years. nonlinear model predictive control (NMPC) schemes have been derived that guarantee stability of the closed loop under the assumption of full state information. However, only limited advances have been made with respect to output feedback in the framework of nonlinear predictive control. This paper combines stabilizing instantaneous state feedback NMPC schemes with high-gain observers to achieve output feedback stabilization. For a uniformly observable MIMO system class it is shown that the resulting closed loop is asymptotically stable. Furthermore, the output feedback NMPC scheme recovers the performance of the state feedback in the sense that the region of attraction and the trajectories of the state feedback scheme can be recovered to any degree of accuracy for large enough observer gains, thus leading to semi-regional results. Additionally, it is shown that the output feedback controller is robust with respect to static sector bounded nonlinear input uncertainties. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]

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See detailA note on stars with nebulous absorption lines
Swings, Polydore ULg; Struve, Otto

in Publications of the Astronomical Society of the Pacific [=PASP] (1940), 52

Detailed reference viewed: 9 (0 ULg)