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See detailLa Passion d'Augsbourg, un texte dramatique occitan ?
Henrard, Nadine ULg

in Henrard, Nadine; Moreno, Paola; Thiry, Martine (Eds.) Convergences médiévales. Épopée, lyrique, roman. Mélanges offerts à Madeleine Tyssens (2001)

Étude d’un fragment méconnu d’un texte roman du XIe s. exhumé en 1932 des archives de la cathédrale d’Augsbourg, et dont la localisation autant que la nature sont mal définies (dialecte d’oc ou d’oïl ... [more ▼]

Étude d’un fragment méconnu d’un texte roman du XIe s. exhumé en 1932 des archives de la cathédrale d’Augsbourg, et dont la localisation autant que la nature sont mal définies (dialecte d’oc ou d’oïl ? passion dramatique, composition narrative ou lyrique ?). L’analyse s’emploie à démontrer que cette prédiction de la Passion du Christ se rattache à la tradition eschatologique latine et aux Oracula sibyllana, dont elle constituerait la première manifestation conservée en langue vulgaire. La comparaison avec d’autres textes apparentés en provenance d’Espagne et de Catalogne nous a conduite à conclure à une origine méridionale de l’œuvre, et à établir qu’il s’agit d’une poésie originellement lyrique dont l’utilisation à des fins dramatiques n’est pas à exclure. [less ▲]

Detailed reference viewed: 41 (6 ULg)
See detailLa passion de la recherche
Fournier, Bernard ULg

in Reuchamps, Min; Grandjean, Geoffrey; Flaba, Elodie (Eds.) "Dessinez la Belgique" : Comment les jeunes Belges francophones voient le fédéralisme (2009)

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See detailLa passion du philosophe
Durand, Pascal ULg

Article for general public (1995)

Compte rendu de La Passion de l'origine. Recherches sur l'esthétique transcendantale et la phénoménologie, de Daniel Giovannangeli (Paris, Galilée, 1995)

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See detailLa passion du philosophe
Durand, Pascal ULg

in Avancées (1995)

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See detailPassion et liberté : Le programme phénoménologique de Sartre
Cormann, Grégory ULg

in Cabestan, Philippe (Ed.) Lectures de Sartre (2011)

Detailed reference viewed: 32 (8 ULg)
See detailPassion, finitude et liberté. Nouvelles lectures de l'Esquisse d'une théorie des émotions
Cormann, Grégory ULg

Scientific conference (2011, May 05)

Detailed reference viewed: 9 (2 ULg)
See detailPassions italiennes. Pour André Sempoux
Sterck-Spinette, A.; Renard, M.-F.; Barbalato, B. et al

Book published by Emile Van Balberghe (2000)

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See detailPassive ACS of Delphi-C3 nanosatellite
François, V.; Hannay, S.; Geuzaine, Christophe ULg

in Proceedings of the URSI Forum 2010 (2010, May)

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See detailPassive designs and strategies for low-cost housing using simulation-based optimization and different thermal comfort criteria
Nguyen, Anh Tuan ULg; Reiter, Sigrid ULg

in Journal of Building Performance Simulation [=JBPS] (2014), 7(1), 68-81

An optimum design of low-cost housing offers low-income urban inhabitants great opportunities to obtain a shelter at an affordable price and acceptable indoor thermal conditions. In this paper, the design ... [more ▼]

An optimum design of low-cost housing offers low-income urban inhabitants great opportunities to obtain a shelter at an affordable price and acceptable indoor thermal conditions. In this paper, the design and operation of a low-cost dwelling were numerically optimized using a simulation-based approach. Three multi-objective cost functions including construction cost, thermal comfort performance and 50-year operating cost were applied for naturally ventilated and air-conditioned buildings. Thermal environment inside the house was controlled and assessed by two thermal comfort models. Optimization problems which consist of 18 design parameters and 6 ventilation strategies were examined by two population-based probabilistic optimization algorithms (particle swarm optimization and hybrid algorithm). Optimum designs corresponding to each objective function, differences in optimal solutions, energy saving by the adaptive comfort approach and optimization effectiveness were outlined. The optimization method used in this paper shows a considerable potential of comfort improvement, energy saving and operating cost reduction. [less ▲]

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See detailPassive energy transfer and dissipation for isolation from transcient broadband disturbances
Kerschen, Gaëtan ULg; McFarland, D. Michael; Kowtko, J. et al

in US-Korea Joint Seminar/Workshop on Smart Structures Technologies, Seoul, 2004 (2004)

We discuss passive nonlinear energy pumping from a linear (main) mechanical structure to a weakly coupled, local, passive nonlinear energy sink (NES). We show that the NES can be designed to effectively ... [more ▼]

We discuss passive nonlinear energy pumping from a linear (main) mechanical structure to a weakly coupled, local, passive nonlinear energy sink (NES). We show that the NES can be designed to effectively absorb vibrational energy from the main structure in a one-way, irreversible fashion. We demonstrate the occurrence of pumping cascades, where an appropriately designed NES passively extracts energy sequentially from a number of modes of the main (linear) structure, interacting individually with each mode before moving to the next. Experimental results confirm our theoretical findings. The applications of the nonlinear energy pumping phenomenon to the problem of vibration and shock isolation will be discussed [less ▲]

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See detailPassive immunization against insulin-like growth factor-I alters the placental lactogen concentration in pregnant rats
Devolder, Anne; Renaville, Robert ULg; Massart, Serge et al

in Journal of Animal Science (1994), 72(suppl 1), 159

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See detailPassive introduction of carrier fringes in real-time photorefractive interferometers for single interferogram analysis
Pauliat, Gilles; Roosen, Gérald; Georges, Marc ULg et al

in Journal of the European Optical Society (2006), 1

We propose a new technique to introduce carrier fringes in an holographic interferometric set-up for deformation or vibration analyses. This technique makes use of the anisotropic diffraction processes of ... [more ▼]

We propose a new technique to introduce carrier fringes in an holographic interferometric set-up for deformation or vibration analyses. This technique makes use of the anisotropic diffraction processes of photorefractive crystals. The main advantage of the proposed technique is that it just involves static components, no moving parts or active components are required. This technique is demonstrated in a real-time interferometric set-up operating at the wavelength of 1.06 μm and with a GaAs photorefractive crystal as the holographic medium. [less ▲]

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See detailPassive non linear TET and its application to vibration absorption: a review
Lee, Y. S.; Vakakis, Alexander F.; Bergman, L. A. et al

in Proceedings of the Institution of Mechanical Engineers - Part K - Journal of Multi-body Dynamics (2008), 222

This review paper discusses recent efforts to passively move unwanted energy from a primary structure to a local essentially non-linear attachment (termed a non-linear energy sink) by utilizing targeted ... [more ▼]

This review paper discusses recent efforts to passively move unwanted energy from a primary structure to a local essentially non-linear attachment (termed a non-linear energy sink) by utilizing targeted energy transfer (TET) (or non-linear energy pumping). First, fundamental theoretical aspects of TET will be discussed, including the essentially non-linear governing dynamical mechanisms for TET. Then, results of experimental studies that validate the TET phenomenon will be presented. Finally, some current engineering applications of TET will be discussed. The concept of TET may be regarded as contrary to current common engineering practise, which generally views non-linearities in engineering systems as either unwanted or, at most, as small perturbations of linear behaviour. Essentially non-linear stiffness elements are intentionally introduced in the design that give rise to new dynamical phenomena that are very beneficial to the design objectives and have no counterparts in linear theory. Care, of course, is taken to avoid some of the unwanted dynamic effects that such elements may introduce, such as chaotic responses or other responses that are contrary to the design objectives. [less ▲]

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See detailPassive radar testbed and preliminary experiments in recognition of non-cooperative aircraft intruding into controlled airspace
Pisane, Jonathan ULg; Azarian, Sylvain; Lesturgie, Marc et al

Conference (2012, September 14)

We consider the automatic classification of aircraft observed with a passive radar, thus using illuminators of opportunity. We deployed a testbed and developed classification algorithms. Preliminary tests ... [more ▼]

We consider the automatic classification of aircraft observed with a passive radar, thus using illuminators of opportunity. We deployed a testbed and developed classification algorithms. Preliminary tests show a correct recognition rate of 72%. [less ▲]

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See detailPassive solar buildings : development and evaluation of a model-based optimal controller through experimentation and simulation.
Andre, Philippe ULg; Kummert, M.

in Proceedings of the International conference Energy efficient technologies in indoor environment (2005, September)

Different heating system controllers for passive solar buildings are compared on two different buildings. The performance criterion combines energy performance and thermal comfort using the "cost function ... [more ▼]

Different heating system controllers for passive solar buildings are compared on two different buildings. The performance criterion combines energy performance and thermal comfort using the "cost function" paradigm. The experimental facilities did not allow a direct experimental comparison by using two identical buildings. The controllers were implemented alternatively in one building and a performance comparison was obtained in two ways: first by identifying short periods that have similar driving variables (weather and building occupancy) and comparing the experimental obtained in both cases. The second method mixes experiments and simulation using a well-tuned model of the building and its occupants. This paper discusses the results obtained using both methods and shows that both methods give consistent estimates of the difference between controllers, while the second method allows to extrapolate useful information from the limited data available. In a second evaluation step the controller is applied to a multizone building, and a detailed model is used for the HVAC system. The model-based control algorithm is not modified. It is based on a simplified internal model. It is shown that the optimal controller's performance varies strongly with the zone that is considered and the reference zone that is used. However, it is never worse than the performance of a reference controller. The global performance at the building level depends on the selected reference zone and on the building sensitivity to overheating. [less ▲]

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See detailPASSIVE SUPPRESSION OF AEROELASTIC INSTABILITIES OF IN-FLOW WINGS BY TARGETED ENERGY TRANSFERS TO LIGHTWEIGHT ESSENTIALLY NONLINEAR ATTACHMENTS
lee, Young S.; Vakakis, Alexander F.; Bergman, Lawrence A. et al

in International Forum on Aerolasticity and Strucural Dynamics, Stockholm, 2007 (2007)

Theoretical and experimental suppression of aeroelastic instabilities by means of broadband passive targeted energy transfers has been recently studied. A single-degree-offreedom (SDOF) nonlinear energy ... [more ▼]

Theoretical and experimental suppression of aeroelastic instabilities by means of broadband passive targeted energy transfers has been recently studied. A single-degree-offreedom (SDOF) nonlinear energy sink (NES) was coupled to a 2-DOF rigid wing modeled in the low-speed, subsonic regime with quasi-steady aerodynamic theory. The nonlinear attachment was designed and optimized to suppress the critical nonlinear modal energy exchanges between the flow and the (pitch and heave) wing modes, thus suppressing the (transient) triggering mechanism of aeroelastic instability. We performed bifurcation analysis to find regions of robust passive aeroelastic suppression in parameter space. Then, we employed multi-degreeof-freedom nonlinear energy sinks (MDOF NESs) to improve robustness of the aeroelastic instability suppression. Bifurcation analysis by a numerical continuation technique demonstrated that controlling the occurrence of a limit point cycle (LPC or saddle-node) bifurcation point above a Hopf bifurcation point is crucial to enhancing suppression robustness. MDOF NESs not only can enhance robustness of suppression against even strong gust-like disturbances, but they require lower NES mass compared to SDOF NES designs. The validity of the theoretical findings was proven by a series of wind tunnel experiments. [less ▲]

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See detailPassive target classification based on low-frequency bistatic backscattering coefficients
Pisane, Jonathan ULg; Lesturgie, Marc; Verly, Jacques ULg

Conference (2010, June)

In this paper, we describe a new automatic target recognition method for classifying targets according to their bistatic backscattering coefficients. The classification model is based on the construction of ... [more ▼]

In this paper, we describe a new automatic target recognition method for classifying targets according to their bistatic backscattering coefficients. The classification model is based on the construction of subspaces, one per target class. Results show an overall correct classification rate of about 83%, indicating that our method seems to be valid. Further improvements of the algorithm are also discussed. [less ▲]

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See detailPassive temperature tomography experiments to characterize transmissivity and connectivity of preferential flow paths in fractured media
Klepikova, Maria ULg

in Journal of Hydrology (2014)

The detection of preferential flow paths and the characterization of their hydraulic properties are major challenges in fractured rock hydrology. In this study, we propose to use temperature as a passive ... [more ▼]

The detection of preferential flow paths and the characterization of their hydraulic properties are major challenges in fractured rock hydrology. In this study, we propose to use temperature as a passive tracer to characterize fracture connectivity and hydraulic properties. In particular, we propose a new temperature tomography field method in which borehole temperature profiles are measured under different pumping conditions by changing successively the pumping and observation boreholes. To interpret these temperature-depth profiles, we propose a three step inversion-based framework. We consider first an inverse model that allows for automatic permeable fracture detection from borehole temperature profiles under pumping conditions. Then we apply a borehole-scale flow and temperature model to produce flowmeter profiles by inversion of temperature profiles. This second step uses inversion to characterize the relationship between temperature variations with depth and borehole flow velocities (Klepikova et al., 2011). The third inverse step, which exploits cross-borehole flowmeter tests, is aimed at inferring inter-borehole fracture connectivity and transmissivities. This multi-step inverse framework provides a means of including temperature profiles to image fracture hydraulic properties and connectivity. We test the proposed approach with field data obtained from the Ploemeur (N.W. France) fractured rock aquifer, where the full temperature tomography experiment was carried out between three 100 m depth boreholes 10 m apart. We identified several transmissive fractures and their connectivity which correspond to known fractures and corroborate well with independent information, including available borehole flowmeter tests and geophysical data. Hence, although indirect, temperature tomography appears to be a promising approach for characterizing connectivity patterns and transmissivities of the main flow paths in fractured rock. [less ▲]

Detailed reference viewed: 18 (8 ULg)