Le financement des centres de santé intégrés en Belgique

Conference given outside the academic context (2003)

Crème, beurre et lait fermenté.

Conference given outside the academic context (2003)

L'écriture de scénario en question: le cas du documentaire

Conference given outside the academic context (2003)

La place du psychologue dans les maladies cardiovasculaires.

Conference given outside the academic context (2003)

Consistent Vibration Analysis of Electrostatically Coupled Structures: Application to Microsystems

Conference given outside the academic context (2003)

Analysing the vibration of microsystems is a fundamental issue in the design of sensors and actuators. The state of the art currently consists in using staggered procedures based on the iteration between ... [more ▼]

Analysing the vibration of microsystems is a fundamental issue in the design of sensors and actuators. The state of the art currently consists in using staggered procedures based on the iteration between a structural model loaded by electrostatic forces and an electrostatic model defined on a domain following the deformation of the structure. Staggered iteration then leads to a static equilibrium position. Performing a perturbation analysis around the static equilibrium to evaluate the tangent stiffness for every degree of freedom leads to very high computing costs. Therefore only the tan-gent stiffness associated with assumed modes (typically the purely structural modes) is computed. Such a procedure can lead to important inaccuracies in the estimation of eigenfrequencies for designs where the electrostatic coupling is not quasi-uniform. In our work, we have developed a fully coupled electro-mechanical formulation that allows to find static equilibrium positions in a non-staggered way and which provides fully consistent tangent stiffness matrices for vibration analysis. The efficiency of the approach will be illustrated on modes of micro-electromechanical devices. The coupled electromechanical modes obtained in the vicinity of equilibrium positions can be significantly different from the approximations obtained using a structural reduction at forehand. Numerical results are checked against analytical results. The application examples highlight the fact that the strongly coupled formulation proposed here allows consistent vibration analysis of the system and yields more accurate eigenmodes and frequencies than the classical perturbed assumed mode approach. [less ▲]

Médias et luttes sociales en Belgique

Conference given outside the academic context (2003)

Le monument à Léopold Ier

Conference given outside the academic context (2003)

Analyse sensorielle : principes de base.

Conference given outside the academic context (2003)

"Etre créé" et "venir à l'existence". Réflexions sur l'Etre en Egypte ancienne

Conference given outside the academic context (2003)

Les médias : Quel(s) Pouvoir(s) ?

Conference given outside the academic context (2003)

Séminaire d’anthropologie politique : le prêtre, le prophète et le sorcier au Congo-Kinshasa

Conference given outside the academic context (2003)

Médias et pouvoir économique en Belgique

Conference given outside the academic context (2003)

Les évolutions de l’offre en logement : de la désurbanisation au renouvellement urbain

Conference given outside the academic context (2003)

Télé-réalité, télé poubelle ou télé moderne ?

Conference given outside the academic context (2003)

Atelier d'éducation aux médias

"Apprentissage et enseignement des langues"

Conference given outside the academic context (2003)

Modeling of Electro-Mechanical Coupling Problem using the Finite Element Formulation

Conference given outside the academic context (2003)

A modeling procedure is proposed to handle strong electro-mechanical coupling appearing in micro-electromechanical systems (MEMS). The finite element method is used to discretize simultaneously the ... [more ▼]

A modeling procedure is proposed to handle strong electro-mechanical coupling appearing in micro-electromechanical systems (MEMS). The finite element method is used to discretize simultaneously the electrostatic and mechanical fields. The formulation is consistently derived from variational principles based on the electromechanical free energy. In classical weakly coupled formulations staggered iteration is used between the electrostatic and the mechanical domain. Therefore, in those approaches, linear stiffness is evaluated by finite differences and equilibrium is reached typically by relaxation techniques. The strong coupling formulation presented here allows to derive exact tangent matrices of the electro-mechanical system. Thus it allows to compute non-linear equilibrium positions using Newton-Raphson type of iterations combined with adaptive meshing in case of large displacements. Furthermore, the tangent matrix obtained in the method exposed in this paper greatly simplifies the computation of vibration modes and frequencies of the cou pled system around equilibrium configurations. The non-linear variation of frequencies with respect to voltage and stiffness can be then be investigated until pull-in appears. In order to illustrate the effectiveness of the proposed formulation numerical results are shown first for the reference problem of a simple flexible capacitor, then for the model of a micro-bridge. [less ▲]

Diagnostic et prise en charge de la maladie d'Alzheimer

Conference given outside the academic context (2003)

La phonologie et la mémoire en classe de français langue seconde

Conference given outside the academic context (2003)

Le film noir en question

Conference given outside the academic context (2003)

Lire ou ne pas lire, état de la question.

Conference given outside the academic context (2003)

Possibilités de revitalisation des arbres urbains

Conference given outside the academic context (2003)

In our cities, trees must face many root stress. The most current are: •The chronic drought, bound to the narrowness of the plantation holes, to the packing of soil, to the asphalt cover of the ... [more ▼]

In our cities, trees must face many root stress. The most current are: •The chronic drought, bound to the narrowness of the plantation holes, to the packing of soil, to the asphalt cover of the surroundings ; •The asphyxic conditions, due to the same reasons ; •The chemical factors: inadequate pH, high salinity, deficiencies in nutrient elements, toxicity of others…; •The human aggressions: vandalism, injuries due to public works,… In spite of the diversity of the reasons, several morpho-physiological consequences are similar, notably on the depression of mineral nutrition and of water balance. Consequently, the proposed are aimed at the remediation of these effects. They are based on the correction of mineral deficiencies by injections of nutrient solutions, on the improvement of the biologic fertility by mycorrhiza inoculations, or on the aeration of soil structure. Some technics combine these different treatments. [less ▲]

Pas vu, pas pris

Conference given outside the academic context (2003)

Merleau-Ponty : philosophie et peinture (l'approche de Cézanne)

Conference given outside the academic context (2003)

Use of Whole-Field Displacement Measurements for Model Updating of Blades

Conference given outside the academic context (2003)

Non-contacting measurement techniques such as modal holographic interferometry look very promising for finite element (F.E.) model updating or error localization of plate-like structures in the field of ... [more ▼]

Non-contacting measurement techniques such as modal holographic interferometry look very promising for finite element (F.E.) model updating or error localization of plate-like structures in the field of structural dynamics. The purpose of this work is to investigate a way to better exploit the high spatial resolution of optical techniques in order to correct FE meshing discretization errors and/or model parameter errors. The key idea developed in this paper is to calculate successively two error estimators using only measurement data. The experimental field is first used for the detection of singular regions corresponding to high deformation (or stress) gradients. This estimator indicates the regions where a mesh refinement is required. Thus a second estimator is calculated and used for parameter error detection. [less ▲]

Comparison of the Severity of Standards Used for the Vibration Testing of Luminaires

Conference given outside the academic context (2003)

Conduite diagnostique des dermatoses prurigineuses des rongeurs et lagomorphes de compagnie : illustration à partir de cas cliniques

Conference given outside the academic context (2003)

Conduite diagnostique des dermatoses prurigineuses des rongeurs et lagomorphes de compagnie : illustration à partir de cas cliniques

Conference given outside the academic context (2003)

Politique et structures mises en place en Région wallonne pour la gestion et la promotion de la qualité

Conference given outside the academic context (2003)

L’information sous contrôle : médias et pouvoir économique en Belgique

Conference given outside the academic context (2002)

La valorisation de la betterave fourragère dans l'alimentation de la vache laitière et du bétail à l'engraissement

Conference given outside the academic context (2002)

La place de la phonologie et de la métaphonologie dans l’alphabétisation en langue seconde

Conference given outside the academic context (2002)

The influence of Space Weather and of the ionosphere on Global Navigation Satellite Systems

Conference given outside the academic context (2002)

Quelle est la place de la mémoire dans l'apprentissage du français langue seconde

Conference given outside the academic context (2002)

La valoristion des oléo-protéagineux dans l'alimentation animale à la ferme

Conference given outside the academic context (2002)

Utilisation des céréales en alimentation bovine

Conference given outside the academic context (2002)

Les aurores dans le système solaire

Conference given outside the academic context (2002)

Stand und Aufgaben der Forschung zur antiken Ethnographie

Conference given outside the academic context (2002)

GPS : A tool to study the Earth Atmosphere

Conference given outside the academic context (2002)

L'approche individuelle de l'écologie comportementale de la truite commune Salmo trutta. Une nécessité pour la compréhension et la gestion des populations.

Conference given outside the academic context (2002)

L'amélioration de la qualité de l'alimentation bovine en vue de la réduction des émissions de méthane

Conference given outside the academic context (2002)

Mobilité durable et activités économiques : adéquation entre profils de mobilité et profil d’accessibilité des lieux

Conference given outside the academic context (2002)

La rééducation vocale

Conference given outside the academic context (2002)

"L'enseignement du FLES en question"

Conference given outside the academic context (2002)

Les résultats de l'enquête Pisa 2000 : Au-delà des performances des élèves, un système éducatif se profile.

Conference given outside the academic context (2002)

Construction d'habitations en bois. Trois techniques différentes

Conference given outside the academic context (2002)

Le développement durable

Conference given outside the academic context (2002)

Présentation des résultats de l'étude portant sur les pratiques et les attitudes des jeunes francophones par rapport aux langues étrangères.

Conference given outside the academic context (2002)

Optimiser l'expression orale en travaillant sur les stratégies de communication (2nde partie).

Conference given outside the academic context (2002)

"L'enseignement du FLES en immersion"

Conference given outside the academic context (2002)

Le développement durable

Conference given outside the academic context (2002)