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Affichage de 461 à 470 sur 977

  • Article dans une revue

Friction coefficients in cold forging: A global perspective

Peter Groche, Philipp Kramer, Niels Bay, Peter Christiansen, Laurent Dubar, K. Hayakawa, Chengliang Hu, K. Kitamura, Philippe Moreau

Worldwide, at least twenty different tribological tests have been proposed for the empirical determination of friction coefficients in cold forging processes. Due to the varying test setups, means of measurement, and level of abstraction, the comparability of the outcomes is, however, disputable....

CIRP Annals - Manufacturing Technology, 2018, 67 (1), pp.261-264. ⟨10.1016/j.cirp.2018.04.106⟩. ⟨hal-03450016⟩

  • Article dans une revue

Reactive Power Dispatch Optimization with Voltage Profile Improvement Using an Efficient Hybrid Algorithm

Zahir Sahli, Abdelatif Hamouda, Abdelghani Bekrar, Damien Trentesaux

This paper presents an efficient approach for solving the optimal reactive power dispatch problem. It is a non-linear constrained optimization problem where two distinct objective functions are considered. The proposed approach is based on the hybridization of the particle swarm optimization method...

Energies, 2018, 11 (8), pp.2134. ⟨10.3390/en11082134⟩. ⟨hal-03428168⟩

  • Article dans une revue

A prescribed anisotropic mean curvature equation modeling the corneal shape: A paradigm of nonlinear analysis

Chiara Corsato, Colette De Coster, Franco Obersnel, Pierpaolo Omari, Alessandro Soranzo

In this paper we survey, complete and refine some recent results concerning the Dirichlet problem for the prescribed anisotropic mean curvature equation (Equation Presented), in a bounded Lipschitz domain Ω ⊂ RN, with a, b > 0 parameters. This equation appears in the description of the geometry...

Discrete and Continuous Dynamical Systems - Series S, 2018, 11 (2), pp.213-256. ⟨10.3934/dcdss.2018013⟩. ⟨hal-03135736⟩

  • Communication dans un congrès

Performance indicators nomenclatures for decision making in sustainable conditions based maintenance

Olivier Sénéchal

The maintenance activity is by nature an important lever for action on the sustainability of production systems. To implement new performance indicators in this perspective involves to use data, information, and knowledge missing in the traditional maintenance environments, or at least not...

16th IFAC Symposium on Information Control Problems in Manufacturing, INCOM 2018, Jun 2018, Bergamo, Italy. pp.1137-1142, ⟨10.1016/j.ifacol.2018.08.438⟩. ⟨hal-03409344⟩

  • Communication dans un congrès

Modéliser un demi-cercle et autres questions de poids nuls

Jean-Paul Becar, Laurent Fuchs, Lionel Garnier

Les courbes de Bézier rationnelles avec des points pondérés peinent à prendre en compte certaines situations élémentaires comme la modélisation d'un demi-cercle avec une courbe de degré 2. Dans cet article nous mon-trons comment l'utilisation de courbes de Bézier rationnelles avec des...

JFIG 18, Université de Poitiers, Nov 2018, POITIERS, France. ⟨hal-02508960⟩

  • Article dans une revue

Mechanical Properties, Structure, Bioactivity and Cytotoxicity of Bioactive Na-Ca-Si-P-O-(N) Glasses

Assia Mabrouk, Ahmed Bachar, Ali Atbir, Claudine Follet-Houttemane, Cyrille Albert-Mercier, Arnaud Tricoteaux, Anne Leriche, Stuart Hampshire

Bioactive glasses are able to bond to bone through formation of carbonated hydroxyapatite in body fluids. However, because of their poor strength their use is restricted to non-load-bearing applications. The effects of nitrogen addition on the physical and mechanical properties and structure of...

Journal of the mechanical behavior of biomedical materials, 2018, 86, pp.284-293. ⟨10.1016/j.jmbbm.2018.06.023⟩. ⟨hal-04351733⟩

  • Communication dans un congrès

Sensibiliser les étudiants du Master Audiovisuel et Multimédia à la veille technologique

Caroline Guillaume-Blaydes, Marie Zwingelstein, François-Xavier Coudoux, Michel Pommeray, Philippe Thomin, Nicolas Vieville, Willy Yvart

Depuis 10 ans le département Développement, Recherche, Enseignement en Audiovisuel et Multimédia (DREAM) de l’université Polytechnique des Hauts-de-France (Valenciennes – France) participe chaque année au programme IABM Student Awards (International trade Association for Broadcast & Media...

13ème Colloque Enseignement des Technologies et des Sciences de l'Information et des Systèmes, CETSIS 2018, Oct 2018, Fès, Maroc. pp.201-206. ⟨hal-03549543⟩

  • Communication dans un congrès

Functional and Corticomuscular Changes Associated with Early Phase of Motor Training

Sylvain Cremoux, Dimitri Elie, Cecilie Rovsing, Helene Rovsing, Mads Jochumsen, Heidi Haavik, Imran K. Niazi

This study aimed to evaluate the corticomuscular changes associated with motor training. We quantified functional and corticomuscular changes during a four-days motor training. Results revealed better functional performance and increased magnitude of corticomuscular coherence in the 8–13 Hz...

4th International Conference on NeuroRehabilitation, Oct 2018, Pisa, Italy. ⟨10.1007/978-3-030-01845-0_151⟩. ⟨hal-03462927⟩

  • Article dans une revue

Local stabilization of discrete-time TS descriptor systems

Zsofia Lendek, Gábor Nagy, Jimmy Lauber

Descriptor models are naturally obtained from the Euler–Lagrange modeling approach to mechanical systems. Since the underlying system is nonlinear, global stabilization and/or tracking is possible only in a limited number of cases. Therefore, we develop conditions for local stabilization and...

Engineering Applications of Artificial Intelligence, 2018, 67, pp.409-418. ⟨10.1016/j.engappai.2017.09.006⟩. ⟨hal-03428157⟩

  • Communication dans un congrès

Estimation géométrique des tangentes à partir de coniques et algèbre géométrique. Exemples sous GAviewer

Jean-Paul Becar, Laurent Fuchs, Lionel Garnier

Les nombres complexes sont fortement liés à la géométrie plane. Si les rotations, symétries et similitudes planes parmi d'autres s'expriment aisément à l'aide des complexes, le mérite de ce mode de représentation prend tout son sens dans toutes les compositions de ces transformations...

GTMG 2018, 2018, AIX EN PROVENCE, France. ⟨hal-02508953⟩