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Affichage de 4741 à 4750 sur 5676

  • Thèse

Experimental study of flow behaviour and thermal loads in dual bell nozzles, Étude expérimentale de l'écoulement et des charges thermiques dans une tuyère dual bell

Chloé Génin

The nozzle are currently presenting the most promising optimisation possibilities to supply the increasing needs of the aerospace industry. The dual bell nozzles allow the altitude adaptation of the flow. The inflection forces the flow to a stable and symmetrical separation, gencrating an optimised…, Les tuyères sont actuellement le sous-système présentant les possibilités d'optimisation les plus prometteuses pour répondre aux besoins toujours croissants de l'industrie aérospatiale. Les tuyères dual bell permettent une adaptation à l'altitude. L'écoulement est forcé à…

Engineering Sciences [physics]. Université de Valenciennes et du Hainaut-Cambrésis, 2012. English. ⟨NNT : 2010VALE0004⟩. ⟨tel-03003250⟩

  • Article dans une revue

Hybrid approaches for the two-scenario max-min knapsack problem

Saïd Hanafi, Raïd Mansi, Christophe Wilbaut, Arnaud Fréville

In this paper, we deal with the two-scenario max-min knapsack (MNK) problem. First, we consider several formulations of MNK as a mixed integer programming problem. Then, we propose a hybrid method as an alternative to solve the MNK exactly. The approach combines relaxation technique and the…

International Transactions in Operational Research, 2012, 19, pp.353 - 378. ⟨10.1111/j.1475-3995.2011.00836.x⟩. ⟨hal-03723733⟩

  • Thèse

Contribution à la formalisation et à l'identification de la stabilité humaine au regard de la sécurité : application aux transports guidés, Contribution to the characterization and identification of human stability in terms of security : application to guided transport

Philippe Richard

Le travail de la thèse propose une contribution originale basée sur le concept de stabilité humaine par l’identification des risques associés dans le cadre de l’évaluation de la sécurité du système. Dans une première partie, les difficultés à prendre en compte les facteurs humains dans les études…, The work of the thesis presents an original contribution based on the concept of human stability by identifying the associated risks as part of the safety system assessment. In a first part, the difficulties to take into account human factors in safety studies are highlighted and definitions of new…

Automatique. Université de Valenciennes et du Hainaut-Cambrésis, 2012. Français. ⟨NNT : 2012VALE0002⟩. ⟨tel-03416367⟩

  • Article dans une revue

Decision support systems for air traffic controllers based on the analysis of their decision-making processes

David Annebicque, Igor Crevits, Thierry Poulain, Serge Debernard, Patrick Millot

The growth of air traffic generates a multitude of data and parameters that makes it increasing difficult for air traffic controllers to choose rapidly and safely what to decide. The study of air-traffic control of full or partial automation over the past years highlights the need for better tools…

International Journal of Advanced Operations Management, 2012, 4 (1/2), pp.85. ⟨10.1504/IJAOM.2012.045892⟩. ⟨hal-02112907⟩

  • Chapitre d'ouvrage

Intelligent Transportation Systems

Mikael Desertot, Sylvain Lecomte, Christophe Gransart, Thierry Delot

Nowadays, vehicles, more specifically cars, are among the most sophisticated tools that are available to us. In fact, car today is a mix of computing involving multiple processors (vehicles are using processors that are more and more powerful and capable of more complex calculations), mechanics (…

Gaëlle Calvary; Thierry Delot; Jean-Yves Tigli. Computer Science and Ambient Intelligence, JOHN WILEY, pp.285-306, 2012, Computer engineering series, 978-1-118-57815-5. ⟨hal-00929735⟩

  • Communication dans un congrès

Traffic Behavioral simulation in urban and suburban : Representation of the drivers' environment

Feirouz Ksontini, Stéphane Espie, Zahia Guessoum, René Mandiau

The aim of this paper is to improve the validity of traffic simulations in urban and suburban fields, with a better consideration of the driving context and driver behavior in terms of anticipation of positioning on the lanes and occupation of space. Our model is based on a multi-agent approach and…

10th International Conference on Practical Applications of Agents and Multi-Agent Systems : PAAMS 2012, Mar 2012, Salamanca, Spain. pp.115-125, ⟨10.1007/978-3-642-28786-2_13⟩. ⟨hal-00876460⟩

  • Communication dans un congrès

A cooperative scheme to aggregate spatio-temporal events in VANETs

Dorsaf Zekri, Bruno Defude, Thierry Delot

Today, thanks to vehicular networks, drivers may receive useful information produced or relayed by neighboring sensors or vehicles (e.g., the location of an available parking space, of a traffic congestion, etc.). In this paper, we address the problem of providing assistance to the driver when no…

IDEAS '12 : 16th International Database Engineering & Applications Symposium, Aug 2012, Prague, Czech Republic. pp.100-109, ⟨10.1145/2351476.2351488⟩. ⟨hal-00737675⟩

  • Article dans une revue

Quasi-static and dynamic behaviour of the bone structures with fine geometric and materials modelling aspects

Olivier Mayeur, Grégory Haugou, Fahmi Chaari, Rémi Delille, Pascal Drazetic, Eric Markiewicz

The principle aim of this study is to highlight the influence of velocity on mechanical responses of cortical bones. Quasi-static tests are performed on cubic samples from bovine femurs in order to highlight the anisotropic effect of cortical structure. Thanks to the Hopkinson bars technique, a set…

EPJ Web of Conferences, 2012, 26, ⟨10.1051/epjconf/20122603008⟩. ⟨hal-01654665⟩

  • Article dans une revue

Finite element modelling of orthogonal cutting: sensitivity analysis of material and contact parameters

Michel Watremez, Damien Méresse, Laurent Dubar, Julien Brocail

This paper presents a finite element model of orthogonal cutting developed with Abaqus/explicit software. An Arbitrary Lagrangian-Eulerian (ALE) formulation is used to predict chip formation, temperature, chip-tool contact length, chip thickness, and cutting forces. This numerical model makes…

International Journal of Simulation and Process Modelling, 2012, 7 (4), pp.262. ⟨10.1504/IJSPM.2012.049820⟩. ⟨hal-02372529⟩

  • Communication dans un congrès

Graphical Controls Based Environment for User Interface Evaluation

Selem Charfi, Abdelwaheb Trabelsi, Houcine Ezzedine, Christophe Kolski

For more than two decades, the HCI community has elaborated numerous tools for user interface evaluation. Although the related tools are wide, the evaluation remains a difficult task. This paper presents a new approach for user interface evaluation. The proposed evaluation process focuses on…

4th International Conference on Human-Centered Software Engineering (HCSE), Oct 2012, Toulouse, France. pp.360-367, ⟨10.1007/978-3-642-34347-6_28⟩. ⟨hal-01556809⟩