Publications

Affichage de 3891 à 3900 sur 5525

COMM

Optimizing the periodic maintenance problem using General Variable neighbourhood search

Raca Todosijević, Rachid Benmansour, Said Hanafi, Nenad Mladenovic, Michel Vasquez

In this paper we study the periodic maitenance problem (PMP). The problem is to determine, for a set of m machines and a period of T units of time, a maintenance schedule which will be indefinitely repeating itself. At each period, at most one machine can be serviced. However for any cycle, all the…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946394⟩

COMM

Heuristiques hybrides pour le problème de la distribution équitable

Christophe Wilbaut, Said Hanafi, Boukthir Haddar, Mahdi Khemakhem, Arnaud Fréville

Dans cet article nous nous intéressons à la résolution du problème de la distribution équitable qui est une extension du problème du sac-à-dos (SAD) dans laquelle un ensemble d'objets est soumis à une contrainte de ressource, comme dans le SAD. Cependant, les objets sont regroupés en…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946429⟩

COMM

Application of a Co-evolutionary Genetic Algorithm to solve the Periodic Railway Timetabling Problem

Luis Diego Arenas Pimentel, Rémy Chevrier, Said Hanafi, Joaquin Rodriguez

In train operations, a timetable is used to establish the departure and arrival times for the trains at the stations or other relevant locations in the rail network. The timetable must respond to the commercial requirements of the customers, while respecting also some security and capacity…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946504⟩

COMM

Tutoriel : Variable neighbourhood and Formulation space searches: some recent advances

Nenad Mladenovic

<p>Variable neighbourhood search (VNS) and Formulation space search (FSS) are two general search strategies for solving optimization problems that follow the principle of change during the search for the better solution. In VNS, the neighbourhood structures are systematically changed, while…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946266⟩

COMM

On the complexity of robotic flow shop with transportation constraints

Nacira Chikhi, Moncef Abbas, Abdelghani Bekrar, Rachid Benmansour, Said Hanafi

Most of machine scheduling models in the literature assume that either transportation capacity of transporters for delivering jobs is unlimited or transportation times from one location to another are negligible. In this paper, we study a two stages robotic flow shop problem which is a scheduling…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946372⟩

COMM

A hybrid approach combining column generation and variable neighborhood search for the location and routing problem

Rita Macedo, Said Hanafi, Bassem Jarboui, Nenad Mladenovic, Bruna Ramos, Cláudio Alves, J.M. Valério de Carvalho

<p>The location and routing problem is an integrated problem, combining two problems of the supply chain, the location problem and the vehicle routing problem. The combination of these two important optimization problems to distribution networks can translate into considerable savings, given…

ROADEF - 15ème congrès annuel de la Société française de recherche opérationnelle et d'aide à la décision, Société française de recherche opérationnelle et d'aide à la décision, Feb 2014, Bordeaux, France. ⟨hal-00946393⟩

COMM

Decision Support System for Offers of Fleet Availability Services

André Pozzetti, Ioana Bilegan, David Duvivier, Abdelhakim Artiba, Sébastien Forato, Barbara Matrat, Sébastien D’arco

The growing competitiveness within the aeronautic industry is inspiring companies to implement and offer Performance-Based Services. Whilst not necessarily a new concept, it is relatively new to the commercial aeronautic industry and presents prime suppliers with difficulties in predicting…

The Ninth International Conference on Systems ICONS 2014, Feb 2014, Nice, France. ⟨hal-03474372⟩

THESE

Optimization of multimedia applications on embedded multicore processors, Optimisation des applications multimédia sur des processeurs multicœurs embarqués

Elias Michel Baaklini

Parallel computing is currently the dominating architecture in embedded systems. Concurrency improves the performance of the system rather without increasing the clock speed which affects the power consumption of the system. However, concurrency needs to be exploited in order to improve the system…, L’utilisation de plusieurs cœurs pour l’exécution des applications mobiles sera l’approche dominante dans les systèmes embarqués pour les prochaines années. Cette approche permet en générale d’augmenter les performances du système sans augmenter la vitesse de l’horloge. Grâce à cela, la…

Other. Université de Valenciennes et du Hainaut-Cambresis; Arab open university. Lebanon branch (Antelias, Liban), 2014. English. ⟨NNT : 2014VALE0004⟩. ⟨tel-01127384⟩

ART

Liquid film evaporation enhancement in a vertical annulus with preheated air flow

Rym Ben Radhia, Souad Harmand, Jean-Pierre Corriou, Sadok Ben Jabrallah

The evaporation by mixed convection of a water film falling down the inner wall of a vertical annulus was studied numerically. The outer wall was assumed to be insulated and dry. A counter-current flow of preheated, dry air was blown between two concentric cylinders. This air flow was preheated at…

Desalination and Water Treatment, 2014, 52 (7-9), pp.1654-1661. ⟨10.1080/19443994.2013.806999⟩. ⟨hal-01276060⟩

ART

Experimental investigation on the feasibility of heat pipe cooling for HEV/EV lithium-ion battery

Thanh-Ha Tran, Souad Harmand, Bernard Desmet, Sebastien Filangi

In this paper, the use of flat heat pipe as an effective and low-energy device to mitigate the temperature of a battery module designed for a HEV application was investigated. For this purpose, nominal heat flux generated by a battery module was reproduced and applied to a flat heat pipe cooling…

Applied Thermal Engineering, 2014, 63 (2), pp.551-558. ⟨10.1016/j.applthermaleng.2013.11.048⟩. ⟨hal-03624730⟩