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Affichage de 1161 à 1170 sur 2043

Article dans une revue

Numerical and experimental study on the flow history effects of axial flow on the Couette–Taylor flow

Mostafa Monfared, Ebrahim Shirani, Mohammad Reza Salimpour, Fethi Aloui

In this research, experimental and numerical techniques are used to study the flow history effects of axial flow on the Couette–Taylor flow. For the experimental investigation, the flow is visualized using the PIV technique with reflective particles with a density of 1.62 g/cm3. Dispersed in a…

Acta Mechanica, 2016, 227 (7), pp.1999-2010. ⟨10.1007/s00707-016-1592-7⟩. ⟨hal-03446002⟩

Article dans une revue

Fundamental mode of freely decaying laminar swirling flows

François Beaubert, Halldor Pálsson, Sylvain Lalot, Isabelle Choquet, Hadrien Bauduin

A detailed study of a swirling flow in a tube is presented in the first part of the paper. A simplified analytical solution of the governing equations indicates specific modes of the tangential velocity and that the decay of the swirl effect is exponential. The problem is then solved in three…

Applied Mathematical Modelling, 2016, 40 (13-14), pp.6218-6233. ⟨10.1016/j.apm.2016.02.002⟩. ⟨hal-03443124⟩

Article dans une revue

Nested general variable neighborhood search for the periodic maintenance problem

Raca Todosijević, Rachid Benmansour, Said Hanafi, Nenad Mladenovic, Abdelhakim Artiba

In this paper we study the periodic maintenance problem: given a set of m machines and a horizon of T periods, find indefinitely repeating itself maintenance schedule such that at most one machine can be serviced at each period. In addition, all the machines must be serviced at least once for any…

European Journal of Operational Research, 2016, 252 (2), pp.385-396. ⟨10.1016/j.ejor.2016.01.014⟩. ⟨hal-03400586⟩

Article dans une revue

CFAR Detection in the Framework of Time-Frequency Analysis

Hadj Larbi Beklaouz, M'Hamed Hamadouche, Malika Mimi, Abdelmalik Taleb-Ahmed

This paper deals with the resolution improvement of metric radars and proposes a new architecture that contains the constant false alarm rate (CFAR) technique conjointly with time-frequency analysis. The clutter map (CMAP) CFAR is used to detect the existence of targets; in this case, we search if…

International Review of Electrical Engineering, 2016, 11 (3), pp.323-330. ⟨10.15866/iree.v11i3.8305⟩. ⟨hal-03426998⟩

Article dans une revue

Using fuzzy logic control approach and model reduction for solving frictional contact problems

Hai Quan Do, Franck Massa, Thierry Tison

Purpose – The purpose of this paper is to expand the previously published fuzzy logic controller for contact method to normal frictionless contact for solving mechanical frictional contact problems. The secondary aim is to integrate a reduction model for each component in contact to decrease the…

Engineering Computations, 2016, 33 (4), pp.1006-1032. ⟨10.1108/EC-11-2014-0226⟩. ⟨hal-03445607⟩

Article dans une revue

Adaptive general variable neighborhood search heuristics for solving the unit commitment problem

Raca Todosijević, Marko Mladenovic, Said Hanafi, Nenad Mladenovic, Igor Crevits

The unit commitment problem (UCP) for thermal units consists of finding an optimal electricity production plan for a given time horizon. In this paper we propose hybrid approaches which combine Variable Neighborhood Search (VNS) metaheuristic and mathematical programming to solve this NP-hard…

International Journal of Electrical Power & Energy Systems, 2016, 78, pp.873-883. ⟨10.1016/j.ijepes.2015.12.031⟩. ⟨hal-03400608⟩

Article dans une revue

Navigation Scheme with Priority-Based Scheduling of Mobile Agents: Application to AGV-Based Flexible Manufacturing System

Guillaume Demesure, Michael Defoort, Abdelghani Bekrar, Damien Trentesaux, Mohamed Djemai

This paper proposes a new navigation approach for mobile agents in AGV (Autonomous Guided Vehicles)-based flexible manufacturing system. The navigation scheme combines a scheduled motion planner and a priority-based negotiation. The scheduled motion planner ensures the product transportation while…

Journal of Intelligent and Robotic Systems, 2016, 82 (3-4), pp.495-512. ⟨10.1007/s10846-015-0273-4⟩. ⟨hal-03426957⟩

Article dans une revue

Design of Multiple-Target Tracking System on Heterogeneous System-on-Chip Devices

Guanwen Zhong, Smail Niar, Alok Prakash, Tulika Mitra

Advanced driver-assistance systems (ADAS) generally embrace heterogeneous platforms consisting of central processing units and field-programmable gate arrays (FPGAs) to achieve higher performance and energy efficiency. The multiple-target tracking (MTT) system is an important component in most ADAS…

IEEE Transactions on Vehicular Technology, 2016, 65 (6), pp.4802-4812. ⟨10.1109/TVT.2016.2546957⟩. ⟨hal-03400598⟩

Article dans une revue

Switched control for reducing impact of vertical forces on road and heavy vehicle rollover avoidance

Hocine Imine, Mohamed Djemai

The aim of the presented work consists in developing a hybrid active control system in order to reduce the impact of vertical forces on the roads and therefore to avoid the rollover of heavy vehicle. The controller is based on super twisting algorithm. Two states are then fixed which correspond to…

IEEE Transactions on Vehicular Technology, 2016, 65 (6), pp.4044-4052. ⟨10.1109/TVT.2015.2470090⟩. ⟨hal-01215829⟩

Article dans une revue

Characterization of the hot-working behavior of a Cu-Ni-Si alloy

Julie Chalon, Jean-Dominique Guerin, Laurent Dubar, André Dubois, Eli Saúl Puchi-Cabrera

Cu-Ni-Si alloys and their variants constitute very important engineering materials, which have found a number of applications in different fields, as potential substitutes of the toxic Cu-Be alloys traditionally employed for the manufacture of different parts and components. However, the hot-…

Materials Science and Engineering: A, 2016, 667, pp.77-86. ⟨10.1016/j.msea.2016.04.061⟩. ⟨hal-03445645⟩