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Affichage de 1111 à 1120 sur 1999

Article dans une revue

Social spiders optimization and flower pollination algorithm for multilevel image thresholding: A performance study

Salima Ouadfel, Abdelmalik Taleb-Ahmed

We present an empirical comparison of two new meta-heuristics SSO and FP.Real test images were used to perform thresholding using Otsu's method and Kapur's entropy.Compared algorithms were SSO, FP, PSO, BAT.Comparisons were made according to the fitness values, PSNR and SSIM.SSO shows...

Expert Systems with Applications, 2016, 55, pp.566-584. ⟨10.1016/j.eswa.2016.02.024⟩. ⟨hal-03426984⟩

Article dans une revue

Rolls wear characterization in hot rolling process

Camille Bataille, Emilie Luc, Maxence Bigerelle, Raphaël Deltombe, Mirentxu Dubar

This paper is based on the hot rolling process on stainless steels. The aim of this article is to characterize the wear of working cylinders during the hot rolling milling process. The behavior of working cylinders, used in a finishing hot rolling mill, is thus analyzed. Because of their large...

Tribology International, 2016, 100, pp.328-337. ⟨10.1016/j.triboint.2016.03.012⟩. ⟨hal-03448196⟩

Article dans une revue

Mechanical characterization of a prototype a-C:Cr,Si and its tribological behavior at high temperature

Mariana Staia, Laurent Dubar, Mirentxu Dubar, Eli Saúl Puchi-Cabrera, Alain Iost, Patrick de Baets, André Dubois

The results of the mechanical and tribological characterization of a prototype a-C:Cr, Si sputtered coating are presented. The hardness and the elastic modulus of the coated system have been determined by means of nanoindentation taking into account the actual architecture of the bi-layer coating....

Tribology International, 2016, 100, pp.242-254. ⟨10.1016/j.triboint.2016.01.048⟩. ⟨hal-03169356⟩

Article dans une revue

Strain rate effects on the compressive response of wood and energy absorption capabilities – Part A: Experimental investigations

Jérémy Wouts, Grégory Haugou, Marc Oudjene, Daniel Coutellier, Hervé Morvan

Strain rate effect on wood material is of major interest when dealing with applications dedicated to energy absorption or wood machining. To understand and evaluate the strain rate influence on the wood responses, three experimental apparatus are used in order to cover a large range of strain rates...

Composite Structures, 2016, 149, pp.315-328. ⟨10.1016/J.compstruct.2016.03.058⟩. ⟨hal-03096703⟩

Article dans une revue

Impact of Physical Activity on Alzheimer's Disease: A Randomised Controlled Study

Toulotte Claire, Caby Isabelle, Hélène Olivier, Nicolas Olivier

To study the effects of physical training on behavior and balance issues in elderly people afflicted with Alzheimer's disease. Method: Forty patients (average age: 80 years old) participated in the study. The individuals were placed into two groups: a control group, which did not participate...

Journal of Intellectual Disability - Diagnosis and Treatment, 2016, 4 (2), pp.110-116. ⟨10.6000/2292-2598.2016.04.02.4⟩. ⟨hal-03374933⟩

Article dans une revue

A Robust Observer-Based Sensor Fault-Tolerant Control for PMSM in Electric Vehicles

Suneel Kumar Kommuri, Michael Defoort, Hamid Reza Karimi, Kalyana Chakravarthy Veluvolu

This paper investigates the problem of automatic speed tracking control of an electric vehicle (EV) that is powered by a permanent-magnet synchronous motor (PMSM). A reconfiguration scheme, based on higher order sliding mode (HOSM) observer, is proposed in the event of sensor faults/failures to...

IEEE Transactions on Industrial Electronics, 2016, 63 (12), pp.7671-7681. ⟨10.1109/TIE.2016.2590993⟩. ⟨hal-03426943⟩

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

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

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⟩