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Affichage de 1231 à 1240 sur 1999

Article dans une revue

Behaviour of flow dynamics over an asymmetrical deep cavity at high reynolds numbers

Denis Cornu, Laurent Keirsbulck, Camila Chovet, Marc Lippert, Franck Kerhervé, Fethi Aloui

This paper presents an experimental study, based on the geometry of a cavity, about the flow effects using quantitative particle image velocimetry (PIV) and, local and instantaneous pressure measurements. Three configurations of rectangular deep cavities were investigated: symmetric and asymmetric…

Civil-Comp Proceedings, 2016, 110, ⟨10.4203/ccp.110.59⟩. ⟨hal-03668719⟩

Article dans une revue

Relationship between brightness and roughness of polypropylene abraded surfaces

Adrien van Gorp, Maxence Bigerelle, Denis Najjar

This article proposes to analyze the relation between gloss and roughness of surfaces of polypropylene samples abraded at different magnitudes. Experiments consist of mechanical polishing at different grades, roughness profiles measurement, and specular light reflectometry with three incidence…

Polymer Engineering and Science, 2016, 56 (1), pp.103 - 117. ⟨10.1002/pen.24197⟩. ⟨hal-01714922⟩

Article dans une revue

FMRI Data Analysis Using Dempster-Shafer Method with Estimating Voxel Selectivity by Belief Measure

Abdelouahab Attia, Abdelouahab Moussaoui, Abdelmalik Taleb-Ahmed

In the functional Magnetic Resonance Imaging (fMRI) data analysis, detecting the activated voxels is a challenging research problem where the existing methods have shown some limits. We propose a new method wherein brain mapping is done based on Dempster-Shafer theory of evidence (DS) that is a…

International journal of advanced computer science and applications (IJACSA), 2016, 7 (1), pp.316-324. ⟨10.14569/IJACSA.2016.070143⟩. ⟨hal-03427002⟩

Article dans une revue

Less is more: Basic variable neighborhood search for minimum differential dispersion problem

Nenad Mladenovic, Raca Todosijević, Dragan Urošević

In this paper, we propose a basic variable neighborhood search for solving Minimum differential dispersion problem using only the swap neighborhood structure in both descent (intensification) and shaking (diversification) steps. It has become a trend in the metaheuristic literature to use hybrid…

Information Sciences, 2016, 326, pp.160-171. ⟨10.1016/j.ins.2015.07.044⟩. ⟨hal-03400764⟩

Article dans une revue

Use of the PIV and Electrochemical Techniques to Experimentally Characterize the Couette-Taylor- Poiseuille Flow Instabilities

Wafik Abassi, Fethi Aloui, Sassi Ben Nasrallah, Jack Legrand

The Taylor-Couette problem is a fundamental model in bifurcation theory and hydrodynamic stability. The inner cylinder rotation generates a flow pattern known by a transition to turbulence through a sequence of successive hydrodynamic instabilities. The effect of an imposed axial flow on the…

Journal of Applied Fluid Mechanics, 2016, 9 (1), pp.59 - 68. ⟨10.36884/jafm.9.SI1.25910⟩. ⟨hal-01527258⟩

Article dans une revue

Scheduling operating theatres: Mixed integer programming vs. constraint programming

Tao Wang, Nadine Meskens, David Duvivier

The daily scheduling of an operating theatre is a highly constrained problem. In addition to standard scheduling constraints, many additional constraints on human and material resources encountered in real life should be taken into account. These constraints concern the priority of operations, the…

European Journal of Operational Research, 2015, 247 (2), pp.401 - 413. ⟨10.1016/j.ejor.2015.06.008⟩. ⟨hal-01787907⟩

Article dans une revue

Scalable row-based parallel H.264 decoder on embedded multicore processors

Elias Michel Baaklini, Santhosh Kumar Rethinagiri, Hassan Sbeity, Smail Niar

Multimedia applications are present in most mobile hand-held devices, which are still equipped with limited battery resources. The H.264 standard is currently dominating the video compression world. H.264 has high computational requirements in terms of memory, energy, and time. Many techniques…

Signal, Image and Video Processing, 2015, 9 (S1), pp.57-71. ⟨10.1007/s11760-014-0633-8⟩. ⟨hal-03578528⟩

Article dans une revue

Comparison Based on Exergetic Analyses of Two Hot Air Engines: A Gamma Type Stirling Engine and an Open Joule Cycle Ericsson Engine

Houda Hachem, Marie Creyx, Ramla Gheith, Eric Delacourt, Céline Morin, Fethi Aloui, Sassi Ben Nasrallah

In this paper, a comparison of exergetic models between two hot air engines (a Gamma type Stirling prototype having a maximum output mechanical power of 500 W and an Ericsson hot air engine with a maximum power of 300 W) is made. Referring to previous energetic analyses, exergetic models are set up…

Entropy, 2015, 17 (11), pp.7331-7348. ⟨10.3390/e17117331⟩. ⟨hal-03448497⟩

Article dans une revue

Thermocapillary instability in an evaporating two-dimensional thin layer film

Andriy A. Avramenko, Igor V. Shevchuk, Souad Harmand, Andrii I. Tyrinov

A novel two-dimensional model for the thermocapillary instability of a thin liquid film was developed and validated in the paper. The model incorporates a novel solution for the unperturbed velocity components and the thin film thickness (based on the boundary layer approach and balance equation)…

International Journal of Heat and Mass Transfer, 2015, 91, pp.77-88. ⟨10.1016/j.ijheatmasstransfer.2015.07.063⟩. ⟨hal-03448389⟩

Article dans une revue

RFID interactive tabletop application with tangible objects: exploratory study to observe young children’ behaviors

Sébastien Kubicki, Marion Wolff, Sophie Lepreux, Christophe Kolski

Numerous academic and industrial studies and developments concerning interactive tabletops are paving the way for new educational applications. We have developed an interactive tabletop application equipped with RFID technology. This tabletop, called TangiSense, is based on a Multi-Agent System…

Personal and Ubiquitous Computing, 2015, 19 (8), pp.1259-1274. ⟨10.1007/s00779-015-0891-7⟩. ⟨hal-01264366⟩