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Affichage de 1271 à 1280 sur 2043

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

Spatial Resolution Correction for Electrochemical Wall-shear Stress Measurements using Rectangular Sensors

Fawzi Fadla, Rogelio Chovet, Denis Cornu, Marc Lippert, Fethi Aloui, Laurent Keirsbulck

This article is mainly motivated by the growing needs for highly resolved measurements forwall-bounded turbulent ﬂows and aims to proposes a spatial correction coefﬁcient in order toincrease the wall-shear stress sensors accuracy. As it well known for the hot wire anemometry, theﬂuctuating…

Journal of Applied Fluid Mechanics, 2016, 9 (3), pp.1309-1319. ⟨10.18869/acadpub.jafm.68.228.23945⟩. ⟨hal-03448317⟩

Article dans une revue

Some improvements for determining the hardness of homogeneous materials from the work-of-indentation

Didier Chicot, Michel Yetna N'Jock, Francine Roudet, Xavier Decoopman, Mariana H. Staia, Eli Saúl Puchi-Cabrera

In this work, the total and plastic hardness of a variety of materials were determined from the work-of-indentation. We show that by taking into account the influence of the tip defect, both the total and plastic hardness have the same values and that the hardness-load dependence is considerably…

International Journal of Mechanical Sciences, 2016, 105, pp.279-290. ⟨10.1016/j.ijmecsci.2015.11.030⟩. ⟨hal-01249912⟩

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

Finding a stabilizing switching law for switching TS models

Zsofia Lendek, Paula Raica, Jimmy Lauber, Thierry-Marie Guerra

This paper considers the stabilisation of switching nonlinear models by switching between the subsystems. We assume that arbitrary switching between two subsystems is possible once a subsystem has been active for a predefined number of samples. We use a Takagi–Sugeno representation of the models…

International Journal of Systems Science, 2016, 47 (12), pp.2762-2772. ⟨10.1080/00207721.2015.1021290⟩. ⟨hal-03430042⟩

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

An approach to the prioritization of sustainable maintenance drivers in the TBL framework

Sandro de Paula Pires, Olivier Sénéchal, Eduardo Rocha Loures, José Fernando Jimenez

The current sustainable production model is supported by the Triple Bottom Line (TBL) concept and its three dimensions: economic, environmental, and social. This paper aims to propose an approach to identify and prioritize the attributes of the TBL dimensions, extracted from the Global Reporting…

IFAC-PapersOnLine, 2016, 49 (28), pp.150-155. ⟨10.1016/j.ifacol.2016.11.026⟩. ⟨hal-03670448⟩

Article dans une revue

Hybrid DCT-DBT algorithm for medical video compression

Yassine Habchi, Mohammed Beladgham, Haouari Benlabbes, Abdelmalik Taleb-Ahmed

In this paper we present the effect of transform type in medical video compression. To obtain the maximal capabilities of storage and transmission, different compression algorithms should be compared to find the optimal technique for medical video compression. We use for compression three type of…

Electrotehnică, Electronică, Automatică, 2016, 64 (2), pp.97-103. ⟨hal-03669146⟩

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⟩

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⟩