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Affichage de 1531 à 1540 sur 1999

  • Article dans une revue

Closed form solution for the collapse of polygonal thin-walled columns in the axial crushing case

Yamen Maalej, Fahmi Chaari, Bassem Zouari, Eric Markiewicz

The main objective of this paper is to propose a new closed form solution, useful in the pre-design stage, that allows one to calculate the mean load in the case of post-collapse of polygonal thin-walled columns in the axial crushing case. This model gives a rapid and accurate evolution of the…

Journal of Theoretical and Applied Mechanics, 2014, 52 (3), pp.707-718. ⟨hal-03663448⟩

  • Article dans une revue

Ternary Zero Correlation Zone Sequence Sets for Asynchronous DS-CDMA

Benattou Fassi, Ali Djebbari, Abdelmalik Taleb-Ahmed

In this paper we propose a new class of ternary Zero Correlation Zone (ZCZ) sequence sets based on binary ZCZ sequence sets construction. It is shown that the proposed ternary ZCZ sequence sets can reach the upper bound on the ZCZ sequences. The performance of the proposed sequences set in…

Communications and Network, 2014, 06 (04), pp.209-217. ⟨10.4236/cn.2014.64023⟩. ⟨hal-03644466⟩

  • Article dans une revue

Dynamic evolution of interface roughness during friction and wear processes

K. J. Kubiak, Maxence Bigerelle, T. Mathia, André Dubois, Laurent Dubar

Dynamic evolution of surface roughness and influence of initial roughness (Sa = 0.282–6.73 µm) during friction and wear processes has been analyzed experimentally. The mirror polished and rough surfaces (28 samples in total) have been prepared by surface polishing on Ti–6Al–4V and AISI 1045 samples…

Scanning, 2014, 36 (1), pp.30-38. ⟨10.1002/sca.21082⟩. ⟨hal-03470665⟩

  • Article dans une revue

Lighter tableware ceramic by controlling porosity: Effect of porosity on mechanical properties

Benjamin Verhaeghe, Christian Courtois, F. Petit, F. Cambier, Jean-Dominique Guerin, Anne Leriche, Stuart Hampshire

Reduction in weight of ceramics has been achieved by using a specific porous agent, starch, to achieve porosity ranging from 10% to 35%. Two incorporation routes of the porous agent have been investigated. For different levels of weight reduction, ceramics are characterized by microstructural…

Ceramics International, 2014, 40 (1), pp.763-770. ⟨10.1016/j.ceramint.2013.06.066⟩. ⟨hal-03448297⟩

  • Article dans une revue

Sliding subspace design based on linear matrix inequalities

Alan Tapia, Raymundo Márquez Borbόn, Miguel Bernal, Joaquín Cortez

In this work, an alternative for sliding surface design based on linear and bilinear matrix inequalities is proposed. The methodology applies for reduced and integral sliding mode control, both continuous- and discrete-time; it takes advantage of the Finsler's lemma to provide a greater degree…

Kybernetika, 2014, 50 (3), pp.436-449. ⟨10.14736/kyb-2014-3-0436⟩. ⟨hal-03663763⟩

  • Article dans une revue

Modélisation des performances d’un moteur Ericsson à cycle de joule ouvert

Marie Creyx, Eric Delacourt, Marc Lippert, Céline Morin, Bernard Desmet

The performances of an open Joule cycle Ericsson engine associated to a biomass micro-CHP unit are studied with a dynamic model impl emented with the bond graph formalis m. The dynamic phenomena of the expansion cylinder (pressure drops across the valves, th ermal losses through the cylinder wall,…

Revista Termotehnica, 2014, 1, pp.64-70. ⟨hal-03627090⟩

  • Article dans une revue

From technological acceptability to appropriation by users : Methodological steps for device assessment in road safety

Stéphanie Bordel, Alain Somat, Herî Barbeau, Françoise Anceaux, Catherine Greffeuille, Gaëlle Menguy, Marie-Pierre Pacaux-Lemoine, Peggy Subirats, Florence Http://www.Sites.Univ-Rennes2.Fr/crpcc/index.Php?rub=fiche&iduser=386 Terrade, Marie Line Gallenne

This article presents the methodology developed within the framework of the research project SARI(Automated Road Surveillance for Driver and Administrator Information). This methodology is based onthe logic of action research. The article presents the different stages in the development of…

Accident Analysis & Prevention, 2014, 67 (3396), pp.159-165. ⟨10.1016/j.aap.2014.01.016⟩. ⟨hal-01470381⟩

  • Article dans une revue

Evaluation de la performance des blocs opératoires: du modèle aux indicateurs, Assessing Hospital Operating Rooms Performance: a framework and indicators

Frédéric Bonvoisin, Sondès Chaabane, Olivier Sénéchal, Christian Tahon

Dans cet article, nous présentons une méthodologie qui combine une approche pragmatique avec un outil d'aide à la conception, visant à générer un système global d'évaluation de la performance utilisable dans les blocs opératoires. Elle comporte quatre étapes: détermination de la stratégie…, In the current environment, hospitals need to develop performance assessment tools. Our purpose is an innovative methodology for reducing the existing deficiencies in healthcare performance. This methodology combines a practical approach with a design support tool for generating a global…

Logistique & Management, 2014, 22 (4), pp.33-42. ⟨10.1080/12507970.2014.11665666⟩. ⟨hal-03518955⟩

  • Article dans une revue

L’aide à la décision comme cadre de gouvernance-innovation, Decision aiding as a framework of governance-innovation

Igor Crevits, Laurence Bonnafous, Said Hanafi

Dans cet article, nous avançons quelques arguments montrant que l’aide à la décision est utile pour soutenir une démarche d’innovation. Les concepts de l’aide à la décision permettent de caractériser finement une innovation, en la reliant à l’existant, comme une évolution et non comme une rupture.…, In this paper, we propose some arguments showing that decision aiding is useful for supporting an innovation approach. The concepts of decision aiding allow to finely characterize innovation, by linking it to the current situation, as an evolution rather than a disruption. The methodological…

Management des Technologies Organisationnelles (2014-..), 2014, 4, pp.129-139. ⟨hal-03402279⟩

  • Article dans une revue

An evidential network approach to support uncertain multiviewpoint abductive reasoning

Felipe Aguirre, Mohamed Sallak, Frédéric Vanderhaegen, Denis Berdjag

The paper proposes an approach to support human abductive reasoning in the diagnosis of a multiviewpoint system. The novelty of this work lies on the capability of the approach to treat the uncertainty held by the agent performing the diagnosis. To do so, we make use of evidential networks to…

Information Sciences, 2013, 250, pp.110-125. ⟨10.1016/j.ins.2013.07.014⟩. ⟨hal-00917053⟩