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Institution

Conservatoire national des arts et métiers

EducationParis, France
About: Conservatoire national des arts et métiers is a education organization based out in Paris, France. It is known for research contribution in the topics: Population & Orthogonal frequency-division multiplexing. The organization has 3573 authors who have published 7127 publications receiving 141430 citations. The organization is also known as: CNAM & Conservatoire des arts et métiers.


Papers
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Journal ArticleDOI
TL;DR: In this article, a new family of PEO-based SPEs containing potassium hydroxide and water was thoroughly investigated in order to better understand the structure of these materials and to relate it with the interesting conducting properties observed.

97 citations

Journal ArticleDOI
TL;DR: In this article, a weighted residual-based approach for the numerical investigation of the interaction of fluid flow and thin flexible structures is introduced. But the method is limited to the case of strongly coupled fluid-structure systems.
Abstract: The paper introduces a weighted residual-based approach for the numerical investigation of the interaction of fluid flow and thin flexible structures. The presented method enables one to treat strongly coupled systems involving large structural motion and deformation of multiple-flow-immersed solid objects. The fluid flow is described by the incompressible Navier–Stokes equations. The current configuration of the thin structure of linear elastic material with non-linear kinematics is mapped to the flow using the zero iso-contour of an updated level set function. The formulation of fluid, structure and coupling conditions uniformly uses velocities as unknowns. The integration of the weak form is performed on a space–time finite element discretization of the domain. Interfacial constraints of the multi-field problem are ensured by distributed Lagrange multipliers. The proposed formulation and discretization techniques lead to a monolithic algebraic system, well suited for strongly coupled fluid–structure systems. Embedding a thin structure into a flow results in non-smooth fields for the fluid. Based on the concept of the extended finite element method, the space–time approximations of fluid pressure and velocity are properly enriched to capture weakly and strongly discontinuous solutions. This leads to the present enriched space–time (EST) method. Numerical examples of fluid–structure interaction show the eligibility of the developed numerical approach in order to describe the behavior of such coupled systems. The test cases demonstrate the application of the proposed technique to problems where mesh moving strategies often fail. Copyright © 2007 John Wiley & Sons, Ltd.

96 citations

Journal ArticleDOI
TL;DR: In this paper, the authors highlight four main tensions that emerge from strategists' discourses on strategizing work: social tension, cognitive tension, focus tension, and time tension.
Abstract: Until recently, the field of strategy has neglected the question of what it means to be a strategist. Based on an analysis of 68 interviews with strategy practitioners, our results highlight four main tensions that emerge from strategists' discourses on strategizing work: the social tension, the cognitive tension, the focus tension, and the time tension. This tension-based representation of strategy enables us to differentiate between three forms of strategists' subjectivities, i.e. the ways by which strategists discursively cope with tensions as a means of constituting their identity and legitimacy: the mythicizing subjectivity, the concretizing subjectivity, and the dialogizing subjectivity. Such results shed light on what a strategist is, suggesting that strategizing can be conceptualized as the art of balancing tensions and that multiple strategists' subjectivities within a paradox lens on strategy may in fact co-exist.

96 citations

Journal ArticleDOI
TL;DR: In this article, the helium and oxygen gas barrier properties of poly(lactide) were investigated as a function of stereochemistry and crystallinity degree, and it was shown that the gas permeability increased with increasing quantity of α-crystals in poly(n,l-lactides) and remained constant with increasing number of α−−−crystals.

96 citations


Authors

Showing all 3635 results

NameH-indexPapersCitations
Joshua A. Salomon107435124708
Serge Hercberg10694256791
Pilar Galan9762846782
Patrice Simon8926466332
Yuh-Shan Ho8034648242
Pierre-Louis Taberna6820934293
J. David Spence6739917671
Mathilde Touvier6532131586
Sébastien Czernichow6427414654
Emmanuelle Kesse-Guyot5733810914
Valentin Petrov5474312127
Sandrine Bertrais531699618
Paco Bustamante522959136
Khaled Ezzedine503138939
Arnaud Fontanet5020411964
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20238
2022124
2021383
2020419
2019399
2018362