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Paris West University Nanterre La Défense

EducationParis, France
About: Paris West University Nanterre La Défense is a education organization based out in Paris, France. It is known for research contribution in the topics: Population & Finite element method. The organization has 895 authors who have published 1430 publications receiving 21712 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors present a multidisciplinary reconstruction of the way Middle Stone Age people inhabited the site of Diepkloof and the way they interacted with their environment.

38 citations

Journal Article
TL;DR: In this article, the authors give an extensive overview of recent rigorous results concerning the equilibrium and non-equilibrium dynamics of the East model together with some new improvements, which is a particular one dimensional interacting particle system in which certain transitions are forbidden according to some constraints depending on the configuration of the system.
Abstract: The East model is a particular one dimensional interacting particle system in which certain transitions are forbidden according to some constraints depending on the configuration of the system. As such it has received particular attention in the physics literature as a special case of a more general class of systems referred to as kinetically constrained models, which play a key role in explaining some features of the dynamics of glasses. In this paper we give an extensive overview of recent rigorous results concerning the equilibrium and non-equilibrium dynamics of the East model together with some new improvements. Facilitated or kinetically constrained spin (particle) models (KCSM) are interacting particle systems which have been introduced in the physics literature (FA84, FA85, JE91) to model liquid/glass transition and more generally "glassy dynamics" (see e.g. (RS03, GST)). A configuration is given by assigning to each vertex x of a (finite or infinite) connected graph G its occupation variable η(x) ∈ {0,1} which corresponds to an empty or filled site, respectively. The evolution is given by a Markovian stochastic dynamics of Glauber type. Each site with rate one refreshes its occupation variable to a filled or to an empty state with probability 1 − q or q respectively provided that the current configuration around it satisfies an a priori specified constraint. For each site x the corresponding constraint does not involve η(x), thus detailed balance w.r.t. the Bernoulli(1 − q) product measure π can be easily verified and the latter is an invariant reversible measure for the process.

38 citations

Journal ArticleDOI
TL;DR: In this paper, an original modifiability, not reducible to the single operation of writing, is initiated from the beginning as well and called this modifability "plasticity".
Abstract: The word “grammatology” literally signifies the “science of writing.” One must acknowledge, however, that this science has never existed. Derrida's book Of Grammatology proposes to elaborate and to implement just such a project. Why has this grammatological project never been accomplished? For Derrida, “writing”1 can no longer simply designate a technique for the notation of speech. A distinction should be made, then, between “narrow” and “enlarged” meanings of writing. Indeed, is the extension of the concept of writing the work of writing itself or must one suppose that the “modifiability” of the concept is not of the order of writing? This essay will propose that an original modifiability, not reducible to the single operation of writing, is initiated from the beginning as well. I call this modifiability “plasticity.” “Plasticity of writing” would then be the paradox inherent in the redefinition of writing itself that may explain the “failure” of any “grammatology.”

38 citations

Journal ArticleDOI
TL;DR: In this article, an analytical approach for the dynamic analysis of curved nanobeams using nonlocal elasticity beam theory based on Eringen formulation coupled with a higher-order shear deformation accounting for through thickness stretching is investigated.
Abstract: Here, an analytical approach for the dynamic analysis, viz., free and forced vibrations, of curved nanobeams using nonlocal elasticity beam theory based on Eringen formulation coupled with a higher-order shear deformation accounting for through thickness stretching is investigated. The formulation is general in the sense that it can be deduced to analyse the effect of various structural theories pertaining to curved nanobeams. It also includes inplane, rotary and coupling inertia terms. The governing equations derived, using Hamiltons principle, are solved in conjunction with Naviers solutions. The free vibration results are obtained employing the standard eigenvalue analysis whereas the displacement/stress responses in time domain for the curved nanobeams subjected to rectangular pulse loading are evaluated based on Newmarks time integration scheme. The formulation is validated considering problems for which solutions are available. A comparative study is done here by different theories obtained through the formulation. The effects of various structural parameters such as thickness ratio, beam length, rise of the curved beam, loading pulse duration, and nonlocal scale parameter are brought out on the dynamic behaviours of curved nanobeams.

38 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202331
2022252
2021146
2020131
2019116
201896