University of Marne-la-Vallée

About: University of Marne-la-Vallée is a based out in . It is known for research contribution in the topics: Estimator & Context (language use). The organization has 831 authors who have published 1855 publications receiving 55316 citations.

International bargaining in the presence of global environmental change

Abstract: This model deals with the greenhouse effect, that is to say with a problem of international pollution. Through a description of the bargaining process, it aims to determine the different forms that may be taken by cooperation agreements between the countries involved. We demonstrate, in particular, that under some conditions it is always possible for the countries to reach an agreement. Such agreements are the work of a group of so-called ‘leader countries’ characterized by their commitment in favour of cooperation. These leader countries use transfers to induce other countries to join them, but they can be insufficiently attractive to convince all the countries to cooperate. So as we show in the discussion, the cooperation is not necessarily total. Therefore, the key of a common problem can be a partial cooperation and not necessarily a common cooperation.

Jacobians of Symmetric Polynomials

Abstract: We give the Jacobian of any family of complete symmetric functions, or of power sums, in a finite number of variables.

Advanced quality of services with security integration in wireless sensor networks

Abstract: In this paper, we focus on the coexistence between security and quality of services QoS guarantee in wireless sensor networks. The idea is to integrate the security services: authentication, integrity, confidentiality, and non-repudiation with QoS guarantee. In literature, the major proposed solutions consider QoS and security separately. In addition, it has been shown that it is difficult to offer the end-users multiple levels of security while offering a high level of QoS, because security and QoS are opposite parameters. To tackle this main issue, we propose a new model based on proportional integral derivative controller in order to dynamically select the security level adapted to QoS requirements while considering the energy consumption. The stability parameters in terms of security level and QoS are taken into account by using the principle of proportional integral derivative which is based on the past parameters history, the current system state present, and the predictable system change future. In order to evaluate the proposed model, we consider the case of routing protocol, and we introduce this model into the well-known ad-hoc on-demand distance vector AODV protocol called QwS-AODV protocol. Unlike the classical secure AODV, the QwS-AODV protocol aims at adding or removing security services dynamically according to the network performance. Moreover, the validation and the evaluation of the proposed solution are carried out by simulation. The performance evaluation is presented with different network parameters such as throughput, delay, energy consumption, and security services. In addition, the comparison with a classical secure AODV is carried out, and the results obtained with the simulation illustrate that the security is always ensured with lower costs in terms of QoS and energy consumption. Copyright © 2014 John Wiley & Sons, Ltd.

Operational semantics for formal tensorial calculus

Abstract: With a view towards models of quantum computation, we define a functional language where all functions are linear operators by construction. A small step operational semantic (and hence an interpreter/simulator) is provided for this language in the form of a term rewrite systems. The linear-algebraic -calculus hereby constructed is linear in a different (yet related) sense to that, say, of the linear -calculus. These various notions of linearity are discussed in the context of quantum programming languages .