Hal-Diderot
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Santé au travail et santé du travail. Un cadre juridique pour structurer une politique de SST
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Écrire les migrations en sciences sociales : enjeux, nouveautés, perspectives
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A dynamic control method for extended arrival management using enroute speed adjustment and route change strategy
No full textInternational audienceThe continuous growth of air traffic leads to congestion in the surrounding area of airport. The optimization of the air traffic in this area requires the improvement of management strategies, especially for the arrival air traffic. SESAR has proposed the concept of Extended-Arrival MANagement (E-AMAN), which aims to plan the arrival streams from an earlier stage in order to achieve delay absorption and earlier planning in the en-route phases of flights. Based on this concept, we address a dynamic/on-line air traffic control problem to provide control decisions for flights in order to achieve safety and efficiency during arrival. The dynamic feature is realized by periodically updating the flight information for aircraft trajectory predictions. Sub-problems corresponding to each information update are established. The objective of this problem is to minimize the weighted sum of route congestion and the conflict resolution workload in the enroute segment, and the number of conflicts in the TMA (Terminal Maneuvering Area). A dynamic weight assignment approach is applied for ensuring that as an aircraft get closer to the TMA, its weight for TMA metrics increases accordingly. A case study based on the arrival traffic of the Paris Charles de Gaulle (CDG) airport is investigated by using a meta-heuristic simulated annealing algorithm combined with the rolling horizon approach. Final results are analyzed in terms of the reduction of concerned safety issues, final control decision distribution, and the time transferred through enroute decision change
From a Siloed Regulation to a Holistic Approach ? Labour and Environnemental Sustainability Under EU Law, Italan Law Journal, Vol. 8, p. 683
No full textInternational audienceDrawing on a progressive interpretation of sustainable development, this article reviews, contrasts and analyses channels for interaction and integration between labour and environmental sustainability in two EU normative domains: social policy and environment policy. While a siloed approach is still evident in both domains, with very few exceptions, recent EU legislation on the economic pillar of sustainability has promoted horizontal policies on labour and the environment. Social and environmental clauses have been enacted in EU financial law, public procurement law and corporate law. The analysed examples of horizontal policies toadvance labour and environmental sustainability present risks and opportunities. Arguably, the main risk is that such policies end up in accentuating rather than surmounting the competition between labour and the environment as “fictitious commodities”
Assisted discovery of optimal solution for logistics problems using ontology modeling
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SONC Optimization and Exact Nonnegativity Certificates via Second-Order Cone Programming
No full text29 pages, 7 tables, 6 figures, extended version of the article published in the proceedings of ISSAC 2020. arXiv admin note: text overlap with arXiv:1906.06179International audienceThe second-order cone (SOC) is a class of simple convex cones and optimizing over them can be done more efficiently than with semidefinite programming. It is interesting both in theory and in practice to investigate which convex cones admit a representation using SOCs, given that they have a strong expressive ability. In this paper, we prove constructively that the cone of sums of nonnegative circuits (SONC) admits an SOC representation. Based on this, we give a new algorithm for unconstrained polynomial optimization via SOC programming. We also provide a hybrid numeric-symbolic scheme which combines the numerical procedure with a rounding-projection algorithm to obtain exact nonnegativity certificates. Numerical experiments demonstrate the efficiency of our algorithm for polynomials with fairly large degree and number of variables
Interacting non-linear reinforced stochastic processes: Synchronization and no-synchronization
No full textInternational audienceRich get richer rule comforts previously often chosen actions. What is happening to the evolution of individual inclinations to choose an action when agents do interact ? Interaction tends to homogenize while each individual dynamics tends to reinforce its own position. Interacting stochastic systems of reinforced processes were recently considered in many papers, where the asymptotic behavior was proven to exhibit a.s. synchronization. We consider in this paper models where, even if interaction among agents is present, absence of synchronization may happen due to the choice of an individual non-linear reinforcement. We show how these systems can naturally be considered as models for coordination games, technological or opinion dynamics
Philosophie du handicap. Une anthologie
No full textNational audienceCet ouvrage vise à réunir un vaste ensemble de textes issus de la tradition philosophique, de l’Antiquité à nos jours, prenant pour objet ce qui est nommé, par les législations en vigueur, ou bien « incapacité » (Convention des Nations Unies de 2006 « relative aux droits des personnes handicapées ») ou bien « handicap » (loi française du 11 février 2005 « pour l’égalité des droits et des chances, la participation et la citoyenneté des personnes handicapées ») et qui se subdivise en : handicap moteur, handicap sensoriel, handicap mental, handicap psychique, handicap cognitif et polyhandicap
Privacy-Preserving Reputation Systems Based on Blockchain and Other Cryptographic Building Blocks: A Survey
No full textInternational audienceThe purpose of a reputation system is to hold the users of a distributed application accountable for their behavior. The reputation of a user is computed as an aggregate of the feedback provided by fellow users in the system. Truthful feedback is clearly a prerequisite for computing a reputation score that accurately represents the behavior of a user. However, it has been observed that users can hesitate in providing truthful feedback because, for example, of fear of retaliation. Privacy-preserving reputation systems enable users to provide feedback in a private and thus uninhibited manner. In this survey, we propose analysis frameworks for privacy-preserving reputation systems. We use these analysis frameworks to review and compare the existing approaches. Emphasis is placed on blockchain-based systems as they are a recent significant development in the area. Blockchain-based privacy-preserving reputation systems have properties, such as trustlessness, transparency, and immutability, which prior systems do not have. Our analysis provides several insights and directions for future research. These include leveraging blockchain to its full potential in order to develop truly trustless systems, to achieve some important security properties, and to include defenses against common attacks that have so far not been addressed by most current systems