454 research outputs found
Saguy Abigail C. What’s Wrong with Fat?, Oxford University Press, 2013
No full textBossy Thibault. Saguy Abigail C. What’s Wrong with Fat?, Oxford University Press, 2013. In: Revue d’études en Agriculture et Environnement, Vol. 95, N°3, 2014. pp. 387-390
Some properties of the phonon spectra of transition metal disilicides VSi2, NbSi2, and TaSi2
No full textThe phonon spectra of metallic disilicides VSi2, NbSi2, and TaSi2 have been studied in detail by inelastic neutron scattering at 300 K and specific heat measurements between 10 K and 250 K. The specific heat calculated from the generalised phonon density of states extracted from neutron measurements is in good agreement with the measured lattice contribution to the specific heat. The properties of the phonon spectra are discussed in relation with other data reported for these isostructural and isoelectronic disilicides. (C) 2003 Elsevier Science Ltd. All rights reserved
Qu'est-c' donc ? chansonnette. Paroles de A. Bossy et L. Béraud. Musique de Albert Cattanéo
No full textStrong convergence of the exponential Euler scheme for SDEs with superlinear growth coefficients and one-sided Lipschitz drift
No full textWe consider the problem of the discrete-time approximation of the solution of a one-dimensional SDE with piecewise locally Lipschitz drift and continuous diffusion coefficients with polynomial growth. In this paper, we study the strong convergence of a (semi-explicit) exponential-Euler scheme previously introduced in Bossy et al. (2021). We show the usual 1/2 rate of convergence for the exponential-Euler scheme when the drift is continuous. When the drift is discontinuous, the convergence rate is penalised by a factor {} decreasing with the time-step. We examine the case of the diffusion coefficient vanishing at zero, which adds a positivity preservation condition and a convergence analysis that exploits the negative moments and exponential moments of the scheme with the help of change of time technique introduced in Berkaoui et al. (2008). Asymptotic behaviour and theoretical stability of the exponential scheme, as well as numerical experiments, are also presented
Strong convergence of the exponential Euler scheme for SDEs with superlinear growth coefficients and one-sided Lipschitz drift
No full textWe consider the problem of the discrete-time approximation of the solution of a one-dimensional SDE with piecewise locally Lipschitz drift and continuous diffusion coefficients with polynomial growth. In this paper, we study the strong convergence of a (semi-explicit) exponential-Euler scheme previously introduced in Bossy et al. (2021). We show the usual 1/2 rate of convergence for the exponential-Euler scheme when the drift is continuous. When the drift is discontinuous, the convergence rate is penalised by a factor {} decreasing with the time-step. We examine the case of the diffusion coefficient vanishing at zero, which adds a positivity preservation condition and a convergence analysis that exploits the negative moments and exponential moments of the scheme with the help of change of time technique introduced in Berkaoui et al. (2008). Asymptotic behaviour and theoretical stability of the exponential scheme, as well as numerical experiments, are also presented
1er février 2011-Première Présidente de la Confédération Suisse (1999)-Mme Ruth Dreifuss-Visite de la caverne expérimentale d’ATLAS avec F. Pauss, Chef des Relations internationales
No full textPhoto 1-24:Collaboration ATLAS, Ancien Porte-parole P. Jenni+F. Pauss+Experte en pédagogie S. Forster+R. Dreifuss+C. Bossy+JP Bossy, visite de la caverne ATLAS Photo 25-40:Visite du Tunnel LHC au Point
Separability and aggregation of equivalence relations
No full textWe provide axiomatic characterizations of two natural families of rules for aggregating equivalence relations: the family of join aggregators and the family of meet aggregators. The central conditions in these characterizations are two separability axioms. Disjunctive separability, neutrality, and unanimity characterize the family of join aggregators. On the other hand, conjunctive separability and unanimity characterize the family of meet aggregators. We show another characterization of the family of meet aggregators using conjunctive separability and two Pareto axioms, Pareto+ and Pareto-. If we drop Pareto-, then conjunctive separability and Pareto+ characterize the family of meet aggregators along with a trivial aggregator
The Idea of the Devil and the Problem of the Indian: the case of Mexico in the sixteenth century
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