Paris Dauphine University

About: Paris Dauphine University is a education organization based out in Paris, France. It is known for research contribution in the topics: Context (language use) & Population. The organization has 1766 authors who have published 6909 publications receiving 162747 citations. The organization is also known as: Paris Dauphine & Dauphine.

Trends in the literature on socially responsible investment: looking for the keys under the lamppost

Abstract: In this paper, we use online search engines and archive collections to examine the popularity of socially responsible investing (SRI) in newspapers and academic journals. A simple content analysis suggests that most of the papers on SRI focus on financial performance. This profusion of research is somewhat puzzling as most of the studies used roughly the same methodology and obtained very similar results. So, why are there so many studies on SRI financial performance? We argue that the academic literature on SRI is mostly data driven: the famous ‘looking for the keys under the lamppost’ syndrome. The question of the financial performance of the SRI funds is certainly relevant but maybe too much attention has been paid to this issue, whereas more research is needed on a conceptual and theoretical ground, in particular the aspirations of SRI investors, the relationship between regulation and SRI as well as the assessment of extra-financial performances.

Asymptotics of the Fast Diffusion Equation via Entropy Estimates

Abstract: We consider non-negative solutions of the fast diffusion equation ut = Δum with m ∈ (0, 1) in the Euclidean space \({{\mathbb R}^d}\), d ≧ 3, and study the asymptotic behavior of a natural class of solutions in the limit corresponding to t → ∞ for m ≧ mc = (d − 2)/d, or as t approaches the extinction time when m < mc. For a class of initial data, we prove that the solution converges with a polynomial rate to a self-similar solution, for t large enough if m ≧ mc, or close enough to the extinction time if m < mc. Such results are new in the range m ≦ mc where previous approaches fail. In the range mc < m < 1, we improve on known results.

On the Fokker-Planck-Boltzmann equation

Abstract: We consider the Boltzmann equation perturbed by Fokker-Planck type operator. To overcome the lack of strong a priori estimates and to define a meaningful collision operator, we introduce a notion of renormalized solution which enables us to establish stability results for sequences of solutions and global existence for the Cauchy problem with large data. The proof of stability and existence combines renormalization with an analysis of a defect measure.