Paris West University Nanterre La Défense

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.

Replicant compression coding in Besov spaces

Abstract: We present here a new proof of the theorem of Birman and Solomyak on the metric entropy of the unit ball of a Besov space on a regular domain of The result is: if s - d(1/π - 1/p) + > 0, then the Kolmogorov metric entropy satisfies H(e) ~ e -d/s . This proof takes advantage of the representation of such spaces on wavelet type bases and extends the result to more general spaces. The lower bound is a consequence of very simple probabilistic exponential inequalities. To prove the upper bound, we provide a new universal coding based on a thresholding-quantizing procedure using replication.

Permanence and Innovation in Central Banking Policy for Financial Stability

Abstract: In the first part of this chapter, we emphasize the adaptability and continuity of the lender-of-last-resort (LOLR) doctrine beyond the diversity of financial structures from the nineteenth century to the present day. The second part deals with the global credit crisis and the analysis of the central banks’ innovative practices during the 2007–08 financial crisis. We highlight that the LOLR’s role is not confined to providing emergency liquidity. It aims to provide orderly deleveraging in the financial system in order to preserve the financial intermediation process. Our conclusion underlines that the crisis management has become global and strategic. It opens the way to a major regulatory and supervisory reform.

Analyse intraquotidienne de l'impact des "news" sur le marché boursier français

Abstract: The purpose of this paper is to study the impact of public information on the French capital market. Analysis is conducted on intraday data concerning firms which belong both to CAC 40 (important capitalization) and MIDCAC (weak capitalization). Data cover the period January 1995 to December 1999. In order to put forward the impact of public information on stock prices, we apply two non-parametric tests: the threshold test and the run test. Our results show that earnings announcements, rumors and mergers and acquisitions operations have a great importance on stock prices. These various announcements have not been correctly anticipated since they have an important impact on stock prices. These conclusions question the efficient capital French market hypothesis in its semi-strong form. J.E.L. Classification : G14.

Medical demography and intergenerational inequalities in general practitioners' earnings.

Abstract: This article examines the link between restrictions on the number of physicians and general practitioners' (GPs) earnings. Using a representative panel of 6016 French self-employed GPs over the years 1983–2004, we estimate an earnings function to identify experience, time and cohort effects. The estimated gap in earnings between ‘good’ and ‘bad’ cohorts can be as large as 25%. GPs who began their practices during the eighties have the lowest permanent earnings: they belong to the large cohorts of the baby-boom and face the consequences of an unlimited number of places in medical schools. Conversely, the decrease in the number of places in medical schools led to an increase in permanent earnings of GPs who began their practices in the mid-nineties. A stochastic dominance analysis shows that unobserved heterogeneity does not compensate for average differences in earnings between cohorts. These findings suggest that the first years of practice are decisive for a GP. If competition between physicians is too intense at the beginning of their careers, they will suffer from permanently lower earnings. To conclude, our results show that the policies aimed at reducing the number of medical students succeeded in buoying up physicians' permanent earnings. Copyright © 2008 John Wiley & Sons, Ltd.

Secuencias y consecuencias de algunos procesos de neolitización en los Andes

Abstract: Se describen los principales procesos constitutivos de la "neolitizacion" andina. El Area Central Andina constituye la primera de Sudamerica donde se ha observado una sedentarizacion de los grupos humanos previamente a la adopcion (o invencion) de la agricultura. Desde el 6000 AP existen instalaciones permanentes en el litoral de Peru, orientadas a una explotacion optima de los recursos marinos. En cambio, los mas antiguos indicios de especies vegetales manipuladas provienen de cuencas interandinas, en un contexto de caza-recoleccion y seminomadismo, aunque los centros primarios de domesticacion aun no han sido identificados. En cuanto a la domesticacion animal, varios focos parecen haber existido en Peru y Chile. Al final aparece la ceramica, ultimo elemento constitutivo del Neolitico andino, probablemente importada desde el norte (Colombia y Ecuador) o desde la foresta tropical oriental.