In recent studies the truncated Levy process (TLP) has been shown to be very promising for the modeling of financial dynamics. In contrast to the Levy process, the TLP has finite moments and can account for both the previously observed excess kurtosis at short timescales, along with the slow convergence to Gaussian at longer timescales. In this paper I further test the truncated Levy paradigm u...

We develop Bayesian Markov chain Monte Carlo methods for inferences of continuoustime models with stochastic volatility and infinite-activity Levy jumps using discretely sampled data. Simulation studies show that (i) our methods provide accurate joint identification of diffusion, stochastic volatility, and Levy jumps, and (ii) affine jumpdiffusion models fail to adequately approximate the behav...

BACKGROUND Scientific research into mental health outcomes following trauma is undergoing a revolution as scientists refocus their efforts to identify underlying dimensions of health and psychopathology. This effort is in stark contrast to the previous focus which was to characterize individuals based on Diagnostic and Statistical Manual of Mental Disorders (DSM) diagnostic status (Insel et al....

Author affiliations: Institut National de la Santé et de la Recherche Médicale, Paris, France (A. Birgy, P. Bidet, S. Bonacorsi); Université Paris Diderot, Paris (A. Birgy, P. Bidet, S. Bonacorsi); Hôpital Universitaire Robert-Debré, Paris (A. Birgy, P. Bidet, S. Bonacorsi); Association Clinique Thérapeutique Infantile du Val de Marne, Saint Maur des Fossés, France (C. Levy, E. Sobral, R. Cohen...

This paper investigates two aspects of China's pollution levy system that has been implemented for about 20 years in China. First, the determinants of differences in enforcement of the pollution levy across urban areas are analyzed. The results show that actual collections of the uniformly designed pollution levy are sensitive to differences in economic development and environmental quality, wh...

Are laws made by voters or industry? Here, we address this question in the context of copyright levies. Many Western countries allow private copying subject to a compulsory copyright levy. Applying political economy analysis, we show that (i) content producers always prefer a copyright levy to no levy; and (ii) if ethical costs are high, the median voter will prefer a copyright levy, while the ...

Author affiliations: Institut National de la Santé et de la Recherche Médicale, Paris, France (A. Birgy, P. Bidet, S. Bonacorsi); Université Paris Diderot, Paris (A. Birgy, P. Bidet, S. Bonacorsi); Hôpital Universitaire Robert-Debré, Paris (A. Birgy, P. Bidet, S. Bonacorsi); Association Clinique Thérapeutique Infantile du Val de Marne, Saint Maur des Fossés, France (C. Levy, E. Sobral, R. Cohen...

Data on single-nucleotide polymorphisms and large chromosomal rearrangements, coming from a long time evolution experiment with Escherichia Coli, are analyzed in order to argue that mutations along a cell lineage can be modeled as Levy flights in an abstract mutation space. These Levy flights have two components: random single-base substitutions and large DNA rearrangements. The data provide es...