Em solos com elevado grau de intemperismo, a imobilização temporária de fósforo pela biomassa microbiana do solo (BMS) pode ser um mecanismo de retardamento das reações de adsorção. O objetivo do presente trabalho foi avaliar a amplitude no fósforo microbiano…

 

Abstract text...

 

We correct two errors of omission in our paper, On Lévy processes conditioned to stay positive. Electron. J. Probab. 10, (2005), no. 28, 948--961. Math. Review 2006h:60079.

Recently, Bauke and Mertens conjectured that the local statistics of energies in random spin systems with discrete spin space should, in most circumstances, be the same as in the random energy model. We show that this conjecture holds true as…

We prove some asymptotic results for the radius and the profile of large random planar maps with faces of arbitrary degrees. Using a bijection due to Bouttier, Di Francesco & Guitter between rooted planar maps and certain four-type trees with…

We derive concentration inequalities for functions of the empirical measure of large random matrices with infinitely divisible entries, in particular, stable or heavy tails ones. We also give concentration results for some other functionals of these random matrices, such as…

Let $R_{t}=\sup_{0\leq s\leq t}X_{s}-X_{t}$ be a Levy process reflected in its maximum. We give necessary and sufficient conditions for finiteness of passage times above power law boundaries at infinity. Information as to when the expected passage time for $R_{t}$ is…

We analyze the two-player game of Knock 'em Down, asymptotically as the number of tokens to be knocked down becomes large. Optimal play requires mixed strategies with deviations of order $\sqrt{n}$ from the naïve law-of-large numbers allocation. Upon rescaling by…