Convergence of some random functionals of discretized semimartingales

In this paper, we study the asymptotic behavior of sums of functions of the increments of a given semimartingale, taken along a regular grid whose mesh goes to 0. The function of the $i$th increment may depend on the current time, and also on the past of the semimartingale before this time. We study the convergence in probability of two types of such sums, and we also give associated central limit theorems. This extends known results when the summands are a function depending only on the increments, and this is motivated mainly by statistical applications.Comment: 31 page

On the Exponential Decay of the n-point Correlation Functions and the Analyticity of the Pressure

The goal of this paper is to provide estimates leading to a direct proof of the exponential decay of the n-point correlation functions for certain unbounded models of Kac type. The methods are based on estimating higher order derivatives of the solution of the Witten Laplacian equation on one forms associated with the hamiltonian of the system. We also provide a formula for the Taylor coefficients of the pressure that is suitable for a direct proof the analyticity

Contributions of Marine Libraries in ODINAFRICA to Oceanogrphic Research: IMROP Researchers

In marine information management, THE ODINAFRICA project participated in training librarians, the creation of a pan-African network of National Oceanographic Data Center (NODC), product development and targeted services for national and regional end users. Currently, over 40 marine-related institutions in 25 African countries including Mauritania have tried to address the challenges faced in access to data and information for coastal management. NODC of Mauritania was established in 2001 under the responsibility of the Mauritanian Institute of Oceanographic Research and Fisheries (IMROP). IMROP has developed several products and services such as ODINAFRICA NODC, project websites, newsletters and brochures, ocean data catalogues (metadata), library catalogues, and directories of experts and institutions. IMROP's librarians also participated in several training sessions on the management of marine information. This paper discusses the project’s achievements. A questionnaire was administered to 20 IMROP researchers about their use of products and services and to plan for the maintenance of the various services and databases