Dans le contexte de l'objectif du millénaire de scolarisation universelle, de nombreux pays de l'Afrique subsaharienne ont largement modifié le système de recrutement et de formation des enseignants du primaire. Les enseignants ainsi recrutés le sont sur la base de contrats annuels,...

In this paper, we study several tests for the equality of two unknown distributions. Two are based on empirical distribution functions, three others on nonparametric probability density estimates, and the last ones on differences between sample moments. We suggest controlling the size of such...

In this text, we review some recent developments in econometrics that may be of interest to specialists in other areas than economics, and we discuss some relations of econometric methodology with general themes of scientific methodology and philosophy of science, such as the falsifiability...

We estimate a generalized option pricing formula that has a functional shape similar to the usual Black-Scholes formula by a feedforward neural network model. This functional shape is obtained when the option pricing function is homogeneous of degree one with respect to the underlying asset...

The purpose of the paper is to propose an autocorrelogram estimation procedure for irregularly spaced data which are modelled as subordinated continuous time series processes. Such processes, also called time deformed stochastic processes, have been discussed in a variety of contexts. Before...