La premiere partie de ce texte examine les conditions analytiques sous lesquelles on peut attribuer une valeur a une langue ou une autre, en distinguant notamment les valeurs privee et sociale, marchande et non-marchande. La seconde partie illustre la premiere a l'aide d'une estimation de la...

Large cities produce more output per capita than small cities. This higher productivity may occur because more talented individuals sort into large cities, because large cities select more productive entrepreneurs and firms, or because of agglomeration economies. We develop a model of systems of...

We investigate the predictability of stock returns in the financial market for a large panel of developed countries using investor sentiment, business-cycle variables and financial indicators within two panel regime-switching models, with threshold and smooth transition between regimes. We find...

In this paper, we develop alternative models to price derivative securities when the underlying asset may be subject to jumps. These models allow for two kinds of jumps: scheduled jumps which are caused by information for which the disclosure data is known in advance (e.g. earnings...

The aim of this paper is twofold. First we discuss the origin of tree methods. Essentially we survey earlier methods that led to CHAID (Kass, 1980; Biggs et al., 1991). The second goal is then to explain in details the functioning of CHAID, especially the differences between the original method as...

Bhagwati and Brecher (1980) showed that when the relative amount of foreign-owned factors in the host country is sufficiently large as to induce a change in the direction of the trade pattern, immiserising tariff reductions may occur. Here it is shown that in the mirror case when foreign-owned...

The paper reviews the evolution in insurance economics over the past 25 years, by first recalling the situation in 1973, then presenting the developments and new approaches which flourished since then. The paper argues that these developments were only possible because steady advances were made...

This paper uses a three-factor (capital, low and high-skill labour), two-household (low and high-skill individuals), two-sector trade model to analyse the determinants of voter attitudes towards immigration under direct democracy and identify factors that would be coherent with both the observed...