Population dynamics: a general formula Hervé LE BRAS From the offset, the theory of stable populations has been misunderstood in two ways: on the one hand, it has been taken as it stands and people have tried to find "practical" applications for it, and on the other, more complicated...

Knolle (Helmut) - The Number of Previous Partners in the Transmission of AIDS through Sexual Intercourse Explicit hypotheses relating to the choice of sexual partners are necessary to construct models of the transmission of AIDS which take account of differences between the sexual behaviour of...

Le Bras (Hervé). -Projections of the foreign population : A ten-year perspective During the last ten years several projections relating to the resident foreign population of France have been constructed. These may be compared with estimates of the same foreign population at the date for which...

SUMMARY The demographer often asks questions concerning the future : when will a woman get married ? When will she have children ? When will she die ? In the present paper, we ask questions concerning the past : How old was a child when his mother and his father died ? How many of his grand...

[fre] simples et générales, mais tout comme celui de Samuelson, il est homogène et n'est donc pas soumis à des effets d'échelle. Or, l'opposition éventuelle n'est pas entre modèles linéaires et non linéaires, mais entre modèles homogènes et inhomogènes. Un exemple de ces derniers est...