Le Bras Hervé and Chesnais Jean-Claude. Cycle of habitation and age of inhabitants. In a new type of settlement such as a new town or district, young couples with children predominate, whereas adolescents and old persons are absent. The development of this type of population poses many...

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...

Le Bras Hervé. ? Fluctuations and Growth of Populations Subjects to a Constraint. Fluctuations in populations which are observed or forecast in some circumstances are generally caused by a constraint on the population. It is shown that such situations can almost always be described in terms of...