18,419 research outputs found
Falling birth rates and world population decline: A quantitative discussion (1950-2040)
The UN data (1950-2010) and projections (both medium and low-fertility variants for 2015-
2040) show that fertility rates are already below replacement level in all continents except Africa. In this
paper we develop a simple new approach for population projections based on a Improved Rate Equations
(IRE) model. Population projections under the (1) Malthusian assumption, (2) an (IRE) model fitting and
extrapolating from actual UN population data up to 2040, and (3) UN projections (low-fertility variant),
are compared. The model fits quite well actual data and suggests a world population decline in the 21st
Century. The economic, social and political consequences of this new and global circumstance would be
far reachin
La pobreza en la vejez
Entre 2004 y 2012 el riesgo de pobreza se ha extendido algunas dĂ©cimas en España, pasando del 19,9 al 21,1% de la poblaciĂłn. Parece poco, dada la crisis actual. Pero los indicadores agregados “resumen” la combinaciĂłn de distintas “partes”, con caracterĂsticas y comportamientos propios (en un rĂo con una profundidad media de 30cm. hay tramos donde es posible ahogarse).Proyecto Intramural CSIC 201310E044 "Mantenimiento de la plataforma Envejecimiento en Red"Peer reviewe
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