PDR 30.3 N&C2/Demeny.sp
نویسنده
چکیده
World Population in 2300 (United Nations 2003b), reporting on the proceedings of a December 2003 expert group meeting on long-range population projections and presenting the results of a new set of United Nations population projections,* bears out Hajnal’s argument. Among his three propositions, the validity of the second is the most obvious. There has been a veritable outpouring of demographic projections during the last 50 years, prepared by various international organizations and national agencies, as well as by independent analysts. Among these, the United Nations Population Division’s now biennially revised projections are by far the most detailed, best known, and most widely used. This well-deserved prominence reflects the Division’s unparalleled access to national data, its in-house analytic experience and resources, and its willingness to draw on outside ex-
منابع مشابه
An Ab Initio SCF-MO Study of Conformational Properties of Cyclodeca-1,2,3-triene
Ab initio calculation at HF/6-31G* level of theory for geometry optimization and MP2/6-31G*//HF/6-31G* for a single point total energy calculation are reported for the important energyminimumconformations and transition-state geometries of of cyclodeca-1,2,3-triene (1). The mostfavorable conformation of 1 is a unsymmetrical twist-chair (1-TC) structure. Degenerateinterconversion of 1-TC with it...
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تاریخ انتشار 2004