60:20716 Rogers,
Andrei; Little, Jani S. Parameterizing age patterns of
demographic rates with the multiexponential model schedule.
Mathematical Population Studies, Vol. 4, No. 3, Feb 1994. 175-95, 223
pp. New York, New York/Yverdon, Switzerland. In Eng. with sum. in Fre.
"For nearly 200 years actuaries, statisticians, and demographers
have sought to summarize the age pattern of mortality rates by means of
a limited number of parameters. Such 'model schedules' have also been
useful in representing schedules of rates other than mortality....This
paper illustrates a particular general functional form for such model
schedules: the multiexponential function. It discusses the changing
behavior of this function as its parameters take on different values
and examines the quality of the fits of this function to observed data
on mortality, fertility, and migration."
This is a revised version
of a paper originally presented at the 1993 Annual Meeting of the
Population Association of America.
Correspondence: A.
Rogers, University of Colorado, Boulder, CO 80309-0484.
Location: Princeton University Library (SPR).
60:20717 Shen,
J. Spatial-dynamic population systems: analysis and
projection. Environment and Planning A, Vol. 26, No. 3, Mar 1994.
471-88 pp. London, England. In Eng.
"In this paper a set of
more-detailed multiregional population accounts is proposed to specify
more realistically the exposure time of populations at risk for various
components of population change. The concepts of population-time at
risk and forward demographic rates based on the initial population are
discussed. The relations of the forward demographic rates defined in
this paper with the occurrence-exposure demographic rates are
discussed. A more precise and straightforward multiregional population
model is developed on the basis of forward demographic rates. The
model is also expressed in the familiar matrix form of multiregional,
cohort-survival models." Some applications of the model are made to
data for China.
Correspondence: J. Shen, London School of
Economics, Department of Geography, Houghton Street, Aldwych, London
WC2A 2AE, England. Location: Princeton University Library
(UES).
60:20718 Van Imhoff,
Evert. A consistency algorithm based on information
theory. Mathematical Population Studies, Vol. 4, No. 3, Feb 1994.
197-203, 223 pp. New York, New York/Yverdon, Switzerland. In Eng. with
sum. in Fre.
"This paper provides a geometric-mean solution to the
consistency problem of multidimensional demographic projection models,
based on the constrained minimization of an entropy function. A
comparison with the existing harmonic-mean solution yields many
similarities and almost no differences....However, one major advantage
of the geometric mean is that its corresponding distance function is
firmly based on (information) theory."
Correspondence: E.
Van Imhoff, Netherlands Interdisciplinary Demographic Institute, P.O.
Box 11650, 2602 AR The Hague, Netherlands. Location: Princeton
University Library (SPR).
60:20719 Winkelmann,
Rainer; Zimmermann, Klaus F. Count data models for
demographic data. Mathematical Population Studies, Vol. 4, No. 3,
Feb 1994. 205-21, 223 pp. New York, New York/Yverdon, Switzerland. In
Eng. with sum. in Fre.
"This paper deals with the estimation of
single equation models in which the counts are regressed on a set of
observed individual characteristics such as age, gender, or
nationality....We propose a generalized event count model to
simultaneously allow for a wide class of count data models and account
for over- and underdispersion. This model is successfully applied to
German data on fertility, divorces and
mobility."
Correspondence: R. Winkelmann, University of
Munich, SELAPO, Ludwigstrasse 28 RG, 80539 Munich, Germany.
Location: Princeton University Library (SPR).
