55:40667 Biswas,
Suddhendhu; Ebraheem, Nather A. On a logistic process
oriented population model for the optimal growth rate of a
population. Genus, Vol. 44, No. 3-4, Jul-Dec 1988. 19-35 pp. Rome,
Italy. In Eng. with sum. in Fre; Ita.
The authors present a
stochastic model to estimate maximum and minimum population growth
rates. The model assumes a population that is converging toward
stability while its growth pattern is determined by density-dependent
fertility and mortality parameters. The model is tested using official
data on the population of India.
Correspondence: S. Biswas,
University of Delhi, Department of Statistics, Delhi 110 007, India.
Location: Princeton University Library (SPR).
55:40668 Hernandez,
Gaston E. Dynamics of populations with age-difference and
diffusion: localization. Applicable Analysis, Vol. 29, 1988.
143-63 pp. London, England. In Eng.
"In this paper we study the
behavior of the solutions of the Gurtin-MacCamy model for the dynamics
of populations with [spatial] diffusion and age-dependence. We give
sufficient conditions on the birth and death modules for the population
to remain localized in a fixed interval or to ultimately cover all the
domain."
Correspondence: G. E. Hernandez, University of
Iowa, Department of Mathematics, Iowa City, IA 52242.
Location: Princeton University Library (SM).
55:40669 Liao, Tim
F. A flexible approach for the decomposition of rate
differences. Demography, Vol. 26, No. 4, Nov 1989. 717-26 pp.
Alexandria, Virginia. In Eng.
"Conventional methods of decomposing
the difference between two rates, such as Kitagawa's classic component
analysis, are confined to taking the average of compositional
differences. I propose a more general modeling approach involving
three steps: (1) A system of equations with the various additive
components of the rate difference is set up; (2) unknowns (refined rate
differences) are estimated with Clogg's purging method; (3) the
components are calculated. I use an example of U.S. mortality data to
compare the proposed method with the conventional ones. The method can
be generalized to decompositions for multiple groups and for multiple
confounding factors. Kitagawa's method is a special case of this
general approach."
Correspondence: T. F. Liao, University
of Georgia, Department of Sociology, Athens, GA 30602.
Location: Princeton University Library (SPR).
55:40670 Meinken,
Holger. The study of interdependent social processes using
event history analysis: the method and its application to the example
of young women's employment and family careers. [Die Untersuchung
interdependenter sozialer Prozesse mittels Ereignisanalysen: die
Methode und ihre Anwendung am Beispiel von Berufs- und
Familienkarrieren junger Frauen.] IBS-Materialien, No. 28, ISBN
3-923340-21-4. 1988. 100 pp. Universitat Bielefeld, Institut fur
Bevolkerungsforschung und Sozialpolitik: Bielefeld, Germany, Federal
Republic of. In Ger.
The method of event history analysis is
described and its use in studying the interdependence of social
processes is discussed. An example is presented using data on
employment and family formation among young women in North
Rhine-Westphalia, West Germany. The data were collected between 1981
and 1986 and concern more than 1,000 women.
Correspondence:
Universitat Bielefeld, Institut fur Bevolkerungsforschung und
Sozialpolitik, Universitatsstrasse, D-4800 Bielefeld 1, Federal
Republic of Germany. Location: Princeton University Library
(SPR).
55:40671 Moya,
Oscar. The decomposition of data on children under five
years of age to single years of age based on population
projections. [Descomposicion del grupo de menores de 5 anos en
edades simples en base a las proyecciones de poblacion.] Notas de
Poblacion, Vol. 15, No. 45, Dec 1987. 67-81 pp. Santiago, Chile. In
Spa. with sum. in Eng.
A method to develop estimates of the
population under age five by single years of age from data on five-year
age groups normally available from population projections is described
using Chilean data.
Correspondence: O. Moya, Centro
Latinoamericano de Demografia, Edificio Naciones Unidas, Avenida Dag
Hammarskjold, Casilla 91, Santiago, Chile. Location: Princeton
University Library (SPR).
55:40672
Oosterhaven, Jan. A prototype comparative static
demo-economic model for impact and projection studies. Institute
of Economic Research Memorandum, No. 240, Feb 1988. 15 pp. University
of Groningen, Faculty of Economics, Institute of Economic Research:
Groningen, Netherlands. In Eng.
The author proposes a simple,
single-region, demo-economic household consumption model. The model is
suited "for making projections of regional output, employment,
unemployment and population at large. The projection of the regional
labour force will simply equal the sum of employed and unemployed
people. The model is also suited for impact
studies."
Correspondence: University of Groningen, Faculty
of Economics, Institute of Economic Research, P.O. Box 800, 9700 AV
Groningen, Netherlands. Location: Princeton University Library
(SPR).
55:40673 Puu,
Tonu. On growth and dispersal of population. Annals
of Regional Science, Vol. 23, No. 3, Oct 1989. 171-86 pp. New York, New
York/Berlin, Germany, Federal Republic of. In Eng.
A revised model
of population growth and diffusion is presented. The model, originally
developed by H. Hotelling in 1921, was extended by the present author
in 1985 to include an explicit production function. The revised model
proposed here avoids the problem in the original model caused by the
fact that the stationary solutions are periodic and dip into negative
populations.
For a related study, published in 1985, see 51:40665.
Correspondence: T. Puu, University of Umea, Department of
Economics, S-90187 Umea, Sweden. Location: Princeton
University Library (PF).
55:40674 Xie,
Yu. An alternative purging method: controlling the
composition-dependent interaction in an analysis of rates.
Demography, Vol. 26, No. 4, Nov 1989. 711-6 pp. Alexandria, Virginia.
In Eng.
"The purging method controlling for the composition-group
interaction developed by Clogg and his associates has proven useful in
demographic research. This article proposes an alternative method,
partial CD purging, that controls the interaction between composition
and the dependent variable. The purged rates from this new method are
invariant to changes in the marginal distribution of composition, but
those from the earlier purging method are not. Mathematical
relationships between the proposed method and other techniques are also
explored."
Correspondence: X. Yu, University of Michigan,
Population Studies Center, 1225 South University Avenue, Ann Arbor, MI
48104. Location: Princeton University Library (SPR).
