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Biomedical subjects

E Van Imhoff

Publications and source records attributed to E Van Imhoff.

7 recordsLinked to original sources
PubMed1997

The selection of internal migration models for European regions.

"A full multiregional projection model requires migration data that are simultaneously classified by age and gender and region of origin and region of destination. Except for a very small number of regions, these data requirements are so high that aggregation of the data (which is equivalent to simplification of the model) is called for. This paper investigates the extent to which the full internal migration matrix can be simplified without seriously affecting the performance of the resulting multiregional model. Using IPF (iterative proportional fitting) methods, a log-linear analysis of alternative model specifications is made, using data for Italy, the Netherlands and the UK....A reasonable balance between goodness-of-fit and parsimony is found for the model in which time interacts with the main effects only (i.e. with age/sex, with origin and with destination)."

Age Factors↗
PubMed1994

A consistency algorithm based on information theory.

"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." (SUMMARY IN FRE)

Evaluation Studies as Topic↗
PubMed1993

Demographic change, international migration, and public education.

"This paper studies the impact of demographic change and international migration on economic development and the education sector. We employ a simple simulation model for tracing the impact of international migration on the educational and economic system, under alternative assumptions on the education background and adaptation costs of migrants. An application to the case of the Netherlands shows that international migration of whatever (realistic) level will not be able to prevent strong population aging during the period 2010-2035. Given the current below-average educational and productive profile of the immigrant population in the Netherlands, increased migration will only make matters worse."

Acculturation↗
PubMed1990

The exponential multidimensional demographic projection model.

"This paper presents the multidimensional demographic projection on the basis of an exponential specification, which avoids the problems associated with the widely used specification on the basis of the linear integration hypothesis. It generalizes earlier work by Gill (1986) on Markov models for closed populations to include the case of open populations. A numerical illustration is also provided." (SUMMARY IN FRE)

Forecasting↗