Works by Van Der Vaart, H. R. (exact spelling)

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  1.  17
    Adult age, an investigation based on certain aspects of growth curves.H. R. Van Der Vaart - 1953 - Acta Biotheoretica 10 (3-4):139-212.
  2.  8
    A Note On Life Tables And Nonlinear Death Processes.H. R. van der Vaart - 1983 - Acta Biotheoretica 32 (1):3-11.
    This note is viewing survival data of a natural cohort as being generated by a possibly nonlinear, nonhomogeneous death process. It proves that the usual conditional distributions of the number of survivors at a certain age are binomial if and only if the death process is linear. Thus the customary statistical methods for the analysis of life table data are, strictly speaking, invalid whenever the underlying death process is nonlinear. For example, if a contagious disease is the cause of some (...)
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  3.  19
    The autocatalytic growth model.H. R. van der Vaart - 1968 - Acta Biotheoretica 18 (1-4):133-142.
    Because of the important role which the ‘autocatalytic’ or ‘logistic’ equation has played in determining the direction of a good deal of research both in demography and in the study of individual growth phenomena, a critical and comparative evaluation of those leading ideas inRobertson's book which pertain to this equation and of some of the criticisms levelled against it seemed to be of interest. The present paper shows that, contrary to common belief,Robertson did not really assume that the autocatalytic reactions (...)
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