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In this paper we study the one-sided Hausdorff approximation of the generalized cut function by sigmoidal general n-stage growth model. For some conditions of the reaction constants, the model has a certain right of existence insofar as the theory of sigmoidal functions is well developed. The estimates of the value of the best Hausdorff approximation obtained in this article can be used in practice as one possible additional criterions in ''saturation'' and ''lag-time'' study. We examine the small data for modeling the growth of red abalone ( Haliotis Rufescens ) in Northern California.  Numerical examples are presented using  CAS MATHEMATICA .

A note on the n-stage growth model. Overview