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Model Mathematics

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Component: environment

Component: x

\frac{d}{d time} (x) = alpha ⅇ^{a (1.0 - (z^{2.0})) + b (1.0 - (y^{2.0}))} + D u - (alpha x)

Component: y

\frac{d}{d time} (y) = beta x ⅇ^{b (1.0 - (z^{2.0}))} - (beta y)

Component: z

\frac{d}{d time} (z) = gamma y - (gamma z)

Component: u

u = \cos (omega time)

Component: model_constants

Source: Derived from workspace Lenbury, Pacheenburawana, 1991 at changeset 6500d3e52b1c.; This exposure was expired. A more up-to-date exposure is available, or view related resources.

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Modelling fluctuation phenomena in the plasma cortisol secretion system in normal man