Estimation of Growth Parameters

2.3.1. Description of the Bacterial Growth Curves

A modified four-parameter-Gompertz model was used (10).

2.3.2. Method for Estimation of the Growth Curves

1. Ordinary least squares: Statistical software STATISTICA 5.0. (STATISTICA for Windows [Computer program manual], Stat Soft Inc., 1995). For the algorithm of minimization of the loss function, the Rosenbrock/quasi-Newton procedure was applied.

2. Bootstrap method: SPSS 10 for Windows and S-PLUS 200. To plot the growth curves and also to estimate their parameters, the bootstrap method is used.

2.3.3. Analysis of the Variance (ANOVA) The statistical software MINITAB was used.

Was this article helpful?

0 0

Post a comment