This method can be more convenient for data that remains constant over the report, or data that you want to refer to often, because you don't have to nest a data set every time you want to use it.

The paper states a dynamic temperature estimating method based on time constant of the response curve of thermocouple.

The state variable approach of modern control theory provides a uniform and powerful method of representing systems of arbitrary order, linear or nonlinear, with time-varying or constant coefficients.