Linear spectral unmixing analysis was performed by means of iterative linear least squares fitting procedure (Gaussian multi-peaks, Origin® 6.1, OriginLab Corporation, Northampton, MA, USA).
The use of an iterative linear solver for the DSA makes its CPU time less sensitive to grid size.
Then, for obtaining an appropriate level of performance, robust local stabilising PI controllers are designed for each of the decoupled areas using an iterative linear matrix inequality (ILMI) algorithm such that asymptotic stability with a minimal H∞ performance level is achieved.
The mode-dependent control gains are obtained by using an iterative linear matrix inequality (LMI) algorithm.
Other works present some difficulties in obtaining direct formulas since they need to solve a nonlinear minimization problem with linear constraints, forcing the use of iterative methods.
These simple linear models allowed the use of iterative formulae for calculating their response to input trains, and analytic expressions for the calculation of the intrinsic discriminability between pairs of input trains.
Strategies to reduce radiation exposure include the use of iterative reconstruction algorithms such as 'iDose'100100% ASIR (adaptive statistical iterative reconstruction)' and 'IRIS (iterative reconstruction in image space)'.
The algorithm uses only the iterative linear least squares.
The algorithm proposed and implemented here, which explicitly exploits the properties of logarithms, is based on the iterative use of two linear least squares approximations applied to different phases of a growth curve.
Its principle disadvantage is that, in general, it generates an asymmetric coefficient matrix, and therefore requires more storage and the use of non-traditional, and sometimes slowly-converging, iterative linear solvers.
