The essence of this method consists in construction of an initial approximation of the feedback matrix such that a numerical sequence, which generated by arbitrary iterative method and beginning from this initial approximation, converges to an exact solution of the feedback design problem.
In each of these methods, an initial approximation f0 is sought, which satisfies the boundary conditions.
To solve this problem, in ref (115) the authors first computed a(F) values at the B3LYP level of theory with specially tailored basis sets and then used computed values as an initial approximation in the fitting procedure.
Fiber microdissection techniques in post- mortem brains allow for an initial approximation to the complex architecture of the fiber tract systems closely related to the human claustrum.
We made an initial approximation for H3K4me1, the most abundant of modifications tested in cChIP-seq, and applied it to all modifications.
First, we choose an initial approximation x0 ∈ X.
As an initial approximation, we chose to fit a single-exponential decay to each pixel to estimate the mean fluorescence lifetime, as shown in Figure 7 c.
Due to geometric nature of stress distribution in the unidirectional short-beam specimen loaded in a principal material plane, the optimization procedure converges rapidly, and is not sensitive to the formulation and parameters in the initial approximation of the constitutive model.
In fact, if we start with a zero initial approximation for the solution, the package produces an accurate approximate solution of the problem.
There is a version of multiplicative ART in which the initial approximation is defined as R k =0 = ρ i, j = 1, and As in additive ART, one can start with a blank (zero) reconstruction, or with R k =0 = 1 if the multiplicative correction approach is used.
