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Negative factor counting

Figure 4 Application of the combination of the extended matrix block negative factor counting method with partitioning a molecule into subspaces with the help of localized orbitals in the case of a naphthalene molecule... Figure 4 Application of the combination of the extended matrix block negative factor counting method with partitioning a molecule into subspaces with the help of localized orbitals in the case of a naphthalene molecule...
Bakhshi and collaborators [173] calculated the density of states curves of periodic and non-periodic poly-(thiophene-co-isothianaphthene) block copolymers of different compositions by the negative-factor-counting method and discussed trends in bandgap variation. [Pg.499]

THE NEGATIVE FACTOR COUNTING (NFC) TECHNIQUE AND ITS APPLICATION TO APERIODIC DNA AND PROTEINS... [Pg.140]

The Negative Factor Counting Technique in Its One Band (Simple Tight-Binding Form)... [Pg.140]

In section II we review a method particularly well suited to take advantage of the quasi-one-dimensionality of our problem, the method of negative factor counting (NFC) . The techniques for dealing with banded matrices introduced here prove to be of general value in other contexts developed below (sections III and IV). [Pg.279]

The negative factor counting method is applicable to any real symmetric matrix. It is most efficient when the matrix has the additional property of being banded. The reader is refered to Dean for additional details. One... [Pg.282]

To determine the level distribution (density of states, DOS) in an aperiodic polymer chain one can apply the negative factor counting (NFC) method /2/. According to this method if we write for the disordered chain a Huckel determinant which is tridiagonal due to the fact that only first neighbors interactions are taken into account... [Pg.341]

See other pages where Negative factor counting is mentioned: [Pg.455]    [Pg.457]    [Pg.463]    [Pg.4]    [Pg.116]    [Pg.141]    [Pg.143]    [Pg.145]    [Pg.147]    [Pg.149]    [Pg.151]    [Pg.153]    [Pg.155]    [Pg.157]    [Pg.159]    [Pg.161]    [Pg.299]    [Pg.320]    [Pg.280]    [Pg.285]    [Pg.288]    [Pg.293]    [Pg.341]   
See also in sourсe #XX -- [ Pg.279 , Pg.280 , Pg.337 , Pg.341 ]



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Negative-factor-counting technique

The Negative Factor Counting Technique in Its One Band (Simple Tight-Binding) Form

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