VJGM model

One can also compare the spectral densities for the three models as was done by Bendler and Yaris for their model relative to the VJGM model (22). The comparison of the spectral densities produced by the three models using the parameters given in Table I... 

Comparison of the results of the JS expression with those of the DRIS model shows that the latter allows for a more detailed analysis of the real chain in terms of torsional energy barriers and the three dimensional chemical structure. Furthermore, while the JS model originates from the VJGM model and accounts only for three-bond motions, the DRIS model shows the contribution of all transitions of the N bonds surrounding the bond of interest. 

The approach of Bendler and Yaris, vdiich is also based on the three-bond motions of the VJGM model, results in the following expression for the OACF ... 

In the model proposed by Valeur, Jarry, Geny and Monnerie (VJGM), the chain is assumed to perform 3-bond motions on a tetrahedral lattice, to account for... 

In the model proposed by Valeur, Jarry, Geny and Monnerie (VJGM), the chain is assumed to perform 3-bond motions on a tetrahedral lattice, to account for the fixed bond angles imposed to real backbone (22i. This model leads to a one-dimension diffusion equation for the orientation probability, with the following expression for the OACF ... 

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