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Single assignment model

The high-level description we expect as input is an extended single assignment model. Many system designers prefer the use of procedural languages (e.g. Fortran or C) to describe their application. In order to derive the desired single assignment model from procedural code, techniques developed at the University of Delft (see chapter 4) and at the University of Patras (see chapter 5) can be used. [Pg.123]

Up to now, we only model single-assignment basic blocks, which can be represented by directed acyclic graphs (DAGs). This is sufficient for the scenarios we are dealing with. Fig. 1 shows the DAG and the deflnitions of the concrete data flow model for an example. [Pg.295]

The MNDO, AMI and PM3 methods are parameterizations of the NDDO model, where the parameterization is in terms of atomic variables, i.e. referring only to the nature of a single atom. MNDO, AMI and PM3 are derived from the same basic approximations (NDDO), and differ only in the way the core-core repulsion is treated, and how the parameters are assigned. Each method considers only the valence s- and p-functions, which are taken as Slater type orbitals with corresponding exponents, (s and... [Pg.85]

STRATEGY Use the VSEPR model to identify the shape of the molecule and then assign the hybridization consistent with that shape. All single bonds are cr-bonds and multiple i bonds are composed of a cr-bond and one or more TT-bonds. Because the C atom is attached to three atoms, we anticipate that its hybridization scheme is sp1 and that one unhybridized p-orbital remains. Finally, we form cr- and Tr-bonds by allowing the 1 orbitals to overlap. [Pg.237]


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