Hierarchies of Modeling Subclasses

MODEL.LA. is a language with infinite extensibility of its vocabulary, enabled by a fixed set of she modeling hierarchies and a fixed set of 13 semantic relationships. In Section IV.C, we discussed the hierarchies of modeling subclasses emanating from the six basic modeling elements. What is far more important for the modeling power of MODEL.LA. is its... 

Fig. 19. Partial view of the variable hierarchy of modeling subclasses.

To account for all representational needs in process engineering, MODEL.LA uses six (6) basic classes of modeling elements, and fairly rich modeling hierarchies of subclasses, emanating from the basic modeling elements. 

The modeling hierarchies of constraint and generic-variable (see Section IV.C) have been expanded to a series of subclasses, which... 

The hierarchy of mathematical model classes is developed as follows. First, the concept phase system model in the conceptual model is set as the super class of all concrete phase system models holding common attributes such as assumptions and validity range. The rheological behavior model, as a subclass of phase system model, represents a type of mathematical models that is of major concern of this application. Especially, the derivation of the subclasses of shear viscosity model has been given most consideration up to now. As a... 

Connectors might be organized in hierarchies of connectors by means of the is-a relationship to describe dilferent classification of the connectors. For the engineering domain, the connectors can be classified in mechanical, electrical/electronical and hydraulic connectors. This can be modeled in the ontology by subclassing the Connector class with more specific types of connectors. 

The parabolic model makes it possible to develop an empirical hierarchy of addition reactions. All the known addition reactions are divided a priori into classes in accordance with the atomic structure of the reaction center in the transition state. Each class is characterized by a pair of force constants of the outgoing and incoming bonds or by the parameters b = b and a = b jb( (see above). Subclasses are distinguished in each class. Each subclass is characterized by r = const or br = const, which is confirmed by analysis of a large array of experimental results. Each subclass of reactions can be described additionally by the energy of the thermally neutral reaction eo (see Eq. (7.19) and by the threshold value for which E = 0.5RTprovided that A//e < (see Eq. (7.22). The kinetic parameters for various sub-... 

Model. They form the topmost layer of the concept hierarchy all other classes and relations - those in the Meta Model as well as those in the submodels - are specializations (i.e., subclasses or subrelations) of these fundamental concepts . RelationClass is a good example of such a fundamental concept The class is a means for representing n-ary relations in OWL (by default, the OWL language provides language primitives for binary relations only). Specializations of RelationClass are utilized in all four submodels of the C EDM. 

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