Modeling languages

The Universal Modeling Language is used to describe a software system [4, 5], Several kinds of diagrams exist to model the diverse properties of the system. Thus a description of the system can be developed that enables the systematic and uniform documentation of the system. The class diagram, for example, represents the classes and their relationships. But also interacting diagrams exist, to describe the dynamic behavior of the system and its objects. 

G. Booch, J. Rumbaugh, I. Jacobson, Unified Modelling Language User Guide, Addison Wesley Longman, Reading, Mass 1999. 

ASCEND. This framework is by Westerberg and coworkers (Ref. 295) at Carnegie-Mellon University. It features an object-oriented modeling language and is well suited for constructing complex models. 

Model language not included in Interim Measures Guidance - Interim Final. 

In terms of LINGO modeling language, the program can be written as follows. 

To present briefly the different possible scenarios for the growth of multilayer films on a homogeneous surface, it is very convenient to use a simple lattice gas model language [168]. Assuming that the surface is a two-dimensional square lattice of sites and that also the entire space above the surface is divided into small elements, forming a cubic lattice such that each of the cells can be occupied by one adsorbate particle at the most, the Hamiltonian of the system can be written as [168,169]... 

In the first chapter of Volume 2 (hereinafter referred to as 21 1) we presented the general framework of MODEL.LA., a modeling language that can capture the hierarchical and distributed character of processing systems. We will employ all aspects of MODEL.LA. in order to develop a complete and consistent description of plants that will satisfy the modeling needs for the synthesis of operating procedures. 

Fourer, R. D. M. Gay and B. W. Kemighan. AMPL A Modeling Language for Mathematical Programming. Scientific Programming, San Francisco (1993). 

Catalysis uses notation based on the industry standard Unified Modeling Language... 

Chapter 9, Model Frameworks and Template Packages, describes how frameworks are defined in Catalysis and shows how frameworks provide an enormous degree of extensibility to a modeling language. 

This chapter deals with model frameworks and explains how to build and compose them using template packages. It also discusses how the fundamentals of the entire Catalysis approach are themselves defined as such frameworks and shows how they can form the basis for a modeling language that is truly extensible. 

We have seen that templates can be used to define domain-specific patterns, providing a higher-level notation for describing problems. The same templates can be used to define the modeling language itself, down to its formal basics. 

The notation used is based on that of the Unified Modeling Language (UML 1.1). What we add is a systematic way to use this language, a way to establish and maintain the relationships between the documents, and a clear semantics for abstract models. 

The Unified Modeling Language (UML) 1.0 was defined by a consortium of companies between 1996 and 1997 and was submitted for standardization by the OMG The companies who cosubmitted the proposal were Rational, HP, TI, Microsoft, ICON Computing, Unisys, and MCI Systemhouse. UML 1.1 was standardized in September 1997. 

Fowler98] Fowler, M., andK. Scott. 1998. UML Distilled Applying the Standard Object Modeling Language. Reading, Mass. Addison Wesley Longman. 

Figure 1. Symmetry-unique SC orbitalsfor the gas-phase Diels-Alder reaction along the CASSCF(6,6) IRC at IRC -0.6 amu bohr (leftmost column), TS (IRC = 0) and IRC +0.6 amu bohr (rightmost column). Three-dimensional isovalue surfaces, corresponding to / = 0.08, were drawn from virtual reality modelling language (VRML) files produced by MOLDEN [il].

---