Aspects and Multi-aspects

  • Bernard P. ZeiglerEmail author
  • Hessam S. Sarjoughian
Part of the Simulation Foundations, Methods and Applications book series (SFMA)


This chapter starts with a discussion of how different aspects can be associated with the same entity and how this allows you to decompose a system in different ways. This leads to a consideration of the concept of multi-aspect which provides a uniform way to associate an unlimited number of related aspects with the same entity. Pruning a multi-aspect involves setting its multiplicity and restructuring it into an ordinary aspect with the specified number of components. We show how pruning of multi-aspects effectively open up a large space of simulation models with an unbounded variety of possibilities for coupling their components. Unfortunately, unless properly managed, this variety can also entail enormous amounts of detailed data entry which can be tedious and error prone. This leads to development of a uniform coupling rule which separates node-to-node network connectivity (specified by a directed graph) and port-to-port coupling which is forced to be uniform across all network connections. Some commonly employed schemes such as cyclic, cellular, and tree compositions have well-defined digraphs with uniform couplings so they fit this mold.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.University of ArizonaTucsonUSA
  2. 2.Faculty of Computer Science and Computer Systems EngineeringArizona State University, School of Computing, Informatics, and Decision Systems EngineeringTempeUSA

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