A Review of a Mathematical Definition of a System

There have been a number of attempts at generating a mathematical definition of a system, dating back to at least Ludwig von Bertalanffy’s now classic book, General System Theory, published in 1968. The systems engineering community would benefit greatly from such a definition, which would define a system precisely in …

Modeling SysML Interactions in GENESYS

In last month’s blog, Modeling SysML Activities in GENESYS, I discussed how to model behavior using activity diagrams. What, though, are interactions? Interactions are a UML concept brought over into SysML that can be used as an alternative approach for modeling behavior in SysML. Interactions are distinct from activities and …

The Forgotten System

In any system design project there are always three systems of importance. The first of these is what we call the system of interest or the solution system. That is the system we intend to design. (Note: For the purposes of this discussion, the name “system of interest” may be …

The Importance of Architecting our Modeling Environment

Systems engineers and systems architects have many architectures of which they need to be aware: there’s the architecture of the system-of-interest (or system under design), the architecture of the larger system in which the system-of-interest must operate (the context system), and the architecture of the enabling system (the enterprise or …