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Terms and Definitions

This is a working area for the Terms and Definitions Focus Team of the NAFEMS-INCOSE SMSWG.

Each focus team is encouraged to use this page, as well as the other collaboration areas linked below, in any way it wishes. This page is not intended primarily to be a public-facing page, but a resource to be used internally by the team members.

A few times a year, each focus team typically reports on its activities during the monthly members meetings of the SMSWG. Each focus team is encouraged to maintain links to these more public presentations and discussions at the top of this page. These can be a subset of the complete meeting materials available on the main SMSWG wiki page as well as in the SMSWG Collaborative Community (member access required).


Focus Team LeadEmail Address
Ed Ladzinski

Google Group with Google Drive for email discussions and document sharing within the Focus Team.

Please contact the Focus Team lead to join the focus team and to be included in email communications, meetings, and activities. Each focus team will periodically share information and report activities back to the rest of the SMSWG.


Align terms across glossaries published by NAFEMS, INCOSE, and/or the SMSWG itself


Ongoing Work & Activities

Focus Team Organizers

Lead Ed Ladzinski:
Co-Lead TBD

Subteam members:

Paul Barnard (Mathworks)
Joe Walsh (intrinSIM)

Initial terms for consideration

Model-Based Definitions

Model-Based Engineering (MBE) - a.k.a., Model-Driven Engineering (MDE) and Model-Driven Development (MDD). “An approach to engineering that uses models as an integral part of the technical baseline that includes the requirements, analysis, design, implementation, and verification of a capability, system, and/or product throughout the acquisition life cycle.” (Final Report, Model-Based Engineering Subcommittee, NDIA, Feb. 2011). It is the umbrella for many other MBx activities.

Model‐Based Systems Engineering (MBSE) – “the formalized application of modeling to support system requirements, design, analysis, verification and validation activities beginning in the conceptual design phase and continuing throughout development and later life cycle phases.” (INCOSE SE Vision 2020 (INCOSE-TP-2004-004-02, Sep 2007). MBSE is a subset of Model Based Engineering (MBE) and Systems Engineering (SE).

Model-Based Design (MBD) – “Real-time, high fidelity systems models that use mathematical, acausal, and visual methods to define system behavior, and performance. Often constructed as lumped parameter models supporting designs for complex controls, signal processing, and communication systems.” (Wikipedia) It is a subset of Model Based Engineering.

Model-based definition (MBD) “is the practice of using 3D models (such as solid models, 3D PMI and associated metadata) within 3D CAD software to define (provide specifications for) individual components and product assemblies. The types of information included are geometric dimensioning and tolerancing (GD&T), component level materials, assembly level bills of material, engineering configurations, design intent, etc.” (Wikipedia) It is a subset of Model Based Design.

Model-Based Safety Analysis (MBSA) – “An approach in which the system and safety engineers share a common system model created using a model-based development process. By extending the system model with a fault model as well as relevant portions of the physical system to be controlled, automated support can be provided for much of the safety analysis.” (Model-Based Safety Analysis, NASA, Feb. 2006). It is a sub-set of Model Based Engineering.

Model‐Based Enterprise (MBE) – “A strategy where an annotated digital three-dimensional (3D) model of a product serves as the authoritative information source for all activities in that product’s lifecycle.” (Wikipedia) It is the culmination of MBE.

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smswg/terms_definitions.txt · Last modified: 2020/01/24 08:08 by rburkhart