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Other SE Life-Cycle Building Blocks Articles

This topic is a staging area for articles on subjects of relevance to SE Life-Cycle Building Blocks that don't neatly fit under one of its other topics. In most cases, this is because the subject matter is at the edge of our understanding of systems engineering, represents some of the most difficult problems MITRE systems engineers work on, and has not yet formed a sufficient critical mass to constitute a separate topic. This is definitely not the "et cetera" pile of articles.

As more articles are added and an organizing theme among several of them becomes evident, a new topic will be created. In other cases, if a connection between an article and an existing topic becomes apparent, the article will be moved and the topic description revised to reflect the change. Last, a subject may remain a critical, special area of interest and a related article will continue to be carried under this topic.

Spanning the Operational Space—How to Select Use Cases and Mission Threads
Use cases and mission threads are useful mechanisms to document an existing system's functionality or to establish a user's needs for a new system. They reflect functional requirements in an easy-to-read format. Use cases and mission threads are used during many stages of system development, e.g., to capture requirements, to serve as the basis for the design process itself, to validate the design, for testing, etc.

Acquiring and Incorporating Post-Fielding Operational Feedback into Future Developments: The Post-Implementation Review
This process follows the fielding of a system and informs future efforts. As such, it follows the last life-cycle phases that we have defined here.

Test and Evaluation of Systems of Systems
MITRE systems engineers are expected to apply systems engineering processes and make plans for systems that are constituents of systems of systems (SoS). This article addresses test and evaluation plans in the SoS environment.

Verification and Validation of Simulation Models
This article describes best practices and lessons learned for developing and executing a plan to verify and validate a simulation model of a system or system component, and in collecting and analyzing different types of verification and validation data. 

Affordability, Efficiency, and Effectiveness
This article describes the various practices and analyses that MITRE systems engineers can apply to achieve three key success measures—affordability, efficiency, and effectiveness (AEE)—in developing and shaping engineering solutions, making program recommendations, and evaluating engineering efforts on behalf of their sponsor’s mission.