Category: Systems Engineering

Exploring the State Transition Diagram in CORE

By Ron Kratzke, Vitech Principal Systems Engineer Recently I have fielded several questions regarding the use of the State Transition Diagram in CORE and how States/Modes and the diagram relate to system behavior and simulation of the system behavior using CORESim. State transition diagrams describe the logical transition of a …

Defining Project Breakdown Structures

By Sara Sumner, Vitech Applications Engineer As a systems engineer, I have found that when working with complex projects, it is critically important to capture the relationships between the product and the functional work allocation. Capturing these relationships can help manage the uncertainty of impacts on the project when inevitable …

The Human-Machine-Environment Matrix And Use Cases

By Gareth Digby, Vitech Principal Systems Engineer Summary Eliciting the requirements for a system is an important first step in the system’s creation. Use cases provide an effective means of capturing the stakeholder’s understanding of the system’s needs. This post demonstrates how Chapanis & Fitts’ “Human-Machine-Environment” Matrix can provide a …