A complete reference manual for Astah System Safety is included in the product. If you cannot find the contents you are looking for on this online guide, please read the reference manual. You can open it from [Help] – [Reference manual] menu in Astah System Safety.
Astah GSN's short startup video using a sample GSN (Goal Structuring Notation) diagram.
Visualizing Safety Cases
Tim Kelly from York University talks about Goal Structuring Notation.
Rick Steiner on SysML ... making MBSE (Model-based Systems Engineering) more fun
Rick Steiner, co-author of "A Practical Guide to SysML: The Systems Modeling Language" talks about why SysML, approach to take, and fun in Systems Engineering with his passion for education. (Interviewed by Michael Chonoles)
Why do MBSE and SysML?
Sandy Friedenthal, a father of SysML, talks about MBSE(Model-based System Engineering) and SysML.