Letter from the Editor

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A very warm welcome to all SEBoK users. The BKCASE Editor in Chief (EIC) has overall responsibility for the continuing review and update of the SEBoK. Many thanks to the BKCASE Governors and the current members of the Editorial Board for supporting me.

I am delighted to be able to talk to you about SEBoK v. 1.9, which continues our commitment to regular review of the information referenced in our "Guide to the Systems Engineering Body of Knowledge".

The approach taken by the BKCASE Editorial Board to manage and evolve the SEBoK is itself continuing to evolve. SEBoK v1.4 was a significant milestone in this evolution, creating an alignment of SEBoK content with significant updates of ISO/IEC/IEEE. 15288:2015 Systems and Software Engineering - System Life Cycle Processes and the INCOSE SE Handbook v4.0, 2015. This marked something of a culmination of work started within the community working across all three of these products reaching back to the beginnings of the BKCASE project in 2009. Since then effort has been split between continuing to build on and mature content within the existing SEBoK and exploring other areas of related knowledge.

Subsequent SEBoK updates have continued tp evolve the content in response to new knowledge and community feedback. We have also made a number of structural changes to facilitate the ongoing evolution of the SEBoK. In particular a new section was included in Part 1 to reflect the ongoing transformation of the discipline of SE and associated emerging areas of knowledge. The first two of these being in Model Based Systems Engineering (MBSE) and the expansion of SEBoK to cover domain specific SE knowledge.

Version 1.9 contains more ongoing evolution of the SEBoK, working closely with the SE community.

SEBoK v. 1.9

SEBoK v1.9 contains detailed changes to article content organisation in Part 6 Related Disciplines and Part 7:Systems Engineering Implementation Examples.

Part 6 the SEBoK considers the relationships between SE and other disciplines. One challenge of part 6 is to align the knowledge discussed with the body of knowledge of the related disciplines, while still making it appropriate for systems engineers. To help do this the part 6 editors have created a standard article template which provides a structure within which to discuss discipline specific standards, practices and tools. In SEBoK v1.9 we have continued to populate these sections in collaboration with representatives from the related areas with an update of the System Resilience (formerly "Resilience Engineering") article.

Part 7 has been restructured, removing the old framework for examples ("vignettes" and "case studies", which reflected how the examples were developed). The example have been organized based on the organizational context: examples from commercial organizations, government organization, or examples in which development was a partnership between the two. These changes provide a better baseline to continue to evolve the content and role of these examples across the SEBoK.

In addition, a new example has been added around the use of model based systems engineering for the thirty-meter telescope.

See Acknowledgements and Release History for a more detailed list of all changes made for v1.9.

Future Direction for SEBoK

It has been my continuing privilege over the last 12 months to continue working with the group of dedicated and knowledgeable contributing authors and reviewers who make up the BKCASE community; and to help grow this community to expand our relationships with key organizations and groups both within systems engineering and outside of it.

The role of the Editorial Board is to work with this community of interest on an ongoing review of the current SEBoK content and structure and to develop plans for its maintenance and evolution. Our overall goals in evolving the SEBoK remain broadly the same as those outlined in previous SEBoK updates. I have restated and slightly modified those goals below:

  • Improve the ways in which Part 1 (SEBoK Introduction) provides a starting point for different SEBoK users to find and navigate knowledge relevant to them. This will include consideration of some of the SEBoK Use Cases which were not expanded in previous releases, and possible new case studies covering application domains such as Defense, Health Care or Transport.
  • Review Part 2 (Foundations of Systems Engineering) with help from the International Society for the Systems Sciences (ISSS) to better understand the relationships between systems science and systems thinking as applied to engineered systems. We hope this will lead to an improved integration of systems principles, concepts, patterns and models into the other systems engineering focused knowledge areas across the SEBoK.
  • Look for broader views on the key practices of Part 3 (Systems Engineering and Management) to feed back into the ongoing co evolution of key standards. In particular make more direct reference to the continuing evolution of Agile life cycle thinking and bring in more knowledge sources from the model based SE (MBSE) community.
  • Expand our coverage of knowledge on systems engineering application and practices. In particular look for ways to bring in more knowledge on how systems engineering practices such as architecting, life cycle tailoring and model based systems engineering are applied in other domains.
  • Identify the other groups, both within the systems engineering community and beyond, with interest in the topics of Part 5 (Enabling Systems Engineering) and Part 6 Related Disciplines and form stronger relationships with them. For example we are working with the IEEE Computer Society about the relationship between SE and Software Engineering.

We continue to work towards ensuring that our coverage of existing systems engineering knowledge is complete and to push the boundaries of that knowledge into new approaches and domains. I also want to strengthen further our links to all members of the systems engineering community through things like the SEBoK Sandbox. If you are interested in any of the activity discussed above or if you have other topics which we should be considering please contact me or the appropriate member of the Editorial Board directly or use one of the available feedback mechanisms.

We have continued to gather review comments and content suggestions from as wide a variety of individuals as possible to make the SEBoK a truly community-led product. Thank you to all those who have already joined this effort and I continue to look forward to working with many of you on future SEBoK releases.

Thank you,


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