I am happy to announce my new book about SYSMOD. SYSMOD is a MBSE toolbox for pragmatic modeling of systems. It is well-suited to be used with SysML. The book provides a set of methods with roles and outputs. Concrete guidances and examples show how to apply the methods with SysML. Today SYSMOD or more specifically customizations of SYSMOD are used in many industrial projects. Many years ago I have found the Systems Modeling Toolbox (SYSMOD) while I worked together with other MBSE experts on the...

As co-founder and a member of the organizing committee I am proud to announce another NoSE tour: For the fourth time the Nordic Systems Engineering Tour will be on tour from May 23rd to 27th. The tour is a one-day conference with four different venues. Tour speakers will present at all venues, local speakers only at a local event. Tour speakers have the opportunity to give a talk in four different countries to a large audience. The tour starts in Helsinki (23rd), then Stockholm (24th), Copenhagen (25th), and...

I am happy to announce that my brand new book Model-Based System Architecture has hit the shelves. I have written the book together with my colleague Stephan Roth and two good friends from the MBSE community Jesko Lamm and Markus Walker. We have collected a set of best practices, principles, concepts, and definitions about model-based system architecting. The book focuses on the practical application and is a good addition for a system architects toolbox. Stephan and I are both MBSE consultants...

Recently I've asked Where is SysML 1.4? Due to some formal problems it took a long time to make an official publication of the new version SysML 1.4. The work on the SysML 1.4 was completed a long time ago. Now SysML 1.4 is officially published. You find the specification on the OMG server: http://www.omg.org/spec/SysML/1.4/ . I've written a blogpost series about the changes of SysML 1.4....

Recently I have finished my blog post series about the changes of SysML 1.4. Unfortunately, SysML 1.4 is still not officially published yet. I was a member of the SysML 1.4 revision task force of the OMG that has compiled the new SysML version. We have analyzed the issues that were filed against SysML, elaborated resolutions and finally have voted for the changes. If you have any issue with SysML, you can report it here and we will consider it. We have already...

Well, actually it is summertime. However the weather reminds me more of autumn. At least here in Sweden. In any case it is a good time to plan and book your next training. One of my favourite projects the Nordic MBSE School provides a comprehensive MBSE program. Four course modules for you to combine to a 2, 4, 6 or 8 days training. Each course module is two days long and is conducted in central Stockholm. I will do the modules...

The Diagram Definition (DD - previously known as Diagram Interchange (DI)) is a format to exchange diagram data between tools. The data about diagrams is separated from the data about the model information. The interchange format for the model data is XMI (XML Metamodel Interchange; see XMI specification page). The following figure depicts the whole picture of the SysML Diagram Interchange architecture. As well as SysML is an extension of UML, the SysML Diagram Interchange is an extension of the UML...

The sixth part of the blogpost series about the changes in SysML 1.4 presents the updated concepts for blocks and ports. The new concept of bound references is already covered in the special blogpost What’s new in SysML 1.4 – Constraining decompositions. Behavior Compartment A SysML block can own behaviors. For instance a state machine or an interaction. A special behavior owned by the block is the so-called classifier behavior. It represents the autonomous behavior of a block and is executed when...

The Nordic MBSE School is one of my favourite projects. The Nordic MBSE School is organized by the Nordic Systems Engineering Alliance - a network of small and medium-sized organisations with unique competencies in product creation and technical leadership. One of these organisations is my company oose. Model-based Systems Engineering (MBSE), has for the last decade gradually changed the practice of development and procurement of complex technical systems. Wisely used, MBSE contains a significant potential for improving the quality and efficiency...

The fifth part of the blogpost series about the changes in SysML 1.4 presents the updated concept of units. But first a big sorry for being quiet for such a long time. But better be quiet than posting spam. I hadn’t enough time to continue my series about the news and updates of SysML 1.4 as well as other interesting things for the MBSE community. The reason for my absence was one of those interesting things: I was on the final spurt...