From:      Friedenthal, Sanford 

 Sent:      Monday, December 01, 2003 3:08 PM

 To:  ''

 Subject:   SE DSIG London Meeting Minutes (Nov 19, 2003)


 SE DSIG Members,


 The Systems Engineering Domain Special Interest Group (SE DSIG) met at

 the OMG Technical Meeting in London on November 19, 2003.  Highlights

 from the meeting are included below.


 Joint Meeting with ADTF - SysML Presentation


 The SE DSIG held a joint meeting with the ADTF to hear the Initial

 Submission in response to the UML for Systems Engineering (SE) RFP that was issued by the OMG on March 28, 2003.  As reported previously, the SysML Partners was formed shortly after the issuance of the RFP, and includes broad participation from both end-users and tool vendors. Information on the UML for SE RFP can be found from the SE DSIG site at and the Initial Submission can be found at


 Following the presentation, a procedural issue was raised that the

 submission did not satisfy the OMG specification format. As a result,

 a vote was passed 18-16 for SysML to be resubmitted at the next OMG

 meeting. Despite this setback, the feedback on the SysML technical

 content and approach was quite positive.


 The SysML approach reuses a subset of UML 2 and extends the language as required to satisfy the requirements of the UML for SE RFP. The SysML Partners are working to the original RFP schedule with a target date for an adopted extension of UML for SE in August, 2004. To date, the initial version of SysML includes the following primary extensions to UML 2.

 *    Activity diagram extensions to support traditional SE funcitonal flow block diagrams and continuous behaviors

 *    Composite structure diagram extensions to better integrate input/output flows and deployment

 *    A new requirements diagram to model requirements, including provisions for subtypes of requriements, traceability between requirements, and assignment to model elements that realize the requirements.

 *    A new parametric diagram that helps to model performance, reliability, and other parametric relationships, and provide a bridge to engineering analysis tools

 *    Alignment with AP-233 neutral data interchange format to support interchange of UML models with other engineering tools, such as mechanical, electrical, and analysis tools.


 It is believed that these extensions of the selected subset of UML 2

 provides a substantial systems modeling capability. Future versions

 will be planned to further enhance the language.


 Feedback on SysML Presentation to the ADTF


 The SE DSIG held an afternoon session to collect additional feedback

 on the presentation. Several inputs were received and will be provided

 to the SysML team. A follow-up detailed review is scheduled for

 January 25-26 at the INCOSE International Workshop in Portland Oregon,

 which is expected to provide additional constructive feedback and

 validation of the approach.


 AP-233/UML Integration Demonstration

 Ian Bailey from Eurostep presented a brief overview of the ISO STEP

 Standards and AP-233. AP-233 is the ISO STEP Standard that represents

 a neutral data interchange standard for systems engineering data  to

 support tool interoperability. This development of UML for SE and the

 AP-233 standard have been worked in a cooperative effort from the

 beginning to establish both a systems modeling language and a neutral

 data interchange format that are compatible.  AP-233 is being

 developed in a modular fashion, and currently includes a module that

 supports interchange of text based requirements. Ian provided a brief

 demonstration of how a UML tool could exchange requirements

 information with a requirements management tool such as DOORS.

 Additional information on AP-233 and "STEP for UML Users" can be found

 at:  .


 Collaboration with Other Activities


 Several opportunities were noted for the SE DSIG to interact with

 other OMG groups.  Alan Moore reported on interest in a UML profile

 that could help drive distributed simulations under the High Level

 Architecture (HLA) framework.  Roger Burkhart reported on interest

 from the business modeling activities of the Business Enterprise

 Integration (BEI) task force, and the potential synergy with the SE

 DSIG, in such areas as structural models and requirements management. 

 He also indicated some potential synergy with current activities of

 the Manafacturing and Industrial Systems (MANTIS), such as product

 structure and product data management addressed by the Product

 Lifecycle Management RFP, and responses to the Knowledge-Based

 Engineering RFI.  Alan and Roger agreed to work on setting up

 discussions on these possible joint interests at the next OMG meeting

 in Anaheim.


 Next SE DSIG Meeting


 The next SE DSIG meeting will be held in conjunction with the OMG

 Technical Meeting in Anaheim, California, the week of February 2-6,




 Sanford Friedenthal


 Lockheed Martin Corporation

 (703) 293-5557