Issue 13259: Requirement constants should be integrated into Model-centric vision of SysmL (sysml-rtf) Source: Lockheed Martin (Mr. Michael Jesse Chonoles, michael_chonoles2(at)omg.org) Nature: Uncategorized Issue Severity: Summary: SysML requirements are now pure text and not completely integrated in to the model-centric approach Currenltly requirements are written as The top speed of this car shall be greater than 100 mph. Instead, it should be written as The top speed of this car shall be greater than <x>. And there be a compartment of the requirement where the current value of <x> is given <x> = 200mph. This <x> should be integrated as a design value throughout SysmL and should be connectable to parmetrics. It should also support dependencies so that other requirements value's (and block's features) can be dependent on the value of <x>. Then I can determine all the places in my system where there is a dependency on <x> and my equations and constraints are automatically updated. Which in many cases would allow me to automatically rerun my simulations. This is an improvement in integrating the model. Currently, with pure text requirements constants in the requirements are often repeated in equations, parametrics, constraints, algorithms. This repeating defeats some of the advantages of model-approach, as they are identical or related elements that need to be synchronized by hand. Resolution: Revised Text: Actions taken: January 15, 2009: received issue Discussion: Following is the discussion from a previous deferred resolution by the SysML 1.2 RTF: SysML 1.3 RTF Disposition: Deferred OMG Issue No: 13259 Document ptc/2011-08-08 Page 183 Methods to capture values of requirements properties within a model, and to allow other parts of a model to depend on these values, are still being explored. The issue is being deferred to continue consideration of various options. This issue is being deferred because no proposed resolution was voted on during the schedule of the SysML 1.3 RTF. Disposition: Deferred End of Annotations:===== te: Thu, 15 Jan 2009 05:57:52 -0500 From: "Chonoles, Michael J" Subject: SysML: Requirement constants should be integrated into Model-centric vision of SysmL To: issues@omg.org Thread-Topic: SysML: Requirement constants should be integrated into Model-centric vision of SysmL Thread-Index: Acl2mghWz6ebof5SSHajr+bh2EJHLwAKGQcQAA80fgA= X-MS-Has-Attach: X-MS-TNEF-Correlator: X-OriginalArrivalTime: 15 Jan 2009 10:57:56.0142 (UTC) FILETIME=[1F0CFCE0:01C97700] SysML requirements are now pure text and not completely integrated in to the model-centric approach Currenltly requirements are written as The top speed of this car shall be greater than 100 mph. Instead, it should be written as The top speed of this car shall be greater than . And there be a compartment of the requirement where the current value of is given = 200mph. This should be integrated as a design value throughout SysmL and should be connectable to parmetrics. It should also support dependencies so that other requirements value's (and block's features) can be dependent on the value of . Then I can determine all the places in my system where there is a dependency on and my equations and constraints are automatically updated. Which in many cases would allow me to automatically rerun my simulations. This is an improvement in integrating the model. Currently, with pure text requirements constants in the requirements are often repeated in equations, parametrics, constraints, algorithms. This repeating defeats some of the advantages of model-approach, as they are identical or related elements that need to be synchronized by hand. Michael Chonoles Subject: About 13259 Date: Wed, 8 Jul 2009 14:32:45 +0200 X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: About 13259 Thread-Index: Acn/yDHJt1rD/roQRfCgJX+66VNBiw== From: "BERNARD, Yves" To: X-OriginalArrivalTime: 08 Jul 2009 12:32:46.0031 (UTC) FILETIME=[325DA5F0:01C9FFC8] X-MIME-Autoconverted: from quoted-printable to 8bit by amethyst.omg.org id n68CUtbP021294 Dear all, I think we could go further in the direction proposed by this resolution to consider "Property Based Requirements". Are you aware of this paper: P.Micouin, Toward a property based requirements theory: System requirements structured as a semilattice, Systems Engineering, vol. XI n°3, p235-245, 2008 ? (Abstract: http://www.micouin.com/TPBR-Micouin.pdf) What do you think about it ? Yves The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other then the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. Date: Wed, 08 Jul 2009 08:50:13 -0400 From: "Friedenthal, Sanford" Subject: RE: About 13259 To: "BERNARD, Yves" , "sysml-rtf@omg.org" Thread-Topic: About 13259 Thread-Index: Acn/yDHJt1rD/roQRfCgJX+66VNBiwAAkZxQ Accept-Language: en-US acceptlanguage: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: X-MIME-Autoconverted: from quoted-printable to 8bit by amethyst.omg.org id n68Cr12A026424 Yves I am aware of this and have distributed it the RTF previously I believe. However, I view this as a capability that goes beyond the scope of the current RTF. I do think it offers significant potential and would like to see it included as part of the response to the SysML RFI that was recently issued. Sandy -----Original Message----- From: BERNARD, Yves [mailto:Yves.Bernard@airbus.com] Sent: Wednesday, July 08, 2009 8:33 AM To: sysml-rtf@omg.org Subject: About 13259 Dear all, I think we could go further in the direction proposed by this resolution to consider "Property Based Requirements". Are you aware of this paper: P.Micouin, Toward a property based requirements theory: System requirements structured as a semilattice, Systems Engineering, vol. XI n°3, p235-245, 2008 ? (Abstract: http://www.micouin.com/TPBR-Micouin.pdf) What do you think about it ? Yves The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other then the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. Subject: RE: About 13259 Date: Wed, 8 Jul 2009 14:53:34 +0200 X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: About 13259 Thread-Index: Acn/yDHJt1rD/roQRfCgJX+66VNBiwAAkZxQAAASaEA= From: "BERNARD, Yves" To: "Friedenthal, Sanford" , X-OriginalArrivalTime: 08 Jul 2009 12:53:35.0007 (UTC) FILETIME=[1AD042F0:01C9FFCB] X-MIME-Autoconverted: from quoted-printable to 8bit by amethyst.omg.org id n68CrmFf026709 OK, I will suggest to Patrice to answer the RFI survey, if he has not already done it. Yves -----Message d'origine----- De : Friedenthal, Sanford [mailto:sanford.friedenthal@lmco.com] Envoyé : mercredi 8 juillet 2009 14:50 À : BERNARD, Yves; sysml-rtf@omg.org Objet : RE: About 13259 Yves I am aware of this and have distributed it the RTF previously I believe. However, I view this as a capability that goes beyond the scope of the current RTF. I do think it offers significant potential and would like to see it included as part of the response to the SysML RFI that was recently issued. Sandy -----Original Message----- From: BERNARD, Yves [mailto:Yves.Bernard@airbus.com] Sent: Wednesday, July 08, 2009 8:33 AM To: sysml-rtf@omg.org Subject: About 13259 Dear all, I think we could go further in the direction proposed by this resolution to consider "Property Based Requirements". Are you aware of this paper: P.Micouin, Toward a property based requirements theory: System requirements structured as a semilattice, Systems Engineering, vol. XI n°3, p235-245, 2008 ? (Abstract: http://www.micouin.com/TPBR-Micouin.pdf) What do you think about it ? Yves The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other then the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. The information in this e-mail is confidential. The contents may not be disclosed or used by anyone other then the addressee. Access to this e-mail by anyone else is unauthorised. If you are not the intended recipient, please notify Airbus immediately and delete this e-mail. Airbus cannot accept any responsibility for the accuracy or completeness of this e-mail as it has been sent over public networks. If you have any concerns over the content of this message or its Accuracy or Integrity, please contact Airbus immediately. All outgoing e-mails from Airbus are checked using regularly updated virus scanning software but you should take whatever measures you deem to be appropriate to ensure that this message and any attachments are virus free. Lockheed Martin