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The Residual World::Tag = 'Naf'

Entries that have been tagged with 'Naf'.-

NATO Architecture Framework Metamodel v3.1 Surfaces

by Nic Plum on Monday 09 August, 2010 - 15:37 GMT

Posted in Architecture FrameworkNAFNews

Tags: c3metamodelnafnatonewsreleaseresourcespecification

NATO logoA definition/description of the NATO Architecture Framework Metamodel version 3.1 is now publicly available (the definition of the framework had previously disappeared from public view).

Currently only the document that specifies the metamodel is available - this is one part of the overall definition of the NATO Architecture Framework. The documentation that specifies the architecture views for version 3.1 isn’t yet available. The document that is available is Chapter 5 - NATO Architecture Framework Metamodel (NMM) and Architecture Data Exchange Specification (ADES) .

Without a complete document set and without a change record yet it’s hard to make an assessment, but ...

  • NAF 3.1 now seems to be much closer to the MODAF 1.2.003 metamodel (MODAF is now at 1.2.004)
  • The number of subviews has increased in total from 47 at 3.0 to 49 at 3.1 - with notable changes in the NATO Service-Oriented Views (NSOVs) which now align with MODAF
  • the usage context of Resources (Capability Configuration, Artefact, Role, Post, Organisation, Software) can now be specified - this is a way of allowing exchange of models which were previously unexchangeable owing to the choices allowed by the NAF metamodel in typing a real world thing e.g. system vs platform vs artefact with the result that different architects would choose different stereotypes. The conflict in choice is still present but the usage context allows the architect to say, for example, this Platform is being used as a System. This is identical to MODAF from 1.2.003.
  • any Resource is allowed to have a function now (NAF previously divided Resources up into ‘functional’ and ‘non-functional’
  • any Resource can now interact with another Resource

Some niggles still remain e.g. the ‘system’ stereotype is really not a first class player and cannot itself contribute to capability or have parts which are other resource-like things - so no complex system or including the man with the machine as part of the system. This looks as though it has to be achieved using a Capability Configuration as a system and ignoring the fact that the System stereotype cannot represent a system. The new definition of System in v 3.1 doesn’t help - ‘The usage of an artefact as a System in a CapabilityConfiguration’ - as it doesn’t actually define what a system is.

Still the increased flexibility wrt Resources is a significant step forwards in representing the real world.

Update 11th November 2010
The definition for the NATO architecture framework seems to have disappeared again.

 

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    Has the NATO Architecture Framework v3 Definition “Naffed-Off”?

    by Nic Plum on Friday 25 June, 2010 - 13:29 GMT

    Posted in Architecture FrameworkNAFStandards

    Tags: architecture frameworkc3definitionincosenafnatopublicspecification

    Where's the NATO Architecture Framework Definition?Hoping to present at the INCOSE UK Chapter’s Annual Systems Engineering Conference later this year. I was checking the list of references and wanted to make sure I’d got the right URL and title for the the definition of the NATO Architecture Framework (NAF) v3. The NATO C3 home page which used to provide a link to the defining documents seems not to have any link or mention of NAF. Without any search mechanism available it looks as though the definition of NAF has well and truly disappeared. Of course it might still exist on the restricted access military network but that’s not much use to folks on the public side who use or wish to use NAF.

    Why has it disappeared? Is it really there but I can’t see it? Human error? Is it a harbinger of greater things to come (in the same way folks speculate every time the Apple Store home page goes down for ‘maintenance’)? Have they decided that it’s no longer for the general public?

    This is a shame since it has to be better for everyone to have these things in the open. If anyone knows any more or can provide publicly accessible links please get in touch. Until such time it looks like NAF has “naffed-off” ! wink

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      Pulling the MODAF, DODAF, NAF et al Into a Common Frame of Reference

      by Nic Plum on Monday 05 April, 2010 - 10:52 GMT

      Posted in Architecture FrameworkMODAFNAFSite

      Tags: comparecontrastdodafmodafnafsitetrakwiki

      c300 pages on the wikiSome of the more observant amongst you might have noticed that we have a wiki that aims to cover multiple enterprise architecture frameworks (DODAF, MODAF, NATO Architecture Framework and TRAK as a minimum) as well as the use of such things in a typical systems engineering lifecycle.

      This is a long slow process. The first to be covered was TRAK and now we’ve got decent coverage of the NATO Architecture Framework as well as a sprinkling of MODAF. To date there are the best part of 300 pages. There’s a lot still to do so if anyone would like to help then this would be gratefully received as it takes time to locate source material and extract the essence.

      Why go to this trouble? For several reasons:

      • To help. Some frameworks either don’t have much of a web presence or provide information in forms that isn’t the easiest to navigate through. MODAF has suffered in navigability as a result of being taken from the site maintained by Model Futures and squeezed into the ‘one size fits all’  corporate MoD structure. The NATO Architecture Framework and some others just offer a set of unlinked PDF documents without supporting web content. If we can extract the bare bones in terms of view definitions and link them to other views, the respective metamodel and other frameworks then this has to be better.
      • To compare and contrast. All of these frameworks have a common origin, the DODAF, and have at times borrowed bits from each other so there is a lot of similarity. There are also some important differences reflecting their ages and their respective specification and user communities. It’s very difficult to see this when they are widely separated and presented in very different formats and language or terminology. If we can provide bridges between the frameworks and put the information in a similar way alongside each other then it’s much easier for the user or potential user of the frameworks. I have this belief that there will be a universal metamodel at some point. One of the reasons we separated the definition of the TRAK Viewpoints from the TRAK metamodel was to   allow for the possibility that we’d not got it right and to enable the metamodel to be re-used if needs be).
      • To provide points of reference. As a lot of the frameworks are expressed in large documents it’s quite hard to make reference to a particular view or metamodel element. If each view, each term or each metamodel element is a separate wiki page it makes it much easier to make reference to - each element is addressable by a URL (which is where I’d really like the architecture models themselves to be at some point in the future) and within a namespace named after the framework (not all terms have the same meaning e.g. MODAF:View is a singular architecture view, NAF:View is a collection of subviews and TRAK:Architecture View although singular is a response to a view specification (TRAK:Viewpoint).

      Being forced to read the documentation in some detail means that you do learn quite a lot. I’ve learnt that NAF:System cannot realise a capability and that NAF:Organisational Resource  (Organisation and Post = ‘Job’)  cannot have functions assigned directly only indirectly via NAF:Role.

      I’d be interested if anyone has good pointers to AUSDAF documentation and very much so if any site member wanted to help to start fleshing out other frameworks.

      Keep up to date with the wiki by subscribing to the RSS feedAnyway, you can keep up to date with progress / changes on the wiki by subscribing to the RSS feed.

       

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