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Subject: RE: [plcs-dex] Representing Task


Comments below.

Peter

 

-----Original Message-----
From: Barker, Sean (UK) [mailto:Sean.Barker@baesystems.com]
Sent: den 22 oktober 2007 12:22
To: Trine.Hansen@dnv.com; Gyllström Leif
Cc: plcs-dex@lists.oasis-open.org
Subject: [plcs-dex] Representing Task

 

 

Following conversations with Leif, I am proposing to develop the following template:

 

Representing_task_simple

 

The template is a cut down version of the Representing_task capability. It will be limited to the usage phase of the support solution, that is, it will not support the development of a task description. It will do the following:

 

Instantiate Task_method and its identifier, name and description

Instantiate Task_method_version with the task method version identifier and classified as "Task_status_in_use"

      [pbm] I would propose a default class as above, but enable other       classes to be used. Hard coded classes are a pain.

 

Optionally characterise a Task_method_version by assigning a Product_concept or Product_version in the role of "Product_in_focus", however I do not intend to make the link conditional on effectivity

      [pbm] Please do not use the term "Product_in_focus" this way, it is       not what was meant in the PLCS standard, and has been misinterpreted       several times before. Just avoid the term "Product_in_focus".

      Suggestion: "Product_concerned"

 

Instantiate a single Task_element and a single description attribute in the role of "Task_element_task_description"

      [pbm] why instantiate a task_element at all? I see no use for it, and   it makes things worse if somebody would like to extend this       task_method later on (by defining a task_sequence or whatever). Put       the task_description at the task_method (or task_version?) using an       assigning_descriptor instead.

 

Optionally allow the Task_element to be characterized by a document or partial document (which could be the maintenance manual) in the role "Documented_task_description"

 

I do not propose to include in the template the following functionality discussed in the representing_task capability:

- Task Objectives - to be a separate template

      [pbm] I would propose to show that as a characterization anyway

 

- Task lifecycle and lifecycle approval

      [pbm] I would propose to show that as a characterization anyway

 

- Task lifecycle relationships, including version progression

- Task justification

      [pbm] I would propose to show that as a characterization anyway

 

- meta information, such as owner, security classification or copyright notice

      [pbm] I would propose to show that as a characterization anyway

 

- task properties such as cost and time taken

- advisory task (such as safety instructions

- resource allocation, including parts to be fitted

- supporting documentation

 

      [pbm] are you also planning templates in the near future for t      ask_properties, resource_allocation, and task relationships? If not, I     would prefer you showing those as possible characterizations, so that we establish a "standard" for how that is done.

 

Note, this also excludes any functionality that would have been covered by any of the other proposed capabilities, such as the ability to identify environmental constraints.

 

Note this is a simple, one step task. There is a proposal for a template for representing_task_sequence. It is not possible to do this as a template, nor would it make sense to modify the syntax of templates to make it possible.

 

Comments for 13:30 UK time, please (Leif wants the template today)

 

Sean Barker

BAE SYSTEMS - Advanced Technology Centre

Bristol, UK

+44(0) 117 302 8184

 

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