Search found 10 matches

by ""Alan McLucas"" <a.mclucas@a
Tue Apr 22, 2008 7:23 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38544

QUERY Meaning of Stock/Level

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> I disagree with Jack's example. Maybe it's just inappropriately chosen? We might have a stock of heat, but never a stock of temperature. Perhaps this thread has past its use-by date. Regards, Alan Dr Alan McLucas School of Inform...
by ""Alan McLucas"" <a.mclucas@a
Mon Apr 14, 2008 7:57 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38544

QUERY Meaning of Stock/Level

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> George, Thank you. We can always rely on you for your sage comments. Thank you for your examples. I have been deliberately playing ""devil's advocate"" with the way I have sought to elicit comments about this ...
by ""Alan McLucas"" <a.mclucas@a
Thu Apr 10, 2008 7:23 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38544

QUERY Meaning of Stock/Level

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> Ricardo's comment reinforces the dilemma. The concern I still have is that whilst we might legitimately use stock-and-flow diagrams to enable conceptualization, the strict mathematical relationships that control those stocks and ...
by ""Alan McLucas"" <a.mclucas@a
Wed Apr 09, 2008 7:59 am
Forum: SD Mailing List Archive
Topic: QUERY Meaning of Stock/Level
Replies: 46
Views: 38544

QUERY Meaning of Stock/Level

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> There appears to be an increasing trend for some authors to proffer models having ""stocks"" containing soft variables or intangibles as being legitimate for their research. I have seen two examples of this in...
by ""Alan McLucas"" <a.mclucas@a
Mon Oct 08, 2007 8:53 am
Forum: SD Mailing List Archive
Topic: QUERY Structural changes and validity
Replies: 17
Views: 12521

QUERY Structural changes and validity

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> I agree that past social structures continue to evolve to become future social structures, and it is challenging (practically impossible, I suggest) to frame those structures in a forensic sense with the aim of build models that ...
by ""Alan McLucas"" <a.mclucas@a
Tue Sep 11, 2007 12:59 pm
Forum: SD Mailing List Archive
Topic: QUERY Getting a Good Problem Statement
Replies: 36
Views: 24114

QUERY Getting a Good Problem Statement

Posted by ""Alan McLucas"" <A.McLucas@adfa.edu.au> This is an interesting thread and one which deserves closer attention. My comments are intended to add a few ideas that have either been touched upon lightly or, in a small number of instances, missed. I seek your indulgence. In ...
by ""Alan McLucas"" <a.mclucas@a
Fri Mar 02, 2007 2:14 pm
Forum: SD Mailing List Archive
Topic: QUERY Separate Professional Conference (was Future Developme
Replies: 26
Views: 20019

QUERY Separate Professional Conference (was Future Developme

Posted by ""Alan McLucas"" <a.mclucas@adfa.edu.au> Colm suggested: ""I can't help thinking that the SD community just doesn't have enough good - i.e. properly documented, with RoI etc - examples of SD in use in business ... "" I suggest that is probably true, ...
by ""Alan McLucas"" <a.mclucas@a
Thu Feb 22, 2007 2:05 pm
Forum: SD Mailing List Archive
Topic: QUERY Separate Professional Conference (was Future Developme
Replies: 26
Views: 20019

QUERY Separate Professional Conference (was Future Developme

Posted by ""Alan McLucas"" <a.mclucas@adfa.edu.au> The idea of having a 'professional conference' is a good one. Of course, there are many of us who manage to teach, practice and conduct research. I believe that it is important to keep these three as close as practicable. As rece...
by ""Alan McLucas"" <a.mclucas@a
Thu Feb 08, 2007 12:24 pm
Forum: SD Mailing List Archive
Topic: QUERY Structural or Behavioral Theory
Replies: 5
Views: 6160

QUERY Structural or Behavioral Theory

Posted by ""Alan McLucas"" <a.mclucas@adfa.edu.au> George Richardson makes a very important point here. Thank you. In the application of the scientific method, hypotheses must be rigorously tested before we might have sufficient confidence to declare that we have (the basis for) ...
by ""Alan McLucas"" <a.mclucas@a
Wed Jan 24, 2007 12:32 pm
Forum: SD Mailing List Archive
Topic: QUERY The Death of System Dynamics?
Replies: 26
Views: 32802

QUERY The Death of System Dynamics?

Posted by ""Alan McLucas"" <a.mclucas@adfa.edu.au> At the risk of entering the impending fray like a prize fighter leading with his chin, I declare my support of Richard's criticisms. Before proceeding, let me independently thank Cognitus Ltd for their long time continued sponsor...