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> I understand that the DCIEM tables depart considerably from the underlying 
> model due to empirical modification of the schedules.  A couple of years ago 
> I was also interested in the DCIEM model and asked a collegue who is 
> involved with DCIEM to ask R. Nishi if I could have reprints of any DCIEM 
> reports on the model.  The answer I got, and this is second hand (from my 
> collegue) and may lose some accuracy in the re-telling, is that Nishi would 
> have trouble identifying a unified algorithm underlying the tables, and that 
> the tables were empirical modifications of the early Kidd-Stubbs model, plus 
> bits and pieces of newer models.  At this time Nishi was in the process of 
> writing an article, trying to pull the models togethor.  I cannot verify the 
> accuracy of this information.

Based on my own comparisons, the air decompression tables pretty much 
follow the model once you get into significant decompression.  They 
fiddled quite a bit with the numbers near the ndl's to stop the tables 
from being too conservative.  The heliox tables are a differnt story all 
together, they had to both patch the algorithm, and fiddle the numbers 
quite a bit, I recall.  

  Jody Svendsen
  MiG Technologies

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