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Christina, >My question is about the DCIEM algorithm. I have both the DCIEM >Manual and John Lippman's _Deeper Into Diving_, which gives some >background about the DCIEM table development, but neither of these >say anything about the algorithm. Is it published somewhere, or is >it proprietary? > >If it is not published anywhere, just how hard would it be to reverse >engineer it from the multitude of tables they give you in the manual? 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. regards, David Doolette ddoolett@me*.ad*.ed*.au*
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