Update – October 2014

It’s time for an update on when SAUL will be out in a dive computer.

The bad news is – there’s nothing definite yet.

On the plus side, I have contacted some computer manufacturers and am continuing to identify and contact others whose computers would benefit from incorporating SAUL.  Still on the plus side, SAUL is completely dive-computer-ready, lacking only the specific software connection between it and any given computer (a user interface that will work with SAUL).  For this reason, I haven’t given up on a potential 2015 release of SAUL.  It’s a bit of a long-shot at this point, but not out of the question.

If you have a favourite mid-range dive computer in mind that you’d like to see SAUL in, feel free to suggest it to the manufacturer.  I’d welcome inquiries, whether or not it’s from one I have already contacted.

On to other matters.  Part of the reason I haven’t posted for a while (aside from efforts re SAUL) is an active research program.  I have a very capable young researcher from Mexico in my lab who’s now approaching the end of his 3 year term.  Together, we’ve produced a sizeable body of interesting research.  The downside to that is the somewhat tedious and time-consuming process of transforming that research into published papers.  With one substantial paper published this summer, there are still another 4 or 5 papers at various stages of their evolution towards a published state.

The focus of the research was on the fundamentals of bubble behaviour.  Along the way, some of what we’ve found has interesting implications for diving, including PFO’s, inner-ear DCS, muscle and joint DCS, and DCS in breath-hold diving.  I will be discussing some of this in future posts, as each relevant paper is published.  (The reason for waiting is so I can post the published paper in the Articles section at the same time.)



Update – October 2014 — 2 Comments

  1. As a diver, i don’t know how I can ‘promote’ to my favourite computer brands the ingregration of SAUL without seeing it, without experimentating it.
    Like Bühlmann or vpm, i think your algorithm should be made publicy available, if possible with example source code. In this case, non profil software could be made and dive profiles compared beetween other algorithms.
    It’s not incompatible with commercial use, you’ve only to use an adequate licence.

    • Actually, the basis of the algorithm and sample values of the model’s constants are available, and have been for some time. They are contained in my 2007 article, published in the Journal of Applied Physiology and in the appendix to it (the latter simply labelled “Appendix”). Both are posted in the Articles section. My source code is not available at this time.
      Some comparisons with other algorithms can be found in that article, in some of my blog posts, and in two more general articles (also posted in the Articles section). These are: “Coming Soon to a Dive Computer Near You” and “To Stop or Not to Stop – and Why” that were variously published in Diver magazine, in Alert Europe, Alert South Pacific, and Alert Africa. Direct comparison with other algorithms is not strictly feasible because SAUL is probability-based, and does not have set NDL’s . The type of comparison that can be made is like the one I did comparing SAUL to PADI, in the post just previous to this one.
      Reading the articles and blog posts may answer some of your questions.

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