Technical discussion on VPM

[Gopichand Paturi]

Hi Robert (atdotde),
Thanks for the reply.

Well I am a bit confused right now. Can you give me some kind of plan so
that I can proceed from now on.
What do you expect me to do further? Setting a direction for me to work on
would actually help.

I also need help regarding the Buhlmann algorithm since I am not getting
the exact research paper that he published, if you have one please send me.

As the application dates for GSOC are coming, I want to work in a planned
manner.
Also I want to make a good application and for that knowing the subject is
critical as far I see it.

Also since my exams are in between the application dates...I have little
time to waste.
So going through various blogs and sites would help me but as I see it I
can do that even after 21st of March. But working on exact subject as of
now would greatly benefit me.

Let me know your suggestions,

Regards,
Gopichand.


On Wed, Mar 5, 2014 at 12:39 PM, Robert C. Helling <helling at atdotde.de>wrote:

>
> On 04 Mar 2014, at 19:50, Gopichand Paturi <gopichandpaturi at gmail.com>
> wrote:
>
> Hi Gopichand,
>
> > Well I would like to tell you my progress.
> > First thing first let me tell you what I am familiarizing with.
> >
>
> very good, you have done a lot of reading.
>
> > I am now first familiarizing myself with the "science part of
> decompression"
> >
> > My plan is that I will complete science part and later I want to involve
> myself in Math part of it(with your help). Lastly I will familiarize deco.c
> code for bulhmann to get a grip of the problem.
> >
>
> From my perspective as a theoretical physicist, there is not really a
> distinction between "science" and "math", but whatever works.
>
> Regarding the gradient factor part of the code: The commit message at that
> time contained an extended discussion (including a mathematica notebook)
> how to obtain those formulas. Use git blame and the mailing list archive.
>
> > I familiarized myself with the following since last few days
> > 1. I learnt about the problems involved in diving.
> >
> > 2. Came to know the role of pressure in diving. The way ambient
> pressures               operate,in the water and their effect on lungs.
> >
> > 3. I went through Henry's law, later learnt about units involved in the
> calculations       in dealing with partial pressures like ATA  etc.
>
>
> OK ok.
> >
> > 4. I came to know about Oxygen problems like Hypoxia,Oxygen Toxicity,CNS
> and     Nitrogen's narcosis. By this I meant I also learnt why and when
> they occur.
> >
>
> In a first round, you can safely ignore everything related to oxygen as
> this gas plays no direct role in decompression/decompression sickness.
>
> > 5. I involved myself for quite sometime in Decompression sickness and
>                    Decompression...And how to avoid it like planned ascent
> etc.
> >
> > 6. I also came across gas mixtures involved in decompression like
>                     Trimix ,Heliox, Nitrox.
> >
> > 7. Also I came across microbubbles,bubbles ...how & why they expand in
> the           solution of blood etc.
> >
> > Currently I am going through Bulhmann Algorithm....which hopefully I
> would complete in a day or two.
> >
> > Well I am not clear about one thing ...Is it past patterns and
> experiences that drive decompression algorithms...or do we have explicit
> theory that involves perfect calcualtions to form the decompression tables?
> >
>
> AS others wrote before: This is not an exact science, more  a summary of
> what seems to work (in both controlled experiments both with tissue,
> animals and humans) as well as data derived from analyzing many real world
> dives w.r.t. their outcome regarding decompression sickness.
>
> In any case, the whole market of decompression models is not supposed to
> be deterministic, there are far too many factors beyond our control that
> are involved. The only thing one can hope for is to reduce the probability
> of something sever happening to acceptable levels (I guess one accident per
> 10000 dives is generally accepted).
>
>
> Best
> Robert
>
>
> --
>
> .oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oO
> Robert C. Helling     Elite Master Course Theoretical and Mathematical
> Physics
>                       Scientific Coordinator
>                       Ludwig Maximilians Universitaet Muenchen, Dept.
> Physik
> print "Just another   Phone: +49 89 2180-4523  Theresienstr. 39, rm. B339
>     stupid .sig\n";   http://www.atdotde.de
>
>
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