Re: [R] parameter assessment in differential equation

2008-10-15 Thread Ben Bolker 
Benoit Boulinguiez benoit.boulinguiez at ensc-rennes.fr writes:
 
 I'd like to know whether R is capable to assess parameters in a model
 describing the kinetic of a pollutant adsorption onto activated carbon.
 

  Start with the deSolve package (especially demo(CCL4model))

  Ben Bolker

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[R] parameter assessment in differential equation

2008-10-15 Thread Benoit Boulinguiez 
Hi,
 
I'd like to know whether R is capable to assess parameters in a model
describing the kinetic of a pollutant adsorption onto activated carbon.
 
A common relation is for instance the Adam-Bohart-Thomas' one:
 
dx/dt = K1 * (qm-x)*C - K2x
where {K1,K2} are the unknown paramters and {qm,C} are known parameters
 
Of course I get experimental data sets of measured x as a function of time.
 
If R can help to handle that, which functions have to be used (diff, optim,
nls...)

Regards/Cordialement

-
Benoit Boulinguiez
Ph.D
Ecole de Chimie de Rennes (ENSCR) Bureau 1.20
Equipe CIP UMR CNRS 6226 Sciences Chimiques de Rennes
Campus de Beaulieu, 263 Avenue du Général Leclerc
35700 Rennes, France
Tel 33 (0)2 23 23 80 83
Fax 33 (0)2 23 23 81 20
http://www.ensc-rennes.fr/ 

 

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