Hi Alan,
Would it be possible to get a license for one of my students laptops?
It's the guy who's done all the surface fitting work in the paper I sent
you recently. He's wanting to write up/finish a last bit of data
analysis from home so it would be really useful for him. I've attached
t
Dear Rietveld List,
Please ignore my last email which was sent to the list in error. An
unthinking use of "reply" for which I apologise.
John Evans
--
***
Dr John S. O. Evans,
Reader in Inorganic and Solid State Chemistry,
Departme
Hi all,
from time to time, the problem of zero values in the pattern
is discussed. I have done an indepth Bayesian approach:
Have assumed identical probability of all values prior to
measurement and have calculated the Bayesian distribution
of probabilities after having measured n counts, its est
Dear all
Version 4 of the Academic version of Bruker-AXS TOPAS, TOPAS-Academic, is now
available to degree-granting institutions comprising universities, university
run institutes, laboratories and schools. Bruker-AXS TOPAS shall be released
before the end of the year.This version is big step
Hello Joerg,
> -Having measured n counts, the estimated value is n+1
You might have a hard time convincing me on that one.
> -Having measured n counts, the esd is also sqrt(n+1)!
If n is zero then spending more time on the data collection might be better than
more time on the analysis.
> Thing
Dear Alan,Thanks for this announcement. We are of course very interested to obtain this new version, especially as we seem to be so lucky to get it for free ;-)Many thanks.Best regardsChristianOn Oct 11, 2006, at 9:56 PM, AlanCoelho wrote: Dear allVersion 4 of the Academic version of Bruker-AXS TO
Title: RE: About zero counts etc.
Dear all,
Jon's right - when the counts are very low - i.e. zeroes and ones around - then the correct Bayesian approach is to use Poisson statistics. This, as Jon said, has been tackled by Antoniadis et al. (Acta Cryst. (1990). A46, 692-711 Maximum-likelih
