Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of data quality and model parameters on the quantitative
  phase analysis of X-ray diffraction data by the Rietveld method   The quality of X-ray powder diffraction data and the number and type of
refinable parameters have been examined with respect to their effect on
quantitative phase analysis (QPA) by the Rietveld method using data collected
from two samples from the QPA round robin [Madsen et al. J. Appl. Cryst.
(2001), 34, 409-26]. From these analyses of these best-case-scenario specimens,
a series of recommendations for minimum standards of data collection and
analysis are proposed. It is hoped that these will aid new QPA-by-Rietveld
users in their analyses.

9
The categories of this paper are: nlin
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics