Modern repeated measures analysis using mixed models in SPSS (1) Repeated measures analyse an introduction to the Mixed models (random effects) option in SPSS. Demonstrates different Covariance matrix types & how to use the Likelihood ratio test to evaluate different models. Robin Beaumont Full notes MCQ's etc at: http://ift.tt/1DZOj1O
Smaller is better for nanotube analysis: Variance spectroscopy technique advances nanoparticle analysis
A covariance matrix produced with a new technique at Rice University maps fluorescence signals from various species of single-walled carbon nanotubes that are beginning to aggregate in a sample. The matrix allows researchers to know which types of nanotubes (identified by their fluorescence spectra) have aggregated and in what amounts, in this case after four hours in solution.