  Thermodynamics and kinetics are thought to be linked in glass transitions.
The quantitative predictions of &#61537;-relaxation activation barriers
provided by the theory of glasses based on random first order transitions are
compared with experiment for 44 substances. The agreement found between the
predicted activation energies near Tg and experiment is excellent. These
predictions depend on the configurational heat capacity change on vitrification
and the entropy of melting the crystal which are experimental inputs.
