Starting in the melt, proceeding to the transition region and continuing into the glassy state, sets of equilibrium, and non-equilibrium processes are considere.d We examine the consequences of a unified view dervied from a lattice-hole model, involving a hole fraction h to account for the structural disorder. The role of h as a free volume quantity is explored in various processes. A comparison of h with a free volume quantity directly measured by positron spetroscopy shows a gratifying ocncordance in the melt. Possible resolutions of differneces in the glass are examined. Correlations between equation of state and other physical properties in melt and glass with h as the connecting bridge are extended to time dependent processes.
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