The study of the effects of dimensional ity and disorder on phase
transitions, electronic transport, and superconductivity has become an
important field of research in condensed matter physics. These effects
are both classical and quantum mechanical in nature and are observed
universally in urealu materials. What may at first glance seem a diverse
collection of lectures which form the chapters of these proceedings is
in fact, an attempt to demon- strate the commonality,
inter-relationship, and general applica- bility of the phenomena of
localization, percolation, and macro- scopic quantum effects on
electrical transport and superconduc- tivity in disordered solids. The
theory of these phenomena is presented in a complete, yet,
self-contained fashion and the inter-relationship between the topics is
emphasized. An extensive treatment of experimental results is also
included, both those which have stimulated the theory as well as those
that have confirmed it. Many of the phenomena investigated in this field
also have technological significance. For example, the nature of
electronic localization in metals in which one or more dimensions are
con- strained is very important when one attempts to predict the be-
havior of the metallic interconnects in ultra-miniature circuits.