Paul R. Okamoto, Nghi Q. Lam, and Lynn E. Rehn, Physics of Crystal-to-Glass Transformations. Introduction. The Liquid-to-Glass Transition. Lattice Instability Models of the Crystal-to-Glass Transformation. The Generalized Lindemann Melting Criterion. Applications of the Lindemann Model to Solid-State Amorphization. Summary and Future Work. Michael E. Flatte and Jeff Buyers, Local Electronic Structure of Defects in Superconductors. Introduction. Bulk Properties of Defects in Superconductors. Techniques for Calculating the Local Properties of Defects in Superconductors. Analytic Solution of the Point Potential. Impurities in Superconductors with Isotropic Order Parameters. Impurities in Superconductors with Anisotropic Order Parameters. Impurities in Superconductors with Anisotropic Order Parameters. Brief Discussion of recent Results For Dynamical Spins. Summary. Peter Edwards, Roy Johnston,Friedrich Hensel, C. N. R. Rao, and David Tunstall, A Perspective on the Metal-Nonmetal Transition. From the Metallic to the Nonmetallic States of Matter. How Can We Visualize the Metal-Nonmetal Transition? Diverse Systems Exhibiting Metal-Nonmetal Transitions. Concluding Remarks. Index.