  Considering both "large-U" and "small-U" orbitals it is found that the
high-Tc cuprates are characterized by a striped structure, and three types of
carriers: polaron-like "stripons" carrying charge, "quasielectrons" carrying
charge and spin, and "svivons" carrying spin and lattice distortion. It is
shown that this electronic structure leads to the anomalous physical properties
of the cuprates, and specifically the systematic behavior of the resistivity,
Hall constant, and thermoelectric power. High-Tc pairing results from
transitions between pair states of quasielectrons and stripons through the
exchange of svivons. A pseudogap phase occurs when pairing takes place above
the temperature where stripons become coherent, and this temperature determines
the Uemura limit.
