A system and method that addresses the issue of inducing and exploiting multi-user diversity in, e. The high-level local manager is configured to allocate a new virtual machine or re-allocate an already running virtual machine. In this case, an absolute value of a voltage of the first pulse is different from an absolute value of a voltage of the second pulse. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data. The barrier layer is formed by natural oxidation of an ultra-thin Al or Hf\u2014Al layer deposited on an electrode whose surface has first been treated to form an oxygen surfactant layer, the oxygen within the surfactant layer being adsorbed within the ultra-thin layer to produce a uniform and stable Al2O3 stoichiometry in the tunneling barrier layer. Mirror-image and staggered bottle storage embodiments are described.