A spin torque oscillator is described in which the conventional Field Generation Layer is replaced by a bilayer, one of whose members exhibits perpendicular magnetic anisotropy while the other exhibits conventional in-plane anisotropy. The selection of the packet data communication network is based on the transmission of a specific network indication parameter from the terminal station of the mobile radio communication network. for preventing or treating bone conditions which are associated with increased calcium depletion or resorption or in which stimulation of bone formation and calcium fixation in the bone is desirable. Thus, a contact can be formed without damage to the interlayer dielectric layer due to residual stress. The insert may have a default shape when at rest, but can have its shape changed when external forces are placed thereon.