The present invention relates to an upright vacuum cleaner including a housing and a nozzle base having a main suction opening. In the invention, a rotation impeder is in between the roller element and roller drill bit body and upon uneven rotation of the roller element which indicates that the roller element bearing may fail, the rotation impeder impedes the rotation of the roller element. However, the provisioning RF coverage region is otherwise confined so that a plurality of other mobile communication devices of the WLAN are restricted from access therefrom during the provisioning procedure. The codebook is constructed from a compound data set, where the compound data set includes real data vectors and artificial data vectors. In another embodiment, the core has repeat units of about 0% to about 25% by weight of a conjugated diene unit, about 70% to about 85% by weight of an aromatic vinyl unit, and about 15% to about 30% by weight of a crosslinking monomer unit. Rules, criteria, factors, and the like used by the SOA services can be customized at an arbitrary level of complexity for specific applications and application cases.