A flexible material includes a plurality of separate resilient elements joined to a flexible, resiliently stretchable substrate. Therefore, service lives of storage devices in the second storage device subset may be extended relatively by shortening service lives of storage devices in the first storage device subset. The observation unit makes a prediction relating to the usability of the relay or of the contactor on the basis of the measured values and a model. In one embodiment, a direct RF signal transmission path is defined in part by the combination of the resonators, RF signal transmission bridges on each of the monoblocks that interconnect the resonators on each of the monoblocks, and RF signal transmission windows between and interconnecting the resonators of adjacent monoblocks. 6 cm in diameter and rose in color with a yellow-orange colored throat; trailing, compact growth habit; early flowering response; and suitable for use with hanging basket planters, combination planters and ground cover under full sunlight-and slight shade. The parameters relevant for the quality of service are provided via an authentication of the first network element.