The present invention refers to an articulated mattress that does not need any specific frame for its perfect functioning, mattress that may be provided with a massage device, being destined to the general market, having particular application in the field of health and prevention and being included in the group of products that provide comfort and wellbeing. The access network is operable pursuant to the cdma2000 the operational specification, and the core network is operable pursuant to the 3GPP architecture using GPRS. One version of the device may have an inlet tube with a nominal diameter or dimension, where the inlet tube transitions to a pair of surfaces that are close together. The contact pads in each column may be staggered with respect to the contact pads in adjacent columns such that each contact pad in a given column is horizontally adjacent to associated gaps in the adjacent columns. The signal cancellation tuner includes a demultiplexer for demultiplexing a received signal representing the plurality of transponder signals into a number of decimated signals, each transponder signal conveying a bit stream, and a transform element operative on the number of decimated signals for providing at least two of the bitstreams simultaneously. By applying the invention to an inkjet print head with a plurality of nozzles, the temperature of each nozzle can be obtained selectively.