A method and system is provided for integrating multiple client management polling functions. The retrieval unit retrieves a strong reflection object based on a signal strength which a frequency spectrum of a beat signal generated by mixing a transmission signal which is frequency-modulated and emitted and a reception signal which is formed in the transmission signal is reflected on a target indicates. Accordingly, the sub frame and the lower arm are separated off the front side frame by the separation mechanism. In the subsequent pipeline stage, each accelerator works on the next macroblock in the data stream, which was worked on by another one of the accelerators in the previous stage. With this system, it is possible to inventory commodities sold and stocked in a department store or a convenience store from a remote place. The hydraulic power unit for operation of the hydraulic cylinder is situated at least partly within the parts forming the hydraulic cylinder itself, preferably the piston head and or the piston rod.