Methods and tools for cleaning pipes or pipe networks based on characteristics of pipes and debris in the pipes. A major hollow shaft is located through the end-plate chambers of the inflatable wheel to rotatably mount the wheel in the open space defined by the sidewalls of the base. The semiconductor chip is fixed by its top side in flip-chip arrangement on a first and a second external connection strip for the first electrode and the control electrode. Yet further, the method, apparatus and article can generate a promotional message on one or more playing cards. By choosing high order polynomial kernels, multi-point statistics and therefore geological realism of the updated random fields can be preserved.