The present invention provides a method of data path switching. Peer-reviewed scientific publications are analyzed to identify pertinent risk factors for developing disease processes and their possible complications. Air channels within the cover communicate between the segments to allow air pressure equalization among the several segments during use. The similarity degree calculation section calculates the degree of similarity between the criterion diagram and the comparative diagram based on the computation elements and the signal lines for which the correspondence is generated. The invention further includes means to replace the bearing assembly and winding that can be used with the motor and a method of assembly.