A technique for detecting abuse of protected health information stored in a medical information system is presented. Accordingly, a compact-sized cyclone dust-collecting apparatus is realized and maintenance management of the vacuum cleaner becomes easy. The sleeve may be manufactured from polypropylene, polyethylene or other materials having satisfactory mechanical properties, primarily that the material be capable of withstanding sufficient plastic deformation to cause the material to conform to the shape of the threads of the anchor bolts without the material failing. Network operations may include use of link space information in providing network management applications such as automatic fault management, automatic performance management, operation advisories, andor the like. The elastic elements are symmetrically disposed between the fixed plate and the movable member.