Undated photos are organized by estimating the date of each photo. The packet detecting unit determines whether a packet can be classified by a pre-established packet classification rule or a packet cannot be classified by the rules. The method additionally includes receiving, at the first maintenance end point, a second continuity check message that includes a traffic field. When the opening degree of the first valve part is maximum, the seal length of the external surface seal part along the moving direction of the valve body is shorter than the distance between the end surface seal part and the seat part along the moving direction of the valve body. The growth factors and physiological agent present in the nanocups are released. This ensures that the prosthesis is also supported on the particularly stable edge zones, and these edge zones do not have to be subjected to any substantial removal of material.