A sports board comprises a foam core, a top layer bonded to a top surface of the foam core and a bottom layer bonded to a bottom surface of the foam core. A boundary between the first gate insulating film and the second gate insulating film is composed of a straight portion parallel to a side of the pattern of the body diffusion layer and a corner portion surrounding an vertex of the pattern of the body diffusion layer from a distance. The device receives, from the user, traffic destined for the selected at least one of the virtual core network, the virtual network resource, and the virtual system, and provides the traffic to the selected at least one of the virtual core network, the virtual network resource, and the virtual system. The depression receives a head of the rivet and positionally aligns the rivet with an upper tool unit as the rivet is guided across the first inclined surface toward the second inclined surface. The method may be embodied as a computer program that controls the operation of a processor.