A technique for monitoring source addresses through statistical clustering of packets is disclosed. A bias electrode layer is formed on the surface of the substrate. 0% by weight, and wherein the composition exhibits a maximum viscosity value of 1\xd7103 mPa\xb7s or more in the viscosity-shear stress curve obtained, with respect to the composition, using a cone-plate type rotating viscometer in a shear rate region of from 1\xd710\u22123 s\u22121 to 1\xd7102 s\u22121 and at 25\xb0 C. In a further alternative, an input of the projection angle is accepted, and the projection plane is determined on the basis of the projection angle and the position of the view point. Compounds of particular interest are defined by Formula wherein X, A1, A2, A3, A4, R, R, R1 and R2 are as described in the specification . , concrete bridge abutments or culvert pipes.