Artificial Neural Networks (ANN) Approach in Diagnostics of Polycythemia Vera

A plastic buckle comprises an obverse half buckle member provided with an engaging piece and snap engaging means and a reverse half buckle member provided at the positions corresponding to those of the first half buckle member with surface portions adapted to be caught by the engaging piece and snapping engaging means. These two half buckle members are assembled into one complete buckle by fastening the surface portions to the engaging portion and rotating the two half buckle members toward each other with the point of contact thereof serving as the fulcrum of rotation until they come into fast union.