An exemplary optical plate includes a transparent plate and a light diffusion layer. The size of the image is maximized in relation to the size of the screen and readability of the text in the image is determined by using graphic parameters. Upon detection of an access request, a corresponding request message is generated and transmitting substantially immediately to a base station, thereby minimizing latency in the access process. The monitored parameter is the load produced as the test specimen resists pivoting of the first support. Armhole side edge portions of the left and right front collar knitting portions are made to face edges of the back, knitted loops of the front collar knitting portion and the back are continuously knit so as to knit a back collar knitting portion to the back, and then all knitted loops are cast off.