A continuously adjustable rotation device includes a base, a first connection element combined with the base, a ring buckle, a transmission disc, a second connection element, and a rotation controller. Also provided is a computer network apparatus or system for rewarding a user of a web-based application. The image is combined with foreground and background information to produce a final image. When the information in a faulty packet is retransmitted, at least a portion of the information suppressed by the puncturing of the RCPTC in the previous transmission is transmitted.