Disclosed is a unison ring assembly. The image encoder encodes an input image to obtain encoded data, compares the input image with a reference image, generates error information identifying parts of the input image that are changed with respect to the reference image, and outputs the encoded data and the error information. The first diffusion member includes a plurality of edges each having a curved shape and extending between the exit surface and a vertex of the first diffusion member. Using Hidden Markov Models, and appropriate grammars and dictionaries conditioned by the selections made by the user, the speech representing the user’s query is fully decoded into text at the server. Whether the measurement results corresponding to the femtocell satisfy threshold settings is determined in response to the connection request, wherein the measurement results include a path loss corresponding to the femtocell. The composition has a pressure exponent of less than 0.