The present invention pertains generally to a self-locking gear that includes an input shaft, a collar, a locking mechanism, and an output member. The transistors can be provided in groups with each group having a different bias voltage applied thereto or each group of transistors can have a different input signal applied thereto. Then, the environmental information is processed at the base device according to a user information of an individual user, and processed environmental information is provided from the base device to the individual user through a network connecting the users and the base device. The method continues after the scanning by tuning to the channel supporting the higher layer protocol communication to transmit at least one outbound Internet packet. Embodiments of the present invention further include a method and computer program product for updating a system including a plurality of server instances in substantially the same manner described above. The composite system is then heated in a sintering furnace to coalesce the matrix component into a matrix phase having a network of interconnected pores, and to effect infiltration of the infiltrant layer into these pores to form the composite material of the present invention.