In an embodiment, an application server is configured to manage privacy settings of a subscriber for one or more social networking services. The first instruction format defines a register-addressing field of a predetermined size, while the second instruction format defines a register-addressing field of a size larger than that of the register-addressing field defined by the first instruction format. The inorganic carbides of the present invention also emit high-brightness white light source in low vacuum condition and induce plasma gas discharge emission in the presence of a trace of inert gas molecules such as nitrogen and argon.