A method and system for providing protection of data communications in packet-based networks is provided, using a combination of unicast to multicast conversion and providing formation of virtual output queues which are separate for each pair of the target port and protection ports on the target network device. The hydrocarbon feed stream comprises an aromatic compound, a nitrogen compound, and an unsaturated aliphatic compound. In the apparatuses and methods, acoustic characteristics and a voicing model are simultaneously applied to a frame, which is an audio compression processing unit. Also disclosed are methods for the manufacture of the ceramic articles described herein. The EBP structure can indicate a boundary point for more than two partitions allowing a stream to be partitioned in several ways according to different standards. The object placement managing unit controls whether or not to change the position or direction of the second object according to a positional relationship between an active area determined based on the position of the first object and differing from the passive area, and the judging area.