A method of tracking a target includes receiving an observed depth image of the target from a source and obtaining a posed model of the target. A method of making the siloxane includes charging abcd, a platinum catalyst, and an alkene of the formula CR\u20322\u2550CR\u2032\u2014Y\u2014Z or CR\u20322\u2550CR\u2032\u2014Z into a reactor to form the siloxane. Upon detection of the error or failure associated with the first storage unit, the synchronous data mirroring relationship between the first storage unit and the second storage unit is terminated and the host is directed to write data updates directly to the second storage unit. The different angle is configured to facilitate disengagement of the actuator component and clamp for a smaller movement of the actuator component along the actuator movement axis than would have been the case in the absence of such configuration, thereby allowing a compact construction of the assembly. A lock ring groove is formed in one of the first plate, the second plate, and between the first plate and the second plate. Alternatively, the cathode andor electrolyte may be shaped or thickened to reduce or prevent diffusion of oxygen ions therethrough.