A method of fabricating a core for a ceramic shell mold is disclosed. The presence application has at least one first portion for collecting data regarding states of activity of the target agent resources, and at least one second portion for integrating the data and rendering the agent states to the subscribing applications. In one implementation, the processor is programmable and has an instruction set that includes an instruction for invoking the searching apparatus to search for a specified reference string in the packet starting at an unknown location within a range of the packet. The user device receives, decrypts and stores the second key. In addition, an angle between the first surface of the transparent substrate and the platform is not equal to zero degree, and the better is about 90 degree. The method comprises comparing a target signal quality value with a received signal quality value and providing the results of the comparing step to the transmitter to adjust transmit power based on the comparing step.