An imaging apparatus capable of outputting a sensed image to a printing apparatus issues a print request command containing a parameter for designating a print mode to a PD printer apparatus connected via an interface. The determining may be based on a transmission mode of the wireless signal and a state of the wireless communication channel. A resource message identifying the set of local resources can be generated using a resource discovery and utilization application programming interface. Holding circuitry connected to the data output for the second duration holds the first data bit and the second sampling circuitry connects the second data bit inverted to the data output to enhance the held first data bit when the first and second data bits have different states. The dual analyte model may calculate a discrepancy between an actual insulin activity level and a theoretical insulin activity level. A stent including polymer members formed from the described composition is also disclosed.