Disclosed herein are new semiconductor materials prepared from dithienylvinylene copolymers with aromatic or heteroaromatic \u03c0-conjugated systems. In at least one embodiment, an injector is commanded to actuate, data about a current associated with the command is collected, and a determination is made regarding whether the injector is functioning properly based on the data. Additionally, the xByB coder can operate without row or column crossing for efficient timing in high-speed applications. The slope-adjusted correlation between analyte concentrations and output signals may be used to determine analyte concentrations having improved accuracy andor precision from output signals including components attributable to bias. The devices are assigned to a number of contention groups equal to the total number of management time slots in a superframe cycle. The gelatin-based formulation includes gelatin, lake pigment, and a sufficient amount of fatty acid to prevent cross-linking between the gelatin and the cations released from the lake pigment.