There is provided a radio device including an antenna, a first impedance converting circuit, a second impedance converting circuit and a differential output unit. Probability model selection can be formulated as an optimization problem with linear order constraints and a non-linear objective function. In some embodiments, the TMD mass comprises fluid pumped by the pump to fully or partially fill a housing, the fluid being gravitationally drained therefrom when the pump is not operating. A visual image displayed on the monitor is based on thus divided signal intensity. Also disclosed are methods to identify CystC homologues that are antagonists or inhibitors of TGF-\u03b2 and compositions and therapeutic methods using CystC and homologues thereof to regulate the activity of TGF-\u03b2, and TGF-\u03b2-mediated tumor malignancy and invasion and other TGF-\u03b2-mediated fibrotic or proliferative conditions and diseases. Therefore, a voltage level reached at full charge of a battery may be raised in a simple and efficient way.