An intelligent control platform for routing, switching and mixing audiovisual signals includes a program signal crosspoint matrix which is programmably and adaptively configurable to select between appropriate program sources and program destinations when the system is in a particular one of a number of operational modes. The composition is used to promote the transfer of heat from a source of heat such as an electronic device to a heat dissipation device such as a heat sink. A display device displays visible information with respect to the substitute color. To commit the distributed transaction, the incompatible database system aborts the subtransaction it is executing as part of the distributed transaction, while other participant database systems complete the distributed transaction using a two-phase commit to commit their respective subtransactions. Specifically, the ultrasonic waveguides comprises a first material having a higher acoustic impedance and a second material having a lower acoustic impedance. A sensor arrangement in the form of resistors mounted on the yieldable element to generate a signal in response to deformation or bending of the yieldable element.