To change a spatial relationship between two or more bones in a patient’s body, a wedge member is moved into a joint between the bones. This wireless proximity framework allows users of mobile computing devices to dynamically access services and applications available in a given geographic area without preinstalling software for each service or application. Electronic controller circuitry of the system is coupled for thermal demand control of the heat pumps and the thermal zone blowers for operation of the first heat pump during average thermal load and for operation of both heat pumps during greater thermal load. The first and second frequencies are selected such that substantially no acoustic energy propagates through the non-linear medium.