A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a blood reservoir, and to substantially reduce blood-air interface. The switch module includes a circuit board, an infrared light receiver, at least one light emitting unit and a cover. It is determined if the scheduler is authorized to scheduler a recording on behalf of the recipient. Compared with the prior arts, the present invention is advantageous in reasonable structural design, convenient use and high imaging quality, especially satisfactory effect of focused inspection to some suspicious areas. Thus, measurement time may be reduced. The semantic graph can be used to run subscriptions over interconnected semantic servers where each server can be capable of coupling to data sources, client applications and other semantic servers.