A system is disclosed for sealing a manufacturer’s joint andor the ends of a customized box. To ventilate the crankcase from the blow-by gases, ventilation lines are connected to the cylinder head covers and communicate with a negative pressure source, e. The DBR comprises a multilayer stack of various materials and may be formed on the substrate of the grating coupler. The real-time data and the predicted data are monitored, and a calibration and synchronization operation is initiated to update the first virtual system model in real-time when a difference between the real-time data and the predicted data exceeds a threshold. In a further embodiment, the strap adjusting mechanism is operative to provide a consistent tension between measurements.