A method, system and computer program product for building decision diagrams efficiently in a structural network representation of a digital circuit using a dynamic resource constrained and interleaved depth-first-search and modified breadth-first-search schedule is disclosed. The chassis skirt panel is mounted below a truck body on at least one side of the vehicle and is set in a track allowing the panel to be moved back and forth. In a second embodiment, a slave device acting as a bridge receives a burst of indefinite length and translates the bus request into one with a predetermined fixed length for application to a device controller. After an entry has been made in the state table, or the routing rule has timed out, the port associated with the original NAT routing rule is removed and the same port can be re-used to establish another connection without disrupting active connections. It helps the user to keep in a vertical state in water so as to stabilize the gravity center and keep the head out of the water surface.