A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A unitary valve assembly removably located inside the exterior profile of a nasal pillow mask uses positive airway pressure from a low-flow hose to automatically create an on-demand therapeutic air splint in the pharynx. The system further applies business rules representing the contractual provisions that are applicable to the requested transportation to determine responsibility for the cost of transportation, the authority of the requester to change the level of service or other aspects of the transportation, and the responsibility for the cost of transportation. An acoustic wave biosensor can realize optimum detection performance by detecting the characteristics of a detection environment and a detection target in real time during the operation of a dual mode sensor, and automatically switching between an SAW mode and an SSBW mode. The insulating film covers side surfaces of the semiconductor layers, and is disposed between the control electrodes. A pump mechanism is made of an electromagnetic pump mechanism formed by an electromagnetic driving coil 24 provided on an outer circumference of the vessel and a magnetic core 26 attached to an inner cylinder 12 disposed in the vessel.