Throughput of a high-volume throughput-centric computer system is controlled by dynamically adjusting a concurrency level of a plurality of events being processed in a computer system to meet a predetermined target for utilization of one or more resources of a computer system. After depositing a first conducting film over the first insulating film including the holes, the first conducting film is subjected to first CMP, so as to form plugs from the first conducting film. The seal assembly, a cartridge, permits the first and second housings to rotate relative to each other in substantially fluid-tight relation except for the drilling fluid entering an outlet region at greatly reduced pressure. Various control strategies can be deployed to achieve aesthetically interesting light presentations which enhance ambiance within the passenger compartment. The systems and methods also support inquiries concerning particular short codes, leases, lessees, and usage prices. Optimized protocols and hardware for implementing the system are disclosed.