By the very nature of the demand that they serve, emergency service systems require that timely service be readily available to those who need it. Yet, the distinct possibility exists that the closest facility will be occupied with another call for service, and when this primary responding unit...

The problem of determining optimal reorganization policies for databases which employ file structures with overflow chaining is studied. The dynamics of the file performance driven by update transactions and reorganizations is formulated as a stochastic control model which incorporates...