Abstract: A method of forecasting the demand for ambulance services based upon a determination from the historical record of the number of currently active calls at the time each new call is received. The method may utilize records of specific calls history including the time each call was received and the time each call was completed, or it may use information on the number of calls received each hour to simulate specific calls history. The method may be extended to a "third dimension" to better account for the effect of service demands and staffing levels in preceding hours. The method has application to other services having the characteristics of limited available service resources, randomly occurring service requests but historically-repeating levels of demand, and relatively long service times.

Abstract: A bolt and keeper secure nuclear steam generation isolation dam segments in assembled relation. The bolt is rotated into locked position with its handle in a slot as a transverse projection on the bolt end is moved along a ramp into a securing notch against the bias of a compressible rubber spring.