We describe the design, construction, and preliminary operation of a hardware track-finder used in the trigger for the Collider Detector at Fermilab (CDF). The track-finder is a 19 stage digital pipeline which uses fast timing information from the central tracking chamber (CTC) to find high momentum tracks. It
then transmits information about the tracks to the CDF trigger system for Nike Air Max 1 Og
a final decision. The track finder has 8 programmable thresholds between 2.5 and 15 GeV. A search for all high momentum tracks in the central tracking chamber can be completed in an average of 2.5 μs per event. The momentum resolution is δPt/Pt2 = 3.5%, with a high efficiency that is independent of track density.
The advance booking of orders (ABO) is the practice of selling units of an item (either products or services) in advance of the actual availability of the item. We consider the question of Cheap Air Max 90
whether or not advance bookings should be offered. Closed-form analytical results are derived for the expected profits for the classic single-period inventory (newsboy) problem both with and without advance bookings. These two profit expressions allow us to quantify the benefits of ABO. The benefits include both the yield-management benefits associated with the stimulation of demand and the planning and control benefits of using advance booking as a leading indicator of total demand.