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       Dedicated to the memory of Dr. Robert Machol, former
      chief scientists of the Federal Aviation Agency 
       To improve safety and reduce air traffic
      controller workload, the Federal Aviation Agency (FAA) is considering
      adding software to the air traffic control system that would automatically
      detect potential aircraft flight path conflicts and alert the controller. 
      To that end, an analyst at the FAA has posed the following
      problems: 
       Requirement A: Given two airplanes flying in
      space, when should the air traffic controller consider the objects to be
      too close and to require intervention? 
       Requirement B: An airspace sextor is the
      section of three-dimensional airspace that one air traffic controller
      controls.  Given any airspace
      sector, how do we measure how complex it is from an air traffic workload
      perspective?  To what extent
      is complexity determined by the number of aircraft simultaneously passing
      through that sector 
      (1) at any one instant? 
      (2) during any given interval of time? 
      (3) during a particular time of day? 
       How does the number of potential conflicts
      arising during those periods affect complexity? 
      Does the presence of additional software tools to automatically
      predict conflicts and alert the controller reduce or add to this
      complexity? 
       In additon to the guidelines for your report,
      write a summary (no more than two pages) that the FAA analyst can present
      to Jane Garvey, the FAA Adminstrator, to defend your conclusion. 
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