EUROCONTROL MANUAL FOR AIRSPACE PLANNING 2(94)

曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者

If undertaken properly, Qualitative Assessment can prevent time and money being wasted on the preparation and running of (expensive) fast- and/or real-time simulation. Qualitative Assessment is an inexpensive way of critically determining whether a particular Terminal Airspace design solution is viable. It also provides the most freedom – especially because the relative costs of changing one’s mind are negligible when compared to changing a simulation specification – or worse still, a simulation already in progress.
Inasmuch as it is inadvisable to undertake a quantitative assessment without a corresponding Qualitative Assessment, it is generally inadvisable to proceed to implementation on the basis of a Qualitative Assessment alone. This is because of the disadvantages associated (particularly with stand-alone) Qualitative Assessment
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Tendency for assessment to be subjective as opposed to objective;

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Because it’s usually takes the form of debate/discussion, it is possible that

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particularly in an hierarchical Terminal Airspace design team, the Qualitative Assessment could reflect the most ‘authoritarian view’ (which may not necessarily be the ‘best’); or

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that the scope of solutions suggested by members of the Terminal Airspace design team could be limited to ‘pre-determined’ solutions (which may be

 

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inefficient in that they resolve the perceived as opposed to the real problem).
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Because the value of ‘qualitative’ assessment is often doubted (for lack of numerical ‘proof’), its ‘findings’ may be dismissed or ignored. (Note, however, that this effect can be mitigated by providing clear rationales substantiated with simulations.)

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Business Plans normally require justifiable, accountable figures on cost benefit analysis.

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This chapter has sought to explain the difference between quantitative and Qualitative Assessment, particularly in the validation phase. It has stressed that these two forms of assessment complement each other.
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3.1 PURPOSE OF AIRSPACE MODELLING ........................................................................ D-3-2

3.2 PRINCIPLES .................................................................................................................... D-3-2

3.3 ADVANTAGES & LIMITATIONS ..................................................................................... D-3-3
　
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