A dynamic model based on variable matter element with parameters is applied to construct the early-warning model of airport safety.
运用可拓理论中基于参变量物元的动态评价模型，对机场安全预警模型进行了构建。
Although EVA is superior to income indicators theoretically, as for the set-up of the Early-warning model, it can not replace income indicators.
EVA虽然从理论上优越于会计收益指标，但是就预警模型的构建而言，它并不能取代会计收益指标。
Then the paper puts detailed description on research design, which consists of selecting samples, choosing variables and establishing the early-warning model.
接着是本文的研究设计，介绍了研究样本的选取、变量的选择以及财务困境预警的研究方法。
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