流行的 Presentation Model （请参阅 参考资料） 提倡将应用程序的状态与业务逻辑分开放入模型层中，而模型层是从视图的 GUI 控件中分离出来的。

The popular Presentation Model (see Resources) advocates separating out the state and business logic of an application into a model layer that is separate from the GUI controls in the view.

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方法：运用文献资料法、逻辑分析法和数学模型法，对奥运会门票的定价策略进行研究。

Used the methods of documentary, logic analyses and mathematics models, the authors had carried out the research on price-setting strategies of the Olympic Games admission ticket.

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