Based on open logic,some concepts such as new premise,rejection by facts,e-reconstruction, e-epistemic process and its limit,are defined for the default theory T=(D,W). The extensions"properties,when W changing,are studied,and the related theorems proved.
本文基于开放逻辑理论，给出了缺省理论T＝＜D，W＞扩充E的新假设，事实反驳、e-重构、e-认识进程及其极限等概念的意义，讨论了W变化时新扩充的变化规律，并证明了相关的定理，本文还建立了缺省理论的一个动态描述过程，证明了其极限是某一特定问题的经验公式集，最后与相关工作进行了比较。
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接下来是最后一个戏剧元素——结局或决议，这时所有开放的情节都必须按符合逻辑的方式联系起来。
That's followed by the final dramatic element—the denouement or the resolution, when all the loose ends have to be tied up in a logical way.
但是最棒的一个优点是：由于该工具使用PHP编写并且可以作为开放源码免费使用，因此您可以根据业务逻辑和安装需求对它进行定制。
But one of the best advantages is that, since the tool is written in PHP and available freely as open source, you can customize it with your own business logic and installation requirements.
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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