给出RCC8、主方位及尺寸关系转换成扩展矩形关系的转换算法；
The translating algorithm which converts the RCC8, cardinal direction and size relations into extended rectangle relations is given.
该设备必须能够不断地从一个环境跟踪用户全天下，调整为从一个主方位用户移动工作，然后再返回。
The device must be able to constantly track the user from one environment to the next throughout the day, adjusting as the user moves from a home orientation to work, and back again.
以2 0名区域管制员和2 0名大学生为被试，通过两种类型的空间主方位判断任务考察训练效应和方位效应。
With 20 center controllers and 20 college students as subjects, this research explored the training effect and direction effect on two types of spatially cardinal direction judgement tasks.
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