The most likely candidate for variable persistence is a simple string value.

变量持续性最有可能的候选对象，是一个简单的字符串值。

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The main difference of college students learning behavior is persistence, so the study chooses learning persistence as a dependent variable.

大学生学习行为的差别，其一就表现在行为的坚持性，所以本研究选取学习坚持性作为本研究的变量。

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Then we go on with the correlation between multi-variable: fractional co-integration and co-persistence in variance, and discuss their modeling method.

然后 ，指出了多个变量波动之间协同关系的研究方法 ：分数维协整和方差协同持续 ，并介绍了各自的建模方法。

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Then we go on with the correlation between multi-variable: fractional co-integration and co-persistence in variance, and discuss their modeling method.

然后 ，指出了多个变量波动之间协同关系的研究方法 ：分数维协整和方差协同持续 ，并介绍了各自的建模方法。

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