本文评述国内关于城中村研究的主要文献，总结已有研究取得的主要成果和存在的不足，找到继续研究应当努力的方向。
This paper reviews the literature on domestic research of villages-in-city by summarizing the major achievements and shortcomings, as well as the direction for further study.
本论文观察了中国电视频道细分化的现实情况，总结了已有的研究成果。
In this thesis, I has observed the status quo of the subdivision of TV Channel in China.
介绍了数据管理的概念和特点，分析了数据管理的研究内容和存在问题，并着重对当前国内国外已有的研究进展状况进行了总结和归纳。
This paper introduced the concepts and characters of data management, analyzed the problems existing in the data management, and mainly summarized the research progress.
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