Firstly, we set forth the background and significance of the research, introduced research methods (Introduction), carried through literature analysis and appraises at home and abroad (Chapter Two).

首先，阐述了研究的背景和意义，介绍了研究方法(引言)，接着从国外和国内两个角度进行了文献综述和简要评价(第二章)。

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New access-control methods will also be introduced as research into operating system security continues.

随着对操作系统安全性的深入研究，将会引入新的访问控制方法。

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In this section, I have introduced the frame and system, the core points of research and the major research methods of this paper.

在本部分中还简要介绍了该论文的体系框架、核心研究要点和主要的研究方法。

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Arguing that focus groups were never really all that effective in the first place, agencies and research facilities have introduced a variety of methods aimed at shaking up the traditional focus group approach.

FORBES: From Focus Groups to "Friend" Groups