And he adopted sociological methodology combined with empirical study and some collected materials from Chinese literature of history study.
他使用了社会学的研究方法，并结合传统的实证史学方法，也从中国史籍里面找一些材料。
2
The paper may examine a social movement not covered in the course materials or some aspect (theoretical or empirical) of the course materials, for example.
论文可以研究课程材料中没有包含的一次社会运动或者课程涉及的某方面（理论或实践均可）。
3
And even there are some, they are almost theoretical studies, lacking empirical research into the present situation of authenticity of teaching materials.