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Which of the following databases can retrieve master's and doctoral dissertations?
Wanfang, China Guotu and other self-built doctoral and master's degree databases and Peking University doctoral and master's degree knowledge network!

Doctoral thesis type

In order to explore and master the writing rules and characteristics of papers, it is necessary to classify papers. Because the content and nature of the paper itself are different, the research fields, objects, methods and expressions are different, and the classification methods of the paper are also different.

According to the different contents and research methods, the paper can be divided into theoretical papers, experimental papers, descriptive papers and design papers.

There is also a comprehensive classification, that is, the papers are divided into four categories: thematic, argumentative, comprehensive and comprehensive:

Theme type

Based on the analysis of previous research results, this paper expresses opinions in the form of direct discussion and puts forward academic problems of a certain subject from the front.

Debate type

This is a paper aimed at others' views on an academic problem of a certain subject, with sufficient arguments, focusing on exposing its shortcomings or mistakes, and expressing opinions through debate.

Summary type

This is a kind of paper that introduces or comments on an academic problem of a certain subject on the basis of summarizing the research results of predecessors or present people to express their opinions.

Synthetic type

This is a paper written by organically combining summary and demonstration.

Reference to the above content: Baidu Encyclopedia-Doctoral Thesis