How to select documents for literature review? For example, I can't finish reading more than 200 search results. How to select documents

When writing a literature review , We need to aim at our own direction , Find similar papers to read , Understand what questions to answer in the article , Through what technical means to prove , What are the conclusions ？ From these articles , Understand the research ideas , Logical inference , Learning technology and methods .

One 、 How to find references
We can find references from the following points ：

Palm bridge scientific research 【 One stop scientific research service platform 】

（ Click here to find 、 Download references ）

· key word 、 Keyword search
key word 、 The key words must be chosen , such , In order to ensure that the content you want is comprehensive . because , Change the subject word , New content can appear .
· Search for a scholar
Learn about scholars who have made achievements in the research field , Look for his recent articles .
· Refer to the literature review
If there is a review related to one's own topic or a breakthrough point , The original research papers can be found according to the corresponding references .
· Pay attention to the reference value of the article
The impact factor of the publication 、 The number of citations can reflect the reference value of the article . But pay attention to how other articles quoting this article evaluate this article .

Two 、 The types and selection of references for review papers
After collecting enough literature , We need to screen the literature . In the selection of literature review references , We often get entangled in the literature that has been used to review papers 、 Classic literature 、 Selection of new documents ：
· Classic literature It refers to the literature that first proposed this theory or concept , This document usually has a long history , The new literature refers to the literature in recent years .
· There are literatures that have been used to summarize the papers , It is inevitable to trace this kind of literature , Even a very good thing . Secondary literature can provide you with reference , Quote secondary literature , You also need to find and read . even to the extent that , There are some primary literatures that are not completely accurate in describing secondary literatures .
· When writing literature review of journal research papers , The use of classical literature depends on the situation , and New literature It must be necessary , Pay particular attention to the use of literature from the last two years . When writing a literature review of a dissertation or journal review paper , Both classical literature and new literature should be considered , You can first introduce the origin of this theory or concept by quoting classical literature , After that, new literatures are used to introduce recent research hotspots and new breakthroughs .

besides , Attention should also be paid to the selection of literature in literature review ：
· Don't quote any literature that you haven't read carefully ;
· Don't quote or carefully quote papers in informal publications ;
· Don't try to quote celebrities' works without reference ;
· The literature that deviates from the subject of the thesis will not be cited ;
· Not enough classic literature is not cited .

3、 ... and 、 How to arrange references
After downloading the literature , We need to sort out the literature ：
· When downloading electronic documents （caj,pdf,html）, Paste the title of the article as a file name （ File names cannot have special symbols ）;
· Different themes are stored in different folders . The title of the folder should be short ;
· The literature I have read is put in a sub folder , At least we should separate the useful from the useless ;
· According to the degree of importance of important documents, add 001,002,003 Number , Then arrange the icons by name , The most important literature is at the top . And important literature should be tracked . With luck you can get more clues ; Bad luck , Find someone else ahead , Revise your experiment accordingly .

Four 、 How to read references efficiently
The most important parts of a document are ： Chart , Discuss , Text results , Method . After being familiar with a field , I can grasp the method of the article only by reading the charts and their explanatory words 、 result , Grasp the most necessary information in the shortest time . Or the development of regular search for new articles only need to see the abstract 、 Charts are OK , Some involve new methods or breakthrough results , Look at the discussion , Text results and methods .

After searching the references , We need to improve our reading efficiency ：
1、 The three steps for a first look at the literature ：
· Read through the subheadings first , That is to say results part , Make clear the train of thought and internal connection of the article .
· See the result diagram and notes corresponding to each subheading , Know what means the article uses to test scientific hypotheses , Mark where you don't understand .
· Finally, read the full text , Look for specific solutions in the text according to the marks , Do a good job of reading summary , Note that the author is discussion Part of the writing methods and classical sentence patterns .

2、 Questions to prepare before reading through the article ：
1. What problems have the literature solved ？ Whether new mechanisms have been found 、 new biomarker It is also a new drug target and so on .
2. Is this important ？ Why is it important ？ This is in introduction In it, the author will explain , That is, the background and significance of the article .
3. What assumptions does the author put forward to solve the above problems ？ What is the theoretical basis ？
4. What methods do the authors use to test their hypothesis ？ What else do you know ？ Pay attention to your laboratory / Which of these methods can you implement at hand , If you encounter such problems in the future, you can use .
5. Whether these methods meet the needs of argumentation Hypothesis ？ Is it not comprehensive enough? There can be other supplements ？ Also consider what the experimental materials involve ？ cells 、 animal 、 Whether the clinic has covered ？
6. Why does the author design the experiment like this ？ What are the innovations ？ How the experimental evidence is derived step by step ？
7. Can you understand all the experimental results ？
8. How the article describes the results 、 How to analyze chart trends , How the arguments are combined , How to express your views ？
9. What are the highlights of writing ？
10. The general idea of the literature ？（ problem 、 Design 、 What is the logical relationship between method and discussion ）

After reading these dry goods summary , How did the students get ？ Zhangqiao scientific research is here to wish all students on the road of academic writing Break open a way through bramble and Thistle , Ride the wind and waves , Full of harvest ！

More knowledge ：
Excuse me? , Which website is better for college students to check literature ？
https://zhuanlan.zhihu.com/p/528577383
How to write the data analysis part of an academic paper ？
https://zhuanlan.zhihu.com/p/530045892
What is the standard format for academic papers ？
https://zhuanlan.zhihu.com/p/530901901