1. The title of the paper changes due to the change of actual content in actual work practice.

2. Due to the need of research, the topic should be defined more strictly.

3. After a period of preparation, I feel that the topic of the original paper is too big, too wide and too wide to make a comprehensive and in-depth study. In order to do a good job in graduation design (thesis) and successfully complete the thesis, I need to change the topic and conduct in-depth research on one of the problems after consultation with my tutor. Graduationstudy is a paper that students are required to write before graduation, so as to concentrate on the scientific research and training of students in this major. Generally arranged in the last academic year (semester). Under the guidance of teachers, students must choose topics for research, write and submit papers. The purpose is to cultivate students' scientific research ability; Strengthen the training of comprehensively applying the learned knowledge, theory and skills to solve practical problems; Generally speaking, it examines the academic level achieved by students in universities. The topic of the thesis is designated by the teacher or put forward by the students, and determined with the consent of the teacher. They are all theoretical and practical problems raised in the development or practice of this major. Through this link, students should take related scientific research topics as the theme, consult and comment on the literature. Make research plans, design and conduct scientific experiments or social surveys, process data or sort out survey results, analyze and demonstrate results, draw conclusions and write papers.