1. Postgraduate topic selection 580202 paper testing

Students who do graduation thesis must have a strong interest in the research topic, so as to actively study the topic and produce innovative results. At present, many universities in China adopt two-way selection to determine the topics of graduates. Students can choose their own topics of interest, and then guide teachers to implement the topics to students according to their own basic situation. The advantage of this is that it can arouse students' enthusiasm, and teaching and learning can interact better. The disadvantage is that good students and teachers flock to each other, and it is difficult for students with poor grades to find tutors. However, some universities in Japan adopt a one-way choice, that is, only students choose their tutors and the tutors accept them unconditionally.

Our choice is somewhere in between. Considering the characteristics of the graduation thesis of these two majors, they all do experiments in the laboratory, which occupies more laboratory area and has limited conditions. At the same time, considering that a teacher uses limited energy to guide too many students, it affects the quality of guidance to students. Therefore, each teacher is limited to guiding no more than 2 students' graduation thesis, and in some cases, teachers with large topics can guide 3 students. Instructors are required to submit topics according to this requirement, and the department will organize an expert group to conduct preliminary screening and evaluation. Then publish the topic, students choose, one for each person. If individual topics are repeated, discuss with students and make appropriate adjustments. The actual result is that, basically, students choose topics and teachers, and teachers choose fewer students. It also avoids the competition between good students and teachers, and it is difficult for students with poor grades to find tutors.

2. Time of topic selection

According to the teaching plan, students' graduation thesis is arranged in the eighth semester. According to past experience, students of these two majors finish their graduation thesis in the laboratory, which requires a lot of workload and time. However, due to various objective reasons, the effective time of students in the laboratory is generally less than 4 months. Therefore, to ensure the quality of students' graduation thesis, there must be some time to ensure it. Choosing topics in advance can improve students' effective time in the laboratory.

We will arrange topics one month before the end of the seventh semester. First, the tutor submits the topic of graduation thesis, and after examination, the topic is implemented to each student, and the student tutor is organized to meet. The teacher introduces the relevant situation and research content of the subject, negotiates with the students, and the teacher submits the task book of graduation thesis. One month before the end of the semester, the course teaching of graduating students has basically ended. During this period, students can do literature research and write literature review according to the research content and the requirements of graduation thesis assignment, or enter the laboratory for some basic skills training to prepare for the formal graduation thesis work next semester. When you enter the laboratory next semester, you can quickly enter the experimental state, which improves the effective experimental time.

3. The principle of topic selection

Generally, you can't expect too much from undergraduate thesis. The focus of undergraduate graduation thesis is to cultivate students' serious scientific attitude, rigorous scientific style and rigorous scientific thinking, guide students to practice with their brains, strengthen the training of basic experimental skills, cultivate students' basic scientific research quality and comprehensive quality, and pay due attention to the cultivation of innovative ability. The requirements for selecting a topic are: scientific research projects should be combined with production practice, the research topic should have certain theoretical significance or application value, and the difficulty and workload of the topic should be moderate, so as to avoid that the topic is too large to be completed on schedule and the topic is too simple and the workload is not full. The result of the topic selection is that all scientific research and production practice are combined, and there are no empty questions. Many projects are part of National Natural Science Foundation, 863 Project and 973 Project. Some research topics are hot or cutting-edge. China HowNet Wanfang Weipu periodical paper detection system is a free duplicate checking software for graduation thesis.

The second is the management and monitoring of graduation thesis process.

In the process of graduation thesis research, teachers are required to strengthen the guidance, supervision and management of students' graduation thesis. Because the graduation thesis of chemical engineering major is studied in the laboratory, and the number of students instructed by each instructor is limited to three, students have more opportunities to communicate and meet with teachers, which is convenient for daily supervision and management. In addition, every year, we send some students to the Institute of Chemistry of the Chinese Academy of Sciences and other foreign units to do graduation thesis. For these students, first of all, we should fully communicate with the instructors of other units and put forward the requirements of the school for graduation thesis work. At the same time, each student is assigned an on-campus teacher as one of the instructors, who is responsible for the management of students' graduation thesis. In addition to keeping in touch with the tutors outside the school, teachers in the school should regularly check the research progress submitted by students online according to the regulations of the school (students submit reports every two weeks), answer the questions raised by students and give suggestions for the next step.

The mid-term examination of graduation thesis is an important link in process control. According to the requirements of the school, the mid-term examination for graduation thesis has been institutionalized. The specific way is that the tutor reports the progress and existing problems of the students' graduation thesis. In the mid-term inspection, some problems are usually found and need to be solved in time. For example, due to objective reasons, the project is not progressing smoothly and cannot be completed as planned. At this time, it is necessary to negotiate with the tutor, or narrow the scope of the research project or change the subject according to the specific situation. Since it is scientific research, failure is allowed, but it is impossible to write a graduation thesis without experimental results, so it should be adjusted in time. Some students can't guarantee the time to enter the laboratory. Some of them are busy with exams because they make up more lessons, and some are busy looking for jobs and attending various job fairs and interviews, which takes up the time of graduation thesis and interferes with the normal progress of graduation thesis. However, it is reasonable for students to find jobs through examinations, and it cannot be restricted by simple regulations. For these students, we need to do serious ideological work, at the same time care about the problems they face, encourage them and give them as much help as possible. At the same time, we should arrange the time reasonably to ensure the smooth completion of the graduation thesis.

Third, write a graduation thesis.

Judging from previous years, there are many problems in students' graduation thesis writing. In recent years, we have strengthened the guidance and standardized requirements for students to write graduation thesis, and taken some measures to improve the writing quality of graduation thesis.

When the laboratory research work enters the final stage, a special lecture on how to write a graduation thesis is organized every year, and experienced teachers are invited to explain the format and structure of graduation thesis writing, the use of symbols in the international system of units, the citation of references, the collation of experimental data, the normative requirements of charts and their relationship with the context, and the analysis of common mistakes and problems in graduation thesis writing. Through this special lecture, students can master the basic points and requirements of writing graduation thesis.

Another measure is to implement a three-level control system for the quality of graduation thesis. First of all, the tutor is required to strengthen the guidance for students to write graduation thesis, carefully read the first draft of the graduation thesis, put forward suggestions for revision or directly revise the thesis, and be responsible for the quality of the thesis. The evaluation of teachers is a second-level inspection, focusing on checking whether the writing is standardized, whether there are any major mistakes, and proposing amendments. The defense committee implements three-level checks, and the members of the defense committee are responsible for comprehensively and strictly reviewing all graduation papers, and the papers in question require revision again. Checking the writing quality of graduation thesis is an important link to ensure the quality of graduation thesis. Almost all papers have some problems, and the repair rate of papers sent to the defense Committee is almost 100%. Therefore, we ask students not to bind their graduation thesis, but to pass the examination of system 1 before binding it.

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Fourth, the defense and performance evaluation

In order to grade students' graduation thesis fairly and objectively, pharmaceutical engineering and chemical engineering and technology majors respectively form professional defense committees, which are responsible for the defense of students' graduation thesis, regardless of whether the graduation thesis work is carried out on campus or off campus. Participants in the defense include all members of the defense Committee, instructors and reviewers. Before the defense, the defense schedule is made in advance according to the order of students' student numbers, and students participate in the defense according to the schedule. Students' report is limited to 15 minutes, and questions are limited to 5 minutes. Before the defense, students are required to do a good job in PPT, and clearly explain the research situation of their graduation thesis within 15 minutes. Students must prepare carefully, extract the main contents and research results, and practice repeatedly in order to have a good performance in the report. After each student's defense, the members of the defense committee will grade the students' graduation thesis according to the percentage system, and the grading results will not be announced on the spot. After all the students have finished their defense, they will vote in a unified summary. First of all, the scores of summary evaluation are queued, and the scores are determined according to the proportion of excellent 20%, good 50% and below 30% and the five-level scoring system.