Global Journal of Human Social Science, G: Linguistics and Education, Volume 23 Issue 3

from 2018 to 2023. All these two journals are recommended by aerospace researchers and experts, these two journals belong to authoritative foreign aerospace journals with long-standing impact factors, and have a high volume of publications, thus ensuring the English proficiency and professionalism of the authors. More importantly, the above two journals cover most of the research directions of aerospace and aeronautics, including astronautic engineering, aircraft design, aerodynamics, space structure, etc. Importantly, it is worth noticing that the definition of native English speakers in this research has two ways to identify, the first author was from an inner-circle country whose native language was English, such as America, UK, Canada, Australia, etc, and the first author’s name-writing system was also used as a reference for identification. (Medgyes P, 2001). c) Corpus Annotation Corpus annotation is the most crucial process in this research, the reliability of move identification can be achieved by inviting different coders to conduct corpus annotation together. To ensure that the coder has expertise in the focused discipline, two aerospace major Ph.D. candidates served as assistants for annotation. Another coder who majors in linguistics will join in move identification. The author conducted a 3-hour training and discussion session for the participants so as to assure that the coder clearly understood how to code a sample text using the coding scheme (Kanoksilapatham, 2005). Moreover, we asked for cooperation from aerospace experts in identifying some professional knowledge that is difficult to understand. After the annotation was completed, by using SPSS.20, the kappa coefficients of the annotation result were checked for consistency and subsequently discussed and adjusted the move identification until a high degree of agreement was reached, then a model for aerospace discipline of the conclusion section of RA is produced. d) Instruments Totally three tools are employed in the process of move identification and data analysis. BFSU Standford Pos Tagger 1.1 and Microsoft Word are used to input the texts and code; SPSS2.0 is used to do the data analysis; Antmover1.0 is assisted to identify the move and the function of the sentence unit. IV. R esult and D iscussion After the annotation of 50 pieces of writing, a modified model based on Yang&Allison (2003) and Zhiqing Hu (2007) is put forwards for aerospace RA conclusion. We extracted three major Moves based on the analysis of the corpus, including Move 1: summary of the study; Move 2: evaluation of the study, and Move 3: suggestion for future research. Also, five Steps are specifically shown within the three moves. There is a total of 108 Moves and 152 Steps in these 50 writing pieces. According to Kanoksilapatham (2005), Moves having 100% occurrences are identified as obligatory. To be recognized as a conventional move, a move must occur in 60% of the appropriate sections in the corpus. If the frequency of a move falls below 60%, it is considered optional (Kanoksilapatham, 2005). Based on the above criteria, this section presents both the statistical analysis and the explanation of each Move and Step in the studied corpus. a) The Distribution of Moves and Steps Table 1: The Frequency of Moves and Steps in Aerospace Conclusion Section Move and Step Number Frequency Move 1 Summary of Study 50 100% Step 1 Summary of Background 20 40% Step 2 Summary of Purpose 44 88% Move 2 Evaluation of Study 41 82% Step 1 Evaluation of Method 30 60% Step 2 Evaluation of Result 36 72% Step 3 Evaluation of Contribution/Limitation 22 44% Move 3 Suggestion for Future Research 18 36% b) Move 1: Summary of Study From table one, there are 50 Move 1 that appears in the aerospace conclusion section, which is the most frequent Moves, proving Move 1 is obligatory Move in the aerospace conclusion section, this result is in line with Yang & Allison’s (2003) study in the Linguistics corpus. The main function of Move 1 is to make a summary of the claim of the study. This move includes two Steps, the first Step is the summary of the background, aiming to provide background information about the theory and some key definition of concepts, in this Step the author usually use one or two sentences to provide a precise background and indicate a research Volume XXIII Issue III Version I 18 ( ) Global Journal of Human Social Science - Year 2023 G © 2023 Global Journals Move Analysis of Conclusion Section of Aerospace Research Article