چکیده:
There has been increasing interest in utilizing corpora in linguistic research and pedagogy in recent years. Rhetorical organization of different sections of research articles may appear similar in various disciplines, but close examination may show subtle differences nonetheless. One of the features that has been at the center of attention especially in recent years is the idiomaticity of a discourse which can be examined from the perspective of multi-word units captured by the automatic retrieval of lexical bundles. This study takes a corpus-based approach for the identification of lexical bundles. A corpus of 801,894 words from 790 articles was collected. In order to fulfill the purposes of the present study, ABBYY FineReader 10 professional edition, Total Assistant, Antconc 3.2.3, and WordSmith Tools 5 were used to identify lexical bundles. Then these bundles were classified structurally and functionally based on the presented taxonomies in the literature. The results of the current study indicated that the writers of medical research articles mostly rely on text-oriented bundles in the discussion section of research articles to establish academic discourse.
خلاصه ماشینی:
A Corpus-Based Study of Lexical Bundles Discussion Section of Medical Research Articles Zahra Sadat Jalali (Corresponding author), Ph. D Candidate, Alzahra University, Iran z.
These terms are recurrent word combinations (Altenberg, 1998; De Cock, 1998), phrasicon (De Cock, Granger, Leech, & McEnery, 1998), clusters (Hyland, 2008a; Schmitt, Grandage & Adolphs, 2004), n-grams (Stubbs, 2007a, 2007b) and lexical bundles (Biber & Barbieri, 2007; Cortes, 2002).
In another study, Łukasz Grabowski (2015) investigated lexical bundles across samples of patient information leaflets, summaries of product characteristics, clinical trial protocols and chapters from academic textbooks on pharmacology and found salient links between situational, linguistic and functional features of the four pharmaceutical registers under scrutiny and showed that patterns of language use differ considerably due to topic- and function-related differences between the text types, despite their dealing with a similar theme, namely with medicines or medicinal products.
For instance, Cortes (2013) studied lexical bundles in the introduction section of research articles in different disciplines, and the most frequent structural correlates and functions were found.
Related literature and studies which were carried out on the discussion sections of RAs in different disciplines showed that few studies have focused on the lexical bundles in the discussion section of RAs. Since EAP research has indicated that phraseology or formulaic expressions in academic written discourse are often problematic for non-native or novice writers (Cowie, 1998; Gledhill, 2000; Jalali, 2014; Güngör & Uysal, 2016; Safarzadeh, Monfared & Sarfeju, 2013; Pan, Reppen & Biber, 2016; Bychkovska & Lee, 2017; Shin, Cortes & Yoo, 2018 ), the current study presents such lexical phrases that can be linked to communicative purposes of a section through the analysis of lexical bundles in the discussion section of medical research articles.