A Comparative Study of Lexical Bundles in Academic Writings between 2001-2010 and 2011-2020

( Xuan Jun Cui ),( Yoon Jung Kim ) 한국멀티미디어언어교육학회 2021 멀티미디어 언어교육 Vol.24 No.4

This study aimed to explore the use of bundles in the field of English education and to trace their development between 2001 and 2020 by compiling two corpora of PhD dissertations that add up to 2,390,093 words. The bundles have changed significantly in length, structure, and function over the past two decades, suggesting that the field of English education changes quickly. Regarding length, the percentage of three-word bundles has increased from 92.2% to 93.4%, whereas that of four-word bundles has decreased from 7.8% to 5.4%. Structurally, patterns such as “noun phrase + of,” “of + noun phrase,” and “in + noun phrase” have decreased in the last decade, while patterns like “noun phrase” have increased. Functionally, the proportion of research-oriented bundles has increased by 4.4%, while the percentages of text-oriented and participant-oriented bundles have dropped by 3.8% and .6%, respectively. At the same time, similarities across corpora have also been observed: three-word bundles make up an overwhelming proportion of the bundles; most of the bundles are noun-based or preposition-based; research-oriented bundles make up the largest percentage, followed by text-oriented bundles, with participant-oriented bundles accounting for a significantly small percentage. This study may have important implications for writers, teachers, students, textbook developers, and researchers in English education.

A Contrastive Corpus-based Study on Chunk Use between Korean and Chinese Writers in Linguistics PhD Dissertations

Xuan Jun Cui,Yoon Jung Kim 팬코리아영어교육학회(구 영남영어교육학회) 2021 영어교육연구 Vol.33 No.4

This study contrasted the use of chunks in linguistic PhD dissertations by Korean and Chinese writers by developing a self-built dissertation corpus consisting of approximately two million words, the findings of which were also compared with that of native English writers in previous study. The results demonstrated that Korean and Chinese writers share many of the frequent chunks, but Chinese writers use more chunks in their dissertations than Korean writers do. Structurally, preposition-based chunks were the most frequently found ones in dissertations by both Korean and Chinese writers, followed by noun-based chunks. Functionally, Chinese writers used different types of chunks more evenly than their Korean counterparts did. Compared to the Korean writers, Chinese writers’ use of chunks was generally more similar to that of native English writers. Notably, the overuse of chunks was more typical of Korean writers, while the underuse of chunks was more common for Chinese writers. This study might have important implications for language teachers, language learners, material developers, and researchers in the field of linguistics.

A Comparative Study of Lexical Bundles between English Education and Linguistics

Xuan Jun Cui,김윤정 현대영미어문학회 2022 현대영미어문학 Vol.40 No.2

This study compared the 50 most frequent four-word bundles between English education and linguistics by developing a dissertation corpus of 2,390,093 words in the field of English education and then comparing it to a corpus of linguistics theses already built in a previous study. The results revealed that the two disciplines share 23 of the 50 most frequent bundles. Structurally, prepositional phrases make up the largest proportion in both disciplines, followed by noun phrases and “others.” Patterns like “noun phrases + of” and “prepositional phrases + of” are the most popular ones across disciplines. While English education demonstrated more diversity in its use of prepositional phrases, linguistics showed more variance in its noun phrases. Functionally, research-oriented bundles took up the biggest percentage, then text-oriented ones, with participant-oriented ones accounting for a small proportion. Compared with English education, however, the distribution of different kinds of bundles in linguistics is more even. The findings have implications for academic writers, teachers, students, material developers, and researchers in the two disciplines.

Ebb & Flow 시스템을 이용한 Doritaenopsis 'Tinny Tender' 양액재배시 생장에 미치는 배양액 농도의 영향

최영일,한은주,박현춘,이용범,백기엽 충북대학교 한국과학재단 지정 첨단원예기술개발 연구센터 2002 연구보고서 Vol.6 No.-

심비디움 배양액을 4개 등급으로 나누어 나누어 Doritaenopsis 'Tinny Tender'를 ebb & flow 양액급수 시스템으로 9개월간 재배한 결과 생체중과 건물중은 고농도 배양액인 2S 처리구에서 가장 많이 감소하였으며, 1/2S, 1S, 3/2S 처리간에는 현저한 차이 없었다. 새로 증가한 엽수는 배양액 농도의 증가에 따라 증가하였으나 새로 증가한 엽면적은 1S처리에서 가장 많이 증가하였다. 식물체내 무기물 농도는 배양액 농도의 증가에 따라 증가하였다. 식물체 고사율도 배양액 농도가 증가할수록 증가하였는데, 3/2S, 2S 처리구에서 각각 5.8, 19.0%에 달하였다. 따라서 ebb & flow 시스템을 이용할 경우 배양액의 pH와 EC가 비교적 안정적이었고 식물체의 건물중 증가가 많이 이루어졌을 뿐만 아니라 고사율 또한 낮았던 1S 배양액이 Doritaenopsis의 생장에 가장 적절한 것으로 판단된다. This study was conducted to investigate the effect of nutrient solution strength on growth characteristics of Doritaenopsis 'Tinny Tender' in an ebb & flow system. Fresh and dry weights of plants grown with a 2S solution of Cymbidium standard solution were lower than those grown with other solution strengths. Fresh and dry weights of the plant were not significantly different among 1/2S, 1S and 3/2S solutions. Number of new leaves, chlorophyⅡ content and mineral content both in leaves and roots increased with increasing nutrient solution strength, while area of expanded new leaves was the greatest with 1S solution. Percentages of plant death increased as the solution strength increased, showing 5.8% in 3/2S and 19.0% in 2s solution, due to salt accumulation in the root zone.

조선족 ‘퉁소’ 연구: 훈춘시 밀강촌에 대한 현정조사를 중심으로

CUI YUHUA,Luo, Xuan 한국아시아학회 2022 아시아연구 Vol.25 No.1

Tungso is one of the inherent wind instruments in China, spreading in Jiandao due to Korean immigrants. It is also a traditional musical instrument of the Korean nationality in China, popular as a national musical instrument in the Korean society. The Korean people's ardor for Tungso transcends personal interest activities. Currently, there are Tungso training classes, and Tungso is promoted in the form of domestic and foreign TV albums. Note that in 2008, it was included in China's national intangible cultural heritage list. Migang Village, the hometown of first-generation inheritor HAN Chengquan of the Korean Tungso, was named by the Chinese government as the hometown of Chinese folk culture and art as well as the hometown of Chinese Korean Tungso. The work, taking Hunchun City where Mijiang Village is located as the object of investigation, systematically explored the origin and form, playing methods and activities, inheritance process, and limitations of Korean Tungso. On-site investigations were utilized to record the development and inheritance process of the Korean Tungso, which has the practical significance of recording the national cultural heritage in China. 본 연구는 조선족 퉁소의 시원을 살펴보고, 조선족 퉁소의 고향인 훈춘시 밀강촌을 조사 대상으로 삼아, 퉁소의 형태, 연주 방법, 연주 활동 및 전승의 과정과 그 한계점을 체계적으로 살펴보려고 한다. 우리 민족의 고유한 관악기 중의 하나인 퉁소는 조선인 이주민에 의하여 간도로 유입되어, 현재 중국에서 조선족 전통악기로 널리 사랑받고 있다. 그리하여 조선족의 퉁소 사랑은 개인적 취미활동을 넘어서서, 퉁소 강습반, 정부 차원의 ‘퉁소 고향’의 명명, 국내외 TV 특집 제작 등을 통해 다양하게 계승되고 있다. 특히 2008년에는 중국 국가 ‘무형문화유산’에 등재되었으며, 조선족 퉁소 1대 전승인(한승권)의 고향인 밀강촌은 중국 정부로부터 ‘중국 민간 문화예술의 고향’, ‘중국 조선족 퉁소의 고향’으로 명명 되었다. 이는 현장조사를 중심으로 한 1차 자료로서, 조선족 퉁소의 제작 및 전승 과정을 기록하는 작업으로서, 우리 민족의 고유한 문화유산을 기록한다는 중요한 의의를 지닌다. 그러나 현재에 이르러 조선족 퉁소 전승에는 심각한 장애에 직면했다. 공연활동이 크게 위축되었고, 전승인이 고령화되었으며, 일반인들의 관심이 멀어져 보존과 전승의 고리가 끊어질 지경에 이르렀다. 이에 대해 민족과 정부의 진지한 관심을 촉구한다.

A Location Method Based on Eight- Neighborhood Chain Code for Palmprint Image

Jing-xuan Jin,Rong-yi Cui 한국어정보학회 2008 한국어정보학 Vol.10 No.2

The crucial issue of precise location for on-line palmprint image was to detect corner of hand-shape contour accurately. The existing corner detection algorithm cannot extract corner useful for location automatically. Through analyzing the regularity of chain-code of hand-shape contour, a rapid and effective corner-detection method was proposed in this paper. Firstly, the method of LOG operator and eight neighborhood boundary –tracking algorithm was made use of to extract the hand-shape contour and its chain-code. Then, according to the regularity of hand-shape contour chain-code around corner, the corner of hand-shape contour was detected accurately. Finally, establish a coordinate system according to the corner detected and locate the palmprint image. The experiment results demonstrate the effectiveness and rapidness of the proposed method.

A Model for Machine Fault Diagnosis based on Mutual Exclusion Theory and Out-of-Distribution Detection

Peng Cui,Xuan Luo,Jing Liu 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.9

The primary task of machine fault diagnosis is to judge whether the current state is normal or damaged, so it is a typical binary classification problem with mutual exclusion. Mutually exclusive events and out-of-domain detection have one thing in common: there are two types of data and no intersection. We proposed a fusion model method to improve the accuracy of machine fault diagnosis, which is based on the mutual exclusivity of events and the commonality of out-of-distribution detection, and finally generalized to all binary classification problems. It is reported that the performance of a convolutional neural network (CNN) will decrease as the recognition type increases, so the variational auto-encoder (VAE) is used as the primary model. Two VAE models are used to train the machine's normal and fault sound data. Two reconstruction probabilities will be obtained during the test. The smaller value is transformed into a correction value of another value according to the mutually exclusive characteristics. Finally, the classification result is obtained according to the fusion algorithm. Filtering normal data features from fault data features is proposed, which shields the interference and makes the fault features more prominent. We confirm that good performance improvements have been achieved in the machine fault detection data set, and the results are better than most mainstream models.

Mechanical evaluation of polymer microneedles for transdermal drug delivery: In vitro and in vivo

Rui Xuan Liu,Yu Ting He,Ling Liang,Liu Fu Hu,Yue Liu,Rui-xing Yu,Bo Zhi Chen,Yong Cui,Xin Dong Guo 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.114 No.-

In this study, we reported two types of PMNs based on polylactic acid (PLA) and polyvinyl alcohol (PVA),respectively. Parafilm M film, porcine skin, and rats’ models were operated to evaluate the mechanicalproperties in vitro and in vivo to find optimal parameters for efficient insertion. Insertion depth was measuredusing Digital Force Gauge by changing insertion force and speed, respectively. Results showed thatincreasing the insertion force and speed used for PMNs application led to a significant increase in thedepth of insertion. A force of 18 N under a speed of 330 mm/min was the optimal condition for insertingPMNs array into ParafilmM film and porcine skin. In addition, PLA-MNs exhibited higher robustness andenhanced homogeneity in insertion depth compared with PVA-MNs, but PVA-MNs were able to reachmuch deeper insertion depth. Moreover, Sprague Dawley (SD) rat experiments confirmed the effectivenessof optimal insertion parameters for transdermal drug delivery. This study illustrated not only thedevelopment of novel PMNs but also the mechanical evaluation for the design of PMNs.

Engineering Homochiral Metal-Organic Frameworks for Heterogeneous Asymmetric Catalysis and Enantioselective Separation

Liu, Yan,Xuan, Weimin,Cui, Yong WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.37

<P>Owing to the potential applications in technological areas such as gas storage, catalysis, separation, sensing and nonlinear optics, tremendous efforts have been devoted to the development of porous metal-organic frameworks (MOFs) over the past ten years. Homochiral porous MOFs are particularly attractive candidates as heterogeneous asymmetric catalysts and enantioselective adsorbents and separators for production of optically active organic compounds due to the lack of homochiral inorganic porous materials such as zeolites. In this review, we summarize the recent research progress in homochiral MOF materials, including their synthetic strategy, distinctive structural features and latest advances in asymmetric heterogeneous catalysis and enantioselective separation.</P> <B>Graphic Abstract</B> <P>Homochiral porous metal-organic frameworks (MOFs) are particularly attractive candidates as heterogeneous asymmetric catalysts and enantioselective adsorbents and separators for production of optically active organic compounds. This review summarizes the recent research progress in homochiral MOF materials, including their synthetic strategy, distinctive structural features and applications in enantioselective catalysis and separation. <img src='wiley_img_2010/09359648-2010-22-37-ADMA201000197-content.gif' alt='wiley_img_2010/09359648-2010-22-37-ADMA201000197-content'> </P>

Synergistic effect in low temperature co-pyrolysis of sugarcane bagasse and lignite

Shuang Yi,Xuan-ming He,Hong-tao Lin,Hui Zheng,Cui-hua Li,Chong Li 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.10

Sugarcane bagasse was co-pyrolyzed with lignite in a fixed bed reactor to investigate the possible interaction during co-pyrolysis. GC-MS revealed that the concentration of phenols and aliphatic compounds in the tar increased with the addition of sugarcane bagasse, while the content of aromatic compounds had the contradictory tendency. The phenol content in co-pyrolyzed tar reached 20.35%, which increased by 142.26% compared with the calculated values. The sugarcane bagasse decomposition peak partly overlapped with lignite pyrolysis peak from TG-DTG curves, which meant more interaction between lignite and sugarcane bagasse during the pyrolysis process. The difference between the experimental and calculated values of pyrolysis products yield, tar components, DTG values and kinetics analysis indicated the synergetic effect between lignite and sugarcane bagasse.