최근 농지 및 수자원의 염류화로 인해 염생식물에 대한 작물화와 생육 조건 구명을 위한 연구 필요성이 높아지고 있다. 그러나 재배 조건 변화에 따른 작물의 생육 및 기능성 성분 변화 분석을 위해서는 양액 및 작물 생육부 시료를 채취하여 이를 전처리 및 분석해야 하여 시간적, 인적 자원의 소모가 높다. 본 연구에서는 염생식물의 최적 생육 조건 구명을 효율적으로 수행하기 위해 비파괴적으로 재배 현장에서 실시간으로 작물 생육부와 수경재배 근권부의 염분 농도를 모니터링할 수 있는 시스템을 개발하였다. 개발 시스템을 통해 NaCl 0 mM, 50 mM, 150 mM, 300 mM의 4가지 농도 조건에서 갯방풍을 대상으로 재배실험을 수행한 결과, 재배 중 염분 농도 수치의 변화 및 염분 농도가 높을수록 생체중이 감소하는 것을 확인하였다. 실제 생육 분석 결과에 따르면 개발 시스템을 통한 모니터링 결과에 상응하는 생체중 결과를 확인하여 염생식물의 생육 모니터링 적용이 가능할 것으로 평가되었다. 그러나 단위 생체중 당 기능성물질 함량의 경우, NaCl 농도가 증가할수록 증가하는 것으로 나타나 갯방풍의 상업적 재배 조건의 구명을 위해서는 생체중 외에 기능성 성분의 모니터링을 위한 시스템 보완이 필요하다고 판단되었다.

In this study, Korean Hallabong produced in Jeju Island and coffee were grafted to prepare coffee containing Hallabong extract and the nutritional components were analyzed. As the amount of Hallabong extract increased, the water content and total polyphenol content increased. However, the crude flour, crude protein, and total flavonoid content decreased significantly. The selenium content per 100 g was 91.28 mg in the 1% Hallabong group, and the iron content was 6.84 mg in the 3% Hallabong group. As the content of Hallabong extract in coffee increased, the L-value (brightness) and b-value (yellowness) increased, but the a-value (redness) showed a tendency to decrease. In the case of DPPH(2,2-Diphenyl-1-picrylhydrazyl) radical scavenging activity, the group containing 9% of Hallabong extract showed the highest value at 47.20 μmol/g of TEAC. In particular, the ABTS(2,2’-Azino-bis(3-ethylbenzothiazoline- 6-sulfonate)) and DPPH radical scavenging activity were significantly increased from coffee powder containing 6% or more of Hallabong extract(p<0.05). The caffeine content decreased as the amount of Hallabong extract added to coffee increased. Therefore, when making powder coffee with Hallabong extract added, it is recommended to set the content of Hallabong extract to 6%.

This paper analyzes the research progress of language attitudes in the field of sociolinguistics and proposes future research projects. First, the research progress of language attitudes can be categorized into four groups; attitudes to the language itself, attitudes to language variation, attitudes to language use, and attitudes to language identity. Research about attitudes to the language itself is peculiar in that big scale surveys were conducted by the government for linguistic policies. Quantitative survey method is preferable when providing the results in figures. However, it is unsuitable when analyzing the results in depth. Therefore, qualitative research entailed with various research methods is necessary. Research on attitudes toward language variation should be promoted considering the fast speed of linguistic change of the Korean language. So far most studies were about umlaut, euphony, grammatical change in stem and ending. Nevertheless, further studies should expand the research horizon to different linguistic units such as intonation, discourse markers, etc. Research on attitudes toward language use shows the possibility of extending the scope of the field of sociolinguistics. Especially study on anthroponym, commercials, brand names, copies, political slogans should not only be done on language attitudes but also on sociolinguistic respects. Lastly, research on language attitudes of minority groups focused on Korean migrants to Japan(Korean residents in Japan), former Soviet Union(Russian Koreans), and China(Korean-Chinese). However, at present Korea is a multicultural society which implicates that future studies should pay more attention on minority groups of different mother tongues for example immigrant workers, international students, temporary visitors, overseas Chinese, and foreigners who acquired Korean nationality, as well as North Korean defectors and migrant wives.

Ahn, Ye-rim & Yang, Myung-hee. 2018. “Study on the Expanded Use of the Personal Honorific ‘bun(분)’” The Sociolinguistic Journal of Korea 26(1), 229~250. The aim of this study is to identify the new usages and functions of the personal honorific ‘bun’ in internet communication languages (ICL). To do this, we retrieved all the comments containing the word ‘bun’ that were posted on Twitter throughout the year 2017. The findings of this study are as follows. First, in ICL, ‘bun’ is used not only to represent its original meaning and function; it is also combined with a new form of address that does not carry any personal or honorific connotations. Second, Twitter users use ‘bun’ to refer to any person they are addressing, regardless of social status. Third, ‘bun’ is used in connection with the “fun-seeking”function of ICL. Finally, it is evident that the use of ‘bun’ in ICL has begun to influence everyday language. Wide-ranging studies on changing everyday use of ‘bun’ are needed.

Yang, Myung-hee & Kim, Bo-hyeon. 2017. “A Study on Korean Language Anxiety in the Classrooms of Advanced-level Korean Language Learners for Academic purposes: With Chinese Students in Graduate School in Korea”. The Sociolinguistic Journal of Korea 25(1). 119~141. The aim of this study is to examine the level of and the factors for Korean language anxiety in the classrooms of advanced-level Korean language learners for academic purposes. To this end, 60 Chinese students attending graduate school participated in the survey with the questionnaires: i.e., PRCA and FLCAS. The results suggest as follows. First, the Korean language anxiety level in the classrooms of the Chinese students is likely to be high. Also, it is not because of the participants’ traits, but because of the classroom environment. Second, there are 5 factors for Korean language anxiety in the classrooms; communication anxiety with native speakers, communication anxiety, fears of negative evaluation and failing in class, Korean proficiency anxiety, and negative attitudes toward class. Especially, the forth factor suggests that Korean learners needs an educational intervention of Korean, even after they enter undergraduate or graduate institutions. Third, there is a negative correlation between Korean language anxiety in the classroom and a residence period in Korea. That is, it is necessary to give them as many opportunities as possible for being exposed to Korean by a Korean educational intervention.

Yang, Myunghee, Yoo, Yang & Moon, Grace Ge-Soon. 2014. A Study of the Complaint Speech Act by Chinese Office Workers in Korea: With Focus on High-Level Strategies. The Sociolinguistic Journal of Korea 22(3). The present study examines the use of the speech act of complaint in Korean by Chinese office workers in Korea, with particular focus on their use of high-level strategies. By looking at the differences in speech act between Korean-speaking Chinese office workers and native Korean office workers from a cross-cultural pragmatics perspective, the study aims to shed light on intercultural differences and explore their implications for Korean language education. High-level strategies in the speech act of complaint are broadly classified into direct, indirect, mixed, and silent strategies. By means of a discourse completion test (DCT), 50 Chinese office workers and 50 Korean office workers were surveyed with respect to their use of the complaint speech act. The results indicated that Chinese office workers tend to use more indirect strategies than their Korean counterparts and that Korean office workers use the silent strategy more often than Chinese workers. Significant results were also obtained by comparing the use of high-level strategies by the two subject groups according to variables such as social status, familiarity, age, gender, and employment period.

Yang Myung-hee, Kang Huisuk and Park Dong-geun. 2013. A Sociolinguistic Study on the name of Korean and Koreans' language attitudes toward the name: Focused on teenage high school students and their parents. The Sociolinguistic Journal of Korea 21(3). This paper aims to compare the characteristics of name and language attitudes towards name of teenage high school students and their parents. This thesis carried out a nationwide survey and as a result drew out several important conclusions. First, the percentage of Sino-Korean name was the highest; the rate of the native name of teenage high school students is two times higher than that of their parents, and more male students had Sino-Korean name than female students. Second, the percentage of parents taking part in the naming process was 60% in parents generation, whereas the percentage of parents and grandparents respectively taking part in the naming process were similar in teenage high school students. This result indicates that grandparents became to play a bigger role in the naming process due to their socio-economic status. Third, the percentage of using the generation character(hangryeol) decreased in teenage high school students, indicating that people are not bound to traditions. Fourth, the rate of female parent who were unsatisfied with their names was the highest. It suggests that there was a social preference of a son to a daughter. Fifth, the parents replied that the most desirable namer is father, followed by naming specialist, and students replied father followed by grandparents. Sixth, the number of students who answered that fetus names are necessary was two times bigger than their parents, and it seems likely that fetus names will be popular in the future as well. Hereafter, by carrying out nationwide surveys of different age groups(their late teens and 40's or 50's), this paper intends to study how the characteristics of Korean name and Koreans' language attitudes towards it changed through different age groups. (279 word)

본 연구는 스페이스 트러스 구조물의 초기 형상을 결정하기 위해 밀도법을 이용한 위상최적화 기술을 고려하고자 한다. 대부분의 초기 형상설계는 다양한 최적화 방법을 활용하지 않고 설계자의 경험이나 시행착오적인 방법을 바탕으로 수행되고 있다. 이런 이유로 합리적이고 경제적인 최적화기술이 초기 형상설계에 도입되어야 한다. 따라서 본 연구에서는 스페이스 트러스 구조물을 대상으로 설계영역을 설정하고 위상최적화를 수행하여 최적의 재료분포를 찾은 뒤 크기최적화를 이용하여 최적부재 크기를 찾고자 한다. 이와 같이 밀도법을 이용한 위상 및 크기최적화를 병행하여 수행할 경우 합리적인 스페이스 트러스 구조물의 초기 형상을 도출할 수 있다.

This study aims to see the change of language attitude in Korea by comparing research done in 1988 and research done in 2005. The research in 1988 and the research in 2005 have in common four domains of language attitude questions. The four themes are the standard language and dialect, honorific, loan words, the use of Chinese letters and the Roman alphabet. Koreans have changed their attitude toward standard language and dialect. They acknowledge the need of a standard language and many people(84.6%) agreed that people on television programs have to use a standard language. Koreans still have a positive attitude toward the use of the honorific. Analyzing the attitude of the honorific revealed that the status of husbands and wives have changed for the better(the status of wife is up). In business the age of speakers has more influence on the use of honorific more than the status of the speakers. Koreans have also changed their attitude towards the loan words. They had a negative attitude about the loan words but this attitude has changed. The attitude towards the use of Chinese letters and the Roman alphabet have changed as well. Koreans have a more positive attitude toward the Roman alphabet and the need of learning Chinese letters has increased. On the basis of these results, we will predict the change in language and implement a language policy.