This study aims at investigating 1)the perception of international students' mother tongue and Korean language, 2)whether their perception differs with the degree of Korean proficiency, and 3)whether the degree of exposure to Korean can affect Korean proficiency. Eighty nine international students participated in a questionnaire survey. The overall results on the survey showed that the international students' perception of their mother tongue was strong in general. However, interesting findings were that the participants' level of Korean proficiency was closely related to the perception of mother tongue: the participants who had a low level of Korean proficiency showed a comparatively strong perception of mother tongue. Furthermore, the perception of Korean language was weaker compared to that of their mother tongue. However, the exposure to Korean(e.g. the frequency of using Korean) playing a role in improving Korean proficiency was observed. Therefore, this study suggests that acquiring Korean can be related to the perception of mother tongue and that the international students should raise the frequency of contact with Koreans for their Korean proficiency.

안산시는 피레스로이드계 살충제들과 Bti 그리고 이산화탄소 유인 트랩 등을 활용하여 주로 모기 발생을 관리하고있다. 안산시에서 발생하는 모기 종들은 약 16종으로 얼룩날개모기류 7.2%, 흰줄숲모기 0.4%, 작은빨간집모기 1.2%등 질병매개와 관련된 매개체 발생율은 약 9% 미만이었다. 가장 흔한 모기 종은 빨간집모기(82.4%)이었고 다음으로금빛어깨숲모기(3.9%)였다. 모기 유충 발생지에서 관찰된 식물은 26과 47속 56분류군이었고 동물은 8속 8종이었다.거주지 인근 하천에서 발생하는 성충 모기를 관리하는 수단으로서 검정색과 노란색 점착트랩의 활용성이 높아보였고, 고인 웅덩이나 논 등에서 발생하는 모기 유충은 개구리밥의 활용도 검토할 만 하였다. 또한 잔효력에기반한 살충제 침지한 네트의 효율성 평가로 향후 안산시의 환경적 특성을 고려한 모기 관리 수단으로서 이들방법들의 유기적인 조합을 도출할 예정이다.

Choi, Jin-sook. 2017. “International Students' Attitude Changes towards English as per their Korean skills”. The Sociolinguistics of Korea Journal 25(3). 327~349. This study aims at identifying the international students' attitudes towards English change as per their Korean skills after learning English over one semester. Sixty international students, who consisted of three groups as per their Korean skills, participated in the questionnaire survey at the beginning stage of the class. After one semester, the same questionnaire was given to the participants. Two questionnaire surveys showed similar results: the participants with a higher level of Korean skills demonstrated more favorable attitudes towards English and were less fearful in learning English, compared to those with a lower level of Korean skills. The attitude changes were also different as per the Korean skills: when compared to the attitudes at the beginning, while the participants with a higher level of Korean skills changed more favorably towards learning English, the participants with a lower level of Korean skills showed no attitude changes or picked up less favorable attitudes, and their fear about learning English rather increased. This study implies that English learning may improve English skills for the international students with a higher level of Korean skills but does not affect those with a lower level of Korean skills.

Choi, Jin-sook. 2017. “A Study on Attitudes toward English among Chinese Students”. The Sociolinguistic Journal of Korea 25(1). 239~262. This study sets out to investigate the Chinese students' attitudes toward English and how their attitudes towards English are different as to the level of their Korean skills. For this study, 68 Chinese students participated in the questionnaire survey and 6 students with high level of Korean were interviewed as a group by the researcher. The result of the quantitative study indicates that the participants' attitudes toward English were generally positive. When the level of self-perceived Korean skills was applied to their attitudes towards English as a variable, the participants who had a high level of self-perceived Korean skills produced higher interest in learning English and more favorable attitudes towards English speakers than those who had a low level of self-perceived Korean skills. And the Pearson’s correlation analysis confirmed the relationship between these two factors: self-perceived Korean skills and attitudes toward English. The result of the focus group interview also supported the quantitative study: the participants who had a high level of Korean favored English and they were interested in English. Therefore, this study suggests that English learning could be applied only for the Chinese students who have a high level of Korean skills for the effectiveness of their studying in Korea.