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신동북아 문화교류 기반으로서의 언어교육: 러시아에서의 한국어 교육을 중심으로
송아라,김세일,김형섭 중앙대학교 외국학연구소 2013 외국학연구 Vol.- No.26
This paper examines the historical background and the current situations of teaching Korean in Russia, which has played an important role in spreading Korean culture all over Russia as well as establishing a cultural community in the region of Neo-Northeast Asia, including the Russian Primorskij region. This research traces a series of changes in the situations for teaching Korean as a consequence of various political, military, and cultural issues. This also will provide authentic data on the development of education centers providing Korean in Russia, which have served as a mecca of culture. Korean began to be offered to Soviet-Koreans to keep the Korean tradition and culture for the preservation of their identity. Korean, however, has already become one of the major foreign languages, through which Russians imbibe the Korean culture and make it possible to form a cultural community in the region of Northeast Asia.
송아라 중앙대학교 외국학연구소 2023 외국학연구 Vol.- No.63
The study focused on the topic of ‘nuance’, which was not well dealt with among the studies on learners’ vocabulary education. Even if learners know a lot of vocabulary, it is necessary to study whether they understand the vocabulary well in the context and how to accept it when it is used as a meaning other than a dictionary definition. By dividing this into lexical nuance and pragmatic nuance, I would like to confirm learners' understanding of the sense of the word. Nuance education is still an unfamiliar in Korean vocabulary education, but it is necessary to teach Korean, where context is important in communication. Therefore, through this study, I would like to examine learners’ perception of Korean vocabulary nuance and suggest how word nuance education should be conducted in the future.
의복구성요소에 표현된 비쉬반카 자수의 조형적 특성 연구
송아라,이진희 한국의상디자인학회 2022 한국의상디자인학회지 Vol.24 No.1
Vyshyvanka, the embroidered folk costume shirt of Ukraine, originated during the early reign of the Slavs, and currently, it is also called Ukrainian embroidery. In cases of Vyshyvanka embroidery expressed in apparel elements, it is necessary to research formative characteristics for expanding the visual aspect through the diversification of techniques, but also the aspect of the psychological meaning to Ukrainians. This study aims to consider Vyshyvanka as a unique embroidery technique, and also analyze the formative characteristics expressed in apparel elements. The study of Vyshyvanka embroidery expressed in apparel elements can present meaning to understanding the Ukrainian fashion. The image materials for the analysis of Vyshyvanka design, included work photos contained in literary materials and foreign online visual materials. The results of formatively analyzing the Vyshyvanka embroidery expressed in apparel are as follows. First, the Vyshyvanka embroidery expressed in apparel elements held an incantatory meaning, protecting wearers from getting easily invaded by evil spirits. Second, the Vyshyvanka patterns utilized symbolism that implied the incantatory meaning. Third, a single color was used for the embroidery. Lastly, materials like cotton, that are easy to embroider, were mostly used. The formative characteristics of Vyshyvanka embroidery expressed in apparel elements implied the community spirit, nature worship, and folk beliefs. As an attempt to understand the Ukrainian fashion, this study is significant in the aspect of expanding, widely utilizing, and expanding the range of understanding of Ukrainian fashion. Therefore, there should be more active researches on Ukrainian fashion, so Vyshyvanka can be more widely used as a design element.
7.6 ㎛ 파장 영역의 다중 광 흡수 신호 파장 변조 분광법을 이용한 이산화황 농도 측정
송아란(Aran Song),정낙원(Nakwon Jeong),배성우(Sungwoo Bae),황정호(Jungho Hwang),이창엽(Changyeop Lee),김대해(Daehae Kim) 한국청정기술학회 2020 청정기술 Vol.26 No.4
세계보건기구에 따르면 대기오염은 건강에 대한 주요 위험원으로 대기오염으로 인해 매년 약 700만 명의 조기 사망이 발생하고 있다. 이산화황(SO₂)은 대표적인 대기오염물질로 황 성분이 포함된 연료의 연소에서 다량 발생한다. SO₂ 발생량을 감소시키기 위해서는 대형 연소 환경에서 이를 실시간으로 정밀하게 측정하고 측정 값을 바탕으로 저감 설비를 최적화하는 과정이 필요하다. 이 논문에서는 미세먼지 전구물질인 SO₂의 농도를 측정하기 위해 파장 가변형 다이오드 레이저 흡수 분광법 중 파장 변조 분광법을 이용하였다. 광원으로는 7.6 ㎛ 양자 폭포 레이저를 사용하였고 7623.7 ~ 7626.0 ㎚ 사이의 64개 다중 광흡수선으로 SO₂다. SO₂ 농도는 고농도(1000 ~ 5000 ppm)와 저농도(10 ppm 이하)로 두 종류로 실험 하였다. 추가적으로 가스 셀 외에 레이저가 지나가는 경로에 질소를 채워 대기 중의 H₂O가 SO₂ 측정에 미치는 영향을 확인하였다. SO₂는 3 ppm까지 측정하였고 측정된 SO₂ 농도는 전기 화학식 센서와 NDIR 센서 측정 결과와 비교되었다. According to the World Health Organization (WHO), air pollution is a typical health hazard, resulting in about 7 million premature deaths each year. Sulfur dioxide (SO₂) is one of the major air pollutants, and the combustion process with sulfur-containing fuels generates it. Measuring SO₂ generation in large combustion environments in real time and optimizing reduction facilities based on measured values are necessary to reduce the compound’s presence. This paper describes the concentration measurement for SO₂, a particulate matter precursor, using a wavelength modulation spectroscopy (WMS) of tunable diode laser absorption spectroscopy (TDLAS). This study employed a quantum cascade laser operating at 7.6 ㎛ as a light source. It demonstrated concentration measurement possibility using 64 multi-absorption lines between 7623.7 and 7626.0 ㎚. The experiments were conducted in a multi-pass cell with a total path length of 28 and 76 m at 1 atm, 296 K. The SO₂ concentration was tested in two types: high concentration (1000 to 5000 ppm) and low concentration (10 ppm or less). Additionally, the effect of H₂O interference in the atmosphere on the measurement of SO₂ was confirmed by N₂ purging the laser’s path. The detection limit for SO₂ was 3 ppm, and results were compared with the electronic chemical sensor and nondispersive infrared (NDIR) sensor.
천리안 기상위성을 이용한 한반도 지역의 Linke turbidity 및 청천일사량 추정
송아람(Ahram Song),최강혁(Kanghyeok Choi),정민경(Minkyung Jung),김용일(Yongil Kim) 한국신재생에너지학회 2016 신재생에너지 Vol.12 No.S2
An estimation of the clear sky irradiance is a crucial part of satellite based methods because it is employed to calculate the clear sky index. Although the accuracy of the clear sky irradiance depends on the AOD (Aerosol Optical Depth) and TPW (Total Precipitable Water) mixing ratio, data are difficult to acquire in real time. The Linke turbidity factor simplifies the data as a unique parameter that describes the attenuation of solar radiation in terms of a clean and dry atmosphere. SoDa provides the Linke turbidity maps all over the world, but those maps have low spatial and temporal resolutions. To estimate the clear sky irradiance over the Korean Peninsula using satellite images, this paper presents a method to estimate the Linke turbidity factor using COMS MI, which is operated by the Korea Meteorological Administration, and the clear sky irradiance using the ESRA clear sky model. The AOD and the TPW derived from COMS MI were also used to calculate the Linke turbidity. Overall, the results show that the Linke turbidity factor calculated from COMS MI has higher accuracy than that calculated using the SoDa data.
IEA(Iterative Error Analysis)와 분광혼합분석기법을 이용한 초분광영상의 변화탐지
송아람 ( Ahram Song ),최재완 ( Jaewan Choi ),장안진 ( Anjin Chang ),김용일 ( Yongil Kim ) 대한원격탐사학회 2015 大韓遠隔探査學會誌 Vol.31 No.5
초분광영상을 이용한 변화탐지 기법으로는 Chronochrome(CC), Principal Component Analysis (PCA), 분광혼합분석(spectral unmixing) 등이 있다. 특히, 분광혼합분석을 이용한 변화탐지는 변화객체의 위치 정보뿐만 아니라 변화의 속성까지 분석할 수 있다는 점에서 매우 효과적이나, 분광혼합분석을 활용한 초분광영상의 변화탐지 연구는 여전히 초기단계에 머물러 있다. 본 연구에서는 분광혼합분석을 이용한 효과적인 변화탐지를 위하여 Iterative Error Analysis(IEA)와 Spectral Angle Mapper(SAM) 등을 활용하여두 영상에서 변화지역을 설명할 수 있는 동일한 endmember를 결정하였으며, 점유비율의 차영상을 통하여 변화지역을 추출하였다. 제안기법의 적용성을 평가하기 위하여 임의의 변화지역을 포함한 Compact Airborne Spectrographic Imager(CASI) 및 Hyperion 모의영상에 대한 변화탐지를 수행하였다. 실험결과, 제안기법이 기존의 CC, PCA, N-FINDR를 이용한 분광혼합분석보다 효과적으로 변화지역을 추출할 수 있는 것으로 나타났다. 본 연구의 제안기법은 사전정보 없이 자동으로 동일한 endmember를 추출할 수 있는 장점을 갖기 때문에 다양한 피복물질로 구성된 영상의 변화탐지에 효과적으로 활용될 것이다. Various algorithms such as Chronochrome(CC), Principle Component Analysis(PCA), and spectral unmixing have been studied for hyperspectral change detection. Change detection by spectral unmixing offers useful information on the nature of the change compared to the other change detection methods which provide only the locations of changes in the scene. However, hyperspectral change detection by spectral unmixing is still in an early stage. This research proposed a new approach to extract endmembers, which have identical properties in temporally different images, by Iterative Error Analysis (IEA) and Spectral Angle Mapper(SAM). The change map obtained from the difference of abundance efficiently showed the changed pixels. Simulated images generated from Compact Airborne Spectrographic Imager (CASI) and Hyperion were used for change detection, and the experimental results showed that the proposed method performed better than CC, PCA, and spectral unmixing using N-FINDR. The proposed method has the advantage of automatically extracting endmembers without prior information, and it could be applicable for the real images composed of many materials.