• 대한음성학회:학술대회논문집
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• 대한음성학회 1996년도 10월 학술대회지
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• pp.109-116
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• 1996

In this paper, I would like to explore the possibility that the nature of place assimilation can be captured in terms of the OCP within the Optimality Theory (Mccarthy & Prince 1999. 1995; Prince & Smolensky 1993). In derivational models, each assimilatory process would be expressed through a different autosegmental rule. However, what any such model misses is a clear generalization that all of those processes have the effect of avoiding a configuration in which two consonantal place nodes are adjacent across a syllable boundary, as illustrated in (1):(equation omitted) In a derivational model, it is a coincidence that across languages there are changes that have the result of modifying a structure of the form (1a) into the other structure that does not have adjacent consonantal place nodes (1b). OT allows us to express this effect through a constraint given in (2) that forbids adjacent place nodes: (2) OCP(PL): Adjacent place nodes are prohibited. At this point, then, a question arises as to how consonantal and vocalic place nodes are formally distinguished in the output for the purpose of applying the OCP(PL). Besides, the OCP(PL) would affect equally complex onsets and codas as well as coda-onset clusters in languages that have them such as English. To remedy this problem, following Mccarthy (1994), I assume that the canonical markedness constraint is a prohibition defined over no more than two segments, $\alpha$ and $\beta$: that is, $^{*}\{{\alpha, {\;}{\beta{\}$ with appropriate conditions imposed on $\alpha$ and $\beta$. I propose the OCP(PL) again in the following format (3) OCP(PL) (table omitted) $\alpha$ and $\beta$ are the target and the trigger of place assimilation, respectively. The '*' is a reminder that, in this format, constraints specify negative targets or prohibited configurations. Any structure matching the specifications is in violation of this constraint. Now, in correspondence terms, the meaning of the OCP(PL) is this: the constraint is violated if a consonantal place $\alpha$ is immediately followed by a consonantal place $\bebt$ in surface. One advantage of this format is that the OCP(PL) would also be invoked in dealing with place assimilation within complex coda (e.g., sink [si(equation omitted)k]): we can make the constraint scan the consonantal clusters only, excluding any intervening vowels. Finally, the onset clusters typically do not undergo place assimilation. I propose that the onsets be protected by certain constraint which ensures that the coda, not the onset loses the place feature.

• 한국항공운항학회지
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• 제25권4호
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• pp.124-129
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• 2017

Clouds are an important factor in aircraft flight. In particular, a significant impact on small aircraft flying at low altitude. Therefore, we have verified and characterized the low level cloud prediction data of the Unified Model(UM) - based Local Data Assimilation and Prediction System(LDAPS) operated by KMA in order to develop cloud forecasting service and contents important for safety of low-altitude aircraft flight. As a result of the low level cloud test for seven airports in Korea, a high correlation coefficient of 0.4 ~ 0.7 was obtained for 0-36 leading time. Also, we found that the prediction performance does not decrease as the lead time increases. Based on the results of this study, it is expected that model-based forecasting data for low-altitude aviation meteorology services can be produced.

• 말소리와 음성과학
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• 제3권1호
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• pp.77-83
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• 2011

The present study reports the results of an acoustic study of nasal assimilation at word boundaries in Chinese-Korean interlanguage. Twelve Chinese learners of Korean and four Korean native speakers recorded obstruent#nasal sequences in noun compounds and verb phrases, and their different production patterns were examined in detail. While nasalization of the word-final obstruents occurred only in 11.7% of the obstruent#nasal sequences for the Chinese learners, the Korean native speakers showed complete nasalization of those sequences. However, there was small, but consistent effect of learning on the production of external sandhi in L2, because there were shown to be differences in the rate of nasalization between the two proficiency groups of Chinese participants. On average, the intermediate level learners nasalized the target stops at the rate of 16%, and the beginning level learners showed the 7% nasalization rate. In addition, it was found that the context difference such as noun compounds versus verb phrases does not influence the nasalization pattern across word boundaries.

• Journal of Dairy Science and Biotechnology
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• 제17권1호
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• pp.58-71
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• 1999

This study was designed to investigate the health promotion effect of fermented milk and historical story of Korean dairy products from the ancient period to present. Although the origin of fermented milk is Europe, the recede of fermented milk was founded in far-east and middle east areas at BC 4C. After the spread of fermented milk to Korea and Japan. The consumption of fermented milk in Korea was dramatically increased to 14.2 kg per person in 1997. Health promotion effect of fermented milk can be devided to 5 major effected improvements of intestinal microflora, anticancer, cholesterol assimilation anti-pathogenic activity. Fermented milk reduced the level of ${\beta}$-glucornidase and nitroreductase to 50% and it provides anticancer activity by cell wall an polysaccharides. Fermented milk has cholesterol assimilation activity ca. 54${\sim}$40% (B. longum, Str. thermophillus). Anti-pathogenic activity of fermented milk was significant. It appeared that Sal. ser. typhimurium was more susceptible than 5. coli 0157 at low pH fermented milk. Viable cells of E. coli 0157 were not dramatically decreased in most of fermented milks tested, but in general, Sal. ser. typhimurium was drastically decreased in most of the fermented milks.

• 대기
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• 제23권2호
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• pp.171-186
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• 2013

Recently, the number of observations used in a data assimilation system is increasing due to the enormous amount of observations, including satellite data. However, it is not clear that all of these observations are always beneficial to the performance of the numerical weather prediction (NWP). Therefore, it is important to evaluate the effect of observations on these forecasts so that the observations can be used more usefully in NWP process. In this study, the adjoint-based Forecast Sensitivity to Observation (FSO) method with the KMA Unified Model (UM) is applied to two high-impact weather events which occurred in summer and winter in Korea in an effort to investigate the effects of observations on the forecasts of these events. The total dry energy norm is used as a response function to calculate the adjoint sensitivity. For the summer case, TEMP observations have the greatest total impact while BOGUS shows the greatest impact per observation for all of the 24-, 36-, and 48-hour forecasts. For the winter case, aircraft, ATOVS, and ESA have the greatest total impact for the 24-, 36-, and 48-hour forecasts respectively, while ESA has the greatest impact per observation. Most of the observation effects are horizontally located upwind or in the vicinity of the Korean peninsula. The fraction of beneficial observations is less than 50%, which is less than the results in previous studies. As an additional experiment, the total moist energy norm is used as a response function to measure the sensitivity of 24-hour forecast error to observations. The characteristics of the observation impact with the moist energy response function are generally similar to those with the dry energy response function. However, the ATOVS observations were found to be sensitive to the response function, showing a positive (a negative) effect on the forecast when using the dry (moist) norm for the summer case. For the winter case, the dry and moist energy norm experiments show very similar results because the adjoint of KMA UM does not calculate the specific humidity of ice properly such that the dry and moist energy norms are very similar except for the humidity in air that is very low in winter.

• 농업생명과학연구
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• 제44권5호
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• pp.23-27
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• 2010

초장은 절화국의 외적 품질을 결정하는 매우 중요한 요소이다. 본 실험은 단일처리 후 광량의 차이에 따른 절화국화 광합성 효율과 줄기 신장에 미치는 영향을 알아보기 위하여 growth chamber내에서 수행되었다. 정식 7일 후 단일처리 (day/night, 11/13h)를 개시하였으며 이때 광량은 LEDs array (blue+red)를 이용하여 60, 100, 140, 그리고 $180mol{\cdot}m^{-2}{\cdot}s^{-1}$로 각각 유지하였다. 본 실험의 결과, 광도의 증가에 따른 순 광합성률은 꾸준히 증가하는 직선 회귀의 상관관계가 있었다. 광도의 차이가 꽃눈 분화의 시기에는 영향을 미치지 않았다. 초장, 엽면적, 그리고 건물중 등의 생육은 광도의 증가에 따라 증가 하였으나 140과 $180mol{\cdot}m^{-2}{\cdot}s^{-1}$에서는 처리 간 차이가 나타나지 않았다. 이상의 결과에서 LEDs array를 이용한 $140mol{\cdot}m^{-2}{\cdot}s^{-1}$이상의 광도는 절화국의 줄기 신장에 효과가 없는 것으로 판단되었으며 광도의 증가에 따른 순 광합성률의 증가가 생육의 증가와 일치하지는 않음을 알 수 있었다.

• 한국지구과학회지
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• 제42권5호
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• pp.504-513
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• 2021

대한민국 기상청에서 사용하고 있는 UM (Unified Model, UM) 모델의 국지예측시스템(Local Data Assimilation and Prediction System, LDAPS)은 수치모델 모의 시 대기경계층 유형에 따라 물리과정을 다르게 계산하기 때문에 이 과정을 검증하는 것은 모델의 정확도 향상에 중요하다. 따라서, 본 연구에서는 수치모델의 대기경계층 유형을 관측자료를 기반으로 검증하였다. 관측자료를 기반으로 대기경계층 유형을 분류하기 위해서 보성 표준기상관측소에서 수행한 여름철 집중관측자료(라디오존데, 플럭스관측장비, 도플러 라이다, 운고계)를 활용하였으며, 2019년 6월 18일 부터 8월 17일 까지 61일 동안에 총 201회의 관측자료를 분석하였다. 또한 관측자료와 수치모델 결과가 다른 경우를 보면, 관측자료를 기반으로 한 대기경계층 유형 분류 결과에서 2유형으로 분류되는 사례가 수치모델에서는 1유형으로 분류된 사례가 53회로 가장 많이 나타났다. 그 다음으로는 관측자료를 기반으로 한 대기경계층 유형 분류 결과에서 5유형과 6유형으로 분류되는 사례가 수치모델에서는 3유형으로 분류된 사례가 많이 나타났다(각각 24회, 15회). 관측결과와 수치모델 모의 결과가 일치하지 않은 사례는 모두 층적운 접합 여부 및 적운 모의 등 수치모델의 구름물리 부분의 모의 성능에 기인하여 발생한 것이라고 분석된다. 따라서, 대기경계층 유형 분류의 구름물리과정의 모의 정확도를 개선하면 수치모델 성능이 향상 될 것으로 판단된다.

• 가족자원경영과 정책
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• 제13권3호
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• pp.85-101
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• 2009

The Multi-cultural Family Support Center provides various educational programs and services for multi-cultural families. However, there are controversies regarding integration and assimilation, ethnic identity and ethnocentrism, and state-sponsored multi-culturalism. From the home economist's perspective, it was necessary to explore the direction of integration of family life culture in the multi-cultural society. This study concluded that there is a necessity to accept foreign culture and create a new culture while still maintaining their and our own cultural identity respectively. For this purpose, integration and assimilation must progress side by side to maintain the cultural identity and stability of multi-cultural families. But, women migrants are to adapt in their everyday life, they need to attend a Korean-language course and take part in a traditional Korean culture program such as having an assimilational characteristics. Also for the happiness of multi-cultural families ultimately not for the confronted problems, it requires sometimes education of changing migrants' own traditional customs and life culture partly. In this sense, educational and cultural programs held by Multi-Cultural Family Support Center are meaningful and their importance in adapting into everyday life must be recognised by all of us.

• 인문언어
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• 제6권
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• pp.265-291
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• 2004

The main purpose of this paper Is to analyze the characteristics of the Korean language used as a major communication means within the Korean community in Chenguoz District of Harbin, Heirungjiang Province, China, in terms of its phonology, morphology and syntax. The study focuses on how a variety of languages and dialects including Chinese, the Standard Chinese Korean adopted as a means of teaching in Korean schools, and Kyongsang Dialect of Korean have influenced the language of the community. It also deals as background information with the history of the community, the attitude of the community members toward Korean and Chinese, and their proficiencies of Korean and Chinese, to obtain the general picture of the bilingualism of this community. This specific region was studied since this region and most of the Korean communities in the Heirungjiang province were formed by descendents of the immigrants from the southern provinces of the Korean Peninsula, which allows the comparison between the language used today and the language their ancestors used before moving to this area. Due to the industrialization and innovation brought about by the opening of the Chinese society, the fast outward flow of youths to urban areas, and greater assimilation threats from the embedding Chinese culture, we are not too sure if the Korean language will continue to be used in the future. Given these circumstances, we consider this research most opportune in that it provides a look into the Korean community that developed its distinctive culture and language within an isolated cultural environment.

• 인문언어
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• 제6권
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• pp.241-263
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• 2004

The main purpose of this paper is to analyze the characteristics of the Korean language used as a major communication means within the Korean community in Chenguoz District of Harbin, Heirungjiang Province, China, in terms of its phonology, morphology and syntax. The study focuses on how a variety of languages and dialects including Chinese, the Standard Chinese Korean adopted as a means of teaching in Korean schools, and Kyongsang Dialect of Korean have influenced the language of the community It also deals as background information with the history of the community, the attitude of the community members toward Korean and Chinese, and their proficiencies of Korean and Chinese, to obtain the general picture of the bilingualism of this community This specific region was studied since this region and most of the Korean communities in the Heirungjiang province were formed by descendents of the immigrants from the southern provinces of the Korean Peninsula, which allows the comparison between the language used today and the language their ancestors used before moving to this area. Due to the industrialization and innovation brought about by the opening of the Chinese society, the fast outward flow of youths to urban areas, and greater assimilation threats from the embedding Chinese culture, we are not too sure if the Korean language will continue to be used in the future. Given these circumstances, we consider this research most opportune in that it provides a look into the Korean community that developed its distinctive culture and tanguage within an isolated cultural environment.