• 공학교육연구
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• 제16권3호
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• pp.10-19
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• 2013

Recently, Korean universities have increased the number of English Medium Instruction (EMI) lectures in order to allow students to gain both specialized knowledge and enhanced English ability. Previous researches on effective EMI lectures have focused on exploring the effects of learners' cognitive and affective characteristics on learning outcomes. Whereas the input variables of learning have been investigated as predicting variables of effects in EMI lectures, there has been a few research for investigating process variables to yield learning outcomes. The purpose of this study is to analyze the structural relationships among variables affecting on learner satisfaction and effects. The participants are 209 engineering students from various majors. Independent variables are defined as English motivation, English competency, and English confidence, a mediated variable is Cognitive engagement, and dependent variables are Learning satisfaction and Educational effect perception. The results show that the relationships are statistically significant: learners' English competency & English confidence ${\rightarrow}$ Cognitive engagement ${\rightarrow}$ Learning satisfaction ${\rightarrow}$ Educational effect perception. Especially, the structural model confirms that the effect of learners' English confidence on Learning satisfaction and Educational effect perception is mediated by the level of learners' Cognitive engagement. Further, the implication for effective EMI lectures is discussed based on the observed research results.

• The Journal of Asian Finance, Economics and Business
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• 제7권6호
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• pp.255-264
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• 2020

The fourth industrial revolution has attracted much academic attention in these past few years. However, research on systematic and extensive factors affecting adoption of Industry 4.0 by SMEs in developing countries, especially in Vietnam, has been unavailable. This study aims to explore the impact of factors that influence the actual adoption of Industry 4.0 by SMEs in Ho Chi Minh City. Mixed-method research was utilized in this study including in-depth interviews of 12 participants and quantitative research of 396 respondents who are representative of SMEs by both online and via paper surveys. The SPSS and SmartPLS 3 software were employed to help analyze the collected data. The results indicate that perceived development of the human resource, perceived on-time, perceived saving cost, perceived improve product quality, perceived saving time, perceived ease-of-use, business resources, and conditions of the business environment, perceived usefulness, perceived enhanced customer relationship, and adoption intention, all have a positive significant effect on actual adoption of Industry 4.0. The results seem to suggest that managerial efforts aimed at increasing the factors' perceptions of adoption of Industry 4.0 and personal relevance of the technology will contribute to implementation success, where success is defined as effectual usage of the Industry 4.0.

• 한국가축번식학회지
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• 제19권4호
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• pp.265-270
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• 1996

This study was carried out to investigate on the survival rates and in vitro developmental rates of bisected bovine embryos by micromanipulator and micropipette. Bisected embryos were cultured for 1∼5 days in 20% FCS＋TCM-199 medium. Survival rate and in vitro developmental rate were defined as development rate on in vitro culture or FDA-test. The results are summarized as follows ; 1. The survival rates of intact or free zona pellucida of bisected embryos were 30.3 and 25.0%, respectively. And the survival rates of bisected embryos by micromanipulator and micropipette were 33.3 and 26.7%, respectively. The survival rate of bisected embryos was significantly lower than that of non-bisection embryos(65.0%). 2. The survival rates of bisection embryos in cultured for 12, 24, 48, 72 hrs with 20% FCS＋TCM-199 medium were 40.0, 30.0, 23.3 and 13.3%, respectively. 3. The in vitro developmental rates of intact of free zona pellucida of bisected embryos by micromainipulator and micropipettes were 33.3 and 26.7%, respectively. The survival rate of bisection embryos was significantly lower than that of non-bisection embryos(45.0%).

• Journal of Advanced Marine Engineering and Technology
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• 제34권5호
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• pp.718-724
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• 2010

공동수조와 예인수조에서의 프로펠러 단독특성 차이를 보정할 수 있는 위벽효과 연구를 수행하였다. 우선 공동수조의 실험에서 프로펠러의 상류가 아닌 작동 평면 위치에서 계측된 유속을 프로펠러 전진속도로 정의할 경우, 위벽효과의 수정 량 및 단독특성차이가 현저히 줄어드는 것을 확인하였다. 다음으로 양력판 이론에 의한 단독특성 계산을 통해, 프로펠러 평면에서의 위벽효과를 구하고 앞의 결과에 추가적인 보정을 수행하였다. 그 결과, 예인수조에서의 단독특성과 더욱 더 좋은 일치를 보여 주는 것을 확인하였다.

• The Journal of Asian Finance, Economics and Business
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• 제6권4호
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• pp.235-248
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• 2019

This study empirically analyzes how the career orientation factors of startup entrepreneurs affect entrepreneurial satisfaction as well as business sustainability. We propose directions for startup sustainability and development. Based on previous research, we defined the career orientation of entrepreneurs through the five orientation factors of security, autonomy, technical competence, managerial competence, and entrepreneurial creativity. We constructed a research model to determine whether these factors have a causal relationship with entrepreneurial satisfaction or business sustainability through the medium of organizational entrepreneurship. We surveyed startups in Korea using a questionnaire and collected and analyzed a total of 282 points of survey data. The analysis results demonstrated that the entrepreneurial creativity and managerial competence of the members of a startup can play an important role within entrepreneurial satisfaction and business sustainability. Both autonomy and technical competence exhibited no effect on entrepreneurial satisfaction and business sustainability through the medium of entrepreneurship, while security showed a negative effect. In order to improve entrepreneurial satisfaction and achieve business sustainability, we confirmed that it was more important for startups to consider the creativity and business management competences of entrepreneurs rather than pursue business security or have a technology-oriented attitude.

• 한국음향학회지
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• 제7권4호
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• pp.117-126
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• 1988

산란된 파동의 형태는 그 산란체의 기하학적 형상 및 위치에 따라 변한다. 본 논문에서는 매질 내에 임피던스를 가지는 무한 실린더가 있는 경우 평면 입사파에 대한 산란된 파동을 유도하였고 그 결과로부터 산란된 파동의 방향성을 나타내는 지표로서 전방 산란파의 peak 값에 대해 산란파의 크기가 반으로 떨어지는 각도를 구하였다. 이 각도를 검토해 본 결과 입사파의 주파수 및 거리에 따라 그 각의 변화가 뚜렷함을 볼 수 있었다. 따라서 매질 내에 어떠한 산란체가 있는 경우 이 각도가 산란체의 위치 및 형상을 추정하는데 유용하게 적용될 수 있을 것이라 생각된다.

• 한국암반공학회:학술대회논문집
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• 한국암반공학회 2000년도 암반공학문제의 수치해석(Numerical Analysis in Rock Engineering Problems)
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• pp.139-146
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• 2000

지하 채굴에 따른 침하와 수리전도도의 변화 양상에 관하여 조사를 하였다. 채굴 후 암반내 발생하는 변형률과 변형률 의존 수리전도도와의 상호 관계를 나타내는 식을 얻기 위하여 절리 암반을 등가 다공질 매질로 고려하였으며, 단일 절리의 수리전도도는 평행판 이론을 적용하여 결정하였다. 해석 결과에 따르면 채굴 후 암반내 수리전도도의 변화는 침하에 의해 발생한 변형률에 직접적으로 연관이 있는 것으로 나타났다. 채굴적의 폭을 증가시킴에 따라 최대 침하량과 수리전도도의 크기가 증가하였다. 절리 간격은 수리전도도의 변화에 영향을 주는 것으로 나타났다.

• 터널과지하공간
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• 제10권3호
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• pp.387-394
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• 2000

지하 채굴에 따른 침하와 수리전도도의 변화 양상에 관하여 조사를 하였다. 채굴 후 암반내 발생하는 변형률과 변형률 의존 수리전도도와의 상호 관계를 나타내는 식을 얻기 위하여 절리 암반을 등가 다공질 매질로 고려하였으며, 단일 절리의 수리전도도는 평행판 이론을 적용하여 결정하였다. 해석 결과에 따르면 채굴 후 암반내 수리전도도의 변화는 침하에 의해 발생한 변형률에 직접적으로 연관이 있는 것으로 나타났다. 채굴적의 폭을 증가시킴에 따라 최대 침하량과 수리전도도의 크기가 증가하였다. 절리 간격은 수리전도도의 변화에 영향을 주는 것으로 나타났다.

• 한국동물학회지
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• 제34권2호
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• pp.209-216
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• 1991

신경세포의 분화에 미치는 insulin의 영향을 알아보기 위하여 계배의 단뇌 신경아세포를 serum-free defined medium에서 배양하였다. Immunofluorescence실험을 통하여 신경특이단백질인 MAP-2는 신경아세포의 세포체와 신경돌기에 존재하는 것으로 나타났다. 또한, 배양액내에 insulin의 농도를 증가하면 신경아세포의 신경돌기 형성이 증가할 뿐 아니라 MAP-2의 합성도 증가하였다. 따라서, 신경아세포의 형태적분화와 생화학적 분화는 서로 밀접하게 연관되어 일어나는 것으로 추측되며, insulin은 신경특이단백질의 합성을 촉진시킴으로써 신경아세포가 신경돌기를 형성하며 분화되어 가는데 결정적인 역할을 하는 것으로 보인다.

• 건축역사연구
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• 제23권2호
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• pp.65-80
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• 2014

This study was aimed at analyzing the location and the characteristics of the Urban hanok tissues that were formed in the downtown since 1920s. Focusing on the relationship between roads and lots, the developing process and the typological characteristics are examined. Through dividing the large and medium lots of the aristocratic families and on the hilly area near the Seoul City Wall, various shapes of urban hanok tissue were evolved. The urban hanok tissues developed before 1936 locate on the downtown sites, while those developed after 1936 locate on the hilly sites. The location of the tissues were identified in the upper area of Jong-no street. The former is composed of small size lots divided into average area $104.4m^2$ with the narrow alleys of about 2.0m width, while the latter is composed of medium size lots divided into average area $131.54m^2$ with the alleys of about 4.0m width. Moreover the structures of the tissues were evolved based on the developing period and the site condition. Moreover the structures of the tissues were evolved based on the developing period and the site condition. The typological characteristics were defined as the four patterns categorized with the bilateral concepts of alley's form and of alley's spacial feature.