• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.42 no.3
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• pp.191-198
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• 2014

During multi-physics or multi-phase simulations accompanying fluid- structure- thermal interaction, data transfer problems always arise along non- matching interfaces caused by different computational meshes for each physical domain. Common- refinement scheme, among many available methods, is attractive since it is known to yield conservative and accurate data transfer for non- matching interface cases. This is particularly important in simulating compressible unsteady fluid- structure- thermal interaction inside solid propellant rockets, where grid size along solid- fluid interfaces is substantially different. From this perspective, we examine performances of common- refinement- based data transfer scheme between structured quadrilateral (structure part) and unstructured triangular (fluid part) meshes by comparing computed results with other data transfer methods.

• Communications of Mathematical Education
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• v.12
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• pp.93-102
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• 2001

수학은 합리적이고 논리적으로 사고하는 양식(style)의 학문으로서 과학기술이 발전함에 따라 점진적으로 변화하고 확장되는 개념의 집합체이다. 불확실한 미래사회에 대비하기 위하여 문제해결, 추론 및 의사결정의 기법은 학교수학에서 더욱 강조되어야 한다. 이러한 사회환경의 변화에 적극적으로 대처하기 위하여 7차 교육과정의 기본 방향을 ‘자율적 ${\cdot}$ 창의적인한국인 육성’으로 설정한 교육부는 국민 공통 기본 교육과정의 수학을 ‘단계형 수준별 교육과정’으로 규정하고, 1학년에서 10학년까지를 20개의 소단계(1-가에서 10-나)로 세분하고 있다. 그러나 단계형 수준별 교육과정을 지나치게 의식하게 되면, 학생들의 개인차나 협동학습, 학습평가 등의 교수 ${\cdot}$ 학습의 여러 측면에서 자칫 혼란이 우려된다. 이에 본 연구에서는 수준별 교육과정을 운영하고 있는 뉴질랜드의 교육과정을 살펴보고, 학생들의 자율성과 창의성을 신장할 수 있는 방안으로서 교과서의 재구성 방안과 이에 따른 교사의 역할을 살펴보고자 한다.

• Journal of Korean Library and Information Science Society
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• v.51 no.1
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• pp.179-200
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• 2020

This study aims to detect the knowledge structure of Korean studies using document co-citation analysis and text mining techniques. This study divided Korean corpus into two perspectives: Self-perceived and others' perceived Korean studies. To this end, we collected 10,929 humanities and social literature containing the word Korea or Korean as a keyword in the SCOPUS database. As a result of analysis, a total of 20 subdomains were found in the knowledge structure of self-perception, and a total of 14 subdomains were found in the knowledge structure of otherts' perception. Differences in Korean Studies between two are: First, the sub-area of self-perceived Korean studies is subdivided into more diverse areas than the sub-area of other-perceived Korean studies. Second the major areas in self-perceived Korean studies are customers and services, industrialization, multiculturalism, mental health, tourism, Korean language, environment, and cities. Others' perceptions of Korean Studies are grouped into domestic and foreign situations of Korea, Korean pop culture, Koreans as US immigrants, and Korean language. Finally, the common areas of self-perception and others' perception were mental health, tourism, Korean language, North-Korean defectors, and juvenile delinquency.