• 한국초등과학교육학회지:초등과학교육
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• 제35권4호
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• pp.389-405
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• 2016

The purpose of this study was to analyze elementary school teachers' understanding, certainty, and familiarity with 13 key concepts of wave physics that are presented in textbook and teacher's guidebook. 123 elementary school teachers answered concept tests and questionnaires. In the results to these tests and questionnaires, teachers demonstrated a high level of understanding and high certainty in understanding with regard to the concepts of sound generation, effect of medium on wave, timbre, wavelength, and trough and crest of wave. For the topics of sound velocity, wave reflection and wave transmission, teachers demonstrated a high level of understanding but low certainty in understanding. With regard to sound propagation, teachers demonstrated a low level of understanding and an improperly high certainty in that low understanding. Teachers lacked knowledge, i.e., displayed a low level of understanding and low certainty in sound strength, sound frequency, constructive interference and destructive interference. In constructive and destructive interference, the teachers also displayed a low level of familiarity. We analyzed the differences in teacher's understanding, certainty, and familiarity according to teacher demographics defined by the teacher's gender, teaching experience with concepts of sound, career, curriculum track while in high school, and major in university. There were no significant differences in understanding, certainty, or familiarity as defined by gender, teaching experience, and career. However, these displays of knowledge were affected by the teacher's curriculum track in high school and their major. These results suggest that the teacher's understanding of, familiarity with, and certainty in wave physics concepts are more influenced by their learning experience than by their teaching experience. Therefore, we suggest additional learning opportunities for teachers (such as teacher training programs) in order to improve teacher knowledge and correct teacher misconceptions in wave physics.

• 대한수학교육학회지:학교수학
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• 제5권1호
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• pp.43-58
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• 2003

본 연구에서는 남북한 초등학교 수학교과서의 외형과 단원체제, 각 영역별 내용 요소의 비중과 도입시기, 문장제의 소재 등 다소 양적인 비교에 초점을 둔 선행연구에 기초하여, 남북한 초등학교 수학교과서를 내용 구성과 전개 과정에서의 구체적인 특징에 주목한 질적인 관점에서 비교.분석하였다. 먼저 내용 구성에 관한 비교 결과는 다음과 같다. 첫째, 초등학교 학생들의 정의적.인지적 특성을 고려하여 학습 내용을 분산.교차하여 배치하는 남한과 달리 북한에서는 관련된 요소를 집중 배치하는 방식으로 구성되어 있다. 둘째 생활 소재를 통하여 문제상황을 제시하고 점진적이고 구체적인 활동으로 학습 내용을 제시하는 남한과 달리, 인민학교 교과서에서는 여러 형태의 문제를 통하여 학습을 유도하고 있다. 또한 내용 전개의 주요 전략으로 남한은 '안내'를. 북한은'설명'을 따르는 것으로 파악된다. 단계화된 탐구형 질문으로 안내하면서 학습을 유도하는 남한과 달리 북한에서는 의미 있는 설명을 통하여 학습 내용을 다루는 것으로 확인되었다.

• 대한수학교육학회지:학교수학
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• 제11권2호
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• pp.261-280
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• 2009

본 연구는 현재 우리나라 고등학교 1학년 명제단원의 내용 체계가 수학적 논리사고를 함양하기 위한 기초 준비로는 너무 약화되어 있어, 그러한 명제 교육을 받고 대학에 진학한 신입생들이 명제와 관련된 개념 이해에서 많은 어려움을 보일 것이라는 가정 하에서 진행되었다. 이에 본 연구는 제 7차 수학과 교육과정에 따른 명제교육을 받고 지방 중위권 대학에 입학한 이공계 신입생들의 명제에 대한 이해 정도를 알아보기 위해, 대학 기초 수학 학습에서 요구되는 기본 명제 개념들로 이루어진 문제를 적용하고, 그 문제 해결과정에서 보이는 신입생들의 오류와 특징들을 조사, 분석하였다. 본 연구의 결과는 이공계 신입생들의 명제 관련 개념들에 대한 이해 실태를 보고함으로써, 대학 수학 교육에서 수학적 논리 기초 개념들에 대한 지도를 어느 수준까지 해야 할 것인가에 대한 시사점을 제공하는데 그 의의가 있다.

• 공업화학
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• 제22권5호
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• pp.566-574
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• 2011

석탄가스화기는 석탄가스화복합발전과 석탄간접액화 공정에서 고효율을 얻기 위한 중요한 설비 중 하나이다. 현재 여러 종류의 석탄가스화기가 성공적으로 사용되고 있지만, 간단하면서도 신뢰도를 높일 수 있는 다양한 설계 변경이 가능하다. 건식 분류층 가스화기 4종류의 형태를 제시하고 이들을 체류시간, 가스화기 출구 합성가스의 온도, 합성가스 조성을 중점으로 비교하였다. 설계개념이 적정한지를 우선 파악하고자 반응을 배제한(cold-flow) CFD 해석을 먼저 수행하였고, 실제 가스화기 조건을 반영한 화학반응이 고려된(hot-flow) 해석을 수행하여 비교하였다. 가스화기 설계에 CFD를 적용하는 데는 슬랙의 거동과 슬랙탭 설계 등 측면에서 제한적이기는 하지만, 다양한 설계개념 중에서 가능성이 높은 가스화기 형태의 범위를 좁히는 데 매우 유용하게 사용될 수 있다.

• 대한지역사회영양학회지
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• 제26권6호
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• pp.429-440
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• 2021

Objectives: Standardized guidelines and reference points for a food security policy are necessary to guarantee that basic social safety nets work properly. Therefore, this study aimed to explore the basic concepts and detailed dimensions of food security, including the potential relevant indicators, and sought to establish standardized well-being baselines. Methods: A literature review and 14 expert roundtable discussions were carried out to analyze and extract the key concepts of food security. After determining these concepts and detailed dimensions of food security, a conceptual framework was modeled. Then, indicators for each local government that could be monitored and evaluated for each sub-area were suggested. Results: The concept of food security was defined as follows: Individuals should be provided with sufficient, safe, and quality food, which should be accessible to the community and available for use to achieve health and well-being. In addition, food security should be ensured sustainably in a changing environment. Four dimensions were suggested while conceptualizing food security. First, sufficient food, which means sufficient food supply in quantity, quality, and safety. Second, equitable food which includes creating environments in which high-quality and safe food can be purchased at an appropriate price and can be provided regardless of the socioeconomic gap. Third, healthy food which should be provided to promote people's health and happiness through the eco-friendly consumption of food. Fourth, sustainable food, which can be supplied in a sustainable manner and as part of an eco-friendly food system that considers the conservation of natural environments. Conclusions: The basic concepts and detailed areas of food security including the potential indicators proposed in this study, may be useful for developing and implementing various policies and programs to support food and nutrition security in the future.

• 한국간호교육학회지
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• 제14권2호
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• pp.244-251
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• 2008

Purpose: This research was aimed to explore the major subjects and research themes and to classify characteristics of the key words in the Journal of Korean Academic Society of Nursing Education 2007. Method: A total of 33 published papers during 2007 were analyzed with structured analysis forms. Result: Most of the research subjects were healthy people such as student nurses and RNs. The topics of education related research were categorized into 9 domains: educational methods, educational curriculum, study type & methods, knowledge level & contents, psychosocial variables related to knowledge & education, attitude, behavior, development & evaluation of educational programs, and effects of educational programs. The most common key words in this papers were concepts related to health risk factors and health promotion. Quantitative research was used about 70% overall, while experimental design was 18.2%. Conclusion: Most of the subjects were healthy people and the most common domain was health related concepts in the Journal of Korean Academic Society of Nursing Education. In addition, key words and topics were on nursing educational issues. It can be concluded that the Journal of Korean Academic Society of Nursing Education has published mainly education focused papers.

• 한국학교보건학회지
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• 제28권1호
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• pp.10-21
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• 2015

Purpose: In this study, the research has been conducted on the health teachers and general teachers who are in charge of sexual education in the middle schools to find out their understanding on the degree of importance and degree of performance on key concept of the sex education and then compare their differences in the recognition of sex education which leads to find out the contents and range of capabilities required for the teachers in charge of sex education. Methods: A descriptive research on 77 health teachers and 71 general teachers using IPA and SPSS/WIN was practiced. Results: The result of research showed that there are significant differences in the annual hours for sex education of their schools, the contents of the sex education which was given in the lecture type lesson, and their performance degree. It was also found the distribution of key concepts by differences in IPA matrix. Conclusion: As there are the differences in the performance degree in sex education between health teachers and general teachers in middle school, more specific education for each of them is needed. And the way to reinforce the key concepts, which are found high in perceived importance degree for both health teachers and general teachers, but low in the performance degree should be considered.

• 패션비즈니스
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• 제13권5호
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• pp.135-148
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• 2009

The purpose of this research is to examine changes in Japanese fashion design through analysis of the background and characteristics of 'Japanesque Modern'. With the advent of globalization and pressures to enhance international competitiveness, key players in both Japanese government and industry feel an urgent need to establish a distinctive brand for its products. 'Japanesque Modern' was launched in January 2006 as a nationwide campaign through the support of the Japanese Ministry of International Trade and Industry (MITI). 'Japanesque Modern' strives to be a national movement, enhancing Japan's brand image while promoting continuous industrial innovation. 'Japanesque Modern' unites Japanese culture, design, and aesthetics with advanced technology, bringing traditional concepts to enrich contemporary life styles. In order to exemplify the 'Japanesque Modern' ideal, existing market products and content that reflect the concept were selected for the 'Japanesque Modern Collection' by the Japanesque Modern Council. In making these selections, the Council emphasized criteria based on three Japanese spiritual values: Craftsmanship; Manner; and Hospitality. As a result, three designs concepts have emerged in the 'Japanesque Modern Collection': the 'convergent method'; the 'conversion method'; and the 'emphasis method'. This research will explore these design concepts and their relationship to 'Japanesque Modern'.

• 한국항공우주학회지
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• 제43권4호
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• pp.349-358
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• 2015

본 논문은 미래 항공교통관리(Air Traffic Management, ATM)의 핵심개념으로 받아들여지고 있는 궤적기반운용(Trajectory-based Operations, TBO)에 대한 기술동향을 담고 있다. ICAO(International Civil Aviation Organization)가 발표한 ASBU(Aviation System Block Upgrade)에 기술된 TBO 운용개념을 살펴보고, 미국과 유럽에서 각각 진행 되어온 궤적기반운용에 대한 운용개념 수립과 관련 연구개발 사례들을 통해 근 미래에 실현 가능한 운용개념 및 절차를 구체화하였다. 운용개념 정리를 통해 파악된 요소기술들(technical enablers)을 간단히 소개하며, 관련된 연구개발 진행 현황을 정리하였다.

• 대한한의학원전학회지
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• 제27권4호
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• pp.133-151
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• 2014

Objectives : In this study, the changes of concept of Bianzheng(辨證)[syndrome differentiation] in the traditional medical history are investigated for the purpose of understanding conditions of Korean Medicine in modern times. Methods : The concepts of Zheng(證)[syndrome] and Bianzheng[syndrome differentiation] in Sanghanron(傷寒論) and many important medical literatures were selected and analyzed to overview the historical changes of those. Results : To the modern ages, the concept of Zheng had included the two kinds of concepts, that is, symptom/sing and syndrome with slight changes of meaning. As a abstract meaning of syndrome, Zheng(證) has been systematized and complicated with the times, that means changes of syndrome differentiation. The concept of Zheng has been recognized as the symbol that expresses the characteristics of Traditional Medicine since the modern age that concepts of sign and symptom have flowed from Western Medicine into Traditional Medicine. Conclusions : One of the main key of studies about Bianzheng(辨證) in future would have been harmonizing the balance between the two trends of modern Traditional Medicine, ideation and objectification.