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安德文의 三山書院 位相鼎立과 그 의미
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SNS(Social Network Service)기반 협동학습 모형 개발 및 적용 연구
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Musharbash^ yasmine & geir henning presterudstuen (eds). monster anthropology in australasia and beyond. 228 pp.^ map^ illus.^ bibliogrs. new york: palgrave^ 2014. £60.00 (cloth)
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Emergence and Wide Dissemination of CTX-M-type ESBLs^ andCMY-2- and DHA-1-type AmpC -Lactamases in Korean RespiratoryIsolates of Klebsiella pneumoniae
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- 저자 : 이지애 (검색결과 152 건)
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과학 영재 학급 학생들의 소집단 STEM 프로젝트 학습을위한 안내된 프로젝트 학습 모형의 개발
이지애,김영민 韓國英才學會 2017 영재교육연구 Vol.27 No.4
The purposes of this study are to develop a teaching-learning model to support scientifically gifted secondary students in project-based learning through STEM task and provide practical considerations for its implementation in STEM classroom. For those purposes, at first, the problems with project-based learning for gifted students in STEM education were analyzed through theoretical review, and then existing general project-base learning model was applied for STEM project learning, checking and finding addictive problems and solutions. Two small groups of science gifted students participated in this study. In the teaching-learning model developed for the project-based learning of STEM, teacher’s important scaffolding elements are included in steps of the general model, such as process continuing, method for finding appropriate information, providing necessary concepts, etc. 본 연구의 목적은 중등 과학영재들이 STEM 수업에서 효과적으로 프로젝트 학습을 수행할 수있도록 하는 수업 모형을 개발하고, STEM 프로젝트 학습을 교실 수업에 적용하는 데 있어서의시사점을 도출하는 데 있다. 이를 위해 선행연구 분석을 통해 프로젝트 학습과 관련된 문제점을추출한 다음, 일반적인 프로젝트 학습 모형을 소집단 STEM 프로젝트 학습에 투입하여 개선점을찾아 모형을 구체화하였다. STEM 프로젝트 학습에 참여한 집단은 2개 집단이며, 모두 과학중점학교의 과학 영재학급 학생들이다. 본 연구에서 프로젝트 학습의 일반적인 모형을 실제STEM 프로젝트 학습에 적용해 본 결과, STEM 프로젝트 학습에서는 그 과정을 잘 유지하도록교사가 개입해야 하며, 학생들이 관련 정보를 찾고 잘 이해하도록 도와주어야 하며 때때로 스캐폴딩도 필요하다. 이외에도 여러 가지 교사가 안내해야 할 문제점들이 나타났으며 이러한 문제점들이 프로젝트 학습의 어떤 단계에서 필요한지를 파악하여 각 단계에서 교사의 역할을 정교화한 안내된 프로젝트 학습 모형을 제시하였다.
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이지애,박오원 글로벌경영학회 2011 글로벌경영학회지 Vol.8 No.4
The major purpose of this study is to investigate the mediating effect of employee behavior characteristics on the relationship between employee involvement and innovative performance. Many previous studies showed that employee involvement had a positive effect on organizational performance, few studies attempted to analyze the mediating process between the two variable above. In this study, we examined the mediation effect of behavior characteristics by classifying behavior characteristics into individual perspective and relational perspective. For this purpose, we conducted empirical analysis using 240 manufacturing firms. The results showed that employee involvement have positive effect on behavior characteristics (i.e.;personal initiative and information sharing) and these behavior characteristics also positively affected innovative performance. Lastly, we found that behavior characteristics fully mediated the relationship between employee involvement and innovative performance. 본 연구의 기본적인 목적은 종업원 참여제도와 혁신성과간의 관계에 있어서 종업원 행동특성의 매개효과를 검증하는 것이다. 종업원 참여제도가 조직성과에 긍정적인 영향을 미치는 것은 여러 실증연구를통해서 밝혀졌으나 이들간의 매개과정에 대한 연구는 부족한 편이다. 본 연구에서는 조직성과를 혁신성과로 파악한 후 종업원 특성을 개인성과 관계성의 두 가지 차원으로 분류하여 종업원 행동특성의 매개효과를 검증하였다. 이러한 연구목적을 위하여 240개 국내 제조업 기업을 대상으로 실증분석한 결과 종업원 참여제도는 종업원 행동특성인 개인 주도성과 정보 공유에 긍정적으로 작용하였으며, 이러한 행동특성은 혁신성과에도 긍정적인 영향을 주었다. 마지막으로 두 가지 종업원 행동특성은 종업원 참여제도와 혁신성과간의 관계를 완전매개하는 것으로 나타났다.
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Room-temperature Resistivities and PTCR Properties of Er-doped (Ba,Sr,Ca)TiO3
이지애,한영호 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.2
The effects of substitution of Sr and Ca at Ba sites on the positive temperature coefficient of resistance (PTCR) characteristics of Er-doped BaTiO3 have been studied. In (Ba0.996−xSrxEr0.004)0.997TiO3 system, the room-temperature resistivity (ρ25) and temperature coefficient of resistance (TCR,α) decreased with increasing Sr content. As the SrO content was increased, the Curie temperature shifted to lower temperatures by 2.6 ℃/mol%. The room-temperature resistivity also decreased with increasing CaO content in (Ba0.996−yCayEr0.004)0.997TiO3. However, the shift in the Curie point was negligibly small with increasing CaO content. The system co-doped with 10 mol% SrO and 10 mol% CaO, (Ba0.796Sr0.10Ca0.10Er0.004)0.997TiO3, showed the lowest room-temperature resistivity (3.5Ω·cm). The effects of substitution of Sr and Ca at Ba sites on the positive temperature coefficient of resistance (PTCR) characteristics of Er-doped BaTiO3 have been studied. In (Ba0.996−xSrxEr0.004)0.997TiO3 system, the room-temperature resistivity (ρ25) and temperature coefficient of resistance (TCR,α) decreased with increasing Sr content. As the SrO content was increased, the Curie temperature shifted to lower temperatures by 2.6 ℃/mol%. The room-temperature resistivity also decreased with increasing CaO content in (Ba0.996−yCayEr0.004)0.997TiO3. However, the shift in the Curie point was negligibly small with increasing CaO content. The system co-doped with 10 mol% SrO and 10 mol% CaO, (Ba0.796Sr0.10Ca0.10Er0.004)0.997TiO3, showed the lowest room-temperature resistivity (3.5Ω·cm).
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Novel Convenient Method to Determine Wettability and Dispersibility of Dairy Powders
이지애,채창훈,박동준,임광세,임지영 한국축산식품학회 2014 한국축산식품학회지 Vol.34 No.6
This study was carried out to develop a simple, convenient, and reproducible testing device to determine wettability anddispersibility of dairy powders. The testing device consists of a sieve (150 µm) attached to a sample chamber, sensorsmounted on a supporting body and a main control unit containing a display panel. The sensors detect the difference in elec-trical resistance between air and water. A timer is automatically triggered by the sensor when the bottom of sample-loadedchamber contacts water in the petri dish. Wettability and dispersibility of commercial skim milk powders (SMPs) producedat different heating strengths (low-, medium-, and high-heat SMP) are compared using the new testing device. Wettabilityof the SMPs were correlated with particle size and are found to increase in the order of medium-, low-, and high-heat SMPregardless of the amount of sample tested. Dispersibility of SMPs showed the same trend and high heat-SMP which has thesmallest particle size resulted in the lowest dispersibility. Unlike existing methods, the new testing device can determineboth wettability and dispersibility of powders and successfully detected differences among the samples.
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연주문(連珠文)에 나타난 상징적 문양의 기원과 의미에 대한 고찰
이지애 한국감성과학회 2021 춘계학술대회 Vol.2021 No.-
The purpose of this study is to analyze the origin and symbolic meaning of the pearl rounded motif in various aspects. First, it was found that the basic shape and pattern of the pearl rounded motif 'circle' was one of the shapes with meaning of Korea that appeared from the period before Gojoseon. Second, the basic shape of the pearl rounded motif could be found from the study of the shape of the Yut board of Yutnori, a play of Gojoseon that reflects the Big Dipper, which depicts the principles of the sky and the earth. Third, as a result of research on the shape of bronze mirrors such as Danyugyeong and Danyusemungyeong, which are composed of small circles at regular intervals at the edge of the circular basic shape, it was found that the pearl rounded motif shape has already appeared since the Gojoseon period. Therefore, it can be assumed that the origin of the pearl rounded motif is not Sassanid Persia, but Korea.
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