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김재식 ( Jae Sik Kim ) 한국초등도덕교육학회 2010 초등도덕교육 Vol.0 No.32
이 논문의 목적은 도덕과 수업 목표 설정을 위해 학습 과제 분석을 탐색해 보는 것이다. 수업에서 수업 목표는 매우 중요하다. 왜냐하면 수업 목표는 수업의 방향을 결정하기 때문이다. 수업 목표는 수업의 내용과 방법 그리고 평가의 준거로서 작용한다. 따라서 도덕과 수업에서는 도덕과 수업 목표가 제대로 설정되었는지를 확인하는 작업이 반드시 필요하다. 일반적으로 도덕과 수업은 한 제재 당 3차시의 수업으로 이루어져 있다. 이러한 점에서, 도덕과 교육에서 최종 수업 목표는 한 제재 혹은 한 단원의 수업 목표로 간주될 수 있다. 그러므로 도덕과 수업을 위해 먼저 최종 수업 목표, 즉 단원 목표를 살펴보아야 한다. 단원 목표는 선행 학습이나 후속 학습을 고려하여 설정되었는지를 확인하여야 하며, 단원 목표를 확인한 후에는 구체적인 학습 과제 분석을 해야 한다. 그리고 학습 과제 분석을 통해 획득한 학습 내용 요소를 목표 진술 형태로 전환하여 단위 수업 목표를 설정한다. 이러한 일련의 수업 목표 설정 혹은 확인 작업을 통해, 교사는 단원의 수업 방향과 내용을 숙지하게 됨은 물론 학생들의 학습의 효과를 높일 수 있다. The purpose of this study was to inquiry learning task analysis for establishment of instructional objective in elementary moral education. Instructional objective is very important in a class. Because instructional objective decides a direction of instruction. Instructional objective operates as a criterion of content, method, evaluation. Accordingly, we have to ascertain whether instructional objective does go well or not. In general, elementary moral instruction is composed of 3th class per a unit. In this respect, unit instructional objective can be regarded as a terminal instructional objective in elementary moral education. So, first we have to consider unit objective for moral instruction. And we have to confirm how unit objective establishes. After we unit objective confirms, we should analyze a concrete learning task. And we have to establish specific instructional objective through conversion factors of learning contents into a form of objective statement. Though a series of this activity, teacher becomes well aware of direction and contents of unit. And this activity may be raise the effect of learning.
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CuO 대신 Cu 미분말 치환이 NiCuZn Ferrite에 미치는 영향에 관한 연구
김재식(Jae Sik Kim),고재귀(Jae Gui Koh) 한국자기학회 2003 한국자기학회지 Vol.13 No.1
Diffusion speed of Cu metal fine particle is fast better than CuO, so it will promote grain growth in sintering. In this paper, the influence on substituting Cu fine particle for CuO of NiCuZn ferrite with basic composition (Ni_(0.204)Cu_(0.204)Zn_(0.612)O_(1.02))Fe_(1.98)O_(2.98) has been investigated with varying Cu/CuO ratio. The perfect spinel structure of sintered specimen at 900℃ was confirmed by the analysis of XRD patterns. The best condition was obtained when the ratio of Cu/CuO was 60%, and the permeability was 1100 and Ms was 87 emu/g in this condition. Cu has influenced on grain growth in sintering, substituting Cu fine particle for CuO could lower sintering temperature over the 30℃. After sintering, substituting Cu performed as good as CuO.
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(1-x)Mg₄Ta₂O?-x(TiO₂, CaTiO₃, SrTiO₃) 세라믹스의 마이크로파 유전 특성
金再植(Jae-Sik Kim),崔儀善(Eui-Sun Choi),裴善基(Seon-Gi Bae),李永熙(Young-Hie Lee) 대한전기학회 2006 전기학회논문지C Vol.55 No.7
The effect of x on microwave dielectric properties of the (1-x)Mg₄Ta₂O?-x(TiO₂,CaTiO₃,SrTiO₃) ceramics for microwave components were investigated. All spcecimens prepared by the conventional mixed oxied method and sintered at 1450℃. Microwave dielectric properties of the (1-x)Mg₄Ta₂O?-xTiO₂ ceramics were influenced by MgTi₂O? phase. Also the microwave dielectric properties of the (1-x)Mg₄Ta₂O?-x(CaTiO₃, SrTiO₃) ceramics were dominated with an addition of CaTiO₃ and SrTiO₃. The dielectric constant (ε<SUB>r</SUB>), quality factor (Q×f<SUB>r</SUB>) and temperature coefficient of the resonant frequency (TCRF, τ<SUB>f</SUB>) of the (1-x)Mg₄Ta₂O?-x(TiO₂, CaTiO₃, SrTiO₃) ceramics were 12.96~70.98, 5,132~186,410 ㎓ and -35.82~+75.96 ppm/℃, respectively, and depend on x and addition materials.
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유한요소해석을 이용한 고무차륜 주행로 진동 저감 구조 개발
김재식(Jae-Sik Kim),이호용(Ho-Yong Lee),이일화(Il-Wha Lee),홍희록(Hee-Rok Hong),이강산(Kang-San Lee),이다솜(Da-Som Lee),서명원(Myung-Won Suh) 한국도시철도학회 2020 한국도시철도학회논문집 Vol.8 No.1
고무차륜 경전철은 저렴한 비용과 중규모의 수송능력을 갖춘 철도 시스템이다. 그러나 주거 밀집지역 주행 시 발생하는 소음에 대한 대책은 부족한 실정이다. 이에 따라 진동을 저감하기 위한 방진대책은 추가로 연구될 필요가 있다. 본 연구에서는 주행로의 진동 저감을 위한 구조를 선정하기 위해 유한요소해석을 활용하여 진동 특성 해석 기법 및 모델을 구축하고, 진동저감 효과가 우수한 주행로 구조를 제안한다. 주행로 구조는 기존 콘크리트 주행로, 단순 방진재 주행로 및 철판방진재 주행로가 있으며 실제 운행 조건을 고려한 구조 및 진동 해석을 수행한다. Rubber wheeled light rail vehicle is a railway system with low cost and mesoscale transport capacity. However, the research for vibration isolator way is needed because of vibration generated by running. In this study, We developed a vibration characteristic analysis method and model of a runway using finite element analysis. And then, We proposed the runway with excellent vibration isolator effect. There are the variable type of the runway structures including concrete runway, rubber and steel-rubber vibration isolator runway. The vibration analysis analyzed vibration acceleration results based on actual driving conditions. As a result, the steel-rubber vibration isolator runway model is decreased by 86%
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학교와 산업체간 지식 / 기술 확산 공유를 위한 산학협력 정책에 관한 연구
김재식(Jae Sik Kim),정철영(Chyul Young Jyung),최홍영(Hong Young Choi),나승일(Seung Il Na),김진모(Jin Mo Kim) 한국직업교육학회 1999 職業 敎育 硏究 Vol.18 No.1
The purpose of this study was to develop the policy for cooperation between education and industry in order to promote diffusing and sharing of their knowledge and skills. This study was conducted by the review of literature, case study, field visit, survey, interview, and consultation with experts. The major ways of cooperation between education and industry examined in this study were the school-based enterprise(SBE), business incubation center(BIC), and research parks(RP), including the industrial park, science park, and technology park. The authors analyzed the SBE, BIC, RP cases in foreign and domestic countries in terms of their educational benefits, implications and problems. The educational benefits included in applying and extending knowledge acquired in the classroom, solving problems in the context of real life, working in teams, producing tangible economic rewards and positive social outcomes. In addition, there were some difficulties and dilemmas encountered by these cases. Based upon the findings, the authors proposed the feasible model, suggested the new directions, and developed some policy for each way of cooperation between education and industry to promote diffusing and sharing their knowledge and skills.
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SnO 첨가에 따른 Ti-Te LTCC 재료의 소결 특성
김재식(Jae-Sik Kim),최의선(Eui-Sun Choi),류기원(Ki-Won Ryu),이영희(Young-Hie Lee) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
In this study, low temperature sintering property of the 06TiTe₃O?-04MgTiO₃ ceramics with sintering adds were investigated for LTCC application which enable to cofiring with Ag electrode TiTe₃O? mixed with MgTiO₃ to improve the temperature property. In the X-ray diffraction patterns, the columbite structure of TiTe₃O? phase and ilmenite structure of MgTiO₃ phase were coexisted in all specimens. In the case of SnO addition, the bulk density and dielectric constant were increased but quality factor was decreased with amount of SnO additions. The TCRF of the 0.6TiTe₃O?-0.4MgTiO₃+xwt%SnO ceramics were shifted to negative direction. The dielectric constant, quality factor and TCRF of the 0.6TiTe₃O?-0.4MgTiO₃ ceramics with 2.5wt% addition of SnO ereinis at 830℃ for 1hr were 29.86, 35,800 ㎓, -0.58 ppm/℃, respectively.
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