CuO 대신 Cu 미분말 치환이 NiCuZn Ferrite에 미치는 영향에 관한 연구

김재식(Jae Sik Kim),고재귀(Jae Gui Koh) 한국자기학회 2003 韓國磁氣學會誌 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.

변용된 생활도구의 해학(諧謔)

김재식(Jae SIK, Kim) 한국조형디자인학회 2005 조형디자인연구 Vol.8 No.2

The present study is a recollection of human relations in the past, taking note of contemporary social phenomena. Going against the advanced mechanical civilization, this study purposed to discover our changed looks by reflecting upon the culture of manual tools. Living tools in the past were neither precise nor solid due to lack of technologies but they were sufficiently helpful for human life. They were created and handled directly by human beings, so contained the warm breath of their masters. On the contrary, contemporary living tools are precise, handy and highly effective but because they are mass-produced they are not loved or valued. They are merely material tools without life. The task of the present study is to confront living tools in the past with those in the preset, to analyze meanings and phenomena coming from the confrontation, and to express them humorously. Arts are symbolical express ions of artist s' expenences and thoughts. The symbols are the language of images. Linguistic express ion is based on rhetoric. If art symbolizes a language, the basic of its expression methods is rhetorical methods. Accordingly, this study attempts analysis through rhetorical methods. Another task of the present study is humorous expression. Humor is one of representative Korean beauties, creating smile. In this study, the combination of several elements of smile is recognized as humor. It is because different elements of smile play basic roles in creating smile, they are identical by nature. Smile has the function of brightening and purifying the society . Humorous expression 10 this study, which is a catalyst inducing smile, is to make audience feel humorous smile. It is the core of this study to relieve contemporary people' s mental pain through smile evoked by meanings and humorous expressions coming form the comparison between traditional and contemporary living tools.

(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.

Development of the dielectric ceramics with low loss for microwave applications

김재식(Jae-Sik Kim),최의선(Eui-Sun Choi),류기원(Ki-Won Ryu),이영희(Young-Hie Lee) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.7(초록집)

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.

소결온도에 따른 Ba 페라이트의 마이크로파 특성

김재식(Jae-Sik Kim),김상우(Sang-Woo Kim),류기원(Ki-Won Ryu),배선기(Seon-Gi Bae),이영희(Young-Hie Lee) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11

The sintering behavior and high frequency properties of Ba-hexagonal ferrite were investigated. All samples of the Ba-hexagonal ferrite were prepared by the conventional mixed oxide method and sintered at 1150℃~1400℃. From the X-ray diffraction patterns of sintered Ba-hexagonal ferrite, the Ba₃Co₂Fe₂₄O₄₁ phase was represented as main phase in the almost sintering conditions. The bulk densities with sintering temperature and decreased at 1400℃. The bulk density of Ba₃Co₂Fe₂₄O₄₁ ceramics sintered at 1300℃ was 4.79 g/㎤. The permittivity (ε') of Ba₃Co₂Fe₂₄O₄₁ ceramics was increased and the permeability was decreased with sintering temperature, respectively. The permittivity and permeability of Ba₃Co₂Fe₂₄O₄₁ ceramics sintered at 1300℃ were 19.896 and 14.218 at 210 ㎒, respectively.

버코위츠(M. W. Berkowitz) 도덕 해부학의 도덕 교육적 함의

김재식 ( Jae Sik Kim ) 한국윤리교육학회 2016 윤리교육연구 Vol.0 No.39

본 연구의 목적은 버코위츠의 도덕 해부학과 도덕 교육적 접근을 고찰하고, 그의 관점에서 현행 초등 도덕과 교육에 주는 시사점을 찾아보는 것이다. 버코위츠는 도덕적 인간의 본성을 다차원적 -도덕적 행동, 도덕적 인격, 도덕적 가치, 도덕적 추론, 도덕적 정서, 도덕적 정체성, 메타 도덕적 특성 -으로 이해한다. 그리고 다차원적 도덕적 인간 본성을 바탕으로 포괄적 도덕 교육을 제시한다. 이러한 버코위츠의 도덕 교육적 관점이 현행 초등 도덕과 교육에 주는 시사점은 다음과 같다. 첫째는 도덕과 교육 목표와 관련하여, 총괄 목표에 명시된 ‘인격 형성’에 대한 구체적인 도덕적 자질을 다차원적인 도덕적 인간 본성으로 규정하는 보완적 진술을 통해 혹은 도덕과 총괄 목표에 대한 전면적인 수정 작업을 통해 보다 구체적인 도덕적 인간상을 먼저 설정하고, 그로부터 도덕교육적 전략을 연역해 낸다면 보다 구체적이고 체계적인 도덕과 교육에 대한 방향성을 제시할 수있을 것이다. 둘째는 도덕 교육적 전략과 관련하여, 학교 도덕 교육이 보다 효과적인 도덕 교육이되려면 기존의 분리적 접근이었던 공식적·비공식적 도덕 교육을 학교 차원의 도덕 교육에서 체계적으로 통합할 필요가 있다. The purpose of this study was to investigate the moral anatomy and moral education approach of Berkowitz and search for implications of the current elementary moral education from Berkowitz``s perspective. Berkowitz regards nature of moral person as multidimensional characteristics. The multidimensional characteristics of moral person are as follows: moral behavior, moral character, moral values, moral reason, moral emotion, moral identity, meta-moral characteristics. And Berkowitz presents a comprehensive moral education based on the moral anatomy. From Berkowitz``s perspective, the current elementary moral education canl be offered a lot of suggestions. First, with regard to the general goals of moral education, if once a expecting status of moral human is settled specifically through complementary statement describing a multidimensional moral human nature as a specific moral qualities of the ``character building`` specified in the general goals of moral education or full-scale modifications to the general goals of moral education and then the moral education strategy is deduced therefrom, the general goals of moral education will be able to present a more concrete and systematic orientation for moral education. Second, with regard to the moral educational strategy, in other to be more effective moral education in school, formal and informal moral education is approached separately needs to be systematically integrated in the moral education of school dimension.

전통 적(목)교육에 기초한 초등 도덕과 교육

김재식 ( Jae Sik Kim ) 한국초등도덕교육학회 2005 초등도덕교육 Vol.20 No.-

Skin Care Ship의 공간 디자인 경향 연구

김재식(Kim Jae-Sik) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The purpose of this study was to improve the interior quality of skin care shop which are applicable to the design process for interior design according to the color, materials, trends.<br/> The major results of this study are as follows<br/> 1. concept introduction as the Basic approach of theory which is necessary for study.<br/> 2. This study was trends of recently interior design which can be practically used in skin care shop.<br/> 3. The interior design trends are divided into 3 types, such as space, color, materials from the result of this study. It means that image is very important element in interior design process of skin care shop. Therefore it is helpful to plan the interior design according to the image type of interior trends for good interior design.

V. Manen의 교육학적 택트의 도덕 교육적 함의

김재식 ( Jae Sik Kim ) 한국초등도덕교육학회 2013 초등도덕교육 Vol.0 No.42