유동장과 비유동장에서 GDI분무의 거동 특성

김한재(Han-jae Kim),류경훈(Kyeong-hun Ryu),최동석(Dong-seok Choi),김덕줄(Duck-jool Kim) 한국자동차공학회 2000 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-

Behaviors of GDI spray for flow and non-flow field were studied using LIEF and PDPA system. Injector has cone spray angle and spray has hollow cone structure. The exciplex system of fluorobenzene and DEMA in a non-fluorescing base fuel of hexane was employed. Droplet size and velocity were also measured by PDPA. From spray images ,sprays could be divided as two regions: cone and mixing region. Large droplets over 40㎛ were distributed outside spray main stream and many fine droplets were distributed inside the spray and vortex region. In engine spray has smaller penetration than chamber while dispersions were almost same at both cases. At mixing region, area ratios of high intensity region in engine were larger and increased rapidly after about 1.0ms after injection.<br/>

[가솔린엔진부문] 직접 분사식 가솔린 기관의 실린더 내 분무의 거동

김한재(Han-Jae Kim),류경훈(Kyeong-Hun Ryun),최동석(Dong-Seok Choi),차건종(m Keun-Jong Cha),김덕줄(Duck-Jool Kim) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

To achieve the requirement for high fuel economy and low emissions, the research of GDI engines is recently very brisk in the whole world. This study was performed to investigate the spray characteristics within cylinder of optically accessible direct-injected GOI engine. For this study, the conventional MPI, OOHC engine is modified into optically accessible GOI engine. The fluorescence images were captured using exciplex fluorescence method in a motoring engine. Four injection timing were set, namely, A TOC 90 °, BTOC 50 °and BTOC 70 °. The spray structure and penetration in optically accesible engine was influenced by tumble flow in cylinder.

영ㆍ유아를 위한 영어 에듀테인먼트 애니메이션 고찰

김한재(Kim, Han-jae) 한국만화애니메이션학회 2011 만화애니메이션연구 Vol.- No.24

오늘날의 세계화 도래와 함께 국제적, 사회적으로 영어의 필요성은 더욱 중요해지고 있으며 이를 체감하며 자란 7, 80년대생이 자녀를 가지기 시작하면서 영어 조기교육 열풍이 점점 확산 되고 있다. 이는 최근 자녀수가 감소함에 따라 자녀의 환경과 교육에 아낌없이 투자하려는 심리와 맞물려 부모들의 영어조기교육에 대한 기대가 더욱 높아졌다. 이러한 사회적인 필요에 의해 초등학교 교육과정까지 영어교육을 도입한 공교육을 선두로 조기에 영어교육을 시작하는 것이 효율적이라는 학자들의 주장이 힘을 입어 그 대상을 영ㆍ유아까지 포함하게 된 것이다. 이처럼 어린 연령대의 아이들을 위한 영어조기교육의 경우, 긍정적인 결과를 가지고 올 수도 있지만, 부정적인 영향을 가지고 올 수 있어도 체계적인 연구를 통한 교육지침의 설립이 시급하다. 본 논문에서는 언어습득의 이론적 배경들을 설명하여 영ㆍ유아의 조기언어교육 타당성을 제시하고 에듀테인먼트 애니메이션의 교육적인 효과를 알아보고자 한다. 이를 위해 현재 유통되고 있는 2 ~ 7세의 유아들을 대상으로 하는 DVD 타이틀 가운데 이미 베스트셀러로 인정받고 있는 영어교육용 에듀테인먼트 애니메이션들을 유형별로 묶어 비교해보았다. 더 나아가 여러 유형 중 참여 유도형 에듀테인먼트 애니메이션의 캐릭터 분석 및 진행형식, 효과적인 학습을 위해 선택된 스토리텔링 구성 등을 분석하였다. 본 연구의 목적은 유아의 영어교육용 엔터테인먼트 애니메이션에는 어떤 유형이 있는지 비교해보고 분석하여 언어교육을 목적으로 하는 타이틀을 유아들의 수준과 연령에 맞게 제작하기 위해서는 어떠한 장치가 있어야 하는지에 대한 기본적인 틀을 제시하는 데 있다. As importance of English has been getting more important with globalization, English education for preschoolers has drawn more attention from parents who were born in 1970’s and 1980’s. Demands for English education are very intense mainly because parent generation has experienced importance of English through own career and they have only one or two children, resulting parents’ willingness to invest more on children’s education. In order to response high demands for English education, Korean public education system has introduced more intense English education curriculum for younger children and put more weights on English education even for preschoolers. Even though there are numbers of studies to support effectiveness of English education for pre-school age children, adaption of English education for them without through preparation may cause unwanted results on children’s learning experience. Hence, it is imperative to develop guideline for English education targeting pre-school age children based on through studies. The purpose of this paper is to justify English education for preschoolers based on various theories for language acquisition, research effectiveness of edutainment animation for English education, and provide basic guideline to develop edutainment animation in the future. To achieve this goal, this study visits how each theory emphasizes importance of language education in preschool age children and analyzes well-known edutainment animation titles by comparing them per characteristics. Furthermore, specifically from participation-inducing animation for education, each component, such as characters, story structure, & story telling methods, has been discussed. Based on the findings from this paper, basic guidelines to develop edutainment animation are developed by suggesting teaching tools for English education for preschoolers.

NPU에 의한 선형매칭 음성인식에 관한 연구

김한재(Han Jae Kim),김승겸(Seung Kyum Kim),이기영(Ki Young Lee),최갑석(Kap Seok Choi) 한국통신학회 1992 한국통신학회 학술대회논문집 Vol.1992 No.7

유아-아동 대상 미술치료를 위한 서비스 디자인 가이드라인에 관한 연구

최문정(Moon Jung Choi),김한재(Han Jae Kim),신승섭(Seung Seob Shin),권지은(Ji Eun Kwon) 한국디자인문화학회 2015 한국디자인문화학회지 Vol.21 No.2

최근 심리치료는 다양한 미디어와 콘텐츠로 접근이되고 있는 추세이다. 특히 미술치료는 미술, 음악, 무용, 원예, 연극, 명상 등의 모든 분야가 어우러져있어 다양한 형태의 전문적 서비스 영역으로 보다 보편화되어 있는데, 심리치료를 필요로 하는 이용자가 증가하고 있는 현 시점에 그에 따른 각종 심리치료의 특수성이 고려된 내담자의 시공간적 접근의 서비스디자인의 필요성이 부각되고 있다. 심리치료 서비스 목적의 특이점은 대상과 기관, 치료사의 신뢰적 관계 구축과 대상의 정서적 어려움을 빠르고 정확하게 파악하고 전문적 시스템으로 치료목적의 효과를 증대시키는데 있는데 이를 위한 서비스 디자인의 구조와 모델이 부족한 실정이다. 본 연구는 미술치료 기관인 ``H`` 연구소를 중심으로 운영 사례 분석을 통해 미술치료 서비스의 프로세스 정의 및 보완점을 제시하며, 미술치료의 서비스디자인 제공에 있어 필요한 가이드라인을 제안하고자 하였다. 이를 위하여 첫째, 문헌조사를 통하여 미술치료와 서비스의 개념을 정리하고 둘째, 현재 운영되고 있는 해외 기관과 국내 연구소의 사례를 조사하여 실태파악을 하고 그 중, 미술치료 기관인 ‘H’ 연구소의 서비스 현황을 심층조사한 후 셋째, ‘H`` 연구소의 서비스를 분석하고 보완하여 체계적인 블루프린트를 제시하였다. 마지막으로 서비스를 이용하는 대상 중 ‘부모’와 서비스 대상자인 ‘아동’으로 퍼소나를 정립하여 행태 모델을 제작하였다. 본 연구를 통해 대상, 기관, 치료사의 실제적 인터페이스와 안전한 상호작용을 중심으로 미술치료의 목적을 효과적으로 이루어낼 수 있는 구조와 체계를 도출하고 미술치료 과정의 전반적인 서비스 디자인을 제안하였다. 첫째, 미술치료 서비스디자인 프로세스 구조적, 시각적 가이드로 서비스의 효율적인 진행을 위한 기준을 제공하고 둘째, 서비스 블루프린트를 중심으로 퍼소나를 적용한 행동모델을 제시함으로서, 미술치료 서비스의 사용자의 모습을 명확하게 보여주어, 미술치료 서비스디자인에 대한 이해도를 높일 수 있을 것을 기대된다. Recently, psychological treatment has been become by many kinds of contents and media. Specially, art therapy including art, music, dance, gardening, play and other media has been built in professional service area. Therefore, it brings the needs to develop service design that related with touch point such as environment, time flow and therapist. The psychological treatments service which is special purpose of therapy makes credibility between target customer and therapist of institute. The most important things is precise understanding of target customer’s emotional problem in service of treatment. And then the professional service system needs to be built to heighten successful therapy. However, now, structure and model of service design are deficient in this area. The purpose of the paper is to define art therapy service and classify customer and develop service design model of art therapy for child to success the service through case study of art therapy center, ‘H Studio’. We would discuss guideline of art therapy service and consideration. For this research, first of all, we make sure the concepts of art therapy and relationship with service by searching of the relevant literature. Secondly, case investigation research of overseas agency and Korea studio than compare and analyze them. And, do an in-depth analysis of the art therapy center, ‘H Studio’ would be researched about current process and system of service by observation and interview. Thirdly, we analyze ‘H Studio’ and make blueprint as service design model. Finally, we create persona of main customers who are the ‘Parents’ and ‘Child’. The result of this article is suggestion of service design come up with an effective structure system to Art therapy service process from target customer and therapist of institute by real interface and safety interaction in art therapy. 1) to suggest standard blueprint for structure and visualization of art therapy service design to make expeditious progress, 2) to show user scenario clearly using persona models for art therapy service. Therefore, it is expected to understand art therapy service for child and help effective management and treatment.

빛 반사 검토를 위한 3D 렌더링 툴 연구 및 방법론 개발

조준영(Cho Jun Young),김한재(Kim Han Jae),백경국(Baek Kyung Kuk) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4

3D rendering tool is based in ray tracing theory. So it can be made use of investigating the phenomenon of a light reflex. But we have to prove it to be the same result with a real phenomenon before the use of it. In this study I will try to prove it and to research the methodology of 3D rendering tool.

Convenient Route to Core-modified Corroles by Acid-catalyzed Condensation of Furylpyrromethanes and Dipyrromethanes

이창희,조원섭,가재원,김한재,이필호,Lee, Chang Hui,Jo, Won Seop,Ga, Jae Won,Kim, Han Jae,Lee, Pil Ho Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.4

Corroles and oxacorroles were synthesized by acid-catalyzed, 2+2 condensation. The condensation afforded different corroles bearing core-heteroatoms at the predesignated locations. Regioselective a- a’ linkage be-tween pyrrole and furan or betwee n pyrrole and pyrrole was achieved by keeping the linking carbon at different position of starting dipyrromethanes. The condensation was only fruitful when furan-containing dipyrromethanes were condensed.

Triboelectric Nanogenerator (TENG)를 위한 Rutile TiO₂ 박막 성능 및 특성 평가

문지현(Ji-Hyeon Moon),김한재(Han-Jae Kim),김효배(Hyo-Bae Kim),안지훈(Ji-Hoon Ahn) 한국표면공학회 2021 한국표면공학회지 Vol.54 No.6

As energy harvesting technology becomes important in relation to environmental issues, piezoelectric materials that convert mechanical energy into electrical energy are attracting attention. However, PZT, a representative material for piezoelectricity, is becoming difficult to use due to the problem that its components can cause environmental pollution. For this reason, recent research suggests a triboelectric nanogenerator (TENG) that generates energy through the combined effect of triboelectricity and electric induction for alternative piezoelectric devices. In TENG, electrical power is determined by the dielectric constant, thickness, and grain generation of the charged material. Therefore, in this study, a Rutile phase TiO₂ thin film with high dielectric constant was formed using the spin-coating process and the effect of annealing was investigated. For electrical analysis, a TENG device was fabricated using PTFE as a material with an opposite charge, and electrical output according to film thickness and grain formation was comparatively analyzed.