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고홍규 ( Koh¸ Hongkyu ),박재용 ( Park¸ Jaeyong ),정동훈 ( Jung¸ Donghun ),장현진 ( Jang¸ Hyunjin ),김정임 ( Kim¸ Jeongim ),김현지 ( Kim¸ Hyunji ),채유정 ( Chae¸ Yoojeong ),한경은 ( Han¸ Kyungeun ) 서울교육대학교 초등교육연구원 2020 한국초등교육 Vol.31 No.4
본 연구는 미술 감상 교육을 기반으로 하여 과학, 사회(역사), 생활과학(실과) 등의 교과를 연계하는 융합교육 콘텐츠 개발을 목적으로 한다. 융합교육의 필요성과 중요성이 대두된 이래로 융합교육에 대한 많은 연구와 교육적 시도가 있었다. 하지만 우리 교육현장에서 대부분의 융합교육은 STEAM으로 대변되는 과학이나 수학 위주의 교육 프로그램이 주를 이루었다. 미술교과는 다양한 영역과 연계하여 학습될 수 있는 융합적 가능성이 많은 교과임에도 불구하고 그동안의 융합교육에서는 대개 그 융합적 가능성이 적절히 기능하지 못한 채 주변화 된 교과로 진행되는 경향이 있었다. 이러한 문제의식을 바탕으로 연구자는 미술교과, 그 중에서도 타 교과 영역과의 연계 가능성이 큰 미술 감상 영역을 중심으로 여러 교육 내용을 연계할 수 있는 융합적 교육 프로그램을 개발하여 시행하여 보고, 그 효과성을 검증하고자 하였다. 본 연구는 일련의 연구 과정의 첫 단계로서 융합교육 콘텐츠 개발을 목적으로 하였다. 개발된 교육 프로그램은 고구려 고분벽화 <무용총>, 신윤복의 <월하정인>, 김홍도의 <수운엽출>, 조선의 민화 <백동자도>, 레오나르도 다 빈치의 <최후의 만찬>, 한스 홀바인의 <대사들>, 요하네스 베르메르의 <사관과 웃고 있는 소녀>, 김환기의 <피난열차>, 가야 시대의 <오리모양 토기>, 그리고 조르주 쇠라의 <그랑자트 섬의 일요일 오후>의 총 10점의 미술 작품을 중심으로 초등학교 학생들의 학습 수준을 고려하여 과학, 사회(역사), 생활과학(실과) 등의 교과와 연계할 수 있는 내용들을 정리하여 제시하였다. 앞으로 후속 연구에서는 개발된 융합적 콘텐츠를 바탕으로, 이를 초등교육과정 및 현장에 부합하는 교수·학습과정안 및 교수 방법으로 개발하고자 한다. 또한 이를 실제 초등교육 현장에 적용하고 그 효과성을 검증이 이우러질 것이다. The purpose of this study is to develop and present a convergence education program that links subjects such as science, society (history), and life science (practical arts) based on art appreciation education. Since the necessity and importance of convergence education emerged, there have been many studies and educational attempts on convergence education. However, most of the convergence education in our educational field was mainly science or mathematics education programs represented by STEAM. Although art subjects have many fusion possibilities that can be learned in connection with various fields, in fusion education so far, the fusion possibilities tend to proceed to marginalized subjects without properly functioning. Based on this awareness of the problem, the researcher developed and implemented a convergent educational program that can link various educational contents centering on the art subject, especially the art appreciation area, which has a high possibility of linking with other subject areas, and reports its effectiveness. I tried to verify. This study aims to develop a convergence educationprogram as the first step in a series of research processes. Developed educational programs include Goguryeo tomb murals < Mudyong Chong >, Shin Yun-bok's < Wolha Jungin >, Kim Hong-do's < Sooun Yeopchul >, Joseon's folk painting < Baek Dongjado >, Leonardo da Vinci's < The Last Supper >, Hans Holbein's < The Ambassadors > >, Johannes Vermeer's < The Officer and the Laughing Girl >, Kim Whanki's < The Evacuation Train >, < Duck-shaped Pottery > from the Gaya Period, and Georges Seurat's < Sunday Afternoon on Granjat Island > As a result, contents that can be linked to subjects such as science, society (history), and life science (practical arts) are presented in consideration of the learning level of elementary school students. In the follow-up study, we will go further from this study and present more diverse educational contents based on art works, such as the programs developed in this study, and develop them as teaching/learning curriculum plans and teaching methods suitable for elementary school curriculum
Kwon, Sooncheol,Park, Jin Kuen,Kim, Jehan,Kim, Geunjin,Yu, Kilho,Lee, Jinho,Jo, Yong-Ryun,Kim, Bong-Joong,Kang, Hongkyu,Kim, Junghwan,Kim, Heejoo,Lee, Kwanghee The Royal Society of Chemistry 2015 Journal of Materials Chemistry A Vol.3 No.15
<P>Processing additives have been widely utilized for high-performance organic bulk-heterojunction (BHJ) photovoltaic devices. However, the role of processing additives remained unclear due to the limited information relying on the final BHJ film state rather than the intermediate film state during solvent evaporation. Here, by using<I>in situ</I>GIWAXS measurements on the intermediate BHJ film, we propose a possible phase separation mechanism in efficient BHJ solar cells consisting of a narrow band gap polymer (P1) and PC71BM<I>via</I>the use of 1-chloronaphthalene (1-CN) as a processing additive. We found that adding small amounts of an additive, 1-CN, with a high boiling point and a high PC71BM solubility can prolong the solvent evaporation time and dissolve many PC71BM molecules, promoting the strong P1 polymer:solvent and PC71BM:solvent interaction to produce pure domains of each component. Thus, the bi-continuous networks for both P1 and PC71BM and their enlarged interfacial area are well fabricated in the BHJ films, inducing balanced photo-charge carrier densities for the electrons and holes and improving the overall photovoltaic performance. Therefore, our findings elucidate the kinetic motions of two organic phases affected by the physical properties of the solvents in the process of film formation and establish criteria for BHJ systems.</P>
Hongkyu Kim,Yoonmo Sung,Chung Choo Chung 제어로봇시스템학회 2018 제어로봇시스템학회 국제학술대회 논문집 Vol.2018 No.10
This paper presents Proportional-Integral Feed Forward(PIFF) controller using Proximate In-phase Current Estimator(PIpCE) for current control of sawyer motor. For current control, Low Pass Filter(LPF) has been widely used to remove high-frequency noise from feedback current. But the current filtered by LPF has phase lag which generates current tracking error, and also it can cause position tracking error. PIpCE obtains both advantages removing highfrequency noise and reducing current tracking error. The proposed algorithm applied to sawyer motor was validated with simulation results.
Achieving long-term stable perovskite solar cells <i>via</i> ion neutralization
Back, Hyungcheol,Kim, Geunjin,Kim, Junghwan,Kong, Jaemin,Kim, Tae Kyun,Kang, Hongkyu,Kim, Heejoo,Lee, Jinho,Lee, Seongyu,Lee, Kwanghee Royal Society of Chemistry 2016 ENERGY AND ENVIRONMENTAL SCIENCE Vol.9 No.4
<P>Despite recent reports of high power conversion efficiency (PCE) values of over 20%, the instability of perovskite solar cells (PSCs) has been considered the most serious obstacle toward their commercialization. By rigorously exploring the self-degradation process of planar-type PSCs using typical metal electrodes (Ag or Al), we found that the corrosion of the metal electrodes by inherent ionic defects in the perovskite layers is a major origin of intrinsic device degradation even under inert conditions. In this work, we have developed a new concept of a chemical inhibition in PSCs using amine-mediated metal oxide systems and succeeded in chemically neutralizing mobile ionic defects through mutual ionic interaction. As a consequence, we realized planar-type PSCs with long-term stability that maintain nearly 80% of their initial PCEs even after 1 year (9000 h) of storage under nitrogen and 80% of their initial PCEs after 200 h in ambient conditions without any encapsulation.</P>
Optically transparent semiconducting polymer nanonetwork for flexible and transparent electronics
Yu, Kilho,Park, Byoungwook,Kim, Geunjin,Kim, Chang-Hyun,Park, Sungjun,Kim, Jehan,Jung, Suhyun,Jeong, Soyeong,Kwon, Sooncheol,Kang, Hongkyu,Kim, Junghwan,Yoon, Myung-Han,Lee, Kwanghee National Academy of Sciences 2016 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.113 No.50
<P>Simultaneously achieving high optical transparency and excellent charge mobility in semiconducting polymers has presented a challenge for the application of these materials in future 'flexible' and 'transparent' electronics (FTEs). Here, by blending only a small amount (similar to 15 wt %) of a diketopyrrolopyrrole-based semiconducting polymer (DPP2T) into an inert polystyrene (PS) matrix, we introduce a polymer blend system that demonstrates both high field-effect transistor (FET) mobility and excellent optical transparency that approaches 100%. We discover that in a PS matrix, DPP2T forms a web-like, continuously connected nanonet-work that spreads throughout the thin film and provides highly efficient 2D charge pathways through extended intrachain conjugation. The remarkable physical properties achieved using our approach enable us to develop prototype high-performance FTE devices, including colorless all-polymer FET arrays and fully transparent FET-integrated polymer light-emitting diodes.</P>