한국부식학회

김광범 한국공학기술학회 1996 공학교육동향 Vol.2 No.4

Low-crystallinity Carbonaceous Negative Electrode Material for High Capacity Hybrid Lithium-ion Capacitor

김광범 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0

To increase the energy density of electric double-layer capacitors, while keeping a long cycle-life and a high rate capability, lithium-ion capacitors (LICs) using different type of cathode and anode are actively investigated. Especially, carbon have been highlighted as promising negative electrode materials for LICs because of low operating voltage and stable electrochemical behavior. However, reported carbon materials for LICs still suffer from relatively poor rate capabilities and cyclabilities. Herein, to improve electrochemical performances of LICs, we developed soft carbon/CNT composites by ball milling with soft carbon and CNTs. During the ball milling, graphene layers on carbon surfaces are stripped with defect formation. And, CNT improved electrical conductivity of soft carbon, and it could improve high rate capability. The composites showed superior rate capability and cyclability as anode materials for LICs. More details will be discussed in the meeting.

무용전공 학생들의 참여동기 질문지 개발

김광범,권은주 한양대학교 우리춤연구소 2008 우리춤과 과학기술 Vol.4 No.1

무용 전공학생들의 참여동기 질문지가 즐거움요인―9문항, 무동기요인―6 문항, 장래-자기개발요인―5문항, 권유-내적규제요인―4문항, 신체조형요인 3문항, 공연요인―3문항, 심리요인 3문항, 총 33문항으로 개발되었으며, 무용 전공학생들의 참여동기 하위요인들은 즐거움과 공연, 심리, 장래자기개발, 권유-내적규제, 신체조형 그리고 무동기요인으로 나타났는데, 즐거움과 장래-자기개발, 권유-내적규제, 신체조형 그리고 무동기요인의 경우는 신체의 움직임, 즉 운동을 다루는 체육이나 스포츠 장면에서의 참여 동기와 유사한 결과가 나타났으나 공연이나 심리적요인의 경우에서는 무용만의 고유하고 독특한 요인으로 나타나 차후, 무용장면에서의 동기에 대한 연구는 체육이나 스포츠장면과 변별력을 두고 연구해야 할 필요성이 있다. 그리고 본 연구에서 무용 전공학생들의 참여동기 비교에서 나타났듯이 중학교 무용 전공학생들의 경우에서는 즐거움을 강조하는 동기유발로 강화되어야 할 것이며, 고등학교와 대학교로 올라갈수록 신체조형요인과 심리적요인, 장래-내적규제요인을 강화시키는 동기유발이 필요하며, 무용 전공학생들의 동기를 감소시키는 무동기요인의 대처 방안에 대한 지속적인 연구가 이루어져야 할 것이라고 사료된다. This study was intended to explore the concept of the participatory motive shown in the training and performance of the students majoring in dance proper to the dance environment. For this purpose, it attempted to develop the questionnaire capable of measuring the participatory motive based on its concept and identify the level of dance majors' participatory motive based on the developed questionnaire on the participatory motive. 1. Exploration for the concept of the participatory motive in dance A total of 923 raw data on the concept of the participatory motive perceived by the students majoring in dance were obtained, and an attempt was made to classify them into the general domain, the detailed domain and the sub-domain through their deductive analysis. As a result, they were classified into three general domains(internal motive, external motive and no motive), six detailed domains(enjoyment, psychology, future self-development, physical formation, recommendation-internal control and no motive). 2. Production of the question item on the participatory motive An attempt was made to classified the raw data on the concept of the participatory motive of students majoring in dance. Then the question items were made to measure their participatory motive based on the sentences of the raw data expressing the concept of the motive to participate in the detailed domain. The number of question items by detailed domain was 5 ~ 13 items, and the factors in each detailed domain included a total of 44 items such as 13 items on enjoyment, 5 items on psychology, 8 items on future(self-development), 5 items on physical formation, 5 items on recommendation(inner control), 8 items on no motive. 3. Analysis of the items on the participatory motive An examination of the mean and standard deviation of each item showed that there was no item in which the extreme value(mean: over 4.5 and SD: below 1.0) in every item. And it was found that there were no items that had more than ±2.0 of skewness and kurtosis. And it was found that there was no items that had over 50% of the response ratio of each item but all items were appropriate. 4. Analysis of the reliability on the item of measurement on the participatory motive An attempt was made to conduct the reliability analysis on each factor for the items tested through item analysis. As a result, the Cronbach's alpha of two items on the enjoyment factor and the future factor(self-development factor), one item on the recommendation(internal control factor) and no-motive factors and the physical formation factor were found to be higher than the total value three times and twice, respectively when they were excluded. So they ware judged to be inappropriate and excluded. 5. Exploratory factor analysis of the measurement items of the participatory motive Four inappropriate items were excluded through the 1st exploratory factor analysis and then the 2nd exploratory factor analysis was conducted. As a result, the number of factors was found to seven, and it was found that the value of factor loading was proper in the items of the sub-domain on seven factors excluded in totality and that there were items that explained to the other items in common. 6. Designation and reliability of the extracted factor of the construct of the participatory motive Each items were designated by analyzing the sub-domains of the factors of the construct of the participatory motive through item analysis, reliability analysis and exploratory factor analysis. The first factor was designated as the enjoyment factor, the second as the no-motive factor, the third as the future - self-development factor, the fourth as the recommendation -inner control factor, the fifth as the physical formation factor, the six as the performance factor and the seventh as the psychological factor.

Li₄Ti₅O₁₂/graphene composite as anode materials for hybrid capacitor

김광범,정준희 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.0

[특집] 전기자동차용 이차전지 전원

김광범 한국자동차공학회 1998 오토저널 Vol.20 No.3

Nanoperforated Graphene and Microspherical Graphene Assembly for Energy Storage Devices

김광범,김영환,최연준,김현경 한국표면공학회 2023 한국표면공학회 학술발표회 초록집 Vol.2023 No.5

주요기사 AEESEAP Conference 2000, 6th Triennial Conference 참관기

김광범 한국공학교육학회 2000 Ingenium(人材니움) Vol.7 No.4

Reduced Graphene Oxide-based Materials for Electrochemical Capacitor and Battery Applications

김광범 한국고분자학회 2013 한국고분자학회 학술대회 연구논문 초록집 Vol.2013 No.4

전기화학적으로 형성된 알파 상 니켈 수산화물의 층간 거리에 미치는 음이온의 영향 연구

김광범,배상원,이재성,남경완,Kim, Gwang-Beom,Ganesh Kumar, V.,Bae, Sang-Won,Lee, Jae-Seong 대한화학회 2006 대한화학회지 Vol.50 No.2

이 연구에서는 고등학교 화학II 교과서의 ‘용액' 단원에 대한 내용을 입자 수준으로 표현한 컴퓨터 보조 수업자료를 개발하고 그 효과를 고등학교 1학년과 2학년 학생들에게 적용하여 그 효과를 알아보았다. 개발된 내용은 교과서에서 제시한 ‘용액' 단원의 주요 내용으로 용해, 증기압, 끓는점과 어는점의 변화, 삼투현상 등으로 구성되었다. 이 연구에서는 애니메이션과 시뮬레이션을 이용하여 자료를 개발하였다. 이 자료에서는 특히 용액에서 일어나는 현상에 대한 주요 개념을 입자 관점에서 이해할 수 있도록 중점을 두었 다. 용액의 여러 현상들을 용액의 총괄성으로 단순화하지 않고, 용매와 용질 사이의 인력 개념으로 설명하였다. 용액과 관련된 자료의 제작은 플래시 5.0과 플래시 6.0의 Action Script를 이용하였다. 개발한 자료를 고등학교 학생들에게 투입한 결과, 통계적으로 유의미하게 개념 향상을 나타내었으며 특히 고등학교 1학년은 과도기와 형식적 조작기 학생들에게, 그리고 고등학교 2학년의 경우에는 형식적 조작기 학생들과 자연계열 학생들에게서 그 효과가 크게 나타났다. In this study computer assisted instruction materials for the ‘Solution' chapter in high school chemistry II textbook were developed based on a view of particle and analyze the effect of the materials on 10th and 11th high school students. The contents of developed materials are dissolution, vapor pressure, the change of boiling point and freezing point, osmosis, and so on which are the major contents of Solution chapter in high school chemistry II textbook. Materials were developed with using animation and simulation for students understanding of the phenomena with a particle view point. Many phenomena in a solution were not simplified by colligative property of solution, but tried to explain by the concept of attraction between solute and solvent molecules. This computer assisted learning materials were developed using Flash 5.0 and Flash 6.0 Action Script. Educational effects of the materials on 10th and 11th grade students represented statistically meaningful increase of concept understanding. Especially the materials were effective to the transition stage or formal stage students in 10th grade and formal stage or the natural science major students in 11th grade.

Supercapacitor용 금속산화물 전구 소재

김광범,김일환,남경완,김광헌 한국표면공학회 2004 한국표면공학회 학술발표회 초록집 Vol.2004 No.-