안구세안액의 사용 실태 및 이의 반복사용에 따른 투명소프트렌즈의 파라미터 변화

최현동(Hyun Dong Choi),김유정(Yoo Jung Kim),최수연(Suyeon Choi),신장철(Jang Cheol Shin),박미정(Mijung Park),김소라(So Ra Kim) 한국안광학회 2018 한국안광학회지 Vol.23 No.2

태권도시범 경기의 우수선수와 비 우수선수의 심리기술 비교

최현동 ( Hyun-dong Choi ),류호상 ( Ho-sang Yoo ) 대한무도학회 2021 대한무도학회지 Vol.23 No.2

본 연구의 목적은 태권도시범 경기의 우수선수와 비 우수선수 간 심리기술의 차이를 알아보는 데 있었다. 연구의 대상은 S광역시에 소재한 대학교와 성인 태권도 시범단 선수들로서 편의표집을 통해 총 150명의 설문지가 수집되었다. 자료분석을 위해 SPSS 22.0 프로그램으로 t-test를 실시하여 다음과 같은 결론을 얻었다. 첫째, 국가대표 경험이 있는 선수는 집중력, 자신감, 심상, 목표설정, 의지력이 높았고, 국가대표 경험이 없는 선수는 불안조절이 높았다. 둘째, 개인전 수상경력이 있는 선수는 자신감, 팀조화, 목표설정이 높았고, 개인전 수상경력이 없는 선수는 불안조절이 높았다. 셋째, 단체전 수상경력이 있는 선수는 집중력, 자신감, 팀조화, 심상, 목표설정, 의지력이 높았고, 단체전 수상경력이 없는 선수는 불안조절이 높았다. 본 연구결과를 종합해 볼 때 태권도시범 경기의 우수선수는 비 우수선수에 비해 불안조절을 제외한 전반적인 심리기술에서 우수한 것으로 나타났다. 후속 연구에서는 우수와 비우수선수 간의 심리기술 차이를 보다 심층적으로 분석할 수 있는 질적 접근의 필요성이 제기되었다. The purpose of this study is to examine the difference in psychological skills between elite athletes and non-elite athletes in Taekwondo demonstration sport. Using the convenience sampling, a total of 150 questionnaires were collected from college and adult Taekwondo demonstration teams located in a metropolitan city. For data analysis, t-test was conducted with the SPSS 22.0 program and the following conclusions were obtained. First, athletes with national team experience had high concentration, confidence, image, goal setting, and willpower, while athletes without national team experience had high anxiety control. Second, athletes with individual awards had high confidence, team harmony, and goal setting, while athletes without individual awards had high anxiety control. Third, athletes who have won team competitions have high concentration, confidence, team harmony, image, goal setting, and willpower, while those who do not have team competition awards have high anxiety control. In summarizing the results of this study, it was found that the elite athletes in the Taekwondo demonstration sport were superior to the non-elite athletes in overall psychological skills excluding anxiety control. In a follow-up study, the need for a qualitative approach was raised to analyze the difference in psychological skills between elite and non-elite athletes in more depth.

과학 교과서의 표를 해석하는 초등교사들의 안구 운동 추적

최현동 ( Hyun Dong Choi ),신동훈 ( Dong Hoon Shin ) 한국초등과학교육학회 2012 초등과학교육 Vol.31 No.3

The main purpose of this study was to examine elementary teachers`` visual attention that appears in science textbook tables. This paper proposed that teachers`` cognitive effectiveness can be different by the presence or absence of the title of tables. The eye fixation data of participants are collected by the eye tracker apparatus. Participants in this study were 10 elementary school teachers and the table on the 2007 revised science textbooks were selected as experimental stimuli, Information about eye-fixations are recorded when subjects are given 4 tables by eye tracker. Eye-fixation time as well as the ratio and the number of fixation can be obtained by using the eye tracker but also we can acquire a significant conclusion through these outcomes. As the result of the experiment, it took less time to interpret in the presence of the title than in the absence of it. However, this result is only effective only for the interpretation of simple stimulus; the presence of title does not influence on fixation time in the analysis of complicated stimulation. This study showed that it is better to insult the title in the tables because it helps teachers to recognize contents of the tables effectively.

측정과제에서 학습부진아와 학습우수아의 안구운동 비교

최현동 ( Hyun Dong Choi ),신원섭 ( Won Sub Shin ),신동훈 ( Dong Hoon Shin ) 한국초등과학교육학회 2014 초등과학교육 Vol.33 No.1

The purpose of this study was to analyze the difference between eye movements according to science achievement of elementary school students on measuring tasks. Science achievement was graded by the results of Korea national achievement test conducted in 2012. As an assessment tool to check measuring task, two measuring measure problems from TSPS(Test of Science Process Skill; developed in 1994) which were suitable for eye tracking system were adopted. The subjects of this study were 3 underachievers and 3 overachievers from 6th grade who agreed to participate in the research. SMI was used to collect EMD (eye movement data). Experiment 3.2 and BeGaze 3.2 programs were used to plan experiment and analyze EMD. As a result, eye movements of participants in measuring task did not show the path to the common gaze by groups. To solve the problem of using specific measuring strategies related to the correct answer. Underachiever who failed in measuring tasks don`t have enough measurement capabilities and lack eye movement through the area of interest for cognitive thinking. These results show that elementary school science curriculum dealing with measuring have to reflect a lot of step-by-step learning requires.

연구논문 : 초등과학영재와 일반 아동의 분류 과정에서 나타나는 안구 운동 패턴의 차이

최현동 ( Hyun Dong Choi ),신원섭 ( Won Sub Shin ),신동훈 ( Dong Hoon Shin ) 한국초등과학교육학회 2012 초등과학교육 Vol.31 No.4

The purpose of this study was to identify the differences in eye movement pattern shown in classification activities between the gifted and regular students in elementary schools. The subjects for the research consisted of five gifted students in the special education center for the gifted at Seoul National University of Education and five students at D regular elementary schools. SMI (Senso Motoric Instruments)` iView XTM RED 120 Hz was used in order to collect eye movement data. Results were as follows. There were difference patterns between the gifted and the regular student in question identification, attribute observation, and criteria generation process. Gifted students minimized unnecessary cognitive overload and took advantage of cognitive economic efficiency. Regular students have a lot of cognitive burden because they did not grasp the essential information.

초등학교 3학년의 분류 전략에 대한 미시발생적 분석

최현동 ( Hyun Dong Choi ),권치순 ( Soon Kwon Ch ) 서울敎育大學校 初等敎育硏究所 2011 한국초등교육 Vol.22 No.3

초등학교 3학년 학생들을 대상으로 총 6차례에 걸쳐 분류의 능력 수준에 관하여 조사하였다. 조사 결과 초등학교 3학년 학생들은 구체적 분류 전략과 정교한 분류 전략을 발견하지 못한 것으로 밝혀졌다. 학생들은 분류 전략 변화율이 안정적이거나 상승과 퇴보를 반복하는 경우가 많은것으로 나타났다. 또한 과제 요인에서 구체적 분류 전략과 정교한 분류 전략을 찾아 활용하는데 영향을 미치지 못하고 과제 간 전이효과가 거의 없었다. 그러나 초등학교 3학년 학생들은 회기가지 날수록 기존에 가지고 있던 분류 전략을 활용하여 더 많이 분류하였다. 즉, 분류의 탐구능력에서 질적인 향상은 거의 나타나지 않았으나 양적인 발전이 있는 것으로 파악되었다. 이는 초등학교 3학년 학생들은 분류 대상의 속성들을 인과적으로 연결할 수 없었기 때문에 질적인 분류 전략의 향상이 나타나지 못한 것으로 사료된다. Following a microgenetic design, this study was analysed the characteristic and the change of classification strategy that appear in third-grade elementary students` classification activity. The 4tasks were developed for classification activity; a shell as a familiar real things, an animal fossil as a unfamiliar real things, a snow flake as a familiar picture cards and galaxy as a unfamiliar picture card. Achieved study to 10 students of 3 grade in D elementary School, Seoul. Data were collected by interview with subjects, subject`s classification schema, investigator`s observation of subject`s activity, and videotaped that record subject`s subject classification process over an extended period of 6 times. Result proved in this study is as following. They were not found a concrete classification strategy F and a detailed classification strategy X3 until total 6 times of data collection procedures were finished. Task factors had not a effect on the classification strategies and transition effect between tasks was not identified in the classification activities of the students. However, as the procedures were repeating, the students became to qualitatively classified the tasks well by using existing classification strategies. Thus teachers should teach students to select the first classification strategy effectively showing characteristics of classification objects and have a classification strategy to find cause and effect relationship between a main class and a sub class.

초등학생 분류능력 발달의 경향성

최현동 ( Hyun Dong Choi ),양일호 ( Il Ho Yang ),권치순 ( Chi Soon Kwon ) 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.3

The purpose of this study was to investigate elementary school pupil`s classification ability that appears in classification activity. For this study, we developed 2 suitable tools in classification activity achievement. One is artificial stimulus card that comes into view clearly. The other is natural stimulus card that does not come into view well. The test was administrated to 376 pupils of 2, 4, and 6 grade in D elementary School in Yeongdeungpo-gu, Seoul. The result proved in this study was as following. First, elementary school pupil`s classification ability showed the developmental change as the grade level rises. Second, there was no statistical difference between boys and girls. Third, there was high correlation between sort artificial category and natural category in their ability. Fourth, classification achievement rate of constant level by grade was seen regardless of the items. The findings above gives following guidance in science classification learning. First, if teacher understands the development of students` classification ability, more effective classification guidance is available. Second, to cultivate students` classification ability, we should devise and apply program depending on their classification ability by grade.

태양광시스템 표준화 및 인증 최신동향

신정현(Jeong-Hyun Shin),최현동(Hyun-Dong Choi),김승주(Seung-Joo Kim),조성대(Sung-Dae Cho),황수현(Soohyun Hwang),전무이(Moo-Ei Jeon),서창균(Changkyun Seo) 한국태양에너지학회 2022 한국태양에너지학회 학술대회논문집 Vol.2022 No.10

AI 기술을 적용한 고성능 모아레 패턴 방식 3D 카메라 시스템 개발

하민호(Min-Ho Ha),최현동(Hyun-Dong Choi),윤성철(Sung-Chul Yun),박태형(Tae-Hyoung Park) 대한전기학회 2023 정보 및 제어 심포지엄 논문집 Vol.2023 No.10

연구논문 : 초등 예비교사의 실험 기구 조작 능력에 대한 연구

이소리 ( So Ree Lee ),최현동 ( Hyun Dong Choi ),임재근 ( Jae Keun Lim ),신세영 ( Se Young Shin ),양일호 ( Il Ho Yang ) 경북대학교 과학교육연구소 2011 科學敎育硏究誌 Vol.35 No.1

이 연구는 초등 예비교사들의 실험 수행 과정에서 나타나는 실험 기구 조작 능력을 알아보기 위해서 초등 예비교사의 실험 수행 과정을 관찰, 분석하였다. 연구를 위하여 중소도시 소재 H대학교 초등교육과 학생 24명을 연구 대상자로 선정하였으며 2007 개정과학과 교육과정에 근거하여 개발된 초등학교 3-6학년 과학 교과서를 분석하여 실험 도구를 선정하였다. 선정된 실험 기구는 현미경, 프레파라트 제작, 스포이트, 알코올램프이다. 또한 실제 실험 수행 과정에서 나타나는 실험 기구 조작 능력을 알아보기 위하여 실험 과제를 선정하였으며 실험 기구의 조작 능력을 평가하기 위한 평가 관점을 개발하였다. 3명의 연구 대상자가 각자 독립된 공간에서 동시에 실험 과제를 수행하였고 이 때 3명의 공동 연구자가 각 연구 대상자의 실험 과제 수행 과정을 관찰하고 실험 기구 조작 능력 평가 관점표에 제시된 각 관점의 조작 여부를 O, X로 기록하였다. 연구 결과, 초등 예비 교사들의 알코올램프, 스포이트, 현미경, 프레파라트 제작 능력이 낮다는 것을 알 수 있었다. 특히, 알코올램프는 스치듯 불 붙이기와 불꽃에 따라 삼발이의 높이를 조절하는 조작 기능이 매우 낮았으며 스포이트는 바르게 잡기를 제대로 수행하지 못하였다. 프레파라트는 제작 시 핀셋 등의 기구 대신 손을 많이 사용하였고 물방울 떨어뜨리기, 거름종이로 물기 닦아내기를 거의 수행하지 않았다. 또한 현미경은 각 과정의 사용법을 정확하게 알지 못했고 초점을 제대로 맞추지 못해 관찰 대상을 관찰하지 못하는 경우도 많이 있었다. 초등 예비교사들의 실험 기구 조작 능력 향상을 위해서 초등 교사 양성 과정에서 초등 예비교사들이 개별적으로 실험 기구를 조작해 볼 수 있는 기회를 충분히 가져야 하며, 이 과정에서 실험 기구의 명칭과 용도, 실험 기구를 올바르게 사용하는 방법, 사용할 때의 유의점, 실험에서 이 실험 기구를 사용하는 이유 등 실험 기구의 가장 기초적이고 기본적인 내용에 대한 지도가 이루어져야 할 것이다. The purpose of this study is to investigate manual skills of experimental apparatuses of pre-service elementary school teachers by examining and analyzing the process of experiments conducted by pre-teachers. For this study, 24 pre-service elementary school teachers were selected as the subjects and 4 experimental apparatuses were chosen through analyzing science textbooks from 3rd grade to 6th grade in elementary school. The selected experimental apparatuses were alcohol burner, dropper, microscope, instruments for making a prepared specimen. In addition, a task was carefully chosen to conduct an investigation in real settings and a series of evaluation standards was developed. While 3 subjects conducted experiments in separated and independent space at the same time, 3 collaborators observed the experiment process and recorded whether the subject met the evaluation standards or not, using O, X. The study suggests that pre-service elementary school teachers` manual skills of experimental apparatuses were under far below our projections. Particularly, in case of alcohol burner, the subjects showed lower ability to properly light the burners-which is to brush through the lampwick with fire-and to adjust the height of tripods according to the flame. Also, when it comes to dropper, they were not held the way they were supposed to be. In addition, when designing prepared specimen, the subjects used their hands instead of tweezers and often skipped the process of dripping water drop and wiping water with an oilpaper. Moreover, they did not know how to use a microscope properly so there were many times that they could not focus a microscope, failing to observe the objects. Educational implications are discussed.