The Relationship between Elementary School Students' Perception, Fun, and Self‐Directed Learning of HAPKIDO TRAINING

Cheolki Hong,이재범,Jumyong Kim J-INSTITUTE 2020 International Journal of Martial Arts Vol.5 No.2

Purpose: The purpose of this study is to verify the structural relationship and influence relationship between participation perception, fun factors and self-directed learning attitude of elementary students through our tradi-tional martial art, Hapkido, and provide a theoretical background. Method: To analyze the relationship between elementary school students' perception, fun, and self-directed learning of Hapkido training, empirical analysis was conducted for a total of 352 questionnaires as final analysis data. Specifically, first, to investigate the structural relationship between each variable, the structural equation model was constructed, and the path coefficient of the variable and the fitness of the model were evaluated. Sec-ond, multiple regression analysis was conducted to analyze the effect of Hapkido training awareness and fun on self-directed learning, a dependent variable. All statistical levels were verified at p<.05. Results: First, Looking at the path coefficient analysis results of the research model, among the latent variables of the structural equation model, the perception variable and the fun variable of the path coefficient were 0.711(t=3.135, p<.001), and the fun factor variable and the self-directed learning attitude variable were 0.702(t=6.979, p<.001), confirming statistically significant results. Second, In addition, in the results of multiple regression analysis with fun as the independent variable and self-directed learning as the dependent variable, the function improvement factor, the free time factor, the explanation and demonstration factor, and the friend rela-tionship factor were found to be significant, but it was found that the factors of competition and emotional trans-formation had no statistical significance. Conclusion: These findings identify structural causal relationships between participation perception, fun fac-tors, and self-directed learning attitude in Hapkido training and suggest the influencing factors, and this study is meaningful in that it contributes to the improvement of the quality of elementary students' health education and provides a theoretical background required for the transition of learning.

레이저 감지기술을 이용한 열차접촉사고자 보호장치에 관한 기초연구

안철기(Cheolki Ahn),이병윤(Byoungyun Lee),김상겸(Sanggyum Kim) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Recently, the number of accident that a train collides with a rail trespasser are reported to be more than 200 per year in korea. This kind of accident results fatal wound and death. Because the train runs fast and has heavy weight, the driver can not stop it effectively when he finds a rail trespasser. The casualties of this kind of accidents are increasing especially in urban train. Thus many countries that have advanced railway system endeavor effort to reduce these casualties. In this paper, a rescue device is proposed that has automatic detection device using laser detection technology to find a rail trespasser and airbag system to reduce damage. This concept adopts the ideas of recent researches in the area of automotive engineering and robotics. An airbag system are reported to be somewhat effective against collision accident with pedestrian in the recent researches of auto safety. Many types of combination sensors using laser detection technology are reported in researches of unmanned ground vehicle for outdoor terrain. As detection device, the combination of three sensors, stereo camera, short range laser scanner, long range laser scanner, are used in the proposed approach. As feasibility study of this idea, a detection device and a miniature airbag system is established on a test bed.

센서 네트워크에서 효율적인 센서 배치 문제의 새로운 접근 방향

이철기(Cheolki Lee),이승학(Seunghak Lee),윤현수(Hyunsoo Yoon) 한국정보과학회 2007 한국정보과학회 학술발표논문집 Vol.34 No.1D

우리는 센서 영역에서 노드들을 효율적으로 배치하기 위한 새로운 관점의 문제를 제안하고자 한다. 기존 연구에서는 센서 영역에서 발생하는 이벤트를 잘 감지할 수 있도록 센서를 배치하기 위해서 임의의 지역에서의 센싱 능력 목표량(Threshold) T의 값 이상을 보장하도록 배치하는 방법을 사용하였다. 하지만, 센서 영역의 형태가 달라지거나 센서 영역 내에 중요성이 다른 지역이 있다면 위의 방법이 효율적이지 않다. 따라서 본 연구에서는 센서들의 평균적인 센싱 능력이 최대가 되도록 배치하는 접근방안과 그 필요성을 제안한다. We propose the new approach for the efficient sensor deployment in sensor networks. In the existing works, they use the approach that guarantee the sensing ability T for any point in the sensor field. However, if the shape of the sensor field is changed or it is composed of the sections that have different importance each other, the previous approach is not efficient. So, in this work, we propose the approach that maximize the average sensing ability and it’s necessity.

소멸위기 언어 보전의 관점에서 본 지역방언 교육의 방향 - 제주방언 말소리 아래아(",")를 중심으로 -

이철기 ( Cheolki Lee ) 고려대학교 한국어문교육연구소 2015 한국어문교육 Vol.18 No.-

국어는 다양한 지역방언으로 구성되어 있다. 그 중 제주방언을 유네스코는 2010년 9월에 심각한 소멸위기에 처한 언어로 분류하였다. 제주방언에는 독특한 단모음 아래아(‘·’)가 존재하는데, 이는 내륙방언에서 16-18세기에 걸쳐소멸된 ‘·’와 관련이 있다고 여겨진다. 현재 ‘·’를 발음할 수 있는 제주방언화자의 수가 급격히 감소하고 있고 이내 소멸될 위기에 처해 있다. 이 논문은 문법교육에서 지역방언을 다룰 때 제주방언 아래아(‘·’)를 활용할 수 있는 방안을 두 가지 제시하고 있다. 하나는 통시적 접근법으로 내륙방언에서 16세기부터 소멸되기 시작한 ‘·’와 관련짓는 방법이다. 다른 하나는 공시적 접근법으로 ‘·’를 포함하는 제주방언의 단모음 체계를 현대국어의 단모음체계와 관련짓는 방법이다. 제주방언의 아래아(‘·’)는 학습자가 언어의 생명력과 가변성을 인식할 수 있고, 지역방언의 가치와 언어 다양성의 이점을 인식할 수 있으며, 언어 소멸 현상에 대해 학습자의 경각심을 불러일으킬 수 있는 소재라는 점에서 교육적 가치가 있다. 제주방언 아래아(‘·’)가 문법교육에서 유의미하게 활용됨으로써 국어 학습자들이 지역방언의 가치를 깨닫고 그것의 소멸위기 상황에 경각심을 갖게 되기를 바란다. Korean language consists of various dialects. Among them, Jeju dialect was earmarked for ‘Critically Endangered Language by UNESCO in Sept. 2010. Jeju dialect has a unique monophthong named ‘Are-a’(·) which is bound up with a monophthong of the middle Korean. The number of speakers who can pronounce Are-a(·) are rapidly decreasing recently and it will become extinct in the near future. In this paper, I suggested two ways how to use the Are-a(·) of Jeju dialect in korean grammar education. One is how to relate to Are-a(·) which already had disappeared in 16th century. The other is how to relate to a single vowel system of Modern Korean Through the ways above-mentioned, I expected Korean Learners to get to know the value of regional dialect and to have caution about the endangered dialects.

Synthesis and Characterization of 1-Transition Metal Complex Substituted-2,3,4,5-Tetraphenyl-1-Silacyclopentadienyl Complexes and Generation of Transition Metal Complex-Substituted Silylene

Paek Cheolki,Ko Jaejung,Kong Youngkun,Kim, Chang Hwan,Lee Myong Euy Korean Chemical Society 1994 Bulletin of the Korean Chemical Society Vol.15 No.6

New silicon-monosubstituted (${\eta}^4$-2,3,4,5-tetraphenyl-l-silacyclopentadiene)transi tion metal complexes are described. (7-Alkyl-7-silanorbornadienyl)MLn(Alkyl=Methyl: MLn=CpRu$(CO)_2$: Alkyl=Methyl: MLn=CpNi(CO): Alkyl=Ethyl: MLn=CpNi(CO)) complexes were prepared from the corresponding silole-transition metal complexes with dimethylacetylenedicarboxylate. Cycloaddition products were obtained with 2,3-dimethyl-1,3-butadiene, 2,3-butanedione, and 1,4-benzoquinone through the ruthenium-substituted silylene. We have determined the crystal structure of (1-methyl-2,3,4,5-tetraphenyl-l-silacyclopentadien yl)cyclopentadienyldicarbonylruthenium by using graphite monochromated Mo-Ka radiation. The compound was crystallized in the monoclinic space group $P2_{1/c}$ with a = 9.838(l), b = 15.972(3), c = 18.327(3) ${\AA}$, and ${\beta}= 94.28(l)^{circ}$. The ruthenium moiety CpRu$(CO)_2$ on silicon is in an axial position.

뇌 모델링 기술 동향 - 비침습적 전기자극 연구

임철기(Cheolki Im),서현(Hyeon Seo),전성찬(Sung Chan Jun) 한국정보과학회 2020 정보과학회지 Vol.38 No.10

Synthesis and Structure of 1,2,3,4,5-Pentamethylcyclopentadienyl-1,4-Diphenyltetraazabutadiene Complexes of Rhodium and Iridium

Paek ,Cheolki,Ko, Jaejung,Kang, Sangook,Patrick J.Carrol Korean Chemical Society 1994 Bulletin of the Korean Chemical Society Vol.15 No.6

Monomeric rhodium and iridium-diaryltetrazene complexes $Cp^*$M(RNN=NNR)($Cp^*$=1,2,3,4,5-pentamethylcyclope ntadienyl; M=Rh, Ir; R=Ph, 4-tolyl) have been synthesized from [$Cp^*MCl_2]_2$(M=Rh, Ir) and 2 equiv. of $[Li(THF)_x]_2(RN_4$R) in benzene. We have determined the crystal structure of (${\eta}^5$-pentamethylcyclopentadienyl)diphenyltetrazene iridium by using graphite-monochromated Mo-$K_a$ radiation. The compound was crystallized in the monoclinic space group $P2_{1/c}$ with a=13.781(3), b=9.035(l), c=17.699(3) ${\AA}$, and ${\beta}=111.93(l)^{\circ}$. An X-ray crystal structure of complex 1 showed a short N(2)-N(3) distance ($1.265 {\AA}$) consistent with the valence tautomer A with Ir(III) rather than Ir(I). All complexes are highly colored and decompose on irradiation at 254 nm. Electrochemical studies show that complex 1 displays a quasi-reversible reduction.

영어 형용사 어순의 도상성 연구

유철기(Yoo Cheolki) 담화·인지언어학회 2004 담화와 인지 Vol.11 No.2

The main purpose of this paper is to analyze the orders of English adjectives from a cognitive perspective and demonstrate that they may be effectively explained by the Principle of Iconicity. The examples of English sentences were randomly collected from different sources for the current purpose, and the generally accepted fixed linear order of English adjectives of quality has been evaluated for its validity. After the analysis, it has been found that several variations of adjective orders are also possible. It is further argued that we need to categorize adjectives of quality into sequential sub-groups based on several aspects of iconic principles. We further note that adjective orders are not fixed, but relatively flexible, depending on the context of the situation and the speaker's perspective about the context. Furthermore, word orders may not only reflect syntactic structures but also semantic structures. We also demonstrate that the Principles of Iconicity have been found in the predicate adjectives as well as attributive adjectives.

X-ray 투과영상을 이용한 PCB 검사기법

洪哲基,崔承桓,李炅武 弘益大學校 科學技術硏究所 2002 科學技術硏究論文集 Vol.13 No.-

In this paper, we propose new techniques for enhancing and inspecting X-ray images of PCBs. Unlike conventional Laminography-based methods which inspect PCBs with layered X-ray images reconstructed by using several rotated X-ray images, our algorithms utilizes only one through x-ray image. Thus, a small and fast X-ray inspection systems can be designed and implemented with our algorithm. We also developed efficient techniques for camera calibration and image enhancement to make the inspection results to be more accurate. Our algorithms have been tested on many real images, and the results showed that the performance of it was comparable to those of Laminography-based methods.

노조몰입에 대한 지각된 노조지원과 노조수단성의 영향에 관한 실증적 연구

이철기 한국기술교육대학교 2004 論文集 Vol.10 No.2

This study sought to perceived union support to the union setting and examined relative contribution of perceived union support and union instrumentality on union commitment. Hypotheses were tested by surveying 1,500 union members of Kyungin and Kyunbuk region. Results of correlation and multiple regression analysis indicated that both perceived union support and union instrumentality affect union commitment and perceived union support accounted for more variance in union commitment than did union instrumentality. These results suggest two important implications. First. in academic perspective social exchange perspective is more effective than economic exchange perspective to explain union commitment. Second, to union setting, union officials have more concerns about perceived union support than union instrumentality to enhance the level of union commitment.