부직포의 열적 성질과 보온성에 관한 책구 (III) -풍속과 두께 변화에 대하여-

이경우,박명수,신현세,주강,Lee, Kyung-Woo,Park, Myung-Soo,Shin, Hyun-Sae,Joo, Kang 한국섬유공학회 1990 한국섬유공학회지 Vol.27 No.12

The change of warmth retaining properties of non-woven fabric with thickness and air velocity has been studied. The transmission of air velocity was approached to inverse proportion at above thickness 30 mm in air velocity 1.5 m/sec but in the above air velocity that was disregarded. The effect of air velocity could be indicated to time of reach thermal equilibrium and transmission of air velocity. In the thermal equilibrium state, transition area which has less influence on the air velocity was detected in sample thickness 30 mm to 50 mm.

삼차신경 운동핵에서 교근 근방추 구심성 신경섬유 종말지의 미세구조

이경우,배용철,김진수,Lee, Kyung-Woo,Bae, Yong-Chul,Kim, Chin-Soo 대한악안면성형재건외과학회 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.3

교근의 근방추에서 유래하여 단일 연접성 고유수용성 악반사에 관여하는 구심성 신경섬유를 단일 축삭내 HRP 주입기법으로 염색해서 삼차신경 운동핵에서의 type I a 및 type II 신경 섬유 종말부의 미세 구조 및 연접양상을 분석한 결과는 다음과 같았다. ${\cdot}$ 대부분의 표식 종말지는 dome, 길쭉한 형태 혹은 둥근 모양을 나타내었으며, scalloped 형태 혹은 glomerulus 형태는 관찰되지 않았다. ${\cdot}$ 표식 종말지는 다수의 균일한 형태 및 크기(49-52nm) 의 투명한 구형의 소포와 때때로 소수의 치밀소포(직경:87-114nm)를 함유하고 있었다. ${\cdot}$ 표식 종말지의 크기는 type I a가 장경($1.91{\pm}0.63{\mu}m$), 단경($0.94{\pm}0.28{\mu}m$) 및 평균 직경($1.42{\pm}0.40{\mu}m$)에서 type II보다 작았다(p<0.05). ${\cdot}$ 표식 종말지는 신경원체 혹은 가지돌기와 비대칭 연접을 이루었으며, 다형소포와 같은 연접소포들을 함유하는 종말부와의 연접은 관찰되지 않았다. ${\cdot}$ 대부분의 type I a (94.9%) 및 type II(85.9%) 종말지는 단지 1개의 neuronal propile과 연접을 이루었으며, 4개 이상의 neuronal propile들과 연접을 이루는 경우는 관찰되지 않았다. ${\cdot}$ type I a 종말지에 있어서 대부분(87.2%)은 신경원체 및 근심부 가지돌기와 연접을 이루는데 반해 type II 종말지는 다수가(64.8%) 원심부 가지돌기와 연접을 이루었으며 신경원체 및 근심부 가지돌기와 연접을 이루는 경우는 35.2%에 그쳤다. 이상을 종합해 보면 단일 연접성 악반사를 일으키는 구심성 신경섬유 종말부는 삼차운동신경핵에서, 동통 및 촉각 또는 감각분별등 복잡한 감각을 처리하는 감각핵에서 보다 연접후신경원에 강력한 흥분성 신호를 전달하며 또한 대단히 단순한 연접양상을 이루는 것으로 나타났다. Muscle spindle afferents from masseter muscle were labelled by the intra-axonal HRP injection and were processed for light microscopic reconstruction. Regions containing terminal arbors scattered in the central portion of the masseteric motor neuron pool (type I a) and those restricted to 2-3 small portion of it (type II) were selected and processed for electronmicroscopic analysis with serial sections. The shape of the labelled boutons was dome or elongated shape. Scalloped or glomerulus shape with peripherial indentation containing pre or postsynaptic neuronal propiles, which is occasionally found in the trigeminal main sensory nucleus and spinal dorsal horn, was not observed. Both type Ia and type II boutons had pale axoplasm and contained clear, spherical vesicles of uniform size(dia : 49-52nm) and occasionally large dense cored vesicles(dia : 87-118nm). The synaptic vesicles were evenly distributed throughout the boutons although there was a slight tendency of vesicles to accumulate at the presynaptic site. The average of short and long diameter(short D. + long D./2) of type I a bouton was smaller than that of type II bouton. All the labelled boutons, which showed prominent postsynaptic density, large synaptic area and multiple synaptic contact, made asymmetrical synaptic contact with postsynaptic neuronal propiles. Most of the type Ia and type II boutons made synaptic contact with only one neuronal propile and boutons which shows synaptic contact or more neuronal propiles was not observed. Most of the type Ia boutons(87.2%) were presynaptic to the soma or proximal dendrite and a few remainder(12.8%) made synaptic contact with dendritic shaft or distal dendrite. In contrast, majority of type II boutons showed synaptic contact with dendritic shaft and remainder with soma or proximal dendrite. In conclusion, terminal boutons which participate in the excitatory monosynaptic jaw jerk reflex made synaptic contact with more proximal region of the neuron, and showed very simple synaptic connection, compared with those from the primary afferenst in the other region of the central nervous system such as spinal dorsal horn and trigeminal main sensory nucleus which assumed to be responsible for the mediating pain, tactile sensation, sensory processing or sensory discrimination.

점탄성 물질로 만들어진 보의 대변형 해석

이경우,Lee, Kyung-Woo 한국섬유공학회 2005 한국섬유공학회지 Vol.42 No.5

The governing equation for a large deflection of linear viscoelastic beam is derived. Because of the complexity involved in the governing equation that is a nonlinear integro-differential equation, solutions were obtained by numerical approximations for the case of the cantilever beam under a concentrated load and a combined load.

계장화 압입시험

이경우(Kyung-Woo Lee),최민재(Min-Jae Choi),김주영(Ju-Young Kim),김광호(Kwang-ho Kim),권동일(Dongil Kwon) 한국비파괴검사학회 2006 한국비파괴검사학회지 Vol.26 No.5

냉각자켓의 유량에 따른 냉각특성 연구

이경우(Kyung-woo Lee),김수태(Soo-tae Kim),최대봉(Dae-bong Choi),김용길(Yong-gil Kim) 한국정밀공학회 1999 한국정밀공학회 학술발표대회 논문집 Vol.1999 No.5월

장애우와 노인미술교육 체험분석 연구

이경우 ( Kyung Woo Lee ) 한국사상문화학회 2016 韓國思想과 文化 Vol.83 No.-

본 연구는 최근 평생교육*1)맥락에서 확장되고 있는 문화예술교육의한 사례로서 미술 평생교육 현장의 다양한 접점에서 연구자 본인의 교육경험을 중심으로 계층별로 본 체험 분석과 대안을 제시하는 것이다.즉 장애우의 미술교육 체험 분석과 노년기 노인 미술교육의 체험을 토대로 현장에서의 교육사례를 통한 결과 분석과 함께 앞으로의 장애우·노인 미술교육에 있어 활성화 방안을 찾아보는 것이다.이와 관련하여 본 연구는 크게 네 부분으로 나누어진다. 첫째, 장애우의 미술교육 체험 분석에서 청각 장애우의 미술교육 사례 및 치료효과와 활성화 방안을 알아보고, 둘째, 자폐성 장애우의 미술교육 사례 및 치료효과와 활성화 방안을 제시한다. 셋째, 노인 미술교육 체험 분석에서 개인지도에 의한 노년기 교육사례 및 활성화 방안을 알아보고, 넷째,조직· 단체에 의한 노년기 교육사례 및 활성화 방안은 무엇이며, 이를 통해 우리나라의 평생교육현장에서의 장애우와 노년기 미술교육의 문제점은 무엇인지를 인지하면서 그들(장애우 및 노년기 교육 수혜자 층)의 삶의 질 향상과 사회참여로써 자아실현 욕구에 맞춘 문화예술 평생교육에서의 미술교육 활성화 방안을 제안하는 것이다 As a case of culture & art education recently expanding in the context of lifelong education, this study aims to suggest the experience analysis and alternatives for each class, focusing on the researcher``s educational experience in diverse contact points of sites for art lifelong education. In other words, based on the experience analysis on art education for people with disabilities and senior citizens, it aims to seek for the vitalization measures of art education for people with disabilities and senior citizens through the results of educational cases in sites. Thus, this study is largely divided into four parts. First, in the experience analysis on art education for people with disabilities, the cases, treatment effects, and vitalization measures of art education for people with hearing impairment are examined. Second, the cases, treatment effects, and vitalization measures of art education for people with autism are suggested. Third, in the experience analysis on art education for senior citizens, the educational cases of senior citizens by private instruction and its vitalization measures were examined. Fourth, the educational cases of senior citizens by organization/group and its vitalization measures are understood. Cognizing problems with art education for people with disabilities and senior citizens in lifelong education sites of Korea, it aims to suggest the vitalization measures of art education as culture & art lifelong education suitable for desires for self-realization by improving the quality of their(recipients of education for people with disabilities and senior citizens) lives and participating in society.

자율주행차량 샤시 시스템 열화 진단 및 수명 예측

이경우(Kyung-Woo Lee),성대운(Dae-Un Sung),유영민(Yeongmin Yoo),이종수(Jongsoo Lee) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.6

1-3형 압전 복합체를 이용한 광대역 수중 통신용 음향 트랜스듀서에 관한 연구

이경우(KYUNG-WOO LEE),소형종(HYOUNG-JONG SO),임실묵(SIL-MOOK LIM),김원호(WON-HO KIM),조운현(UN-HYUN CHO) 한국해양공학회 2008 韓國海洋工學會誌 Vol.22 No.2

Recently, many researches in relation to data transmission with faster speed and greater volume, many researches have been carried out on sonnr systems for underwater communimtion. According to these researches, an acoustic transducer for underwater communication requires wide bandwidth properties. In domestic researches for underwater communimtion sonar, an operating frequency in the range of 20-40 ㎑ is used. In this paper, we propose anon-resonance type acoustic transducer for underwater communimtion. The TVR (transmitting voltage response) characteristics increased linearly as the frequency increased, and the RVS (receiving voltage sensitivity) characteristics were constant as the frequency increased. Traditional techniques for wide bandwidth transducershave a limit and a transmission loss difference at lower and higher frequency operating ranges. In this paper, the new transducer proposed decreased the transmission loss under some conditions. It was optimized with the FE analysis tool (ATILA) and evaluated using the TVR and the RVS characteristics in the range of 10-90 ㎑. The value of TVR was 138 ㏈ at 20 ㎑ and 148 ㏈ at 40 ㎑, and the differences was 12 ㏈. The value of RVS was 195±2 ㏈ and nearly constant. From theseresults, it is certain that the developed transducers mn be used for an underwater communimtion network in the 1.3 ㎞ range with both a 20 ㎑ bandwidth and 30 ㎑ center frequency.

현대국어 경어법의 사회언어학적 연구 (2)

이경우(Kyung Woo Lee) 한국어교육학회 2001 국어교육 Vol.- No.106

아이스하키 참여 동호인의 재미요인이 운동몰입 및 생활만족에 미치는 영향

이경우 ( Kyung Woo Lee ),오경록 ( Kyung Rok Oh ) 한국스포츠코칭학회 2017 한국스포츠코칭학회지 Vol.2 No.2

이 연구는 아이스하키 참여 동호인인의 재미요인이 운동몰입과 생활만족에 미치는 영향을 규명하기 위하여 수행되었다. 이를 위하여 서울, 경기지역에서 활동 중인 아이스하키 참여 남자동호인 306명이 표집되었다. 수집된 자료는 SPSS Version 18.0을 활용하여 빈도분석, 신뢰성 분석, 요인분석, t-검정, 일원변량분산분석, 상관관계분석, 다중회귀분석을 실시하였다. 연구결과는 다음과 같다. 첫째, 인구통계학적 특성에 따른 재미요인, 운동몰입, 생활만족의 차이에서는 연령, 학력, 직업, 참여횟수에 유의한 차이가 나타났다. 둘째, 재미요인, 운동몰입, 생활만족간의 상관관계는 통계적으로 유의한 상관이 있는 것으로 나타났고, 독립변인과 각 하위요인 간의 상관관계에서도 대부분 유의하게 나타났다. 셋째, 재미요인의 유능성과 성취성 모든 요인이 운동몰입의 인지적 몰입, 행위적 몰입에 유의한 영향을 미치는 것으로 나타났다. 넷째, 재미요인의 성취성이 생활만족에 부분적으로 유의한 영향을 미치는 것으로 나타났다. 다섯째, 재미요인의 인지적 몰입이 생활만족에 부분적으로 유의한 영향을 미치는 것으로 나타났다. This study investigates the effect of the fun factor of members of an ice hockey club on their engagement during exercise and overall satisfaction in life. Data was collected from 306 club members in Seoul and Kyunggi-do, who consented to participating in the research. The analysis was carried out using the SPSS Version 18.0 program, also including frequency analysis, validity and reliablity tests, t-test, one-way ANOVA, correlation analysis and multiple regression analysis. The results are as follows: Firstly, there was a significant difference in the participants' level of engagement during exercise and satisfaction in life according to demographical characteristics: age, level of education, vocation and the number of times participated in exercise. Secondly, the effect on engagement during exercise showed the competence and achievement in the fun factor caused a significant effect on cognitive engagement and cognitive flow. Thirdly, results showed the achievement level of the fun factor played a partly significant role on satisfaction in life. Fourthly, the cognitive engagement also partly played a role in satisfaction in life. Likewise, ice hockey participants' fun factor positively affected their enegagement in exercise and overall satisfaction in life. The fun factors facilitated the participants to concentrate more, allowing to relieve stress and to feel more satisfied in life.