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단조작업시 정신피로도 측정을 위한 한국어판 질문지에 관한 연구
이창미 ( Chang Mi Yi ),고한우 ( Han Woo Ko ),윤용현 ( Yong Hyeon Yun ) 한국감성과학회 2000 춘계학술대회 Vol.2000 No.-
단조작업에 의한 정신피로도 측정을 위한 task 설계 및 한국어판 질문지 작성을 위하여 일본 PSS(Pasic Stress Scale), RAS(Rouken Arousal Scale)의 비교·고찰을 통한 한국어판 질문지를 작성하였으며 단조작업에 적합한 연산 Task를 개발하여 실험을 실시, 한국어판 질문지를 통해 타당성을 검증하였다. 항목은 7인자 14항목의 情動과 정신피로, 신체피로로써 단조작업을 수행함에 따라 Task 3회 구간부터 긴장, 편안함, 전반적 활성에 관련된 항목은 감소경향을 나타내었으며, 의욕감퇴, 집중곤란, 각성저하, 권태에 관련된 항목은 증가경향을 나타내어 이원화 경향을 보였다.
권오경,이창미,김묘향,박희웅,Kwon, Oh-Kyung,Yi, Chang-Mi,Kim, Myo-Hyang,Park, Hee-Ung 한국의류산업학회 1999 한국의류산업학회지 Vol.1 No.3
This study was conducted to examine the fatigue phenomenon of mechanical properties in tencel fabrics by repeated washing & shear and tensile deformation. The obtained results are as follows. After performing repeated shear tensile deformation, RT of tencel showed higher increase rate than that of cotton and rayon, whereas its WT and EM was a smaller decrease rate than that of them. This means that tencel's resistance to tensile deformation was the greatest. In the repeated washing and shear tensile deformation, tencel's 2HB, 2HG and 2HG5 showed a remarkable increase rate. In terms of deformation frequency, the greatest change rate appeared at the time of 1000 cycles of repeated shear tensile deformation and 15 times of repeated washing. In the hand value and THV, KOSHI showed a higher increase rate for tencel than for cotton and rayon in both repeated washing and shear tensile deformation, and NUMERI showed a higher increase rate. In the THV the change rate of rayon and cotton could be rarely seen but for tencel, it decreased. tencel's change rate of thermal insulation value by materials was 1.08%, and it increased as the washing frequency increased, compared to the grey fabrics, whereas the change rates of cotton and rayon were 0.74% and 0.22%, respectively. The qmax decreased in the order of cotton>tencel>rayon as the washing frequency increased.
방진복 착용에 따른 인체의 온열생리적 특성 및 주관적 감각
권오경 ( Oh Kyung Kwon ),이창미 ( Chang Mi Yi ) 한국감성과학회 1998 춘계학술대회 Vol.1998 No.-
Dust-free garment prevents contamination which otherwise is caused by skin and clothes to protect from dust or dirt. Therefore, it requires high performance and should function as a working clothes. Clothes are a medium between human and thermal environmental system, and it is required to study human enviroment to ensure comfortableness of clothes and to satisfactorily go along with enviroment .This study investigates the physical and physiological features of dust-free garment used in the clean room at a semiconductor factory in oredr to scientifically clarify what the dust-free garmint is as well as to contribute to the design and development of high performance material and clothes. Three kinds of dust-free fabrics (DFG-I, DFG-II, DFG-III) which are being developed by a local company are used to manufacture dust-free garment. These dust-free garments are dressed and tested in such an enviroment as similar to semiconmemts with temperature at 23±1°C and humidity at 50±5%RH in order to investigate the thermo physiological and psychological features of human body. The results of this study are as follows. The results of this study are as follows. 1.The mean skin temperature was significantly different among the clothes, subjects and experimental time. Temperature tends to rise from the time of exercising load. Continuous motion coupled sealed clothes prevents heat transmittance, and temperature rises in the order of DFG-l, DFG-ll and DFG-lll as time course. 2.As for the skin temperature by local timperature is minimun on the head and torso and increares remarkably at the terminal part of human body. 3. As for the body mass loss was significantly higher in DFG-lll than DFG-l and DFG-ll. 4. Though there is no significant difference in the temperature within clothes among the kind of clothes temperature is 1°C higher in the back. Temperature within all the dust-free garments 29.7°C in the back and 31.3°C in the chest which belong to the comfort zone(31-33°C). The relative humidity is 39.7%RH in the chest and 33.8%RH in the back which is slightly below the comfort zone(40-60%RH) 5. The thermal sensation belong to the comfort zone regardless of the kinds of clothes. The subjects feels a slight fatigue as times goes. As for the subjective sense of subjects the mean skin temperature as well as temperature and humidity within clothes show similar tendency. This means that they relate with each other.
음악 리듬의 비트 간격 변화가 심박변동 및 쾌적감에 미치는 영향
정재선 ( Jae Sun Jung ),이창미 ( Chang Mi Yi ),고한우 ( Han Woo Ko ),김종원 ( Jeong Won Kim ) 한국감성과학회 1999 추계학술대회 Vol.1999 No.-
본 논문은 음악 리듬의 비트간의 간격의 변화가 사람의 심박동 및 쾌적감에 미치는 영향을 평가하기 위하여 음악 리듬의 박자를 규칙적인 다섯 단계의 변화를 적용하여 평가했다. 평가 항목으로는 (1) LF성분에 많은 영향을 보이는 심박동의 전력스펙트럼 분석과 (2) S.D.법으로 심리적 평가항목을 수행하였다. 실험 결과는, 박자의 변동이 일정한 정박자 리듬에서는 생체에 특이한 변화가 나타나지 않았지만 박자의 변동이 변화하는 리듬에서는 LF성분이 증가함으로 긴장과 불안이 유발됨을 알 수 있었다. 추가적으로 심박변동의 스펙트럼 분석를 통하여 얻을 수 있는 LF와 HF 성분사이의 비를 조사함으로 심리학적 불안을 평가하는 가능성을 제안한다.
Cap의 생산(生産) 실태(實態)에 관(關)한 분석(分析) (1)
정혜락 ( Hye Rak Jeong ),이창미 ( Chang Mi Yi ) 한국패션비즈니스학회 1999 패션 비즈니스 Vol.3 No.4
The study attempted to identify the present conditions and problems of existing cap makers and to find a way to resolve the problems by examining the actual state of their production activities, in order to present basic data for designing more comfortable caps. After a preliminary examination was carried out with college women in Taegu and Kyongbuk areas, seven cap makers who have launched their own individual brands were chosen, and a questionnaire was performed with them. The collected data was analysed, using the SAS program. The results showed that the sales of the makers increased each year but they had a little defect rates resulting from poor raw and sub-materials and were inactive in developing a material or design. It was analysed, therefore, that to produce high quality caps, it is urgently required to develop a new material and design.
기초 : 자살유전자를 이입한 사람 신경줄기세포를 이용한 악성 신경교종의 유전자 치료
안영민 ( Young Min Ahn ),조경기 ( Kyung Gi Cho ),이창미 ( Chang Mi Lee ),방종희 ( Joung Hee Bang ),류명이 ( Myung Yi Ryu ),김세중 ( Se Joong Kim ),서혜영 ( Hae Young Suh ),김승업 ( Seung Eop Kim ) 대한뇌종양학회 2006 대한뇌종양학회지 Vol.5 No.2
Introduction : Despite the advanced neurosurgical techniques and various multimodal therapeutic approach have been developed for malignant gliomas, these can not save the patients from the tumors due to infiltrating behavior of glioma cells. Here the authors investigated the possibility of treatment for the malignant gliomas with neural stem cell(HB1.F3) transduced with suicidal gene using the tropism of stem cells. Materials and Methods : E.coli cytosine deaminase(CD) is an enzyme that catalyzes the conversion of noncytotoxic 5- FC to the cytotoxic and radiosensitizing drug 5-FU. Cytotoxic 5-FU and its toxic metabolites can readily diffuse into surrounding tumor cells giving CD. HB1.F3 were transduced with retroviral vectors expressing the E.coli CD. Rats were implanted with U373MG, U251MG human glioblastoma(hGM) cell line and F3/CD were injected directly into the tumor mass 6 days later. The rats with tumors were injected IP 5-FC or saline daily for 7 days since 6 days after implantation of tumors. Results : HB1.F3 which were injected into the contralateral hemisphere to the tumor implantation site migrated through the corpus callosum to the tumor cells 3 days after hGM transplantation . The growth inhibition of 5-FU treated cells in comparison to untreated controls was remarkable in vitro. The tumor mass in the rats with transplantation of F3/CD were reduced markedly in size comparing to that with F3 after injection of 5-FC . Conclusions : The human neural stem cells can trace to the glioma cells in the rat brain. 5-FC systemic treatment with direct transplantation of F3/CD reduces tumor size. Our data indicates that suicide gene therapy using neural stem cells would be promising as a new therapeutic approach for malignant glioma.
심박변화율과 뇌파를 이용한 단기기억 작업시 집중도의 평가
윤용현 ( Yong Hyeon Yun ),고한우 ( Han Woo Ko ),김동윤 ( Dong Youn Kim ),이창미 ( Chang Mi Yi ) 한국감성과학회 2000 춘계학술대회 Vol.2000 No.-
단기기억 작업시 집중도를 평가하기 위하여 평가용 task를 설계하고 5단계의 난이도에 대하여 실험을 실시하였다. 난이도에 따른 집중도의 변화를 측정하기 위하여 주관평가를 실시하고 행동지표와 생리신호를 측정하였다. 측정된 생리신호 중 전두엽(Ep1, Ep2)에서 측정한 뇌전도 신호의 α-band와 β-band의 전력의 비와, 심박변화율의 전력 스펙트럼의 MF/(LF+MF+HF)비를 구하였다. 실험 결과 집중도 높게 보고된 단계에서 task를 수행함에 따라 뇌전도 신호의 α/β 비와 심박변화율의 MF/(LF+MF+HF) 비도 점차로 증가하였다.