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고청정 작업환경에서 방진복 디자인이 인체 생리반응에 미치는 영향
정찬주,정재은,이윤정 한국의류학회 2002 한국의류학회지 Vol.26 No.6
The physical responses and subjective sensations of different cleanroom garments were compared in order to discover which cleanroom garment design could minimize pollution of the working environment by dust from the worker, maintain a pleasant microclimate and provide effective thermoregulation. <Garment Designs> A. Coverall with non-detachable hood, kimono sleeves (font), raglan sleeves (back), raschell net on the bodice B. Coverall with detachable hood, kimono sleeves (front), raglan sleeves (back), raschell net on the bodice C. Separate top with non-detachable hood, kimono sleeves (front), raglan sleeves (back), raschell net on the bodice D. Coverall with non-detachable hood, set-in sleeves, raschell net on the bodice E. Coverall with non-detachable hood, raglan sleeves (back), 100% cotton inner wear (upper body) The results of the experiment were as follows. Because the hood covered the shoulder and the chest areas, the chest temperature of the worker wearing garment E was quite higher than those wearing other garment designs. For fabric that has been coated in order to prevent dust, layered designs should be avoided in order to prevent skin temperature from rising. Compared with layers of underwear, it would be more effective to attach a see-through raschell net which clings to the body. Thermal sensations were also highest in garment E, reinforcing the finding that layered designs should be avoided. Through the experiment, it was found that a new material coverall with a nondetachable hood was effective in minimizing dust, suppressing skin temperature increases, maintaining a superior microclimate and providing pleasant subjective sensations.
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정찬주,강태근,Jeong, Chan-Joo,Kang, Tae-Geun 한국전자통신학회 2013 한국전자통신학회 논문지 Vol.8 No.11
In this paper, we proposed new virtualization technology that is more convenient and stable in local computing environment, then found technique elements need to desktop virtualization which is based on clients in various virtualization technologies. After running excution of process explorer utility in user level virtualization and VMWare, we found memory capacity that is used 30.1MB in VMWare and 16.6MB in user level virtualization respectively to compare private bytes each of process. We found no significant difference of CPU utilization which is executed application program in local computing environment and user domain with user level virtualization. In this result, proposed virtualization technology is able to minimize performance degradation of local computing environment. 본 논문은 가상화 기술에서 클라이언트 기반의 데스크톱 가상화에 필요한 기술 요소를 찾아내고 로컬 컴퓨팅 환경에서 보다 편리하고 안정된 클라이언트 가상화 기술을 제안하였다. 유저 레벨 가상화와 VMWare를 로딩하여 처리 익스플로우 유틸리티를 실행시킨 후 각 프로세스의 Private 바이트를 비교해보면 VMWare에서는 30.1MB의 메모리 용량이 사용되었고, 유저 레벨 가상화 프로세스에서는 16.6MB의 메모리 용량이 사용되어짐을 알 수 있었다.클라이언트 가상화를 이용한 가상화 사용자 영역과 로컬 컴퓨팅 환경에서 응용 프로그램을 실행시킨 후 CPU 사용율을 비교한 결과 큰 차이가 없음을 알 수 있었다. 이러한 결과는 가상화된 사용자 영역에서 로컬 컴퓨팅 환경의 성능 저하를 최소화 하여 사용자가 필요한 기능을 효율적으로 사용할 수 있음을 알 수 있었다.
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무선 PKI에서 WIM, USIM 등의 스마트카드를 사용하지 않는 인증서 및 키 로밍
정찬주,이용,이재일 에스케이텔레콤 (주) 2003 Telecommunications Review Vol.13 No.3
최근 국내 무선 단말기 사용자의 수가 3천만 명을 넘어서고 있는 상황이고, 무선 데이터 통신의 증가는 보안이라는요소를 필요로 하게 되었다. 이러한 보안을 해결하는 방법으로 무선 PKI를 적용할 수 있다. 인증서는 공개키의 소유자를 나타내는 사용자 인증 정보이고, 비밀키는 인증서의 소유자만 전자서명을 생성할 수 있는 도구이다. WAP 및GSM 등에서는 사용자가 단말기를 변경하는 경우에 사용자의 비밀키 및 인증서를 재사용하는 방법은 WIM, USIM 등의 스마트 카드를 사용하는 것으로 정의하고 있다. 본 논문에서는 WIM, USIM 등의 스마트카드를 사용하지 않고도 인증서와 비밀키를 재사용할 수 있는 무선 사용자 인증서 및 키 로밍 프로토콜을 제안한다. 제안하는 프로토콜을사용하는 사용자는 기존의 무선 PKI 모듈을 탑재한 단말기로 무선 사용자 인증서 및 키 로밍 서비스를 제공 받을 수있다. 이는 사용자의 경제적 부담이 줄어들어 무선 PKI가 활성화되는데 기여할 것이다.
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정찬주,정재은,이윤정 한국의류학회 2002 한국의류학회지 Vol.26 No.2
Based upon literature survey and questionnaire survey, this research tries to develop four new Cleanroom Garment in semiconductor industrial environment. The designs emphasize to minimize workers discomfort so that they can not only cover human body fully but also reduce dust as much as possible during work hour in dean room. The new designs characteristics and results from both function test and dust emission test are as follows: 1. In order to reduce dust-emission, we develop new designs with hood, kimono sleeve, and back zipper. The designs with hood face positive test results in term of motion suitability and dust-emission. The design with seam in front, in particular, is effective to control dust-emission. 2. For the purpose of reducing dust-emission, we also emphasize to minimize ease of dust-proof wear, with reference to previous research and clothing experiment. The experiment participants report that the new wears are not so comfortable as existing ones, but they accept the new wears positive as effective in reducing dust-emission owing to reduced ease of Cleanroom Garment and sleeves. 3. Also to reduce dust-emission in inner wear, we put inner wear in both Cleanroom Garments and inner wear, resulting to remove discomfort of wearers when changing clothes and of tight waist due to inner-trousers. 4. We develop new designs with elastic bands in both waist through the side lines and with velcro only at the back side. To remove twist in front contributes to reduce emission arising out of friction, also to free the appearance minding woman workers from worrying about exposed stomach. The new designs need to be accepted as a valuable alternative of Cleanroom Garment, in that they are highly effective to reduce dust-emission, which is the most important factor in the wear, in spite of some drawbacks in terms of motion-suitability, ease and appearance as shown in wearing test.
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보건계열과 비보건계열 학과 대학생의 전공만족도, 진 로성숙도, 취업 스트레스 및 취업 준비 추이 연구 : C 대학교 대학생을 중심으로
정찬주,양회송,유영대,강효정,김민규 한국지역사회건강관리협회 대한건강과학학회 2023 대한건강과학학회지 Vol.20 No.1
Background : The purpose of this study is to analyze the difference the im pact of their affiliated characteristics and the general characteristics on depa rtment satisfaction, career maturity, and career stress of C-college students. Methods : The study was conducted from June, 2022 of 279 students in C -college health department and non-health department in Suncheon City. Results : There was a significant difference in career maturity and career stress to gender of the students. But the`re was no significant difference in department satisfaction. There was no significant difference according to grade level. There was a significant difference in department satisfaction, career maturity and career stress according to health and non-health department. Conclusion : Before and after the career decision period, it is necessary to operate a counseling for career interest, effective career guidance, and stres s control. Various supports are needed, such as providing major-related subject programs and certificate acquisition programs.
ScienceON
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