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무용학 : 규칙적인 무용활동 참여가 여자 청소년의 무드상태와 자아존중감에 미치는 영향
신병철(ByoungChulShin),정삼현(SamHyeonJeong) 한국체육학회 2005 한국체육학회지 Vol.44 No.6
The purpose of this study is to determine effects of regular participation in dance activities on young girls mood state and self-esteem.For the purpose, this researcher surveyed total 435 middle and high school girls(217 participants and 218 non-participants) to know whether they participated in dance activities regularly differences in mood state and self-esteem among them in accordance with their school level. As a result, the researcher could get significant results as follows. First, young girls participation in dance activities is effective in reducing their negative mood states such as depression, anger, anxiety and confusion. Second, young girls participation in dance activities promotes their positive self-esteem and reduces their negative self-esteemThird, young girls self-esteem are correlated with their mood state. Whether such correlation is static or non-static depends on whether those girls participate in dance activities or not. In conclusion, regular participation in dance activities reduces young girls negative mood and promotes their positive self-esteem. However, it is still needed to make further analyses to know why such participation promotes self-esteem, what type of dance is more effective, what physical strength of dance is most effective and what relations exist between self-esteem and mood state. These should be further dealt with through subsequent studies.
신병철 ( Byung-cheol Shin ),변재현 ( Jai-hyun Byun ),윤태홍 ( Tae Hong Yun ) 한국품질경영학회 2021 품질경영학회지 Vol.49 No.1
Purpose: A noncentral composite design method is to be developed to explore farther region for the first factorial design. A general guideline for sequential experimentation is provided. Methods: (1) A non-overlapping noncentral composite design (NNCD) is developed, in which the second factorial design shares one design point that indicates the best response value in the first factorial design. (2) Four composite designs are compared in terms of the four design evaluation criteria, which are D-, A, G, and I-optimality. (3) A follow-up design strategy is suggested based on the interaction effect, direction of improvement, number of factors. Results: (1) NNCD and model building method are presented, which is useful for exploring farther region from first factorial design block. (2) The performances of the four composite designs are compared. (3) A follow-up design strategy is suggested. Conclusion: (1) NNCD will be useful to explore farther region for the first factorial design. (2) A follow-up design strategy can be beneficial to the experimental practitioners for product and process design and improvement.
Bispectral Index 감시장치로 경막외마취의 진정효과를 평가할 수 있는가?
신병철,이혜원,신혜원,조헌,임혜자,윤석민,장성호 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.43 No.6
Background: Epidural anesthesia has been shown to a have direct sedative effect and to markedly reduce the amount of hypnotic agents required for sedation. A Bispectral Index (BIS) is a useful of the level of sedation and loss of consciousness for several anesthetics including propofol. In this study, we investigated whether BIS monitoring could detect the sedative effect of epidural anesthesia during propofol induction. Methods: Twenty patients scheduled for elective lower abdominal surgery were included. A Target controlled infusion (target effect concentration 5㎍/ml, induction time 3 min) of propofol was administered to the patients with or without epidural anesthesia (2% lidocaine 15 ml) at the L_2-3 level. The OAA/S scale and BIS were evaluated 20 min after epidural injection. Hypnotic requirements of propofol were determined using loss of eye opening in response to verbal command as an epidural. At the time of induction of hypnosis, the target concentration, target effect concentration and BIS were recorded. Results: Epidural lidocaine significantly decreased the hypnotic dose of propofol (1.0±0.2㎍/ml vs. 1.3±0.1㎍/ml; p=0.0008), hypnotic calculated concentration (3.3±0.6㎍/ml vs. 4.1±0.3㎍/ml; P=0.0007), and the hypnotic effect concentration (0.7±0.3㎍/ml vs. 1.1±0.1㎍/ml; P=0.0007). In the patients with epidural anesthesia, the OAA/S scale was decreased without a change of the BIS after epidural anesthesia and BIS recorded at the time of induction of hypnosis was much higher in patients with epidural anesthesia than in patients without in epidural anesthesia (92.7±2.2㎍/ml vs. 85.5±6.2㎍/ml; P=0.0029). Conclusions: Epidural anesthesia included a sedative effect without a change of the BIS and then induced the hypnosis with lesser dose of propofol. At the time of hypnosis, a higher BIS was noticed with epidural anesthesia. These results concluded that BIS monitoring could not detect the sedative effect induced with epidural anesthesia. (Korean J Anesthesiol 2002; 43: 698~703)
신병철,김상돈,고영범 한국화학공학회 1984 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.22 No.5
순환유동층(7.8㎝-내경 × 250㎝-높이)내의 석탄-공기 계의 흐름특성을 실온에서 측정하였고, 석탄연소시의 연소효율과 유동층 높이에 따른 온도분포를 결정하였다. 발열량이 4.870㎉/㎏인 국내 무연탄은ㄹ 사용하여 흐름특성은 석탄의 평균입자경을 0.205, 0.395 및 0.71㎜로 바꾸어서 측정하였으며 석탄연소실험은 0.71㎜입자를 사용하였다. 기포층과 난류층 흐름의 경제속도(transition velocity) 및 난류유동층과 고속유동층의 경계속도인 수송속도(transport velocity)를 결정하였다. 난류유동층흐름에서의 석탄연소효율은 기포층흐름때 보다 높게 나타나며 낮은 온도에서도 쉽게 정상상태를 유지할 수 있었다. 석탄연소효율은 과잉공기양이 증가함에 따라 기포유동층 및 난류유동층에서 다같이 증가하며 난류유동층에서의 유동층높이에 따른 온도분포는 기포층유동층보다 더 균일하게 측정되었다. In a circulating fluidized bed (7.8 ㎝-ID × 250 ㎝-high), flow regimes of coal-air system at room temperature and coal combustion efficiency and temperature profiles along the bed height have been determined. An anthracite domestic coal having heating value of 4,870 ㎉/ ㎏ was employed. Coal particle sizes were varied 0.205, 0.395 and 0.71 ㎜ for flow regime and 0.71 ㎜ for coal combustion studies. The transition velocity between bubbling and turbulent beds and the transport velocity between turbulent and fast beds have been determined. In a circulating fluidized bed, combustion efficiency was higher in the turbulent bed than that in the bubbling bed. Steady combustion operation can be easily maintained at much lower temperature in the turbulent bed than in the bubbling bed.
신병철(B.C.Shin),김동인(D.I.Kim),이재기(J.K.Lee),김창수(C.S.Kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
To reduce particulate matter(PM) effectively from diesel emissions, high pressure injection technique has been introduced. Electronic unit injector(EUI) differs from conventional fuel injection system, in that EUI assembles plunger, nozzle, and housing together and forms like a unit type. As getting rid of fuel pipe, dead volume can be decreased. So EUI generates high pressure over 1500bar. and make rapid spill possible at the same time. EUI employs solenoid valve, which can electronically control injection timing and fuel injection quentity. it doesn't need governor and timer anymore.<br/>
신병철,Sin, Byeong-Cheol 한국화재보험협회 2007 防災와 保險 Vol.118 No.-
다중이용업소는 화재위험도가 높음에도 불구하고, 화재안전은 항상 뒷전으로 밀려나 있다. 본 고에서는 이러한 관점에서 다중이용업소의 현황과 화재 위험성 및 방재 측면의 개선방향 등에 대하여 간략히 기술하고자 한다.